aboutsummaryrefslogtreecommitdiff
path: root/archival/libarchive/get_header_ar.c
AgeCommit message (Collapse)Author
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>
2018-05-22tar: fix interaction of delayed symlink and hardlink creationHarald van Dijk
function old new delta create_or_remember_link - 106 +106 create_links_from_list - 93 +93 find_applet_by_name 124 128 +4 unzip_main 2724 2726 +2 data_extract_all 891 873 -18 create_symlinks_from_list 64 - -64 create_or_remember_symlink 94 - -94 ------------------------------------------------------------------------------ (add/remove: 2/2 grow/shrink: 2/1 up/down: 205/-176) Total: 29 bytes Signed-off-by: Harald van Dijk <harald@gigawatt.nl> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-15ar: stop using static dataDenys Vlasenko
function old new delta static.ar_long_names 4 - -4 static.ar_long_name_size 4 - -4 get_header_ar 546 532 -14 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 0/1 up/down: 0/-22) Total: -22 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-13dpkg: fix symlink creation, closes 10941Denys Vlasenko
function old new delta get_header_ar 434 442 +8 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-06ar: hopefully fix out-of-bounds read in get_header_ar()Denys Vlasenko
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=882175 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-10-05whitespace and comment format fixes, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-10-05whitespace and comment format fixes, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-09-10ar: better commentDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-09-10ar: read_num(): fix reading fields using the entire widthPeter Korsgaard
ar fields are fixed length text strings (padded with spaces). Ensure bb_strtou doesn't read past the field in case the full width is used. The fields are only read once, so the simplest/smallest solution to me seems to be to just pass the length to read_num() and then zero terminate the string before passing it to bb_strtou. This does mean that the fields MUST be read in reverse order, so some minor reshuffling was needed. Bloat-o-meter: function old new delta get_header_ar 394 414 +20 read_num 29 36 +7 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 27/0) Total: 27 bytes Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-09-22rename archive.h to bb_archive.h. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-11-03rename archival/libunarchive -> archival/libarchive; move bz/ into itDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>