From 629d7ba9c6d9460e3ace845d7c0455aa9c7eeba0 Mon Sep 17 00:00:00 2001
From: Dale Rahn <drahn@cvs.openbsd.org>
Date: Mon, 23 May 2005 19:22:12 +0000
Subject: fixes for dlclose, ok kettenis@

---
 libexec/ld.so/dlfcn.c          | 31 ++++---------------------------
 libexec/ld.so/library.c        |  9 +--------
 libexec/ld.so/library_mquery.c | 11 +----------
 libexec/ld.so/library_subr.c   | 12 +++++++++++-
 4 files changed, 17 insertions(+), 46 deletions(-)

(limited to 'libexec/ld.so')

diff --git a/libexec/ld.so/dlfcn.c b/libexec/ld.so/dlfcn.c
index 1df2329e36b..72c7400ffb8 100644
--- a/libexec/ld.so/dlfcn.c
+++ b/libexec/ld.so/dlfcn.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dlfcn.c,v 1.47 2005/05/10 03:36:07 drahn Exp $ */
+/*	$OpenBSD: dlfcn.c,v 1.48 2005/05/23 19:22:11 drahn Exp $ */
 
 /*
  * Copyright (c) 1998 Per Fogelstrom, Opsycon AB
@@ -41,9 +41,8 @@
 int _dl_errno;
 
 int _dl_real_close(void *handle);
-void _dl_unload_deps(elf_object_t *object);
 void (*_dl_thread_fnc)(int) = NULL;
-elf_object_t *obj_from_addr(const void *addr);
+static elf_object_t *obj_from_addr(const void *addr);
 
 void *
 dlopen(const char *libname, int flags)
@@ -246,35 +245,13 @@ _dl_real_close(void *handle)
 		return (1);
 	}
 
-	if (object->refcount == 1) {
-		if (dynobj->dep_next)
-			_dl_unload_deps(dynobj);
-	}
-
 	_dl_unlink_dlopen(object);
+	_dl_notify_unload_shlib(object);
+	_dl_run_all_dtors();
 	_dl_unload_shlib(object);
 	return (0);
 }
 
-/*
- * Scan through the shadow dep list and 'unload' every library
- * we depend upon. Shadow objects are removed when removing ourself.
- */
-void
-_dl_unload_deps(elf_object_t *object)
-{
-	elf_object_t *depobj;
-
-	depobj = object->dep_next;
-	while (depobj) {
-		if (depobj->next->refcount == 1) { /* This object will go away */
-			if (depobj->next->dep_next)
-				_dl_unload_deps(depobj->next);
-			_dl_unload_shlib(depobj->next);
-		}
-		depobj = depobj->dep_next;
-	}
-}
 
 /*
  * Return a character string describing the last dl... error occurred.
diff --git a/libexec/ld.so/library.c b/libexec/ld.so/library.c
index b1b3895b91d..37b5eed57f0 100644
--- a/libexec/ld.so/library.c
+++ b/libexec/ld.so/library.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: library.c,v 1.39 2005/05/10 03:36:07 drahn Exp $ */
+/*	$OpenBSD: library.c,v 1.40 2005/05/23 19:22:11 drahn Exp $ */
 
 /*
  * Copyright (c) 2002 Dale Rahn
@@ -54,13 +54,6 @@ _dl_load_list_free(struct load_list *load_list)
 	}
 }
 
-void
-_dl_notify_unload_shlib(elf_object_t *object)
-{
-	if (--object->refcount == 0) {
-		_dl_run_dtors(object);
-	}
-}
 void
 _dl_unload_shlib(elf_object_t *object)
 {
diff --git a/libexec/ld.so/library_mquery.c b/libexec/ld.so/library_mquery.c
index 300978e4372..e01361df8e1 100644
--- a/libexec/ld.so/library_mquery.c
+++ b/libexec/ld.so/library_mquery.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: library_mquery.c,v 1.19 2005/05/10 03:36:07 drahn Exp $ */
+/*	$OpenBSD: library_mquery.c,v 1.20 2005/05/23 19:22:11 drahn Exp $ */
 
 /*
  * Copyright (c) 2002 Dale Rahn
@@ -58,15 +58,6 @@ _dl_load_list_free(struct load_list *load_list)
 	}
 }
 
-void
-_dl_notify_unload_shlib(elf_object_t *object)
-{
-	struct dep_node *n;
-
-	if (--object->refcount == 0)
-		for (n = object->first_child; n; n = n->next_sibling)
-			_dl_notify_unload_shlib(n->data);
-}
 
 void
 _dl_unload_shlib(elf_object_t *object)
diff --git a/libexec/ld.so/library_subr.c b/libexec/ld.so/library_subr.c
index 07f69f9e24b..c2e7d8f8e81 100644
--- a/libexec/ld.so/library_subr.c
+++ b/libexec/ld.so/library_subr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: library_subr.c,v 1.4 2005/05/10 03:36:07 drahn Exp $ */
+/*	$OpenBSD: library_subr.c,v 1.5 2005/05/23 19:22:11 drahn Exp $ */
 
 /*
  * Copyright (c) 2002 Dale Rahn
@@ -387,6 +387,16 @@ _dl_unlink_dlopen(elf_object_t *dep)
 	}
 }
 
+void
+_dl_notify_unload_shlib(elf_object_t *object)
+{
+	struct dep_node *n;
+
+	if (--object->refcount == 0)
+		for (n = object->first_child; n; n = n->next_sibling)
+			_dl_notify_unload_shlib(n->data);
+}
+
 void
 _dl_unload_dlopen(void)
 {
-- 
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