We can use open_btrfs_dir() to check whether target dir is
in btrfs's mount point before open, instead of checking it in kernel
space of ioctl, and return fuzzy error message.
Before patch:
# (/mnt/tmp is not btrfs mountpoint)
#
# btrfs device add -f /dev/sda13 /mnt/tmp
ERROR: error adding the device '/dev/sda13' - Inappropriate ioctl for device
#
After patch:
# btrfs device add -f /dev/sda13 /mnt/tmp
ERROR: not btrfs filesystem: /mnt/tmp
#
Similar fix for device remove and device usage.
Signed-off-by: Zhao Lei <zhaolei@xxxxxxxxxxxxxx>
---
cmds-device.c | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)
diff --git a/cmds-device.c b/cmds-device.c
index 00e362a..2dba050 100644
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -84,11 +84,9 @@ static int cmd_device_add(int argc, char **argv)
mntpnt = argv[optind + argc - 1];
- fdmnt = open_file_or_dir(mntpnt, &dirstream);
- if (fdmnt < 0) {
- fprintf(stderr, "ERROR: can't access '%s'\n", mntpnt);
+ fdmnt = open_btrfs_dir(mntpnt, &dirstream, 1);
+ if (fdmnt < 0)
return 1;
- }
for (i = optind; i < optind + argc - 1; i++){
struct btrfs_ioctl_vol_args ioctl_args;
@@ -157,11 +155,9 @@ static int _cmd_device_remove(int argc, char **argv,
mntpnt = argv[argc - 1];
- fdmnt = open_file_or_dir(mntpnt, &dirstream);
- if (fdmnt < 0) {
- fprintf(stderr, "ERROR: can't access '%s'\n", mntpnt);
+ fdmnt = open_btrfs_dir(mntpnt, &dirstream, 1);
+ if (fdmnt < 0)
return 1;
- }
for(i=1 ; i < argc - 1; i++ ){
struct btrfs_ioctl_vol_args arg;
@@ -586,10 +582,8 @@ int cmd_device_usage(int argc, char **argv)
if (more_than_one)
printf("\n");
- fd = open_file_or_dir(argv[i], &dirstream);
+ fd = open_btrfs_dir(argv[i], &dirstream, 1);
if (fd < 0) {
- fprintf(stderr, "ERROR: can't access '%s'\n",
- argv[1]);
ret = 1;
goto out;
}
--
1.8.5.1
--
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