diff options
Diffstat (limited to 'cmds-replace.c')
| -rw-r--r-- | cmds-replace.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/cmds-replace.c b/cmds-replace.c index 2f123cbe..47a8e1c0 100644 --- a/cmds-replace.c +++ b/cmds-replace.c @@ -142,6 +142,8 @@ static int cmd_replace_start(int argc, char **argv) int do_not_background = 0; int mixed = 0; DIR *dirstream = NULL; + u64 srcdev_size; + u64 dstdev_size; while ((c = getopt(argc, argv, "Brf")) != -1) { switch (c) { @@ -249,16 +251,28 @@ static int cmd_replace_start(int argc, char **argv) srcdev, path); goto leave_with_error; } - } else if (is_block_device(srcdev)) { + srcdev_size = di_args[i].total_bytes; + } else if (is_block_device(srcdev) > 0) { strncpy((char *)start_args.start.srcdev_name, srcdev, BTRFS_DEVICE_PATH_NAME_MAX); start_args.start.srcdevid = 0; + srcdev_size = get_partition_size(srcdev); + } else { + fprintf(stderr, "ERROR: source device must be a block device or a devid\n"); + goto leave_with_error; } ret = test_dev_for_mkfs(dstdev, force_using_targetdev); if (ret) goto leave_with_error; + dstdev_size = get_partition_size(dstdev); + if (srcdev_size > dstdev_size) { + fprintf(stderr, "ERROR: target device smaller than source device (required %llu bytes)\n", + srcdev_size); + goto leave_with_error; + } + fddstdev = open(dstdev, O_RDWR); if (fddstdev < 0) { fprintf(stderr, "Unable to open %s\n", dstdev); |