Hurd: fix symlink/symlinkat error case not to do an extraneous __mach_port_deallocate.

3 files changed, 35 insertions, 23 deletions

diff --git a/ChangeLog b/ChangeLog
index fc74310545..1c13c37d11 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2012-04-24  Roland McGrath  <roland@hack.frob.com>
+
+	* sysdeps/mach/hurd/symlink.c: Don't call __mach_port_deallocate on
+	NODE when __dir_mkfile failed.
+	* sysdeps/mach/hurd/symlinkat.c: Likewise.
+	Reported by Ludovic Courtès <ludo@gnu.org>.
+
 2012-04-24  Andreas Jaeger  <aj@suse.de>
 
 	* Makerules (common-clean): Also remove gen-as-const-headers
diff --git a/sysdeps/mach/hurd/symlink.c b/sysdeps/mach/hurd/symlink.c
index 8bca405139..0754b1893b 100644
--- a/sysdeps/mach/hurd/symlink.c
+++ b/sysdeps/mach/hurd/symlink.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2012 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
@@ -46,19 +46,22 @@ __symlink (from, to)
   err = __dir_mkfile (dir, O_WRITE, 0777 & ~_hurd_umask, &node);
 
   if (! err)
-    /* Set the node's translator to make it a symlink.  */
-    err = __file_set_translator (node,
-				 FS_TRANS_EXCL|FS_TRANS_SET,
-				 FS_TRANS_EXCL|FS_TRANS_SET, 0,
-				 buf, sizeof (_HURD_SYMLINK) + len,
-				 MACH_PORT_NULL, MACH_MSG_TYPE_COPY_SEND);
+    {
+      /* Set the node's translator to make it a symlink.  */
+      err = __file_set_translator (node,
+                                   FS_TRANS_EXCL|FS_TRANS_SET,
+                                   FS_TRANS_EXCL|FS_TRANS_SET, 0,
+                                   buf, sizeof (_HURD_SYMLINK) + len,
+                                   MACH_PORT_NULL, MACH_MSG_TYPE_COPY_SEND);
 
-  if (! err)
-    /* Link the node, now a valid symlink, into the target directory.  */
-    err = __dir_link (dir, node, name, 1);
+      if (! err)
+        /* Link the node, now a valid symlink, into the target directory.  */
+        err = __dir_link (dir, node, name, 1);
+
+      __mach_port_deallocate (__mach_task_self (), node);
+    }
 
   __mach_port_deallocate (__mach_task_self (), dir);
-  __mach_port_deallocate (__mach_task_self (), node);
 
   if (err)
     return __hurd_fail (err);
diff --git a/sysdeps/mach/hurd/symlinkat.c b/sysdeps/mach/hurd/symlinkat.c
index 0fa667d7cd..ff11ecdc16 100644
--- a/sysdeps/mach/hurd/symlinkat.c
+++ b/sysdeps/mach/hurd/symlinkat.c
@@ -1,6 +1,5 @@
 /* Create a symbolic link named relative to an open directory.  Hurd version.
-   Copyright (C) 1991,1992,1993,1994,1995,1996,1997,2006
-	Free Software Foundation, Inc.
+   Copyright (C) 1991-2012 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
@@ -53,19 +52,22 @@ symlinkat (from, fd, to)
   err = __dir_mkfile (dir, O_WRITE, 0777 & ~_hurd_umask, &node);
 
   if (! err)
-    /* Set the node's translator to make it a symlink.  */
-    err = __file_set_translator (node,
-				 FS_TRANS_EXCL|FS_TRANS_SET,
-				 FS_TRANS_EXCL|FS_TRANS_SET, 0,
-				 buf, sizeof (_HURD_SYMLINK) + len,
-				 MACH_PORT_NULL, MACH_MSG_TYPE_COPY_SEND);
+    {
+      /* Set the node's translator to make it a symlink.  */
+      err = __file_set_translator (node,
+                                   FS_TRANS_EXCL|FS_TRANS_SET,
+                                   FS_TRANS_EXCL|FS_TRANS_SET, 0,
+                                   buf, sizeof (_HURD_SYMLINK) + len,
+                                   MACH_PORT_NULL, MACH_MSG_TYPE_COPY_SEND);
 
-  if (! err)
-    /* Link the node, now a valid symlink, into the target directory.  */
-    err = __dir_link (dir, node, name, 1);
+      if (! err)
+        /* Link the node, now a valid symlink, into the target directory.  */
+        err = __dir_link (dir, node, name, 1);
+
+      __mach_port_deallocate (__mach_task_self (), node);
+    }
 
   __mach_port_deallocate (__mach_task_self (), dir);
-  __mach_port_deallocate (__mach_task_self (), node);
 
   if (err)
     return __hurd_fail (err);