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authorUlrich Drepper <drepper@redhat.com>2008-07-24 18:33:44 +0000
committerUlrich Drepper <drepper@redhat.com>2008-07-24 18:33:44 +0000
commit0e077a7eea286a8efd63460d0ea5d99e44a86b71 (patch)
tree38d71e27469168c43fd230adeb20b206eb156b39 /elf/dl-support.c
parent579cdf5a473e1e14e67539103b4cb525f8b7cf6e (diff)
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* elf/elf.h: Define AT_EXECFN.
* elf/rtld.c [!__ASSUME_AT_EXECFN] (process_envvars): Don't handle LD_ORIGIN_PATH. * elf/dl-sysdep.c (_dl_sysdep_start): Handle AT_EXECFN. * elf/dl-support.c: Define _dl_execfn. Don't define _dl_origin_path if __ASSUME_AT_EXECFN is defined. (_dl_aux_init): Handle AT_EXECFN. * sysdeps/unix/sysv/linux/kernel-features.h: Define __ASSUME_AT_EXECFN for 2.6.27 and up. * sysdeps/generic/ldsodefs.h (rtld_global_ro): Add _dl_execfn. Don't define _dl_origin_path if __ASSUME_AT_EXECFN is defined. * sysdeps/unix/sysv/linux/dl-origin.c (_dl_get_origin): Use _dl_execfn if available and avoid compatibility code if __ASSUME_AT_EXECFN is defined.
Diffstat (limited to 'elf/dl-support.c')
-rw-r--r--elf/dl-support.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/elf/dl-support.c b/elf/dl-support.c
index 2c11ac6..e5b74fb 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -1,5 +1,5 @@
/* Support for dynamic linking code in static libc.
- Copyright (C) 1996-2005, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1996-2005, 2006, 2007, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -62,8 +62,12 @@ struct link_map *_dl_profile_map;
/* This is the address of the last stack address ever used. */
void *__libc_stack_end;
+#ifndef __ASSUME_AT_EXECFN
/* Path where the binary is found. */
const char *_dl_origin_path;
+#endif
+/* File Name of the executable. */
+const char *_dl_execfn;
/* Nonzero if runtime lookup should not update the .got/.plt. */
int _dl_bind_not;
@@ -216,6 +220,9 @@ _dl_aux_init (ElfW(auxv_t) *av)
__libc_enable_secure = av->a_un.a_val;
__libc_enable_secure_decided = 1;
break;
+ case AT_EXECFN:
+ GLRO(dl_execfn) = (void *) av->a_un.a_val;
+ break;
# ifdef DL_PLATFORM_AUXV
DL_PLATFORM_AUXV
# endif