mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 18:40:14 +00:00
f0f1bf8536
Thu Sep 12 03:35:27 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/i386/Dist: Remove init-first.h. * sysdeps/unix/sysv/linux/m68k/Dist: Likewise. * sysdeps/unix/sysv/linux/Dist: Add init-first.h. 1996-09-11 Paul Eggert <eggert@twinsun.com> * strftime.c (strftime): Handle E and O modifiers, required for POSIX.2 and XPG4. Don't use sprintf to format numbers; this way, we can handle time_t correctly regardless of whether it's signed. Don't dump core if format ends in %. In default %c format, use %e instead of %d, for POSIX.2 compatibility. For %z: Use tm_gmtoff if available. Output nothing if tm_isdst is negative. Output correct value even if arg is 1969-12-31 23:59:59 UTC. Don't assume that UTC offset is less than 24 hours; Posix requires support for 24 hours, and there's no point limiting it at all. (HAVE_TM_GMTOFF, TYPE_SIGNED, INT_STRLEN_BOUND): New macros. (CHAR_BIT): Define if <limits.h> doesn't. (tm_diff): New function. (fmt, <stdio.h>): Remove; no longer used. Thu Sep 12 02:21:44 1996 Ulrich Drepper <drepper@cygnus.com> * db/Makefile: Add extra-libs-others variable so that shared library is built in `others' pass. * elf/Makefile: Likewise. * math/Makefile: Likewise. * resolv/Makefile: Likewise. * Makefile (generated): Add version.info.h. * time/checktab.awk: New file. From ADO 96k. * time/iso3166.tab: Likewise. * time/tzselect.ksh: Likewise. * time/zone.tab: Likewise. * stdio-common/vfprintf.c: Correct cleanup registration. We cannot use a macro 1996-09-11 Paul Eggert <eggert@twinsun.com> * time/time.h (tm_gmtoff, tm_zone): Prefix with `__' unless __USE_BSD; this is required for ANSI C compatibility. * manual/time.texi: Replace GMT by UTC, daylight savings by daylight saving, timezone by time zone. Rewrite description of %V to match ISO 8601. Fix TZ Posix string example for US Eastern time. Explain tzname[1] when DST isn't used. Explain tzname when multiple abbreviations used (e.g. EST/EWT/EDT). Explain that timezone's sign is opposite from tm_gmtoff, and that timezone lacks DST adjustment whereas tm_gmtoff has it. Deprecate tzname and timezone. Tue Sep 10 14:46:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> Implement Roland McGrath's idea of how to put an .interp into shared libraries. * interp.c: New file. * Makerules (interp-obj): New object, linked into every shared library. (common-generated): Add interp.so. (CFLAGS-interp.c): Pass name of interpreter. Tue Sep 10 21:09:35 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * db/Makefile: Fix typo. Tue Sep 10 19:29:53 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * nss/db-Makefile ($(VAR_DB)/passwd.db): Look for multiple occurences of the same uid, and only generate a mapping for the first one. Tue Sep 10 03:14:59 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/system.c: New file, to override sysdeps/unix/system.c. Tue Sep 10 15:05:40 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makefile (before-compile): Add version-info.h, needed to build version.d. Tue Sep 10 14:14:33 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/m68k/sysdep.S: Remove check for EWOULDBLOCK, never true on Linux. (__errno_location): New function. [_LIBC_REENTRANT]: Set errno using __errno_location function. * sysdeps/unix/sysv/linux/m68k/sysdep.h [PIC]: Add second syscall_error handler for reentrant libc. Tue Sep 10 13:27:49 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/Makefile (extra-objs): Add eval.so to get dependencies. Wed Sep 11 04:40:57 1996 Ulrich Drepper <drepper@cygnus.com> * time/tzset.c (__tzname_cur_max): Use type `size_t' to avoid warning. * time/tzfile.c (compute_tzname_max): Likewise.
173 lines
5.3 KiB
C
173 lines
5.3 KiB
C
/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
|
|
Copyright (C) 1996 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
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <link.h>
|
|
#include <stddef.h>
|
|
#include <sys/mman.h>
|
|
|
|
/* System-dependent function to read a file's whole contents
|
|
in the most convenient manner available. */
|
|
extern void *_dl_sysdep_read_whole_file (const char *filename,
|
|
size_t *filesize_ptr,
|
|
int mmap_prot);
|
|
|
|
#define CACHEMAGIC "ld.so-1.7.0"
|
|
|
|
struct cache_file
|
|
{
|
|
char magic[sizeof CACHEMAGIC - 1];
|
|
unsigned int nlibs;
|
|
struct
|
|
{
|
|
int flags; /* This is 1 for an ELF library. */
|
|
unsigned int key, value; /* String table indices. */
|
|
} libs[0];
|
|
};
|
|
|
|
/* Look up NAME in ld.so.cache and return the file name stored there,
|
|
or null if none is found. */
|
|
|
|
const char *
|
|
_dl_load_cache_lookup (const char *name)
|
|
{
|
|
static struct cache_file *cache;
|
|
static size_t cachesize;
|
|
unsigned int i;
|
|
|
|
if (cache == (void *) -1)
|
|
/* Previously looked for the cache file and didn't find it. */
|
|
return NULL;
|
|
|
|
if (cache == NULL)
|
|
{
|
|
/* Read the contents of the file. */
|
|
void *file = _dl_sysdep_read_whole_file ("/etc/ld.so.cache", &cachesize,
|
|
PROT_READ);
|
|
if (file && cachesize > sizeof *cache &&
|
|
!memcmp (file, CACHEMAGIC, sizeof CACHEMAGIC - 1))
|
|
/* Looks ok. */
|
|
cache = file;
|
|
else
|
|
{
|
|
if (file)
|
|
__munmap (file, cachesize);
|
|
cache = (void *) -1;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < cache->nlibs; ++i)
|
|
if (cache->libs[i].flags == 1 && /* ELF library entry. */
|
|
/* Make sure string table indices are not bogus before using them. */
|
|
cache->libs[i].key < cachesize - sizeof *cache &&
|
|
cache->libs[i].value < cachesize - sizeof *cache &&
|
|
/* Does the name match? */
|
|
! strcmp (name, ((const char *) &cache->libs[cache->nlibs] +
|
|
cache->libs[i].key)))
|
|
return (const char *) &cache->libs[cache->nlibs] + cache->libs[i].value;
|
|
|
|
return NULL;
|
|
}
|
|
/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
|
|
Copyright (C) 1996 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
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <link.h>
|
|
#include <stddef.h>
|
|
#include <sys/mman.h>
|
|
|
|
/* System-dependent function to read a file's whole contents
|
|
in the most convenient manner available. */
|
|
extern void *_dl_sysdep_read_whole_file (const char *filename,
|
|
size_t *filesize_ptr,
|
|
int mmap_prot);
|
|
|
|
#define CACHEMAGIC "ld.so-1.7.0"
|
|
|
|
struct cache_file
|
|
{
|
|
char magic[sizeof CACHEMAGIC - 1];
|
|
unsigned int nlibs;
|
|
struct
|
|
{
|
|
int flags; /* This is 1 for an ELF library. */
|
|
unsigned int key, value; /* String table indices. */
|
|
} libs[0];
|
|
};
|
|
|
|
/* Look up NAME in ld.so.cache and return the file name stored there,
|
|
or null if none is found. */
|
|
|
|
const char *
|
|
_dl_load_cache_lookup (const char *name)
|
|
{
|
|
static struct cache_file *cache;
|
|
static size_t cachesize;
|
|
unsigned int i;
|
|
|
|
if (cache == (void *) -1)
|
|
/* Previously looked for the cache file and didn't find it. */
|
|
return NULL;
|
|
|
|
if (cache == NULL)
|
|
{
|
|
/* Read the contents of the file. */
|
|
void *file = _dl_sysdep_read_whole_file ("/etc/ld.so.cache", &cachesize,
|
|
PROT_READ);
|
|
if (file && cachesize > sizeof *cache &&
|
|
!memcmp (file, CACHEMAGIC, sizeof CACHEMAGIC - 1))
|
|
/* Looks ok. */
|
|
cache = file;
|
|
else
|
|
{
|
|
if (file)
|
|
__munmap (file, cachesize);
|
|
cache = (void *) -1;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < cache->nlibs; ++i)
|
|
if (cache->libs[i].flags == 1 && /* ELF library entry. */
|
|
/* Make sure string table indices are not bogus before using them. */
|
|
cache->libs[i].key < cachesize - sizeof *cache &&
|
|
cache->libs[i].value < cachesize - sizeof *cache &&
|
|
/* Does the name match? */
|
|
! strcmp (name, ((const char *) &cache->libs[cache->nlibs] +
|
|
cache->libs[i].key)))
|
|
return (const char *) &cache->libs[cache->nlibs] + cache->libs[i].value;
|
|
|
|
return NULL;
|
|
}
|