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authorUlrich Drepper <drepper@redhat.com>2005-01-06 22:40:27 +0000
committerUlrich Drepper <drepper@redhat.com>2005-01-06 22:40:27 +0000
commit9dcafc559763e339d4a79580c333127033e39c11 (patch)
tree342441fed429693bc69d95addc588e10a7d021c4 /elf/dl-fini.c
parentf14038f2e295e7994e2317127cdea1cb26db6be1 (diff)
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* csu/elf-init.c (__libc_csu_fini): Don't do anything here.
* sysdeps/generic/libc-start.c: Don't register program destructor here. * dlfcn/Makefile: Add rules to build dlfcn.c. (LDFLAGS-dl.so): Removed. * dlfcn/dlclose.c: _dl_close is now in ld.so, use function pointer table. * dlfcn/dlmopen.c: Likewise for _dl_open. * dlfcn/dlopen.c: Likewise. * dlfcn/dlopenold.c: Likewise. * elf/dl-libc.c: Likewise for _dl_open and _dl_close. * elf/Makefile (routines): Remove dl-open and dl-close. (dl-routines): Add dl-open, dl-close, and dl-trampoline. Add rules to build and run tst-audit1. * elf/tst-audit1.c: New file. * elf/tst-auditmod1.c: New file. * elf/Versions [libc]: Remove _dl_open and _dl_close. * elf/dl-close.c: Change for use inside ld.so instead of libc.so. * elf/dl-open.c: Likewise. * elf/dl-debug.c (_dl_debug_initialize): Allow reinitialization, signaled by nonzero parameter. * elf/dl-init.c: Fix use of r_state. * elf/dl-load.c: Likewise. * elf/dl-close.c: Add auditing checkpoints. * elf/dl-open.c: Likewise. * elf/dl-fini.c: Likewise. * elf/dl-load.c: Likewise. * elf/dl-sym.c: Likewise. * sysdeps/generic/libc-start.c: Likewise. * elf/dl-object.c: Allocate memory for auditing information. * elf/dl-reloc.c: Remove RESOLV. We now always need the map. Correctly initialize slotinfo. * elf/dynamic-link.h: Adjust after removal of RESOLV. * sysdeps/hppa/dl-lookupcfg.h: Likewise. * sysdeps/ia64/dl-lookupcfg.h: Likewise. * sysdeps/powerpc/powerpc64/dl-lookupcfg.h: Removed. * elf/dl-runtime.c (_dl_fixup): Little cleanup. (_dl_profile_fixup): New parameters to point to register struct and variable for frame size. Add auditing checkpoints. (_dl_call_pltexit): New function. Don't define trampoline code here. * elf/rtld.c: Recognize LD_AUDIT. Load modules on startup. Remove all the functions from _rtld_global_ro which only _dl_open and _dl_close needed. Add auditing checkpoints. * elf/link.h: Define symbols for auditing interfaces. * include/link.h: Likewise. * include/dlfcn.h: Define __RTLD_AUDIT. Remove prototypes for _dl_open and _dl_close. Adjust access to argc and argv in libdl. * dlfcn/dlfcn.c: New file. * sysdeps/generic/dl-lookupcfg.h: Remove all content now that RESOLVE is gone. * sysdeps/generic/ldsodefs.h: Add definitions for auditing interfaces. * sysdeps/generic/unsecvars.h: Add LD_AUDIT. * sysdeps/i386/dl-machine.h: Remove trampoline code here. Adjust for removal of RESOLVE. * sysdeps/x86_64/dl-machine.h: Likewise. * sysdeps/generic/dl-trampoline.c: New file. * sysdeps/i386/dl-trampoline.c: New file. * sysdeps/x86_64/dl-trampoline.c: New file. * sysdeps/generic/dl-tls.c: Cleanups. Fixup for dtv_t change. Fix updating of DTV. * sysdeps/generic/libc-tls.c: Likewise. * sysdeps/arm/bits/link.h: Renamed to ... * sysdeps/arm/buts/linkmap.h: ...this. * sysdeps/generic/bits/link.h: Renamed to... * sysdeps/generic/bits/linkmap.h: ...this. * sysdeps/hppa/bits/link.h: Renamed to... * sysdeps/hppa/bits/linkmap.h: ...this. * sysdeps/hppa/i386/link.h: Renamed to... * sysdeps/hppa/i386/linkmap.h: ...this. * sysdeps/hppa/ia64/link.h: Renamed to... * sysdeps/hppa/ia64/linkmap.h: ...this. * sysdeps/hppa/s390/link.h: Renamed to... * sysdeps/hppa/s390/linkmap.h: ...this. * sysdeps/hppa/sh/link.h: Renamed to... * sysdeps/hppa/sh/linkmap.h: ...this. * sysdeps/hppa/x86_64/link.h: Renamed to... * sysdeps/hppa/x86_64/linkmap.h: ...this. 2005-01-06 Ulrich Drepper <drepper@redhat.com> * allocatestack.c (init_one_static_tls): Adjust initialization of DTV entry for static tls deallocation fix. * sysdeps/alpha/tls.h (dtv_t): Change pointer type to be struct which also contains information whether the memory pointed to is static TLS or not. * sysdeps/i386/tls.h: Likewise. * sysdeps/ia64/tls.h: Likewise. * sysdeps/powerpc/tls.h: Likewise. * sysdeps/s390/tls.h: Likewise. * sysdeps/sh/tls.h: Likewise. * sysdeps/sparc/tls.h: Likewise. * sysdeps/x86_64/tls.h: Likewise.
Diffstat (limited to 'elf/dl-fini.c')
-rw-r--r--elf/dl-fini.c76
1 files changed, 47 insertions, 29 deletions
diff --git a/elf/dl-fini.c b/elf/dl-fini.c
index f43f4a00ed..8fc5dbf123 100644
--- a/elf/dl-fini.c
+++ b/elf/dl-fini.c
@@ -53,7 +53,12 @@ _dl_fini (void)
/* Protect against concurrent loads and unloads. */
__rtld_lock_lock_recursive (GL(dl_load_lock));
+ unsigned int nmaps = 0;
unsigned int nloaded = GL(dl_ns)[cnt]._ns_nloaded;
+ /* No need to do anything for empty namespaces or those used for
+ auditing DSOs. */
+ if (nloaded == 0 || GL(dl_ns)[cnt]._ns_loaded->l_auditing)
+ goto out;
/* XXX Could it be (in static binaries) that there is no object
loaded? */
@@ -76,6 +81,7 @@ _dl_fini (void)
unsigned int i;
struct link_map *l;
+ assert (nloaded != 0 || GL(dl_ns)[cnt]._ns_loaded == NULL);
for (l = GL(dl_ns)[cnt]._ns_loaded, i = 0; l != NULL; l = l->l_next)
/* Do not handle ld.so in secondary namespaces. */
if (l == l->l_real)
@@ -90,7 +96,7 @@ _dl_fini (void)
}
assert (cnt != LM_ID_BASE || i == nloaded);
assert (cnt == LM_ID_BASE || i == nloaded || i == nloaded - 1);
- unsigned int nmaps = i;
+ nmaps = i;
if (nmaps != 0)
{
@@ -163,6 +169,7 @@ _dl_fini (void)
high and will be decremented in this loop. So we release the
lock so that some code which might be called from a destructor
can directly or indirectly access the lock. */
+ out:
__rtld_lock_unlock_recursive (GL(dl_load_lock));
/* 'maps' now contains the objects in the right order. Now call the
@@ -176,38 +183,49 @@ _dl_fini (void)
/* Make sure nothing happens if we are called twice. */
l->l_init_called = 0;
- /* Don't call the destructors for objects we are not
- supposed to. */
- if (l->l_name[0] == '\0' && l->l_type == lt_executable)
- continue;
-
/* Is there a destructor function? */
- if (l->l_info[DT_FINI_ARRAY] == NULL
- && l->l_info[DT_FINI] == NULL)
- continue;
-
- /* When debugging print a message first. */
- if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_IMPCALLS,
- 0))
- _dl_debug_printf ("\ncalling fini: %s [%lu]\n\n",
- l->l_name[0] ? l->l_name : rtld_progname,
- cnt);
-
- /* First see whether an array is given. */
- if (l->l_info[DT_FINI_ARRAY] != NULL)
+ if (l->l_info[DT_FINI_ARRAY] != NULL
+ || l->l_info[DT_FINI] != NULL)
{
- ElfW(Addr) *array =
- (ElfW(Addr) *) (l->l_addr
- + l->l_info[DT_FINI_ARRAY]->d_un.d_ptr);
- unsigned int i = (l->l_info[DT_FINI_ARRAYSZ]->d_un.d_val
- / sizeof (ElfW(Addr)));
- while (i-- > 0)
- ((fini_t) array[i]) ();
+ /* When debugging print a message first. */
+ if (__builtin_expect (GLRO(dl_debug_mask)
+ & DL_DEBUG_IMPCALLS, 0))
+ _dl_debug_printf ("\ncalling fini: %s [%lu]\n\n",
+ l->l_name[0] ? l->l_name : rtld_progname,
+ cnt);
+
+ /* First see whether an array is given. */
+ if (l->l_info[DT_FINI_ARRAY] != NULL)
+ {
+ ElfW(Addr) *array =
+ (ElfW(Addr) *) (l->l_addr
+ + l->l_info[DT_FINI_ARRAY]->d_un.d_ptr);
+ unsigned int i = (l->l_info[DT_FINI_ARRAYSZ]->d_un.d_val
+ / sizeof (ElfW(Addr)));
+ while (i-- > 0)
+ ((fini_t) array[i]) ();
+ }
+
+ /* Next try the old-style destructor. */
+ if (l->l_info[DT_FINI] != NULL)
+ ((fini_t) DL_DT_FINI_ADDRESS (l, l->l_addr + l->l_info[DT_FINI]->d_un.d_ptr)) ();
}
- /* Next try the old-style destructor. */
- if (l->l_info[DT_FINI] != NULL)
- ((fini_t) DL_DT_FINI_ADDRESS (l, l->l_addr + l->l_info[DT_FINI]->d_un.d_ptr)) ();
+#ifdef SHARED
+ /* Auditing checkpoint: another object closed. */
+ if (__builtin_expect (GLRO(dl_naudit) > 0, 0))
+ {
+ struct audit_ifaces *afct = GLRO(dl_audit);
+ for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
+ {
+ if (afct->objclose != NULL)
+ /* Return value is ignored. */
+ (void) afct->objclose (&l->l_audit[cnt].cookie);
+
+ afct = afct->next;
+ }
+ }
+#endif
}
/* Correct the previous increment. */