From 95a73392580761abc62fc9b1386d232cd55878e9 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 17 Jul 2017 18:11:12 -0300 Subject: 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 Adhemerval Zanella [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. --- elf/dl-tunables.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'elf') 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 + #if TUNABLES_FRONTEND == TUNABLES_FRONTEND_valstring # define GLIBC_TUNABLES "GLIBC_TUNABLES" #endif -- cgit v1.2.3