mkfs.lafs should give an error on size-zero devices.

size==0 sometimes means we have already printed a message..

Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/tools/mkfs.lafs.c b/tools/mkfs.lafs.c
index 2d61ca0c448d6af3be62b166426a6cf36c870522..5609321020f506afb7ec323388b245d43ba6a720 100644 (file)
--- a/tools/mkfs.lafs.c
+++ b/tools/mkfs.lafs.c
@@ -195,6 +195,8 @@ int open_device(char *devname, long long *device_bytes, int regular_file)
                else if (ioctl(fd, BLKGETSIZE64, &size) != 0)
                        fprintf(stderr, "mkfs.lafs: Cannot get size of %s\n",
                                devname);
+               else if (size == 0)
+                       size = 1;/*ensure we get an error */
        }
        if (size == 0)
                ;