846c6907d0
* sysdeps/unix/sysv/linux/ldsodefs.h (HAVE_AUX_XID): Define if __ASSUME_AT_XID is defined. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_AT_XID): Define for 2.4.1 and up. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Optimize handling of AT_UID, AT_EUID, AT_GID, and AT_EGID.
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/* Run-time dynamic linker data structures for loaded ELF shared objects.
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Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _LDSODEFS_H
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#include "kernel-features.h"
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/* Get the real definitions. */
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#include_next <ldsodefs.h>
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/* Now define our stuff. */
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/* We have the auxiliary vector. */
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#define HAVE_AUX_VECTOR
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/* Used by static binaries to check the auxiliary vector. */
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extern void _dl_aux_init (ElfW(auxv_t) *av) internal_function;
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/* Initialization which is normally done by the dynamic linker. */
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extern void _dl_non_dynamic_init (void) internal_function;
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/* We can assume that the kernel always provides the AT_UID, AT_EUID,
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AT_GID, and AT_EGID values in the auxiliary vector from 2.4.0 or so on. */
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#if __ASSUME_AT_XID
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# define HAVE_AUX_XID
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#endif
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/* Starting with one of the 2.4.0 pre-releases the Linux kernel passes
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up the page size information. */
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#if __ASSUME_AT_PAGESIZE
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# define HAVE_AUX_PAGESIZE
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#endif
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#endif /* ldsodefs.h */
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