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authorUlrich Drepper <drepper@redhat.com>1999-06-09 11:42:30 +0000
committerUlrich Drepper <drepper@redhat.com>1999-06-09 11:42:30 +0000
commitc41baa797637904ab405f14b78e722176abbdca1 (patch)
tree720faabeff78ecdd3175c541e6a7be15152f82e1 /sysdeps/generic
parentc4db7573223ad5add43eaf89b08829a0225a8a03 (diff)
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Update.
1999-06-09 Jakub Jelinek <jj@ultra.linux.cz> * stdlib/longlong.h: gas changed sethi handling when without %hi(). Fix assembly. * sysdeps/generic/dl-cache.c (_dl_cache_lookup): Allow port specific cache id checks. * sysdeps/generic/dl-cache.h: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/dl-cache.h: New file.
Diffstat (limited to 'sysdeps/generic')
-rw-r--r--sysdeps/generic/dl-cache.c16
-rw-r--r--sysdeps/generic/dl-cache.h23
2 files changed, 33 insertions, 6 deletions
diff --git a/sysdeps/generic/dl-cache.c b/sysdeps/generic/dl-cache.c
index 582afb5..36d3dc3 100644
--- a/sysdeps/generic/dl-cache.c
+++ b/sysdeps/generic/dl-cache.c
@@ -20,6 +20,7 @@
#include <unistd.h>
#include <elf/ldsodefs.h>
#include <sys/mman.h>
+#include <dl-cache.h>
/* System-dependent function to read a file's whole contents
in the most convenient manner available. */
@@ -48,9 +49,12 @@ struct cache_file
static struct cache_file *cache;
static size_t cachesize;
+/* 1 if cache_data + PTR points into the cache. */
+#define _dl_cache_verify_ptr(ptr) (ptr < cachesize - sizeof *cache)
+
/* This is the cache ID we expect. Normally it is 3 for glibc linked
binaries. */
-int _dl_correct_cache_id = 3;
+int _dl_correct_cache_id = _DL_CACHE_DEFAULT_ID;
/* Helper function which must match the one in ldconfig, so that
we rely on the same sort order. */
@@ -146,7 +150,7 @@ _dl_load_cache_lookup (const char *name)
while (left <= right)
{
/* Make sure string table indices are not bogus before using them. */
- if (cache->libs[middle].key >= cachesize - sizeof *cache)
+ if (! _dl_cache_verify_ptr (cache->libs[middle].key))
{
cmpres = 1;
break;
@@ -177,7 +181,7 @@ _dl_load_cache_lookup (const char *name)
while (middle > 0
/* Make sure string table indices are not bogus before
using them. */
- && cache->libs[middle - 1].key < cachesize - sizeof *cache
+ && _dl_cache_verify_ptr (cache->libs[middle - 1].key)
/* Actually compare the entry. */
&& (_dl_cache_libcmp (name,
cache_data + cache->libs[middle - 1].key)
@@ -193,15 +197,15 @@ _dl_load_cache_lookup (const char *name)
/* We haven't seen this string so far. Test whether the
index is ok and whether the name matches. Otherwise
we are done. */
- && (cache->libs[middle].key >= cachesize - sizeof *cache
+ && (! _dl_cache_verify_ptr (cache->libs[middle].key)
|| (_dl_cache_libcmp (name,
cache_data + cache->libs[middle].key)
!= 0)))
break;
flags = cache->libs[middle].flags;
- if ((flags == 1 || flags == 3)
- && cache->libs[middle].value < cachesize - sizeof *cache)
+ if (_dl_cache_check_flags (flags)
+ && _dl_cache_verify_ptr (cache->libs[middle].value))
{
if (best == NULL || flags == _dl_correct_cache_id)
{
diff --git a/sysdeps/generic/dl-cache.h b/sysdeps/generic/dl-cache.h
new file mode 100644
index 0000000..579c261
--- /dev/null
+++ b/sysdeps/generic/dl-cache.h
@@ -0,0 +1,23 @@
+/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
+ Copyright (C) 1999 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#define _DL_CACHE_DEFAULT_ID 3
+
+#define _dl_cache_check_flags(flags) \
+ ((flags) == 1 || (flags) == _DL_CACHE_DEFAULT_ID)