├── 05UnixunitStdIo ├── 01MyEffectIo ├── 01MyEffectIo.c ├── 02MyeffectioRdWr ├── 02MyeffectioRdWr.c ├── 03MyIoStdio ├── 03MyIoStdio.c ├── 04Mytempfile ├── 04Mytempfile.c ├── 05Mymsktemp ├── 05Mymsktemp.c ├── 065-14Memorystream ├── 065-14Memorystream.c ├── std.err └── std.out ├── 06UnixunitsystemdateInfo ├── 016-2Mygetpwnam.c ├── 02Mygettime ├── 02Mygettime.c ├── 03Myuname ├── 03Myuname.c ├── 06.2Myshadow └── 06.2Myshadow.c ├── 07UnixunitForkEnv ├── 01Myhelloworld ├── 01Myhelloworld.c ├── 02Myexit ├── 02Myexit.c ├── 03Myecho ├── 03Myecho.c ├── 047-10Myjmp ├── 047-10Myjmp.c ├── 057-11externMyjmp ├── 057-11externMyjmp.c ├── 067-13Mytestjmp ├── 067-13Mytestjmp.c └── a.out ├── 08ForkContral ├── 01.out ├── 018-1MyforkGetid ├── 018-1MyforkGetid.c ├── 028-3Myvfork ├── 028-3Myvfork.c ├── 03-8_6Mypr_exitstatus ├── 03-8_6Mypr_exitstatus.c ├── 04-8_8MysolveZombieFork ├── 04-8_8MysolveZombieFork.c ├── 05-8-12MyIpc ├── 05-8-12MyIpc.c ├── 06-8_13MyextendIPC ├── 06-8_13MyextendIPC.c ├── 08-8_16Myexec ├── 08-8_16Myexec.c ├── 09-8-17Myechoall ├── 09-8-17Myechoall.c ├── 11-8_22MySystem.c ├── 12-8_23MytestSystem ├── 12-8_23MytestSystem.c ├── 13-8-24MycommandSystem ├── 13-8-24MycommandSystem.c ├── 14-08_28MyProcessAccount ├── 14-08_28MyProcessAccount.c ├── 15-08_29MyTestProcessAccount ├── 15-08_29MyTestProcessAccount.c ├── 16-08_30Mynice ├── 16-08_30Mynice.c ├── 17-08_31MyTmsShell ├── 17-08_31MyTmsShell.c ├── 18-MyZombieofork └── 18-MyZombieofork.c ├── 09Forkresulation ├── 01-09_12MyOrphanProcess ├── 01-09_12MyOrphanProcess.c ├── 9.1practice.md ├── a.out ├── main.c ├── makefile └── temp.foo ├── 10Signal ├── 01MyexternSignal ├── 01MyexternSignal.c ├── 02-1MyTrafficcontral ├── 02-1MyTrafficcontral.c ├── 02MyTrafficContral.c ├── 03-10_2Mysignal ├── 03-10_2Mysignal.c ├── 10-10_23MySigsuspendWait ├── 10-10_23MySigsuspendWait.c ├── 11-10_24MyTELLSignal.c ├── 12-10_25Myabort.c ├── 13-10_26MysystemEd ├── 13-10_26MysystemEd.c ├── 14-10_28MySystem.c ├── 15-10_31MySignalContral ├── 15-10_31MySignalContral.c ├── 2-10_5MySIGALARMsignal ├── 2-10_5MySIGALARMsignal.c ├── 3-10MySIGCHLD ├── 3-10MySIGCHLD.c ├── 3-10_6MySIGCLD ├── 3-10_6MySIGCLD.c ├── 4-10.7.8.9MySIGALRM ├── 5-10_10Myalarm ├── 5-10_10Myalarm.c ├── 6-10MyalarmLongjmp ├── 6-10MyalarmLongjmp.c ├── 7-10.11MySignalSet ├── 7-10.11MySignalSet.c ├── 8-10_20.19.18MySetjmp ├── 8-10_20.19.18MySetjmp.c ├── 9-10-22MySigsuspend ├── 9-10-22MySigsuspend.c ├── changeSystem.md ├── log ├── temp.foo └── trafficContral.txt ├── 11UnixUnitThread ├── 01-11_2MyThreadCreate ├── 01-11_2MyThreadCreate.c ├── 10-11_15MyValueMUtex.c ├── 11-11_16MyTasksPthreadSort ├── 11-11_16MyTasksPthreadSort.c ├── 2-11_3MyThreadExit ├── 2-11_3MyThreadExit.c ├── 3-11_4MyPthread_exitwrong ├── 3-11_4MyPthread_exitwrong.c ├── 4-11_5MyPthreadCleanProgram ├── 4-11_5MyPthreadCleanProgram.c ├── 5-11_10MyPthreadMutex_t.c ├── 6-11_11MyTwoMutex.c ├── 7-11_12MyUpdateTwoMutex.c ├── 8-11_13_Mypthread_mutex_timedlock ├── 8-11_13_Mypthread_mutex_timedlock.c └── 9-11_14MyReadWriteLock.c ├── 12UnixUnitThreadAttr ├── .02-12_4MySpecStatusCreatePthread.c.swo ├── .02-12_4MySpecStatusCreatePthread.c.swp ├── 01MyThreadSide ├── 01MyThreadSide.c ├── 02-12_4MySpecStatusCreatePthread ├── 02-12_4MySpecStatusCreatePthread.c ├── 06-2_16MymutexSignalPthread ├── 06-2_16MymutexSignalPthread.c ├── 07-12_17MyPthread_atfork ├── 07-12_17MyPthread_atfork.c └── 7-12_17.txt ├── 13UnixUnitDaemonFork ├── 01-13_1MyinitDaemonFork ├── 01-13_1MyinitDaemonFork.c ├── 02-13_6MySigleDaemon.c ├── 03-13_7MyDaemonSecond ├── 03-13_7MyDaemonSecond.c ├── 04-13_8MyPthreadGetSignalConf ├── 04-13_8MyPthreadGetSignalConf.c ├── 05-13_9Mysetckoexec.c └── readme.md ├── 14UnixUnitAdvancedIO ├── 01-14_1MyNoBlockIo ├── 01-14_1MyNoBlockIo.c ├── 01stderr.file ├── 01temp.file ├── 0214_5MyAccReleaseLock.c ├── 04-14_7MyDiedLock ├── 04-14_7MyDiedLock.c ├── 05-14_9Myloocfile.c ├── 06-.lock ├── 06-14_12MyConfirmLockSystem ├── 06-14_12MyConfirmLockSystem.c ├── 07-14_20MyTransFile ├── 07-14_20MyTransFile.c ├── 07_testone.md ├── 07_testtwo.md ├── 08-14_21MyAsynchronousIO ├── 08-14_21MyAsynchronousIO.c ├── 08-final.md ├── 08-test.md ├── 09-14_24MyReadnWriten.c ├── 10-14_27MyMemory-mappedIO ├── 10-14_27MyMemory-mappedIO.c ├── 10-Test.txt ├── 10-TestFinal.txt ├── 14_Homework01 ├── 14_Homework01.c ├── _testone.md ├── lockfile ├── readme.md └── templock ├── 15UnixUnitIPC ├── 01-15_5MyParent2ChildForkIPC ├── 01-15_5MyParent2ChildForkIPC.c ├── 02-15_6MyPipeDeparPage ├── 02-15_6MyPipeDeparPage.c ├── 03-15_7MyPipeTellWait.c ├── 04-15_6MyPopenOveriedCp ├── 04-15_6MyPopenOveriedCp.c ├── 05-15_12MyFunctionPopen-Pclose.c ├── 06-15_14MySimpleCp ├── 06-15_14MySimpleCp.c ├── 07-15_15MyExternPopenGetFileToExec ├── 07-15_15MyExternPopenGetFileToExec.c ├── 08-15_17MyCoprocess ├── 08-15_17MyCoprocess.c ├── 09-15_18MyCoprocessApplication ├── 09-15_18MyCoprocessApplication.c ├── 10-15_19MyStdIoCoprocessadd.c ├── 11-15_31MyPrintMemAddr ├── 11-15_31MyPrintMemAddr.c ├── 12-15_33MyIPCSharedMemUse_dev_zero ├── 12-15_33MyIPCSharedMemUse_dev_zero.c ├── 13-15_35MySemaphore.c ├── readme.md └── slock.h ├── 16UnixUnitInterIPCsocket ├── 01-16_9MyGetaddrinfoHowToUse ├── 01-16_9MyGetaddrinfoHowToUse.c ├── 02@03-16_10@11MyConnect_retry.c ├── 04-16_12MyInitSocketFunction.c ├── 05-16_16MyGetSeverTime ├── 05-16_16MyGetSeverTime.c ├── 06-_17MyPostClientTime ├── 06-_17MyPostClientTime.c ├── 07-16_MyExternSever.c └── readme.md ├── GetEnv ├── GetEnv.cpp ├── Myselectexample ├── Myselectexample.c ├── OperatorEnv ├── OperatorEnv.cpp ├── README.md ├── SerityTest.txt ├── UnixUnit01 ├── Dirls.c ├── Dirls.o ├── MyCopy.c ├── MyCopy.o ├── MyPrintuserid.c ├── MyPrintuserid.o ├── MyShell.c ├── MyShell.o ├── MyShell01singal.c ├── MyShell01singal.o ├── Myerror.c ├── Myerror.o ├── Myfock.c ├── Myfork.o ├── Myio.c ├── Myio.data ├── Myio.o └── Test*++.c ├── UnixUnitIO03 ├── MyCreatemptyio ├── MyCreatemptyio.c ├── MyCreatio.c ├── MyEffectio ├── MyEffectio.c ├── MyFileioAnnoce ├── MyFileioAnnoce.c ├── MyStdio ├── MyStdio.c ├── Myoffsetio ├── Myoffsetio.c ├── file └── myfile.txt ├── UnixUnitIO04 ├── 10Mydev ├── 10Mydev.c ├── MyFileDirTraverse ├── MyFileDirTraverse.c ├── MyJudgementIo ├── MyJudgementIo.c ├── Myaccessio ├── Myaccessio.c ├── Mychdir08 ├── Mychdir08.c ├── Mychmodio ├── Mychmodio.c ├── Myfutimes ├── Myfutimes.c ├── Mygetcwd09 ├── Mygetcwd09.c ├── Mylink ├── Mylink.c ├── Myumask ├── Myumask.c ├── bar ├── foo └── testln │ ├── a │ └── testdir ├── apue.3e ├── DISCLAIMER ├── Make.defines.freebsd ├── Make.defines.linux ├── Make.defines.macos ├── Make.defines.solaris ├── Make.libapue.inc ├── Makefile ├── README ├── advio │ ├── Makefile │ ├── deadlock.c │ ├── fixup.awk │ ├── lockfile.c │ ├── mandatory.c │ ├── mcopy2.c │ ├── nonblockw.c │ ├── readn.c │ ├── rot13a.c │ ├── rot13c2.c.in │ └── writen.c ├── daemons │ ├── Makefile │ ├── init.c │ ├── reread.c │ ├── reread2.c │ └── single.c ├── datafiles │ ├── Makefile │ ├── getpwnam.c │ └── strftime.c ├── db │ ├── Makefile │ ├── apue_db.h │ ├── db.c │ └── t4.c ├── environ │ ├── Makefile │ ├── cmd1.c │ ├── cmd2.c │ ├── doatexit.c │ ├── echoarg.c │ ├── getrlimit.c │ ├── hello1.c │ ├── opendata.c │ ├── scope.c │ └── testjmp.c ├── exercises │ ├── Makefile │ ├── asyncsocket.c │ ├── bo.c │ ├── fifo1.c │ ├── fmemopen.c │ ├── getlogin.c │ ├── getpw44bsd.c │ ├── getpwsvr4.c │ ├── goodexit.c │ ├── longpath.c │ ├── openmax.c │ ├── pendlock.c │ ├── pollmsg2.c │ ├── prtime.c │ ├── sizepipe.c │ ├── sleep.c │ ├── sleepus_poll.c │ ├── sleepus_select.c │ ├── vfork3.c │ └── zombie.c ├── figlinks │ ├── fig1.10 │ ├── fig1.3 │ ├── fig1.4 │ ├── fig1.5 │ ├── fig1.6 │ ├── fig1.7 │ ├── fig1.8 │ ├── fig1.9 │ ├── fig10.10 │ ├── fig10.11 │ ├── fig10.12 │ ├── fig10.14 │ ├── fig10.15 │ ├── fig10.18 │ ├── fig10.19 │ ├── fig10.2 │ ├── fig10.20 │ ├── fig10.22 │ ├── fig10.23 │ ├── fig10.24 │ ├── fig10.25 │ ├── fig10.26 │ ├── fig10.28 │ ├── fig10.29 │ ├── fig10.31 │ ├── fig10.5 │ ├── fig10.6 │ ├── fig10.7 │ ├── fig10.8 │ ├── fig10.9 │ ├── fig11.10 │ ├── fig11.11 │ ├── fig11.12 │ ├── fig11.14 │ ├── fig11.15 │ ├── fig11.16 │ ├── fig11.2 │ ├── fig11.3 │ ├── fig11.4 │ ├── fig11.5 │ ├── fig12.11 │ ├── fig12.12 │ ├── fig12.13 │ ├── fig12.16 │ ├── fig12.17 │ ├── fig12.4 │ ├── fig12.8 │ ├── fig13.1 │ ├── fig13.6 │ ├── fig13.7 │ ├── fig13.8 │ ├── fig13.9 │ ├── fig14.1 │ ├── fig14.12 │ ├── fig14.20 │ ├── fig14.21 │ ├── fig14.24 │ ├── fig14.27 │ ├── fig14.5 │ ├── fig14.6 │ ├── fig14.7 │ ├── fig14.9 │ ├── fig15.11 │ ├── fig15.12 │ ├── fig15.14 │ ├── fig15.15 │ ├── fig15.17 │ ├── fig15.18 │ ├── fig15.19 │ ├── fig15.31 │ ├── fig15.33 │ ├── fig15.35 │ ├── fig15.5 │ ├── fig15.6 │ ├── fig15.7 │ ├── fig16.10 │ ├── fig16.11 │ ├── fig16.12 │ ├── fig16.16 │ ├── fig16.17 │ ├── fig16.18 │ ├── fig16.19 │ ├── fig16.20 │ ├── fig16.22 │ ├── fig16.9 │ ├── fig17.10 │ ├── fig17.12 │ ├── fig17.13 │ ├── fig17.14 │ ├── fig17.15 │ ├── fig17.16 │ ├── fig17.17 │ ├── fig17.18 │ ├── fig17.19 │ ├── fig17.2 │ ├── fig17.20 │ ├── fig17.21 │ ├── fig17.22 │ ├── fig17.23 │ ├── fig17.24 │ ├── fig17.25 │ ├── fig17.26 │ ├── fig17.27 │ ├── fig17.28 │ ├── fig17.29 │ ├── fig17.3 │ ├── fig17.30 │ ├── fig17.31 │ ├── fig17.4 │ ├── fig17.5 │ ├── fig17.8 │ ├── fig17.9 │ ├── fig18.10 │ ├── fig18.11 │ ├── fig18.12 │ ├── fig18.13 │ ├── fig18.14 │ ├── fig18.15 │ ├── fig18.16 │ ├── fig18.17 │ ├── fig18.18 │ ├── fig18.20 │ ├── fig18.21 │ ├── fig18.22 │ ├── fig19.10 │ ├── fig19.11 │ ├── fig19.12 │ ├── fig19.16 │ ├── fig19.9 │ ├── fig2.13 │ ├── fig2.14 │ ├── fig2.16 │ ├── fig2.17 │ ├── fig20.3 │ ├── fig3.1 │ ├── fig3.11 │ ├── fig3.12 │ ├── fig3.2 │ ├── fig3.5 │ ├── fig4.12 │ ├── fig4.16 │ ├── fig4.21 │ ├── fig4.22 │ ├── fig4.23 │ ├── fig4.24 │ ├── fig4.25 │ ├── fig4.3 │ ├── fig4.8 │ ├── fig4.9 │ ├── fig5.11 │ ├── fig5.12 │ ├── fig5.13 │ ├── fig5.15 │ ├── fig5.4 │ ├── fig5.5 │ ├── fig6.11 │ ├── fig6.2 │ ├── fig7.1 │ ├── fig7.11 │ ├── fig7.13 │ ├── fig7.14 │ ├── fig7.16 │ ├── fig7.3 │ ├── fig7.4 │ ├── fig7.9 │ ├── fig8.1 │ ├── fig8.12 │ ├── fig8.13 │ ├── fig8.16 │ ├── fig8.17 │ ├── fig8.20 │ ├── fig8.21 │ ├── fig8.22 │ ├── fig8.23 │ ├── fig8.24 │ ├── fig8.25 │ ├── fig8.28 │ ├── fig8.29 │ ├── fig8.3 │ ├── fig8.30 │ ├── fig8.31 │ ├── fig8.5 │ ├── fig8.6 │ ├── fig8.8 │ ├── fig9.12 │ ├── figB.1 │ ├── figB.3 │ ├── figB.4 │ ├── figC.1 │ ├── figC.10 │ ├── figC.12 │ ├── figC.13 │ ├── figC.14 │ ├── figC.15 │ ├── figC.16 │ ├── figC.17 │ ├── figC.18 │ ├── figC.20 │ ├── figC.22 │ ├── figC.23 │ ├── figC.24 │ ├── figC.3 │ ├── figC.4 │ ├── figC.5 │ ├── figC.6 │ ├── figC.7 │ └── figC.8 ├── filedir │ ├── Makefile │ ├── access.c │ ├── cdpwd.c │ ├── changemod.c │ ├── devrdev.c │ ├── filetype.c │ ├── ftw8.c │ ├── mycd.c │ ├── umask.c │ ├── unlink.c │ └── zap.c ├── fileio │ ├── Makefile │ ├── fileflags.c │ ├── hole.c │ ├── mycat.c │ ├── seek.c │ └── setfl.c ├── intro │ ├── Makefile │ ├── getcputc.c │ ├── hello.c │ ├── ls1.c │ ├── mycat.c │ ├── shell1.c │ ├── shell2.c │ ├── testerror.c │ └── uidgid.c ├── ipc1 │ ├── Makefile │ ├── add2.c │ ├── add2stdio.c │ ├── devzero.c │ ├── myuclc.c │ ├── pipe1.c │ ├── pipe2.c │ ├── pipe4.c │ ├── popen.c │ ├── popen1.c │ ├── popen2.c │ ├── slock.c │ ├── slock.h │ ├── tellwait.c │ └── tshm.c ├── ipc2 │ ├── Makefile │ ├── bindunix.c │ ├── open.fe │ │ ├── Makefile │ │ ├── main.c │ │ ├── open.c │ │ └── open.h │ ├── open │ │ ├── Makefile │ │ ├── main.c │ │ ├── open.c │ │ └── open.h │ ├── opend.fe │ │ ├── Makefile │ │ ├── cliargs.c │ │ ├── main.c │ │ ├── opend.h │ │ └── request.c │ ├── opend │ │ ├── Makefile │ │ ├── cliargs.c │ │ ├── client.c │ │ ├── loop.poll.c │ │ ├── loop.select.c │ │ ├── main.c │ │ ├── opend.h │ │ └── request.c │ ├── pollmsg.c │ ├── recvfd2.c │ ├── sendfd2.c │ └── sendmsg.c ├── lib │ ├── Makefile │ ├── Orecvfd.c │ ├── bufargs.c │ ├── cliconn.c │ ├── clrfl.c │ ├── daemonize.c │ ├── errorlog.c │ ├── lockreg.c │ ├── locktest.c │ ├── nspipe.c │ ├── openmax.c │ ├── pathalloc.c │ ├── popen.c │ ├── prexit.c │ ├── prmask.c │ ├── ptyfork.c │ ├── ptyopen.c │ ├── readn.c │ ├── recvfd.c │ ├── semaph.c │ ├── senderr.c │ ├── sendfd.c │ ├── servaccept.c │ ├── servlisten.c │ ├── setfd.c │ ├── setfl.c │ ├── signal.c │ ├── signalintr.c │ ├── sleep.c │ ├── sleepus.c │ ├── spipe.c │ ├── strerror.c │ ├── tellwait.c │ ├── ttymodes.c │ └── writen.c ├── printer │ ├── Makefile │ ├── ipp.h │ ├── print.c │ ├── print.h │ ├── printd.c │ └── util.c ├── proc │ ├── Makefile │ ├── awkexample │ ├── echoall.c │ ├── exec1.c │ ├── exec2.c │ ├── fork1.c │ ├── fork2.c │ ├── nice.c │ ├── pracct.c │ ├── pruids.c │ ├── system.c │ ├── systest1.c │ ├── systest3.c │ ├── tellwait1.c │ ├── tellwait2.c │ ├── test1.c │ ├── times1.c │ ├── vfork1.c │ └── wait1.c ├── pty │ ├── Makefile │ ├── driver.c │ ├── loop.c │ └── main.c ├── relation │ ├── Makefile │ └── orphan3.c ├── signals │ ├── Makefile │ ├── abort.c │ ├── child.c │ ├── critical.c │ ├── mask.c │ ├── read1.c │ ├── read2.c │ ├── reenter.c │ ├── setops.c │ ├── sigtstp.c │ ├── sigusr.c │ ├── sleep1.c │ ├── sleep2.c │ ├── suspend1.c │ ├── suspend2.c │ ├── system.c │ ├── systest2.c │ └── tsleep2.c ├── sockets │ ├── clconn.c │ ├── clconn2.c │ ├── findsvc.c │ ├── initsrv1.c │ ├── initsrv2.c │ ├── makefile │ ├── ruptime-dg.c │ ├── ruptime.c │ ├── ruptimed-dg.c │ ├── ruptimed-fd.c │ └── ruptimed.c ├── standards │ ├── Makefile │ ├── conf.c.modified │ ├── makeconf.awk │ ├── makeopt.awk │ ├── pathconf-lim.sym │ ├── pathconf-opt.sym │ ├── sysconf-lim.sym │ └── sysconf-opt.sym ├── stdio │ ├── Makefile │ ├── buf.c │ ├── fgetsfputs.c │ ├── getcharbug.c │ ├── getcputc.c │ ├── memstr.c │ ├── mkstemp.c │ └── tempfiles.c ├── systype.sh ├── termios │ ├── Makefile │ ├── csize.c │ ├── ctermid.c │ ├── getpass.c │ ├── isatty.c │ ├── settty.c │ ├── t_getpass.c │ ├── t_isatty.c │ ├── t_raw.c │ ├── t_ttyname.c │ ├── ttyname.c │ └── winch.c ├── threadctl │ ├── Makefile │ ├── atfork.c │ ├── detach.c │ ├── getenv1.c │ ├── getenv2.c │ ├── getenv3.c │ ├── suspend.c │ └── timeout.c └── threads │ ├── Makefile │ ├── badexit2.c │ ├── barrier.c │ ├── cleanup.c │ ├── condvar.c │ ├── exitstatus.c │ ├── maketimeout.c │ ├── mutex1.c │ ├── mutex2.c │ ├── mutex3.c │ ├── rwlock.c │ ├── threadid.c │ └── timedlock.c ├── apue.h ├── epolldir ├── Client ├── Client1 ├── Sever ├── client.cpp ├── epollClient.cpp ├── epollHeader.h └── epollSever.cpp ├── error.c └── fork.c /05UnixunitStdIo/01MyEffectIo: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/05UnixunitStdIo/01MyEffectIo -------------------------------------------------------------------------------- /05UnixunitStdIo/01MyEffectIo.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int main(void) 3 | { 4 | int c; 5 | while((c=getc(stdin))!=EOF) 6 | { 7 | if(putc(c,stdout)==EOF) 8 | err_sys("output error"); 9 | } 10 | if(ferror(stdin)) 11 | err_sys("input error"); 12 | exit(0); 13 | 14 | 15 | } 16 | -------------------------------------------------------------------------------- /05UnixunitStdIo/02MyeffectioRdWr: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/05UnixunitStdIo/02MyeffectioRdWr -------------------------------------------------------------------------------- /05UnixunitStdIo/02MyeffectioRdWr.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int main(void) 3 | { 4 | char buf[MAXLINE]; 5 | while(fgets(buf,MAXLINE,stdin)!=NULL) 6 | if(fputs(buf,stdout)==EOF) 7 | err_sys("output error"); 8 | if(ferror(stdin)) 9 | err_sys("input error"); 10 | exit(0); 11 | 12 | } 13 | -------------------------------------------------------------------------------- /05UnixunitStdIo/03MyIoStdio: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/05UnixunitStdIo/03MyIoStdio -------------------------------------------------------------------------------- /05UnixunitStdIo/04Mytempfile: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/05UnixunitStdIo/04Mytempfile -------------------------------------------------------------------------------- /05UnixunitStdIo/04Mytempfile.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int main(void) 3 | { 4 | char name[L_tmpnam],line[MAXLINE]; 5 | FILE*fp; 6 | printf("%s \n",tmpnam(NULL)); 7 | tmpnam(name); 8 | printf("%s\n",name); 9 | if((fp=tmpfile())==NULL) 10 | err_sys("tmpfile error"); 11 | fputs("one line of output \n",fp); 12 | rewind(fp); 13 | if(fgets(line,sizeof(line),fp)==NULL) 14 | err_sys("fgets error"); 15 | fputs(line,stdout);// print the line we wrote 16 | exit(0); 17 | } 18 | //每次产生不同的临时文件，但是临时文件对我们来说是不可兼得的，所以说是不安全的，对于ISO 从规范来说 ，建议使用它更安全的mkstemp函数。 19 | -------------------------------------------------------------------------------- /05UnixunitStdIo/05Mymsktemp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/05UnixunitStdIo/05Mymsktemp -------------------------------------------------------------------------------- /05UnixunitStdIo/05Mymsktemp.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | void make_temp(char *); 4 | int main(void) 5 | { 6 | char good_template[]="/tmp/dirXXXXXX"; 7 | char *bad_template="/tmp/dirXXXXXX"; 8 | printf("trying to create first temp file...\n"); 9 | make_temp(good_template); 10 | printf("trying to create second temp file...\n"); 11 | make_temp(bad_template); 12 | exit(0); 13 | } 14 | 15 | void make_temp(char * template) 16 | { 17 | int fd; 18 | struct stat sbuf; 19 | if((fd=mkstemp(template))<0) 20 | err_sys("can't create tempfile"); 21 | printf("temp name =%s\n",template); 22 | close(fd); 23 | if((stat(template,&sbuf))<0) 24 | { 25 | if(errno==ENOENT) 26 | printf("file doesn't exist !\n"); 27 | else 28 | err_sys("stat failed"); 29 | 30 | } 31 | else 32 | { 33 | printf("file exist \n"); 34 | unlink(template); 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /05UnixunitStdIo/065-14Memorystream: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/05UnixunitStdIo/065-14Memorystream -------------------------------------------------------------------------------- /05UnixunitStdIo/std.err: -------------------------------------------------------------------------------- 1 | one line to standard error 2 | -------------------------------------------------------------------------------- /05UnixunitStdIo/std.out: -------------------------------------------------------------------------------- 1 | enter any character : 2 | stream =stdin ,fully buffered, buffered size =4096 3 | stream =stdout ,fully buffered, buffered size =4096 4 | stream =stderr ,unbuffered, buffered size =1 5 | stream =/etc/passwd ,fully buffered, buffered size =4096 6 | -------------------------------------------------------------------------------- /06UnixunitsystemdateInfo/016-2Mygetpwnam.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | struct passwd*getpwnam(const char * name) 5 | { 6 | struct passwd *ptr; 7 | setpwent(); 8 | while((ptr=getpwent())!=NULL) 9 | if(strcmp(name,ptr->pw_name)==0) 10 | break; 11 | endpwent(); 12 | return (0); 13 | 14 | 15 | 16 | 17 | 18 | } 19 | -------------------------------------------------------------------------------- /06UnixunitsystemdateInfo/02Mygettime: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/06UnixunitsystemdateInfo/02Mygettime -------------------------------------------------------------------------------- /06UnixunitsystemdateInfo/02Mygettime.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | int main(void) 5 | { 6 | time_t t; 7 | struct tm* mytime; 8 | char buf[16]; 9 | char buff[64]; 10 | time(&t); 11 | mytime=localtime(&t); 12 | if(strftime(buf,16,"time and date : %r ,%a %b %d, %Y",mytime)==0) 13 | printf("bufer length is too small\n"); 14 | else 15 | printf("%s\n", buf); 16 | if(strftime(buff,64,"time and date : %r ,%a %b %d, %Y",mytime)==0) 17 | printf("bufer length is too small\n"); 18 | else 19 | printf("%s\n",buff); 20 | exit(0); 21 | } 22 | -------------------------------------------------------------------------------- /06UnixunitsystemdateInfo/03Myuname: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/06UnixunitsystemdateInfo/03Myuname -------------------------------------------------------------------------------- /06UnixunitsystemdateInfo/03Myuname.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | #include 4 | int main(void) 5 | { 6 | int i; 7 | struct utsname myuname; 8 | if((i=uname(&myuname))<0) 9 | err_sys("uname error"); 10 | else 11 | printf("%s\t%s\t%s\t%s\t%s",myuname.sysname,myuname.nodename,myuname.version,myuname.release,myuname.machine); 12 | 13 | 14 | 15 | // char buf[64]; 16 | // if((gethostname(&buf,strlen(buf))<0) 17 | // err_sys("gethostname error"); 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | exit(0); 30 | } 31 | -------------------------------------------------------------------------------- /06UnixunitsystemdateInfo/06.2Myshadow: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/06UnixunitsystemdateInfo/06.2Myshadow -------------------------------------------------------------------------------- /06UnixunitsystemdateInfo/06.2Myshadow.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | int main(void) 4 | { 5 | struct spwd *ptr; 6 | if((ptr=getspnam("sar"))==NULL) 7 | err_sys("getspnam error"); 8 | printf("sp_ pwdp=%s\n",ptr->sp_pwdp==NULL||ptr->sp_pwdp[0]==0? "(null)" : ptr->sp_pwdp); 9 | 10 | 11 | 12 | exit(0); 13 | } 14 | -------------------------------------------------------------------------------- /07UnixunitForkEnv/01Myhelloworld: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/07UnixunitForkEnv/01Myhelloworld -------------------------------------------------------------------------------- /07UnixunitForkEnv/01Myhelloworld.c: -------------------------------------------------------------------------------- 1 | #include 2 | int f1(int val) 3 | { 4 | int num=0; 5 | int *ptr=# 6 | if(val==0) 7 | { 8 | int val=5; 9 | ptr=&val; 10 | } 11 | return (*ptr+1); 12 | } 13 | int main(void) 14 | { 15 | printf("hello world !\n"); 16 | printf("%d",f1(1)); 17 | exit(0); 18 | } 19 | -------------------------------------------------------------------------------- /07UnixunitForkEnv/02Myexit: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/07UnixunitForkEnv/02Myexit -------------------------------------------------------------------------------- /07UnixunitForkEnv/02Myexit.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | static void my_exit1(void); 3 | static void my_exit2(void); 4 | 5 | 6 | int main (void) 7 | { 8 | if(atexit(my_exit2)!=0) 9 | err_sys("can't register my_exit2)"); 10 | if(atexit(my_exit1)!=0) 11 | err_sys("can't register my_exit1"); 12 | if(atexit(my_exit1)!=0) 13 | err_sys("can't register my_exit1"); 14 | printf("main is done \n"); 15 | return 0; 16 | 17 | } 18 | 19 | static void my_exit1(void) 20 | { 21 | printf("first exit hander\n"); 22 | 23 | } 24 | static void my_exit2(void) 25 | { 26 | printf("second exit hander\n"); 27 | 28 | } 29 | 30 | 31 | -------------------------------------------------------------------------------- /07UnixunitForkEnv/03Myecho: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/07UnixunitForkEnv/03Myecho -------------------------------------------------------------------------------- /07UnixunitForkEnv/03Myecho.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int main(int argc,char **argv,char ** envp) 3 | { 4 | int i; 5 | for(i=0;i0) 24 | { 25 | switch(cmd) 26 | { 27 | case TOK_ADD: 28 | cmd_add(); 29 | break; 30 | } 31 | 32 | } 33 | 34 | 35 | } 36 | 37 | 38 | void cmd_add(void) 39 | { 40 | int token; 41 | token=get_token(); 42 | //reset the processing for this command 43 | 44 | } 45 | int get_token(void) 46 | { 47 | //fetch next token from line pointed to by tok_ptr 48 | 49 | 50 | } 51 | -------------------------------------------------------------------------------- /07UnixunitForkEnv/057-11externMyjmp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/07UnixunitForkEnv/057-11externMyjmp -------------------------------------------------------------------------------- /07UnixunitForkEnv/067-13Mytestjmp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/07UnixunitForkEnv/067-13Mytestjmp -------------------------------------------------------------------------------- /07UnixunitForkEnv/a.out: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/07UnixunitForkEnv/a.out -------------------------------------------------------------------------------- /08ForkContral/01.out: -------------------------------------------------------------------------------- 1 | a write t ostdout 2 | before fork 3 | pid=20833 glob=7 val =89 4 | before fork 5 | pid=20834 glob=7 val =89 6 | -------------------------------------------------------------------------------- /08ForkContral/018-1MyforkGetid: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/018-1MyforkGetid -------------------------------------------------------------------------------- /08ForkContral/018-1MyforkGetid.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int globval=6; 3 | char buf[]="a write t ostdout\n"; 4 | int main(int argc,char **argv) 5 | { 6 | int var; 7 | pid_t pid; 8 | var =88; 9 | if(write(STDOUT_FILENO,buf,sizeof(buf)-1)!=sizeof(buf)-1) 10 | err_sys("write error"); 11 | printf("before fork\n"); 12 | if(pid=fork()<0) 13 | { 14 | err_sys("fork error"); 15 | } 16 | else if(pid==0) 17 | { 18 | globval++; 19 | var++; 20 | } 21 | else 22 | { 23 | sleep(2); 24 | } 25 | 26 | printf("pid=%ld \t glob=%d \t val =%d\n ",(long)getpid(),globval,var); 27 | 28 | 29 | exit(0); 30 | } 31 | 32 | -------------------------------------------------------------------------------- /08ForkContral/028-3Myvfork: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/028-3Myvfork -------------------------------------------------------------------------------- /08ForkContral/028-3Myvfork.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int globval =6; 3 | 4 | int main(int argc,char ** argv) 5 | { 6 | int val; 7 | pid_t pid ; 8 | val=88; 9 | printf("before vfork\n"); 10 | if((pid=vfork())<0) 11 | { 12 | err_sys("vfork error"); 13 | } 14 | else if(pid==0) 15 | { 16 | globval++; 17 | val++; 18 | _exit(0); 19 | } 20 | printf("pid=%ld,glob=%d,val=%d\n",(long)getpid(),globval,val); 21 | exit(0); 22 | 23 | 24 | 25 | 26 | } 27 | -------------------------------------------------------------------------------- /08ForkContral/03-8_6Mypr_exitstatus: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/03-8_6Mypr_exitstatus -------------------------------------------------------------------------------- /08ForkContral/03-8_6Mypr_exitstatus.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | int main(void) 4 | { 5 | pid_t pid; 6 | int status; 7 | if((pid=fork())<0) 8 | err_sys("fork error"); 9 | else if(pid==0)//chile 10 | exit(7); 11 | 12 | 13 | if(wait(&status)!=pid) 14 | err_sys("wait error"); 15 | pr_exit(status); 16 | 17 | if((pid=fork())<0) 18 | err_sys("fork error"); 19 | else if(pid==0) 20 | abort(); 21 | 22 | if(wait(&status)!=pid) 23 | err_sys("wait error"); 24 | pr_exit(status); 25 | 26 | if((pid=fork())<0) 27 | err_sys("fork error"); 28 | else if(pid==0) 29 | status /=0; 30 | if(wait(&status)!=pid) 31 | err_sys("wait error"); 32 | pr_exit(status); 33 | 34 | 35 | exit(0); 36 | 37 | } 38 | -------------------------------------------------------------------------------- /08ForkContral/04-8_8MysolveZombieFork: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/04-8_8MysolveZombieFork -------------------------------------------------------------------------------- /08ForkContral/04-8_8MysolveZombieFork.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | //通过调用fork()函数两次来解决僵尸进程的出现 3 | int main(void) 4 | { 5 | pid_t pid; 6 | if((pid=fork())<0) 7 | err_sys("fork error"); 8 | else if(pid==0) 9 | { 10 | if((pid=fork())<0) 11 | err_sys("fork error"); 12 | else if(pid>0) 13 | exit(0); 14 | sleep(2); 15 | printf("second child ,parent pid =%ld\n, self pid=%ld\n",(long )getppid(),(long)getpid()); 16 | exit(0); 17 | } 18 | if(waitpid(pid ,NULL,0)!=pid) 19 | err_sys("waitpid error"); 20 | //we're the parent we continue executing ,knowing that we are not the parent of the second child 21 | 22 | 23 | 24 | exit(0); 25 | } 26 | -------------------------------------------------------------------------------- /08ForkContral/05-8-12MyIpc: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/05-8-12MyIpc -------------------------------------------------------------------------------- /08ForkContral/05-8-12MyIpc.c: -------------------------------------------------------------------------------- 1 | //To solve the race condition 解决竞争关系和轮询的情况 2 | //在unix中有专门的IPC通信或者管道符操作。 3 | #include"apue.h" 4 | static void charactatime(char *); 5 | int main(void) 6 | { 7 | pid_t pid ; 8 | if((pid= fork())<0) 9 | err_sys("fork error"); 10 | else if(pid==0) 11 | charactatime("output from child\n"); 12 | else 13 | charactatime("output from parent\n"); 14 | 15 | 16 | exit(0); 17 | } 18 | static void charactatime(char*str) 19 | { 20 | char *ptr; 21 | int c; 22 | setbuf(stdout,NULL); 23 | for(ptr=str;(c=*ptr++)!=0;) 24 | putc(c,stdout); 25 | } 26 | //竞争策略对于完善的linux系统来说已经完善的很好了，对于一些宏，或者函数也不再需要 27 | -------------------------------------------------------------------------------- /08ForkContral/06-8_13MyextendIPC: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/06-8_13MyextendIPC -------------------------------------------------------------------------------- /08ForkContral/06-8_13MyextendIPC.c: -------------------------------------------------------------------------------- 1 | //To solve the race condition 解决竞争关系和轮询的情况 2 | //在unix中有专门的IPC通信或者管道符操作。 3 | #include"apue.h" 4 | static void charactatime(char *); 5 | int main(void) 6 | { 7 | pid_t pid ; 8 | TELL_WAIT(); 9 | if((pid= fork())<0) 10 | err_sys("fork error"); 11 | else if(pid==0) 12 | { 13 | charactatime("output from child\n"); 14 | WAIT_PARENT(); 15 | } 16 | else 17 | { 18 | charactatime("output from parent\n"); 19 | TELL_CHILD(pid); 20 | } 21 | 22 | exit(0); 23 | } 24 | static void charactatime(char*str) 25 | { 26 | char *ptr; 27 | int c; 28 | setbuf(stdout,NULL); 29 | for(ptr=str;(c=*ptr++)!=0;) 30 | putc(c,stdout); 31 | } 32 | -------------------------------------------------------------------------------- /08ForkContral/08-8_16Myexec: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/08-8_16Myexec -------------------------------------------------------------------------------- /08ForkContral/08-8_16Myexec.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | char * env_init[]={"USER=unknown","PATH=/tmp",NULL}; 4 | int main(int argc,char **argv) 5 | { 6 | pid_t pid; 7 | if((pid=fork())<0) 8 | { 9 | err_sys("fork error"); 10 | } 11 | else if(pid==0) 12 | { 13 | if(execle("~/linuxshell/ceshi.sh",(char *)0,env_init)<0) 14 | err_sys("execle error"); 15 | 16 | } 17 | if(waitpid(pid,NULL,0)<0) 18 | err_sys("wait error"); 19 | if((pid=fork())<0) 20 | { 21 | err_sys("fork error"); 22 | } 23 | else if (pid ==0 ) 24 | { 25 | if(execlp("~/linuxshell/ceshi.sh","only 1 arg",(char*)0)<0) 26 | err_sys("execlp error"); 27 | } 28 | exit(0); 29 | 30 | } 31 | -------------------------------------------------------------------------------- /08ForkContral/09-8-17Myechoall: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/09-8-17Myechoall -------------------------------------------------------------------------------- /08ForkContral/09-8-17Myechoall.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int main(int argc,char **argv,char ** env) 3 | { 4 | int i; 5 | char **ptr; 6 | for(i=0;i 2 | #include 3 | #include 4 | int mysystem(const char *cmdstring) 5 | { 6 | pid_t pid; 7 | int status; 8 | 9 | if((pid=fork())<0) 10 | { 11 | status =-1; 12 | 13 | } 14 | else if(pid==0) 15 | { 16 | execl("/bin/sh","sh","-c",cmdstring,(char *)0); 17 | _exit(127); 18 | } 19 | 20 | else 21 | { 22 | while(waitpid(pid,&status,0)<0) 23 | { 24 | status=-1; 25 | break; 26 | } 27 | } 28 | 29 | return (status); 30 | 31 | } 32 | -------------------------------------------------------------------------------- /08ForkContral/12-8_23MytestSystem: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/12-8_23MytestSystem -------------------------------------------------------------------------------- /08ForkContral/12-8_23MytestSystem.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | int main(int argc,char ** argv) 4 | { 5 | int status; 6 | if((status=system("date"))<0) 7 | err_sys("system() error"); 8 | pr_exit(status); 9 | if((status=system("nosuchcommand"))<0) 10 | err_sys("system() error"); 11 | pr_exit(status); 12 | if((status=system("who ;exit 44"))<0) 13 | err_sys("system() error"); 14 | pr_exit(status); 15 | exit(0); 16 | 17 | 18 | 19 | } 20 | -------------------------------------------------------------------------------- /08ForkContral/13-8-24MycommandSystem: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/13-8-24MycommandSystem -------------------------------------------------------------------------------- /08ForkContral/13-8-24MycommandSystem.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int main(int argc,char **argv) 3 | { 4 | int status; 5 | if(argc<2) 6 | err_quit("command-line argument required"); 7 | if((status=system(argv[1]))<0) 8 | err_sys("system() error"); 9 | pr_exit(status); 10 | exit(0); 11 | } 12 | -------------------------------------------------------------------------------- /08ForkContral/14-08_28MyProcessAccount: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/14-08_28MyProcessAccount -------------------------------------------------------------------------------- /08ForkContral/15-08_29MyTestProcessAccount: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/15-08_29MyTestProcessAccount -------------------------------------------------------------------------------- /08ForkContral/16-08_30Mynice: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/08ForkContral/16-08_30Mynice 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else if(pid==0) 9 | exit(0); 10 | //父进程 11 | sleep(4); 12 | system(PSCMD); 13 | exit(0); 14 | } 15 | -------------------------------------------------------------------------------- /09Forkresulation/01-09_12MyOrphanProcess: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/09Forkresulation/01-09_12MyOrphanProcess -------------------------------------------------------------------------------- /09Forkresulation/01-09_12MyOrphanProcess.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | static void sig_ids(int signo) 4 | { 5 | printf("SIGHUP received,pid=%ld\n",(long)getpid()); 6 | } 7 | static void pr_ids(char *name) 8 | { 9 | //分别获取进程组id父进程id，进程组id前台进程组id 10 | printf("%s :pid =%ld,ppid=%ld,pgid=%ld,tpgrp=%ld\n",name,(long)getpid(),(long)getppid(),(long)getpgrp(),(long)tcgetpgrp(STDIN_FILENO)); 11 | fflush(stdout);//刷新缓冲区 12 | } 13 | 14 | int main (void) 15 | { 16 | char c; 17 | pid_t pid; 18 | pr_ids("parent"); 19 | if((pid=fork())<0) 20 | err_sys("fork error"); 21 | else if(pid>0) 22 | { 23 | sleep(5); 24 | } 25 | else 26 | { 27 | pr_ids("child"); 28 | signal(SIGHUP,sig_ids); 29 | kill(getpid(),SIGTSTP); 30 | pr_ids("child"); 31 | if(read(STDIN_FILENO,&c,1)!=1) 32 | printf("read error %d on contralling TTY\n",errno); 33 | } 34 | exit(0); 35 | } 36 | -------------------------------------------------------------------------------- /09Forkresulation/9.1practice.md: -------------------------------------------------------------------------------- 1 | ###?考虑6.8节中说明的utmp和wtmp文件，为什么logout记录是由init进程写入的？对于网络登录的原理是否相同？ 2 | 3 | ``` 4 | 这个是这样的，因为init是登录shell的父进程，当登录shell终止时他收到SIGCHLD信号量，所以init进程知道什么时候 5 | 终端用户注销。 6 | 网络登录没有包含init在utmp文件和wtmp文件的登录项和相应的注销项是由一个处理登录并检测注销的进程写的。一般是 initd、telnetd等守护进程 7 | ``` 8 | -------------------------------------------------------------------------------- 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-------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | > File Name: 13-10_26MysystemEd.c 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Fri 22 Jan 2016 05:05:13 PM CST 6 | ************************************************************************/ 7 | 8 | #include "apue.h" 9 | static void sig_int(int signo ) 10 | { 11 | printf("caugth SIGINT \n"); 12 | } 13 | static void sig_chld(int signo ) 14 | { 15 | printf("caugth SIGCHLD\n"); 16 | } 17 | int main(void) 18 | { 19 | if(signal(SIGINT,sig_int)==SIG_ERR) 20 | err_sys("signal sigint error"); 21 | if(signal(SIGCHLD,sig_chld)==SIG_ERR) 22 | err_sys("signal sigchld error"); 23 | 24 | if(system("/bin/ed")<0) 25 | err_sys("system() error"); 26 | exit (0); 27 | } 28 | -------------------------------------------------------------------------------- /10Signal/14-10_28MySystem.c: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | > File Name: 13-10_26MysystemEd.c 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Fri 22 Jan 2016 05:05:13 PM CST 6 | ************************************************************************/ 7 | 8 | #include "apue.h" 9 | static void sig_int(int signo ) 10 | { 11 | printf("caugth SIGINT \n"); 12 | } 13 | static void sig_chld(int signo ) 14 | { 15 | printf("caugth SIGCHLD\n"); 16 | } 17 | int main(void) 18 | { 19 | if(signal(SIGINT,sig_int)==SIG_ERR) 20 | err_sys("signal sigint error"); 21 | if(signal(SIGCHLD,sig_chld)==SIG_ERR) 22 | err_sys("signal sigchld error"); 23 | 24 | if(system("/bin/ed")<0) 25 | err_sys("system() error"); 26 | exit (0); 27 | } 28 | -------------------------------------------------------------------------------- /10Signal/15-10_31MySignalContral: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/10Signal/15-10_31MySignalContral -------------------------------------------------------------------------------- /10Signal/2-10_5MySIGALARMsignal: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/10Signal/2-10_5MySIGALARMsignal -------------------------------------------------------------------------------- /10Signal/2-10_5MySIGALARMsignal.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | 4 | static void my_alarm(int signo) 5 | { 6 | struct passwd * rootptr; 7 | printf("int the signal function \n"); 8 | if((rootptr=getpwnam("root"))==NULL) 9 | err_sys("getpwnam(root) error\n"); 10 | alarm(1); 11 | } 12 | 13 | 14 | int main(void) 15 | { 16 | struct passwd *ptr; 17 | signal(SIGALRM,my_alarm); 18 | alarm(1); 19 | for(;;) 20 | { 21 | if((ptr=getpwnam("victor"))==NULL) 22 | err_sys("getpwnam(victor) error\n"); 23 | if(strcmp(ptr->pw_name,"victor")!=0) 24 | printf("return value corrupted!,pw_name=%s\n",ptr->pw_name); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /10Signal/3-10MySIGCHLD: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/10Signal/3-10MySIGCHLD -------------------------------------------------------------------------------- /10Signal/3-10_6MySIGCLD: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/10Signal/3-10_6MySIGCLD -------------------------------------------------------------------------------- /10Signal/4-10.7.8.9MySIGALRM: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/10Signal/4-10.7.8.9MySIGALRM -------------------------------------------------------------------------------- /10Signal/5-10_10Myalarm: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/10Signal/5-10_10Myalarm -------------------------------------------------------------------------------- /10Signal/5-10_10Myalarm.c: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | > File Name: 5-10_10Myalarm.c 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Thu 21 Jan 2016 04:45:07 PM CST 6 | ************************************************************************/ 7 | 8 | #include 9 | #include"apue.h" 10 | static void sig_alrm(int signo) 11 | { 12 | // longjmp(env_alrm,1); 13 | } 14 | int main(void) 15 | { 16 | int n; 17 | char line[MAXLINE]; 18 | if(signal(SIGALRM,sig_alrm)==SIG_ERR) 19 | err_sys("signal error"); 20 | alarm(10); 21 | if((n=read(STDIN_FILENO,line,MAXLINE))<0) 22 | err_sys("read error"); 23 | alarm(0); 24 | write(STDOUT_FILENO,line,n); 25 | exit(0); 26 | 27 | } 28 | 29 | -------------------------------------------------------------------------------- /10Signal/6-10MyalarmLongjmp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/10Signal/6-10MyalarmLongjmp -------------------------------------------------------------------------------- /10Signal/7-10.11MySignalSet: 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-------------------------------------------------------------------------------- 1 | ##告诉自己从这里开始更改了系统盘为centos，不在使用unbutu 2 | - 原因是以内unbutu内核有点奇怪，在做信号这章的实验时出现的问题，让人很莫名其妙，在centos，redhat fedroa debin系列的linux系统下运行良好，所以才去centos系统 3 | -------------------------------------------------------------------------------- /10Signal/log: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/10Signal/log -------------------------------------------------------------------------------- /10Signal/temp.foo: -------------------------------------------------------------------------------- 1 | hello,world,right 2 | -------------------------------------------------------------------------------- /11UnixUnitThread/01-11_2MyThreadCreate: -------------------------------------------------------------------------------- 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-------------------------------------------------------------------------------- /13UnixUnitDaemonFork/03-13_7MyDaemonSecond: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/13UnixUnitDaemonFork/03-13_7MyDaemonSecond -------------------------------------------------------------------------------- /13UnixUnitDaemonFork/04-13_8MyPthreadGetSignalConf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/13UnixUnitDaemonFork/04-13_8MyPthreadGetSignalConf -------------------------------------------------------------------------------- /13UnixUnitDaemonFork/05-13_9Mysetckoexec.c: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | > File Name: 05-13_9Mysetckoexec.c 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Mon 22 Feb 2016 01:53:37 AM CST 6 | ************************************************************************/ 7 | 8 | #include "apue.h" 9 | #include 10 | int set_cloexec(int fd) 11 | { 12 | int val; 13 | if((val=fcntl(fd,F_GETFD,0))<0) 14 | return -1; 15 | val |=FD_CLOEXEC; 16 | return(fcntl(fd,F_SETFD,val)); 17 | } 18 | -------------------------------------------------------------------------------- /13UnixUnitDaemonFork/readme.md: -------------------------------------------------------------------------------- 1 | ##对于守护进程 2 | - 其作用就是为系统服务，做守护，单方面讲就是让其成为系统进程，只要系统运行，服务无就会一直开启 3 | 因为守护进程是一直在目录底下运行的 ， 4 | - 其要成为守护进程，必须成为孤儿进程，但是呢，又不会被杀死，工作目录切换到/ 下，去掉终端显示。成为孤傲的守护进程 5 | -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/01-14_1MyNoBlockIo: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/14UnixUnitAdvancedIO/01-14_1MyNoBlockIo -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/01stderr.file: -------------------------------------------------------------------------------- 1 | read 50000 bytes 2 | nwrite=50000,errno=0 3 | fcntl F_SETFL error: Invalid argument 4 | -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/04-14_7MyDiedLock: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/14UnixUnitAdvancedIO/04-14_7MyDiedLock -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/05-14_9Myloocfile.c: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | > File Name: 05-14_9Myloocfile.c 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Sat 30 Jan 2016 04:04:22 PM CST 6 | ************************************************************************/ 7 | 8 | #include "apue.h" 9 | //守护进程可以通过该函书在文件上加锁 10 | //一种简便的方法定义lookfile就是通过write_lock函数定义 11 | //#define lockfile(fd) write_lock ((fd),0,SEEK_SET,0) 12 | 13 | 14 | int lookfile(int fd) 15 | { 16 | struct flock fl; 17 | fl.l_type=F_WRLCK; 18 | fl.l_start=0; 19 | fl.l_whence=SEEK_SET; 20 | fl.l_len=0; 21 | return (fctnl(fd,F_SETCK,&fl)); 22 | } 23 | 24 | -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/06-.lock: -------------------------------------------------------------------------------- 1 | abcdef -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/06-14_12MyConfirmLockSystem: 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06-14_12MyConfirmLockSystem.c 13 | 06-.lock 14 | 07-14_20MyTransFile 15 | 07-14_20MyTransFile.c 16 | 07_testone.md 17 | 07_testtwo.md 18 | templock 19 | _testone.md 20 | -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/07_testtwo.md: -------------------------------------------------------------------------------- 1 | . 2 | .. 3 | 01-14_1ZlAbOybpxVb 4 | 01-14_1ZlAbOybpxVb.p 5 | 01fgqree.svyr 6 | 01grzc.svyr 7 | 0214_5ZlNppEryrnfrYbpx.p 8 | 04-14_7ZlQvrqYbpx 9 | 04-14_7ZlQvrqYbpx.p 10 | 05-14_9Zlybbpsvyr.p 11 | 06-14_12ZlPbasvezYbpxFlfgrz 12 | 06-14_12ZlPbasvezYbpxFlfgrz.p 13 | 06-.ybpx 14 | 07-14_20ZlGenafSvyr 15 | 07-14_20ZlGenafSvyr.p 16 | 07_grfgbar.zq 17 | 07_grfggjb.zq 18 | grzcybpx 19 | _grfgbar.zq 20 | -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/08-14_21MyAsynchronousIO: -------------------------------------------------------------------------------- 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-------------------------------------------------------------------------------- 1 | . 2 | .. 3 | 01-14_1MyNoBlockIo 4 | 01-14_1MyNoBlockIo.c 5 | 01stderr.file 6 | 01temp.file 7 | 0214_5MyAccReleaseLock.c 8 | 04-14_7MyDiedLock 9 | 04-14_7MyDiedLock.c 10 | 05-14_9Myloocfile.c 11 | 06-14_12MyConfirmLockSystem 12 | 06-14_12MyConfirmLockSystem.c 13 | 06-.lock 14 | 07-14_20MyTransFile 15 | 07-14_20MyTransFile.c 16 | 07_testtwo.md 17 | templock 18 | _testone.md 19 | -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/lockfile: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/14UnixUnitAdvancedIO/lockfile -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/readme.md: -------------------------------------------------------------------------------- 1 | ##高级IO 2 | - 本章含有众多概念和函数，我们把它们都统统归类为高级IO。 3 | - 其中包括非阻塞IO、记录锁、IO多路转换就是我们常说的IO多路复用技术的基础 4 | - select和poll函数、异步IO、readv和writev函数以及存储映射IO(mmap). 5 | - 在后续15章和第17章的进程间通信以及以后各章节的实例都要使用本章所描述的概念和函数 6 | 7 | 8 | # 出自APUE第十四章高级IO部分 9 | `let's coding now!!` 10 | -------------------------------------------------------------------------------- /14UnixUnitAdvancedIO/templock: -------------------------------------------------------------------------------- 1 | ab -------------------------------------------------------------------------------- /15UnixUnitIPC/01-15_5MyParent2ChildForkIPC: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/15UnixUnitIPC/01-15_5MyParent2ChildForkIPC -------------------------------------------------------------------------------- /15UnixUnitIPC/01-15_5MyParent2ChildForkIPC.c: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | > File Name: 01-15_5MyParent2ChildForkIPC.c 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Wed 17 Feb 2016 11:15:26 AM CST 6 | ************************************************************************/ 7 | 8 | #include "apue.h" 9 | int main() 10 | { 11 | int n; 12 | int fd[2]; 13 | pid_t pid; 14 | char line[MAXLINE]; 15 | 16 | if(pipe(fd)<0) 17 | err_sys("pipe error"); 18 | if((pid=fork())<0) 19 | err_sys("fork error"); 20 | else if(pid==0) 21 | { 22 | close(fd[1]); 23 | n=read(fd[0],line,MAXLINE); 24 | write(STDOUT_FILENO,line,n); 25 | } 26 | else 27 | { 28 | close(fd[0]); 29 | write(fd[1],"hello world \n",12); 30 | } 31 | exit(0); 32 | } 33 | -------------------------------------------------------------------------------- /15UnixUnitIPC/02-15_6MyPipeDeparPage: -------------------------------------------------------------------------------- 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/************************************************************************* 2 | > File Name: 06-15_14MySimpleCp.c 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Thu 18 Feb 2016 11:48:30 PM CST 6 | ************************************************************************/ 7 | 8 | #include "apue.h" 9 | #include 10 | int main(void) 11 | { 12 | int c; 13 | while((c=getchar())!=EOF) 14 | { 15 | if(isupper(c)) 16 | c=tolower(c); 17 | if(putchar(c)==EOF) 18 | err_sys("output error"); 19 | if(c=='\n') 20 | fflush(stdout);//对于标准输出来讲通常是行缓冲的，而提示并不包含换行符，需要调用fflush 21 | } 22 | exit(0); 23 | } 24 | -------------------------------------------------------------------------------- /15UnixUnitIPC/07-15_15MyExternPopenGetFileToExec: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/15UnixUnitIPC/07-15_15MyExternPopenGetFileToExec -------------------------------------------------------------------------------- /15UnixUnitIPC/08-15_17MyCoprocess: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/15UnixUnitIPC/08-15_17MyCoprocess -------------------------------------------------------------------------------- /15UnixUnitIPC/09-15_18MyCoprocessApplication: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/15UnixUnitIPC/09-15_18MyCoprocessApplication -------------------------------------------------------------------------------- /15UnixUnitIPC/11-15_31MyPrintMemAddr: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/15UnixUnitIPC/11-15_31MyPrintMemAddr 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-------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | > File Name: slock.h 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Sun 21 Feb 2016 04:12:26 PM CST 6 | ************************************************************************/ 7 | 8 | #ifndef _SLOCK_H 9 | #define _SLOCK_H 10 | #include 11 | 12 | 13 | struct slock 14 | { 15 | sem_t *semp; 16 | char name[_POSIX_NAME_MAX]; 17 | }; 18 | #endif 19 | -------------------------------------------------------------------------------- /16UnixUnitInterIPCsocket/01-16_9MyGetaddrinfoHowToUse: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/16UnixUnitInterIPCsocket/01-16_9MyGetaddrinfoHowToUse -------------------------------------------------------------------------------- /16UnixUnitInterIPCsocket/05-16_16MyGetSeverTime: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/16UnixUnitInterIPCsocket/05-16_16MyGetSeverTime -------------------------------------------------------------------------------- /16UnixUnitInterIPCsocket/06-_17MyPostClientTime: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/16UnixUnitInterIPCsocket/06-_17MyPostClientTime -------------------------------------------------------------------------------- /16UnixUnitInterIPCsocket/readme.md: -------------------------------------------------------------------------------- 1 | #网络IPC:套接字 2 | 3 | 4 | - 对于上一张我们学了经典的多进程通信机制IPC:管道 、FIFO有名管道、消息队列、信号量、以及共享存储 5 | - 这些队列允许在同一台计算机上运行的进程可以互相通信。 6 | - 但是在本章 7 | ##Scoket 8 | - 通过网络连接来使得不同计算机上的进程相互通信。网络进程间通信(Network IPC).一个拉风的名字 9 | - 在本章中，我们将描述桃姐在网络进程件通信接口，进程用该接口能够和其他进程通信，无论他们是在同一计算机内，还是在不同的计算机上。 10 | - 实际上这就是网络套接字的设计目标之一，同样的接口既可以用于计算机间通信。也可以用于计算机内通信。 11 | - 尽管套接字接口可以采用不同的网络协议进行通信，但本章的讨论限制在因特网事实上的通信标准。TCP/IP协议栈。 12 | 13 | -------------------------------------------------------------------------------- /GetEnv: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/GetEnv -------------------------------------------------------------------------------- /GetEnv.cpp: -------------------------------------------------------------------------------- 1 | #include 2 | using namespace std; 3 | int main(int argc,char **argv,char **env) 4 | { 5 | while(env&&*env) 6 | { 7 | cout<<*env< 2 | #include 3 | #include 4 | using namespace std; 5 | int main() 6 | { 7 | char *env="USER_HOME"; 8 | putenv("USER_HOME=/user/root"); 9 | char *a=getenv(env); 10 | if(a!=NULL) 11 | cout<<"env :"< 2 | #include"apue.h" 3 | //#include 4 | //#include 5 | //#include 6 | #include 7 | //#include//这个文件不可用 8 | int main(int argc,char **argv) 9 | { 10 | DIR *dp; 11 | struct dirent *dirp; 12 | if(argc!=2) 13 | err_quit("usage:ls directory_name"); 14 | // printf("error"); 15 | if((dp=opendir(argv[1]))==NULL) 16 | err_sys("can't open %s",argv[1]); 17 | // printf("can't open %s",argv[1]); 18 | while((dirp=readdir(dp))!=NULL) 19 | printf("%s\n",dirp->d_name); 20 | closedir(dp); 21 | exit(0); 22 | 23 | 24 | } 25 | -------------------------------------------------------------------------------- /UnixUnit01/Dirls.o: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnit01/Dirls.o -------------------------------------------------------------------------------- /UnixUnit01/MyCopy.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int main(int argc,char **argv) 3 | { 4 | int c; 5 | while((c=getc(stdin))!=EOF) 6 | { 7 | if(putc(c,stdout)==EOF) 8 | err_sys("output error"); 9 | } 10 | if(ferror(stdin)) 11 | err_sys("input error"); 12 | 13 | 14 | 15 | exit(0); 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | return 0; 37 | } 38 | -------------------------------------------------------------------------------- /UnixUnit01/MyCopy.o: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnit01/MyCopy.o -------------------------------------------------------------------------------- /UnixUnit01/MyPrintuserid.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | int main(void) 3 | { 4 | printf("uid=%d gid=%d \n",getuid(),getgid()); 5 | exit(0); 6 | 7 | } 8 | -------------------------------------------------------------------------------- /UnixUnit01/MyPrintuserid.o: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnit01/MyPrintuserid.o -------------------------------------------------------------------------------- /UnixUnit01/MyShell.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | int main(int argc,char **argv) 4 | { 5 | char buf[MAXLINE];// from apue.h referrnce 6 | pid_t pid; 7 | int status; 8 | printf("%%"); 9 | while(fgets(buf,MAXLINE,stdin)!=NULL) 10 | { 11 | if((buf[strlen(buf)-1])=='\n') 12 | buf[strlen(buf)-1]=0;//relplace newline with null; 13 | if ( (pid = fork() ) < 0) 14 | { 15 | err_sys("fork error"); 16 | } 17 | else if(pid==0) 18 | { 19 | execlp(buf,buf, (char*)0); 20 | err_ret("couldn't execute :%s ",buf); 21 | exit(127); 22 | } 23 | 24 | 25 | if((pid=waitpid(pid,&status,0))<0) 26 | err_sys("waitpaid error"); 27 | printf("%%"); 28 | } 29 | exit(0); 30 | } 31 | -------------------------------------------------------------------------------- /UnixUnit01/MyShell.o: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnit01/MyShell.o -------------------------------------------------------------------------------- /UnixUnit01/MyShell01singal.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | static void sig_int(int signo); 4 | int main(int argc,char **argv) 5 | { 6 | char buf[MAXLINE];// from apue.h referrnce 7 | pid_t pid; 8 | int status; 9 | if(signal(SIGINT,sig_int)==SIG_ERR) 10 | err_sys("singal error"); 11 | printf("%%"); 12 | while(fgets(buf,MAXLINE,stdin)!=NULL) 13 | { 14 | if((buf[strlen(buf)-1])=='\n') 15 | buf[strlen(buf)-1]=0;//relplace newline with null; 16 | if ( (pid = fork() ) < 0) 17 | { 18 | err_sys("fork error"); 19 | } 20 | else if(pid==0) 21 | { 22 | execlp(buf,buf, (char*)0); 23 | err_ret("couldn't execute :%s ",buf); 24 | exit(127); 25 | } 26 | 27 | 28 | if((pid=waitpid(pid,&status,0))<0) 29 | err_sys("waitpaid error"); 30 | printf("%%"); 31 | } 32 | exit(0); 33 | } 34 | 35 | 36 | void sig_int(int signo) 37 | { 38 | printf("interrupt\n%%"); 39 | } 40 | -------------------------------------------------------------------------------- /UnixUnit01/MyShell01singal.o: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnit01/MyShell01singal.o -------------------------------------------------------------------------------- /UnixUnit01/Myerror.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | int main (int argc,char ** argv) 4 | { 5 | fprintf(stderr,"EACCESS :%s\n",strerror(EACCES)); 6 | errno=ENOENT; 7 | perror(argv[0]); 8 | exit(0); 9 | } 10 | -------------------------------------------------------------------------------- /UnixUnit01/Myerror.o: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnit01/Myerror.o -------------------------------------------------------------------------------- /UnixUnit01/Myfock.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | int main(int argc,char ** argv) 3 | { 4 | printf("hello world from process Id %ld\n",(long)getpid()); 5 | exit(0); 6 | 7 | } 8 | -------------------------------------------------------------------------------- /UnixUnit01/Myfork.o: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnit01/Myfork.o -------------------------------------------------------------------------------- /UnixUnit01/Myio.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #define BUFFSIZE 4096 3 | int main(void) 4 | { 5 | int n; 6 | char buf[BUFFSIZE]; 7 | while((n=read(STDIN_FILENO,buf,BUFFSIZE))>0) 8 | { 9 | if(write(STDOUT_FILENO,buf,n)!=n) 10 | err_sys("write error"); 11 | } 12 | if(n<0) 13 | err_sys("read error"); 14 | exit(0); 15 | } 16 | -------------------------------------------------------------------------------- /UnixUnit01/Myio.data: -------------------------------------------------------------------------------- 1 | sad 2 | asda 3 | ds 4 | ad 5 | a 6 | d 7 | -------------------------------------------------------------------------------- /UnixUnit01/Myio.o: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnit01/Myio.o -------------------------------------------------------------------------------- /UnixUnit01/Test*++.c: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | > File Name: Test*++.c 3 | > Author:Victor Qi 4 | > Mail:Victor_QiGetFuture@163.com 5 | > Created Time: Wed 02 Mar 2016 01:00:43 AM CST 6 | ************************************************************************/ 7 | #include 8 | int main(void) 9 | { 10 | char *ptr="Linux"; 11 | printf("%c",*ptr++); 12 | printf("%c",*ptr); 13 | return 0; 14 | } 15 | -------------------------------------------------------------------------------- /UnixUnitIO03/MyCreatemptyio: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO03/MyCreatemptyio -------------------------------------------------------------------------------- /UnixUnitIO03/MyCreatemptyio.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | char buf1[]="qwertyuiop"; 4 | char buf2[]="QWERTYUIOP"; 5 | int main(void) 6 | { 7 | int fd; 8 | if((fd=creat("myfile.txt",FILE_MODE))<0) 9 | err_sys("creat error"); 10 | if(write(fd,buf1,10)!=10) 11 | err_sys("write error"); 12 | if(lseek(fd,16384,SEEK_SET)==-1) 13 | err_sys("lseek error"); 14 | if(write (fd ,buf2,10)!=10) 15 | err_sys("write error"); 16 | 17 | 18 | 19 | 20 | //创建一个空洞文件，空洞文件是多线程的支持点之一，因为空洞文件的存在才能支持多线程断点续传 21 | 22 | 23 | exit(0); 24 | 25 | 26 | 27 | 28 | 29 | 30 | } 31 | -------------------------------------------------------------------------------- /UnixUnitIO03/MyCreatio.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include"fcntl.h" 3 | int main(int argc,char ** argv) 4 | { 5 | FILE *fp="./Mycreat.txt" 6 | creat(fp,"w+"); 7 | 8 | 9 | 10 | return 0; 11 | } 12 | -------------------------------------------------------------------------------- /UnixUnitIO03/MyEffectio: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO03/MyEffectio -------------------------------------------------------------------------------- /UnixUnitIO03/MyEffectio.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #define BUFFSIZE 4096 3 | int main(void) 4 | { 5 | int n; 6 | char buff[BUFFSIZE]; 7 | while((n=read(STDIN_FILENO,buff,BUFFSIZE))>0) 8 | { 9 | if(write(STDOUT_FILENO,buff,n)!=n) 10 | err_sys("write error"); 11 | } 12 | if(n<0) 13 | err_sys("read error"); 14 | exit(0); 15 | } 16 | -------------------------------------------------------------------------------- /UnixUnitIO03/MyFileioAnnoce: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO03/MyFileioAnnoce -------------------------------------------------------------------------------- /UnixUnitIO03/MyStdio: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO03/MyStdio -------------------------------------------------------------------------------- /UnixUnitIO03/MyStdio.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | int main (void) 4 | { 5 | putchar('a'); 6 | write(1, "b", 1); 7 | putchar('a'); 8 | write(1, "b", 1); 9 | putchar('a'); 10 | write(1, "b", 1); 11 | printf("\n"); 12 | return 0; 13 | } 14 | //window 下生成ababab 15 | //linux下是bbbaaa 16 | -------------------------------------------------------------------------------- /UnixUnitIO03/Myoffsetio: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO03/Myoffsetio -------------------------------------------------------------------------------- /UnixUnitIO03/Myoffsetio.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | int main(void) 4 | { 5 | if(lseek(STDIN_FILENO,0,SEEK_CUR)==-1) 6 | printf("cannot seek\n"); 7 | else 8 | printf("seek ok\n"); 9 | exit(0); 10 | 11 | 12 | } 13 | -------------------------------------------------------------------------------- /UnixUnitIO03/file: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO03/file -------------------------------------------------------------------------------- /UnixUnitIO04/10Mydev: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO04/10Mydev -------------------------------------------------------------------------------- /UnixUnitIO04/10Mydev.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #ifdef SOLARIS 3 | #include 4 | #endif 5 | #include 6 | int main(int argc,char **argv) 7 | { 8 | int i; 9 | struct stat buf; 10 | for(i =1;i 3 | int main(int argc, char ** argv) 4 | { 5 | if(argc!=2) 6 | err_quit("\tusage:%s ",argv[0]); 7 | if(access(argv[1],R_OK)<0) 8 | err_ret("\taccess error for %s",argv[1]); 9 | else 10 | printf(" \tread access OK\n"); 11 | if(open(argv[1],O_RDONLY)<0) 12 | err_ret("\topen error for %s",argv[1]); 13 | else 14 | printf("\topen for reading OK \n"); 15 | exit(0); 16 | } 17 | -------------------------------------------------------------------------------- /UnixUnitIO04/Mychdir08: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO04/Mychdir08 -------------------------------------------------------------------------------- /UnixUnitIO04/Mychdir08.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | int main(void) 4 | { 5 | if(chdir("/tmp")<0) 6 | err_sys("chdir error"); 7 | printf("chdir to /tmp successed\n"); 8 | exit(0); 9 | 10 | 11 | 12 | 13 | 14 | } 15 | -------------------------------------------------------------------------------- /UnixUnitIO04/Mychmodio: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO04/Mychmodio -------------------------------------------------------------------------------- /UnixUnitIO04/Mychmodio.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | 3 | 4 | int main(int argc , char** argv) 5 | { 6 | struct stat buf; 7 | if(stat("foo",&buf)<0) 8 | err_sys("stat error for foo"); 9 | if(chmod("foo",(buf.st_mode & ~S_IXGRP)|S_ISGID)<0) 10 | err_sys("chmod error for foo"); 11 | 12 | 13 | if(chmod("bar",S_IRUSR|S_IWUSR|S_IRWXG)<0) 14 | err_sys("chmod error for bar"); 15 | 16 | exit(0); 17 | 18 | } 19 | -------------------------------------------------------------------------------- /UnixUnitIO04/Myfutimes: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO04/Myfutimes -------------------------------------------------------------------------------- /UnixUnitIO04/Myfutimes.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | int main(int argc,char **argv) 4 | { 5 | int i,fd; 6 | struct stat buf; 7 | struct timespec times[2]; 8 | for(i=1;i 3 | int main(int argc ,char **argv) 4 | { 5 | if(open("tempfile",O_RDWR)<0) 6 | err_sys("open tempfile file faied"); 7 | if(unlink("tempfile")<0) 8 | err_sys("unlink error"); 9 | printf("file unlinked \n"); 10 | sleep(10); 11 | printf("done\n"); 12 | exit(0); 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | } 21 | 22 | -------------------------------------------------------------------------------- /UnixUnitIO04/Myumask: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO04/Myumask -------------------------------------------------------------------------------- /UnixUnitIO04/Myumask.c: -------------------------------------------------------------------------------- 1 | #include"apue.h" 2 | #include 3 | #define RWRWRW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 4 | int main(int argc , char ** argv) 5 | { 6 | umask(0); 7 | if(creat("foo",RWRWRW)<0) 8 | err_sys("creat error for foo"); 9 | umask(S_IRUSR|S_IWUSR|S_IXUSR|S_IROTH|S_IWOTH); 10 | if(creat("bar",RWRWRW)<0) 11 | err_sys("create error for bar"); 12 | exit(0); 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | } 23 | -------------------------------------------------------------------------------- /UnixUnitIO04/bar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO04/bar -------------------------------------------------------------------------------- /UnixUnitIO04/foo: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO04/foo -------------------------------------------------------------------------------- /UnixUnitIO04/testln/a: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/UnixUnitIO04/testln/a -------------------------------------------------------------------------------- /UnixUnitIO04/testln/testdir: -------------------------------------------------------------------------------- 1 | testln/ -------------------------------------------------------------------------------- /apue.3e/DISCLAIMER: -------------------------------------------------------------------------------- 1 | LIMITS OF LIABILITY AND DISCLAIMER OF WARRANTY 2 | 3 | The author and publisher of the book "Advanced Programming in the 4 | Unix Environment" have used their best efforts in preparing this 5 | software. These efforts include the development, research, and 6 | testing of the theories and programs to determine their effectiveness. 7 | The author and publisher make no warranty of any kind, express or 8 | implied, with regard to these programs or the documentation contained 9 | in the book. The author and publisher shall not be liable in any event 10 | for incidental or consequential damages in connection with, or arising 11 | out of, the furnishing, performance, or use of these programs. 12 | -------------------------------------------------------------------------------- /apue.3e/Make.defines.freebsd: -------------------------------------------------------------------------------- 1 | # Common make definitions, customized for each platform 2 | 3 | # Definitions required in all program directories to compile and link 4 | # C programs using gcc. 5 | 6 | CC=gcc 7 | COMPILE.c=$(CC) $(CFLAGS) $(CPPFLAGS) -c 8 | LINK.c=$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) 9 | LDFLAGS= 10 | LDDIR=-L$(ROOT)/lib 11 | LDLIBS=$(LDDIR) -lapue $(EXTRALIBS) 12 | CFLAGS=-ansi -I$(ROOT)/include -Wall -DBSD -D__BSD_VISIBLE $(EXTRA) 13 | RANLIB=ranlib 14 | AR=ar 15 | AWK=awk 16 | LIBAPUE=$(ROOT)/lib/libapue.a 17 | 18 | # Common temp files to delete from each directory. 19 | TEMPFILES=core core.* *.o temp.* *.out 20 | -------------------------------------------------------------------------------- /apue.3e/Make.defines.linux: -------------------------------------------------------------------------------- 1 | # Common make definitions, customized for each platform 2 | 3 | # Definitions required in all program directories to compile and link 4 | # C programs using gcc. 5 | 6 | CC=gcc 7 | COMPILE.c=$(CC) $(CFLAGS) $(CPPFLAGS) -c 8 | LINK.c=$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) 9 | LDFLAGS= 10 | LDDIR=-L$(ROOT)/lib 11 | LDLIBS=$(LDDIR) -lapue $(EXTRALIBS) 12 | CFLAGS=-ansi -I$(ROOT)/include -Wall -DLINUX -D_GNU_SOURCE $(EXTRA) 13 | RANLIB=echo 14 | AR=ar 15 | AWK=awk 16 | LIBAPUE=$(ROOT)/lib/libapue.a 17 | 18 | # Common temp files to delete from each directory. 19 | TEMPFILES=core core.* *.o temp.* *.out 20 | -------------------------------------------------------------------------------- /apue.3e/Make.defines.macos: -------------------------------------------------------------------------------- 1 | # Common make definitions, customized for each platform 2 | 3 | # Definitions required in all program directories to compile and link 4 | # C programs using gcc. 5 | 6 | CC=gcc 7 | COMPILE.c=$(CC) $(CFLAGS) $(CPPFLAGS) -c 8 | LINK.c=$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) 9 | LDFLAGS= 10 | LDDIR=-L$(ROOT)/lib 11 | LDLIBS=$(LDDIR) -lapue $(EXTRALIBS) 12 | CFLAGS=-ansi -I$(ROOT)/include -Wall -DMACOS -D_DARWIN_C_SOURCE $(EXTRA) 13 | RANLIB=ranlib 14 | AR=ar 15 | AWK=awk 16 | LIBAPUE=$(ROOT)/lib/libapue.a 17 | 18 | # Common temp files to delete from each directory. 19 | TEMPFILES=core core.* *.o temp.* *.out 20 | -------------------------------------------------------------------------------- /apue.3e/Make.defines.solaris: -------------------------------------------------------------------------------- 1 | # Common make definitions, customized for each platform 2 | 3 | # Definitions required in all program directories to compile and link 4 | # C programs using gcc. 5 | 6 | CC=gcc 7 | COMPILE.c=$(CC) $(CFLAGS) $(CPPFLAGS) -c 8 | LINK.c=$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) 9 | LDFLAGS= 10 | LDDIR=-L$(ROOT)/lib 11 | LDLIBS=$(LDDIR) -lapue $(EXTRALIBS) 12 | CFLAGS=-std=c99 -m64 -I$(ROOT)/include -Wall -DSOLARIS -D__EXTENSIONS__ $(EXTRA) 13 | RANLIB=echo 14 | AR=ar 15 | AWK=nawk 16 | LIBAPUE=$(ROOT)/lib/libapue.a 17 | NAMEMAX=-DNAME_MAX=_XOPEN_NAME_MAX 18 | 19 | # Common temp files to delete from each directory. 20 | TEMPFILES=core core.* *.o temp.* *.out 21 | -------------------------------------------------------------------------------- /apue.3e/Make.libapue.inc: -------------------------------------------------------------------------------- 1 | $(LIBAPUE): 2 | (cd $(ROOT)/lib && $(MAKE)) 3 | -------------------------------------------------------------------------------- /apue.3e/Makefile: -------------------------------------------------------------------------------- 1 | DIRS = lib intro sockets advio daemons datafiles db environ \ 2 | fileio filedir ipc1 ipc2 proc pty relation signals standards \ 3 | stdio termios threadctl threads printer exercises 4 | 5 | all: 6 | for i in $(DIRS); do \ 7 | (cd $$i && echo "making $$i" && $(MAKE) ) || exit 1; \ 8 | done 9 | 10 | clean: 11 | for i in $(DIRS); do \ 12 | (cd $$i && echo "cleaning $$i" && $(MAKE) clean) || exit 1; \ 13 | done 14 | -------------------------------------------------------------------------------- /apue.3e/README: -------------------------------------------------------------------------------- 1 | Read the file called DISCLAIMER. 2 | 3 | On Freebsd, type "gmake". 4 | On other platforms, type "make" (as long as this is gnu make). 5 | 6 | For FAQs, updated source code, and the lost chapter, see http://www.apuebook.com. 7 | Please direct questions, suggestions, and bug reports to sar@apuebook.com. 8 | 9 | Steve Rago 10 | January 2013 11 | -------------------------------------------------------------------------------- /apue.3e/advio/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "linux" 6 | EXTRALIBS=-lrt 7 | endif 8 | ifeq "$(PLATFORM)" "solaris" 9 | EXTRALIBS=-lrt 10 | endif 11 | 12 | PROGS = deadlock mandatory mcopy2 nonblockw rot13a 13 | MOREPROGS = rot13c2 14 | 15 | all: $(PROGS) $(MOREPROGS) lockfile.o 16 | 17 | rot13c2.c: rot13c2.c.in $(LIBAPUE) 18 | ./fixup.awk rot13a.c >xlate 19 | sed '/same/q' rot13c2.c.in >rot13c2.c 20 | cat xlate >>rot13c2.c 21 | sed '1,/same/d' rot13c2.c.in >>rot13c2.c 22 | 23 | %: %.c $(LIBAPUE) 24 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 25 | 26 | clean: 27 | rm -f $(PROGS) $(MOREPROGS) $(TEMPFILES) *.o xlate rot13c2.c 28 | 29 | include $(ROOT)/Make.libapue.inc 30 | -------------------------------------------------------------------------------- /apue.3e/advio/fixup.awk: -------------------------------------------------------------------------------- 1 | #!/usr/bin/awk -f 2 | BEGIN { 3 | ready = 0 4 | } 5 | /^translate/ { 6 | ready = 1 7 | next 8 | } 9 | /^{/ { 10 | next 11 | } 12 | /^}/ { 13 | ready = 0 14 | next 15 | } 16 | { 17 | if (ready) 18 | print $0 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/advio/lockfile.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | int 5 | lockfile(int fd) 6 | { 7 | struct flock fl; 8 | 9 | fl.l_type = F_WRLCK; 10 | fl.l_start = 0; 11 | fl.l_whence = SEEK_SET; 12 | fl.l_len = 0; 13 | return(fcntl(fd, F_SETLK, &fl)); 14 | } 15 | -------------------------------------------------------------------------------- /apue.3e/advio/nonblockw.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | #include 4 | 5 | char buf[500000]; 6 | 7 | int 8 | main(void) 9 | { 10 | int ntowrite, nwrite; 11 | char *ptr; 12 | 13 | ntowrite = read(STDIN_FILENO, buf, sizeof(buf)); 14 | fprintf(stderr, "read %d bytes\n", ntowrite); 15 | 16 | set_fl(STDOUT_FILENO, O_NONBLOCK); /* set nonblocking */ 17 | 18 | ptr = buf; 19 | while (ntowrite > 0) { 20 | errno = 0; 21 | nwrite = write(STDOUT_FILENO, ptr, ntowrite); 22 | fprintf(stderr, "nwrite = %d, errno = %d\n", nwrite, errno); 23 | 24 | if (nwrite > 0) { 25 | ptr += nwrite; 26 | ntowrite -= nwrite; 27 | } 28 | } 29 | 30 | clr_fl(STDOUT_FILENO, O_NONBLOCK); /* clear nonblocking */ 31 | 32 | exit(0); 33 | } 34 | -------------------------------------------------------------------------------- /apue.3e/advio/readn.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | ssize_t /* Read "n" bytes from a descriptor */ 4 | readn(int fd, void *ptr, size_t n) 5 | { 6 | size_t nleft; 7 | ssize_t nread; 8 | 9 | nleft = n; 10 | while (nleft > 0) { 11 | if ((nread = read(fd, ptr, nleft)) < 0) { 12 | if (nleft == n) 13 | return(-1); /* error, return -1 */ 14 | else 15 | break; /* error, return amount read so far */ 16 | } else if (nread == 0) { 17 | break; /* EOF */ 18 | } 19 | nleft -= nread; 20 | ptr += nread; 21 | } 22 | return(n - nleft); /* return >= 0 */ 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/advio/writen.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | ssize_t /* Write "n" bytes to a descriptor */ 4 | writen(int fd, const void *ptr, size_t n) 5 | { 6 | size_t nleft; 7 | ssize_t nwritten; 8 | 9 | nleft = n; 10 | while (nleft > 0) { 11 | if ((nwritten = write(fd, ptr, nleft)) < 0) { 12 | if (nleft == n) 13 | return(-1); /* error, return -1 */ 14 | else 15 | break; /* error, return amount written so far */ 16 | } else if (nwritten == 0) { 17 | break; 18 | } 19 | nleft -= nwritten; 20 | ptr += nwritten; 21 | } 22 | return(n - nleft); /* return >= 0 */ 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/daemons/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | all: init.o reread.o reread2.o single.o 6 | 7 | clean: 8 | rm -f $(TEMPFILES) *.o 9 | -------------------------------------------------------------------------------- /apue.3e/datafiles/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | PROGS = strftime 6 | 7 | all: $(PROGS) getpwnam.o 8 | 9 | %: %.c $(LIBAPUE) 10 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 11 | 12 | clean: 13 | rm -f $(PROGS) $(TEMPFILES) *.o 14 | 15 | include $(ROOT)/Make.libapue.inc 16 | -------------------------------------------------------------------------------- /apue.3e/datafiles/getpwnam.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | struct passwd * 6 | getpwnam(const char *name) 7 | { 8 | struct passwd *ptr; 9 | 10 | setpwent(); 11 | while ((ptr = getpwent()) != NULL) 12 | if (strcmp(name, ptr->pw_name) == 0) 13 | break; /* found a match */ 14 | endpwent(); 15 | return(ptr); /* ptr is NULL if no match found */ 16 | } 17 | -------------------------------------------------------------------------------- /apue.3e/datafiles/strftime.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | int 6 | main(void) 7 | { 8 | time_t t; 9 | struct tm *tmp; 10 | char buf1[16]; 11 | char buf2[64]; 12 | 13 | time(&t); 14 | tmp = localtime(&t); 15 | if (strftime(buf1, 16, "time and date: %r, %a %b %d, %Y", tmp) == 0) 16 | printf("buffer length 16 is too small\n"); 17 | else 18 | printf("%s\n", buf1); 19 | if (strftime(buf2, 64, "time and date: %r, %a %b %d, %Y", tmp) == 0) 20 | printf("buffer length 64 is too small\n"); 21 | else 22 | printf("%s\n", buf2); 23 | exit(0); 24 | } 25 | -------------------------------------------------------------------------------- /apue.3e/db/t4.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include "apue_db.h" 3 | #include 4 | 5 | int 6 | main(void) 7 | { 8 | DBHANDLE db; 9 | 10 | if ((db = db_open("db4", O_RDWR | O_CREAT | O_TRUNC, 11 | FILE_MODE)) == NULL) 12 | err_sys("db_open error"); 13 | 14 | if (db_store(db, "Alpha", "data1", DB_INSERT) != 0) 15 | err_quit("db_store error for alpha"); 16 | if (db_store(db, "beta", "Data for beta", DB_INSERT) != 0) 17 | err_quit("db_store error for beta"); 18 | if (db_store(db, "gamma", "record3", DB_INSERT) != 0) 19 | err_quit("db_store error for gamma"); 20 | 21 | db_close(db); 22 | exit(0); 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/environ/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | PROGS = doatexit echoarg getrlimit hello1 testjmp 6 | 7 | all: $(PROGS) opendata.o scope.o 8 | 9 | %: %.c $(LIBAPUE) 10 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 11 | 12 | clean: 13 | rm -f $(PROGS) $(TEMPFILES) *.o 14 | 15 | include $(ROOT)/Make.libapue.inc 16 | -------------------------------------------------------------------------------- /apue.3e/environ/cmd1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | #define TOK_ADD 5 4 | 5 | void do_line(char *); 6 | void cmd_add(void); 7 | int get_token(void); 8 | 9 | int 10 | main(void) 11 | { 12 | char line[MAXLINE]; 13 | 14 | while (fgets(line, MAXLINE, stdin) != NULL) 15 | do_line(line); 16 | exit(0); 17 | } 18 | 19 | char *tok_ptr; /* global pointer for get_token() */ 20 | 21 | void 22 | do_line(char *ptr) /* process one line of input */ 23 | { 24 | int cmd; 25 | 26 | tok_ptr = ptr; 27 | while ((cmd = get_token()) > 0) { 28 | switch (cmd) { /* one case for each command */ 29 | case TOK_ADD: 30 | cmd_add(); 31 | break; 32 | } 33 | } 34 | } 35 | 36 | void 37 | cmd_add(void) 38 | { 39 | int token; 40 | 41 | token = get_token(); 42 | /* rest of processing for this command */ 43 | } 44 | 45 | int 46 | get_token(void) 47 | { 48 | /* fetch next token from line pointed to by tok_ptr */ 49 | } 50 | -------------------------------------------------------------------------------- /apue.3e/environ/cmd2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define TOK_ADD 5 5 | 6 | jmp_buf jmpbuffer; 7 | 8 | int 9 | main(void) 10 | { 11 | char line[MAXLINE]; 12 | 13 | if (setjmp(jmpbuffer) != 0) 14 | printf("error"); 15 | while (fgets(line, MAXLINE, stdin) != NULL) 16 | do_line(line); 17 | exit(0); 18 | } 19 | 20 | . . . 21 | 22 | void 23 | cmd_add(void) 24 | { 25 | int token; 26 | 27 | token = get_token(); 28 | if (token < 0) /* an error has occurred */ 29 | longjmp(jmpbuffer, 1); 30 | /* rest of processing for this command */ 31 | } 32 | -------------------------------------------------------------------------------- /apue.3e/environ/doatexit.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | static void my_exit1(void); 4 | static void my_exit2(void); 5 | 6 | int 7 | main(void) 8 | { 9 | if (atexit(my_exit2) != 0) 10 | err_sys("can't register my_exit2"); 11 | 12 | if (atexit(my_exit1) != 0) 13 | err_sys("can't register my_exit1"); 14 | if (atexit(my_exit1) != 0) 15 | err_sys("can't register my_exit1"); 16 | 17 | printf("main is done\n"); 18 | return(0); 19 | } 20 | 21 | static void 22 | my_exit1(void) 23 | { 24 | printf("first exit handler\n"); 25 | } 26 | 27 | static void 28 | my_exit2(void) 29 | { 30 | printf("second exit handler\n"); 31 | } 32 | -------------------------------------------------------------------------------- /apue.3e/environ/echoarg.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(int argc, char *argv[]) 5 | { 6 | int i; 7 | 8 | for (i = 0; i < argc; i++) /* echo all command-line args */ 9 | printf("argv[%d]: %s\n", i, argv[i]); 10 | exit(0); 11 | } 12 | -------------------------------------------------------------------------------- /apue.3e/environ/hello1.c: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | main() 4 | { 5 | printf("hello, world\n"); 6 | } 7 | -------------------------------------------------------------------------------- /apue.3e/environ/opendata.c: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | FILE * 4 | open_data(void) 5 | { 6 | FILE *fp; 7 | char databuf[BUFSIZ]; /* setvbuf makes this the stdio buffer */ 8 | 9 | if ((fp = fopen("datafile", "r")) == NULL) 10 | return(NULL); 11 | if (setvbuf(fp, databuf, _IOLBF, BUFSIZ) != 0) 12 | return(NULL); 13 | return(fp); /* error */ 14 | } 15 | -------------------------------------------------------------------------------- /apue.3e/environ/scope.c: -------------------------------------------------------------------------------- 1 | int 2 | f1(int val) 3 | { 4 | int num = 0; 5 | int *ptr = # 6 | 7 | if (val == 0) { 8 | int val; 9 | 10 | val = 5; 11 | ptr = &val; 12 | } 13 | return(*ptr + 1); 14 | } 15 | -------------------------------------------------------------------------------- /apue.3e/exercises/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "freebsd" 6 | GETPW = getpw44bsd 7 | FMEM = fmemopen.o 8 | EXTRALIBS=-pthread 9 | endif 10 | ifeq "$(PLATFORM)" "linux" 11 | GETPW = getpwsvr4 12 | FMEM = 13 | EXTRALIBS=-pthread 14 | endif 15 | ifeq "$(PLATFORM)" "macos" 16 | GETPW = getpw44bsd 17 | FMEM = fmemopen.o 18 | endif 19 | ifeq "$(PLATFORM)" "solaris" 20 | GETPW = getpwsvr4 21 | FMEM = 22 | endif 23 | 24 | PROGS = bo fifo1 getlogin goodexit longpath pendlock prtime sizepipe vfork3 zombie 25 | 26 | all: $(PROGS) asyncsocket.o $(FMEM) openmax.o sleep.o sleepus_poll.o sleepus_select.o $(GETPW) 27 | 28 | %: %.c $(LIBAPUE) 29 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 30 | 31 | clean: 32 | rm -f $(PROGS) $(TEMPFILES) *.o $(GETPW) 33 | 34 | include $(ROOT)/Make.libapue.inc 35 | -------------------------------------------------------------------------------- /apue.3e/exercises/asyncsocket.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | #include 4 | #include 5 | #include 6 | #if defined(BSD) || defined(MACOS) || defined(SOLARIS) 7 | #include 8 | #endif 9 | 10 | int 11 | setasync(int sockfd) 12 | { 13 | int n; 14 | 15 | if (fcntl(sockfd, F_SETOWN, getpid()) < 0) 16 | return(-1); 17 | n = 1; 18 | if (ioctl(sockfd, FIOASYNC, &n) < 0) 19 | return(-1); 20 | return(0); 21 | } 22 | 23 | int 24 | clrasync(int sockfd) 25 | { 26 | int n; 27 | 28 | n = 0; 29 | if (ioctl(sockfd, FIOASYNC, &n) < 0) 30 | return(-1); 31 | return(0); 32 | } 33 | -------------------------------------------------------------------------------- /apue.3e/exercises/bo.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | int 6 | main(void) 7 | { 8 | uint32_t i = 0x04030201; 9 | unsigned char *cp = (unsigned char *)&i; 10 | 11 | if (*cp == 1) 12 | printf("little-endian\n"); 13 | else if (*cp == 4) 14 | printf("big-endian\n"); 15 | else 16 | printf("who knows?\n"); 17 | exit(0); 18 | } 19 | -------------------------------------------------------------------------------- /apue.3e/exercises/fifo1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define FIFO "temp.fifo" 5 | 6 | int 7 | main(void) 8 | { 9 | int fdread, fdwrite; 10 | 11 | unlink(FIFO); 12 | if (mkfifo(FIFO, FILE_MODE) < 0) 13 | err_sys("mkfifo error"); 14 | if ((fdread = open(FIFO, O_RDONLY | O_NONBLOCK)) < 0) 15 | err_sys("open error for reading"); 16 | if ((fdwrite = open(FIFO, O_WRONLY)) < 0) 17 | err_sys("open error for writing"); 18 | clr_fl(fdread, O_NONBLOCK); 19 | exit(0); 20 | } 21 | -------------------------------------------------------------------------------- /apue.3e/exercises/getlogin.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | FILE *fp; 7 | char *p; 8 | 9 | daemonize("getlog"); 10 | p = getlogin(); 11 | fp = fopen("/tmp/getlog.out", "w"); 12 | if (fp != NULL) { 13 | if (p == NULL) 14 | fprintf(fp, "no login name\n"); 15 | else 16 | fprintf(fp, "login name: %s\n", p); 17 | } 18 | exit(0); 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/exercises/getpw44bsd.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) /* FreeBSD/Mac OS X version */ 6 | { 7 | struct passwd *ptr; 8 | 9 | if ((ptr = getpwnam("sar")) == NULL) 10 | err_sys("getpwnam error"); 11 | printf("pw_passwd = %s\n", ptr->pw_passwd == NULL || 12 | ptr->pw_passwd[0] == 0 ? "(null)" : ptr->pw_passwd); 13 | exit(0); 14 | } 15 | -------------------------------------------------------------------------------- /apue.3e/exercises/getpwsvr4.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) /* Linux/Solaris version */ 6 | { 7 | struct spwd *ptr; 8 | 9 | if ((ptr = getspnam("sar")) == NULL) 10 | err_sys("getspnam error"); 11 | printf("sp_pwdp = %s\n", ptr->sp_pwdp == NULL || 12 | ptr->sp_pwdp[0] == 0 ? "(null)" : ptr->sp_pwdp); 13 | exit(0); 14 | } 15 | -------------------------------------------------------------------------------- /apue.3e/exercises/openmax.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | #include 4 | 5 | #define OPEN_MAX_GUESS 256 6 | 7 | long 8 | open_max(void) 9 | { 10 | long openmax; 11 | struct rlimit rl; 12 | 13 | if ((openmax = sysconf(_SC_OPEN_MAX)) < 0 || 14 | openmax == LONG_MAX) { 15 | if (getrlimit(RLIMIT_NOFILE, &rl) < 0) 16 | err_sys("can't get file limit"); 17 | if (rl.rlim_max == RLIM_INFINITY) 18 | openmax = OPEN_MAX_GUESS; 19 | else 20 | openmax = rl.rlim_max; 21 | } 22 | return(openmax); 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/exercises/prtime.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | time_t caltime; 8 | struct tm *tm; 9 | char line[MAXLINE]; 10 | 11 | if ((caltime = time(NULL)) == -1) 12 | err_sys("time error"); 13 | if ((tm = localtime(&caltime)) == NULL) 14 | err_sys("localtime error"); 15 | if (strftime(line, MAXLINE, "%a %b %d %X %Z %Y\n", tm) == 0) 16 | err_sys("strftime error"); 17 | fputs(line, stdout); 18 | exit(0); 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/exercises/sizepipe.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | int i, n; 8 | int fd[2]; 9 | 10 | if (pipe(fd) < 0) 11 | err_sys("pipe error"); 12 | set_fl(fd[1], O_NONBLOCK); 13 | 14 | /* write 1 byte at a time until pipe is full */ 15 | for (n = 0; ; n++) { 16 | if ((i = write(fd[1], "a", 1)) != 1) { 17 | printf("write ret %d, ", i); 18 | break; 19 | } 20 | } 21 | printf("pipe capacity = %d\n", n); 22 | exit(0); 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/exercises/sleep.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | unsigned 6 | sleep(unsigned seconds) 7 | { 8 | int n; 9 | unsigned slept; 10 | time_t start, end; 11 | struct timeval tv; 12 | 13 | tv.tv_sec = seconds; 14 | tv.tv_usec = 0; 15 | time(&start); 16 | n = select(0, NULL, NULL, NULL, &tv); 17 | if (n == 0) 18 | return(0); 19 | time(&end); 20 | slept = end - start; 21 | if (slept >= seconds) 22 | return(0); 23 | return(seconds - slept); 24 | } 25 | -------------------------------------------------------------------------------- /apue.3e/exercises/sleepus_poll.c: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | void 4 | sleep_us(unsigned int nusecs) 5 | { 6 | struct pollfd dummy; 7 | int timeout; 8 | 9 | if ((timeout = nusecs / 1000) <= 0) 10 | timeout = 1; 11 | poll(&dummy, 0, timeout); 12 | } 13 | -------------------------------------------------------------------------------- /apue.3e/exercises/sleepus_select.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | void 5 | sleep_us(unsigned int nusecs) 6 | { 7 | struct timeval tval; 8 | 9 | tval.tv_sec = nusecs / 1000000; 10 | tval.tv_usec = nusecs % 1000000; 11 | select(0, NULL, NULL, NULL, &tval); 12 | } 13 | -------------------------------------------------------------------------------- /apue.3e/exercises/vfork3.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | static void f1(void), f2(void); 4 | 5 | int 6 | main(void) 7 | { 8 | f1(); 9 | f2(); 10 | _exit(0); 11 | } 12 | 13 | static void 14 | f1(void) 15 | { 16 | pid_t pid; 17 | 18 | if ((pid = vfork()) < 0) 19 | err_sys("vfork error"); 20 | /* child and parent both return */ 21 | } 22 | 23 | static void 24 | f2(void) 25 | { 26 | char buf[1000]; /* automatic variables */ 27 | int i; 28 | 29 | for (i = 0; i < sizeof(buf); i++) 30 | buf[i] = 0; 31 | } 32 | -------------------------------------------------------------------------------- /apue.3e/exercises/zombie.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | #ifdef SOLARIS 4 | #define PSCMD "ps -a -o pid,ppid,s,tty,comm" 5 | #else 6 | #define PSCMD "ps -o pid,ppid,state,tty,command" 7 | #endif 8 | 9 | int 10 | main(void) 11 | { 12 | pid_t pid; 13 | 14 | if ((pid = fork()) < 0) 15 | err_sys("fork error"); 16 | else if (pid == 0) /* child */ 17 | exit(0); 18 | 19 | /* parent */ 20 | sleep(4); 21 | system(PSCMD); 22 | 23 | exit(0); 24 | } 25 | -------------------------------------------------------------------------------- /apue.3e/figlinks/fig1.10: -------------------------------------------------------------------------------- 1 | ../intro/shell2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig1.3: -------------------------------------------------------------------------------- 1 | ../intro/ls1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig1.4: -------------------------------------------------------------------------------- 1 | ../intro/mycat.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig1.5: -------------------------------------------------------------------------------- 1 | ../intro/getcputc.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig1.6: -------------------------------------------------------------------------------- 1 | ../intro/hello.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig1.7: -------------------------------------------------------------------------------- 1 | ../intro/shell1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig1.8: -------------------------------------------------------------------------------- 1 | ../intro/testerror.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig1.9: -------------------------------------------------------------------------------- 1 | ../intro/uidgid.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.10: -------------------------------------------------------------------------------- 1 | ../signals/read1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.11: -------------------------------------------------------------------------------- 1 | ../signals/read2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.12: -------------------------------------------------------------------------------- 1 | ../signals/setops.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.14: -------------------------------------------------------------------------------- 1 | ../lib/prmask.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.15: -------------------------------------------------------------------------------- 1 | ../signals/critical.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.18: -------------------------------------------------------------------------------- 1 | ../lib/signal.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.19: -------------------------------------------------------------------------------- 1 | ../lib/signalintr.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.2: -------------------------------------------------------------------------------- 1 | ../signals/sigusr.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.20: -------------------------------------------------------------------------------- 1 | ../signals/mask.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.22: -------------------------------------------------------------------------------- 1 | ../signals/suspend1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.23: -------------------------------------------------------------------------------- 1 | ../signals/suspend2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.24: -------------------------------------------------------------------------------- 1 | ../lib/tellwait.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.25: -------------------------------------------------------------------------------- 1 | ../signals/abort.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.26: -------------------------------------------------------------------------------- 1 | ../signals/systest2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.28: -------------------------------------------------------------------------------- 1 | ../signals/system.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.29: -------------------------------------------------------------------------------- 1 | ../lib/sleep.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.31: -------------------------------------------------------------------------------- 1 | ../signals/sigtstp.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.5: -------------------------------------------------------------------------------- 1 | ../signals/reenter.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.6: -------------------------------------------------------------------------------- 1 | ../signals/child.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.7: -------------------------------------------------------------------------------- 1 | ../signals/sleep1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.8: -------------------------------------------------------------------------------- 1 | ../signals/sleep2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig10.9: -------------------------------------------------------------------------------- 1 | ../signals/tsleep2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.10: -------------------------------------------------------------------------------- 1 | ../threads/mutex1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.11: -------------------------------------------------------------------------------- 1 | ../threads/mutex2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.12: -------------------------------------------------------------------------------- 1 | ../threads/mutex3.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.14: -------------------------------------------------------------------------------- 1 | ../threads/rwlock.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.15: -------------------------------------------------------------------------------- 1 | ../threads/condvar.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.16: -------------------------------------------------------------------------------- 1 | ../threads/barrier.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.2: -------------------------------------------------------------------------------- 1 | ../threads/threadid.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.3: -------------------------------------------------------------------------------- 1 | ../threads/exitstatus.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.4: -------------------------------------------------------------------------------- 1 | ../threads/badexit2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig11.5: -------------------------------------------------------------------------------- 1 | ../threads/cleanup.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig12.11: -------------------------------------------------------------------------------- 1 | ../threadctl/getenv1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig12.12: -------------------------------------------------------------------------------- 1 | ../threadctl/getenv2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig12.13: -------------------------------------------------------------------------------- 1 | ../threadctl/getenv3.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig12.16: -------------------------------------------------------------------------------- 1 | ../threadctl/suspend.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig12.17: -------------------------------------------------------------------------------- 1 | ../threadctl/atfork.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig12.4: -------------------------------------------------------------------------------- 1 | ../threadctl/detach.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig12.8: -------------------------------------------------------------------------------- 1 | ../threadctl/timeout.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig13.1: -------------------------------------------------------------------------------- 1 | ../daemons/init.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig13.6: -------------------------------------------------------------------------------- 1 | ../daemons/single.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig13.7: -------------------------------------------------------------------------------- 1 | ../daemons/reread.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig13.8: -------------------------------------------------------------------------------- 1 | ../daemons/reread2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig13.9: -------------------------------------------------------------------------------- 1 | ../lib/setfd.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.1: -------------------------------------------------------------------------------- 1 | ../advio/nonblockw.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.12: -------------------------------------------------------------------------------- 1 | ../advio/mandatory.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.20: -------------------------------------------------------------------------------- 1 | ../advio/rot13a.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.21: -------------------------------------------------------------------------------- 1 | ../advio/rot13c2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.24: -------------------------------------------------------------------------------- 1 | ../advio/writen.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.27: -------------------------------------------------------------------------------- 1 | ../advio/mcopy2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.5: -------------------------------------------------------------------------------- 1 | ../lib/lockreg.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.6: -------------------------------------------------------------------------------- 1 | ../lib/locktest.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.7: -------------------------------------------------------------------------------- 1 | ../advio/deadlock.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig14.9: -------------------------------------------------------------------------------- 1 | ../advio/lockfile.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.11: -------------------------------------------------------------------------------- 1 | ../ipc1/popen2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.12: -------------------------------------------------------------------------------- 1 | ../ipc1/popen.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.14: -------------------------------------------------------------------------------- 1 | ../ipc1/myuclc.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.15: -------------------------------------------------------------------------------- 1 | ../ipc1/popen1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.17: -------------------------------------------------------------------------------- 1 | ../ipc1/add2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.18: -------------------------------------------------------------------------------- 1 | ../ipc1/pipe4.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.19: -------------------------------------------------------------------------------- 1 | ../ipc1/add2stdio.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.31: -------------------------------------------------------------------------------- 1 | ../ipc1/tshm.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.33: -------------------------------------------------------------------------------- 1 | ../ipc1/devzero.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.35: -------------------------------------------------------------------------------- 1 | ../ipc1/slock.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.5: -------------------------------------------------------------------------------- 1 | ../ipc1/pipe1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.6: -------------------------------------------------------------------------------- 1 | ../ipc1/pipe2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig15.7: -------------------------------------------------------------------------------- 1 | ../ipc1/tellwait.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.10: -------------------------------------------------------------------------------- 1 | ../sockets/clconn.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.11: -------------------------------------------------------------------------------- 1 | ../sockets/clconn2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.12: -------------------------------------------------------------------------------- 1 | ../sockets/initsrv1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.16: -------------------------------------------------------------------------------- 1 | ../sockets/ruptime.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.17: -------------------------------------------------------------------------------- 1 | ../sockets/ruptimed.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.18: -------------------------------------------------------------------------------- 1 | ../sockets/ruptimed-fd.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.19: -------------------------------------------------------------------------------- 1 | ../sockets/ruptime-dg.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.20: -------------------------------------------------------------------------------- 1 | ../sockets/ruptimed-dg.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.22: -------------------------------------------------------------------------------- 1 | ../sockets/initsrv2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig16.9: -------------------------------------------------------------------------------- 1 | ../sockets/findsvc.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.10: -------------------------------------------------------------------------------- 1 | ../lib/cliconn.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.12: -------------------------------------------------------------------------------- 1 | ../lib/senderr.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.13: -------------------------------------------------------------------------------- 1 | ../lib/sendfd.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.14: -------------------------------------------------------------------------------- 1 | ../lib/recvfd.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.15: -------------------------------------------------------------------------------- 1 | ../ipc2/sendfd2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.16: -------------------------------------------------------------------------------- 1 | ../ipc2/recvfd2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.17: -------------------------------------------------------------------------------- 1 | ../ipc2/open.fe/open.h -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.18: -------------------------------------------------------------------------------- 1 | ../ipc2/open.fe/main.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.19: -------------------------------------------------------------------------------- 1 | ../ipc2/open.fe/open.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.2: -------------------------------------------------------------------------------- 1 | ../lib/spipe.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.20: -------------------------------------------------------------------------------- 1 | ../ipc2/opend.fe/opend.h -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.21: -------------------------------------------------------------------------------- 1 | ../ipc2/opend.fe/main.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.22: -------------------------------------------------------------------------------- 1 | ../ipc2/opend.fe/request.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.23: -------------------------------------------------------------------------------- 1 | ../lib/bufargs.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.24: -------------------------------------------------------------------------------- 1 | ../ipc2/opend.fe/cliargs.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.25: -------------------------------------------------------------------------------- 1 | ../ipc2/open/open.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.26: -------------------------------------------------------------------------------- 1 | ../ipc2/opend/opend.h -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.27: -------------------------------------------------------------------------------- 1 | ../ipc2/opend/client.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.28: -------------------------------------------------------------------------------- 1 | ../ipc2/opend/main.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.29: -------------------------------------------------------------------------------- 1 | ../ipc2/opend/loop.select.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.3: -------------------------------------------------------------------------------- 1 | ../ipc2/pollmsg.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.30: -------------------------------------------------------------------------------- 1 | ../ipc2/opend/loop.poll.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.31: -------------------------------------------------------------------------------- 1 | ../ipc2/opend/request.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.4: -------------------------------------------------------------------------------- 1 | ../ipc2/sendmsg.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.5: -------------------------------------------------------------------------------- 1 | ../ipc2/bindunix.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.8: -------------------------------------------------------------------------------- 1 | ../lib/servlisten.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig17.9: -------------------------------------------------------------------------------- 1 | ../lib/servaccept.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.10: -------------------------------------------------------------------------------- 1 | ../termios/settty.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.11: -------------------------------------------------------------------------------- 1 | ../termios/csize.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.12: -------------------------------------------------------------------------------- 1 | ../termios/ctermid.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.13: -------------------------------------------------------------------------------- 1 | ../termios/isatty.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.14: -------------------------------------------------------------------------------- 1 | ../termios/t_isatty.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.15: -------------------------------------------------------------------------------- 1 | ../termios/ttyname.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.16: -------------------------------------------------------------------------------- 1 | ../termios/t_ttyname.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.17: -------------------------------------------------------------------------------- 1 | ../termios/getpass.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.18: -------------------------------------------------------------------------------- 1 | ../termios/t_getpass.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.20: -------------------------------------------------------------------------------- 1 | ../lib/ttymodes.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.21: -------------------------------------------------------------------------------- 1 | ../termios/t_raw.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig18.22: -------------------------------------------------------------------------------- 1 | ../termios/winch.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig19.10: -------------------------------------------------------------------------------- 1 | ../lib/ptyfork.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig19.11: -------------------------------------------------------------------------------- 1 | ../pty/main.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig19.12: -------------------------------------------------------------------------------- 1 | ../pty/loop.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig19.16: -------------------------------------------------------------------------------- 1 | ../pty/driver.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig19.9: -------------------------------------------------------------------------------- 1 | ../lib/ptyopen.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig2.13: -------------------------------------------------------------------------------- 1 | ../standards/makeconf.awk -------------------------------------------------------------------------------- /apue.3e/figlinks/fig2.14: -------------------------------------------------------------------------------- 1 | ../standards/conf.c.modified -------------------------------------------------------------------------------- /apue.3e/figlinks/fig2.16: -------------------------------------------------------------------------------- 1 | ../lib/pathalloc.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig2.17: -------------------------------------------------------------------------------- 1 | ../lib/openmax.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig20.3: -------------------------------------------------------------------------------- 1 | ../db/t4.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig3.1: -------------------------------------------------------------------------------- 1 | ../fileio/seek.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig3.11: -------------------------------------------------------------------------------- 1 | ../fileio/fileflags.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig3.12: -------------------------------------------------------------------------------- 1 | ../fileio/setfl.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig3.2: -------------------------------------------------------------------------------- 1 | ../fileio/hole.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig3.5: -------------------------------------------------------------------------------- 1 | ../fileio/mycat.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.12: -------------------------------------------------------------------------------- 1 | ../filedir/changemod.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.16: -------------------------------------------------------------------------------- 1 | ../filedir/unlink.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.21: -------------------------------------------------------------------------------- 1 | ../filedir/zap.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.22: -------------------------------------------------------------------------------- 1 | ../filedir/ftw8.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.23: -------------------------------------------------------------------------------- 1 | ../filedir/mycd.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.24: -------------------------------------------------------------------------------- 1 | ../filedir/cdpwd.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.25: -------------------------------------------------------------------------------- 1 | ../filedir/devrdev.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.3: -------------------------------------------------------------------------------- 1 | ../filedir/filetype.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.8: -------------------------------------------------------------------------------- 1 | ../filedir/access.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig4.9: -------------------------------------------------------------------------------- 1 | ../filedir/umask.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig5.11: -------------------------------------------------------------------------------- 1 | ../stdio/buf.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig5.12: -------------------------------------------------------------------------------- 1 | ../stdio/tempfiles.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig5.13: -------------------------------------------------------------------------------- 1 | ../stdio/mkstemp.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig5.15: -------------------------------------------------------------------------------- 1 | ../stdio/memstr.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig5.4: -------------------------------------------------------------------------------- 1 | ../stdio/getcputc.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig5.5: -------------------------------------------------------------------------------- 1 | ../stdio/fgetsfputs.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig6.11: -------------------------------------------------------------------------------- 1 | ../datafiles/strftime.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig6.2: -------------------------------------------------------------------------------- 1 | ../datafiles/getpwnam.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig7.1: -------------------------------------------------------------------------------- 1 | ../environ/hello1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig7.11: -------------------------------------------------------------------------------- 1 | ../environ/cmd2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig7.13: -------------------------------------------------------------------------------- 1 | ../environ/testjmp.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig7.14: -------------------------------------------------------------------------------- 1 | ../environ/opendata.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig7.16: -------------------------------------------------------------------------------- 1 | ../environ/getrlimit.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig7.3: -------------------------------------------------------------------------------- 1 | ../environ/doatexit.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig7.4: -------------------------------------------------------------------------------- 1 | ../environ/echoarg.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig7.9: -------------------------------------------------------------------------------- 1 | ../environ/cmd1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.1: -------------------------------------------------------------------------------- 1 | ../proc/fork1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.12: -------------------------------------------------------------------------------- 1 | ../proc/tellwait1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.13: -------------------------------------------------------------------------------- 1 | ../proc/tellwait2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.16: -------------------------------------------------------------------------------- 1 | ../proc/exec1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.17: -------------------------------------------------------------------------------- 1 | ../proc/echoall.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.20: -------------------------------------------------------------------------------- 1 | ../proc/exec2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.21: -------------------------------------------------------------------------------- 1 | ../proc/awkexample -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.22: -------------------------------------------------------------------------------- 1 | ../proc/system.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.23: -------------------------------------------------------------------------------- 1 | ../proc/systest1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.24: -------------------------------------------------------------------------------- 1 | ../proc/systest3.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.25: -------------------------------------------------------------------------------- 1 | ../proc/pruids.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.28: -------------------------------------------------------------------------------- 1 | ../proc/test1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.29: -------------------------------------------------------------------------------- 1 | ../proc/pracct.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.3: -------------------------------------------------------------------------------- 1 | ../proc/vfork1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.30: -------------------------------------------------------------------------------- 1 | ../proc/nice.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.31: -------------------------------------------------------------------------------- 1 | ../proc/times1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.5: -------------------------------------------------------------------------------- 1 | ../lib/prexit.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.6: -------------------------------------------------------------------------------- 1 | ../proc/wait1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig8.8: -------------------------------------------------------------------------------- 1 | ../proc/fork2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/fig9.12: -------------------------------------------------------------------------------- 1 | ../relation/orphan3.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figB.1: -------------------------------------------------------------------------------- 1 | ../include/apue.h -------------------------------------------------------------------------------- /apue.3e/figlinks/figB.3: -------------------------------------------------------------------------------- 1 | ../lib/error.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figB.4: -------------------------------------------------------------------------------- 1 | ../lib/errorlog.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.1: -------------------------------------------------------------------------------- 1 | ../exercises/openmax.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.10: -------------------------------------------------------------------------------- 1 | ../exercises/zombie.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.12: -------------------------------------------------------------------------------- 1 | ../exercises/goodexit.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.13: -------------------------------------------------------------------------------- 1 | ../exercises/sleep.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.14: -------------------------------------------------------------------------------- 1 | ../exercises/getlogin.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.15: -------------------------------------------------------------------------------- 1 | ../exercises/pendlock.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.16: -------------------------------------------------------------------------------- 1 | ../exercises/sleepus_select.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.17: -------------------------------------------------------------------------------- 1 | ../exercises/sleepus_poll.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.18: -------------------------------------------------------------------------------- 1 | ../exercises/sizepipe.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.20: -------------------------------------------------------------------------------- 1 | ../exercises/fifo1.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.22: -------------------------------------------------------------------------------- 1 | ../exercises/bo.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.23: -------------------------------------------------------------------------------- 1 | ../exercises/asyncsocket.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.24: -------------------------------------------------------------------------------- 1 | ../exercises/pollmsg2.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.3: -------------------------------------------------------------------------------- 1 | ../exercises/longpath.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.4: -------------------------------------------------------------------------------- 1 | ../exercises/fmemopen.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.5: -------------------------------------------------------------------------------- 1 | ../exercises/getpwsvr4.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.6: -------------------------------------------------------------------------------- 1 | ../exercises/getpw44bsd.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.7: -------------------------------------------------------------------------------- 1 | ../exercises/prtime.c -------------------------------------------------------------------------------- /apue.3e/figlinks/figC.8: -------------------------------------------------------------------------------- 1 | ../exercises/vfork3.c -------------------------------------------------------------------------------- /apue.3e/filedir/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "linux" 6 | ZAP = zap 7 | else 8 | ZAP = 9 | endif 10 | 11 | 12 | PROGS = access cdpwd changemod devrdev filetype mycd umask unlink $(ZAP) 13 | MOREPROGS = ftw8 14 | 15 | all: $(PROGS) $(MOREPROGS) 16 | 17 | %: %.c $(LIBAPUE) 18 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 19 | 20 | ftw8: ftw8.c $(LIBAPUE) 21 | $(CC) $(CFLAGS) $(NAMEMAX) ftw8.c -o ftw8 $(LDFLAGS) $(LDLIBS) 22 | 23 | clean: 24 | rm -f $(PROGS) $(MOREPROGS) $(TEMPFILES) *.o $(ZAP) 25 | 26 | include $(ROOT)/Make.libapue.inc 27 | -------------------------------------------------------------------------------- /apue.3e/filedir/access.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(int argc, char *argv[]) 6 | { 7 | if (argc != 2) 8 | err_quit("usage: a.out "); 9 | if (access(argv[1], R_OK) < 0) 10 | err_ret("access error for %s", argv[1]); 11 | else 12 | printf("read access OK\n"); 13 | if (open(argv[1], O_RDONLY) < 0) 14 | err_ret("open error for %s", argv[1]); 15 | else 16 | printf("open for reading OK\n"); 17 | exit(0); 18 | } 19 | -------------------------------------------------------------------------------- /apue.3e/filedir/cdpwd.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | char *ptr; 7 | size_t size; 8 | 9 | if (chdir("/usr/spool/uucppublic") < 0) 10 | err_sys("chdir failed"); 11 | 12 | ptr = path_alloc(&size); /* our own function */ 13 | if (getcwd(ptr, size) == NULL) 14 | err_sys("getcwd failed"); 15 | 16 | printf("cwd = %s\n", ptr); 17 | exit(0); 18 | } 19 | -------------------------------------------------------------------------------- /apue.3e/filedir/changemod.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | struct stat statbuf; 7 | 8 | /* turn on set-group-ID and turn off group-execute */ 9 | 10 | if (stat("foo", &statbuf) < 0) 11 | err_sys("stat error for foo"); 12 | if (chmod("foo", (statbuf.st_mode & ~S_IXGRP) | S_ISGID) < 0) 13 | err_sys("chmod error for foo"); 14 | 15 | /* set absolute mode to "rw-r--r--" */ 16 | 17 | if (chmod("bar", S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) 18 | err_sys("chmod error for bar"); 19 | 20 | exit(0); 21 | } 22 | -------------------------------------------------------------------------------- /apue.3e/filedir/devrdev.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #ifdef SOLARIS 3 | #include 4 | #endif 5 | 6 | int 7 | main(int argc, char *argv[]) 8 | { 9 | int i; 10 | struct stat buf; 11 | 12 | for (i = 1; i < argc; i++) { 13 | printf("%s: ", argv[i]); 14 | if (stat(argv[i], &buf) < 0) { 15 | err_ret("stat error"); 16 | continue; 17 | } 18 | 19 | printf("dev = %d/%d", major(buf.st_dev), minor(buf.st_dev)); 20 | 21 | if (S_ISCHR(buf.st_mode) || S_ISBLK(buf.st_mode)) { 22 | printf(" (%s) rdev = %d/%d", 23 | (S_ISCHR(buf.st_mode)) ? "character" : "block", 24 | major(buf.st_rdev), minor(buf.st_rdev)); 25 | } 26 | printf("\n"); 27 | } 28 | 29 | exit(0); 30 | } 31 | 32 | -------------------------------------------------------------------------------- /apue.3e/filedir/filetype.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(int argc, char *argv[]) 5 | { 6 | int i; 7 | struct stat buf; 8 | char *ptr; 9 | 10 | for (i = 1; i < argc; i++) { 11 | printf("%s: ", argv[i]); 12 | if (lstat(argv[i], &buf) < 0) { 13 | err_ret("lstat error"); 14 | continue; 15 | } 16 | if (S_ISREG(buf.st_mode)) 17 | ptr = "regular"; 18 | else if (S_ISDIR(buf.st_mode)) 19 | ptr = "directory"; 20 | else if (S_ISCHR(buf.st_mode)) 21 | ptr = "character special"; 22 | else if (S_ISBLK(buf.st_mode)) 23 | ptr = "block special"; 24 | else if (S_ISFIFO(buf.st_mode)) 25 | ptr = "fifo"; 26 | else if (S_ISLNK(buf.st_mode)) 27 | ptr = "symbolic link"; 28 | else if (S_ISSOCK(buf.st_mode)) 29 | ptr = "socket"; 30 | else 31 | ptr = "** unknown mode **"; 32 | printf("%s\n", ptr); 33 | } 34 | exit(0); 35 | } 36 | -------------------------------------------------------------------------------- /apue.3e/filedir/mycd.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | if (chdir("/tmp") < 0) 7 | err_sys("chdir failed"); 8 | printf("chdir to /tmp succeeded\n"); 9 | exit(0); 10 | } 11 | -------------------------------------------------------------------------------- /apue.3e/filedir/umask.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define RWRWRW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 5 | 6 | int 7 | main(void) 8 | { 9 | umask(0); 10 | if (creat("foo", RWRWRW) < 0) 11 | err_sys("creat error for foo"); 12 | umask(S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH); 13 | if (creat("bar", RWRWRW) < 0) 14 | err_sys("creat error for bar"); 15 | exit(0); 16 | } 17 | -------------------------------------------------------------------------------- /apue.3e/filedir/unlink.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | if (open("tempfile", O_RDWR) < 0) 8 | err_sys("open error"); 9 | if (unlink("tempfile") < 0) 10 | err_sys("unlink error"); 11 | printf("file unlinked\n"); 12 | sleep(15); 13 | printf("done\n"); 14 | exit(0); 15 | } 16 | -------------------------------------------------------------------------------- /apue.3e/filedir/zap.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(int argc, char *argv[]) 6 | { 7 | int i, fd; 8 | struct stat statbuf; 9 | struct timespec times[2]; 10 | 11 | for (i = 1; i < argc; i++) { 12 | if (stat(argv[i], &statbuf) < 0) { /* fetch current times */ 13 | err_ret("%s: stat error", argv[i]); 14 | continue; 15 | } 16 | if ((fd = open(argv[i], O_RDWR | O_TRUNC)) < 0) { /* truncate */ 17 | err_ret("%s: open error", argv[i]); 18 | continue; 19 | } 20 | times[0] = statbuf.st_atim; 21 | times[1] = statbuf.st_mtim; 22 | if (futimens(fd, times) < 0) /* reset times */ 23 | err_ret("%s: futimens error", argv[i]); 24 | close(fd); 25 | } 26 | exit(0); 27 | } 28 | -------------------------------------------------------------------------------- /apue.3e/fileio/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | PROGS = fileflags hole mycat seek 6 | 7 | all: $(PROGS) setfl.o 8 | 9 | %: %.c $(LIBAPUE) 10 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 11 | 12 | clean: 13 | rm -f $(PROGS) $(TEMPFILES) *.o file.hole 14 | 15 | include $(ROOT)/Make.libapue.inc 16 | -------------------------------------------------------------------------------- /apue.3e/fileio/hole.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | char buf1[] = "abcdefghij"; 5 | char buf2[] = "ABCDEFGHIJ"; 6 | 7 | int 8 | main(void) 9 | { 10 | int fd; 11 | 12 | if ((fd = creat("file.hole", FILE_MODE)) < 0) 13 | err_sys("creat error"); 14 | 15 | if (write(fd, buf1, 10) != 10) 16 | err_sys("buf1 write error"); 17 | /* offset now = 10 */ 18 | 19 | if (lseek(fd, 16384, SEEK_SET) == -1) 20 | err_sys("lseek error"); 21 | /* offset now = 16384 */ 22 | 23 | if (write(fd, buf2, 10) != 10) 24 | err_sys("buf2 write error"); 25 | /* offset now = 16394 */ 26 | 27 | exit(0); 28 | } 29 | -------------------------------------------------------------------------------- /apue.3e/fileio/mycat.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | #define BUFFSIZE 4096 4 | 5 | int 6 | main(void) 7 | { 8 | int n; 9 | char buf[BUFFSIZE]; 10 | 11 | while ((n = read(STDIN_FILENO, buf, BUFFSIZE)) > 0) 12 | if (write(STDOUT_FILENO, buf, n) != n) 13 | err_sys("write error"); 14 | 15 | if (n < 0) 16 | err_sys("read error"); 17 | 18 | exit(0); 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/fileio/seek.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | if (lseek(STDIN_FILENO, 0, SEEK_CUR) == -1) 7 | printf("cannot seek\n"); 8 | else 9 | printf("seek OK\n"); 10 | exit(0); 11 | } 12 | -------------------------------------------------------------------------------- /apue.3e/fileio/setfl.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | void 5 | set_fl(int fd, int flags) /* flags are file status flags to turn on */ 6 | { 7 | int val; 8 | 9 | if ((val = fcntl(fd, F_GETFL, 0)) < 0) 10 | err_sys("fcntl F_GETFL error"); 11 | 12 | val |= flags; /* turn on flags */ 13 | 14 | if (fcntl(fd, F_SETFL, val) < 0) 15 | err_sys("fcntl F_SETFL error"); 16 | } 17 | -------------------------------------------------------------------------------- /apue.3e/intro/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | PROGS = getcputc hello ls1 mycat shell1 shell2 testerror uidgid 6 | 7 | all: $(PROGS) 8 | 9 | %: %.c $(LIBAPUE) 10 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 11 | 12 | clean: 13 | rm -f $(PROGS) $(TEMPFILES) *.o 14 | 15 | include $(ROOT)/Make.libapue.inc 16 | -------------------------------------------------------------------------------- /apue.3e/intro/getcputc.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | int c; 7 | 8 | while ((c = getc(stdin)) != EOF) 9 | if (putc(c, stdout) == EOF) 10 | err_sys("output error"); 11 | 12 | if (ferror(stdin)) 13 | err_sys("input error"); 14 | 15 | exit(0); 16 | } 17 | -------------------------------------------------------------------------------- /apue.3e/intro/hello.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | printf("hello world from process ID %ld\n", (long)getpid()); 7 | exit(0); 8 | } 9 | -------------------------------------------------------------------------------- /apue.3e/intro/ls1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(int argc, char *argv[]) 6 | { 7 | DIR *dp; 8 | struct dirent *dirp; 9 | 10 | if (argc != 2) 11 | err_quit("usage: ls directory_name"); 12 | 13 | if ((dp = opendir(argv[1])) == NULL) 14 | err_sys("can't open %s", argv[1]); 15 | while ((dirp = readdir(dp)) != NULL) 16 | printf("%s\n", dirp->d_name); 17 | 18 | closedir(dp); 19 | exit(0); 20 | } 21 | -------------------------------------------------------------------------------- /apue.3e/intro/mycat.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | #define BUFFSIZE 4096 4 | 5 | int 6 | main(void) 7 | { 8 | int n; 9 | char buf[BUFFSIZE]; 10 | 11 | while ((n = read(STDIN_FILENO, buf, BUFFSIZE)) > 0) 12 | if (write(STDOUT_FILENO, buf, n) != n) 13 | err_sys("write error"); 14 | 15 | if (n < 0) 16 | err_sys("read error"); 17 | 18 | exit(0); 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/intro/shell1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | char buf[MAXLINE]; /* from apue.h */ 8 | pid_t pid; 9 | int status; 10 | 11 | printf("%% "); /* print prompt (printf requires %% to print %) */ 12 | while (fgets(buf, MAXLINE, stdin) != NULL) { 13 | if (buf[strlen(buf) - 1] == '\n') 14 | buf[strlen(buf) - 1] = 0; /* replace newline with null */ 15 | 16 | if ((pid = fork()) < 0) { 17 | err_sys("fork error"); 18 | } else if (pid == 0) { /* child */ 19 | execlp(buf, buf, (char *)0); 20 | err_ret("couldn't execute: %s", buf); 21 | exit(127); 22 | } 23 | 24 | /* parent */ 25 | if ((pid = waitpid(pid, &status, 0)) < 0) 26 | err_sys("waitpid error"); 27 | printf("%% "); 28 | } 29 | exit(0); 30 | } 31 | -------------------------------------------------------------------------------- /apue.3e/intro/testerror.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(int argc, char *argv[]) 6 | { 7 | fprintf(stderr, "EACCES: %s\n", strerror(EACCES)); 8 | errno = ENOENT; 9 | perror(argv[0]); 10 | exit(0); 11 | } 12 | -------------------------------------------------------------------------------- /apue.3e/intro/uidgid.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | printf("uid = %d, gid = %d\n", getuid(), getgid()); 7 | exit(0); 8 | } 9 | -------------------------------------------------------------------------------- /apue.3e/ipc1/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | PROGS = add2 add2stdio devzero myuclc pipe1 pipe2 pipe4 popen1 popen2 tshm 6 | 7 | all: $(PROGS) popen.o slock.o tellwait.o 8 | 9 | %: %.c $(LIBAPUE) 10 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 11 | 12 | slock.o: slock.c slock.h 13 | 14 | clean: 15 | rm -f $(PROGS) $(TEMPFILES) *.o 16 | 17 | include $(ROOT)/Make.libapue.inc 18 | -------------------------------------------------------------------------------- /apue.3e/ipc1/add2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | int n, int1, int2; 7 | char line[MAXLINE]; 8 | 9 | while ((n = read(STDIN_FILENO, line, MAXLINE)) > 0) { 10 | line[n] = 0; /* null terminate */ 11 | if (sscanf(line, "%d%d", &int1, &int2) == 2) { 12 | sprintf(line, "%d\n", int1 + int2); 13 | n = strlen(line); 14 | if (write(STDOUT_FILENO, line, n) != n) 15 | err_sys("write error"); 16 | } else { 17 | if (write(STDOUT_FILENO, "invalid args\n", 13) != 13) 18 | err_sys("write error"); 19 | } 20 | } 21 | exit(0); 22 | } 23 | -------------------------------------------------------------------------------- /apue.3e/ipc1/add2stdio.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | int int1, int2; 7 | char line[MAXLINE]; 8 | 9 | while (fgets(line, MAXLINE, stdin) != NULL) { 10 | if (sscanf(line, "%d%d", &int1, &int2) == 2) { 11 | if (printf("%d\n", int1 + int2) == EOF) 12 | err_sys("printf error"); 13 | } else { 14 | if (printf("invalid args\n") == EOF) 15 | err_sys("printf error"); 16 | } 17 | } 18 | exit(0); 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/ipc1/myuclc.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | int c; 8 | 9 | while ((c = getchar()) != EOF) { 10 | if (isupper(c)) 11 | c = tolower(c); 12 | if (putchar(c) == EOF) 13 | err_sys("output error"); 14 | if (c == '\n') 15 | fflush(stdout); 16 | } 17 | exit(0); 18 | } 19 | -------------------------------------------------------------------------------- /apue.3e/ipc1/pipe1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | int n; 7 | int fd[2]; 8 | pid_t pid; 9 | char line[MAXLINE]; 10 | 11 | if (pipe(fd) < 0) 12 | err_sys("pipe error"); 13 | if ((pid = fork()) < 0) { 14 | err_sys("fork error"); 15 | } else if (pid > 0) { /* parent */ 16 | close(fd[0]); 17 | write(fd[1], "hello world\n", 12); 18 | } else { /* child */ 19 | close(fd[1]); 20 | n = read(fd[0], line, MAXLINE); 21 | write(STDOUT_FILENO, line, n); 22 | } 23 | exit(0); 24 | } 25 | -------------------------------------------------------------------------------- /apue.3e/ipc1/popen1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | char line[MAXLINE]; 8 | FILE *fpin; 9 | 10 | if ((fpin = popen("myuclc", "r")) == NULL) 11 | err_sys("popen error"); 12 | for ( ; ; ) { 13 | fputs("prompt> ", stdout); 14 | fflush(stdout); 15 | if (fgets(line, MAXLINE, fpin) == NULL) /* read from pipe */ 16 | break; 17 | if (fputs(line, stdout) == EOF) 18 | err_sys("fputs error to pipe"); 19 | } 20 | if (pclose(fpin) == -1) 21 | err_sys("pclose error"); 22 | putchar('\n'); 23 | exit(0); 24 | } 25 | -------------------------------------------------------------------------------- /apue.3e/ipc1/popen2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define PAGER "${PAGER:-more}" /* environment variable, or default */ 5 | 6 | int 7 | main(int argc, char *argv[]) 8 | { 9 | char line[MAXLINE]; 10 | FILE *fpin, *fpout; 11 | 12 | if (argc != 2) 13 | err_quit("usage: a.out "); 14 | if ((fpin = fopen(argv[1], "r")) == NULL) 15 | err_sys("can't open %s", argv[1]); 16 | 17 | if ((fpout = popen(PAGER, "w")) == NULL) 18 | err_sys("popen error"); 19 | 20 | /* copy argv[1] to pager */ 21 | while (fgets(line, MAXLINE, fpin) != NULL) { 22 | if (fputs(line, fpout) == EOF) 23 | err_sys("fputs error to pipe"); 24 | } 25 | if (ferror(fpin)) 26 | err_sys("fgets error"); 27 | if (pclose(fpout) == -1) 28 | err_sys("pclose error"); 29 | 30 | exit(0); 31 | } 32 | -------------------------------------------------------------------------------- /apue.3e/ipc1/slock.h: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | 6 | struct slock { 7 | sem_t *semp; 8 | char name[_POSIX_NAME_MAX]; 9 | }; 10 | 11 | struct slock * s_alloc(); 12 | void s_free(struct slock *); 13 | int s_lock(struct slock *); 14 | int s_trylock(struct slock *); 15 | int s_unlock(struct slock *); 16 | -------------------------------------------------------------------------------- /apue.3e/ipc1/tellwait.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | static int pfd1[2], pfd2[2]; 4 | 5 | void 6 | TELL_WAIT(void) 7 | { 8 | if (pipe(pfd1) < 0 || pipe(pfd2) < 0) 9 | err_sys("pipe error"); 10 | } 11 | 12 | void 13 | TELL_PARENT(pid_t pid) 14 | { 15 | if (write(pfd2[1], "c", 1) != 1) 16 | err_sys("write error"); 17 | } 18 | 19 | void 20 | WAIT_PARENT(void) 21 | { 22 | char c; 23 | 24 | if (read(pfd1[0], &c, 1) != 1) 25 | err_sys("read error"); 26 | 27 | if (c != 'p') 28 | err_quit("WAIT_PARENT: incorrect data"); 29 | } 30 | 31 | void 32 | TELL_CHILD(pid_t pid) 33 | { 34 | if (write(pfd1[1], "p", 1) != 1) 35 | err_sys("write error"); 36 | } 37 | 38 | void 39 | WAIT_CHILD(void) 40 | { 41 | char c; 42 | 43 | if (read(pfd2[0], &c, 1) != 1) 44 | err_sys("read error"); 45 | 46 | if (c != 'c') 47 | err_quit("WAIT_CHILD: incorrect data"); 48 | } 49 | -------------------------------------------------------------------------------- /apue.3e/ipc2/bindunix.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | #include 4 | 5 | int 6 | main(void) 7 | { 8 | int fd, size; 9 | struct sockaddr_un un; 10 | 11 | un.sun_family = AF_UNIX; 12 | strcpy(un.sun_path, "foo.socket"); 13 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) 14 | err_sys("socket failed"); 15 | size = offsetof(struct sockaddr_un, sun_path) + strlen(un.sun_path); 16 | if (bind(fd, (struct sockaddr *)&un, size) < 0) 17 | err_sys("bind failed"); 18 | printf("UNIX domain socket bound\n"); 19 | exit(0); 20 | } 21 | -------------------------------------------------------------------------------- /apue.3e/ipc2/open.fe/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=../.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "solaris" 6 | EXTRALIBS=-lsocket -lnsl 7 | endif 8 | 9 | PROGS = openclient 10 | 11 | all: $(PROGS) 12 | 13 | openclient: main.o open.o $(LIBAPUE) 14 | $(CC) $(CFLAGS) -o openclient main.o open.o $(LDFLAGS) $(LDLIBS) 15 | 16 | clean: 17 | rm -f $(PROGS) $(TEMPFILES) *.o 18 | 19 | include $(ROOT)/Make.libapue.inc 20 | -------------------------------------------------------------------------------- /apue.3e/ipc2/open.fe/main.c: -------------------------------------------------------------------------------- 1 | #include "open.h" 2 | #include 3 | 4 | #define BUFFSIZE 8192 5 | 6 | int 7 | main(int argc, char *argv[]) 8 | { 9 | int n, fd; 10 | char buf[BUFFSIZE]; 11 | char line[MAXLINE]; 12 | 13 | /* read filename to cat from stdin */ 14 | while (fgets(line, MAXLINE, stdin) != NULL) { 15 | if (line[strlen(line) - 1] == '\n') 16 | line[strlen(line) - 1] = 0; /* replace newline with null */ 17 | 18 | /* open the file */ 19 | if ((fd = csopen(line, O_RDONLY)) < 0) 20 | continue; /* csopen() prints error from server */ 21 | 22 | /* and cat to stdout */ 23 | while ((n = read(fd, buf, BUFFSIZE)) > 0) 24 | if (write(STDOUT_FILENO, buf, n) != n) 25 | err_sys("write error"); 26 | if (n < 0) 27 | err_sys("read error"); 28 | close(fd); 29 | } 30 | 31 | exit(0); 32 | } 33 | -------------------------------------------------------------------------------- /apue.3e/ipc2/open.fe/open.h: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define CL_OPEN "open" /* client's request for server */ 5 | 6 | int csopen(char *, int); 7 | -------------------------------------------------------------------------------- /apue.3e/ipc2/open/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=../.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "solaris" 6 | EXTRALIBS=-lsocket -lnsl 7 | endif 8 | 9 | PROGS = openclient 10 | 11 | all: $(PROGS) 12 | 13 | openclient: main.o open.o $(LIBAPUE) 14 | $(CC) $(CFLAGS) -o openclient main.o open.o $(LDFLAGS) $(LDLIBS) 15 | 16 | clean: 17 | rm -f $(PROGS) $(TEMPFILES) *.o 18 | 19 | include $(ROOT)/Make.libapue.inc 20 | -------------------------------------------------------------------------------- /apue.3e/ipc2/open/main.c: -------------------------------------------------------------------------------- 1 | #include "open.h" 2 | #include 3 | 4 | #define BUFFSIZE 8192 5 | 6 | int 7 | main(int argc, char *argv[]) 8 | { 9 | int n, fd; 10 | char buf[BUFFSIZE], line[MAXLINE]; 11 | 12 | /* read filename to cat from stdin */ 13 | while (fgets(line, MAXLINE, stdin) != NULL) { 14 | if (line[strlen(line) - 1] == '\n') 15 | line[strlen(line) - 1] = 0; /* replace newline with null */ 16 | 17 | /* open the file */ 18 | if ((fd = csopen(line, O_RDONLY)) < 0) 19 | continue; /* csopen() prints error from server */ 20 | 21 | /* and cat to stdout */ 22 | while ((n = read(fd, buf, BUFFSIZE)) > 0) 23 | if (write(STDOUT_FILENO, buf, n) != n) 24 | err_sys("write error"); 25 | if (n < 0) 26 | err_sys("read error"); 27 | close(fd); 28 | } 29 | 30 | exit(0); 31 | } 32 | -------------------------------------------------------------------------------- /apue.3e/ipc2/open/open.h: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define CL_OPEN "open" /* client's request for server */ 5 | #define CS_OPEN "/tmp/opend.socket" /* server's well-known name */ 6 | 7 | int csopen(char *, int); 8 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend.fe/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=../.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "solaris" 6 | EXTRALIBS=-lsocket -lnsl 7 | endif 8 | 9 | PROGS = opend 10 | 11 | all: $(PROGS) 12 | 13 | opend: main.o request.o cliargs.o $(LIBAPUE) 14 | $(CC) $(CFLAGS) -o opend main.o cliargs.o request.o $(LDFLAGS) $(LDLIBS) 15 | 16 | clean: 17 | rm -f $(PROGS) $(TEMPFILES) *.o 18 | 19 | include $(ROOT)/Make.libapue.inc 20 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend.fe/cliargs.c: -------------------------------------------------------------------------------- 1 | #include "opend.h" 2 | 3 | /* 4 | * This function is called by buf_args(), which is called by 5 | * handle_request(). buf_args() has broken up the client's 6 | * buffer into an argv[]-style array, which we now process. 7 | */ 8 | int 9 | cli_args(int argc, char **argv) 10 | { 11 | if (argc != 3 || strcmp(argv[0], CL_OPEN) != 0) { 12 | strcpy(errmsg, "usage: \n"); 13 | return(-1); 14 | } 15 | pathname = argv[1]; /* save ptr to pathname to open */ 16 | oflag = atoi(argv[2]); 17 | return(0); 18 | } 19 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend.fe/main.c: -------------------------------------------------------------------------------- 1 | #include "opend.h" 2 | 3 | char errmsg[MAXLINE]; 4 | int oflag; 5 | char *pathname; 6 | 7 | int 8 | main(void) 9 | { 10 | int nread; 11 | char buf[MAXLINE]; 12 | 13 | for ( ; ; ) { /* read arg buffer from client, process request */ 14 | if ((nread = read(STDIN_FILENO, buf, MAXLINE)) < 0) 15 | err_sys("read error on stream pipe"); 16 | else if (nread == 0) 17 | break; /* client has closed the stream pipe */ 18 | handle_request(buf, nread, STDOUT_FILENO); 19 | } 20 | exit(0); 21 | } 22 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend.fe/opend.h: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define CL_OPEN "open" /* client's request for server */ 5 | 6 | extern char errmsg[]; /* error message string to return to client */ 7 | extern int oflag; /* open() flag: O_xxx ... */ 8 | extern char *pathname; /* of file to open() for client */ 9 | 10 | int cli_args(int, char **); 11 | void handle_request(char *, int, int); 12 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend.fe/request.c: -------------------------------------------------------------------------------- 1 | #include "opend.h" 2 | #include 3 | 4 | void 5 | handle_request(char *buf, int nread, int fd) 6 | { 7 | int newfd; 8 | 9 | if (buf[nread-1] != 0) { 10 | snprintf(errmsg, MAXLINE-1, 11 | "request not null terminated: %*.*s\n", nread, nread, buf); 12 | send_err(fd, -1, errmsg); 13 | return; 14 | } 15 | if (buf_args(buf, cli_args) < 0) { /* parse args & set options */ 16 | send_err(fd, -1, errmsg); 17 | return; 18 | } 19 | if ((newfd = open(pathname, oflag)) < 0) { 20 | snprintf(errmsg, MAXLINE-1, "can't open %s: %s\n", pathname, 21 | strerror(errno)); 22 | send_err(fd, -1, errmsg); 23 | return; 24 | } 25 | if (send_fd(fd, newfd) < 0) /* send the descriptor */ 26 | err_sys("send_fd error"); 27 | close(newfd); /* we're done with descriptor */ 28 | } 29 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=../.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "solaris" 6 | EXTRALIBS=-lsocket -lnsl 7 | endif 8 | 9 | PROGS = opend.poll opend.select 10 | 11 | all: $(PROGS) 12 | 13 | opend.poll: main.o request.o cliargs.o client.o loop.poll.o $(LIBAPUE) 14 | $(CC) $(CFLAGS) -o opend.poll main.o cliargs.o client.o request.o loop.poll.o \ 15 | $(LDFLAGS) $(LDLIBS) 16 | 17 | opend.select: main.o request.o cliargs.o client.o loop.select.o $(LIBAPUE) 18 | $(CC) $(CFLAGS) -o opend.select main.o cliargs.o client.o request.o loop.select.o \ 19 | $(LDFLAGS) $(LDLIBS) 20 | 21 | clean: 22 | rm -f $(PROGS) $(TEMPFILES) *.o 23 | 24 | include $(ROOT)/Make.libapue.inc 25 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend/cliargs.c: -------------------------------------------------------------------------------- 1 | #include "opend.h" 2 | 3 | /* 4 | * This function is called by buf_args(), which is called by 5 | * handle_request(). buf_args() has broken up the client's 6 | * buffer into an argv[] style array, which we now process. 7 | */ 8 | int 9 | cli_args(int argc, char **argv) 10 | { 11 | if (argc != 3 || strcmp(argv[0], CL_OPEN) != 0) { 12 | strcpy(errmsg, "usage: \n"); 13 | return(-1); 14 | } 15 | pathname = argv[1]; /* save ptr to pathname to open */ 16 | oflag = atoi(argv[2]); 17 | return(0); 18 | } 19 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend/main.c: -------------------------------------------------------------------------------- 1 | #include "opend.h" 2 | #include 3 | 4 | int debug, oflag, client_size, log_to_stderr; 5 | char errmsg[MAXLINE]; 6 | char *pathname; 7 | Client *client = NULL; 8 | 9 | int 10 | main(int argc, char *argv[]) 11 | { 12 | int c; 13 | 14 | log_open("open.serv", LOG_PID, LOG_USER); 15 | 16 | opterr = 0; /* don't want getopt() writing to stderr */ 17 | while ((c = getopt(argc, argv, "d")) != EOF) { 18 | switch (c) { 19 | case 'd': /* debug */ 20 | debug = log_to_stderr = 1; 21 | break; 22 | 23 | case '?': 24 | err_quit("unrecognized option: -%c", optopt); 25 | } 26 | } 27 | 28 | if (debug == 0) 29 | daemonize("opend"); 30 | 31 | loop(); /* never returns */ 32 | } 33 | -------------------------------------------------------------------------------- /apue.3e/ipc2/opend/opend.h: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define CS_OPEN "/tmp/opend.socket" /* well-known name */ 5 | #define CL_OPEN "open" /* client's request for server */ 6 | 7 | extern int debug; /* nonzero if interactive (not daemon) */ 8 | extern char errmsg[]; /* error message string to return to client */ 9 | extern int oflag; /* open flag: O_xxx ... */ 10 | extern char *pathname; /* of file to open for client */ 11 | 12 | typedef struct { /* one Client struct per connected client */ 13 | int fd; /* fd, or -1 if available */ 14 | uid_t uid; 15 | } Client; 16 | 17 | extern Client *client; /* ptr to malloc'ed array */ 18 | extern int client_size; /* # entries in client[] array */ 19 | 20 | int cli_args(int, char **); 21 | int client_add(int, uid_t); 22 | void client_del(int); 23 | void loop(void); 24 | void handle_request(char *, int, int, uid_t); 25 | -------------------------------------------------------------------------------- /apue.3e/ipc2/sendmsg.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define MAXMSZ 512 5 | 6 | struct mymesg { 7 | long mtype; 8 | char mtext[MAXMSZ]; 9 | }; 10 | 11 | int 12 | main(int argc, char *argv[]) 13 | { 14 | key_t key; 15 | long qid; 16 | size_t nbytes; 17 | struct mymesg m; 18 | 19 | if (argc != 3) { 20 | fprintf(stderr, "usage: sendmsg KEY message\n"); 21 | exit(1); 22 | } 23 | key = strtol(argv[1], NULL, 0); 24 | if ((qid = msgget(key, 0)) < 0) 25 | err_sys("can't open queue key %s", argv[1]); 26 | memset(&m, 0, sizeof(m)); 27 | strncpy(m.mtext, argv[2], MAXMSZ-1); 28 | nbytes = strlen(m.mtext); 29 | m.mtype = 1; 30 | if (msgsnd(qid, &m, nbytes, 0) < 0) 31 | err_sys("can't send message"); 32 | exit(0); 33 | } 34 | -------------------------------------------------------------------------------- /apue.3e/lib/Makefile: -------------------------------------------------------------------------------- 1 | # 2 | # Makefile for misc library. 3 | # 4 | ROOT=.. 5 | PLATFORM=$(shell $(ROOT)/systype.sh) 6 | include $(ROOT)/Make.defines.$(PLATFORM) 7 | 8 | LIBMISC = libapue.a 9 | OBJS = bufargs.o cliconn.o clrfl.o \ 10 | daemonize.o error.o errorlog.o lockreg.o locktest.o \ 11 | openmax.o pathalloc.o popen.o prexit.o prmask.o \ 12 | ptyfork.o ptyopen.o readn.o recvfd.o senderr.o sendfd.o \ 13 | servaccept.o servlisten.o setfd.o setfl.o signal.o signalintr.o \ 14 | sleepus.o spipe.o tellwait.o ttymodes.o writen.o 15 | 16 | all: $(LIBMISC) sleep.o 17 | 18 | $(LIBMISC): $(OBJS) 19 | $(AR) rv $(LIBMISC) $? 20 | $(RANLIB) $(LIBMISC) 21 | 22 | 23 | clean: 24 | rm -f *.o a.out core temp.* $(LIBMISC) 25 | 26 | include $(ROOT)/Make.libapue.inc 27 | -------------------------------------------------------------------------------- /apue.3e/lib/clrfl.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | void 5 | clr_fl(int fd, int flags) 6 | /* flags are the file status flags to turn off */ 7 | { 8 | int val; 9 | 10 | if ((val = fcntl(fd, F_GETFL, 0)) < 0) 11 | err_sys("fcntl F_GETFL error"); 12 | 13 | val &= ~flags; /* turn flags off */ 14 | 15 | if (fcntl(fd, F_SETFL, val) < 0) 16 | err_sys("fcntl F_SETFL error"); 17 | } 18 | -------------------------------------------------------------------------------- /apue.3e/lib/lockreg.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | lock_reg(int fd, int cmd, int type, off_t offset, int whence, off_t len) 6 | { 7 | struct flock lock; 8 | 9 | lock.l_type = type; /* F_RDLCK, F_WRLCK, F_UNLCK */ 10 | lock.l_start = offset; /* byte offset, relative to l_whence */ 11 | lock.l_whence = whence; /* SEEK_SET, SEEK_CUR, SEEK_END */ 12 | lock.l_len = len; /* #bytes (0 means to EOF) */ 13 | 14 | return(fcntl(fd, cmd, &lock)); 15 | } 16 | -------------------------------------------------------------------------------- /apue.3e/lib/locktest.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | pid_t 5 | lock_test(int fd, int type, off_t offset, int whence, off_t len) 6 | { 7 | struct flock lock; 8 | 9 | lock.l_type = type; /* F_RDLCK or F_WRLCK */ 10 | lock.l_start = offset; /* byte offset, relative to l_whence */ 11 | lock.l_whence = whence; /* SEEK_SET, SEEK_CUR, SEEK_END */ 12 | lock.l_len = len; /* #bytes (0 means to EOF) */ 13 | 14 | if (fcntl(fd, F_GETLK, &lock) < 0) 15 | err_sys("fcntl error"); 16 | 17 | if (lock.l_type == F_UNLCK) 18 | return(0); /* false, region isn't locked by another proc */ 19 | return(lock.l_pid); /* true, return pid of lock owner */ 20 | } 21 | -------------------------------------------------------------------------------- /apue.3e/lib/nspipe.c: -------------------------------------------------------------------------------- 1 | /* Create a named stream pipe. Called by server on initialization. */ 2 | 3 | #include "apue.h" 4 | #include 5 | #include 6 | 7 | int /* returns 0 if all OK, -1 if error (with errno set) */ 8 | ns_pipe(const char *name, int fd[2]) 9 | { 10 | int len; 11 | struct sockaddr_un unix_addr; 12 | 13 | if (fd_pipe(fd) < 0) /* create unnamed stream pipe */ 14 | return(-1); 15 | 16 | unlink(name); /* remove the name, if it already exists */ 17 | 18 | memset(&unix_addr, 0, sizeof(unix_addr)); 19 | unix_addr.sun_family = AF_UNIX; 20 | strcpy(unix_addr.sun_path, name); 21 | len = strlen(unix_addr.sun_path) + sizeof(unix_addr.sun_family); 22 | 23 | return(bind(fd[0], (struct sockaddr *) &unix_addr, len)); 24 | /* fd[0] has the name bound to it */ 25 | } 26 | -------------------------------------------------------------------------------- /apue.3e/lib/openmax.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | #include 4 | 5 | #ifdef OPEN_MAX 6 | static long openmax = OPEN_MAX; 7 | #else 8 | static long openmax = 0; 9 | #endif 10 | 11 | /* 12 | * If OPEN_MAX is indeterminate, this might be inadequate. 13 | */ 14 | #define OPEN_MAX_GUESS 256 15 | 16 | long 17 | open_max(void) 18 | { 19 | if (openmax == 0) { /* first time through */ 20 | errno = 0; 21 | if ((openmax = sysconf(_SC_OPEN_MAX)) < 0) { 22 | if (errno == 0) 23 | openmax = OPEN_MAX_GUESS; /* it's indeterminate */ 24 | else 25 | err_sys("sysconf error for _SC_OPEN_MAX"); 26 | } 27 | } 28 | return(openmax); 29 | } 30 | -------------------------------------------------------------------------------- /apue.3e/lib/prexit.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | void 5 | pr_exit(int status) 6 | { 7 | if (WIFEXITED(status)) 8 | printf("normal termination, exit status = %d\n", 9 | WEXITSTATUS(status)); 10 | else if (WIFSIGNALED(status)) 11 | printf("abnormal termination, signal number = %d%s\n", 12 | WTERMSIG(status), 13 | #ifdef WCOREDUMP 14 | WCOREDUMP(status) ? " (core file generated)" : ""); 15 | #else 16 | ""); 17 | #endif 18 | else if (WIFSTOPPED(status)) 19 | printf("child stopped, signal number = %d\n", 20 | WSTOPSIG(status)); 21 | } 22 | -------------------------------------------------------------------------------- /apue.3e/lib/prmask.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | void 5 | pr_mask(const char *str) 6 | { 7 | sigset_t sigset; 8 | int errno_save; 9 | 10 | errno_save = errno; /* we can be called by signal handlers */ 11 | if (sigprocmask(0, NULL, &sigset) < 0) { 12 | err_ret("sigprocmask error"); 13 | } else { 14 | printf("%s", str); 15 | if (sigismember(&sigset, SIGINT)) 16 | printf(" SIGINT"); 17 | if (sigismember(&sigset, SIGQUIT)) 18 | printf(" SIGQUIT"); 19 | if (sigismember(&sigset, SIGUSR1)) 20 | printf(" SIGUSR1"); 21 | if (sigismember(&sigset, SIGALRM)) 22 | printf(" SIGALRM"); 23 | 24 | /* remaining signals can go here */ 25 | 26 | printf("\n"); 27 | } 28 | 29 | errno = errno_save; /* restore errno */ 30 | } 31 | -------------------------------------------------------------------------------- /apue.3e/lib/readn.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | ssize_t /* Read "n" bytes from a descriptor */ 4 | readn(int fd, void *ptr, size_t n) 5 | { 6 | size_t nleft; 7 | ssize_t nread; 8 | 9 | nleft = n; 10 | while (nleft > 0) { 11 | if ((nread = read(fd, ptr, nleft)) < 0) { 12 | if (nleft == n) 13 | return(-1); /* error, return -1 */ 14 | else 15 | break; /* error, return amount read so far */ 16 | } else if (nread == 0) { 17 | break; /* EOF */ 18 | } 19 | nleft -= nread; 20 | ptr += nread; 21 | } 22 | return(n - nleft); /* return >= 0 */ 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/lib/senderr.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | /* 4 | * Used when we had planned to send an fd using send_fd(), 5 | * but encountered an error instead. We send the error back 6 | * using the send_fd()/recv_fd() protocol. 7 | */ 8 | int 9 | send_err(int fd, int errcode, const char *msg) 10 | { 11 | int n; 12 | 13 | if ((n = strlen(msg)) > 0) 14 | if (writen(fd, msg, n) != n) /* send the error message */ 15 | return(-1); 16 | 17 | if (errcode >= 0) 18 | errcode = -1; /* must be negative */ 19 | 20 | if (send_fd(fd, errcode) < 0) 21 | return(-1); 22 | 23 | return(0); 24 | } 25 | -------------------------------------------------------------------------------- /apue.3e/lib/setfd.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | set_cloexec(int fd) 6 | { 7 | int val; 8 | 9 | if ((val = fcntl(fd, F_GETFD, 0)) < 0) 10 | return(-1); 11 | 12 | val |= FD_CLOEXEC; /* enable close-on-exec */ 13 | 14 | return(fcntl(fd, F_SETFD, val)); 15 | } 16 | -------------------------------------------------------------------------------- /apue.3e/lib/setfl.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | void 5 | set_fl(int fd, int flags) /* flags are file status flags to turn on */ 6 | { 7 | int val; 8 | 9 | if ((val = fcntl(fd, F_GETFL, 0)) < 0) 10 | err_sys("fcntl F_GETFL error"); 11 | 12 | val |= flags; /* turn on flags */ 13 | 14 | if (fcntl(fd, F_SETFL, val) < 0) 15 | err_sys("fcntl F_SETFL error"); 16 | } 17 | -------------------------------------------------------------------------------- /apue.3e/lib/signal.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | /* Reliable version of signal(), using POSIX sigaction(). */ 4 | Sigfunc * 5 | signal(int signo, Sigfunc *func) 6 | { 7 | struct sigaction act, oact; 8 | 9 | act.sa_handler = func; 10 | sigemptyset(&act.sa_mask); 11 | act.sa_flags = 0; 12 | if (signo == SIGALRM) { 13 | #ifdef SA_INTERRUPT 14 | act.sa_flags |= SA_INTERRUPT; 15 | #endif 16 | } else { 17 | act.sa_flags |= SA_RESTART; 18 | } 19 | if (sigaction(signo, &act, &oact) < 0) 20 | return(SIG_ERR); 21 | return(oact.sa_handler); 22 | } 23 | -------------------------------------------------------------------------------- /apue.3e/lib/signalintr.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | Sigfunc * 4 | signal_intr(int signo, Sigfunc *func) 5 | { 6 | struct sigaction act, oact; 7 | 8 | act.sa_handler = func; 9 | sigemptyset(&act.sa_mask); 10 | act.sa_flags = 0; 11 | #ifdef SA_INTERRUPT 12 | act.sa_flags |= SA_INTERRUPT; 13 | #endif 14 | if (sigaction(signo, &act, &oact) < 0) 15 | return(SIG_ERR); 16 | return(oact.sa_handler); 17 | } 18 | -------------------------------------------------------------------------------- /apue.3e/lib/sleepus.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | void 5 | sleep_us(unsigned int nusecs) 6 | { 7 | struct timeval tval; 8 | 9 | tval.tv_sec = nusecs / 1000000; 10 | tval.tv_usec = nusecs % 1000000; 11 | select(0, NULL, NULL, NULL, &tval); 12 | } 13 | -------------------------------------------------------------------------------- /apue.3e/lib/spipe.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | /* 5 | * Returns a full-duplex pipe (a UNIX domain socket) with 6 | * the two file descriptors returned in fd[0] and fd[1]. 7 | */ 8 | int 9 | fd_pipe(int fd[2]) 10 | { 11 | return(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)); 12 | } 13 | -------------------------------------------------------------------------------- /apue.3e/lib/strerror.c: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | #ifndef LINUX 4 | extern char *sys_errlist[]; 5 | extern int sys_nerr; 6 | #endif 7 | 8 | char * 9 | strerror(int error) 10 | { 11 | static char mesg[30]; 12 | 13 | if (error >= 0 && error <= sys_nerr) 14 | return((char *)sys_errlist[error]); 15 | 16 | sprintf(mesg, "Unknown error (%d)", error); 17 | return(mesg); 18 | } 19 | -------------------------------------------------------------------------------- /apue.3e/lib/writen.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | ssize_t /* Write "n" bytes to a descriptor */ 4 | writen(int fd, const void *ptr, size_t n) 5 | { 6 | size_t nleft; 7 | ssize_t nwritten; 8 | 9 | nleft = n; 10 | while (nleft > 0) { 11 | if ((nwritten = write(fd, ptr, nleft)) < 0) { 12 | if (nleft == n) 13 | return(-1); /* error, return -1 */ 14 | else 15 | break; /* error, return amount written so far */ 16 | } else if (nwritten == 0) { 17 | break; 18 | } 19 | nleft -= nwritten; 20 | ptr += nwritten; 21 | } 22 | return(n - nleft); /* return >= 0 */ 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/proc/awkexample: -------------------------------------------------------------------------------- 1 | #!/usr/bin/awk -f 2 | # Note: on Solaris, use nawk instead 3 | BEGIN { 4 | for (i = 0; i < ARGC; i++) 5 | printf "ARGV[%d] = %s\n", i, ARGV[i] 6 | exit 7 | } 8 | -------------------------------------------------------------------------------- /apue.3e/proc/echoall.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(int argc, char *argv[]) 5 | { 6 | int i; 7 | char **ptr; 8 | extern char **environ; 9 | 10 | for (i = 0; i < argc; i++) /* echo all command-line args */ 11 | printf("argv[%d]: %s\n", i, argv[i]); 12 | 13 | for (ptr = environ; *ptr != 0; ptr++) /* and all env strings */ 14 | printf("%s\n", *ptr); 15 | 16 | exit(0); 17 | } 18 | -------------------------------------------------------------------------------- /apue.3e/proc/exec1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | char *env_init[] = { "USER=unknown", "PATH=/tmp", NULL }; 5 | 6 | int 7 | main(void) 8 | { 9 | pid_t pid; 10 | 11 | if ((pid = fork()) < 0) { 12 | err_sys("fork error"); 13 | } else if (pid == 0) { /* specify pathname, specify environment */ 14 | if (execle("/home/sar/bin/echoall", "echoall", "myarg1", 15 | "MY ARG2", (char *)0, env_init) < 0) 16 | err_sys("execle error"); 17 | } 18 | 19 | if (waitpid(pid, NULL, 0) < 0) 20 | err_sys("wait error"); 21 | 22 | if ((pid = fork()) < 0) { 23 | err_sys("fork error"); 24 | } else if (pid == 0) { /* specify filename, inherit environment */ 25 | if (execlp("echoall", "echoall", "only 1 arg", (char *)0) < 0) 26 | err_sys("execlp error"); 27 | } 28 | 29 | exit(0); 30 | } 31 | -------------------------------------------------------------------------------- /apue.3e/proc/exec2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | pid_t pid; 8 | 9 | if ((pid = fork()) < 0) { 10 | err_sys("fork error"); 11 | } else if (pid == 0) { /* child */ 12 | if (execl("/home/sar/bin/testinterp", 13 | "testinterp", "myarg1", "MY ARG2", (char *)0) < 0) 14 | err_sys("execl error"); 15 | } 16 | if (waitpid(pid, NULL, 0) < 0) /* parent */ 17 | err_sys("waitpid error"); 18 | exit(0); 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/proc/fork1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int globvar = 6; /* external variable in initialized data */ 4 | char buf[] = "a write to stdout\n"; 5 | 6 | int 7 | main(void) 8 | { 9 | int var; /* automatic variable on the stack */ 10 | pid_t pid; 11 | 12 | var = 88; 13 | if (write(STDOUT_FILENO, buf, sizeof(buf)-1) != sizeof(buf)-1) 14 | err_sys("write error"); 15 | printf("before fork\n"); /* we don't flush stdout */ 16 | 17 | if ((pid = fork()) < 0) { 18 | err_sys("fork error"); 19 | } else if (pid == 0) { /* child */ 20 | globvar++; /* modify variables */ 21 | var++; 22 | } else { 23 | sleep(2); /* parent */ 24 | } 25 | 26 | printf("pid = %ld, glob = %d, var = %d\n", (long)getpid(), globvar, 27 | var); 28 | exit(0); 29 | } 30 | -------------------------------------------------------------------------------- /apue.3e/proc/pruids.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | printf("real uid = %d, effective uid = %d\n", getuid(), geteuid()); 7 | exit(0); 8 | } 9 | -------------------------------------------------------------------------------- /apue.3e/proc/system.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | int 6 | system(const char *cmdstring) /* version without signal handling */ 7 | { 8 | pid_t pid; 9 | int status; 10 | 11 | if (cmdstring == NULL) 12 | return(1); /* always a command processor with UNIX */ 13 | 14 | if ((pid = fork()) < 0) { 15 | status = -1; /* probably out of processes */ 16 | } else if (pid == 0) { /* child */ 17 | execl("/bin/sh", "sh", "-c", cmdstring, (char *)0); 18 | _exit(127); /* execl error */ 19 | } else { /* parent */ 20 | while (waitpid(pid, &status, 0) < 0) { 21 | if (errno != EINTR) { 22 | status = -1; /* error other than EINTR from waitpid() */ 23 | break; 24 | } 25 | } 26 | } 27 | 28 | return(status); 29 | } 30 | -------------------------------------------------------------------------------- /apue.3e/proc/systest1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | int status; 8 | 9 | if ((status = system("date")) < 0) 10 | err_sys("system() error"); 11 | 12 | pr_exit(status); 13 | 14 | if ((status = system("nosuchcommand")) < 0) 15 | err_sys("system() error"); 16 | 17 | pr_exit(status); 18 | 19 | if ((status = system("who; exit 44")) < 0) 20 | err_sys("system() error"); 21 | 22 | pr_exit(status); 23 | 24 | exit(0); 25 | } 26 | -------------------------------------------------------------------------------- /apue.3e/proc/systest3.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(int argc, char *argv[]) 5 | { 6 | int status; 7 | 8 | if (argc < 2) 9 | err_quit("command-line argument required"); 10 | 11 | if ((status = system(argv[1])) < 0) 12 | err_sys("system() error"); 13 | 14 | pr_exit(status); 15 | 16 | exit(0); 17 | } 18 | -------------------------------------------------------------------------------- /apue.3e/proc/tellwait1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | static void charatatime(char *); 4 | 5 | int 6 | main(void) 7 | { 8 | pid_t pid; 9 | 10 | if ((pid = fork()) < 0) { 11 | err_sys("fork error"); 12 | } else if (pid == 0) { 13 | charatatime("output from child\n"); 14 | } else { 15 | charatatime("output from parent\n"); 16 | } 17 | exit(0); 18 | } 19 | 20 | static void 21 | charatatime(char *str) 22 | { 23 | char *ptr; 24 | int c; 25 | 26 | setbuf(stdout, NULL); /* set unbuffered */ 27 | for (ptr = str; (c = *ptr++) != 0; ) 28 | putc(c, stdout); 29 | } 30 | -------------------------------------------------------------------------------- /apue.3e/proc/tellwait2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | static void charatatime(char *); 4 | 5 | int 6 | main(void) 7 | { 8 | pid_t pid; 9 | 10 | TELL_WAIT(); 11 | 12 | if ((pid = fork()) < 0) { 13 | err_sys("fork error"); 14 | } else if (pid == 0) { 15 | WAIT_PARENT(); /* parent goes first */ 16 | charatatime("output from child\n"); 17 | } else { 18 | charatatime("output from parent\n"); 19 | TELL_CHILD(pid); 20 | } 21 | exit(0); 22 | } 23 | 24 | static void 25 | charatatime(char *str) 26 | { 27 | char *ptr; 28 | int c; 29 | 30 | setbuf(stdout, NULL); /* set unbuffered */ 31 | for (ptr = str; (c = *ptr++) != 0; ) 32 | putc(c, stdout); 33 | } 34 | -------------------------------------------------------------------------------- /apue.3e/proc/vfork1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int globvar = 6; /* external variable in initialized data */ 4 | 5 | int 6 | main(void) 7 | { 8 | int var; /* automatic variable on the stack */ 9 | pid_t pid; 10 | 11 | var = 88; 12 | printf("before vfork\n"); /* we don't flush stdio */ 13 | if ((pid = vfork()) < 0) { 14 | err_sys("vfork error"); 15 | } else if (pid == 0) { /* child */ 16 | globvar++; /* modify parent's variables */ 17 | var++; 18 | _exit(0); /* child terminates */ 19 | } 20 | 21 | /* parent continues here */ 22 | printf("pid = %ld, glob = %d, var = %d\n", (long)getpid(), globvar, 23 | var); 24 | exit(0); 25 | } 26 | -------------------------------------------------------------------------------- /apue.3e/pty/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "solaris" 6 | EXTRALIBS=-lsocket -lnsl 7 | endif 8 | 9 | PROGS = pty 10 | 11 | all: $(PROGS) 12 | 13 | pty: main.o loop.o driver.o $(LIBAPUE) 14 | $(CC) $(CFLAGS) -o pty main.o loop.o driver.o $(LDFLAGS) $(LDLIBS) 15 | 16 | clean: 17 | rm -f $(PROGS) $(TEMPFILES) *.o 18 | 19 | include $(ROOT)/Make.libapue.inc 20 | -------------------------------------------------------------------------------- /apue.3e/relation/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | PROGS = orphan3 6 | 7 | all: $(PROGS) 8 | 9 | %: %.c $(LIBAPUE) 10 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 11 | 12 | clean: 13 | rm -f $(PROGS) $(TEMPFILES) *.o 14 | 15 | include $(ROOT)/Make.libapue.inc 16 | -------------------------------------------------------------------------------- /apue.3e/signals/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | CLD = 6 | 7 | ifeq "$(PLATFORM)" "linux" 8 | CLD = child 9 | endif 10 | ifeq "$(PLATFORM)" "solaris" 11 | CLD = child 12 | endif 13 | 14 | PROGS = critical mask read1 read2 reenter sigtstp sigusr suspend1 suspend2 15 | MOREPROGS = systest2 tsleep2 16 | 17 | all: $(PROGS) $(MOREPROGS) abort.o sleep1.o sleep2.o system.o $(CLD) 18 | 19 | %: %.c $(LIBAPUE) 20 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 21 | 22 | tsleep2: tsleep2.o sleep2.o $(LIBAPUE) 23 | $(CC) $(CFLAGS) -o tsleep2 tsleep2.o sleep2.o $(LDFLAGS) $(LDLIBS) 24 | 25 | systest2: systest2.o system.o $(LIBAPUE) 26 | $(CC) $(CFLAGS) -o systest2 systest2.o system.o $(LDFLAGS) $(LDLIBS) 27 | 28 | clean: 29 | rm -f $(PROGS) $(MOREPROGS) $(TEMPFILES) *.o file.hole $(CLD) 30 | 31 | include $(ROOT)/Make.libapue.inc 32 | -------------------------------------------------------------------------------- /apue.3e/signals/child.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | static void sig_cld(int); 5 | 6 | int 7 | main() 8 | { 9 | pid_t pid; 10 | 11 | if (signal(SIGCLD, sig_cld) == SIG_ERR) 12 | perror("signal error"); 13 | if ((pid = fork()) < 0) { 14 | perror("fork error"); 15 | } else if (pid == 0) { /* child */ 16 | sleep(2); 17 | _exit(0); 18 | } 19 | 20 | pause(); /* parent */ 21 | exit(0); 22 | } 23 | 24 | static void 25 | sig_cld(int signo) /* interrupts pause() */ 26 | { 27 | pid_t pid; 28 | int status; 29 | 30 | printf("SIGCLD received\n"); 31 | 32 | if (signal(SIGCLD, sig_cld) == SIG_ERR) /* reestablish handler */ 33 | perror("signal error"); 34 | 35 | if ((pid = wait(&status)) < 0) /* fetch child status */ 36 | perror("wait error"); 37 | 38 | printf("pid = %d\n", pid); 39 | } 40 | -------------------------------------------------------------------------------- /apue.3e/signals/read1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | static void sig_alrm(int); 4 | 5 | int 6 | main(void) 7 | { 8 | int n; 9 | char line[MAXLINE]; 10 | 11 | if (signal(SIGALRM, sig_alrm) == SIG_ERR) 12 | err_sys("signal(SIGALRM) error"); 13 | 14 | alarm(10); 15 | if ((n = read(STDIN_FILENO, line, MAXLINE)) < 0) 16 | err_sys("read error"); 17 | alarm(0); 18 | 19 | write(STDOUT_FILENO, line, n); 20 | exit(0); 21 | } 22 | 23 | static void 24 | sig_alrm(int signo) 25 | { 26 | /* nothing to do, just return to interrupt the read */ 27 | } 28 | -------------------------------------------------------------------------------- /apue.3e/signals/read2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | static void sig_alrm(int); 5 | static jmp_buf env_alrm; 6 | 7 | int 8 | main(void) 9 | { 10 | int n; 11 | char line[MAXLINE]; 12 | 13 | if (signal(SIGALRM, sig_alrm) == SIG_ERR) 14 | err_sys("signal(SIGALRM) error"); 15 | if (setjmp(env_alrm) != 0) 16 | err_quit("read timeout"); 17 | 18 | alarm(10); 19 | if ((n = read(STDIN_FILENO, line, MAXLINE)) < 0) 20 | err_sys("read error"); 21 | alarm(0); 22 | 23 | write(STDOUT_FILENO, line, n); 24 | exit(0); 25 | } 26 | 27 | static void 28 | sig_alrm(int signo) 29 | { 30 | longjmp(env_alrm, 1); 31 | } 32 | -------------------------------------------------------------------------------- /apue.3e/signals/reenter.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | static void 5 | my_alarm(int signo) 6 | { 7 | struct passwd *rootptr; 8 | 9 | printf("in signal handler\n"); 10 | if ((rootptr = getpwnam("root")) == NULL) 11 | err_sys("getpwnam(root) error"); 12 | alarm(1); 13 | } 14 | 15 | int 16 | main(void) 17 | { 18 | struct passwd *ptr; 19 | 20 | signal(SIGALRM, my_alarm); 21 | alarm(1); 22 | for ( ; ; ) { 23 | if ((ptr = getpwnam("sar")) == NULL) 24 | err_sys("getpwnam error"); 25 | if (strcmp(ptr->pw_name, "sar") != 0) 26 | printf("return value corrupted!, pw_name = %s\n", 27 | ptr->pw_name); 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /apue.3e/signals/setops.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | /* 5 | * usually defines NSIG to include signal number 0. 6 | */ 7 | #define SIGBAD(signo) ((signo) <= 0 || (signo) >= NSIG) 8 | 9 | int 10 | sigaddset(sigset_t *set, int signo) 11 | { 12 | if (SIGBAD(signo)) { 13 | errno = EINVAL; 14 | return(-1); 15 | } 16 | *set |= 1 << (signo - 1); /* turn bit on */ 17 | return(0); 18 | } 19 | 20 | int 21 | sigdelset(sigset_t *set, int signo) 22 | { 23 | if (SIGBAD(signo)) { 24 | errno = EINVAL; 25 | return(-1); 26 | } 27 | *set &= ~(1 << (signo - 1)); /* turn bit off */ 28 | return(0); 29 | } 30 | 31 | int 32 | sigismember(const sigset_t *set, int signo) 33 | { 34 | if (SIGBAD(signo)) { 35 | errno = EINVAL; 36 | return(-1); 37 | } 38 | return((*set & (1 << (signo - 1))) != 0); 39 | } 40 | -------------------------------------------------------------------------------- /apue.3e/signals/sigusr.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | static void sig_usr(int); /* one handler for both signals */ 4 | 5 | int 6 | main(void) 7 | { 8 | if (signal(SIGUSR1, sig_usr) == SIG_ERR) 9 | err_sys("can't catch SIGUSR1"); 10 | if (signal(SIGUSR2, sig_usr) == SIG_ERR) 11 | err_sys("can't catch SIGUSR2"); 12 | for ( ; ; ) 13 | pause(); 14 | } 15 | 16 | static void 17 | sig_usr(int signo) /* argument is signal number */ 18 | { 19 | if (signo == SIGUSR1) 20 | printf("received SIGUSR1\n"); 21 | else if (signo == SIGUSR2) 22 | printf("received SIGUSR2\n"); 23 | else 24 | err_dump("received signal %d\n", signo); 25 | } 26 | -------------------------------------------------------------------------------- /apue.3e/signals/sleep1.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | static void 5 | sig_alrm(int signo) 6 | { 7 | /* nothing to do, just return to wake up the pause */ 8 | } 9 | 10 | unsigned int 11 | sleep1(unsigned int seconds) 12 | { 13 | if (signal(SIGALRM, sig_alrm) == SIG_ERR) 14 | return(seconds); 15 | alarm(seconds); /* start the timer */ 16 | pause(); /* next caught signal wakes us up */ 17 | return(alarm(0)); /* turn off timer, return unslept time */ 18 | } 19 | -------------------------------------------------------------------------------- /apue.3e/signals/sleep2.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | static jmp_buf env_alrm; 6 | 7 | static void 8 | sig_alrm(int signo) 9 | { 10 | longjmp(env_alrm, 1); 11 | } 12 | 13 | unsigned int 14 | sleep2(unsigned int seconds) 15 | { 16 | if (signal(SIGALRM, sig_alrm) == SIG_ERR) 17 | return(seconds); 18 | if (setjmp(env_alrm) == 0) { 19 | alarm(seconds); /* start the timer */ 20 | pause(); /* next caught signal wakes us up */ 21 | } 22 | return(alarm(0)); /* turn off timer, return unslept time */ 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/signals/systest2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | static void 4 | sig_int(int signo) 5 | { 6 | printf("caught SIGINT\n"); 7 | } 8 | 9 | static void 10 | sig_chld(int signo) 11 | { 12 | printf("caught SIGCHLD\n"); 13 | } 14 | 15 | int 16 | main(void) 17 | { 18 | if (signal(SIGINT, sig_int) == SIG_ERR) 19 | err_sys("signal(SIGINT) error"); 20 | if (signal(SIGCHLD, sig_chld) == SIG_ERR) 21 | err_sys("signal(SIGCHLD) error"); 22 | if (system("/bin/ed") < 0) 23 | err_sys("system() error"); 24 | exit(0); 25 | } 26 | -------------------------------------------------------------------------------- /apue.3e/signals/tsleep2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | unsigned int sleep2(unsigned int); 4 | static void sig_int(int); 5 | 6 | int 7 | main(void) 8 | { 9 | unsigned int unslept; 10 | 11 | if (signal(SIGINT, sig_int) == SIG_ERR) 12 | err_sys("signal(SIGINT) error"); 13 | unslept = sleep2(5); 14 | printf("sleep2 returned: %u\n", unslept); 15 | exit(0); 16 | } 17 | 18 | static void 19 | sig_int(int signo) 20 | { 21 | int i, j; 22 | volatile int k; 23 | 24 | /* 25 | * Tune these loops to run for more than 5 seconds 26 | * on whatever system this test program is run. 27 | */ 28 | printf("\nsig_int starting\n"); 29 | for (i = 0; i < 300000; i++) 30 | for (j = 0; j < 4000; j++) 31 | k += i * j; 32 | printf("sig_int finished\n"); 33 | } 34 | -------------------------------------------------------------------------------- /apue.3e/sockets/clconn.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define MAXSLEEP 128 5 | 6 | int 7 | connect_retry(int sockfd, const struct sockaddr *addr, socklen_t alen) 8 | { 9 | int numsec; 10 | 11 | /* 12 | * Try to connect with exponential backoff. 13 | */ 14 | for (numsec = 1; numsec <= MAXSLEEP; numsec <<= 1) { 15 | if (connect(sockfd, addr, alen) == 0) { 16 | /* 17 | * Connection accepted. 18 | */ 19 | return(0); 20 | } 21 | 22 | /* 23 | * Delay before trying again. 24 | */ 25 | if (numsec <= MAXSLEEP/2) 26 | sleep(numsec); 27 | } 28 | return(-1); 29 | } 30 | -------------------------------------------------------------------------------- /apue.3e/sockets/clconn2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | #define MAXSLEEP 128 5 | 6 | int 7 | connect_retry(int domain, int type, int protocol, 8 | const struct sockaddr *addr, socklen_t alen) 9 | { 10 | int numsec, fd; 11 | 12 | /* 13 | * Try to connect with exponential backoff. 14 | */ 15 | for (numsec = 1; numsec <= MAXSLEEP; numsec <<= 1) { 16 | if ((fd = socket(domain, type, protocol)) < 0) 17 | return(-1); 18 | if (connect(fd, addr, alen) == 0) { 19 | /* 20 | * Connection accepted. 21 | */ 22 | return(fd); 23 | } 24 | close(fd); 25 | 26 | /* 27 | * Delay before trying again. 28 | */ 29 | if (numsec <= MAXSLEEP/2) 30 | sleep(numsec); 31 | } 32 | return(-1); 33 | } 34 | -------------------------------------------------------------------------------- /apue.3e/sockets/initsrv1.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | #include 4 | 5 | int 6 | initserver(int type, const struct sockaddr *addr, socklen_t alen, 7 | int qlen) 8 | { 9 | int fd; 10 | int err = 0; 11 | 12 | if ((fd = socket(addr->sa_family, type, 0)) < 0) 13 | return(-1); 14 | if (bind(fd, addr, alen) < 0) 15 | goto errout; 16 | if (type == SOCK_STREAM || type == SOCK_SEQPACKET) { 17 | if (listen(fd, qlen) < 0) 18 | goto errout; 19 | } 20 | return(fd); 21 | 22 | errout: 23 | err = errno; 24 | close(fd); 25 | errno = err; 26 | return(-1); 27 | } 28 | -------------------------------------------------------------------------------- /apue.3e/sockets/initsrv2.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | #include 4 | 5 | int 6 | initserver(int type, const struct sockaddr *addr, socklen_t alen, 7 | int qlen) 8 | { 9 | int fd, err; 10 | int reuse = 1; 11 | 12 | if ((fd = socket(addr->sa_family, type, 0)) < 0) 13 | return(-1); 14 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, 15 | sizeof(int)) < 0) 16 | goto errout; 17 | if (bind(fd, addr, alen) < 0) 18 | goto errout; 19 | if (type == SOCK_STREAM || type == SOCK_SEQPACKET) 20 | if (listen(fd, qlen) < 0) 21 | goto errout; 22 | return(fd); 23 | 24 | errout: 25 | err = errno; 26 | close(fd); 27 | errno = err; 28 | return(-1); 29 | } 30 | -------------------------------------------------------------------------------- /apue.3e/standards/pathconf-lim.sym: -------------------------------------------------------------------------------- 1 | FILESIZEBITS _PC_FILESIZEBITS 2 | LINK_MAX _PC_LINK_MAX 3 | MAX_CANON _PC_MAX_CANON 4 | MAX_INPUT _PC_MAX_INPUT 5 | NAME_MAX _PC_NAME_MAX 6 | PATH_MAX _PC_PATH_MAX 7 | PIPE_BUF _PC_PIPE_BUF 8 | SYMLINK_MAX _PC_SYMLINK_MAX 9 | _POSIX_TIMESTAMP_RESOLUTION _PC_TIMESTAMP_RESOLUTION 10 | -------------------------------------------------------------------------------- /apue.3e/standards/pathconf-opt.sym: -------------------------------------------------------------------------------- 1 | _POSIX_CHOWN_RESTRICTED _PC_CHOWN_RESTRICTED 2 | _POSIX_NO_TRUNC _PC_NO_TRUNC 3 | _POSIX_VDISABLE _PC_VDISABLE 4 | _POSIX_ASYNC_IO _PC_ASYNC_IO 5 | _POSIX_PRIO_IO _PC_PRIO_IO 6 | _POSIX_SYNC_IO _PC_SYNC_IO 7 | _POSIX2_SYMLINKS _PC_2_SYMLINKS 8 | -------------------------------------------------------------------------------- /apue.3e/stdio/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | ifeq "$(PLATFORM)" "linux" 6 | MEMSTR = memstr 7 | else 8 | MEMSTR = 9 | endif 10 | 11 | PROGS = buf fgetsfputs getcharbug getcputc mkstemp tempfiles 12 | 13 | all: $(PROGS) $(MEMSTR) 14 | 15 | %: %.c $(LIBAPUE) 16 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 17 | 18 | clean: 19 | rm -f $(PROGS) $(TEMPFILES) *.o $(MEMSTR) 20 | 21 | include $(ROOT)/Make.libapue.inc 22 | -------------------------------------------------------------------------------- /apue.3e/stdio/fgetsfputs.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | char buf[MAXLINE]; 7 | 8 | while (fgets(buf, MAXLINE, stdin) != NULL) 9 | if (fputs(buf, stdout) == EOF) 10 | err_sys("output error"); 11 | 12 | if (ferror(stdin)) 13 | err_sys("input error"); 14 | 15 | exit(0); 16 | } 17 | -------------------------------------------------------------------------------- /apue.3e/stdio/getcharbug.c: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | int 4 | main(void) 5 | { 6 | char c; 7 | 8 | while ((c = getchar()) != EOF) 9 | putchar(c); 10 | } 11 | -------------------------------------------------------------------------------- /apue.3e/stdio/getcputc.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | int c; 7 | 8 | while ((c = getc(stdin)) != EOF) 9 | if (putc(c, stdout) == EOF) 10 | err_sys("output error"); 11 | 12 | if (ferror(stdin)) 13 | err_sys("input error"); 14 | 15 | exit(0); 16 | } 17 | -------------------------------------------------------------------------------- /apue.3e/stdio/tempfiles.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | char name[L_tmpnam], line[MAXLINE]; 7 | FILE *fp; 8 | 9 | printf("%s\n", tmpnam(NULL)); /* first temp name */ 10 | 11 | tmpnam(name); /* second temp name */ 12 | printf("%s\n", name); 13 | 14 | if ((fp = tmpfile()) == NULL) /* create temp file */ 15 | err_sys("tmpfile error"); 16 | fputs("one line of output\n", fp); /* write to temp file */ 17 | rewind(fp); /* then read it back */ 18 | if (fgets(line, sizeof(line), fp) == NULL) 19 | err_sys("fgets error"); 20 | fputs(line, stdout); /* print the line we wrote */ 21 | 22 | exit(0); 23 | } 24 | -------------------------------------------------------------------------------- /apue.3e/systype.sh: -------------------------------------------------------------------------------- 1 | # (leading space required for Xenix /bin/sh) 2 | 3 | # 4 | # Determine the type of *ix operating system that we're 5 | # running on, and echo an appropriate value. 6 | # This script is intended to be used in Makefiles. 7 | # (This is a kludge. Gotta be a better way.) 8 | # 9 | 10 | case `uname -s` in 11 | "FreeBSD") 12 | PLATFORM="freebsd" 13 | ;; 14 | "Linux") 15 | PLATFORM="linux" 16 | ;; 17 | "Darwin") 18 | PLATFORM="macos" 19 | ;; 20 | "SunOS") 21 | PLATFORM="solaris" 22 | ;; 23 | *) 24 | echo "Unknown platform" >&2 25 | exit 1 26 | esac 27 | echo $PLATFORM 28 | exit 0 29 | -------------------------------------------------------------------------------- /apue.3e/termios/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | PROGS = csize settty t_getpass t_isatty t_raw t_ttyname winch 6 | 7 | all: $(PROGS) ctermid.o getpass.o isatty.o ttyname.o 8 | 9 | %: %.c $(LIBAPUE) 10 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 11 | 12 | clean: 13 | rm -f $(PROGS) $(TEMPFILES) *.o 14 | 15 | include $(ROOT)/Make.libapue.inc 16 | -------------------------------------------------------------------------------- /apue.3e/termios/csize.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | struct termios term; 8 | 9 | if (tcgetattr(STDIN_FILENO, &term) < 0) 10 | err_sys("tcgetattr error"); 11 | 12 | switch (term.c_cflag & CSIZE) { 13 | case CS5: 14 | printf("5 bits/byte\n"); 15 | break; 16 | case CS6: 17 | printf("6 bits/byte\n"); 18 | break; 19 | case CS7: 20 | printf("7 bits/byte\n"); 21 | break; 22 | case CS8: 23 | printf("8 bits/byte\n"); 24 | break; 25 | default: 26 | printf("unknown bits/byte\n"); 27 | } 28 | 29 | term.c_cflag &= ~CSIZE; /* zero out the bits */ 30 | term.c_cflag |= CS8; /* set 8 bits/byte */ 31 | if (tcsetattr(STDIN_FILENO, TCSANOW, &term) < 0) 32 | err_sys("tcsetattr error"); 33 | 34 | exit(0); 35 | } 36 | -------------------------------------------------------------------------------- /apue.3e/termios/ctermid.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | static char ctermid_name[L_ctermid]; 5 | 6 | char * 7 | ctermid(char *str) 8 | { 9 | if (str == NULL) 10 | str = ctermid_name; 11 | return(strcpy(str, "/dev/tty")); /* strcpy() returns str */ 12 | } 13 | -------------------------------------------------------------------------------- /apue.3e/termios/isatty.c: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | int 4 | isatty(int fd) 5 | { 6 | struct termios ts; 7 | 8 | return(tcgetattr(fd, &ts) != -1); /* true if no error (is a tty) */ 9 | } 10 | -------------------------------------------------------------------------------- /apue.3e/termios/settty.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | main(void) 6 | { 7 | struct termios term; 8 | long vdisable; 9 | 10 | if (isatty(STDIN_FILENO) == 0) 11 | err_quit("standard input is not a terminal device"); 12 | 13 | if ((vdisable = fpathconf(STDIN_FILENO, _PC_VDISABLE)) < 0) 14 | err_quit("fpathconf error or _POSIX_VDISABLE not in effect"); 15 | 16 | if (tcgetattr(STDIN_FILENO, &term) < 0) /* fetch tty state */ 17 | err_sys("tcgetattr error"); 18 | 19 | term.c_cc[VINTR] = vdisable; /* disable INTR character */ 20 | term.c_cc[VEOF] = 2; /* EOF is Control-B */ 21 | 22 | if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &term) < 0) 23 | err_sys("tcsetattr error"); 24 | 25 | exit(0); 26 | } 27 | -------------------------------------------------------------------------------- /apue.3e/termios/t_getpass.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | char *getpass(const char *); 4 | 5 | int 6 | main(void) 7 | { 8 | char *ptr; 9 | 10 | if ((ptr = getpass("Enter password:")) == NULL) 11 | err_sys("getpass error"); 12 | printf("password: %s\n", ptr); 13 | 14 | /* now use password (probably encrypt it) ... */ 15 | 16 | while (*ptr != 0) 17 | *ptr++ = 0; /* zero it out when we're done with it */ 18 | exit(0); 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/termios/t_isatty.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | printf("fd 0: %s\n", isatty(0) ? "tty" : "not a tty"); 7 | printf("fd 1: %s\n", isatty(1) ? "tty" : "not a tty"); 8 | printf("fd 2: %s\n", isatty(2) ? "tty" : "not a tty"); 9 | exit(0); 10 | } 11 | -------------------------------------------------------------------------------- /apue.3e/termios/t_ttyname.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | 3 | int 4 | main(void) 5 | { 6 | char *name; 7 | if (isatty(0)) { 8 | name = ttyname(0); 9 | if (name == NULL) 10 | name = "undefined"; 11 | } else { 12 | name = "not a tty"; 13 | } 14 | printf("fd 0: %s\n", name); 15 | 16 | if (isatty(1)) { 17 | name = ttyname(1); 18 | if (name == NULL) 19 | name = "undefined"; 20 | } else { 21 | name = "not a tty"; 22 | } 23 | printf("fd 1: %s\n", name); 24 | 25 | if (isatty(2)) { 26 | name = ttyname(2); 27 | if (name == NULL) 28 | name = "undefined"; 29 | } else { 30 | name = "not a tty"; 31 | } 32 | printf("fd 2: %s\n", name); 33 | 34 | exit(0); 35 | } 36 | -------------------------------------------------------------------------------- /apue.3e/termios/winch.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | #ifndef TIOCGWINSZ 4 | #include 5 | #endif 6 | 7 | static void 8 | pr_winsize(int fd) 9 | { 10 | struct winsize size; 11 | 12 | if (ioctl(fd, TIOCGWINSZ, (char *) &size) < 0) 13 | err_sys("TIOCGWINSZ error"); 14 | printf("%d rows, %d columns\n", size.ws_row, size.ws_col); 15 | } 16 | 17 | static void 18 | sig_winch(int signo) 19 | { 20 | printf("SIGWINCH received\n"); 21 | pr_winsize(STDIN_FILENO); 22 | } 23 | 24 | int 25 | main(void) 26 | { 27 | if (isatty(STDIN_FILENO) == 0) 28 | exit(1); 29 | if (signal(SIGWINCH, sig_winch) == SIG_ERR) 30 | err_sys("signal error"); 31 | pr_winsize(STDIN_FILENO); /* print initial size */ 32 | for ( ; ; ) /* and sleep forever */ 33 | pause(); 34 | } 35 | -------------------------------------------------------------------------------- /apue.3e/threadctl/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | PLATFORM=$(shell $(ROOT)/systype.sh) 3 | include $(ROOT)/Make.defines.$(PLATFORM) 4 | 5 | TOUT = 6 | ifeq "$(PLATFORM)" "freebsd" 7 | EXTRALIBS = -pthread 8 | endif 9 | ifeq "$(PLATFORM)" "linux" 10 | EXTRALIBS = -pthread 11 | TOUT = timeout.o 12 | endif 13 | ifeq "$(PLATFORM)" "solaris" 14 | EXTRALIBS = -lpthread 15 | TOUT = timeout.o 16 | endif 17 | 18 | PROGS = atfork suspend 19 | 20 | all: $(PROGS) detach.o getenv1.o getenv2.o getenv3.o $(TOUT) 21 | 22 | %: %.c $(LIBAPUE) 23 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 24 | 25 | clean: 26 | rm -f $(PROGS) $(TEMPFILES) *.o 27 | 28 | include $(ROOT)/Make.libapue.inc 29 | -------------------------------------------------------------------------------- /apue.3e/threadctl/detach.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | int 5 | makethread(void *(*fn)(void *), void *arg) 6 | { 7 | int err; 8 | pthread_t tid; 9 | pthread_attr_t attr; 10 | 11 | err = pthread_attr_init(&attr); 12 | if (err != 0) 13 | return(err); 14 | err = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 15 | if (err == 0) 16 | err = pthread_create(&tid, &attr, fn, arg); 17 | pthread_attr_destroy(&attr); 18 | return(err); 19 | } 20 | -------------------------------------------------------------------------------- /apue.3e/threadctl/getenv1.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | #define MAXSTRINGSZ 4096 5 | 6 | static char envbuf[MAXSTRINGSZ]; 7 | 8 | extern char **environ; 9 | 10 | char * 11 | getenv(const char *name) 12 | { 13 | int i, len; 14 | 15 | len = strlen(name); 16 | for (i = 0; environ[i] != NULL; i++) { 17 | if ((strncmp(name, environ[i], len) == 0) && 18 | (environ[i][len] == '=')) { 19 | strncpy(envbuf, &environ[i][len+1], MAXSTRINGSZ-1); 20 | return(envbuf); 21 | } 22 | } 23 | return(NULL); 24 | } 25 | -------------------------------------------------------------------------------- /apue.3e/threads/Makefile: -------------------------------------------------------------------------------- 1 | ROOT=.. 2 | EXTRALIBS=-pthread 3 | PLATFORM=$(shell $(ROOT)/systype.sh) 4 | include $(ROOT)/Make.defines.$(PLATFORM) 5 | 6 | BAR = 7 | ifeq "$(PLATFORM)" "macos" 8 | TLOCK = 9 | EXTRALIBS=-pthread 10 | else 11 | TLOCK = timedlock 12 | endif 13 | ifeq "$(PLATFORM)" "linux" 14 | BAR = barrier 15 | EXTRALIBS=-pthread -lrt -lbsd 16 | endif 17 | ifeq "$(PLATFORM)" "freebsd" 18 | BAR = barrier 19 | EXTRALIBS=-pthread 20 | endif 21 | ifeq "$(PLATFORM)" "solaris" 22 | BAR = barrier 23 | EXTRALIBS=-lpthread -lrt 24 | endif 25 | 26 | PROGS = badexit2 cleanup exitstatus threadid 27 | 28 | all: $(PROGS) condvar.o maketimeout.o mutex1.o mutex2.o mutex3.o rwlock.o $(TLOCK) $(BAR) 29 | 30 | %: %.c $(LIBAPUE) 31 | $(CC) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LDLIBS) 32 | 33 | clean: 34 | rm -f $(PROGS) $(TEMPFILES) *.o $(TLOCK) $(BAR) 35 | 36 | include $(ROOT)/Make.libapue.inc 37 | -------------------------------------------------------------------------------- /apue.3e/threads/condvar.c: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | struct msg { 4 | struct msg *m_next; 5 | /* ... more stuff here ... */ 6 | }; 7 | 8 | struct msg *workq; 9 | 10 | pthread_cond_t qready = PTHREAD_COND_INITIALIZER; 11 | 12 | pthread_mutex_t qlock = PTHREAD_MUTEX_INITIALIZER; 13 | 14 | void 15 | process_msg(void) 16 | { 17 | struct msg *mp; 18 | 19 | for (;;) { 20 | pthread_mutex_lock(&qlock); 21 | while (workq == NULL) 22 | pthread_cond_wait(&qready, &qlock); 23 | mp = workq; 24 | workq = mp->m_next; 25 | pthread_mutex_unlock(&qlock); 26 | /* now process the message mp */ 27 | } 28 | } 29 | 30 | void 31 | enqueue_msg(struct msg *mp) 32 | { 33 | pthread_mutex_lock(&qlock); 34 | mp->m_next = workq; 35 | workq = mp; 36 | pthread_mutex_unlock(&qlock); 37 | pthread_cond_signal(&qready); 38 | } 39 | -------------------------------------------------------------------------------- /apue.3e/threads/maketimeout.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | void 5 | maketimeout(struct timespec *tsp, long minutes) 6 | { 7 | struct timeval now; 8 | 9 | /* get the current time */ 10 | gettimeofday(&now, NULL); 11 | tsp->tv_sec = now.tv_sec; 12 | tsp->tv_nsec = now.tv_usec * 1000; /* usec to nsec */ 13 | /* add the offset to get timeout value */ 14 | tsp->tv_sec += minutes * 60; 15 | } 16 | -------------------------------------------------------------------------------- /apue.3e/threads/threadid.c: -------------------------------------------------------------------------------- 1 | #include "apue.h" 2 | #include 3 | 4 | pthread_t ntid; 5 | 6 | void 7 | printids(const char *s) 8 | { 9 | pid_t pid; 10 | pthread_t tid; 11 | 12 | pid = getpid(); 13 | tid = pthread_self(); 14 | printf("%s pid %lu tid %lu (0x%lx)\n", s, (unsigned long)pid, 15 | (unsigned long)tid, (unsigned long)tid); 16 | } 17 | 18 | void * 19 | thr_fn(void *arg) 20 | { 21 | printids("new thread: "); 22 | return((void *)0); 23 | } 24 | 25 | int 26 | main(void) 27 | { 28 | int err; 29 | 30 | err = pthread_create(&ntid, NULL, thr_fn, NULL); 31 | if (err != 0) 32 | err_exit(err, "can't create thread"); 33 | printids("main thread:"); 34 | sleep(1); 35 | exit(0); 36 | } 37 | -------------------------------------------------------------------------------- /epolldir/Client: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/epolldir/Client -------------------------------------------------------------------------------- /epolldir/Client1: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/epolldir/Client1 -------------------------------------------------------------------------------- /epolldir/Sever: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VVictorQi/APUE/969987db50572feb948b2dba5113c605cd30b452/epolldir/Sever -------------------------------------------------------------------------------- /fork.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | int main(int argc,char** argv) 6 | { 7 | int fd; 8 | pid_t pid; 9 | pid=fork(); 10 | if(pid<0) 11 | { 12 | perror("fork"); 13 | } 14 | else if(pid>0) 15 | { 16 | wait(NULL); 17 | exit(EXIT_FAILURE); 18 | // 19 | } 20 | else 21 | { 22 | if(fd=open("/dev/tty1",O_RDWR)==-1) 23 | perror("open"); 24 | 25 | printf("pid=%d,ppid=%d\n",getpid(),getppid()); 26 | printf("sid=%d,tcgetsid=%d\n",getsid(getpid()),tcgetsid(fd)); 27 | printf("pigd=%d\n",getpgid(getpid())); 28 | 29 | } 30 | } 31 | --------------------------------------------------------------------------------