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[BZ #2451]

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2006-03-13  Jakub Jelinek  <jakub@redhat.com>
	[BZ #2451]
	* elf/dl-load.c (open_verify): Add free_name argument, if true, free
	name before calling lose.
	(open_path): Adjust caller.
	(_dl_map_object): Adjust callers.  Free name_copy before calling
	_dl_signal_error.
	* elf/Makefile: Add rules to build and run tst-leaks1.
	* elf/tst-leaks1.c: New test.
This commit is contained in:
Ulrich Drepper 2006-03-15 19:26:13 +00:00
parent facac085dc
commit 2e0fc40cc4
4 changed files with 62 additions and 9 deletions
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11
ChangeLog
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@ -1,3 +1,14 @@
2006-03-13 Jakub Jelinek <jakub@redhat.com>
[BZ #2451]
* elf/dl-load.c (open_verify): Add free_name argument, if true, free
name before calling lose.
(open_path): Adjust caller.
(_dl_map_object): Adjust callers. Free name_copy before calling
_dl_signal_error.
* elf/Makefile: Add rules to build and run tst-leaks1.
* elf/tst-leaks1.c: New test.
2006-03-06 Roland McGrath <roland@redhat.com>
* version.h (VERSION): 2.4

11
elf/Makefile
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@ -91,7 +91,7 @@ distribute := rtld-Rules \
order2mod1.c order2mod2.c order2mod3.c order2mod4.c \
tst-stackguard1.c tst-stackguard1-static.c \
tst-array5.c tst-array5-static.c tst-array5dep.c \
tst-array5.exp
tst-array5.exp tst-leaks1.c
CFLAGS-dl-runtime.c = -fexceptions -fasynchronous-unwind-tables
CFLAGS-dl-lookup.c = -fexceptions -fasynchronous-unwind-tables
@ -139,7 +139,7 @@ vpath %.c ../locale/programs
endif
endif
tests = tst-tls1 tst-tls2 tst-tls9
tests = tst-tls1 tst-tls2 tst-tls9 tst-leaks1
ifeq (yes,$(have-initfini-array))
tests += tst-array1 tst-array2 tst-array3 tst-array4 tst-array5
endif
@ -180,6 +180,7 @@ endif
ifeq (yesyes,$(have-fpie)$(build-shared))
tests: $(objpfx)tst-pie1.out
endif
tests: $(objpfx)tst-leaks1-mem
modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
testobj1_1 failobj constload2 constload3 unloadmod \
dep1 dep2 dep3 dep4 $(modules-vis-$(have-protected)) \
@ -895,3 +896,9 @@ order2mod2.so-no-z-defs = yes
tst-stackguard1-ARGS = --command "$(built-program-cmd) --child"
tst-stackguard1-static-ARGS = --command "$(objpfx)tst-stackguard1-static --child"
$(objpfx)tst-leaks1: $(libdl)
$(objpfx)tst-leaks1-mem: $(objpfx)tst-leaks1.out
$(common-objpfx)malloc/mtrace $(objpfx)tst-leaks1.mtrace > $@
tst-leaks1-ENV = MALLOC_TRACE=$(objpfx)tst-leaks1.mtrace

25
elf/dl-load.c
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@ -1,5 +1,6 @@
/* Map in a shared object's segments from the file.
Copyright (C) 1995-2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
2005, 2006 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
@ -1554,7 +1555,7 @@ print_search_path (struct r_search_path_elem **list,
user might want to know about this. */
static int
open_verify (const char *name, struct filebuf *fbp, struct link_map *loader,
int whatcode, bool *found_other_class)
int whatcode, bool *found_other_class, bool free_name)
{
/* This is the expected ELF header. */
#define ELF32_CLASS ELFCLASS32
@ -1635,6 +1636,12 @@ open_verify (const char *name, struct filebuf *fbp, struct link_map *loader,
errstring = (errval == 0
? N_("file too short") : N_("cannot read file data"));
call_lose:
if (free_name)
{
char *realname = (char *) name;
name = strdupa (realname);
free (realname);
}
lose (errval, fd, name, NULL, NULL, errstring);
}
@ -1821,7 +1828,8 @@ open_path (const char *name, size_t namelen, int preloaded,
if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_LIBS, 0))
_dl_debug_printf (" trying file=%s\n", buf);
fd = open_verify (buf, fbp, loader, whatcode, found_other_class);
fd = open_verify (buf, fbp, loader, whatcode, found_other_class,
false);
if (this_dir->status[cnt] == unknown)
{
if (fd != -1)
@ -2098,7 +2106,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded,
{
fd = open_verify (cached,
&fb, loader ?: GL(dl_ns)[nsid]._ns_loaded,
LA_SER_CONFIG, &found_other_class);
LA_SER_CONFIG, &found_other_class, false);
if (__builtin_expect (fd != -1, 1))
{
realname = local_strdup (cached);
@ -2136,7 +2144,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded,
{
fd = open_verify (realname, &fb,
loader ?: GL(dl_ns)[nsid]._ns_loaded, 0,
&found_other_class);
&found_other_class, true);
if (__builtin_expect (fd, 0) == -1)
free (realname);
}
@ -2166,8 +2174,11 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded,
if ((name_copy = local_strdup (name)) == NULL
|| (l = _dl_new_object (name_copy, name, type, loader,
mode, nsid)) == NULL)
_dl_signal_error (ENOMEM, name, NULL,
N_("cannot create shared object descriptor"));
{
free (name_copy);
_dl_signal_error (ENOMEM, name, NULL,
N_("cannot create shared object descriptor"));
}
/* Signal that this is a faked entry. */
l->l_faked = 1;
/* Since the descriptor is initialized with zero we do not

24
elf/tst-leaks1.c Normal file
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@ -0,0 +1,24 @@
#include <dlfcn.h>
#include <mcheck.h>
#include <stdlib.h>
int
main (void)
{
mtrace ();
int ret = 0;
for (int i = 0; i < 10; i++)
{
void *h = dlopen (i < 5 ? "./tst-leaks1.c"
: "$ORIGIN/tst-leaks1.o", RTLD_LAZY);
if (h != NULL)
{
puts ("dlopen unexpectedly succeeded");
ret = 1;
dlclose (h);
}
}
return ret;
}