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btrfs-progs: fix btrfstune silence on failure

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Originally, btrfstune will fail without any options, like this:

	# btrfstune /dev/sdb

An error prompt & usage should show up upon this condition.

Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Gui Hecheng 2013-12-18 11:52:45 +08:00 committed by Chris Mason
parent ec3fbfcb55
commit f1bb766b3b
1 changed files with 9 additions and 0 deletions
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9
btrfstune.c
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@ -115,6 +115,7 @@ int main(int argc, char *argv[])
int skinny_flag = 0;
int ret;
optind = 1;
while(1) {
int c = getopt(argc, argv, "S:rx");
if (c < 0)
@ -143,6 +144,13 @@ int main(int argc, char *argv[])
return 1;
}
if (!(seeding_flag + extrefs_flag + skinny_flag)) {
fprintf(stderr,
"ERROR: At least one option should be assigned.\n");
print_usage();
return 1;
}
if (check_mounted(device)) {
fprintf(stderr, "%s is mounted\n", device);
return 1;
@ -176,6 +184,7 @@ int main(int argc, char *argv[])
} else {
root->fs_info->readonly = 1;
ret = 1;
fprintf(stderr, "btrfstune failed\n");
}
close_ctree(root);