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authorJosh Triplett <josh@joshtriplett.org>2014-04-03 14:48:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-03 16:21:05 -0700
commit69369a7003735d0d8ef22097e27a55a8bad9557a (patch)
treeb7638899a8e81fc18a497791685f1b571d733896 /init/Kconfig
parent8f6c5ffc8987f4f5b5a3e9d557d94bbf3a9bf216 (diff)
downloadlinux-linaro-stable-69369a7003735d0d8ef22097e27a55a8bad9557a.tar.gz
fs, kernel: permit disabling the uselib syscall
uselib hasn't been used since libc5; glibc does not use it. Support turning it off. When disabled, also omit the load_elf_library implementation from binfmt_elf.c, which only uselib invokes. bloat-o-meter: add/remove: 0/4 grow/shrink: 0/1 up/down: 0/-785 (-785) function old new delta padzero 39 36 -3 uselib_flags 20 - -20 sys_uselib 168 - -168 SyS_uselib 168 - -168 load_elf_library 426 - -426 The new CONFIG_USELIB defaults to `y'. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init/Kconfig')
-rw-r--r--init/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index e45cc62904b3..8114a06117e3 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -273,6 +273,16 @@ config FHANDLE
get renamed. Enables open_by_handle_at(2) and name_to_handle_at(2)
syscalls.
+config USELIB
+ bool "uselib syscall"
+ default y
+ help
+ This option enables the uselib syscall, a system call used in the
+ dynamic linker from libc5 and earlier. glibc does not use this
+ system call. If you intend to run programs built on libc5 or
+ earlier, you may need to enable this syscall. Current systems
+ running glibc can safely disable this.
+
config AUDIT
bool "Auditing support"
depends on NET