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authorUlrich Drepper <drepper@redhat.com>1999-07-23 22:58:50 +0000
committerUlrich Drepper <drepper@redhat.com>1999-07-23 22:58:50 +0000
commit06535ae9487708dad9048552c9c92828d998a897 (patch)
tree644ca3f36a0aca375c41e6bdded2d3904b8821e9 /elf/dl-open.c
parentfc9cfb28c05def1bfc0edc099d8001f83654fd10 (diff)
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Update.
* posix/unistd.h: Move declaration of __libc_enable_secure to... * include/unistd.h: ...here. * elf/dl-open.c (dl_open_worker): If DST is used in SUID program punt. * elf/dl-deps.c (expand_dst): Likewise. * elf/dynamic-link.h: Set DT_SYMBOLIC, DT_TEXTREL, and DT_BIND_NOW based on DT_FLAGS value. * elf/do-lookup.h: Remove reference_name parameter, add undef_map. Add test for symbols marked STV_HIDDEN. * elf/dl-lookup.c (_dl_lookup_symbol): Remove reference_name parameter, add undef_map. Compute reference_name locally. Update call to do_lookup. (_dl_lookup_symbol_skip): Likewise. (_dl_lookup_versioned_symbol): Likewise. (_dl_lookup_versioned_symbol_skip): Likewise. * elf/dl-libc.c: Update call to _dl_lookup_*symbol. * elf/dl-runtime.c: Likewise. * elf/dl-sym.c: Likewise. * elf/dl-symbol.c: Likewise. * elf/ldsodefs.h: Adjust prototypes. * elf/dl-reloc.c (RESOLV): Add test for STV_PROTECTED flag set and handle appropriately. Add comment about DT_TEXTREL. * elf/dl-runtime.c: Likewise.
Diffstat (limited to 'elf/dl-open.c')
-rw-r--r--elf/dl-open.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/elf/dl-open.c b/elf/dl-open.c
index a3cd8a0..097fd37 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -20,9 +20,10 @@
#include <assert.h>
#include <dlfcn.h>
#include <errno.h>
+#include <libintl.h>
#include <stdlib.h>
#include <string.h>
-#include <libintl.h>
+#include <unistd.h>
#include <sys/mman.h> /* Check whether MAP_COPY is defined. */
#include <sys/param.h>
#include <bits/libc-lock.h>
@@ -100,6 +101,12 @@ dl_open_worker (void *a)
struct link_map *call_map;
char *new_file;
+ /* DSTs must not appear in SUID/SGID programs. */
+ if (__libc_enable_secure)
+ /* This is an error. */
+ _dl_signal_error (0, "dlopen",
+ "DST not allowed in SUID/SGID programs");
+
/* We have to find out from which object the caller is calling.
Find the highest-addressed object that ADDRESS is not below. */
call_map = NULL;