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Update.

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* 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.
This commit is contained in:
Ulrich Drepper
1999-07-23 22:58:50 +00:00
parent fc9cfb28c0
commit 06535ae948
14 changed files with 194 additions and 113 deletions
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9
elf/dl-open.c
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@ -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;