2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-24 21:24:00 +08:00
linux-next/fs/xfs/xfs_qm_syscalls.c
Dave Chinner 0b61f8a407 xfs: convert to SPDX license tags
Remove the verbose license text from XFS files and replace them
with SPDX tags. This does not change the license of any of the code,
merely refers to the common, up-to-date license files in LICENSES/

This change was mostly scripted. fs/xfs/Makefile and
fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected
and modified by the following command:

for f in `git grep -l "GNU General" fs/xfs/` ; do
	echo $f
	cat $f | awk -f hdr.awk > $f.new
	mv -f $f.new $f
done

And the hdr.awk script that did the modification (including
detecting the difference between GPL-2.0 and GPL-2.0+ licenses)
is as follows:

$ cat hdr.awk
BEGIN {
	hdr = 1.0
	tag = "GPL-2.0"
	str = ""
}

/^ \* This program is free software/ {
	hdr = 2.0;
	next
}

/any later version./ {
	tag = "GPL-2.0+"
	next
}

/^ \*\// {
	if (hdr > 0.0) {
		print "// SPDX-License-Identifier: " tag
		print str
		print $0
		str=""
		hdr = 0.0
		next
	}
	print $0
	next
}

/^ \* / {
	if (hdr > 1.0)
		next
	if (hdr > 0.0) {
		if (str != "")
			str = str "\n"
		str = str $0
		next
	}
	print $0
	next
}

/^ \*/ {
	if (hdr > 0.0)
		next
	print $0
	next
}

// {
	if (hdr > 0.0) {
		if (str != "")
			str = str "\n"
		str = str $0
		next
	}
	print $0
}

END { }
$

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-06-06 14:17:53 -07:00

786 lines
21 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#include <linux/capability.h>
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_bit.h"
#include "xfs_sb.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_trans.h"
#include "xfs_error.h"
#include "xfs_quota.h"
#include "xfs_qm.h"
#include "xfs_trace.h"
#include "xfs_icache.h"
STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
uint);
/*
* Turn off quota accounting and/or enforcement for all udquots and/or
* gdquots. Called only at unmount time.
*
* This assumes that there are no dquots of this file system cached
* incore, and modifies the ondisk dquot directly. Therefore, for example,
* it is an error to call this twice, without purging the cache.
*/
int
xfs_qm_scall_quotaoff(
xfs_mount_t *mp,
uint flags)
{
struct xfs_quotainfo *q = mp->m_quotainfo;
uint dqtype;
int error;
uint inactivate_flags;
xfs_qoff_logitem_t *qoffstart;
/*
* No file system can have quotas enabled on disk but not in core.
* Note that quota utilities (like quotaoff) _expect_
* errno == -EEXIST here.
*/
if ((mp->m_qflags & flags) == 0)
return -EEXIST;
error = 0;
flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
/*
* We don't want to deal with two quotaoffs messing up each other,
* so we're going to serialize it. quotaoff isn't exactly a performance
* critical thing.
* If quotaoff, then we must be dealing with the root filesystem.
*/
ASSERT(q);
mutex_lock(&q->qi_quotaofflock);
/*
* If we're just turning off quota enforcement, change mp and go.
*/
if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
mp->m_qflags &= ~(flags);
spin_lock(&mp->m_sb_lock);
mp->m_sb.sb_qflags = mp->m_qflags;
spin_unlock(&mp->m_sb_lock);
mutex_unlock(&q->qi_quotaofflock);
/* XXX what to do if error ? Revert back to old vals incore ? */
return xfs_sync_sb(mp, false);
}
dqtype = 0;
inactivate_flags = 0;
/*
* If accounting is off, we must turn enforcement off, clear the
* quota 'CHKD' certificate to make it known that we have to
* do a quotacheck the next time this quota is turned on.
*/
if (flags & XFS_UQUOTA_ACCT) {
dqtype |= XFS_QMOPT_UQUOTA;
flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
inactivate_flags |= XFS_UQUOTA_ACTIVE;
}
if (flags & XFS_GQUOTA_ACCT) {
dqtype |= XFS_QMOPT_GQUOTA;
flags |= (XFS_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
inactivate_flags |= XFS_GQUOTA_ACTIVE;
}
if (flags & XFS_PQUOTA_ACCT) {
dqtype |= XFS_QMOPT_PQUOTA;
flags |= (XFS_PQUOTA_CHKD | XFS_PQUOTA_ENFD);
inactivate_flags |= XFS_PQUOTA_ACTIVE;
}
/*
* Nothing to do? Don't complain. This happens when we're just
* turning off quota enforcement.
*/
if ((mp->m_qflags & flags) == 0)
goto out_unlock;
/*
* Write the LI_QUOTAOFF log record, and do SB changes atomically,
* and synchronously. If we fail to write, we should abort the
* operation as it cannot be recovered safely if we crash.
*/
error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
if (error)
goto out_unlock;
/*
* Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
* to take care of the race between dqget and quotaoff. We don't take
* any special locks to reset these bits. All processes need to check
* these bits *after* taking inode lock(s) to see if the particular
* quota type is in the process of being turned off. If *ACTIVE, it is
* guaranteed that all dquot structures and all quotainode ptrs will all
* stay valid as long as that inode is kept locked.
*
* There is no turning back after this.
*/
mp->m_qflags &= ~inactivate_flags;
/*
* Give back all the dquot reference(s) held by inodes.
* Here we go thru every single incore inode in this file system, and
* do a dqrele on the i_udquot/i_gdquot that it may have.
* Essentially, as long as somebody has an inode locked, this guarantees
* that quotas will not be turned off. This is handy because in a
* transaction once we lock the inode(s) and check for quotaon, we can
* depend on the quota inodes (and other things) being valid as long as
* we keep the lock(s).
*/
xfs_qm_dqrele_all_inodes(mp, flags);
/*
* Next we make the changes in the quota flag in the mount struct.
* This isn't protected by a particular lock directly, because we
* don't want to take a mrlock every time we depend on quotas being on.
*/
mp->m_qflags &= ~flags;
/*
* Go through all the dquots of this file system and purge them,
* according to what was turned off.
*/
xfs_qm_dqpurge_all(mp, dqtype);
/*
* Transactions that had started before ACTIVE state bit was cleared
* could have logged many dquots, so they'd have higher LSNs than
* the first QUOTAOFF log record does. If we happen to crash when
* the tail of the log has gone past the QUOTAOFF record, but
* before the last dquot modification, those dquots __will__
* recover, and that's not good.
*
* So, we have QUOTAOFF start and end logitems; the start
* logitem won't get overwritten until the end logitem appears...
*/
error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
if (error) {
/* We're screwed now. Shutdown is the only option. */
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
goto out_unlock;
}
/*
* If all quotas are completely turned off, close shop.
*/
if (mp->m_qflags == 0) {
mutex_unlock(&q->qi_quotaofflock);
xfs_qm_destroy_quotainfo(mp);
return 0;
}
/*
* Release our quotainode references if we don't need them anymore.
*/
if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
IRELE(q->qi_uquotaip);
q->qi_uquotaip = NULL;
}
if ((dqtype & XFS_QMOPT_GQUOTA) && q->qi_gquotaip) {
IRELE(q->qi_gquotaip);
q->qi_gquotaip = NULL;
}
if ((dqtype & XFS_QMOPT_PQUOTA) && q->qi_pquotaip) {
IRELE(q->qi_pquotaip);
q->qi_pquotaip = NULL;
}
out_unlock:
mutex_unlock(&q->qi_quotaofflock);
return error;
}
STATIC int
xfs_qm_scall_trunc_qfile(
struct xfs_mount *mp,
xfs_ino_t ino)
{
struct xfs_inode *ip;
struct xfs_trans *tp;
int error;
if (ino == NULLFSINO)
return 0;
error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
if (error)
return error;
xfs_ilock(ip, XFS_IOLOCK_EXCL);
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp);
if (error) {
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
goto out_put;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, 0);
ip->i_d.di_size = 0;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
if (error) {
xfs_trans_cancel(tp);
goto out_unlock;
}
ASSERT(ip->i_d.di_nextents == 0);
xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
error = xfs_trans_commit(tp);
out_unlock:
xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
out_put:
IRELE(ip);
return error;
}
int
xfs_qm_scall_trunc_qfiles(
xfs_mount_t *mp,
uint flags)
{
int error = -EINVAL;
if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0 ||
(flags & ~XFS_DQ_ALLTYPES)) {
xfs_debug(mp, "%s: flags=%x m_qflags=%x",
__func__, flags, mp->m_qflags);
return -EINVAL;
}
if (flags & XFS_DQ_USER) {
error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
if (error)
return error;
}
if (flags & XFS_DQ_GROUP) {
error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
if (error)
return error;
}
if (flags & XFS_DQ_PROJ)
error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_pquotino);
return error;
}
/*
* Switch on (a given) quota enforcement for a filesystem. This takes
* effect immediately.
* (Switching on quota accounting must be done at mount time.)
*/
int
xfs_qm_scall_quotaon(
xfs_mount_t *mp,
uint flags)
{
int error;
uint qf;
flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
/*
* Switching on quota accounting must be done at mount time.
*/
flags &= ~(XFS_ALL_QUOTA_ACCT);
if (flags == 0) {
xfs_debug(mp, "%s: zero flags, m_qflags=%x",
__func__, mp->m_qflags);
return -EINVAL;
}
/*
* Can't enforce without accounting. We check the superblock
* qflags here instead of m_qflags because rootfs can have
* quota acct on ondisk without m_qflags' knowing.
*/
if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
(flags & XFS_UQUOTA_ENFD)) ||
((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
(flags & XFS_GQUOTA_ENFD)) ||
((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
(flags & XFS_PQUOTA_ENFD))) {
xfs_debug(mp,
"%s: Can't enforce without acct, flags=%x sbflags=%x",
__func__, flags, mp->m_sb.sb_qflags);
return -EINVAL;
}
/*
* If everything's up to-date incore, then don't waste time.
*/
if ((mp->m_qflags & flags) == flags)
return -EEXIST;
/*
* Change sb_qflags on disk but not incore mp->qflags
* if this is the root filesystem.
*/
spin_lock(&mp->m_sb_lock);
qf = mp->m_sb.sb_qflags;
mp->m_sb.sb_qflags = qf | flags;
spin_unlock(&mp->m_sb_lock);
/*
* There's nothing to change if it's the same.
*/
if ((qf & flags) == flags)
return -EEXIST;
error = xfs_sync_sb(mp, false);
if (error)
return error;
/*
* If we aren't trying to switch on quota enforcement, we are done.
*/
if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
(mp->m_qflags & XFS_UQUOTA_ACCT)) ||
((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
(mp->m_qflags & XFS_PQUOTA_ACCT)) ||
((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
(mp->m_qflags & XFS_GQUOTA_ACCT)))
return 0;
if (! XFS_IS_QUOTA_RUNNING(mp))
return -ESRCH;
/*
* Switch on quota enforcement in core.
*/
mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
return 0;
}
#define XFS_QC_MASK \
(QC_LIMIT_MASK | QC_TIMER_MASK | QC_WARNS_MASK)
/*
* Adjust quota limits, and start/stop timers accordingly.
*/
int
xfs_qm_scall_setqlim(
struct xfs_mount *mp,
xfs_dqid_t id,
uint type,
struct qc_dqblk *newlim)
{
struct xfs_quotainfo *q = mp->m_quotainfo;
struct xfs_disk_dquot *ddq;
struct xfs_dquot *dqp;
struct xfs_trans *tp;
struct xfs_def_quota *defq;
int error;
xfs_qcnt_t hard, soft;
if (newlim->d_fieldmask & ~XFS_QC_MASK)
return -EINVAL;
if ((newlim->d_fieldmask & XFS_QC_MASK) == 0)
return 0;
/*
* We don't want to race with a quotaoff so take the quotaoff lock.
* We don't hold an inode lock, so there's nothing else to stop
* a quotaoff from happening.
*/
mutex_lock(&q->qi_quotaofflock);
/*
* Get the dquot (locked) before we start, as we need to do a
* transaction to allocate it if it doesn't exist. Once we have the
* dquot, unlock it so we can start the next transaction safely. We hold
* a reference to the dquot, so it's safe to do this unlock/lock without
* it being reclaimed in the mean time.
*/
error = xfs_qm_dqget(mp, id, type, true, &dqp);
if (error) {
ASSERT(error != -ENOENT);
goto out_unlock;
}
defq = xfs_get_defquota(dqp, q);
xfs_dqunlock(dqp);
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_qm_setqlim, 0, 0, 0, &tp);
if (error)
goto out_rele;
xfs_dqlock(dqp);
xfs_trans_dqjoin(tp, dqp);
ddq = &dqp->q_core;
/*
* Make sure that hardlimits are >= soft limits before changing.
*/
hard = (newlim->d_fieldmask & QC_SPC_HARD) ?
(xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_spc_hardlimit) :
be64_to_cpu(ddq->d_blk_hardlimit);
soft = (newlim->d_fieldmask & QC_SPC_SOFT) ?
(xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_spc_softlimit) :
be64_to_cpu(ddq->d_blk_softlimit);
if (hard == 0 || hard >= soft) {
ddq->d_blk_hardlimit = cpu_to_be64(hard);
ddq->d_blk_softlimit = cpu_to_be64(soft);
xfs_dquot_set_prealloc_limits(dqp);
if (id == 0) {
defq->bhardlimit = hard;
defq->bsoftlimit = soft;
}
} else {
xfs_debug(mp, "blkhard %Ld < blksoft %Ld", hard, soft);
}
hard = (newlim->d_fieldmask & QC_RT_SPC_HARD) ?
(xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_rt_spc_hardlimit) :
be64_to_cpu(ddq->d_rtb_hardlimit);
soft = (newlim->d_fieldmask & QC_RT_SPC_SOFT) ?
(xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_rt_spc_softlimit) :
be64_to_cpu(ddq->d_rtb_softlimit);
if (hard == 0 || hard >= soft) {
ddq->d_rtb_hardlimit = cpu_to_be64(hard);
ddq->d_rtb_softlimit = cpu_to_be64(soft);
if (id == 0) {
defq->rtbhardlimit = hard;
defq->rtbsoftlimit = soft;
}
} else {
xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld", hard, soft);
}
hard = (newlim->d_fieldmask & QC_INO_HARD) ?
(xfs_qcnt_t) newlim->d_ino_hardlimit :
be64_to_cpu(ddq->d_ino_hardlimit);
soft = (newlim->d_fieldmask & QC_INO_SOFT) ?
(xfs_qcnt_t) newlim->d_ino_softlimit :
be64_to_cpu(ddq->d_ino_softlimit);
if (hard == 0 || hard >= soft) {
ddq->d_ino_hardlimit = cpu_to_be64(hard);
ddq->d_ino_softlimit = cpu_to_be64(soft);
if (id == 0) {
defq->ihardlimit = hard;
defq->isoftlimit = soft;
}
} else {
xfs_debug(mp, "ihard %Ld < isoft %Ld", hard, soft);
}
/*
* Update warnings counter(s) if requested
*/
if (newlim->d_fieldmask & QC_SPC_WARNS)
ddq->d_bwarns = cpu_to_be16(newlim->d_spc_warns);
if (newlim->d_fieldmask & QC_INO_WARNS)
ddq->d_iwarns = cpu_to_be16(newlim->d_ino_warns);
if (newlim->d_fieldmask & QC_RT_SPC_WARNS)
ddq->d_rtbwarns = cpu_to_be16(newlim->d_rt_spc_warns);
if (id == 0) {
/*
* Timelimits for the super user set the relative time
* the other users can be over quota for this file system.
* If it is zero a default is used. Ditto for the default
* soft and hard limit values (already done, above), and
* for warnings.
*/
if (newlim->d_fieldmask & QC_SPC_TIMER) {
q->qi_btimelimit = newlim->d_spc_timer;
ddq->d_btimer = cpu_to_be32(newlim->d_spc_timer);
}
if (newlim->d_fieldmask & QC_INO_TIMER) {
q->qi_itimelimit = newlim->d_ino_timer;
ddq->d_itimer = cpu_to_be32(newlim->d_ino_timer);
}
if (newlim->d_fieldmask & QC_RT_SPC_TIMER) {
q->qi_rtbtimelimit = newlim->d_rt_spc_timer;
ddq->d_rtbtimer = cpu_to_be32(newlim->d_rt_spc_timer);
}
if (newlim->d_fieldmask & QC_SPC_WARNS)
q->qi_bwarnlimit = newlim->d_spc_warns;
if (newlim->d_fieldmask & QC_INO_WARNS)
q->qi_iwarnlimit = newlim->d_ino_warns;
if (newlim->d_fieldmask & QC_RT_SPC_WARNS)
q->qi_rtbwarnlimit = newlim->d_rt_spc_warns;
} else {
/*
* If the user is now over quota, start the timelimit.
* The user will not be 'warned'.
* Note that we keep the timers ticking, whether enforcement
* is on or off. We don't really want to bother with iterating
* over all ondisk dquots and turning the timers on/off.
*/
xfs_qm_adjust_dqtimers(mp, ddq);
}
dqp->dq_flags |= XFS_DQ_DIRTY;
xfs_trans_log_dquot(tp, dqp);
error = xfs_trans_commit(tp);
out_rele:
xfs_qm_dqrele(dqp);
out_unlock:
mutex_unlock(&q->qi_quotaofflock);
return error;
}
STATIC int
xfs_qm_log_quotaoff_end(
xfs_mount_t *mp,
xfs_qoff_logitem_t *startqoff,
uint flags)
{
xfs_trans_t *tp;
int error;
xfs_qoff_logitem_t *qoffi;
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_qm_equotaoff, 0, 0, 0, &tp);
if (error)
return error;
qoffi = xfs_trans_get_qoff_item(tp, startqoff,
flags & XFS_ALL_QUOTA_ACCT);
xfs_trans_log_quotaoff_item(tp, qoffi);
/*
* We have to make sure that the transaction is secure on disk before we
* return and actually stop quota accounting. So, make it synchronous.
* We don't care about quotoff's performance.
*/
xfs_trans_set_sync(tp);
return xfs_trans_commit(tp);
}
STATIC int
xfs_qm_log_quotaoff(
xfs_mount_t *mp,
xfs_qoff_logitem_t **qoffstartp,
uint flags)
{
xfs_trans_t *tp;
int error;
xfs_qoff_logitem_t *qoffi;
*qoffstartp = NULL;
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_qm_quotaoff, 0, 0, 0, &tp);
if (error)
goto out;
qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
xfs_trans_log_quotaoff_item(tp, qoffi);
spin_lock(&mp->m_sb_lock);
mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
spin_unlock(&mp->m_sb_lock);
xfs_log_sb(tp);
/*
* We have to make sure that the transaction is secure on disk before we
* return and actually stop quota accounting. So, make it synchronous.
* We don't care about quotoff's performance.
*/
xfs_trans_set_sync(tp);
error = xfs_trans_commit(tp);
if (error)
goto out;
*qoffstartp = qoffi;
out:
return error;
}
/* Fill out the quota context. */
static void
xfs_qm_scall_getquota_fill_qc(
struct xfs_mount *mp,
uint type,
const struct xfs_dquot *dqp,
struct qc_dqblk *dst)
{
memset(dst, 0, sizeof(*dst));
dst->d_spc_hardlimit =
XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit));
dst->d_spc_softlimit =
XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit));
dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
dst->d_space = XFS_FSB_TO_B(mp, dqp->q_res_bcount);
dst->d_ino_count = dqp->q_res_icount;
dst->d_spc_timer = be32_to_cpu(dqp->q_core.d_btimer);
dst->d_ino_timer = be32_to_cpu(dqp->q_core.d_itimer);
dst->d_ino_warns = be16_to_cpu(dqp->q_core.d_iwarns);
dst->d_spc_warns = be16_to_cpu(dqp->q_core.d_bwarns);
dst->d_rt_spc_hardlimit =
XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit));
dst->d_rt_spc_softlimit =
XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit));
dst->d_rt_space = XFS_FSB_TO_B(mp, dqp->q_res_rtbcount);
dst->d_rt_spc_timer = be32_to_cpu(dqp->q_core.d_rtbtimer);
dst->d_rt_spc_warns = be16_to_cpu(dqp->q_core.d_rtbwarns);
/*
* Internally, we don't reset all the timers when quota enforcement
* gets turned off. No need to confuse the user level code,
* so return zeroes in that case.
*/
if ((!XFS_IS_UQUOTA_ENFORCED(mp) &&
dqp->q_core.d_flags == XFS_DQ_USER) ||
(!XFS_IS_GQUOTA_ENFORCED(mp) &&
dqp->q_core.d_flags == XFS_DQ_GROUP) ||
(!XFS_IS_PQUOTA_ENFORCED(mp) &&
dqp->q_core.d_flags == XFS_DQ_PROJ)) {
dst->d_spc_timer = 0;
dst->d_ino_timer = 0;
dst->d_rt_spc_timer = 0;
}
#ifdef DEBUG
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)) &&
dqp->q_core.d_id != 0) {
if ((dst->d_space > dst->d_spc_softlimit) &&
(dst->d_spc_softlimit > 0)) {
ASSERT(dst->d_spc_timer != 0);
}
if ((dst->d_ino_count > dst->d_ino_softlimit) &&
(dst->d_ino_softlimit > 0)) {
ASSERT(dst->d_ino_timer != 0);
}
}
#endif
}
/* Return the quota information for the dquot matching id. */
int
xfs_qm_scall_getquota(
struct xfs_mount *mp,
xfs_dqid_t id,
uint type,
struct qc_dqblk *dst)
{
struct xfs_dquot *dqp;
int error;
/*
* Try to get the dquot. We don't want it allocated on disk, so don't
* set doalloc. If it doesn't exist, we'll get ENOENT back.
*/
error = xfs_qm_dqget(mp, id, type, false, &dqp);
if (error)
return error;
/*
* If everything's NULL, this dquot doesn't quite exist as far as
* our utility programs are concerned.
*/
if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
error = -ENOENT;
goto out_put;
}
xfs_qm_scall_getquota_fill_qc(mp, type, dqp, dst);
out_put:
xfs_qm_dqput(dqp);
return error;
}
/*
* Return the quota information for the first initialized dquot whose id
* is at least as high as id.
*/
int
xfs_qm_scall_getquota_next(
struct xfs_mount *mp,
xfs_dqid_t *id,
uint type,
struct qc_dqblk *dst)
{
struct xfs_dquot *dqp;
int error;
error = xfs_qm_dqget_next(mp, *id, type, &dqp);
if (error)
return error;
/* Fill in the ID we actually read from disk */
*id = be32_to_cpu(dqp->q_core.d_id);
xfs_qm_scall_getquota_fill_qc(mp, type, dqp, dst);
xfs_qm_dqput(dqp);
return error;
}
STATIC int
xfs_dqrele_inode(
struct xfs_inode *ip,
int flags,
void *args)
{
/* skip quota inodes */
if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
ip == ip->i_mount->m_quotainfo->qi_gquotaip ||
ip == ip->i_mount->m_quotainfo->qi_pquotaip) {
ASSERT(ip->i_udquot == NULL);
ASSERT(ip->i_gdquot == NULL);
ASSERT(ip->i_pdquot == NULL);
return 0;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
xfs_qm_dqrele(ip->i_udquot);
ip->i_udquot = NULL;
}
if ((flags & XFS_GQUOTA_ACCT) && ip->i_gdquot) {
xfs_qm_dqrele(ip->i_gdquot);
ip->i_gdquot = NULL;
}
if ((flags & XFS_PQUOTA_ACCT) && ip->i_pdquot) {
xfs_qm_dqrele(ip->i_pdquot);
ip->i_pdquot = NULL;
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
return 0;
}
/*
* Go thru all the inodes in the file system, releasing their dquots.
*
* Note that the mount structure gets modified to indicate that quotas are off
* AFTER this, in the case of quotaoff.
*/
void
xfs_qm_dqrele_all_inodes(
struct xfs_mount *mp,
uint flags)
{
ASSERT(mp->m_quotainfo);
xfs_inode_ag_iterator_flags(mp, xfs_dqrele_inode, flags, NULL,
XFS_AGITER_INEW_WAIT);
}