diff options
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/Makefile | 11 | ||||
| -rw-r--r-- | elf/dl-load.c | 25 | ||||
| -rw-r--r-- | elf/tst-leaks1.c | 24 |
3 files changed, 51 insertions, 9 deletions
diff --git a/elf/Makefile b/elf/Makefile index 7913417..5e45930 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -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 diff --git a/elf/dl-load.c b/elf/dl-load.c index bba1c83..088954a 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -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 diff --git a/elf/tst-leaks1.c b/elf/tst-leaks1.c new file mode 100644 index 0000000..c9db5e0 --- /dev/null +++ b/elf/tst-leaks1.c @@ -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; +} |