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2023-01-03xxd: use bb_simple_perror_msg... where appropriateDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-01-02xxd: fix use of non-initialized dataDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-12-14more: accept and ignore -eNatanael Copa
Accept and ignore -e which is specified in POSIX. https://pubs.opengroup.org/onlinepubs/9699919799/utilities/more.html Signed-off-by: Natanael Copa <ncopa@alpinelinux.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-12-08xxd: fix typo in trivial usageBrandon Maier
Signed-off-by: Brandon Maier <brandon.maier@collins.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-11-29Remove "select PLATFORM_LINUX"Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-11-29Fix non-Linux buildsSamuel Thibault
Various tools are Linuxish and should thus only attempted to build on Linux only. Some features are also Linux-only. Also, libresolv is used on all GNU platforms, notably GNU/Hurd and GNU/kfreeBSD. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-11-16fbset: support setting pixel clock rateDario Binacchi
Only in case the FEATURE_FBSET_FANCY configuration is enabled. function old new delta fbset_main 733 766 +33 Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-11-16fbset: abort on not handled optionsDario Binacchi
Not all options are actually implemented. In this case, return a message and an error code to make it clear that the requested command has not been executed. function old new delta .rodata 105200 105224 +24 fbset_main 747 733 -14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 24/-14) Total: 10 bytes Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-08-22xxd -r: handle offsetsDenys Vlasenko
function old new delta xxd_main 1076 1439 +363 .rodata 105239 105251 +12 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 375/0) Total: 375 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-08-22xxd -r: without -p, stop at more than one whitespace, closes 14786Denys Vlasenko
function old new delta xxd_main 888 1076 +188 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-02seedrng: it's not a part of util-linux, move to miscutilsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01seedrng: manually inline seed_rngBernhard Reutner-Fischer
We can now remove a separate buffer function old new delta seedrng_main 930 884 -46 Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01seedrng: shorten --help, assorted small cleanupsDenys Vlasenko
function old new delta packed_usage 34295 34290 -5 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01seedrng: reduce MAX_SEED_LEN from 512 to 256Denys Vlasenko
As proposed by Jason. getrandom() is more likely to block on reads larger than this. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01seedrng: do not hash lengths, they are very predictableDenys Vlasenko
function old new delta seedrng_main 982 930 -52 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01seedrng: code shrinkDenys Vlasenko
function old new delta seedrng_main 994 982 -12 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01seedrng: explain why we need locking and fsync'ingDenys Vlasenko
Also, do not test for locking errors: on Linux, they do not happen. function old new delta .rodata 104900 104878 -22 seedrng_main 1022 994 -28 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01seedrng: remove redundant assignmentDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01seedrng: re-add fsync after unlink, and explain its purposeDenys Vlasenko
function old new delta seedrng_main 1003 1022 +19 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30seedrng: include fiel/dir names in error messagesDenys Vlasenko
function old new delta .rodata 104898 104900 +2 seedrng_main 1011 1003 -8 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-8) Total: -6 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30seedrng: use more xfuncs where appropriateDenys Vlasenko
function old new delta .rodata 104929 104898 -31 seedrng_main 1050 1011 -39 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30seedrng: code shrinkDenys Vlasenko
Struct initializers do this double init: ># util-linux/seedrng.c:88: struct pollfd random_fd = { movl $0, 132(%esp) #, random_fd movl $0, 136(%esp) #, random_fd ... ># util-linux/seedrng.c:88: struct pollfd random_fd = { movl %eax, 140(%esp) # _110, random_fd.fd movw $1, 144(%esp) #, random_fd.events and close(random_fd.fd) needs to pull the item from the stack: pushl 132(%esp) # random_fd.fd call close # function old new delta seedrng_main 1076 1050 -26 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30seedrng: simplify read_new_seed() to not have error returnDenys Vlasenko
gcc in fact detects this and does this transformation when generating code - no object code changes. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30seedrng: prepare read_new_seed() to not need a "success" retvalDenys Vlasenko
We do not expect /dev/[u]random to be not openable/readable. If they are, just bail out (something is obviously very wrong). function old new delta seedrng_main 1077 1076 -1 .rodata 104939 104929 -10 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30seedrng: do not try to continue on unexpected errors (just exit)Denys Vlasenko
function old new delta .rodata 104946 104938 -8 seedrng_main 1225 1077 -148 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-156) Total: -156 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27seedrng: chdir to the SEED_DIRECTORY - avoid concat_path_file'sDenys Vlasenko
function old new delta seedrng_main 1273 1225 -48 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27seedrng: shorten stringsDenys Vlasenko
function old new delta .rodata 104894 104876 -18 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27seedrng: remove unnecessary zero-filling of local variablesDenys Vlasenko
function old new delta seedrng_main 1292 1273 -19 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27seedrng: remove unnecessary zero-filling of local variablesDenys Vlasenko
function old new delta seedrng_main 1323 1292 -31 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27seedrng: shrink --help textDenys Vlasenko
function old new delta packed_usage 34280 34253 -27 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-24seedrng: prune header includesJason A. Donenfeld
Remove redundant includes. We have platform specific handling in libbb.h and platform.h so we can handle quirks in a central place. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-24seedrng: code-golf even smallerJason A. Donenfeld
Since we're passing 0 as the timeout, we don't need safe_poll. Remove cleanup at end of program, since OS does that, which lets us simplify control flow. Factor repeated function calls into ternary loop. function old new delta seedrng_main 1061 1459 +398 seed_from_file_if_exists 468 - -468 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/0 up/down: 398/-468) Total: -70 bytes text data bss dec hex filename 1052781 16515 1816 1071112 105808 busybox_old 1052711 16515 1816 1071042 1057c2 busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20seedrng: compress format strings with %s argumentsJason A. Donenfeld
- Avoid an xstrdup call with seed_dir. - Compress format strings with %s arguments. - Open /dev/urandom for add entropy ioctl rather than /dev/random, so that /dev/random is only used for the already-sightly-flawed poll() check for creditability. function old new delta seedrng_main 948 958 +10 seed_from_file_if_exists 410 417 +7 .rodata 108338 108206 -132 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 17/-132) Total: -115 bytes text data bss dec hex filename 975829 4227 1816 981872 efb70 busybox_old 975714 4227 1816 981757 efafd busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20seedrng: avoid needless runtime strlen() callJason A. Donenfeld
- Avoid needless runtime strlen() call, bloating binary. - Replace failed seed string with series of nulls. function old new delta .rodata 108350 108338 -12 static.seedrng_prefix 26 - -26 seedrng_main 1000 948 -52 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 0/2 up/down: 0/-90) Total: -90 bytes text data bss dec hex filename 975919 4227 1816 981962 efbca busybox_old 975829 4227 1816 981872 efb70 busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20seedrng: use predefined strings where possibleJason A. Donenfeld
- Use predefined strings where possible. - Open /dev/random with O_RDONLY for ioctl(). function old new delta seed_from_file_if_exists 413 410 -3 .rodata 108407 108350 -57 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-60) Total: -60 bytes text data bss dec hex filename 975979 4227 1816 982022 efc06 busybox_old 975919 4227 1816 981962 efbca busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20seedrng: further reduce sizeJason A. Donenfeld
- Remove all games with errno to further reduce code size. - Combine error messages that don't benefit from being separated. - Lock directory fd instead of separate file. function old new delta static.longopts 38 26 -12 seed_from_file_if_exists 426 413 -13 packed_usage 34519 34480 -39 .rodata 108484 108407 -77 seedrng_main 1088 1000 -88 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/5 up/down: 0/-229) Total: -229 bytes text data bss dec hex filename 976208 4227 1816 982251 efceb busybox_old 975979 4227 1816 982022 efc06 busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20seedrng: remove some global variablesJason A. Donenfeld
- Remove global variables and pass dfd by value, opened once instead of twice, which shaves off some more bytes. function old new delta seedrng_main 1086 1088 +2 seed_dir 8 - -8 non_creditable_seed 8 - -8 lock_file 8 - -8 creditable_seed 8 - -8 seed_from_file_if_exists 456 426 -30 ------------------------------------------------------------------------------ (add/remove: 0/4 grow/shrink: 1/1 up/down: 2/-62) Total: -60 bytes text data bss dec hex filename 976236 4227 1848 982311 efd27 busybox_old 976208 4227 1816 982251 efceb busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20seedrng: hoist bb_strtoul out of min/maxJason A. Donenfeld
- Hoist bb_strtoul out of min/max to prevent quadruple evaluation. - Don't use separate variables for boottime/realtime. - Make use of ENABLE_FEATURE_CLEAN_UP where appropriate. - Order hash initialization after lock taking per Bernhard's taste. - Add comment description of theory of operation. function old new delta seed_from_file_if_exists 533 456 -77 seedrng_main 1218 1086 -132 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-209) Total: -209 bytes text data bss dec hex filename 976445 4227 1848 982520 efdf8 busybox_old 976236 4227 1848 982311 efd27 busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20seedrng: use libbb functionsJason A. Donenfeld
- Make extensive use of libbb.h functions, which simplify a lot of code and reduce binary size considerably. - Use the already existing PID_FILE_PATH variable. function old new delta seed_from_file_if_exists 697 533 -164 .rodata 108665 108484 -181 seedrng_main 1463 1218 -245 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-590) Total: -590 bytes text data bss dec hex filename 977035 4227 1848 983110 f0046 busybox_old 976445 4227 1848 982520 efdf8 busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20seedrng: import SeedRNG utility for kernel RNG seed filesJason A. Donenfeld
The RNG can't actually be seeded from a shell script, due to the reliance on ioctls and the fact that entropy written into the unprivileged /dev/urandom device is not immediately mixed in, making subsequent seed reads dangerous. For this reason, the seedrng project provides a basic "C script" meant to be copy and pasted into projects like Busybox and tweaked as needed: <https://git.zx2c4.com/seedrng/about/>. The SeedRNG construction has been part of systemd's seeder since January, and recently was added to Android, OpenRC, and Void's Runit, with more integrations on their way depending on context. Virtually every single Busybox-based distro I have seen seeds things in wrong, incomplete, or otherwise dangerous way. For example, fixing this issue in Buildroot requires first for Busybox to have this fix. This commit imports it into Busybox and wires up the basic config. The utility itself is tiny, and unlike the example code from the SeedRNG project, we can re-use libbb's existing hash functions, rather than having to ship a standalone BLAKE2s, which makes this even smaller. function old new delta seedrng_main - 1463 +1463 .rodata 107858 108665 +807 seed_from_file_if_exists - 697 +697 packed_usage 34414 34519 +105 static.longopts - 38 +38 static.seedrng_prefix - 26 +26 seed_dir - 8 +8 non_creditable_seed - 8 +8 lock_file - 8 +8 creditable_seed - 8 +8 applet_names 2747 2755 +8 applet_main 3192 3200 +8 ------------------------------------------------------------------------------ (add/remove: 9/0 grow/shrink: 4/0 up/down: 3184/0) Total: 3184 bytes text data bss dec hex filename 973776 4219 1816 979811 ef363 busybox_old 977035 4227 1848 983110 f0046 busybox_unstripped Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-03-01taskset: fix printf format mismatch in !FEATURE_TASKSET_FANCY config. closes ↵Denys Vlasenko
14616 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06*: slap on a few ALIGN* where appropriateDenys Vlasenko
The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map" function old new delta .rodata 108586 108460 -126 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-126) Total: -126 bytes text data bss dec hex filename 970412 4219 1848 976479 ee65f busybox_old 970286 4219 1848 976353 ee5e1 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-24mkfs.vfat: fix volume label to be padded with spaceTimo Teräs
The specification requires volume label to be space padded. Latest fsck.vfat will remove the zero padded volume label as invalid. See also: https://github.com/dosfstools/dosfstools/issues/172 Make the default label also "NO NAME" which has the special meaning that label is not set. function old new delta mkfs_vfat_main 1470 1502 +32 static.NO_NAME_11 - 12 +12 .rodata 104309 104318 +9 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/0 up/down: 53/0) Total: 53 bytes Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-06fdisk: recognize EBBR protective partitionsVincent Stehlé
The MBR partition type 0xF8 is used by the Arm EBBR specification[1] for protective partitions over fixed-location firmware images. [1]: https://github.com/ARM-software/ebbr Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-06libbb: code shrink: introduce and use [_]exit_SUCCESS()Denys Vlasenko
function old new delta exit_SUCCESS - 7 +7 _exit_SUCCESS - 7 +7 run_pipe 1562 1567 +5 pseudo_exec_argv 399 400 +1 finish 86 87 +1 start_stop_daemon_main 1109 1107 -2 shutdown_on_signal 38 36 -2 runsv_main 1662 1660 -2 redirect 1070 1068 -2 read_line 79 77 -2 pause_and_low_level_reboot 54 52 -2 list_i2c_busses_and_exit 483 481 -2 less_exit 12 10 -2 identify 4123 4121 -2 grep_file 1161 1159 -2 getty_main 1519 1517 -2 fsck_minix_main 2681 2679 -2 free_session 132 130 -2 fdisk_main 4739 4737 -2 clean_up_and_exit 53 51 -2 bsd_select 1566 1564 -2 bb_daemonize_or_rexec 198 196 -2 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 3/17 up/down: 21/-34) Total: -13 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-05libbb: factor out fflush_stdout_and_exit(EXIT_SUCCESS)Denys Vlasenko
function old new delta fflush_stdout_and_exit_SUCCESS - 7 +7 xxd_main 890 888 -2 vlock_main 353 351 -2 uuencode_main 318 316 -2 uniq_main 427 425 -2 uname_main 250 248 -2 sort_main 853 851 -2 shuf_main 500 498 -2 route_main 238 236 -2 readlink_main 113 111 -2 nice_main 156 154 -2 last_main 957 955 -2 ipcs_main 960 958 -2 env_main 209 207 -2 chrt_main 464 462 -2 cal_main 921 919 -2 baseNUM_main 650 648 -2 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/16 up/down: 7/-32) Total: -25 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-10-10chrt: silence analyzer warningBernhard Reutner-Fischer
warning: use of uninitialized value ‘priority’ [CWE-457] [-Wanalyzer-use-of-uninitialized-value] chrt_main 499 496 -3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-3) Total: -3 bytes text data bss dec hex filename 972157 4235 1840 978232 eed38 busybox_old 972154 4235 1840 978229 eed35 busybox_unstripped Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2021-10-10*: add more beneficial NOINLINEsDenys Vlasenko
function old new delta dec_main - 1729 +1729 -41 bytes fallbackQSort3 - 671 +671 -70 bytes verify_sun - 481 +481 -107 bytes verify 1330 742 -588 fallbackSort 1469 728 -741 unpack_xz_stream 2306 536 -1770 ------------------------------------------------------------------------------ (add/remove: 3/0 grow/shrink: 0/3 up/down: 2881/-3099) Total: -218 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-10-10*: add NOINLINEs where code noticeably shrinksDenys Vlasenko
function old new delta display 85 1463 +1378 -73 bytes select_and_cluster - 1088 +1088 -139 bytes parse_reply - 979 +979 -109 bytes zbc_num_sqrt - 632 +632 -191 bytes show_bridge_port - 585 +585 -56 bytes sp_256_proj_point_add_8 - 576 +576 -45 bytes encode_then_append_var_plusminus - 554 +554 -118 bytes read_mode_db - 537 +537 -47 bytes fbset_main 1331 747 -584 sp_256_ecc_mulmod_8 1157 536 -621 brctl_main 2189 1548 -641 expand_one_var 2544 1872 -672 zxc_vm_process 6412 5589 -823 send_queries 1813 725 -1088 recv_and_process_peer_pkt 2245 1018 -1227 bb_dump_dump 1531 80 -1451 ------------------------------------------------------------------------------ (add/remove: 7/0 grow/shrink: 1/8 up/down: 6329/-7107) Total: -778 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-10-09xxd: fix -p -r, closes 13881Denys Vlasenko
function old new delta xxd_main 893 890 -3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-01 12:19:26 +0300