From: Ulrich Drepper <drepper@redhat.com>
Date: Mon, 16 Mar 2009 22:33:01 +0000 (+0000)
Subject: * nscd/connections.c (restart): Try to preserve the process name
X-Git-Tag: cvs/fedora-glibc-20090320T1944~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d9822dbe663a7cefe32979e09a186f739ea8b769;p=platform%2Fupstream%2Fglibc.git

* nscd/connections.c (restart): Try to preserve the process name

	by reading the /proc/self/exe symlink and using the return name.
	Patch by Jeff Bastian <jbastian@redhat.com>.
---

diff --git a/ChangeLog b/ChangeLog
index 8911e97..3bb4ed1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-03-16  Ulrich Drepper  <drepper@redhat.com>
+
+	* nscd/connections.c (restart): Try to preserve the process name
+	by reading the /proc/self/exe symlink and using the return name.
+	Patch by Jeff Bastian <jbastian@redhat.com>.
+
 2009-03-15  Ulrich Drepper  <drepper@redhat.com>
 
 	[BZ #9733]
diff --git a/nscd/connections.c b/nscd/connections.c
index 3d0727f..234e289 100644
--- a/nscd/connections.c
+++ b/nscd/connections.c
@@ -1418,7 +1418,22 @@ cannot change to old working directory: %s; disabling paranoia mode"),
       }
 
   /* The preparations are done.  */
-  execv ("/proc/self/exe", argv);
+#ifdef PATH_MAX
+  char pathbuf[PATH_MAX];
+#else
+  char pathbuf[256];
+#endif
+  /* Try to exec the real nscd program so the process name (as reported
+     in /proc/PID/status) will be 'nscd', but fall back to /proc/self/exe
+     if readlink fails */
+  ssize_t n = readlink ("/proc/self/exe", pathbuf, sizeof (pathbuf) - 1);
+  if (n == -1)
+    execv ("/proc/self/exe", argv);
+  else
+    {
+      pathbuf[n] = '\0';
+      execv (pathbuf, argv);
+    }
 
   /* If we come here, we will never be able to re-exec.  */
   dbg_log (_("re-exec failed: %s; disabling paranoia mode"),