elf: Add _dl_audit_objclose

It consolidates the code required to call la_objclose audit
callback.

Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.

Reviewed-by: Florian Weimer <fweimer@redhat.com>

diff --git a/elf/dl-audit.c b/elf/dl-audit.c
index 5682427..cb1c3de 100644 (file)
--- a/elf/dl-audit.c
+++ b/elf/dl-audit.c
@@ -85,3 +85,24 @@ _dl_audit_objopen (struct link_map *l, Lmid_t nsid)
       afct = afct->next;
    }
 }
+
+void
+_dl_audit_objclose (struct link_map *l)
+{
+  if (__glibc_likely (GLRO(dl_naudit) == 0)
+      || GL(dl_ns)[l->l_ns]._ns_loaded->l_auditing)
+    return;
+
+  struct audit_ifaces *afct = GLRO(dl_audit);
+  for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
+    {
+      if (afct->objclose != NULL)
+       {
+         struct auditstate *state= link_map_audit_state (l, cnt);
+         /* Return value is ignored.  */
+         afct->objclose (&state->cookie);
+       }
+
+      afct = afct->next;
+    }
+}

diff --git a/elf/dl-close.c b/elf/dl-close.c
index 33c8d04..97f09e6 100644 (file)
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -260,9 +260,6 @@ _dl_close_worker (struct link_map *map, bool force)
   _dl_sort_maps (maps, nloaded, (nsid == LM_ID_BASE), true);
 
   /* Call all termination functions at once.  */
-#ifdef SHARED
-  bool do_audit = GLRO(dl_naudit) > 0 && !ns->_ns_loaded->l_auditing;
-#endif
   bool unload_any = false;
   bool scope_mem_left = false;
   unsigned int unload_global = 0;
@@ -296,22 +293,7 @@ _dl_close_worker (struct link_map *map, bool force)
 
 #ifdef SHARED
          /* Auditing checkpoint: we remove an object.  */
-         if (__glibc_unlikely (do_audit))
-           {
-             struct audit_ifaces *afct = GLRO(dl_audit);
-             for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
-               {
-                 if (afct->objclose != NULL)
-                   {
-                     struct auditstate *state
-                       = link_map_audit_state (imap, cnt);
-                     /* Return value is ignored.  */
-                     (void) afct->objclose (&state->cookie);
-                   }
-
-                 afct = afct->next;
-               }
-           }
+         _dl_audit_objclose (imap);
 #endif
 
          /* This object must not be used anymore.  */

diff --git a/elf/dl-fini.c b/elf/dl-fini.c
index c683884..b789cfb 100644 (file)
--- a/elf/dl-fini.c
+++ b/elf/dl-fini.c
@@ -146,21 +146,7 @@ _dl_fini (void)
 
 #ifdef SHARED
                  /* Auditing checkpoint: another object closed.  */
-                 if (!do_audit && __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)
-                           {
-                             struct auditstate *state
-                               = link_map_audit_state (l, cnt);
-                             /* Return value is ignored.  */
-                             (void) afct->objclose (&state->cookie);
-                           }
-                         afct = afct->next;
-                       }
-                   }
+                 _dl_audit_objclose (l);
 #endif
                }
 

diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 4411a5b..2c9c615 100644 (file)
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -1417,6 +1417,10 @@ void _dl_audit_activity_nsid (Lmid_t nsid, int action)
    namespace identification NSID.  */
 void _dl_audit_objopen (struct link_map *l, Lmid_t nsid)
   attribute_hidden;
+
+/* Call the la_objclose from the audit modules for the link_map L.  */
+void _dl_audit_objclose (struct link_map *l)
+  attribute_hidden;
 #endif /* SHARED */
 
 #if PTHREAD_IN_LIBC && defined SHARED