diff options
| author | Eric Sandeen <sandeen@sandeen.net> | 2016-02-08 01:27:38 +0100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-02-08 01:27:38 +0100 |
| commit | 296c24e26ee3af2dbfecb482e6bc9560bd34c455 (patch) | |
| tree | 7bd3e203250eb08a9463def3a49429cd5da12387 /fs/xfs/xfs_qm_syscalls.c | |
| parent | xfs: Factor xfs_seek_hole_data into helper (diff) | |
| download | linux-296c24e26ee3af2dbfecb482e6bc9560bd34c455.tar.xz linux-296c24e26ee3af2dbfecb482e6bc9560bd34c455.zip | |
xfs: wire up Q_XGETNEXTQUOTA / get_nextdqblk
Add code to allow the Q_XGETNEXTQUOTA quotactl to quickly find
all active quotas by examining the quota inode, and skipping
over unallocated or uninitialized regions.
Userspace can then use this interface rather than i.e. a
getpwent() loop when asked to report all active quotas.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_qm_syscalls.c')
| -rw-r--r-- | fs/xfs/xfs_qm_syscalls.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c index 3640c6e896af..0a252863f82b 100644 --- a/fs/xfs/xfs_qm_syscalls.c +++ b/fs/xfs/xfs_qm_syscalls.c @@ -635,9 +635,10 @@ out: int xfs_qm_scall_getquota( struct xfs_mount *mp, - xfs_dqid_t id, + xfs_dqid_t *id, uint type, - struct qc_dqblk *dst) + struct qc_dqblk *dst, + uint dqget_flags) { struct xfs_dquot *dqp; int error; @@ -647,7 +648,7 @@ xfs_qm_scall_getquota( * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't * exist, we'll get ENOENT back. */ - error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp); + error = xfs_qm_dqget(mp, NULL, *id, type, dqget_flags, &dqp); if (error) return error; @@ -660,6 +661,9 @@ xfs_qm_scall_getquota( goto out_put; } + /* Fill in the ID we actually read from disk */ + *id = be32_to_cpu(dqp->q_core.d_id); + memset(dst, 0, sizeof(*dst)); dst->d_spc_hardlimit = XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit)); @@ -701,7 +705,7 @@ xfs_qm_scall_getquota( if (((XFS_IS_UQUOTA_ENFORCED(mp) && type == XFS_DQ_USER) || (XFS_IS_GQUOTA_ENFORCED(mp) && type == XFS_DQ_GROUP) || (XFS_IS_PQUOTA_ENFORCED(mp) && type == XFS_DQ_PROJ)) && - id != 0) { + *id != 0) { if ((dst->d_space > dst->d_spc_softlimit) && (dst->d_spc_softlimit > 0)) { ASSERT(dst->d_spc_timer != 0); |