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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-07-17 18:11:12 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-07-24 11:21:07 -0300 |
| commit | 95a73392580761abc62fc9b1386d232cd55878e9 (patch) | |
| tree | f629663406a340aef2846a86c3ddd738383a9af5 /elf/dl-tunables.c | |
| parent | 422ff87c249ddc06701d096421db63343e4754be (diff) | |
| download | glibc-95a73392580761abc62fc9b1386d232cd55878e9.tar.gz | |
tunables: Use direct syscall for access (BZ#21744)
The function maybe_enable_malloc_check, which is called by
__tunables_init, calls __access_noerrno. It isn't problem when
symbol is is in ld.so, which has a special version of __access_noerrno
without stack protector. But when glibc is built with stack protector,
maybe_enable_malloc_check in libc.a can't call the regular version of
__access_noerrno with stack protector.
This patch changes how Linux defines the __access_noerrno to be an
inline call instead and thus preventing defining different build
rules for ld/static and shared.
H.J. Lu <hongjiu.lu@intel.com>
Adhemerval Zanella <adhemerval.zanella@linaro.org>
[BZ #21744]
* elf/dl-tunables.c: Include not-errno.h header.
* include/unistd.h (__access_noerrno): Remove definition.
* sysdeps/unix/sysv/linux/access.c (__access_noerrno): Likewise.
* sysdeps/generic/not-errno.h: New file.
* sysdeps/unix/sysv/linux/not-errno.h: Likewise.
Diffstat (limited to 'elf/dl-tunables.c')
| -rw-r--r-- | elf/dl-tunables.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/elf/dl-tunables.c b/elf/dl-tunables.c index 44c160cac5..231fb8ca93 100644 --- a/elf/dl-tunables.c +++ b/elf/dl-tunables.c @@ -29,6 +29,8 @@ #define TUNABLES_INTERNAL 1 #include "dl-tunables.h" +#include <not-errno.h> + #if TUNABLES_FRONTEND == TUNABLES_FRONTEND_valstring # define GLIBC_TUNABLES "GLIBC_TUNABLES" #endif |