diff options
Diffstat (limited to 'btrfs-image.c')
| -rw-r--r-- | btrfs-image.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/btrfs-image.c b/btrfs-image.c index c9dd0232..8ad488d5 100644 --- a/btrfs-image.c +++ b/btrfs-image.c @@ -2463,6 +2463,7 @@ int main(int argc, char *argv[]) int ret; int sanitize = 0; int dev_cnt = 0; + int usage_error = 0; FILE *out; while (1) { @@ -2501,15 +2502,30 @@ int main(int argc, char *argv[]) } } - if ((old_restore) && create) - print_usage(); - argc = argc - optind; dev_cnt = argc - 1; - if (multi_devices && dev_cnt < 2) - print_usage(); - if (!multi_devices && dev_cnt != 1) + if (create) { + if (old_restore) { + fprintf(stderr, "Usage error: create and restore cannot be used at the same time\n"); + usage_error++; + } + } else { + if (walk_trees || sanitize || compress_level) { + fprintf(stderr, "Usage error: use -w, -s, -c options for restore makes no sense\n"); + usage_error++; + } + if (multi_devices && dev_cnt < 2) { + fprintf(stderr, "Usage error: not enough devices specified for -m option\n"); + usage_error++; + } + if (!multi_devices && dev_cnt != 1) { + fprintf(stderr, "Usage error: accepts only 1 device without -m option\n"); + usage_error++; + } + } + + if (usage_error) print_usage(); source = argv[optind]; |