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| author | Denys Vlasenko | 2014-06-22 13:54:40 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2014-06-22 13:54:40 +0200 |
| commit | f92f1d0181853b989f9377debb56902e3e21c9a8 (patch) | |
| tree | 14c0bb888dea4b92e0f8dcaec2aa9c2a40eb3966 /libbb | |
| parent | 6be3a5242ce4855734a4cdd5770b6ea7adaf2b3d (diff) | |
| download | busybox-f92f1d0181853b989f9377debb56902e3e21c9a8.zip busybox-f92f1d0181853b989f9377debb56902e3e21c9a8.tar.gz | |
find: use sysconf(_SC_ARG_MAX) to determine the command-line size limit
The find utility uses a hardcoded value of 32 * 1024 as the limit of
the command-line length when calling 'find -exec ... {} +'. This results
in over 4 times more execve() calls than in coreutils' find.
This patch uses the limit defined in system headers.
Based on the patch by Bartosz Golaszewski <bartekgola@gmail.com>.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb')
| -rw-r--r-- | libbb/Kbuild.src | 1 | ||||
| -rw-r--r-- | libbb/sysconf.c | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/libbb/Kbuild.src b/libbb/Kbuild.src index 6578d11..62680bd 100644 --- a/libbb/Kbuild.src +++ b/libbb/Kbuild.src @@ -92,6 +92,7 @@ lib-y += skip_whitespace.o lib-y += speed_table.o lib-y += str_tolower.o lib-y += strrstr.o +lib-y += sysconf.o lib-y += time.o lib-y += trim.o lib-y += u_signal_names.o diff --git a/libbb/sysconf.c b/libbb/sysconf.c new file mode 100644 index 0000000..c5fa5e0 --- /dev/null +++ b/libbb/sysconf.c @@ -0,0 +1,16 @@ +/* vi: set sw=4 ts=4: */ +/* + * Various system configuration helpers. + * + * Copyright (C) 2014 Bartosz Golaszewski <bartekgola@gmail.com> + * + * Licensed under GPLv2 or later, see file LICENSE in this source tree. + */ +#include "libbb.h" + +#if defined _SC_ARG_MAX +unsigned FAST_FUNC bb_arg_max(void) +{ + return sysconf(_SC_ARG_MAX); +} +#endif |