btrfs-progs: image: more verbose syntax erors for -t and -c

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 10 insertions, 4 deletions

diff --git a/btrfs-image.c b/btrfs-image.c
index 3039c0c1..953d368d 100644
--- a/btrfs-image.c
+++ b/btrfs-image.c
@@ -2760,13 +2760,19 @@ int main(int argc, char *argv[])
 			break;
 		case 't':
 			num_threads = arg_strtou64(optarg);
-			if (num_threads > 32)
-				print_usage(1);
+			if (num_threads > 32) {
+				error("number of threads out of range: %llu",
+					(unsigned long long)num_threads);
+				return 1;
+			}
 			break;
 		case 'c':
 			compress_level = arg_strtou64(optarg);
-			if (compress_level > 9)
-				print_usage(1);
+			if (compress_level > 9) {
+				error("compression level out of range: %llu",
+					(unsigned long long)compress_level);
+				return 1;
+			}
 			break;
 		case 'o':
 			old_restore = 1;