Sat Jul 27 02:58:49 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/rtld.c (dl_main): Take new option --verify when run directly.
In verify mode, exit with status zero iff the argument object's
PT_INTERP matches argv[0].
* elf/ldd.sh.in: Use ${RTLD} --verify and only run the program if it
exits with zero status. This makes `ldd' secure again.
Fri Jul 26 22:49:58 1996 Ulrich Drepper <drepper@cygnus.com>
* elf/rtld.c (dl_main): Implement LD_TRACE_LOADED_OBJECTS
environment variable handling. This makes the dynamic linker
only print loaded libraries and quit.
* elf/ldd.sh.in: Don't use `rtld --list' but instead
LD_TRACE_LOADED_OBJECTS environment variable to print needed
objects.
Sat Jul 27 02:03:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* db/makedb.c (main): Print version on stdout, not stderr. Don't exit
after printing version until after doing usage for --help.
(long_options, main, usage): Rename -l/--lowercase option to
-f/--fold-case (-f matches sort).
Sat Jul 27 04:32:31 1996 Ulrich Drepper <drepper@cygnus.com>
* db/makedb.c: New file. Implement program to create simple <db.h>
database from textual input. This will be used for nss_db.
Sat Jul 27 01:24:05 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sunrpc/rpc/auth_unix.h: Fix misapplied patches in last changes.
* sunrpc/rpc/pmap_clnt.h: Likewise.
* sunrpc/rpc/auth.h: Likewise.
* sunrpc/rpc/pmap_rmt.h: Likewise.
* sunrpc/rpc/rpc_msg.h: Likewise.
Sat Jul 27 04:37:34 1996 Ulrich Drepper <drepper@cygnus.com>
* string/string.h (strndupa): Change to use return value of
`memcpy' for more performance.
* string/strndup.c: Likewise.
* string/string.h (strdupa): Don't call __builtin_alloca in argument.
This might lead to problems.
(strndupa): Likewise.
This commit is contained in:
Roland McGrath
parent
fc933e284e
commit
61965e9b17
48
ChangeLog
48
ChangeLog
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@ -1,3 +1,51 @@
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Sat Jul 27 02:58:49 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
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* elf/rtld.c (dl_main): Take new option --verify when run directly.
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In verify mode, exit with status zero iff the argument object's
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PT_INTERP matches argv[0].
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* elf/ldd.sh.in: Use ${RTLD} --verify and only run the program if it
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exits with zero status. This makes `ldd' secure again.
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Fri Jul 26 22:49:58 1996 Ulrich Drepper <drepper@cygnus.com>
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* elf/rtld.c (dl_main): Implement LD_TRACE_LOADED_OBJECTS
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environment variable handling. This makes the dynamic linker
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only print loaded libraries and quit.
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* elf/ldd.sh.in: Don't use `rtld --list' but instead
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LD_TRACE_LOADED_OBJECTS environment variable to print needed
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objects.
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Sat Jul 27 02:03:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
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* db/makedb.c (main): Print version on stdout, not stderr. Don't exit
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after printing version until after doing usage for --help.
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(long_options, main, usage): Rename -l/--lowercase option to
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-f/--fold-case (-f matches sort).
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Sat Jul 27 04:32:31 1996 Ulrich Drepper <drepper@cygnus.com>
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* db/makedb.c: New file. Implement program to create simple <db.h>
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database from textual input. This will be used for nss_db.
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Sat Jul 27 01:24:05 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
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* sunrpc/rpc/auth_unix.h: Fix misapplied patches in last changes.
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* sunrpc/rpc/pmap_clnt.h: Likewise.
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* sunrpc/rpc/auth.h: Likewise.
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* sunrpc/rpc/pmap_rmt.h: Likewise.
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* sunrpc/rpc/rpc_msg.h: Likewise.
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Sat Jul 27 04:37:34 1996 Ulrich Drepper <drepper@cygnus.com>
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* string/string.h (strndupa): Change to use return value of
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`memcpy' for more performance.
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* string/strndup.c: Likewise.
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* string/string.h (strdupa): Don't call __builtin_alloca in argument.
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This might lead to problems.
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(strndupa): Likewise.
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Fri Jul 26 15:24:25 1996 Ulrich Drepper <drepper@cygnus.com>
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* sunrpc/rpc/auth.h: Add protection against multiple inclusion
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@ -17,7 +17,11 @@ case $# in
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/*) file="$1" ;;
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*) file="./$1" ;;
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esac
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exec ${RTLD} --list "$file" && exit 1
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if ${RTLD} --verify "$file"; then
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LD_TRACE_LOADED_OBJECTS=1 exec "$file" && exit 1
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else
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echo ' not a dynamic executable'
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fi
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exit ;;
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*)
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set -e # Bail out immediately if ${RTLD} loses on any argument.
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@ -27,7 +31,11 @@ case $# in
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/*) file="$file" ;;
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*) file="./$file" ;;
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esac
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${RTLD} --list "$file"
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if ${RTLD} --verify "$file"; then
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LD_TRACE_LOADED_OBJECTS=1 "$file"
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else
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echo ' not a dynamic executable'
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fi
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done
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esac
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25
elf/rtld.c
25
elf/rtld.c
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@ -127,7 +127,7 @@ dl_main (const ElfW(Phdr) *phdr,
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const ElfW(Phdr) *ph;
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struct link_map *l;
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int lazy;
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int list_only = 0;
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enum { normal, list, verify } mode = normal;
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struct link_map **preloads;
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unsigned int npreloads;
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@ -150,7 +150,7 @@ dl_main (const ElfW(Phdr) *phdr,
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installing it. */
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if (_dl_argc < 2)
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_dl_sysdep_fatal ("\
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Usage: ld.so [--list] EXECUTABLE-FILE [ARGS-FOR-PROGRAM...]\n\
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Usage: ld.so [--list|--verify] EXECUTABLE-FILE [ARGS-FOR-PROGRAM...]\n\
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You have invoked `ld.so', the helper program for shared library executables.\n\
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This program usually lives in the file `/lib/ld.so', and special directives\n\
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in executable files using ELF shared libraries tell the system's program\n\
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@ -169,7 +169,15 @@ of this helper program; chances are you did not intend to run this program.\n",
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if (! strcmp (_dl_argv[1], "--list"))
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{
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list_only = 1;
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mode = list;
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++_dl_skip_args;
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--_dl_argc;
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++_dl_argv;
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}
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else if (! strcmp (_dl_argv[1], "--verify"))
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{
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mode = verify;
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++_dl_skip_args;
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--_dl_argc;
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@ -235,6 +243,12 @@ of this helper program; chances are you did not intend to run this program.\n",
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else
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assert (_dl_rtld_map.l_libname); /* How else did we get here? */
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if (mode == verify)
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/* We were called just to verify that this is a dynamic executable
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using us as the program interpreter. */
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_exit (strcmp (_dl_rtld_map.l_libname, _dl_rtld_map.l_name)
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? EXIT_FAILURE : EXIT_SUCCESS);
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/* Extract the contents of the dynamic section for easy access. */
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elf_get_dynamic_info (l->l_ld, l->l_info);
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if (l->l_info[DT_HASH])
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@ -326,7 +340,10 @@ of this helper program; chances are you did not intend to run this program.\n",
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}
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}
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if (list_only)
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if (mode == normal && getenv ("LD_TRACE_LOADED_OBJECTS") != NULL)
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mode = list;
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if (mode != normal)
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{
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/* We were run just to list the shared libraries. It is
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important that we do this before real relocation, because the
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