libglusterfs: Fix memory leaks in fd_lk_insert_and_merge

Change-Id: I666664895fdd7c7199797796819e652557a7ac99
BUG: 834465
Signed-off-by: Vijay Bellur <vbellur@redhat.com>
Reviewed-on: http://review.gluster.org/4529
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/tests/bugs/bug-834465.c b/tests/bugs/bug-834465.c
new file mode 100644
index 000000000..61d3deac0
--- /dev/null
+++ b/tests/bugs/bug-834465.c
@@ -0,0 +1,61 @@
+#include <sys/file.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int
+main (int argc, char *argv[])
+{
+        int          fd       = -1;
+        char        *filename = NULL;
+        struct flock lock     = {0, };
+        int          i        = 0;
+        int          ret      = -1;
+
+        if (argc != 2) {
+                fprintf (stderr, "Usage: %s <filename> ", argv[0]);
+                goto out;
+        }
+
+        filename = argv[1];
+
+        fd = open (filename, O_RDWR | O_CREAT, 0);
+        if (fd < 0) {
+                fprintf (stderr, "open (%s) failed (%s)\n", filename,
+                         strerror (errno));
+                goto out;
+        }
+
+        lock.l_type = F_WRLCK;
+        lock.l_whence = SEEK_SET;
+        lock.l_start = 1;
+        lock.l_len = 1;
+
+        while (i < 100) {
+                lock.l_type = F_WRLCK;
+                ret = fcntl (fd, F_SETLK, &lock);
+                if (ret < 0) {
+                        fprintf (stderr, "fcntl setlk failed (%s)\n",
+                                        strerror (errno));
+                        goto out;
+                }
+
+                lock.l_type = F_UNLCK;
+                ret = fcntl (fd, F_SETLK, &lock);
+                if (ret < 0) {
+                        fprintf (stderr, "fcntl setlk failed (%s)\n",
+                                        strerror (errno));
+                        goto out;
+                }
+
+                i++;
+        }
+
+        ret = 0;
+
+out:
+        return ret;
+}