1 files changed, 18 insertions, 2 deletions
diff --git a/ext4_utils/make_ext4fs_main.c b/ext4_utils/make_ext4fs_main.c
index d616c6d4..b83f57ee 100644
--- a/ext4_utils/make_ext4fs_main.c
+++ b/ext4_utils/make_ext4fs_main.c
@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 
-#include <unistd.h>
+#include <fcntl.h>
 #include <libgen.h>
+#include <unistd.h>
 
 #if defined(__linux__)
 #include <linux/fs.h>
@@ -49,6 +50,8 @@ int main(int argc, char **argv)
         int crc = 0;
         int wipe = 0;
         int init_itabs = 0;
+        int fd;
+        int exitcode;
 
         while ((opt = getopt(argc, argv, "l:j:b:g:i:I:L:a:fwzJsct")) != -1) {
                 switch (opt) {
@@ -139,6 +142,19 @@ int main(int argc, char **argv)
                 exit(EXIT_FAILURE);
         }
 
-        return make_ext4fs_internal(filename, directory, mountpoint, android, gzip,
+        if (strcmp(filename, "-")) {
+                fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+                if (fd < 0) {
+                        error_errno("open");
+                        return EXIT_FAILURE;
+                }
+        } else {
+                fd = STDOUT_FILENO;
+        }
+
+        exitcode = make_ext4fs_internal(fd, directory, mountpoint, android, gzip,
                        sparse, crc, wipe, init_itabs);
+        close(fd);
+
+        return exitcode;
 }