├── .gitignore
├── .travis.yml
├── CMakeLists.txt
├── COPYING
├── HISTORY.md
├── Makefile
├── README.md
├── romdir.c
├── romdir.h
└── romdirfs.c
/.gitignore:
--------------------------------------------------------------------------------
1 | *.bin
2 | *.img
3 | *.o
4 | build/
5 | romdirfs
6 |
--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
1 | language: c
2 |
3 | compiler:
4 | - gcc
5 | - clang
6 |
7 | before_install: sudo apt-get install -y libfuse-dev
8 |
9 | install:
10 | - make CC=$CC
11 | - sudo make install prefix=/usr/local
12 |
13 | script: romdirfs --version # no tests yet
14 |
--------------------------------------------------------------------------------
/CMakeLists.txt:
--------------------------------------------------------------------------------
1 | PROJECT("romdirfs" C)
2 |
3 | CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
4 |
5 | INCLUDE(${CMAKE_ROOT}/Modules/FindPkgConfig.cmake)
6 | PKG_CHECK_MODULES(FUSE fuse>=2.6)
7 |
8 | SET(CMAKE_C_FLAGS "-Wall -Werror -O2")
9 | ADD_DEFINITIONS(${FUSE_CFLAGS_OTHER})
10 | #ADD_DEFINITIONS(-DUSE_MMAP)
11 | INCLUDE_DIRECTORIES(${FUSE_INCLUDE_DIRS})
12 |
13 | ADD_EXECUTABLE(romdirfs romdir.c romdirfs.c)
14 | TARGET_LINK_LIBRARIES(romdirfs ${FUSE_LIBRARIES})
15 | INSTALL(TARGETS romdirfs DESTINATION bin)
16 |
--------------------------------------------------------------------------------
/COPYING:
--------------------------------------------------------------------------------
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549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 |
552 | 13. Use with the GNU Affero General Public License.
553 |
554 | Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work. The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 |
563 | 14. Revised Versions of this License.
564 |
565 | The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time. Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 |
570 | Each version is given a distinguishing version number. If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 |
635 | Copyright (C)
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | Copyright (C)
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
--------------------------------------------------------------------------------
/HISTORY.md:
--------------------------------------------------------------------------------
1 | History
2 | =======
3 |
4 | v1.2 (Apr 12 2012)
5 | ------------------
6 |
7 | * Migrate project from hg to git.
8 | * Add Makefile.
9 | * Move source files to root folder.
10 | * Let `romdir_extract()` return number of bytes written. Fixes a compile error
11 | under gcc 4.6.1.
12 | * Support Mac OS X.
13 | * Add Travis CI config.
14 | * Update documentation and convert it to markdown.
15 |
16 | v1.1 (Aug 25 2009)
17 | ------------------
18 |
19 | * Read whole input file into memory rather than reading each module's data.
20 | * Define `-DUSE_MMAP` to map the input file into memory with `mmap()`.
21 | * Add `EXTINFO` information to `romfile_t` struct.
22 |
23 | v1.0 (Jul 15 2009)
24 | ------------------
25 |
26 | * Initial public release
27 |
--------------------------------------------------------------------------------
/Makefile:
--------------------------------------------------------------------------------
1 | CC = gcc
2 | INSTALL = install
3 | STRIP = strip
4 |
5 | CFLAGS = -Wall -Werror -O2
6 | CFLAGS += $(shell pkg-config --cflags fuse)
7 | LIBS = $(shell pkg-config --libs fuse)
8 | prefix = $(HOME)
9 |
10 | PROG = romdirfs
11 | OBJS += romdir.o
12 | OBJS += romdirfs.o
13 |
14 | all: $(PROG)
15 |
16 | install: $(PROG)
17 | $(INSTALL) -d -m 755 '$(prefix)/bin/'
18 | $(INSTALL) $(PROG) '$(prefix)/bin/'
19 |
20 | $(PROG): $(OBJS)
21 | $(CC) $(CFLAGS) -o $@ $? $(LIBS)
22 | $(STRIP) $@
23 |
24 | $(OBJS): romdir.h
25 |
26 | clean:
27 | $(RM) $(PROG) $(OBJS)
28 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # romdirfs - ROMDIR filesystem in userspace
2 |
3 | romdirfs is a userspace filesystem for Linux and macOS that allows you to
4 | access the IOP modules contained in PS2 IOPRP images and BIOS dumps. The tool
5 | can mount the so-called ROMDIR "filesystem" in those PS2 files to a directory,
6 | thereby mapping the included IOP modules to actual (read-only) files.
7 |
8 | I mainly developed romdirfs because I was interested in the technology behind
9 | [FUSE] and wanted to implement a simple filesystem on my own. (With FUSE, you
10 | can easily export a virtual filesystem to the Linux kernel without root
11 | privileges.)
12 |
13 | More recently, I created a [Rust spike] for the same reason.
14 |
15 | ## Installation
16 |
17 | romdirfs requires a working FUSE implementation. Under Ubuntu/Debian, you can
18 | install the package `libfuse-dev` (version 2.6 or higher). Get [FUSE for macOS]
19 | if you are on macOS.
20 |
21 | To build and install romdirfs, simply run:
22 |
23 | $ make
24 | $ make install
25 |
26 | CMake is supported too:
27 |
28 | $ mkdir build
29 | $ cd build/
30 | $ cmake ..
31 | $ make
32 | $ make install
33 |
34 | ## Usage
35 |
36 | usage: romdirfs [options]
37 | must be a PS2 IOPRP image or BIOS dump
38 |
39 | ROMDIRFS options:
40 | -V, --version print version
41 | -h, --help print help
42 | -D, -o romdirfs_debug print some debugging information
43 |
44 | You can get the complete option list with `--help`.
45 |
46 | To unmount the filesystem on Linux:
47 |
48 | $ fusermount -u
49 |
50 | To unmount the filesystem on macOS:
51 |
52 | $ umount
53 |
54 | ## Examples
55 |
56 | Mounting a PS2 IOPRP image:
57 |
58 | $ mkdir /tmp/romdir
59 | $ romdirfs ioprp15.img /tmp/romdir/
60 |
61 | $ mount | grep romdirfs
62 | romdirfs on /tmp/romdir type fuse.romdirfs (rw,nosuid,nodev,user=misfire)
63 |
64 | $ ls -l /tmp/romdir/
65 | total 0
66 | -r--r--r-- 1 root root 28533 1970-01-01 01:00 CDVDFSV
67 | -r--r--r-- 1 root root 35317 1970-01-01 01:00 CDVDMAN
68 | -r--r--r-- 1 root root 208 1970-01-01 01:00 EXTINFO
69 | -r--r--r-- 1 root root 9085 1970-01-01 01:00 FILEIO
70 | -r--r--r-- 1 root root 0 1970-01-01 01:00 RESET
71 | -r--r--r-- 1 root root 128 1970-01-01 01:00 ROMDIR
72 | -r--r--r-- 1 root root 9441 1970-01-01 01:00 SIFCMD
73 |
74 | $ hd /tmp/romdir/ROMDIR
75 | 00000000 52 45 53 45 54 00 00 00 00 00 08 00 00 00 00 00 |RESET...........|
76 | 00000010 52 4f 4d 44 49 52 00 00 00 00 44 00 80 00 00 00 |ROMDIR....D.....|
77 | 00000020 45 58 54 49 4e 46 4f 00 00 00 00 00 d0 00 00 00 |EXTINFO.........|
78 | 00000030 53 49 46 43 4d 44 00 00 00 00 28 00 e1 24 00 00 |SIFCMD....(..$..|
79 | 00000040 46 49 4c 45 49 4f 00 00 00 00 20 00 7d 23 00 00 |FILEIO.... .}#..|
80 | 00000050 43 44 56 44 4d 41 4e 00 00 00 1c 00 f5 89 00 00 |CDVDMAN.........|
81 | 00000060 43 44 56 44 46 53 56 00 00 00 20 00 75 6f 00 00 |CDVDFSV... .uo..|
82 | 00000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
83 | 00000080
84 |
85 | $ fusermount -u /tmp/romdir/
86 |
87 | Mounting a PS2 BIOS dump:
88 |
89 | $ romdirfs SCPH-30004R_BIOS_V4_PAL_160.BIN /tmp/romdir/
90 |
91 | $ ls /tmp/romdir/
92 | ADDDRV EXTINFO IOPBOOT MODLOAD ROMDRV SYSMEM VBLANK
93 | ATAD FILEIO IOPBTCON2 OSDCNF ROMVER TBIN VERSTR
94 | CDVDFSV FNTIMAGE IOPBTCONF OSDSND SBIN TESTMODE XCDVDFSV
95 | CDVDMAN FONTM KERNEL OSDSYS SECRMAN TESTSPU XCDVDMAN
96 | CLEARSPU HDDLOAD KROM PADMAN SIFCMD TEXIMAGE XFILEIO
97 | DMACMAN HDDOSD KROMG PS1DRV SIFINIT THREADMAN XLOADFILE
98 | EECONF HEAPLIB LIBSD PS2LOGO SIFMAN TIMEMANI XMCMAN
99 | EELOAD ICOIMAGE LOADCORE RDRAM SIO2MAN TIMEMANP XMCSERV
100 | EELOADCNF IGREETING LOADFILE REBOOT SNDIMAGE TPADMAN XMTAPMAN
101 | EENULL INTRMANI LOGO RESET SSBUSC TSIO2MAN XPADMAN
102 | EESYNC INTRMANP MCMAN RMRESET STDIO TZLIST XSIFCMD
103 | EXCEPMAN IOMAN MCSERV ROMDIR SYSCLIB UDNL XSIO2MAN
104 |
105 | $ cat /tmp/romdir/ROMVER
106 | 0160EC20010704
107 |
108 | $ fusermount -u /tmp/romdir/
109 |
110 | ## Disclaimer
111 |
112 | THIS PROGRAM IS NOT LICENSED, ENDORSED, NOR SPONSORED BY SONY COMPUTER
113 | ENTERTAINMENT, INC. ALL TRADEMARKS ARE PROPERTY OF THEIR RESPECTIVE OWNERS.
114 |
115 | romdirfs comes with ABSOLUTELY NO WARRANTY. It is covered by the GNU General
116 | Public License. Please see file `COPYING` for further information.
117 |
118 | ## Special Thanks
119 |
120 | Thanks goes out to the authors of the following programs:
121 |
122 | * RomDir by Alex Lau (http://alexlau.8k.com)
123 | * SSHFS by Miklos Seredi ()
124 | * WDFS by Jens M. Noedler ()
125 |
126 |
127 | [FUSE]: https://github.com/libfuse/libfuse
128 | [FUSE for macOS]: https://github.com/osxfuse/osxfuse
129 | [Rust spike]: https://github.com/mlafeldt/romdirfs/pull/2
130 |
--------------------------------------------------------------------------------
/romdir.c:
--------------------------------------------------------------------------------
1 | /*
2 | * romdir.c - read files from ROMDIR filesystem
3 | *
4 | * Copyright (C) 2009 Mathias Lafeldt
5 | *
6 | * This file is part of romdirfs.
7 | *
8 | * romdirfs is free software: you can redistribute it and/or modify
9 | * it under the terms of the GNU General Public License as published by
10 | * the Free Software Foundation, either version 3 of the License, or
11 | * (at your option) any later version.
12 | *
13 | * romdirfs is distributed in the hope that it will be useful,
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 | * GNU General Public License for more details.
17 | *
18 | * You should have received a copy of the GNU General Public License
19 | * along with romdirfs. If not, see .
20 | */
21 |
22 | #include
23 | #include
24 | #include
25 | #include
26 | #include
27 | #include
28 | #include
29 | #include "romdir.h"
30 |
31 | /**
32 | * roment_t - ROMDIR entry
33 | * @name: entry name
34 | * @xi_size: size of information in "EXTINFO" for this entry
35 | * @size: entry size
36 | *
37 | * This data structure represents one entry in the ROMDIR entry table. The
38 | * first entry is always "RESET", followed by "ROMDIR" and "EXTINFO".
39 | */
40 | typedef struct _roment {
41 | char name[10];
42 | uint16_t xi_size;
43 | uint32_t size;
44 | } roment_t;
45 |
46 | /**
47 | * strhash - String hashing function as specified by the ELF ABI.
48 | * @name: string to calculate hash from
49 | * @return: 32-bit hash value
50 | */
51 | uint32_t strhash(const char *name)
52 | {
53 | const uint8_t *p = (uint8_t*)name;
54 | uint32_t h = 0, g;
55 |
56 | while (*p) {
57 | h = (h << 4) + *p++;
58 | if ((g = (h & 0xf0000000)) != 0)
59 | h ^= (g >> 24);
60 | h &= ~g;
61 | }
62 |
63 | return h;
64 | }
65 |
66 | #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
67 |
68 | /*
69 | * Parse buffer @buf for ROMDIR entries and add them to @dir.
70 | */
71 | int romdir_read(const uint8_t *buf, size_t length, romdir_t *dir)
72 | {
73 | roment_t *entry = NULL;
74 | romfile_t *file = NULL, *xinfo = NULL;
75 | off_t i, off = 0, xoff = 0;
76 |
77 | /* find ROMDIR entry named "RESET" */
78 | for (i = 0; i < length; i += sizeof(roment_t)) {
79 | if (!strcmp((char*)&buf[i], "RESET")) {
80 | entry = (roment_t*)&buf[i];
81 | break;
82 | }
83 | }
84 |
85 | if (entry == NULL)
86 | return -1; /* RESET not found */
87 |
88 | /* add ROMDIR entries to queue */
89 | do {
90 | /* ignore "-" entries containing only zeros */
91 | if (entry->name[0] != '-') {
92 | file = (romfile_t*)calloc(1, sizeof(romfile_t));
93 | if (file == NULL)
94 | return -1;
95 |
96 | strcpy(file->name, entry->name);
97 | file->hash = strhash(file->name);
98 | file->offset = off;
99 | file->size = entry->size;
100 | if (file->size > 0)
101 | file->data = &buf[off];
102 |
103 | if (entry->xi_size) {
104 | file->xi_offset = xoff;
105 | file->xi_size = entry->xi_size;
106 | xoff += file->xi_size;
107 | }
108 |
109 | STAILQ_INSERT_TAIL(dir, file, node);
110 | }
111 |
112 | /* offset must be aligned to 16 bytes */
113 | off += ALIGN(entry->size, 0x10);
114 | } while ((++entry)->name[0]);
115 |
116 | /* get extinfo for each file */
117 | xinfo = romdir_find_file(dir, HASH_EXTINFO);
118 | if (xinfo != NULL) {
119 | STAILQ_FOREACH(file, dir, node) {
120 | if (file->hash != HASH_EXTINFO && file->xi_size > 0)
121 | file->xi_data = xinfo->data + file->xi_offset;
122 | }
123 | }
124 |
125 | return 0;
126 | }
127 |
128 | /*
129 | * Extract @file from ROMDIR fs to @path.
130 | */
131 | int romdir_extract(const romfile_t *file, const char *path)
132 | {
133 | char fullpath[1024] = { 0 };
134 | int fd, ret = 0;
135 |
136 | if (path != NULL) {
137 | strcpy(fullpath, path);
138 | strcat(fullpath, "/");
139 | }
140 |
141 | strcat(fullpath, file->name);
142 |
143 | fd = open(fullpath, O_CREAT | O_WRONLY | O_TRUNC, 0644);
144 | if (fd == -1)
145 | return -1;
146 |
147 | if (file->data != NULL)
148 | ret = write(fd, file->data, file->size);
149 |
150 | close(fd);
151 |
152 | return ret;
153 | }
154 |
155 | /*
156 | * Search @dir for file by @hash.
157 | */
158 | romfile_t *romdir_find_file(const romdir_t *dir, uint32_t hash)
159 | {
160 | romfile_t *file;
161 |
162 | STAILQ_FOREACH(file, dir, node) {
163 | if (hash == file->hash)
164 | return file;
165 | }
166 |
167 | return NULL;
168 | }
169 |
--------------------------------------------------------------------------------
/romdir.h:
--------------------------------------------------------------------------------
1 | /*
2 | * romdir.h - read files from ROMDIR filesystem
3 | *
4 | * Copyright (C) 2009 Mathias Lafeldt
5 | *
6 | * This file is part of romdirfs.
7 | *
8 | * romdirfs is free software: you can redistribute it and/or modify
9 | * it under the terms of the GNU General Public License as published by
10 | * the Free Software Foundation, either version 3 of the License, or
11 | * (at your option) any later version.
12 | *
13 | * romdirfs is distributed in the hope that it will be useful,
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 | * GNU General Public License for more details.
17 | *
18 | * You should have received a copy of the GNU General Public License
19 | * along with romdirfs. If not, see .
20 | */
21 |
22 | #ifndef _ROMDIR_H_
23 | #define _ROMDIR_H_
24 |
25 | #include
26 | #include
27 |
28 | /**
29 | * romfile_t - ROMDIR file information
30 | * @name: file name
31 | * @hash: file name hash for fast searching
32 | * @offset: file offset of data
33 | * @size: file size
34 | * @data: pointer to file data, or NULL if @size is 0
35 | * @xi_offset: offset of information in EXTINFO for this entry
36 | * @xi_size: size of information in EXTINFO for this entry
37 | * @xi_data: pointer to EXTINFO data, or NULL if @xi_size is 0
38 | *
39 | * This structure is used to hold the data and metadata of a ROMDIR file.
40 | */
41 | typedef struct _romfile {
42 | char name[10];
43 | uint32_t hash;
44 | off_t offset;
45 | size_t size;
46 | const uint8_t *data;
47 | off_t xi_offset;
48 | size_t xi_size;
49 | const uint8_t *xi_data;
50 |
51 | STAILQ_ENTRY(_romfile) node;
52 | } romfile_t;
53 |
54 | /* Queue to hold multiple ROMDIR files */
55 | typedef STAILQ_HEAD(_romdir, _romfile) romdir_t;
56 |
57 | /* Some well-known file name hashes */
58 | #define HASH_RESET 0x0056a7a4
59 | #define HASH_ROMDIR 0x057418e2
60 | #define HASH_EXTINFO 0x0ad8e2ef
61 | #define HASH_ROMVER 0x05742aa2
62 | #define HASH_OSDSYS 0x054798e3
63 |
64 | uint32_t strhash(const char *name);
65 | int romdir_read(const uint8_t *buf, size_t length, romdir_t *dir);
66 | int romdir_extract(const romfile_t *file, const char *path);
67 | romfile_t *romdir_find_file(const romdir_t *dir, uint32_t hash);
68 |
69 | #endif /* _ROMDIR_H_ */
70 |
--------------------------------------------------------------------------------
/romdirfs.c:
--------------------------------------------------------------------------------
1 | /*
2 | * romdirfs.c - ROMDIR filesystem in userspace
3 | *
4 | * Copyright (C) 2009 Mathias Lafeldt
5 | *
6 | * This file is part of romdirfs.
7 | *
8 | * romdirfs is free software: you can redistribute it and/or modify
9 | * it under the terms of the GNU General Public License as published by
10 | * the Free Software Foundation, either version 3 of the License, or
11 | * (at your option) any later version.
12 | *
13 | * romdirfs is distributed in the hope that it will be useful,
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 | * GNU General Public License for more details.
17 | *
18 | * You should have received a copy of the GNU General Public License
19 | * along with romdirfs. If not, see .
20 | */
21 |
22 | #include
23 | #include
24 | #include
25 | #include
26 | #include
27 | #define FUSE_USE_VERSION 26
28 | #include
29 | #include
30 | #include
31 | #include
32 | #include
33 | #include
34 | #include
35 | #include
36 | #include "romdir.h"
37 |
38 | #define APP_NAME "romdirfs"
39 | #define APP_NAME_BIG "ROMDIRFS"
40 | #define APP_VERSION "1.2"
41 |
42 | static romdir_t g_romdir = STAILQ_HEAD_INITIALIZER(g_romdir);
43 |
44 | struct config {
45 | char *progname;
46 | char *filename;
47 | int debug;
48 | };
49 |
50 | static struct config g_config = {
51 | .progname = NULL,
52 | .filename = NULL,
53 | .debug = 0
54 | };
55 |
56 | #define D_PRINTF(args...) \
57 | do { if (g_config.debug) fprintf(stderr, args); } while (0)
58 |
59 | #define HELP_TEXT \
60 | "usage: "APP_NAME" [options]\n" \
61 | " must be a PS2 IOPRP image or BIOS dump\n\n" \
62 | "ROMDIRFS options:\n" \
63 | " -V, --version print version\n" \
64 | " -h, --help print help\n" \
65 | " -D, -o romdirfs_debug print some debugging information\n\n"
66 |
67 | #define ROMDIRFS_OPT(t, p, v) { t, offsetof(struct config, p), v }
68 |
69 | enum {
70 | KEY_HELP,
71 | KEY_VERSION,
72 | KEY_DEBUG
73 | };
74 |
75 | static struct fuse_opt g_opts[] = {
76 | FUSE_OPT_KEY("-h", KEY_HELP),
77 | FUSE_OPT_KEY("--help", KEY_HELP),
78 | FUSE_OPT_KEY("-V", KEY_VERSION),
79 | FUSE_OPT_KEY("--version", KEY_VERSION),
80 | FUSE_OPT_KEY("-D", KEY_DEBUG),
81 | FUSE_OPT_KEY("romdirfs_debug", KEY_DEBUG),
82 | ROMDIRFS_OPT("-D", debug, 1),
83 | ROMDIRFS_OPT("romdirfs_debug", debug, 1),
84 | FUSE_OPT_END
85 | };
86 |
87 |
88 | /*
89 | * Filesystem operations supported by ROMDIRFS
90 | */
91 |
92 | static int romdirfs_getattr(const char *path, struct stat *stbuf)
93 | {
94 | romfile_t *file;
95 | uint32_t hash;
96 |
97 | memset(stbuf, 0, sizeof(struct stat));
98 |
99 | if (*path != '/')
100 | return -ENOENT;
101 | if (path[1] == '\0') { /* root dir */
102 | stbuf->st_mode = S_IFDIR | 0555;
103 | stbuf->st_nlink = 2;
104 | return 0;
105 | } else {
106 | hash = strhash(path + 1);
107 | file = romdir_find_file(&g_romdir, hash);
108 | if (file != NULL) {
109 | stbuf->st_mode = S_IFREG | 0444;
110 | stbuf->st_nlink = 1;
111 | stbuf->st_size = file->size;
112 | /* TODO set file time and user/group IDs */
113 | return 0;
114 | }
115 | }
116 |
117 | return -ENOENT;
118 | }
119 |
120 | static int romdirfs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
121 | off_t offset, struct fuse_file_info *fi)
122 | {
123 | romfile_t *file;
124 |
125 | if (strcmp(path, "/"))
126 | return -ENOENT;
127 |
128 | filler(buf, ".", NULL, 0);
129 | filler(buf, "..", NULL, 0);
130 |
131 | STAILQ_FOREACH(file, &g_romdir, node)
132 | filler(buf, file->name, NULL, 0);
133 |
134 | return 0;
135 | }
136 |
137 | static int romdirfs_open(const char *path, struct fuse_file_info *fi)
138 | {
139 | romfile_t *file;
140 | uint32_t hash;
141 |
142 | if (*path != '/')
143 | return -ENOENT;
144 |
145 | hash = strhash(path + 1);
146 | file = romdir_find_file(&g_romdir, hash);
147 | if (file != NULL) {
148 | if ((fi->flags & 3) != O_RDONLY)
149 | return -EACCES;
150 | else
151 | return 0;
152 | }
153 |
154 | return -ENOENT;
155 | }
156 |
157 | static int romdirfs_read(const char *path, char *buf, size_t size, off_t offset,
158 | struct fuse_file_info *fi)
159 | {
160 | romfile_t *file;
161 | uint32_t hash;
162 | size_t len;
163 |
164 | if (*path != '/')
165 | return -ENOENT;
166 |
167 | hash = strhash(path + 1);
168 | file = romdir_find_file(&g_romdir, hash);
169 | if (file != NULL) {
170 | len = file->size;
171 | if (offset < len){
172 | if (offset + size > len)
173 | size = len - offset;
174 | memcpy(buf, file->data + offset, size);
175 | } else {
176 | size = 0;
177 | }
178 | return size;
179 | }
180 |
181 | return -ENOENT;
182 | }
183 |
184 | static struct fuse_operations romdirfs_ops = {
185 | .getattr = romdirfs_getattr,
186 | .readdir = romdirfs_readdir,
187 | .open = romdirfs_open,
188 | .read = romdirfs_read
189 | };
190 |
191 | static int romdirfs_opt_proc(void *data, const char *arg, int key,
192 | struct fuse_args *outargs)
193 | {
194 | switch (key) {
195 | case KEY_HELP:
196 | fprintf(stderr, HELP_TEXT);
197 | fuse_opt_add_arg(outargs, "-ho");
198 | fuse_main(outargs->argc, outargs->argv, &romdirfs_ops, NULL);
199 | exit(1);
200 |
201 | case KEY_VERSION:
202 | fprintf(stderr, "%s version %s\n", APP_NAME_BIG, APP_VERSION);
203 | fuse_opt_add_arg(outargs, "--version");
204 | fuse_main(outargs->argc, outargs->argv, &romdirfs_ops, NULL);
205 | exit(0);
206 |
207 | case KEY_DEBUG:
208 | /* add -f for foreground operation */
209 | return fuse_opt_add_arg(outargs, "-f");
210 |
211 | case FUSE_OPT_KEY_OPT:
212 | return 1;
213 |
214 | case FUSE_OPT_KEY_NONOPT:
215 | if (g_config.filename == NULL) {
216 | g_config.filename = strdup(arg);
217 | return 0;
218 | }
219 | return 1;
220 |
221 | default:
222 | fprintf(stderr, "%s: unknown option '%s'\n",
223 | g_config.progname, arg);
224 | exit(1);
225 | }
226 |
227 | return 0;
228 | }
229 |
230 | int main(int argc, char *argv[])
231 | {
232 | struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
233 | romfile_t *file = NULL;
234 | struct stat sb;
235 | uint8_t *buf = NULL;
236 | int fd, ret;
237 |
238 | g_config.progname = argv[0];
239 |
240 | if (fuse_opt_parse(&args, &g_config, g_opts, romdirfs_opt_proc) == -1)
241 | exit(1);
242 |
243 | if (g_config.filename == NULL) {
244 | fprintf(stderr, "%s: missing file\n", g_config.progname);
245 | exit(1);
246 | }
247 |
248 | fd = open(g_config.filename, O_RDONLY);
249 | if (fd == -1) {
250 | fprintf(stderr, "Error: could not open file '%s'\n",
251 | g_config.filename);
252 | exit(1);
253 | }
254 | if (fstat(fd, &sb) == -1) {
255 | perror("fstat");
256 | exit(1);
257 | }
258 | if (!S_ISREG(sb.st_mode)) {
259 | fprintf(stderr, "Error: %s is not a file\n", g_config.filename);
260 | exit(1);
261 | }
262 | if (!sb.st_size || sb.st_size > (4*1024*1024)) { /* BIOS is 4MB in size */
263 | fprintf(stderr, "Error: invalid file size\n");
264 | exit(1);
265 | }
266 |
267 | #ifdef USE_MMAP
268 | /* map file into memory */
269 | buf = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0);
270 | if (buf == MAP_FAILED) {
271 | perror("mmap");
272 | exit(1);
273 | }
274 | #else
275 | /* read file contents into allocated memory */
276 | buf = malloc(sb.st_size);
277 | if (buf == NULL) {
278 | perror("malloc");
279 | exit(1);
280 | }
281 | if (read(fd, buf, sb.st_size) != sb.st_size) {
282 | perror("read");
283 | exit(1);
284 | }
285 | #endif
286 | if (close(fd) == -1) {
287 | perror("close");
288 | exit(1);
289 | }
290 |
291 | /* get ROMDIR entries */
292 | STAILQ_INIT(&g_romdir);
293 | ret = romdir_read(buf, sb.st_size, &g_romdir);
294 | if (ret < 0) {
295 | fprintf(stderr, "Error: could not read ROMDIR entries\n");
296 | exit(1);
297 | }
298 |
299 | D_PRINTF("ROMDIR entries:\n");
300 | D_PRINTF("%-10s %-8s %-17s %8s %-8s %8s\n",
301 | "name", "hash", "offset", "size", "xi_off", "xi_size");
302 | STAILQ_FOREACH(file, &g_romdir, node) {
303 | D_PRINTF("%-10s %08x %08x-%08x %8i %08x %8i\n",
304 | file->name, file->hash, (uint32_t)file->offset,
305 | (uint32_t)(file->offset + file->size),
306 | (uint32_t)file->size, (uint32_t)file->xi_offset,
307 | (uint32_t)file->xi_size);
308 | #if 0
309 | if (file->xi_data != NULL) {
310 | int i;
311 | for (i = 0; i < file->xi_size; i++)
312 | D_PRINTF("%02x ", file->xi_data[i]);
313 | D_PRINTF("\n");
314 | }
315 | #endif
316 | }
317 |
318 | /* use single-threaded mode */
319 | fuse_opt_add_arg(&args, "-s");
320 |
321 | /* do FUSE magic */
322 | ret = fuse_main(args.argc, args.argv, &romdirfs_ops, NULL);
323 |
324 | D_PRINTF("fuse_main() returned %i\n", ret);
325 | D_PRINTF("clean up...\n");
326 |
327 | STAILQ_FOREACH(file, &g_romdir, node) {
328 | STAILQ_REMOVE(&g_romdir, file, _romfile, node);
329 | free(file);
330 | }
331 |
332 | #ifdef USE_MMAP
333 | if (munmap(buf, sb.st_size) == -1) {
334 | perror("munmap"),
335 | exit(1);
336 | }
337 | #else
338 | free(buf);
339 | #endif
340 | free(g_config.filename);
341 | fuse_opt_free_args(&args);
342 |
343 | return ret;
344 | }
345 |
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