I expect btrfs_scan_kernel() would go away in the long run,
however below fix has a problem - when there is no search item
you would return fail (1) always. Since btrfs_scan_kernel() has
limited usage as you mention as well. So I will leave it to David
to decide.
Thanks, Anand
On 08/04/2014 17:16, Qu Wenruo wrote:
btrfs_scan_kernel() is only used in 'btrfs fi show' but returns wrong
return value.
When search parameter is passed, it will never return 0 even the search
can be matched.
This patch will change the whatever strange logic to a more easy to
understand one using 'found' var.
Reported-by: Tsutomu Itoh <t-itoh@xxxxxxxxxxxxxx>
Signed-off-by: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
Cc: Anand Jain <anand.jain@xxxxxxxxxx>
---
cmds-filesystem.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index b81768b..49d3aa7 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -430,6 +430,7 @@ static int btrfs_scan_kernel_v2(void *search)
static int btrfs_scan_kernel(void *search)
{
int ret = 0, fd;
+ int found = 0;
FILE *f;
struct mntent *mnt;
struct btrfs_ioctl_fs_info_args fs_info_arg;
@@ -452,7 +453,6 @@ static int btrfs_scan_kernel(void *search)
if (get_label_mounted(mnt->mnt_dir, label)) {
kfree(dev_info_arg);
- ret = 1;
goto out;
}
if (search && !match_search_item_kernel(fs_info_arg.fsid,
@@ -467,19 +467,16 @@ static int btrfs_scan_kernel(void *search)
space_info_arg, label, mnt->mnt_dir);
kfree(space_info_arg);
memset(label, 0, sizeof(label));
+ found = 1;
}
if (fd != -1)
close(fd);
kfree(dev_info_arg);
- if (search)
- ret = 0;
}
- if (search)
- ret = 1;
out:
endmntent(f);
- return ret;
+ return !found;
}
static int dev_to_fsid(char *dev, __u8 *fsid)
--
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