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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-close.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-close.c')
-rw-r--r--elf/dl-close.c110
1 files changed, 85 insertions, 25 deletions
diff --git a/elf/dl-close.c b/elf/dl-close.c
index c823b17642..cf926ae566 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <bits/libc-lock.h>
 #include <ldsodefs.h>
 #include <sys/types.h>
@@ -99,7 +100,6 @@ remove_slotinfo (size_t idx, struct dtv_slotinfo_list *listp, size_t disp,
 
 
 void
-internal_function
 _dl_close (void *_map)
 {
   struct reldep_list
@@ -112,6 +112,7 @@ _dl_close (void *_map)
   } *reldeps = NULL;
   struct link_map **list;
   struct link_map *map = _map;
+  Lmid_t ns = map->l_ns;
   unsigned int i;
   unsigned int *new_opencount;
 #ifdef USE_TLS
@@ -139,8 +140,8 @@ _dl_close (void *_map)
     {
       /* There are still references to this object.  Do nothing more.  */
       if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_FILES, 0))
-	GLRO(dl_debug_printf) ("\nclosing file=%s; opencount == %u\n",
-				map->l_name, map->l_opencount);
+	_dl_debug_printf ("\nclosing file=%s; opencount == %u\n",
+			  map->l_name, map->l_opencount);
 
       /* Decrement the object's reference counter, not the dependencies'.  */
       --map->l_opencount;
@@ -268,13 +269,17 @@ _dl_close (void *_map)
   for (i = 0; list[i] != NULL; ++i)
     {
       struct link_map *imap = list[i];
+
+      /* All elements must be in the same namespace.  */
+      assert (imap->l_ns == ns);
+
       if (new_opencount[i] == 0 && imap->l_type == lt_loaded
 	  && (imap->l_flags_1 & DF_1_NODELETE) == 0)
 	{
 	  /* When debugging print a message first.  */
 	  if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
-	    GLRO(dl_debug_printf) ("\ncalling fini: %s [%lu]\n\n",
-				   imap->l_name, imap->l_ns);
+	    _dl_debug_printf ("\ncalling fini: %s [%lu]\n\n",
+			      imap->l_name, ns);
 
 	  /* Call its termination function.  Do not do it for
 	     half-cooked objects.  */
@@ -299,6 +304,22 @@ _dl_close (void *_map)
 			 + imap->l_info[DT_FINI]->d_un.d_ptr))) ();
 	    }
 
+#ifdef SHARED
+	  /* Auditing checkpoint: we have a new object.  */
+	  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 (&imap->l_audit[cnt].cookie);
+
+		  afct = afct->next;
+		}
+	    }
+#endif
+
 	  /* This object must not be used anymore.  We must remove the
 	     reference from the scope.  */
 	  unsigned int j;
@@ -365,9 +386,30 @@ _dl_close (void *_map)
       assert (imap->l_type == lt_loaded || imap->l_opencount > 0);
     }
 
+#ifdef SHARED
+  /* Auditing checkpoint: we will start deleting objects.  */
+  if (__builtin_expect (GLRO(dl_naudit) > 0, 0))
+    {
+      struct link_map *head = GL(dl_ns)[ns]._ns_loaded;
+      struct audit_ifaces *afct = GLRO(dl_audit);
+      /* Do not call the functions for any auditing object.  */
+      if (head->l_auditing == 0)
+	{
+	  for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
+	    {
+	      if (afct->activity != NULL)
+		afct->activity (&head->l_audit[cnt].cookie, LA_ACT_DELETE);
+
+	      afct = afct->next;
+	    }
+	}
+    }
+#endif
+
   /* Notify the debugger we are about to remove some loaded objects.  */
-  _r_debug.r_state = RT_DELETE;
-  GLRO(dl_debug_state) ();
+  struct r_debug *r = _dl_debug_initialize (0);
+  r->r_state = RT_DELETE;
+  _dl_debug_state ();
 
 #ifdef USE_TLS
   size_t tls_free_start;
@@ -389,21 +431,19 @@ _dl_close (void *_map)
 	  if (__builtin_expect (imap->l_global, 0))
 	    {
 	      /* This object is in the global scope list.  Remove it.  */
-	      unsigned int cnt
-		= GL(dl_ns)[imap->l_ns]._ns_main_searchlist->r_nlist;
+	      unsigned int cnt = GL(dl_ns)[ns]._ns_main_searchlist->r_nlist;
 
 	      do
 		--cnt;
-	      while (GL(dl_ns)[imap->l_ns]._ns_main_searchlist->r_list[cnt]
-		     != imap);
+	      while (GL(dl_ns)[ns]._ns_main_searchlist->r_list[cnt] != imap);
 
 	      /* The object was already correctly registered.  */
 	      while (++cnt
-		     < GL(dl_ns)[imap->l_ns]._ns_main_searchlist->r_nlist)
-		GL(dl_ns)[imap->l_ns]._ns_main_searchlist->r_list[cnt - 1]
-		  = GL(dl_ns)[imap->l_ns]._ns_main_searchlist->r_list[cnt];
+		     < GL(dl_ns)[ns]._ns_main_searchlist->r_nlist)
+		GL(dl_ns)[ns]._ns_main_searchlist->r_list[cnt - 1]
+		  = GL(dl_ns)[ns]._ns_main_searchlist->r_list[cnt];
 
-	      --GL(dl_ns)[imap->l_ns]._ns_main_searchlist->r_nlist;
+	      --GL(dl_ns)[ns]._ns_main_searchlist->r_nlist;
 	    }
 
 #ifdef USE_TLS
@@ -412,9 +452,10 @@ _dl_close (void *_map)
 	    {
 	      any_tls = true;
 
-	      if (! remove_slotinfo (imap->l_tls_modid,
-				     GL(dl_tls_dtv_slotinfo_list), 0,
-				     imap->l_init_called))
+	      if (GL(dl_tls_dtv_slotinfo_list) != NULL
+		  && ! remove_slotinfo (imap->l_tls_modid,
+					GL(dl_tls_dtv_slotinfo_list), 0,
+					imap->l_init_called))
 		/* All dynamically loaded modules with TLS are unloaded.  */
 		GL(dl_tls_max_dtv_idx) = GL(dl_tls_static_nelem);
 
@@ -499,12 +540,12 @@ _dl_close (void *_map)
 	  else
 	    {
 #ifdef SHARED
-	      assert (imap->l_ns != LM_ID_BASE);
+	      assert (ns != LM_ID_BASE);
 #endif
-	      GL(dl_ns)[imap->l_ns]._ns_loaded = imap->l_next;
+	      GL(dl_ns)[ns]._ns_loaded = imap->l_next;
 	    }
 
-	  --GL(dl_ns)[imap->l_ns]._ns_nloaded;
+	  --GL(dl_ns)[ns]._ns_nloaded;
 	  if (imap->l_next != NULL)
 	    imap->l_next->l_prev = imap->l_prev;
 
@@ -579,16 +620,36 @@ _dl_close (void *_map)
   if (any_tls)
     {
       if (__builtin_expect (++GL(dl_tls_generation) == 0, 0))
-	__libc_fatal (_("TLS generation counter wrapped!  Please report as described in <http://www.gnu.org/software/libc/bugs.html>."));
+	_dl_fatal_printf ("TLS generation counter wrapped!  Please report as described in <http://www.gnu.org/software/libc/bugs.html>.\n");
 
       if (tls_free_end == GL(dl_tls_static_used))
 	GL(dl_tls_static_used) = tls_free_start;
     }
 #endif
 
+#ifdef SHARED
+  /* Auditing checkpoint: we have deleted all objects.  */
+  if (__builtin_expect (GLRO(dl_naudit) > 0, 0))
+    {
+      struct link_map *head = GL(dl_ns)[ns]._ns_loaded;
+      /* Do not call the functions for any auditing object.  */
+      if (head->l_auditing == 0)
+	{
+	  struct audit_ifaces *afct = GLRO(dl_audit);
+	  for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
+	    {
+	      if (afct->activity != NULL)
+		afct->activity (&head->l_audit[cnt].cookie, LA_ACT_CONSISTENT);
+
+	      afct = afct->next;
+	    }
+	}
+    }
+#endif
+
   /* Notify the debugger those objects are finalized and gone.  */
-  _r_debug.r_state = RT_CONSISTENT;
-  GLRO(dl_debug_state) ();
+  r->r_state = RT_CONSISTENT;
+  _dl_debug_state ();
 
   /* Now we can perhaps also remove the modules for which we had
      dependencies because of symbol lookup.  */
@@ -612,7 +673,6 @@ _dl_close (void *_map)
   /* Release the lock.  */
   __rtld_lock_unlock_recursive (GL(dl_load_lock));
 }
-libc_hidden_def (_dl_close)
 
 
 #ifdef USE_TLS