├── COPYING ├── LICENSE ├── README.md └── genfstab /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. By contrast, the GNU General Public 13 | License is intended to guarantee your freedom to share and change free 14 | software--to make sure the software is free for all its users. This 15 | General Public License applies to most of the Free Software 16 | Foundation's software and to any other program whose authors commit to 17 | using it. (Some other Free Software Foundation software is covered by 18 | the GNU Lesser General Public License instead.) You can apply it to 19 | your programs, too. 20 | 21 | When we speak of free software, we are referring to freedom, not 22 | price. Our General Public Licenses are designed to make sure that you 23 | have the freedom to distribute copies of free software (and charge for 24 | this service if you wish), that you receive source code or can get it 25 | if you want it, that you can change the software or use pieces of it 26 | in new free programs; and that you know you can do these things. 27 | 28 | To protect your rights, we need to make restrictions that forbid 29 | anyone to deny you these rights or to ask you to surrender the rights. 30 | These restrictions translate to certain responsibilities for you if you 31 | distribute copies of the software, or if you modify it. 32 | 33 | For example, if you distribute copies of such a program, whether 34 | gratis or for a fee, you must give the recipients all the rights that 35 | you have. You must make sure that they, too, receive or can get the 36 | source code. 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You may copy and distribute verbatim copies of the Program's 80 | source code as you receive it, in any medium, provided that you 81 | conspicuously and appropriately publish on each copy an appropriate 82 | copyright notice and disclaimer of warranty; keep intact all the 83 | notices that refer to this License and to the absence of any warranty; 84 | and give any other recipients of the Program a copy of this License 85 | along with the Program. 86 | 87 | You may charge a fee for the physical act of transferring a copy, and 88 | you may at your option offer warranty protection in exchange for a fee. 89 | 90 | 2. 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Any attempt 174 | otherwise to copy, modify, sublicense or distribute the Program is 175 | void, and will automatically terminate your rights under this License. 176 | However, parties who have received copies, or rights, from you under 177 | this License will not have their licenses terminated so long as such 178 | parties remain in full compliance. 179 | 180 | 5. You are not required to accept this License, since you have not 181 | signed it. However, nothing else grants you permission to modify or 182 | distribute the Program or its derivative works. These actions are 183 | prohibited by law if you do not accept this License. Therefore, by 184 | modifying or distributing the Program (or any work based on the 185 | Program), you indicate your acceptance of this License to do so, and 186 | all its terms and conditions for copying, distributing or modifying 187 | the Program or works based on it. 188 | 189 | 6. 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If you cannot 202 | distribute so as to satisfy simultaneously your obligations under this 203 | License and any other pertinent obligations, then as a consequence you 204 | may not distribute the Program at all. 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In such case, this License incorporates 235 | the limitation as if written in the body of this License. 236 | 237 | 9. The Free Software Foundation may publish revised and/or new versions 238 | of the General Public License from time to time. Such new versions will 239 | be similar in spirit to the present version, but may differ in detail to 240 | address new problems or concerns. 241 | 242 | Each version is given a distinguishing version number. If the Program 243 | specifies a version number of this License which applies to it and "any 244 | later version", you have the option of following the terms and conditions 245 | either of that version or of any later version published by the Free 246 | Software Foundation. If the Program does not specify a version number of 247 | this License, you may choose any version ever published by the Free Software 248 | Foundation. 249 | 250 | 10. If you wish to incorporate parts of the Program into other free 251 | programs whose distribution conditions are different, write to the author 252 | to ask for permission. For software which is copyrighted by the Free 253 | Software Foundation, write to the Free Software Foundation; we sometimes 254 | make exceptions for this. Our decision will be guided by the two goals 255 | of preserving the free status of all derivatives of our free software and 256 | of promoting the sharing and reuse of software generally. 257 | 258 | NO WARRANTY 259 | 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278 | POSSIBILITY OF SUCH DAMAGES. 279 | 280 | END OF TERMS AND CONDITIONS 281 | 282 | How to Apply These Terms to Your New Programs 283 | 284 | If you develop a new program, and you want it to be of the greatest 285 | possible use to the public, the best way to achieve this is to make it 286 | free software which everyone can redistribute and change under these terms. 287 | 288 | To do so, attach the following notices to the program. It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | 294 | Copyright (C) 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | , 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 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 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # genfstab 2 | 3 | This is a standalone version of the `genfstab` tool found in [Arch Linux](https://www.archlinux.org/) 4 | 5 | Forked from [arch-install-scripts](https://projects.archlinux.org/arch-install-scripts.git/) 6 | 7 | Some modifications regarding temporary filesystems may be required. 8 | 9 | Tested on Fedora 28, Debian 9, CentOS 7 10 | 11 | ## License 12 | 13 | See COPYING for details. 14 | -------------------------------------------------------------------------------- /genfstab: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | shopt -s extglob 4 | 5 | # generated from util-linux source: libmount/src/utils.c 6 | declare -A pseudofs_types=([anon_inodefs]=1 7 | [autofs]=1 8 | [bdev]=1 9 | [bpf]=1 10 | [binfmt_misc]=1 11 | [cgroup]=1 12 | [cgroup2]=1 13 | [configfs]=1 14 | [cpuset]=1 15 | [debugfs]=1 16 | [devfs]=1 17 | [devpts]=1 18 | [devtmpfs]=1 19 | [dlmfs]=1 20 | [efivarfs]=1 21 | [fuse.gvfs-fuse-daemon]=1 22 | [fusectl]=1 23 | [hugetlbfs]=1 24 | [mqueue]=1 25 | [nfsd]=1 26 | [none]=1 27 | [pipefs]=1 28 | [proc]=1 29 | [pstore]=1 30 | [ramfs]=1 31 | [rootfs]=1 32 | [rpc_pipefs]=1 33 | [securityfs]=1 34 | [sockfs]=1 35 | [spufs]=1 36 | [sysfs]=1 37 | [tmpfs]=1) 38 | 39 | # generated from: pkgfile -vbr '/fsck\..+' | awk -F. '{ print $NF }' | sort 40 | declare -A fsck_types=([cramfs]=1 41 | [exfat]=1 42 | [ext2]=1 43 | [ext3]=1 44 | [ext4]=1 45 | [ext4dev]=1 46 | [jfs]=1 47 | [minix]=1 48 | [msdos]=1 49 | [reiserfs]=1 50 | [vfat]=1 51 | [xfs]=1) 52 | 53 | out() { printf "$1 $2\n" "${@:3}"; } 54 | error() { out "==> ERROR:" "$@"; } >&2 55 | warning() { out "==> WARNING:" "$@"; } >&2 56 | msg() { out "==>" "$@"; } 57 | msg2() { out " ->" "$@";} 58 | die() { error "$@"; exit 1; } 59 | 60 | ignore_error() { 61 | "$@" 2>/dev/null 62 | return 0 63 | } 64 | 65 | in_array() { 66 | local i 67 | for i in "${@:2}"; do 68 | [[ $1 = "$i" ]] && return 0 69 | done 70 | return 1 71 | } 72 | 73 | chroot_add_mount() { 74 | mount "$@" && CHROOT_ACTIVE_MOUNTS=("$2" "${CHROOT_ACTIVE_MOUNTS[@]}") 75 | } 76 | 77 | chroot_maybe_add_mount() { 78 | local cond=$1; shift 79 | if eval "$cond"; then 80 | chroot_add_mount "$@" 81 | fi 82 | } 83 | 84 | chroot_setup() { 85 | CHROOT_ACTIVE_MOUNTS=() 86 | [[ $(trap -p EXIT) ]] && die '(BUG): attempting to overwrite existing EXIT trap' 87 | trap 'chroot_teardown' EXIT 88 | 89 | chroot_add_mount proc "$1/proc" -t proc -o nosuid,noexec,nodev && 90 | chroot_add_mount sys "$1/sys" -t sysfs -o nosuid,noexec,nodev,ro && 91 | ignore_error chroot_maybe_add_mount "[[ -d '$1/sys/firmware/efi/efivars' ]]" \ 92 | efivarfs "$1/sys/firmware/efi/efivars" -t efivarfs -o nosuid,noexec,nodev && 93 | chroot_add_mount udev "$1/dev" -t devtmpfs -o mode=0755,nosuid && 94 | chroot_add_mount devpts "$1/dev/pts" -t devpts -o mode=0620,gid=5,nosuid,noexec && 95 | chroot_add_mount shm "$1/dev/shm" -t tmpfs -o mode=1777,nosuid,nodev && 96 | chroot_add_mount /run "$1/run" --bind && 97 | chroot_add_mount tmp "$1/tmp" -t tmpfs -o mode=1777,strictatime,nodev,nosuid 98 | } 99 | 100 | chroot_teardown() { 101 | if (( ${#CHROOT_ACTIVE_MOUNTS[@]} )); then 102 | umount "${CHROOT_ACTIVE_MOUNTS[@]}" 103 | fi 104 | unset CHROOT_ACTIVE_MOUNTS 105 | } 106 | 107 | try_cast() ( 108 | _=$(( $1#$2 )) 109 | ) 2>/dev/null 110 | 111 | valid_number_of_base() { 112 | local base=$1 len=${#2} i= 113 | 114 | for (( i = 0; i < len; i++ )); do 115 | try_cast "$base" "${2:i:1}" || return 1 116 | done 117 | 118 | return 0 119 | } 120 | 121 | mangle() { 122 | local i= chr= out= 123 | local {a..f}= {A..F}= 124 | 125 | for (( i = 0; i < ${#1}; i++ )); do 126 | chr=${1:i:1} 127 | case $chr in 128 | [[:space:]\\]) 129 | printf -v chr '%03o' "'$chr" 130 | out+=\\ 131 | ;; 132 | esac 133 | out+=$chr 134 | done 135 | 136 | printf '%s' "$out" 137 | } 138 | 139 | unmangle() { 140 | local i= chr= out= len=$(( ${#1} - 4 )) 141 | local {a..f}= {A..F}= 142 | 143 | for (( i = 0; i < len; i++ )); do 144 | chr=${1:i:1} 145 | case $chr in 146 | \\) 147 | if valid_number_of_base 8 "${1:i+1:3}" || 148 | valid_number_of_base 16 "${1:i+1:3}"; then 149 | printf -v chr '%b' "${1:i:4}" 150 | (( i += 3 )) 151 | fi 152 | ;; 153 | esac 154 | out+=$chr 155 | done 156 | 157 | printf '%s' "$out${1:i}" 158 | } 159 | 160 | optstring_match_option() { 161 | local candidate pat patterns 162 | 163 | IFS=, read -ra patterns <<<"$1" 164 | for pat in "${patterns[@]}"; do 165 | if [[ $pat = *=* ]]; then 166 | # "key=val" will only ever match "key=val" 167 | candidate=$2 168 | else 169 | # "key" will match "key", but also "key=anyval" 170 | candidate=${2%%=*} 171 | fi 172 | 173 | [[ $pat = "$candidate" ]] && return 0 174 | done 175 | 176 | return 1 177 | } 178 | 179 | optstring_remove_option() { 180 | local o options_ remove=$2 IFS=, 181 | 182 | read -ra options_ <<<"${!1}" 183 | 184 | for o in "${!options_[@]}"; do 185 | optstring_match_option "$remove" "${options_[o]}" && unset 'options_[o]' 186 | done 187 | 188 | declare -g "$1=${options_[*]}" 189 | } 190 | 191 | optstring_normalize() { 192 | local o options_ norm IFS=, 193 | 194 | read -ra options_ <<<"${!1}" 195 | 196 | # remove empty fields 197 | for o in "${options_[@]}"; do 198 | [[ $o ]] && norm+=("$o") 199 | done 200 | 201 | # avoid empty strings, reset to "defaults" 202 | declare -g "$1=${norm[*]:-defaults}" 203 | } 204 | 205 | optstring_append_option() { 206 | if ! optstring_has_option "$1" "$2"; then 207 | declare -g "$1=${!1},$2" 208 | fi 209 | 210 | optstring_normalize "$1" 211 | } 212 | 213 | optstring_prepend_option() { 214 | local options_=$1 215 | 216 | if ! optstring_has_option "$1" "$2"; then 217 | declare -g "$1=$2,${!1}" 218 | fi 219 | 220 | optstring_normalize "$1" 221 | } 222 | 223 | optstring_get_option() { 224 | local opts o 225 | 226 | IFS=, read -ra opts <<<"${!1}" 227 | for o in "${opts[@]}"; do 228 | if optstring_match_option "$2" "$o"; then 229 | declare -g "$o" 230 | return 0 231 | fi 232 | done 233 | 234 | return 1 235 | } 236 | 237 | optstring_has_option() { 238 | local "${2%%=*}" 239 | 240 | optstring_get_option "$1" "$2" 241 | } 242 | 243 | dm_name_for_devnode() { 244 | read dm_name <"/sys/class/block/${1#/dev/}/dm/name" 245 | if [[ $dm_name ]]; then 246 | printf '/dev/mapper/%s' "$dm_name" 247 | else 248 | # don't leave the caller hanging, just print the original name 249 | # along with the failure. 250 | error 'Failed to resolve device mapper name for: %s' "$1" 251 | fi 252 | } 253 | 254 | fstype_is_pseudofs() { 255 | (( pseudofs_types["$1"] )) 256 | } 257 | 258 | fstype_has_fsck() { 259 | (( fsck_types["$1"] )) 260 | } 261 | 262 | 263 | write_source() { 264 | local src=$1 spec= label= uuid= comment=() 265 | 266 | label=$(lsblk -rno LABEL "$1" 2>/dev/null) 267 | uuid=$(lsblk -rno UUID "$1" 2>/dev/null) 268 | 269 | # bind mounts do not have a UUID! 270 | 271 | case $bytag in 272 | '') 273 | [[ $uuid ]] && comment=("UUID=$uuid") 274 | [[ $label ]] && comment+=("LABEL=$(mangle "$label")") 275 | ;; 276 | LABEL) 277 | spec=$label 278 | [[ $uuid ]] && comment=("$src" "UUID=$uuid") 279 | ;; 280 | UUID) 281 | spec=$uuid 282 | comment=("$src") 283 | [[ $label ]] && comment+=("LABEL=$(mangle "$label")") 284 | ;; 285 | *) 286 | [[ $uuid ]] && comment=("$1" "UUID=$uuid") 287 | [[ $label ]] && comment+=("LABEL=$(mangle "$label")") 288 | [[ $bytag ]] && spec=$(lsblk -rno "$bytag" "$1" 2>/dev/null) 289 | ;; 290 | esac 291 | 292 | [[ $comment ]] && printf '# %s\n' "${comment[*]}" 293 | 294 | if [[ $spec ]]; then 295 | printf '%-20s' "$bytag=$(mangle "$spec")" 296 | else 297 | printf '%-20s' "$(mangle "$src")" 298 | fi 299 | } 300 | 301 | optstring_apply_quirks() { 302 | local varname=$1 fstype=$2 303 | 304 | # SELinux displays a 'seclabel' option in /proc/self/mountinfo. We can't know 305 | # if the system we're generating the fstab for has any support for SELinux (as 306 | # one might install Arch from a Fedora environment), so let's remove it. 307 | optstring_remove_option "$varname" seclabel 308 | 309 | # Prune 'relatime' option for any pseudofs. This seems to be a rampant 310 | # default which the kernel often exports even if the underlying filesystem 311 | # doesn't support it. Example: https://bugs.archlinux.org/task/54554. 312 | if awk -v fstype="$fstype" '$1 == fstype { exit 1 }' /proc/filesystems; then 313 | optstring_remove_option "$varname" relatime 314 | fi 315 | 316 | case $fstype in 317 | f2fs) 318 | # These are Kconfig options for f2fs. Kernels supporting the options will 319 | # only provide the negative versions of these (e.g. noacl), and vice versa 320 | # for kernels without support. 321 | optstring_remove_option "$varname" noacl,acl,nouser_xattr,user_xattr 322 | ;; 323 | vfat) 324 | # Before Linux v3.8, "cp" is prepended to the value of the codepage. 325 | if optstring_get_option "$varname" codepage && [[ $codepage = cp* ]]; then 326 | optstring_remove_option "$varname" codepage 327 | optstring_append_option "$varname" "codepage=${codepage#cp}" 328 | fi 329 | ;; 330 | esac 331 | } 332 | 333 | usage() { 334 | cat < Restrict output to mountpoints matching the prefix FILTER 339 | -L Use labels for source identifiers (shortcut for -t LABEL) 340 | -p Exclude pseudofs mounts (default behavior) 341 | -P Include pseudofs mounts 342 | -t Use TAG for source identifiers (TAG should be one of: LABEL, 343 | UUID, PARTLABEL, PARTUUID) 344 | -U Use UUIDs for source identifiers (shortcut for -t UUID) 345 | 346 | -h Print this help message 347 | 348 | genfstab generates output suitable for addition to an fstab file based on the 349 | devices mounted under the mountpoint specified by the given root. 350 | 351 | EOF 352 | } 353 | 354 | if [[ -z $1 || $1 = @(-h|--help) ]]; then 355 | usage 356 | exit $(( $# ? 0 : 1 )) 357 | fi 358 | 359 | while getopts ':f:LPpt:U' flag; do 360 | case $flag in 361 | L) 362 | bytag=LABEL 363 | ;; 364 | U) 365 | bytag=UUID 366 | ;; 367 | f) 368 | prefixfilter=$OPTARG 369 | ;; 370 | P) 371 | pseudofs=1 372 | ;; 373 | p) 374 | pseudofs=0 375 | ;; 376 | t) 377 | bytag=${OPTARG^^} 378 | ;; 379 | :) 380 | die '%s: option requires an argument -- '\''%s'\' "${0##*/}" "$OPTARG" 381 | ;; 382 | ?) 383 | die '%s: invalid option -- '\''%s'\' "${0##*/}" "$OPTARG" 384 | ;; 385 | esac 386 | done 387 | shift $(( OPTIND - 1 )) 388 | 389 | (( $# )) || die "No root directory specified" 390 | root=$(realpath -mL "$1"); shift 391 | 392 | if ! mountpoint -q "$root"; then 393 | die "$root is not a mountpoint" 394 | fi 395 | 396 | # handle block devices 397 | findmnt -Recvruno SOURCE,TARGET,FSTYPE,OPTIONS,FSROOT "$root" | 398 | while read -r src target fstype opts fsroot; do 399 | if (( !pseudofs )) && fstype_is_pseudofs "$fstype"; then 400 | continue 401 | fi 402 | 403 | [[ $target = "$prefixfilter"* ]] || continue 404 | 405 | # default 5th and 6th columns 406 | dump=0 pass=2 407 | 408 | src=$(unmangle "$src") 409 | target=$(unmangle "$target") 410 | target=${target#$root} 411 | 412 | if (( !foundroot )) && findmnt "$src" "$root" >/dev/null; then 413 | # this is root. we can't possibly have more than one... 414 | pass=1 foundroot=1 415 | fi 416 | 417 | # if there's no fsck tool available, then only pass=0 makes sense. 418 | if ! fstype_has_fsck "$fstype"; then 419 | pass=0 420 | fi 421 | 422 | if [[ $fsroot != / && $fstype != btrfs ]]; then 423 | # it's a bind mount 424 | src=$(findmnt -funcevo TARGET "$src")$fsroot 425 | if [[ $src -ef $target ]]; then 426 | # hrmm, this is weird. we're probably looking at a file or directory 427 | # that was bound into a chroot from the host machine. Ignore it, 428 | # because this won't actually be a valid mount. Worst case, the user 429 | # just re-adds it. 430 | continue 431 | fi 432 | fstype=none 433 | opts+=,bind 434 | pass=0 435 | fi 436 | 437 | # filesystem quirks 438 | case $fstype in 439 | fuseblk) 440 | # well-behaved FUSE filesystems will report themselves as fuse.$fstype. 441 | # this is probably NTFS-3g, but let's just make sure. 442 | if ! newtype=$(lsblk -no FSTYPE "$src") || [[ -z $newtype ]]; then 443 | # avoid blanking out fstype, leading to an invalid fstab 444 | error 'Failed to derive real filesystem type for FUSE device on %s' "$target" 445 | else 446 | fstype=$newtype 447 | fi 448 | ;; 449 | esac 450 | 451 | optstring_apply_quirks "opts" "$fstype" 452 | 453 | # write one line 454 | write_source "$src" 455 | printf '\t%-10s' "/$(mangle "${target#/}")" "$fstype" "$opts" 456 | printf '\t%s %s' "$dump" "$pass" 457 | printf '\n\n' 458 | done 459 | 460 | # handle swaps devices 461 | { 462 | # ignore header 463 | read 464 | 465 | while read -r device type _ _ prio; do 466 | options=defaults 467 | if (( prio >= 0 )); then 468 | options+=,pri=$prio 469 | fi 470 | 471 | # skip files marked deleted by the kernel 472 | [[ $device = *'\040(deleted)' ]] && continue 473 | 474 | if [[ $type = file ]]; then 475 | printf '%-20s' "${device#${root%/}}" 476 | elif [[ $device = /dev/dm-+([0-9]) ]]; then 477 | # device mapper doesn't allow characters we need to worry 478 | # about being mangled, and it does the escaping of dashes 479 | # for us in sysfs. 480 | write_source "$(dm_name_for_devnode "$device")" 481 | else 482 | write_source "$(unmangle "$device")" 483 | fi 484 | 485 | printf '\t%-10s\t%-10s\t%-10s\t0 0\n\n' 'none' 'swap' "$options" 486 | done 487 | }