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| author | Eric Sandeen <sandeen@sandeen.net> | 2014-05-05 11:25:50 +0400 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2014-05-05 11:25:50 +0400 |
| commit | 9da93f9b7cdf8ab28da6b364cdc1fafc8670b4dc (patch) | |
| tree | a0315376046dce4cfcfd498af5617e4088c8e86c /fs/xfs/xfs_quotaops.c | |
| parent | c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff) | |
| download | linux-9da93f9b7cdf8ab28da6b364cdc1fafc8670b4dc.tar.xz | |
xfs: fix Q_XQUOTARM ioctl
The Q_XQUOTARM quotactl was not working properly, because
we weren't passing around proper flags. The xfs_fs_set_xstate()
ioctl handler used the same flags for Q_XQUOTAON/OFF as
well as for Q_XQUOTARM, but Q_XQUOTAON/OFF look for
XFS_UQUOTA_ACCT, XFS_UQUOTA_ENFD, XFS_GQUOTA_ACCT etc,
i.e. quota type + state, while Q_XQUOTARM looks only for
the type of quota, i.e. XFS_DQ_USER, XFS_DQ_GROUP etc.
Unfortunately these flag spaces overlap a bit, so we
got semi-random results for Q_XQUOTARM; i.e. the value
for XFS_DQ_USER == XFS_UQUOTA_ACCT, etc. yeargh.
Add a new quotactl op vector specifically for the QUOTARM
operation, since it operates with a different flag space.
This has been broken more or less forever, AFAICT.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_quotaops.c')
| -rw-r--r-- | fs/xfs/xfs_quotaops.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c index af33cafe69b6..2ad1b9822e92 100644 --- a/fs/xfs/xfs_quotaops.c +++ b/fs/xfs/xfs_quotaops.c @@ -100,16 +100,36 @@ xfs_fs_set_xstate( if (!XFS_IS_QUOTA_ON(mp)) return -EINVAL; return -xfs_qm_scall_quotaoff(mp, flags); - case Q_XQUOTARM: - if (XFS_IS_QUOTA_ON(mp)) - return -EINVAL; - return -xfs_qm_scall_trunc_qfiles(mp, flags); } return -EINVAL; } STATIC int +xfs_fs_rm_xquota( + struct super_block *sb, + unsigned int uflags) +{ + struct xfs_mount *mp = XFS_M(sb); + unsigned int flags = 0; + + if (sb->s_flags & MS_RDONLY) + return -EROFS; + + if (XFS_IS_QUOTA_ON(mp)) + return -EINVAL; + + if (uflags & FS_USER_QUOTA) + flags |= XFS_DQ_USER; + if (uflags & FS_GROUP_QUOTA) + flags |= XFS_DQ_GROUP; + if (uflags & FS_USER_QUOTA) + flags |= XFS_DQ_PROJ; + + return -xfs_qm_scall_trunc_qfiles(mp, flags); +} + +STATIC int xfs_fs_get_dqblk( struct super_block *sb, struct kqid qid, @@ -149,6 +169,7 @@ const struct quotactl_ops xfs_quotactl_operations = { .get_xstatev = xfs_fs_get_xstatev, .get_xstate = xfs_fs_get_xstate, .set_xstate = xfs_fs_set_xstate, + .rm_xquota = xfs_fs_rm_xquota, .get_dqblk = xfs_fs_get_dqblk, .set_dqblk = xfs_fs_set_dqblk, }; |