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* elf/elf.h: Define AT_EXECFN.

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* 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.
This commit is contained in:
Ulrich Drepper
2008-07-24 18:33:44 +00:00
parent 579cdf5a47
commit 0e077a7eea
8 changed files with 77 additions and 20 deletions
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7
sysdeps/unix/sysv/linux/kernel-features.h
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@ -1,6 +1,6 @@
/* Set flags signalling availability of kernel features based on given
kernel version number.
Copyright (C) 1999-2006, 2007 Free Software Foundation, Inc.
Copyright (C) 1999-2006, 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
@ -492,3 +492,8 @@
#if __LINUX_KERNEL_VERSION >= 0x020618
# define __ASSUME_ADJ_OFFSET_SS_READ 1
#endif
/* Support for AT_EXECFN was added in 2.6.27. */
#if __LINUX_KERNEL_VERSION >= 0x02061b
# define __ASSUME_AT_EXECFN 1
#endif