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authorEric Sandeen <sandeen@sandeen.net>2014-05-05 09:25:50 +0200
committerDave Chinner <david@fromorbit.com>2014-05-05 09:25:50 +0200
commit9da93f9b7cdf8ab28da6b364cdc1fafc8670b4dc (patch)
treea0315376046dce4cfcfd498af5617e4088c8e86c /fs/xfs/xfs_quotaops.c
parentLinux 3.15-rc1 (diff)
downloadlinux-9da93f9b7cdf8ab28da6b364cdc1fafc8670b4dc.tar.xz
linux-9da93f9b7cdf8ab28da6b364cdc1fafc8670b4dc.zip
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.c29
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,
};