[gnome-packagekit/gnome-2-28] Use /proc/%i/exe instead of cmdline when getting the exec of a sender

[Richard Hughes <rhughes src gnome org>]

commit 14129c2d1f7fc628d32c2696ab0ed6c6e03ada2c
Author: Richard Hughes <richard hughsie com>
Date:   Tue Apr 6 16:37:54 2010 +0100

    Use /proc/%i/exe instead of cmdline when getting the exec of a sender

 src/gpk-dbus.c |   16 ++++------------
 1 files changed, 4 insertions(+), 12 deletions(-)
---
diff --git a/src/gpk-dbus.c b/src/gpk-dbus.c
index 17747a0..3bff3ce 100644
--- a/src/gpk-dbus.c
+++ b/src/gpk-dbus.c
@@ -188,7 +188,6 @@ out:
 static gchar *
 gpk_dbus_get_exec_for_sender (GpkDbus *dbus, const gchar *sender)
 {
-	gboolean ret;
 	gchar *filename = NULL;
 	gchar *cmdline = NULL;
 	GError *error = NULL;
@@ -205,19 +204,12 @@ gpk_dbus_get_exec_for_sender (GpkDbus *dbus, const gchar *sender)
 	}
 
 	/* get command line from proc */
-	filename = g_strdup_printf ("/proc/%i/cmdline", pid);
-	ret = g_file_get_contents (filename, &cmdline, NULL, &error);
-	if (!ret) {
-		egg_warning ("failed to get cmdline: %s", error->message);
+	filename = g_strdup_printf ("/proc/%i/exe", pid);
+	cmdline = g_file_read_link (filename, &error);
+	if (cmdline == NULL) {
+		egg_warning ("failed to find exec: %s", error->message);
 		g_error_free (error);
 	}
-
-	/* if command line contains (deleted) the original binary is invalid */
-	if (g_strstr_len (cmdline, -1, "(deleted)") != NULL) {
-		g_free (cmdline);
-		cmdline = NULL;
-		goto out;
-	}
 out:
 	g_free (filename);
 	return cmdline;