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path: root/loginutils/chpasswd.c
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2019-07-02libbb: reduce the overhead of single parameter bb_error_msg() callsJames Byrne
Back in 2007, commit 0c97c9d43707 ("'simple' error message functions by Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower overhead call to bb_perror_msg() when only a string was being printed with no parameters. This saves space for some CPU architectures because it avoids the overhead of a call to a variadic function. However there has never been a simple version of bb_error_msg(), and since 2007 many new calls to bb_perror_msg() have been added that only take a single parameter and so could have been using bb_simple_perror_message(). This changeset introduces 'simple' versions of bb_info_msg(), bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and bb_herror_msg_and_die(), and replaces all calls that only take a single parameter, or use something like ("%s", arg), with calls to the corresponding 'simple' version. Since it is likely that single parameter calls to the variadic functions may be accidentally reintroduced in the future a new debugging config option WARN_SIMPLE_MSG has been introduced. This uses some macro magic which will cause any such calls to generate a warning, but this is turned off by default to avoid use of the unpleasant macros in normal circumstances. This is a large changeset due to the number of calls that have been replaced. The only files that contain changes other than simple substitution of function calls are libbb.h, libbb/herror_msg.c, libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c, networking/udhcp/common.h and util-linux/mdev.c additonal macros have been added for logging so that single parameter and multiple parameter logging variants exist. The amount of space saved varies considerably by architecture, and was found to be as follows (for 'defconfig' using GCC 7.4): Arm: -92 bytes MIPS: -52 bytes PPC: -1836 bytes x86_64: -938 bytes Note that for the MIPS architecture only an exception had to be made disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h) because it made these files larger on MIPS. Signed-off-by: James Byrne <james.byrne@origamienergy.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-04-30Optionally re-introduce bb_info_msg()James Byrne
Between Busybox 1.24.2 and 1.25.0 the bb_info_msg() function was eliminated and calls to it changed to be bb_error_msg(). The downside of this is that daemons now log all messages to syslog at the LOG_ERR level which makes it hard to filter errors from informational messages. This change optionally re-introduces bb_info_msg(), controlled by a new option FEATURE_SYSLOG_INFO, restores all the calls to bb_info_msg() that were removed (only in applets that set logmode to LOGMODE_SYSLOG or LOGMODE_BOTH), and also changes informational messages in ifplugd and ntpd. The code size change of this is as follows (using 'defconfig' on x86_64 with gcc 7.3.0-27ubuntu1~18.04) function old new delta bb_info_msg - 182 +182 bb_vinfo_msg - 27 +27 static.log7 194 198 +4 log8 190 191 +1 log5 190 191 +1 crondlog 45 - -45 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 3/0 up/down: 215/-45) Total: 170 bytes If you don't care about everything being logged at LOG_ERR level then when FEATURE_SYSLOG_INFO is disabled Busybox actually gets smaller: function old new delta static.log7 194 200 +6 log8 190 193 +3 log5 190 193 +3 syslog_level 1 - -1 bb_verror_msg 583 581 -2 crondlog 45 - -45 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 3/1 up/down: 12/-48) Total: -36 bytes Signed-off-by: James Byrne <james.byrne@origamienergy.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-08-01Add chroot support to chpasswdJon Kolb
function old new delta .rodata 170689 170724 +35 packed_usage 32850 32876 +26 chpasswd_main 411 436 +25 chpasswd_longopts 34 41 +7 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 93/0) Total: 93 bytes Signed-off-by: Jon Kolb <kolbyjack@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-08getopt32: remove opt_complementaryDenys Vlasenko
function old new delta vgetopt32 1318 1392 +74 runsvdir_main 703 713 +10 bb_make_directory 423 425 +2 collect_cpu 546 545 -1 opt_chars 3 - -3 opt_complementary 4 - -4 tftpd_main 567 562 -5 ntp_init 476 471 -5 zcip_main 1266 1256 -10 xxd_main 428 418 -10 whois_main 140 130 -10 who_main 463 453 -10 which_main 212 202 -10 wget_main 2535 2525 -10 watchdog_main 291 281 -10 watch_main 222 212 -10 vlock_main 399 389 -10 uuencode_main 332 322 -10 uudecode_main 316 306 -10 unlink_main 45 35 -10 udhcpd_main 1482 1472 -10 udhcpc_main 2762 2752 -10 tune2fs_main 290 280 -10 tunctl_main 366 356 -10 truncate_main 218 208 -10 tr_main 518 508 -10 time_main 1134 1124 -10 tftp_main 286 276 -10 telnetd_main 1873 1863 -10 tcpudpsvd_main 1785 1775 -10 taskset_main 521 511 -10 tar_main 1009 999 -10 tail_main 1644 1634 -10 syslogd_main 1967 1957 -10 switch_root_main 368 358 -10 svlogd_main 1454 1444 -10 sv 1296 1286 -10 stat_main 104 94 -10 start_stop_daemon_main 1028 1018 -10 split_main 542 532 -10 sort_main 796 786 -10 slattach_main 624 614 -10 shuf_main 504 494 -10 setsid_main 96 86 -10 setserial_main 1132 1122 -10 setfont_main 388 378 -10 setconsole_main 78 68 -10 sendmail_main 1209 1199 -10 sed_main 677 667 -10 script_main 1077 1067 -10 run_parts_main 325 315 -10 rtcwake_main 454 444 -10 rm_main 175 165 -10 reformime_main 119 109 -10 readlink_main 123 113 -10 rdate_main 246 236 -10 pwdx_main 189 179 -10 pstree_main 317 307 -10 pscan_main 663 653 -10 popmaildir_main 818 808 -10 pmap_main 80 70 -10 nc_main 1042 1032 -10 mv_main 558 548 -10 mountpoint_main 477 467 -10 mount_main 1264 1254 -10 modprobe_main 768 758 -10 modinfo_main 333 323 -10 mktemp_main 200 190 -10 mkswap_main 324 314 -10 mkfs_vfat_main 1489 1479 -10 microcom_main 715 705 -10 md5_sha1_sum_main 521 511 -10 man_main 867 857 -10 makedevs_main 1052 1042 -10 ls_main 563 553 -10 losetup_main 432 422 -10 loadfont_main 89 79 -10 ln_main 524 514 -10 link_main 75 65 -10 ipcalc_main 544 534 -10 iostat_main 2397 2387 -10 install_main 768 758 -10 id_main 480 470 -10 i2cset_main 1239 1229 -10 i2cget_main 380 370 -10 i2cdump_main 1482 1472 -10 i2cdetect_main 682 672 -10 hwclock_main 406 396 -10 httpd_main 741 731 -10 grep_main 837 827 -10 getty_main 1559 1549 -10 fuser_main 297 287 -10 ftpgetput_main 345 335 -10 ftpd_main 2232 2222 -10 fstrim_main 251 241 -10 fsfreeze_main 77 67 -10 fsck_minix_main 2921 2911 -10 flock_main 314 304 -10 flashcp_main 740 730 -10 flash_eraseall_main 833 823 -10 fdformat_main 532 522 -10 expand_main 680 670 -10 eject_main 335 325 -10 dumpleases_main 630 620 -10 du_main 314 304 -10 dos2unix_main 441 431 -10 diff_main 1350 1340 -10 df_main 1064 1054 -10 date_main 1095 1085 -10 cut_main 961 951 -10 cryptpw_main 228 218 -10 crontab_main 575 565 -10 crond_main 1149 1139 -10 cp_main 370 360 -10 common_traceroute_main 3834 3824 -10 common_ping_main 1767 1757 -10 comm_main 239 229 -10 cmp_main 655 645 -10 chrt_main 379 369 -10 chpst_main 704 694 -10 chpasswd_main 308 298 -10 chown_main 171 161 -10 chmod_main 158 148 -10 cat_main 428 418 -10 bzip2_main 120 110 -10 blkdiscard_main 264 254 -10 base64_main 221 211 -10 arping_main 1665 1655 -10 ar_main 556 546 -10 adjtimex_main 406 396 -10 adduser_main 882 872 -10 addgroup_main 411 401 -10 acpid_main 1198 1188 -10 optstring 11 - -11 opt_string 18 - -18 OPT_STR 25 - -25 ubi_tools_main 1288 1258 -30 ls_options 31 - -31 ------------------------------------------------------------------------------ (add/remove: 0/6 grow/shrink: 3/129 up/down: 86/-1383) Total: -1297 bytes text data bss dec hex filename 915428 485 6876 922789 e14a5 busybox_old 914629 485 6872 921986 e1182 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-08getopt32: remove applet_long_optionsDenys Vlasenko
FEATURE_GETOPT_LONG made dependent on LONG_OPTS. The folloving options are removed, now LONG_OPTS enables long options for affected applets: FEATURE_ENV_LONG_OPTIONS FEATURE_EXPAND_LONG_OPTIONS FEATURE_UNEXPAND_LONG_OPTIONS FEATURE_MKDIR_LONG_OPTIONS FEATURE_MV_LONG_OPTIONS FEATURE_RMDIR_LONG_OPTIONS FEATURE_ADDGROUP_LONG_OPTIONS FEATURE_ADDUSER_LONG_OPTIONS FEATURE_HWCLOCK_LONG_OPTIONS FEATURE_NSENTER_LONG_OPTS FEATURE_CHCON_LONG_OPTIONS FEATURE_RUNCON_LONG_OPTIONS They either had a small number of long options, or their long options are essential. Example: upstream addgroup and adduser have ONLY longopts, we should probably go further and get rid of non-standard short options. To this end, make addgroup and adduser "select LONG_OPTS". We had this breakage caused by us even in our own package! #if ENABLE_LONG_OPTS || !ENABLE_ADDGROUP /* We try to use --gid, not -g, because "standard" addgroup * has no short option -g, it has only long --gid. */ argv[1] = (char*)"--gid"; #else /* Breaks if system in fact does NOT use busybox addgroup */ argv[1] = (char*)"-g"; #endif xargs: its lone longopt no longer depends on DESKTOP, only on LONG_OPTS. hwclock TODO: get rid of incompatible -t, -l aliases to --systz, --localtime Shorten help texts by omitting long option when short opt alternative exists. Reduction of size comes from the fact that store of an immediate (an address of longopts) to a fixed address (global variable) is a longer insn than pushing that immediate or passing it in a register. This effect is CPU-agnostic. function old new delta getopt32 1350 22 -1328 vgetopt32 - 1318 +1318 getopt32long - 24 +24 tftpd_main 562 567 +5 scan_recursive 376 380 +4 collect_cpu 545 546 +1 date_main 1096 1095 -1 hostname_main 262 259 -3 uname_main 259 255 -4 setpriv_main 362 358 -4 rmdir_main 191 187 -4 mv_main 562 558 -4 ipcalc_main 548 544 -4 ifenslave_main 641 637 -4 gzip_main 192 188 -4 gunzip_main 77 73 -4 fsfreeze_main 81 77 -4 flock_main 318 314 -4 deluser_main 337 333 -4 cp_main 374 370 -4 chown_main 175 171 -4 applet_long_options 4 - -4 xargs_main 894 889 -5 wget_main 2540 2535 -5 udhcpc_main 2767 2762 -5 touch_main 436 431 -5 tar_main 1014 1009 -5 start_stop_daemon_main 1033 1028 -5 sed_main 682 677 -5 script_main 1082 1077 -5 run_parts_main 330 325 -5 rtcwake_main 459 454 -5 od_main 2169 2164 -5 nl_main 201 196 -5 modprobe_main 773 768 -5 mkdir_main 160 155 -5 ls_main 568 563 -5 install_main 773 768 -5 hwclock_main 411 406 -5 getopt_main 622 617 -5 fstrim_main 256 251 -5 env_main 198 193 -5 dumpleases_main 635 630 -5 dpkg_main 3991 3986 -5 diff_main 1355 1350 -5 cryptpw_main 233 228 -5 cpio_main 593 588 -5 conspy_main 1135 1130 -5 chpasswd_main 313 308 -5 adduser_main 887 882 -5 addgroup_main 416 411 -5 ftpgetput_main 351 345 -6 get_terminal_width_height 242 234 -8 expand_main 690 680 -10 static.expand_longopts 18 - -18 static.unexpand_longopts 27 - -27 mkdir_longopts 28 - -28 env_longopts 30 - -30 static.ifenslave_longopts 34 - -34 mv_longopts 46 - -46 static.rmdir_longopts 48 - -48 packed_usage 31739 31687 -52 ------------------------------------------------------------------------------ (add/remove: 2/8 grow/shrink: 3/49 up/down: 1352/-1840) Total: -488 bytes text data bss dec hex filename 915681 485 6880 923046 e15a6 busybox_old 915428 485 6876 922789 e14a5 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21config: deindent all help textsDenys Vlasenko
Those two spaces after tab have no effect, and always a nuisance when editing. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-18Update menuconfig items with approximate applet sizesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-20password utils: improve --help, make DEFAULT_PASSWD_ALGO visible if CHPASSWDDenys Vlasenko
Was: $ cryptpw --help ... Print crypt(3) hashed PASSWORD -P,--password-fd=N Read password from fd N -m,--method=TYPE Encryption method -S,--salt=SALT User: "What methods exist? which one os default?" Now: Print crypt(3) hashed PASSWORD -P,--password-fd N Read password from fd N -m,--method TYPE des,md5,sha256/512 (default des) -S,--salt SALT Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-03-30Replace a few more bb_info_msg's by bb_error_msg or printfDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-12-18chpasswd: support -c argument and respect DEFAULT_PASSWD_ALGOPascal Bach
Signed-off-by: Pascal Bach <pascal.bach@siemens.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-10-19loginutils/*: convert to new-style "one file" appletsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-01-08passwd,cryptpw: make default encryption algorithm configurableDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-09-11chpasswd: fix possible free() or non-allocated string. +8 bytesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-06-05*: remove "Options:" string from help textsDenys Vlasenko
function old new delta packed_usage 28706 28623 -83 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-05-13adduser: safe username passing to passwd/addgroupDenys Vlasenko
passwd: support creating SHA passwords random code shrink function old new delta crypt_make_pw_salt - 87 +87 adduser_main 883 904 +21 ... crypt_make_salt 99 89 -10 chpasswd_main 329 312 -17 packed_usage 28731 28691 -40 passwd_main 1070 1000 -70 cryptpw_main 310 224 -86 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 4/12 up/down: 154/-288) Total: -134 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-04-05passwd,chpasswd: reset password in /etc/passwd to "x" if /etc/shadow was updatedTito Ragusa
Signed-off-by: Tito Ragusa <farmatito@tiscali.it> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-04-03move help text from include/usage.src.h to debianutils/*.c e2fsprogs/*.c ↵Pere Orga
editors/*.c loginutils/*.c mailutils/*.c Signed-off-by: Pere Orga <gotrunks@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-10-28*: whitespace fixesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-16*: make GNU licensing statement forms more regularDenys Vlasenko
This change retains "or later" state! No licensing _changes_ here, only form is adjusted (article, space between "GPL" and "v2" and so on). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-06-19getopt: FEATURE_GETOPT_LONG for -l; rename GETOPT_LONG to LONG_OPTSDenys Vlasenko
Signed-off-by: Colin Watson <cjwatson@ubuntu.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-04-21*: mass renaming of USE_XXXX to IF_XXXXDenis Vlasenko
and SKIP_XXXX to IF_NOT_XXXX - the second one was especially badly named. It was not skipping anything!
2009-04-14*: unify concurrent-safe update of /etc/{passwd,group,[g]shadow}Denis Vlasenko
by Tito (farmatito AT tiscali.it) function old new delta update_passwd 743 1171 +428 bb_perror_nomsg - 9 +9 find_main 436 444 +8 passwd_main 1023 1027 +4 nameval 202 206 +4 chpasswd_main 315 319 +4 bb__parsespent 119 117 -2 adduser_main 654 650 -4 addgroup_main 345 341 -4 sv_main 1228 1222 -6 deluser_main 173 160 -13 bb_internal_putpwent 69 - -69 add_user_to_group 231 - -231 del_line_matching 460 31 -429 ------------------------------------------------------------------------------ (add/remove: 1/2 grow/shrink: 5/6 up/down: 457/-758) Total: -301 bytes
2008-08-05- don't free user-supplied string (via -e)Bernhard Reutner-Fischer
- fix helptext function old new delta chpasswd_main 300 319 +19 packed_usage 24352 24344 -8 .rodata 122227 122195 -32 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/2 up/down: 19/-40) Total: -21 bytes
2008-07-05*: rename ATTRIBUTE_XXX to just XXX.Denis Vlasenko
2008-06-12make pw_encrypt() return malloc'ed string.Denis Vlasenko
text data bss dec hex filename 759802 604 6684 767090 bb472 busybox_old 759804 604 6676 767084 bb46c busybox_unstripped
2008-06-12uclibc insists on having 70k static buffer for crypt.Denis Vlasenko
For bbox it's not acceptable. Roll our own des and md5 crypt implementation. Against older uclibc: text data bss dec hex filename 759945 604 6684 767233 bb501 busybox_old 759766 604 6684 767054 bb44e busybox_unstripped so, we still save on code size.
2008-03-26*: more uniform naming: s/xmalloc_getline/xmalloc_fgetline/Denis Vlasenko
2008-03-23patch: shrink by Pascal Bellard <pascal.bellard AT ads-lu.com> (-80 bytes)Denis Vlasenko
*: removal of #include <getopt.h>
2008-03-17*: add -Wunused-parameter; fix resulting breakageDenis Vlasenko
function old new delta procps_scan 1265 1298 +33 aliascmd 278 283 +5 parse_file_cmd 116 120 +4 dname_enc 373 377 +4 setcmd 90 93 +3 execcmd 57 60 +3 count_lines 72 74 +2 process_command_subs 340 339 -1 test_main 409 407 -2 mknod_main 179 177 -2 handle_incoming_and_exit 2653 2651 -2 argstr 1312 1310 -2 shiftcmd 131 128 -3 exitcmd 46 43 -3 dotcmd 297 294 -3 breakcmd 86 83 -3 evalpipe 353 349 -4 evalcommand 1180 1176 -4 evalcmd 109 105 -4 send_tree 374 369 -5 mkfifo_main 82 77 -5 evalsubshell 152 147 -5 typecmd 75 69 -6 letcmd 61 55 -6 add_cmd 1190 1183 -7 main 891 883 -8 ash_main 1415 1407 -8 parse_stream 1377 1367 -10 alloc_procps_scan 55 - -55 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148) Total: -94 bytes text data bss dec hex filename 797195 658 7428 805281 c49a1 busybox_old 797101 658 7428 805187 c4943 busybox_unstripped
2007-10-11add -fvisibility=hidden to CC flags, mark XXX_main functionsDenis Vlasenko
EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
2007-08-18don't pass argc in getopt32, it's superfluousDenis Vlasenko
(add/remove: 0/0 grow/shrink: 12/131 up/down: 91/-727) Total: -636 bytes text data bss dec hex filename 773469 1058 11092 785619 bfcd3 busybox_old 772644 1058 11092 784794 bf99a busybox_unstripped
2007-08-16whitespace fixes, no code changesDenis Vlasenko
2007-08-12trylink: produce even more info about final link stageDenis Vlasenko
trylink: explain how to modify link and drastically decrease amount of padding (unfortunately, needs hand editing ATM). *: add ALIGN1 / ALIGN2 to global strings and arrays of bytes and shorts size saving: 0.5k
2007-07-24Replace index_in_[sub]str_array with index_in_[sub]strings,Denis Vlasenko
which scans thru "abc\0def\0123\0\0" type strings. Saves 250 bytes. text data bss dec hex filename 781266 1328 11844 794438 c1f46 busybox_old 781010 1328 11844 794182 c1e46 busybox_unstripped
2007-07-23chpasswd: rename long options definition to match other applets. no code changesDenis Vlasenko
2007-07-23rework long option handling. saves ~1.2kDenis Vlasenko
function old new delta tar_longopts - 222 +222 static.udhcpc_longopts - 192 +192 start_stop_daemon_longopts - 150 +150 getopt32 1045 1185 +140 static.wget_longopts - 111 +111 static.od_longopts - 105 +105 getopt_longopts - 96 +96 install_longopts - 67 +67 ipcalc_longopts - 63 +63 static.hwclock_longopts - 54 +54 ftpgetput_longopts - 52 +52 static.dumpleases_longopts - 32 +32 env_longopts - 31 +31 runparts_longopts - 30 +30 mv_longopts - 24 +24 mkdir_longopts - 19 +19 find_pair 164 180 +16 bb_null_long_options - 16 +16 setconsole_longopts - 10 +10 display_speed 91 98 +7 collect_blk 467 474 +7 show_color 4 1 -3 ls_main 913 904 -9 bb_default_long_options 16 - -16 ls_color_opt 32 10 -22 setconsole_long_options 32 - -32 arith 2077 2030 -47 mv_long_options 48 - -48 mkdir_long_options 48 - -48 env_long_options 48 - -48 static.options 248 184 -64 runparts_long_options 80 - -80 ftpgetput_long_options 96 - -96 static.hwclock_long_options 112 - -112 install_long_options 112 - -112 static.long_options 144 - -144 static.wget_long_options 160 - -160 longopts 160 - -160 static.arg_options 304 - -304 tar_long_options 320 - -320 long_options 384 - -384 ------------------------------------------------------------------------------ (add/remove: 17/15 grow/shrink: 4/5 up/down: 1444/-2209) Total: -765 bytes text data bss dec hex filename 782618 1328 11900 795846 c24c6 busybox_old 781354 1328 11900 794582 c1fd6 busybox_unstripped
2007-07-21chpasswd: fix indentationDenis Vlasenko
2007-07-21chpasswd: fixes for shadow password handlingDenis Vlasenko
2007-07-21chpasswd: fixes and code shrinkDenis Vlasenko
update_passwd 732 734 +2 chpasswd_main 318 292 -26 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-26) Total: -24 bytes text data bss dec hex filename 781564 1168 11900 794632 c2008 busybox_old 781548 1168 11900 794616 c1ff8 busybox_unstripped
2007-07-20chpasswd: now with svn addDenis Vlasenko