Originally, btrfstune will fail without any options and just exit
with no failure prompt.
Now, the number of arguments are checked before parse options
and error msg will show up upon failure.
Signed-off-by: Gui Hecheng <guihc.fnst@xxxxxxxxxxxxxx>
---
btrfstune.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/btrfstune.c b/btrfstune.c
index 50724ba..ecaf13d 100644
--- a/btrfstune.c
+++ b/btrfstune.c
@@ -115,6 +115,11 @@ int main(int argc, char *argv[])
int skinny_flag = 0;
int ret;
+ if (argc < 3) {
+ print_usage();
+ return 1;
+ }
+
while(1) {
int c = getopt(argc, argv, "S:rx");
if (c < 0)
@@ -176,6 +181,7 @@ int main(int argc, char *argv[])
} else {
root->fs_info->readonly = 1;
ret = 1;
+ fprintf(stderr, "btrfstune failed\n");
}
close_ctree(root);
--
1.8.0.1
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