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* win32: fix compilation with FEATURE_SH_NOFORK disabledRon Yorston2024-12-311-3/+3
| | | | | Compiling with FEATURE_SH_NOFORK disabled resulted in an error and a warning. Fixing these doesn't change the default build.
* xargs: allow for quotes in commands on WindowsRon Yorston2024-12-301-2/+103
| | | | | | | | | | | When xargs limited the length of the command lines it generated it didn't allow for the quoting Windows spawn() introduces. Properly account for any additional characters required when a command is spawned on Windows. If the command is a NOFORK applet this isn't necessary. Adds 384-464 bytes.
* win32: work around problem with stderr in MSVCRTRon Yorston2024-09-301-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Try to run a non-existent command with standard error closed: xyz 2>&- In recent versions of busybox-w32 this resulted in problems with moving through history (either using up/down keys or ctrl-r) and tab completion. In all cases the order of the prompt and the command were reversed. Bisection showed the problem was first seen in PRE-5396 which merged some commits from upstream, including fd47f0567 (lineedit: print prompt and editing operations to stderr). This (eventually) called to mind a previous problem with stderr in xargs which was fixed by commit f192e6539 (xargs: fix 'xargs -sNUM' tests). In both cases it seemed that mixing calls to bb_putchar_stderr() and fprintf(stderr, ...) was at fault. The former uses a file descriptor while the latter uses a stream. It was almost as if the stream was buffered. - The problem with xargs affected 32-bit and 64-bit builds with MSVCRT. - The problem with '2>&-' only affected 32-bit builds with MSVCRT. - Neither problem was present with UCRT builds. As a workaround change bb_putchar_stderr() to use the stderr stream in builds for MSVCRT. Saves 16 bytes in the 32-bit build. (GitHub issue #460)
* Merge branch 'busybox' into mergeRon Yorston2023-07-131-2/+2
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| * Update applet size estimatesDenys Vlasenko2023-07-101-1/+1
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb: code shrink: introduce and use [_]exit_FAILURE()Denys Vlasenko2023-06-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | function old new delta exit_FAILURE - 7 +7 _exit_FAILURE - 7 +7 run 198 199 +1 restore_state_and_exit 114 115 +1 xbsd_write_bootstrap 399 397 -2 vfork_compressor 209 207 -2 sig_handler 12 10 -2 serial_ctl 154 152 -2 parse_args 1169 1167 -2 onintr 21 19 -2 make_new_session 493 491 -2 login_main 988 986 -2 gotsig 35 33 -2 do_iplink 1315 1313 -2 addgroup_main 397 395 -2 inetd_main 1911 1908 -3 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 2/12 up/down: 16/-25) Total: -9 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | win32: changes to signal handlingRon Yorston2023-05-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use an exit code of the form (signal << 24) when a process exits due to a signal. This replaces the previous use of (signal + 128). This makes it easier to distinguish exit codes from signals. Allow kill(2) to handle all defined signals, not just EXIT, TERM and KILL. The kill and timeout applets now accept any defined signals. Convert certain Windows status codes Unix-style signal codes. In ash: - Exit as if with SIGINT in raise_interrupt() rather than call raise(SIGINT). The latter returns an exit code of 3. - Detect if a child process exits as if with SIGINT. If not and if the parent is an interactive top-level shell, reset pending_int. This prevents the parent from seeing an INT if the child hasn't reported it exited due to INT. (Probably due to it being an interactive shell.) Costs 132-136 bytes.
* | xargs: reinstate use of nofork appletsRon Yorston2023-04-271-22/+38
| | | | | | | | | | | | | | | | Commit 99402ca92 (xargs: kill children when interrupted by Ctrl-C) caused all child processes to be spawned, losing the advantage of running nofork applets without spawning. Costs 64 bytes.
* | xargs: kill children when interrupted by Ctrl-CRon Yorston2023-04-071-3/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A user was running the following command in a clone of the busybox-w32 repo from a busybox-w32 shell using Git for Windows: git rev-list --all | xargs git grep main.c Using Ctrl-C to interrupt the command resulted in the familiar problem that two processes ended up competing for user input: in this case the busybox-w32 shell and the Git for Windows pager, less. Make the problem go away (in this particular case) by killing all the children of xargs when it's interrupted. This is probably a sensible thing to do for other circumstances too. Adds 64-100 bytes. (GitHub issue #306)
* | xargs: omit support for -oRon Yorston2023-01-051-3/+14
| | | | | | | | | | Upstream added the -o option to reopen stdin as /dev/tty. Since /dev/tty isn't available in Microsoft Windows -o isn't applicable.
* | Merge branch 'busybox' into mergeRon Yorston2023-01-051-34/+51
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| * xargs: implement -o, closes 15146Denys Vlasenko2022-12-221-34/+51
| | | | | | | | | | | | | | | | | | | | | | | | function old new delta .rodata 105225 105259 +34 d6_listen_socket 150 180 +30 packed_usage 34512 34532 +20 d6_read_interface 595 581 -14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/1 up/down: 84/-14) Total: 70 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge branch 'busybox' into mergeRon Yorston2021-08-301-1/+1
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| * Regularize "NUL terminated input" --help textsDenys Vlasenko2021-08-221-1/+1
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge branch 'busybox' into mergeRon Yorston2020-11-121-5/+16
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| * xargs: fix -I SUBSTR behaviourDenys Vlasenko2020-09-301-5/+16
| | | | | | | | | | | | | | function old new delta process_stdin_with_replace 165 204 +39 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * xargs: restore correct behaviour of -n optionRon Yorston2020-04-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 1ff7002b1 (xargs: fix handling of quoted arguments, closes 11441) the -n option hasn't worked properly: $ echo 1 2 3 | xargs -n 1 echo 1 2 3 $ Because state is now remembered between calls to process_stdin() it's necessary to update the state before any premature return. Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | xargs: restore correct behaviour of -n optionRon Yorston2020-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 1ff7002b1 (xargs: fix handling of quoted arguments, closes 11441) the -n option hasn't worked properly: $ echo 1 2 3 | xargs -n 1 echo 1 2 3 $ Because state is now remembered between calls to process_stdin() it's necessary to update the state before any premature return.
* | Merge branch 'busybox' into mergeRon Yorston2020-02-151-9/+18
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| * xargs: fix handling of quoted arguments, closes 11441Ron Yorston2020-01-291-9/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported in bug 11441 when presented with a large number of quoted arguments xargs can return 'argument line too long': seq 10000 29999 | sed -e 's/^/"/' -e 's/$/"/' | busybox xargs echo This happens because the variant of process_stdin() which handles quoted arguments doesn't preserve state between calls. If the allowed number of characters is exceeded part way through a quoted argument the next call to process_stdin() incorrectly treats the terminating quote as a starting quote, thus quoting all of the argument separators. function old new delta process_stdin 274 303 +29 xargs_main 731 745 +14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 43/0) Total: 43 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge branch 'busybox' into mergeRon Yorston2019-08-161-2/+2
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| * libbb: reduce the overhead of single parameter bb_error_msg() callsJames Byrne2019-07-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Merge branch 'busybox' into mergeRon Yorston2019-03-121-7/+7
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| * xargs: mention -E STR in --helpDenys Vlasenko2019-03-101-7/+7
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge branch 'busybox' into mergeRon Yorston2019-01-101-1/+1
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| * config: update size informationDenys Vlasenko2018-12-281-1/+1
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | xargs: fix 'xargs -sNUM' testsRon Yorston2019-01-061-0/+4
| | | | | | | | | | The tests for 'xargs -sNUM' fail due to a missing newline unless it's output using fprintf rather than bb_putchar_stderr.
* | Merge branch 'busybox' into mergeRon Yorston2018-11-281-3/+4
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| * xargs: fix exit code if command exits nonzero, closes 11381Denys Vlasenko2018-10-301-3/+4
| | | | | | | | | | | | No code size change on x86. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge branch 'busybox'Ron Yorston2018-07-251-1/+1
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| * tweak help textsDenys Vlasenko2018-07-061-1/+1
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge branch 'busybox' into mergeRon Yorston2018-04-091-10/+11
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| * xargs: use bb_ask_y_confirmation_FILE() instead of homegrown copyDenys Vlasenko2018-04-071-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | function old new delta bb_ask_y_confirmation_FILE - 83 +83 inetd_main 2033 2043 +10 udhcp_send_kernel_packet 295 301 +6 rmescapes 306 310 +4 send_tree 353 355 +2 i2cdetect_main 674 672 -2 confirm_or_abort 43 38 -5 get_terminal_width_height 242 234 -8 bb_ask_y_confirmation 76 10 -66 xargs_main 823 755 -68 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 4/5 up/down: 105/-149) Total: -44 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | mingw: special-case xargs -P on WindowsJohannes Schindelin2017-10-011-0/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patches to let xargs support parallel operations on Linux/Unix was contributed and accepted in upstream BusyBox. To benefit from this on Windows, we have to work quite a bit harder, was it is pretty hard to emulate the waitpid() semantics on Windows when pid is -1, i.e. when waiting for any child to exit. The problem is not so much accumulating the process handles of children we spawned (we could do that in our own spawn() implementation), but the fact that waitpid() returns exactly one pid even when multiple children have exited, retaining the rest of them for subsequent waitpid() calls. And on Linux/Unix, those pids are reserved even if the processes have exited, at least for a while, but not on Windows. And then there is the problem that BusyBox may have spawned *other* processes, too, not just the ones we care about in xargs -P. A much more elegant way is to add Windows-specific code to xargs.c that specifically handles the child processes spawned by xargs. So let's do this. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Ron Yorston <rmy@pobox.com>
* | Merge branch 'busybox' into mergeRon Yorston2017-09-271-32/+144
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| * xargs: fix a thinko in last commitDenys Vlasenko2017-08-301-1/+1
| | | | | | | | | | | | | | | | IF_FEATURE_XARGS_SUPPORT_PARALLEL(char *opt_a = NULL;) is replaced with IF_FEATURE_XARGS_SUPPORT_ARGS_FILE Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * xargs: support -a FILEJohannes Schindelin2017-08-291-1/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The GNU-specific option -a lets xargs read the arguments from a file rather than from stdin. This is particularly convenient when debugging in gdb interactively, and it might be of more general use. function old new delta xargs_main 788 823 +35 packed_usage 31683 31671 -12 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * xargs: optional support for -P NUM. Closes 9511Denys Vlasenko2017-08-241-18/+117
| | | | | | | | | | | | | | | | | | | | | | | | | | Based on patch by Johannes Schindelin <johannes.schindelin@gmx.de> function old new delta xargs_exec - 294 +294 packed_usage 31757 31772 +15 xargs_main 787 719 -68 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 309/-68) Total: 241 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * xargs: code shrinkDenys Vlasenko2017-08-241-14/+11
| | | | | | | | | | | | | | function old new delta xargs_main 827 787 -40 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | xargs: avoid unused variableJohannes Schindelin2017-08-231-0/+2
| | | | | | | | | | | | | | | | This was forgotten in 124bbf029 (xargs: read characters directly from console so -p flag works, 2014-09-10). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Ron Yorston <rmy@pobox.com>
* | Merge branch 'busybox' into mergeRon Yorston2017-08-221-7/+2
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| * getopt32: remove applet_long_optionsDenys Vlasenko2017-08-081-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Merge branch 'busybox' into mergeRon Yorston2017-07-241-12/+12
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| * config: deindent all help textsDenys Vlasenko2017-07-211-11/+11
| | | | | | | | | | | | Those two spaces after tab have no effect, and always a nuisance when editing. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * Update menuconfig items with approximate applet sizesDenys Vlasenko2017-07-181-1/+1
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge branch 'busybox' into mergeRon Yorston2016-05-161-1/+3
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| * *: add most of the required setup_common_bufsiz() callsDenys Vlasenko2016-04-211-0/+1
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb: make bb_common_bufsiz1 1 kbyte, add capability to use bss tail for itDenys Vlasenko2016-04-211-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The config item is FEATURE_USE_BSS_TAIL. When it is off (default): function old new delta read_config 210 228 +18 doCommands 2279 2294 +15 ipneigh_list_or_flush 763 772 +9 ipaddr_list_or_flush 1256 1261 +5 display_process_list 1301 1306 +5 conspy_main 1378 1383 +5 do_lzo_compress 352 355 +3 do_lzo_decompress 565 567 +2 push 46 44 -2 inetd_main 2136 2134 -2 uevent_main 421 418 -3 addLines 97 92 -5 bb_common_bufsiz1 8193 1024 -7169 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 8/5 up/down: 62/-7181) Total: -7119 bytes text data bss dec hex filename 829850 4086 9080 843016 cdd08 busybox_old 829901 4086 1904 835891 cc133 busybox_unstripped FEATURE_USE_BSS_TAIL=y: read_config 210 228 +18 doCommands 2279 2294 +15 ipneigh_list_or_flush 763 772 +9 ipaddr_list_or_flush 1256 1261 +5 display_process_list 1301 1306 +5 conspy_main 1378 1383 +5 do_lzo_compress 352 355 +3 do_lzo_decompress 565 567 +2 inetd_main 2136 2134 -2 bb_common_bufsiz1 8193 - -8193 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 8/1 up/down: 62/-8195) Total: -8133 bytes text data bss dec hex filename 829850 4086 9080 843016 cdd08 busybox_old 829911 4086 880 834877 cbd3d busybox_unstripped FIXME: setup_common_bufsiz() calls are missing. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge branch 'busybox' into mergeRon Yorston2015-10-311-0/+3
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| * xargs: make -I imply -rAaro Koskinen2015-10-241-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | Make -I imply -r (GNU findutils seems to do the same). Fixes the following bug: $ echo -n | xargs -I% echo % Segmentation fault Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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