Merge from emacs-24; up to 2012-12-22T02:59:08Z!cyd@gnu.org

[gnu-emacs] / src / filelock.c

diff --git a/src/filelock.c b/src/filelock.c
index 17f3f2532491f4f9a8cf0c774eea1dae7d3ce502..228fe98e8c7cd3a74933f7c754a6c8a144cb79d5 100644 (file)
--- a/src/filelock.c
+++ b/src/filelock.c
@@ -1,6 +1,6 @@
 /* Lock files for editing.
-   Copyright (C) 1985-1987, 1993-1994, 1996, 1998-2012
-                 Free Software Foundation, Inc.
+   Copyright (C) 1985-1987, 1993-1994, 1996, 1998-2013 Free Software
+   Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -390,12 +390,14 @@ current_lock_owner (lock_info_type *owner, char *lfname)
   lock_info_type local_owner;
   intmax_t n;
   char *at, *dot, *colon;
-  char readlink_buf[READLINK_BUFSIZE];
-  char *lfinfo = emacs_readlink (lfname, readlink_buf);
+  Lisp_Object lfinfo_object = emacs_readlinkat (AT_FDCWD, lfname);
+  char *lfinfo;
+  struct gcpro gcpro1;
 
   /* If nonexistent lock file, all is well; otherwise, got strange error. */
-  if (!lfinfo)
+  if (NILP (lfinfo_object))
     return errno == ENOENT ? 0 : -1;
+  lfinfo = SSDATA (lfinfo_object);
 
   /* Even if the caller doesn't want the owner info, we still have to
      read it to determine return value.  */
@@ -407,12 +409,9 @@ current_lock_owner (lock_info_type *owner, char *lfname)
   at = strrchr (lfinfo, '@');
   dot = strrchr (lfinfo, '.');
   if (!at || !dot)
-    {
-      if (lfinfo != readlink_buf)
-       xfree (lfinfo);
-      return -1;
-    }
+    return -1;
   len = at - lfinfo;
+  GCPRO1 (lfinfo_object);
   owner->user = xmalloc (len + 1);
   memcpy (owner->user, lfinfo, len);
   owner->user[len] = 0;
@@ -445,8 +444,7 @@ current_lock_owner (lock_info_type *owner, char *lfname)
   owner->host[len] = 0;
 
   /* We're done looking at the link info.  */
-  if (lfinfo != readlink_buf)
-    xfree (lfinfo);
+  UNGCPRO;
 
   /* On current host?  */
   if (STRINGP (Fsystem_name ())