[Cluster-devel] [PATCH] libgfs2: Make sure secontext gets freed

[Andrew Price <anprice@redhat.com>]

Free sbd.secontext after is_pathname_mounted allocates it. As the RHEL6
metafs code has no construct/destruct model similar to upstream, the
secontext string has to be freed in a few places additional to
cleanup_metafs.

Resolves: #1121693

Signed-off-by: Andrew Price <anprice@redhat.com>
---
 gfs2/fsck/initialize.c | 1 +
 gfs2/libgfs2/misc.c    | 1 +
 gfs2/tool/misc.c       | 2 ++
 gfs2/tool/tune.c       | 4 ++++
 4 files changed, 8 insertions(+)

diff --git a/gfs2/fsck/initialize.c b/gfs2/fsck/initialize.c
index 9abdf0c..0c374eb 100644
--- a/gfs2/fsck/initialize.c
+++ b/gfs2/fsck/initialize.c
@@ -1566,6 +1566,7 @@ int initialize(struct gfs2_sbd *sdp, int force_check, int preen,
 			sizeof(sdp->device_name));
 		sdp->path_name = sdp->device_name; /* This gets overwritten */
 		is_mounted = is_pathname_mounted(sdp, &ro);
+		free(sdp->secontext);
 		/* If the device is busy, but not because it's mounted, fail.
 		   This protects against cases where the file system is LVM
 		   and perhaps mounted on a different node. */
diff --git a/gfs2/libgfs2/misc.c b/gfs2/libgfs2/misc.c
index 5ef4a2a..955e141 100644
--- a/gfs2/libgfs2/misc.c
+++ b/gfs2/libgfs2/misc.c
@@ -301,6 +301,7 @@ void cleanup_metafs(struct gfs2_sbd *sdp)
 	sigaction(SIGUSR2, &sa, NULL);
 	metafs_interrupted = 0;
 	remove_mtab_entry(sdp);
+	free(sdp->secontext);
 }
 
 static void sighandler(int error)
diff --git a/gfs2/tool/misc.c b/gfs2/tool/misc.c
index 37c81cd..506f590 100644
--- a/gfs2/tool/misc.c
+++ b/gfs2/tool/misc.c
@@ -324,6 +324,7 @@ void do_withdraw(int argc, char **argv)
 	if (optind == argc)
 		die("Usage: gfs2_tool withdraw <mountpoint>\n");
 
+	sbd.secontext = NULL;
 	sbd.path_name = argv[optind];
 	if (check_for_gfs2(&sbd)) {
 		if (errno == EINVAL)
@@ -345,5 +346,6 @@ void do_withdraw(int argc, char **argv)
 				strerror(errno));
 		exit(-1);
 	}
+	free(sbd.secontext);
 }
 
diff --git a/gfs2/tool/tune.c b/gfs2/tool/tune.c
index 4666291..92a7b6f 100644
--- a/gfs2/tool/tune.c
+++ b/gfs2/tool/tune.c
@@ -46,6 +46,7 @@ get_tune(int argc, char **argv)
 	if (optind == argc)
 		die( _("Usage: gfs2_tool gettune <mountpoint>\n"));
 
+	sbd.secontext = NULL;
 	sbd.path_name = argv[optind];
 	if (check_for_gfs2(&sbd)) {
 		if (errno == EINVAL)
@@ -87,6 +88,7 @@ get_tune(int argc, char **argv)
 			printf("%s = %s\n", de->d_name, get_sysfs(fs, path));
 	}
 	closedir(d);
+	free(sbd.secontext);
 }
 
 /**
@@ -105,6 +107,7 @@ set_tune(int argc, char **argv)
 	char *fs;
 	struct gfs2_sbd sbd;
 
+	sbd.secontext = NULL;
 	if (optind == argc)
 		die( _("Usage: gfs2_tool settune <mountpoint> <parameter> <value>\n"));
 	sbd.path_name = argv[optind++];
@@ -141,4 +144,5 @@ set_tune(int argc, char **argv)
 				param, strerror(errno));
 		exit(-1);
 	}
+	free(sbd.secontext);
 }
-- 
1.9.3