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linux-stable/fs/xfs/quota/xfs_qm_syscalls.c
Christoph Hellwig bd186aa901 [XFS] kill the vfs_flags member in struct bhv_vfs 
All flags are added to xfs_mount's m_flag instead. Note that the 32bit
inode flag was duplicated in both of them, but only cleared in the mount
when it was not nessecary due to the filesystem beeing small enough. Two
flags are still required here - one to indicate the mount option setting,
and one to indicate if it applies or not.

SGI-PV: 969608
SGI-Modid: xfs-linux-melb:xfs-kern:29507a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-10-16 11:45:57 +10:00

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/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/capability.h>
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_dir2.h"
#include "xfs_alloc.h"
#include "xfs_dmapi.h"
#include "xfs_quota.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "xfs_dir2_sf.h"
#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_ialloc.h"
#include "xfs_itable.h"
#include "xfs_bmap.h"
#include "xfs_btree.h"
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_rw.h"
#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_utils.h"
#include "xfs_qm.h"
#ifdef DEBUG
# define qdprintk(s, args...) cmn_err(CE_DEBUG, s, ## args)
#else
# define qdprintk(s, args...) do { } while (0)
#endif
STATIC int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint);
STATIC int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint,
fs_disk_quota_t *);
STATIC int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *);
STATIC int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint,
fs_disk_quota_t *);
STATIC int xfs_qm_scall_quotaon(xfs_mount_t *, uint);
STATIC int xfs_qm_scall_quotaoff(xfs_mount_t *, uint, boolean_t);
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);
STATIC uint xfs_qm_import_flags(uint);
STATIC uint xfs_qm_export_flags(uint);
STATIC uint xfs_qm_import_qtype_flags(uint);
STATIC uint xfs_qm_export_qtype_flags(uint);
STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *,
fs_disk_quota_t *);
/*
* The main distribution switch of all XFS quotactl system calls.
*/
int
xfs_qm_quotactl(
xfs_mount_t *mp,
int cmd,
int id,
xfs_caddr_t addr)
{
int error;
ASSERT(addr != NULL || cmd == Q_XQUOTASYNC);
/*
* The following commands are valid even when quotaoff.
*/
switch (cmd) {
case Q_XQUOTARM:
/*
* Truncate quota files. quota must be off.
*/
if (XFS_IS_QUOTA_ON(mp))
return XFS_ERROR(EINVAL);
if (mp->m_flags & XFS_MOUNT_RDONLY)
return XFS_ERROR(EROFS);
return (xfs_qm_scall_trunc_qfiles(mp,
xfs_qm_import_qtype_flags(*(uint *)addr)));
case Q_XGETQSTAT:
/*
* Get quota status information.
*/
return (xfs_qm_scall_getqstat(mp, (fs_quota_stat_t *)addr));
case Q_XQUOTAON:
/*
* QUOTAON - enabling quota enforcement.
* Quota accounting must be turned on at mount time.
*/
if (mp->m_flags & XFS_MOUNT_RDONLY)
return XFS_ERROR(EROFS);
return (xfs_qm_scall_quotaon(mp,
xfs_qm_import_flags(*(uint *)addr)));
case Q_XQUOTAOFF:
if (mp->m_flags & XFS_MOUNT_RDONLY)
return XFS_ERROR(EROFS);
break;
case Q_XQUOTASYNC:
return (xfs_sync_inodes(mp, SYNC_DELWRI, NULL));
default:
break;
}
if (! XFS_IS_QUOTA_ON(mp))
return XFS_ERROR(ESRCH);
switch (cmd) {
case Q_XQUOTAOFF:
if (mp->m_flags & XFS_MOUNT_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_quotaoff(mp,
xfs_qm_import_flags(*(uint *)addr),
B_FALSE);
break;
case Q_XGETQUOTA:
error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_USER,
(fs_disk_quota_t *)addr);
break;
case Q_XGETGQUOTA:
error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
(fs_disk_quota_t *)addr);
break;
case Q_XGETPQUOTA:
error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
(fs_disk_quota_t *)addr);
break;
case Q_XSETQLIM:
if (mp->m_flags & XFS_MOUNT_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_USER,
(fs_disk_quota_t *)addr);
break;
case Q_XSETGQLIM:
if (mp->m_flags & XFS_MOUNT_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
(fs_disk_quota_t *)addr);
break;
case Q_XSETPQLIM:
if (mp->m_flags & XFS_MOUNT_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
(fs_disk_quota_t *)addr);
break;
default:
error = XFS_ERROR(EINVAL);
break;
}
return (error);
}
/*
* 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.
*/
STATIC int
xfs_qm_scall_quotaoff(
xfs_mount_t *mp,
uint flags,
boolean_t force)
{
uint dqtype;
unsigned long s;
int error;
uint inactivate_flags;
xfs_qoff_logitem_t *qoffstart;
int nculprits;
if (!force && !capable(CAP_SYS_ADMIN))
return XFS_ERROR(EPERM);
/*
* 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 XFS_ERROR(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(mp->m_quotainfo);
if (mp->m_quotainfo)
mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
ASSERT(mp->m_quotainfo);
/*
* If we're just turning off quota enforcement, change mp and go.
*/
if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
mp->m_qflags &= ~(flags);
s = XFS_SB_LOCK(mp);
mp->m_sb.sb_qflags = mp->m_qflags;
XFS_SB_UNLOCK(mp, s);
mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
/* XXX what to do if error ? Revert back to old vals incore ? */
error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
return (error);
}
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_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
inactivate_flags |= XFS_GQUOTA_ACTIVE;
} else if (flags & XFS_PQUOTA_ACCT) {
dqtype |= XFS_QMOPT_PQUOTA;
flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_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) {
mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
return (0);
}
/*
* Write the LI_QUOTAOFF log record, and do SB changes atomically,
* and synchronously.
*/
xfs_qm_log_quotaoff(mp, &qoffstart, flags);
/*
* 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 everytime 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. We may not be able to get rid
* of all dquots, because dquots can have temporary references that
* are not attached to inodes. eg. xfs_setattr, xfs_create.
* So, if we couldn't purge all the dquots from the filesystem,
* we can't get rid of the incore data structures.
*/
while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype|XFS_QMOPT_QUOTAOFF)))
delay(10 * nculprits);
/*
* 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...
*/
xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
/*
* If quotas is completely disabled, close shop.
*/
if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
xfs_qm_destroy_quotainfo(mp);
return (0);
}
/*
* Release our quotainode references, and vn_purge them,
* if we don't need them anymore.
*/
if ((dqtype & XFS_QMOPT_UQUOTA) && XFS_QI_UQIP(mp)) {
XFS_PURGE_INODE(XFS_QI_UQIP(mp));
XFS_QI_UQIP(mp) = NULL;
}
if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && XFS_QI_GQIP(mp)) {
XFS_PURGE_INODE(XFS_QI_GQIP(mp));
XFS_QI_GQIP(mp) = NULL;
}
mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
return (error);
}
STATIC int
xfs_qm_scall_trunc_qfiles(
xfs_mount_t *mp,
uint flags)
{
int error;
xfs_inode_t *qip;
if (!capable(CAP_SYS_ADMIN))
return XFS_ERROR(EPERM);
error = 0;
if (!XFS_SB_VERSION_HASQUOTA(&mp->m_sb) || flags == 0) {
qdprintk("qtrunc flags=%x m_qflags=%x\n", flags, mp->m_qflags);
return XFS_ERROR(EINVAL);
}
if ((flags & XFS_DQ_USER) && mp->m_sb.sb_uquotino != NULLFSINO) {
error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &qip, 0);
if (! error) {
(void) xfs_truncate_file(mp, qip);
VN_RELE(XFS_ITOV(qip));
}
}
if ((flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) &&
mp->m_sb.sb_gquotino != NULLFSINO) {
error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &qip, 0);
if (! error) {
(void) xfs_truncate_file(mp, qip);
VN_RELE(XFS_ITOV(qip));
}
}
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.)
*/
STATIC int
xfs_qm_scall_quotaon(
xfs_mount_t *mp,
uint flags)
{
int error;
unsigned long s;
uint qf;
uint accflags;
__int64_t sbflags;
if (!capable(CAP_SYS_ADMIN))
return XFS_ERROR(EPERM);
flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
/*
* Switching on quota accounting must be done at mount time.
*/
accflags = flags & XFS_ALL_QUOTA_ACCT;
flags &= ~(XFS_ALL_QUOTA_ACCT);
sbflags = 0;
if (flags == 0) {
qdprintk("quotaon: zero flags, m_qflags=%x\n", mp->m_qflags);
return XFS_ERROR(EINVAL);
}
/* No fs can turn on quotas with a delayed effect */
ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
/*
* 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 (((flags & XFS_UQUOTA_ACCT) == 0 &&
(mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
(flags & XFS_UQUOTA_ENFD))
||
((flags & XFS_PQUOTA_ACCT) == 0 &&
(mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
(flags & XFS_GQUOTA_ACCT) == 0 &&
(mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
(flags & XFS_OQUOTA_ENFD))) {
qdprintk("Can't enforce without acct, flags=%x sbflags=%x\n",
flags, mp->m_sb.sb_qflags);
return XFS_ERROR(EINVAL);
}
/*
* If everything's upto-date incore, then don't waste time.
*/
if ((mp->m_qflags & flags) == flags)
return XFS_ERROR(EEXIST);
/*
* Change sb_qflags on disk but not incore mp->qflags
* if this is the root filesystem.
*/
s = XFS_SB_LOCK(mp);
qf = mp->m_sb.sb_qflags;
mp->m_sb.sb_qflags = qf | flags;
XFS_SB_UNLOCK(mp, s);
/*
* There's nothing to change if it's the same.
*/
if ((qf & flags) == flags && sbflags == 0)
return XFS_ERROR(EEXIST);
sbflags |= XFS_SB_QFLAGS;
if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
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)) ||
(flags & XFS_ALL_QUOTA_ENFD) == 0)
return (0);
if (! XFS_IS_QUOTA_RUNNING(mp))
return XFS_ERROR(ESRCH);
/*
* Switch on quota enforcement in core.
*/
mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
return (0);
}
/*
* Return quota status information, such as uquota-off, enforcements, etc.
*/
STATIC int
xfs_qm_scall_getqstat(
xfs_mount_t *mp,
fs_quota_stat_t *out)
{
xfs_inode_t *uip, *gip;
boolean_t tempuqip, tempgqip;
uip = gip = NULL;
tempuqip = tempgqip = B_FALSE;
memset(out, 0, sizeof(fs_quota_stat_t));
out->qs_version = FS_QSTAT_VERSION;
if (! XFS_SB_VERSION_HASQUOTA(&mp->m_sb)) {
out->qs_uquota.qfs_ino = NULLFSINO;
out->qs_gquota.qfs_ino = NULLFSINO;
return (0);
}
out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
(XFS_ALL_QUOTA_ACCT|
XFS_ALL_QUOTA_ENFD));
out->qs_pad = 0;
out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
if (mp->m_quotainfo) {
uip = mp->m_quotainfo->qi_uquotaip;
gip = mp->m_quotainfo->qi_gquotaip;
}
if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
0, 0, &uip, 0) == 0)
tempuqip = B_TRUE;
}
if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
0, 0, &gip, 0) == 0)
tempgqip = B_TRUE;
}
if (uip) {
out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
if (tempuqip)
VN_RELE(XFS_ITOV(uip));
}
if (gip) {
out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
if (tempgqip)
VN_RELE(XFS_ITOV(gip));
}
if (mp->m_quotainfo) {
out->qs_incoredqs = XFS_QI_MPLNDQUOTS(mp);
out->qs_btimelimit = XFS_QI_BTIMELIMIT(mp);
out->qs_itimelimit = XFS_QI_ITIMELIMIT(mp);
out->qs_rtbtimelimit = XFS_QI_RTBTIMELIMIT(mp);
out->qs_bwarnlimit = XFS_QI_BWARNLIMIT(mp);
out->qs_iwarnlimit = XFS_QI_IWARNLIMIT(mp);
}
return (0);
}
/*
* Adjust quota limits, and start/stop timers accordingly.
*/
STATIC int
xfs_qm_scall_setqlim(
xfs_mount_t *mp,
xfs_dqid_t id,
uint type,
fs_disk_quota_t *newlim)
{
xfs_disk_dquot_t *ddq;
xfs_dquot_t *dqp;
xfs_trans_t *tp;
int error;
xfs_qcnt_t hard, soft;
if (!capable(CAP_SYS_ADMIN))
return XFS_ERROR(EPERM);
if ((newlim->d_fieldmask &
(FS_DQ_LIMIT_MASK|FS_DQ_TIMER_MASK|FS_DQ_WARNS_MASK)) == 0)
return (0);
tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128,
0, 0, XFS_DEFAULT_LOG_COUNT))) {
xfs_trans_cancel(tp, 0);
return (error);
}
/*
* 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). (XXXThis doesn't currently happen
* because we take the vfslock before calling xfs_qm_sysent).
*/
mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
/*
* Get the dquot (locked), and join it to the transaction.
* Allocate the dquot if this doesn't exist.
*/
if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) {
xfs_trans_cancel(tp, XFS_TRANS_ABORT);
mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
ASSERT(error != ENOENT);
return (error);
}
xfs_dqtrace_entry(dqp, "Q_SETQLIM: AFT DQGET");
xfs_trans_dqjoin(tp, dqp);
ddq = &dqp->q_core;
/*
* Make sure that hardlimits are >= soft limits before changing.
*/
hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
(xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
be64_to_cpu(ddq->d_blk_hardlimit);
soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
(xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_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);
if (id == 0) {
mp->m_quotainfo->qi_bhardlimit = hard;
mp->m_quotainfo->qi_bsoftlimit = soft;
}
} else {
qdprintk("blkhard %Ld < blksoft %Ld\n", hard, soft);
}
hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
(xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
be64_to_cpu(ddq->d_rtb_hardlimit);
soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
(xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_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) {
mp->m_quotainfo->qi_rtbhardlimit = hard;
mp->m_quotainfo->qi_rtbsoftlimit = soft;
}
} else {
qdprintk("rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
}
hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
(xfs_qcnt_t) newlim->d_ino_hardlimit :
be64_to_cpu(ddq->d_ino_hardlimit);
soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
(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) {
mp->m_quotainfo->qi_ihardlimit = hard;
mp->m_quotainfo->qi_isoftlimit = soft;
}
} else {
qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
}
/*
* Update warnings counter(s) if requested
*/
if (newlim->d_fieldmask & FS_DQ_BWARNS)
ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
if (newlim->d_fieldmask & FS_DQ_IWARNS)
ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
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 & FS_DQ_BTIMER) {
mp->m_quotainfo->qi_btimelimit = newlim->d_btimer;
ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
}
if (newlim->d_fieldmask & FS_DQ_ITIMER) {
mp->m_quotainfo->qi_itimelimit = newlim->d_itimer;
ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
}
if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
mp->m_quotainfo->qi_rtbtimelimit = newlim->d_rtbtimer;
ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
}
if (newlim->d_fieldmask & FS_DQ_BWARNS)
mp->m_quotainfo->qi_bwarnlimit = newlim->d_bwarns;
if (newlim->d_fieldmask & FS_DQ_IWARNS)
mp->m_quotainfo->qi_iwarnlimit = newlim->d_iwarns;
if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
mp->m_quotainfo->qi_rtbwarnlimit = newlim->d_rtbwarns;
} 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);
xfs_dqtrace_entry(dqp, "Q_SETQLIM: COMMIT");
xfs_trans_commit(tp, 0);
xfs_qm_dqprint(dqp);
xfs_qm_dqrele(dqp);
mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
return (0);
}
STATIC int
xfs_qm_scall_getquota(
xfs_mount_t *mp,
xfs_dqid_t id,
uint type,
fs_disk_quota_t *out)
{
xfs_dquot_t *dqp;
int error;
/*
* Try to get the dquot. We don't want it allocated on disk, so
* we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
* exist, we'll get ENOENT back.
*/
if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) {
return (error);
}
xfs_dqtrace_entry(dqp, "Q_GETQUOTA SUCCESS");
/*
* If everything's NULL, this dquot doesn't quite exist as far as
* our utility programs are concerned.
*/
if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
xfs_qm_dqput(dqp);
return XFS_ERROR(ENOENT);
}
/* xfs_qm_dqprint(dqp); */
/*
* Convert the disk dquot to the exportable format
*/
xfs_qm_export_dquot(mp, &dqp->q_core, out);
xfs_qm_dqput(dqp);
return (error ? XFS_ERROR(EFAULT) : 0);
}
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;
tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2,
0, 0, XFS_DEFAULT_LOG_COUNT))) {
xfs_trans_cancel(tp, 0);
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);
error = xfs_trans_commit(tp, 0);
return (error);
}
STATIC int
xfs_qm_log_quotaoff(
xfs_mount_t *mp,
xfs_qoff_logitem_t **qoffstartp,
uint flags)
{
xfs_trans_t *tp;
int error;
unsigned long s;
xfs_qoff_logitem_t *qoffi=NULL;
uint oldsbqflag=0;
tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
if ((error = xfs_trans_reserve(tp, 0,
sizeof(xfs_qoff_logitem_t) * 2 +
mp->m_sb.sb_sectsize + 128,
0,
0,
XFS_DEFAULT_LOG_COUNT))) {
goto error0;
}
qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
xfs_trans_log_quotaoff_item(tp, qoffi);
s = XFS_SB_LOCK(mp);
oldsbqflag = mp->m_sb.sb_qflags;
mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
XFS_SB_UNLOCK(mp, s);
xfs_mod_sb(tp, XFS_SB_QFLAGS);
/*
* 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, 0);
error0:
if (error) {
xfs_trans_cancel(tp, 0);
/*
* No one else is modifying sb_qflags, so this is OK.
* We still hold the quotaofflock.
*/
s = XFS_SB_LOCK(mp);
mp->m_sb.sb_qflags = oldsbqflag;
XFS_SB_UNLOCK(mp, s);
}
*qoffstartp = qoffi;
return (error);
}
/*
* Translate an internal style on-disk-dquot to the exportable format.
* The main differences are that the counters/limits are all in Basic
* Blocks (BBs) instead of the internal FSBs, and all on-disk data has
* to be converted to the native endianness.
*/
STATIC void
xfs_qm_export_dquot(
xfs_mount_t *mp,
xfs_disk_dquot_t *src,
struct fs_disk_quota *dst)
{
memset(dst, 0, sizeof(*dst));
dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */
dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags);
dst->d_id = be32_to_cpu(src->d_id);
dst->d_blk_hardlimit =
XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit));
dst->d_blk_softlimit =
XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit));
dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit);
dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit);
dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount));
dst->d_icount = be64_to_cpu(src->d_icount);
dst->d_btimer = be32_to_cpu(src->d_btimer);
dst->d_itimer = be32_to_cpu(src->d_itimer);
dst->d_iwarns = be16_to_cpu(src->d_iwarns);
dst->d_bwarns = be16_to_cpu(src->d_bwarns);
dst->d_rtb_hardlimit =
XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit));
dst->d_rtb_softlimit =
XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit));
dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount));
dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer);
dst->d_rtbwarns = be16_to_cpu(src->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) && src->d_flags == XFS_DQ_USER) ||
(!XFS_IS_OQUOTA_ENFORCED(mp) &&
(src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) {
dst->d_btimer = 0;
dst->d_itimer = 0;
dst->d_rtbtimer = 0;
}
#ifdef DEBUG
if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == XFS_USER_QUOTA) ||
(XFS_IS_OQUOTA_ENFORCED(mp) &&
(dst->d_flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)))) &&
dst->d_id != 0) {
if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) &&
(dst->d_blk_softlimit > 0)) {
ASSERT(dst->d_btimer != 0);
}
if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) &&
(dst->d_ino_softlimit > 0)) {
ASSERT(dst->d_itimer != 0);
}
}
#endif
}
STATIC uint
xfs_qm_import_qtype_flags(
uint uflags)
{
uint oflags = 0;
/*
* Can't be more than one, or none.
*/
if (((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ==
(XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ||
((uflags & (XFS_GROUP_QUOTA | XFS_PROJ_QUOTA)) ==
(XFS_GROUP_QUOTA | XFS_PROJ_QUOTA)) ||
((uflags & (XFS_USER_QUOTA | XFS_PROJ_QUOTA)) ==
(XFS_USER_QUOTA | XFS_PROJ_QUOTA)) ||
((uflags & (XFS_GROUP_QUOTA|XFS_USER_QUOTA|XFS_PROJ_QUOTA)) == 0))
return (0);
oflags |= (uflags & XFS_USER_QUOTA) ? XFS_DQ_USER : 0;
oflags |= (uflags & XFS_PROJ_QUOTA) ? XFS_DQ_PROJ : 0;
oflags |= (uflags & XFS_GROUP_QUOTA) ? XFS_DQ_GROUP: 0;
return oflags;
}
STATIC uint
xfs_qm_export_qtype_flags(
uint flags)
{
/*
* Can't be more than one, or none.
*/
ASSERT((flags & (XFS_PROJ_QUOTA | XFS_USER_QUOTA)) !=
(XFS_PROJ_QUOTA | XFS_USER_QUOTA));
ASSERT((flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)) !=
(XFS_PROJ_QUOTA | XFS_GROUP_QUOTA));
ASSERT((flags & (XFS_USER_QUOTA | XFS_GROUP_QUOTA)) !=
(XFS_USER_QUOTA | XFS_GROUP_QUOTA));
ASSERT((flags & (XFS_PROJ_QUOTA|XFS_USER_QUOTA|XFS_GROUP_QUOTA)) != 0);
return (flags & XFS_DQ_USER) ?
XFS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
XFS_PROJ_QUOTA : XFS_GROUP_QUOTA;
}
STATIC uint
xfs_qm_import_flags(
uint uflags)
{
uint flags = 0;
if (uflags & XFS_QUOTA_UDQ_ACCT)
flags |= XFS_UQUOTA_ACCT;
if (uflags & XFS_QUOTA_PDQ_ACCT)
flags |= XFS_PQUOTA_ACCT;
if (uflags & XFS_QUOTA_GDQ_ACCT)
flags |= XFS_GQUOTA_ACCT;
if (uflags & XFS_QUOTA_UDQ_ENFD)
flags |= XFS_UQUOTA_ENFD;
if (uflags & (XFS_QUOTA_PDQ_ENFD|XFS_QUOTA_GDQ_ENFD))
flags |= XFS_OQUOTA_ENFD;
return (flags);
}
STATIC uint
xfs_qm_export_flags(
uint flags)
{
uint uflags;
uflags = 0;
if (flags & XFS_UQUOTA_ACCT)
uflags |= XFS_QUOTA_UDQ_ACCT;
if (flags & XFS_PQUOTA_ACCT)
uflags |= XFS_QUOTA_PDQ_ACCT;
if (flags & XFS_GQUOTA_ACCT)
uflags |= XFS_QUOTA_GDQ_ACCT;
if (flags & XFS_UQUOTA_ENFD)
uflags |= XFS_QUOTA_UDQ_ENFD;
if (flags & (XFS_OQUOTA_ENFD)) {
uflags |= (flags & XFS_GQUOTA_ACCT) ?
XFS_QUOTA_GDQ_ENFD : XFS_QUOTA_PDQ_ENFD;
}
return (uflags);
}
/*
* 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. This also gets called from
* xfs_rootumount.
*/
void
xfs_qm_dqrele_all_inodes(
struct xfs_mount *mp,
uint flags)
{
xfs_inode_t *ip, *topino;
uint ireclaims;
bhv_vnode_t *vp;
boolean_t vnode_refd;
ASSERT(mp->m_quotainfo);
XFS_MOUNT_ILOCK(mp);
again:
ip = mp->m_inodes;
if (ip == NULL) {
XFS_MOUNT_IUNLOCK(mp);
return;
}
do {
/* Skip markers inserted by xfs_sync */
if (ip->i_mount == NULL) {
ip = ip->i_mnext;
continue;
}
/* Root inode, rbmip and rsumip have associated blocks */
if (ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) {
ASSERT(ip->i_udquot == NULL);
ASSERT(ip->i_gdquot == NULL);
ip = ip->i_mnext;
continue;
}
vp = XFS_ITOV_NULL(ip);
if (!vp) {
ASSERT(ip->i_udquot == NULL);
ASSERT(ip->i_gdquot == NULL);
ip = ip->i_mnext;
continue;
}
vnode_refd = B_FALSE;
if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
ireclaims = mp->m_ireclaims;
topino = mp->m_inodes;
vp = vn_grab(vp);
if (!vp)
goto again;
XFS_MOUNT_IUNLOCK(mp);
/* XXX restart limit ? */
xfs_ilock(ip, XFS_ILOCK_EXCL);
vnode_refd = B_TRUE;
} else {
ireclaims = mp->m_ireclaims;
topino = mp->m_inodes;
XFS_MOUNT_IUNLOCK(mp);
}
/*
* We don't keep the mountlock across the dqrele() call,
* since it can take a while..
*/
if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
xfs_qm_dqrele(ip->i_udquot);
ip->i_udquot = NULL;
}
if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) {
xfs_qm_dqrele(ip->i_gdquot);
ip->i_gdquot = NULL;
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
/*
* Wait until we've dropped the ilock and mountlock to
* do the vn_rele. Or be condemned to an eternity in the
* inactive code in hell.
*/
if (vnode_refd)
VN_RELE(vp);
XFS_MOUNT_ILOCK(mp);
/*
* If an inode was inserted or removed, we gotta
* start over again.
*/
if (topino != mp->m_inodes || mp->m_ireclaims != ireclaims) {
/* XXX use a sentinel */
goto again;
}
ip = ip->i_mnext;
} while (ip != mp->m_inodes);
XFS_MOUNT_IUNLOCK(mp);
}
/*------------------------------------------------------------------------*/
#ifdef DEBUG
/*
* This contains all the test functions for XFS disk quotas.
* Currently it does a quota accounting check. ie. it walks through
* all inodes in the file system, calculating the dquot accounting fields,
* and prints out any inconsistencies.
*/
xfs_dqhash_t *qmtest_udqtab;
xfs_dqhash_t *qmtest_gdqtab;
int qmtest_hashmask;
int qmtest_nfails;
mutex_t qcheck_lock;
#define DQTEST_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
(__psunsigned_t)(id)) & \
(qmtest_hashmask - 1))
#define DQTEST_HASH(mp, id, type) ((type & XFS_DQ_USER) ? \
(qmtest_udqtab + \
DQTEST_HASHVAL(mp, id)) : \
(qmtest_gdqtab + \
DQTEST_HASHVAL(mp, id)))
#define DQTEST_LIST_PRINT(l, NXT, title) \
{ \
xfs_dqtest_t *dqp; int i = 0;\
cmn_err(CE_DEBUG, "%s (#%d)", title, (int) (l)->qh_nelems); \
for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
dqp = (xfs_dqtest_t *)dqp->NXT) { \
cmn_err(CE_DEBUG, " %d. \"%d (%s)\" bcnt = %d, icnt = %d", \
++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp), \
dqp->d_bcount, dqp->d_icount); } \
}
typedef struct dqtest {
xfs_dqmarker_t q_lists;
xfs_dqhash_t *q_hash; /* the hashchain header */
xfs_mount_t *q_mount; /* filesystem this relates to */
xfs_dqid_t d_id; /* user id or group id */
xfs_qcnt_t d_bcount; /* # disk blocks owned by the user */
xfs_qcnt_t d_icount; /* # inodes owned by the user */
} xfs_dqtest_t;
STATIC void
xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp)
{
xfs_dquot_t *d;
if (((d) = (h)->qh_next))
(d)->HL_PREVP = &((dqp)->HL_NEXT);
(dqp)->HL_NEXT = d;
(dqp)->HL_PREVP = &((h)->qh_next);
(h)->qh_next = (xfs_dquot_t *)dqp;
(h)->qh_version++;
(h)->qh_nelems++;
}
STATIC void
xfs_qm_dqtest_print(
xfs_dqtest_t *d)
{
cmn_err(CE_DEBUG, "-----------DQTEST DQUOT----------------");
cmn_err(CE_DEBUG, "---- dquot ID = %d", d->d_id);
cmn_err(CE_DEBUG, "---- fs = 0x%p", d->q_mount);
cmn_err(CE_DEBUG, "---- bcount = %Lu (0x%x)",
d->d_bcount, (int)d->d_bcount);
cmn_err(CE_DEBUG, "---- icount = %Lu (0x%x)",
d->d_icount, (int)d->d_icount);
cmn_err(CE_DEBUG, "---------------------------");
}
STATIC void
xfs_qm_dqtest_failed(
xfs_dqtest_t *d,
xfs_dquot_t *dqp,
char *reason,
xfs_qcnt_t a,
xfs_qcnt_t b,
int error)
{
qmtest_nfails++;
if (error)
cmn_err(CE_DEBUG, "quotacheck failed id=%d, err=%d\nreason: %s",
d->d_id, error, reason);
else
cmn_err(CE_DEBUG, "quotacheck failed id=%d (%s) [%d != %d]",
d->d_id, reason, (int)a, (int)b);
xfs_qm_dqtest_print(d);
if (dqp)
xfs_qm_dqprint(dqp);
}
STATIC int
xfs_dqtest_cmp2(
xfs_dqtest_t *d,
xfs_dquot_t *dqp)
{
int err = 0;
if (be64_to_cpu(dqp->q_core.d_icount) != d->d_icount) {
xfs_qm_dqtest_failed(d, dqp, "icount mismatch",
be64_to_cpu(dqp->q_core.d_icount),
d->d_icount, 0);
err++;
}
if (be64_to_cpu(dqp->q_core.d_bcount) != d->d_bcount) {
xfs_qm_dqtest_failed(d, dqp, "bcount mismatch",
be64_to_cpu(dqp->q_core.d_bcount),
d->d_bcount, 0);
err++;
}
if (dqp->q_core.d_blk_softlimit &&
be64_to_cpu(dqp->q_core.d_bcount) >=
be64_to_cpu(dqp->q_core.d_blk_softlimit)) {
if (!dqp->q_core.d_btimer && dqp->q_core.d_id) {
cmn_err(CE_DEBUG,
"%d [%s] [0x%p] BLK TIMER NOT STARTED",
d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
err++;
}
}
if (dqp->q_core.d_ino_softlimit &&
be64_to_cpu(dqp->q_core.d_icount) >=
be64_to_cpu(dqp->q_core.d_ino_softlimit)) {
if (!dqp->q_core.d_itimer && dqp->q_core.d_id) {
cmn_err(CE_DEBUG,
"%d [%s] [0x%p] INO TIMER NOT STARTED",
d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
err++;
}
}
#ifdef QUOTADEBUG
if (!err) {
cmn_err(CE_DEBUG, "%d [%s] [0x%p] qchecked",
d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
}
#endif
return (err);
}
STATIC void
xfs_dqtest_cmp(
xfs_dqtest_t *d)
{
xfs_dquot_t *dqp;
int error;
/* xfs_qm_dqtest_print(d); */
if ((error = xfs_qm_dqget(d->q_mount, NULL, d->d_id, d->dq_flags, 0,
&dqp))) {
xfs_qm_dqtest_failed(d, NULL, "dqget failed", 0, 0, error);
return;
}
xfs_dqtest_cmp2(d, dqp);
xfs_qm_dqput(dqp);
}
STATIC int
xfs_qm_internalqcheck_dqget(
xfs_mount_t *mp,
xfs_dqid_t id,
uint type,
xfs_dqtest_t **O_dq)
{
xfs_dqtest_t *d;
xfs_dqhash_t *h;
h = DQTEST_HASH(mp, id, type);
for (d = (xfs_dqtest_t *) h->qh_next; d != NULL;
d = (xfs_dqtest_t *) d->HL_NEXT) {
/* DQTEST_LIST_PRINT(h, HL_NEXT, "@@@@@ dqtestlist @@@@@"); */
if (d->d_id == id && mp == d->q_mount) {
*O_dq = d;
return (0);
}
}
d = kmem_zalloc(sizeof(xfs_dqtest_t), KM_SLEEP);
d->dq_flags = type;
d->d_id = id;
d->q_mount = mp;
d->q_hash = h;
xfs_qm_hashinsert(h, d);
*O_dq = d;
return (0);
}
STATIC void
xfs_qm_internalqcheck_get_dquots(
xfs_mount_t *mp,
xfs_dqid_t uid,
xfs_dqid_t projid,
xfs_dqid_t gid,
xfs_dqtest_t **ud,
xfs_dqtest_t **gd)
{
if (XFS_IS_UQUOTA_ON(mp))
xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud);
if (XFS_IS_GQUOTA_ON(mp))
xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd);
else if (XFS_IS_PQUOTA_ON(mp))
xfs_qm_internalqcheck_dqget(mp, projid, XFS_DQ_PROJ, gd);
}
STATIC void
xfs_qm_internalqcheck_dqadjust(
xfs_inode_t *ip,
xfs_dqtest_t *d)
{
d->d_icount++;
d->d_bcount += (xfs_qcnt_t)ip->i_d.di_nblocks;
}
STATIC int
xfs_qm_internalqcheck_adjust(
xfs_mount_t *mp, /* mount point for filesystem */
xfs_ino_t ino, /* inode number to get data for */
void __user *buffer, /* not used */
int ubsize, /* not used */
void *private_data, /* not used */
xfs_daddr_t bno, /* starting block of inode cluster */
int *ubused, /* not used */
void *dip, /* not used */
int *res) /* bulkstat result code */
{
xfs_inode_t *ip;
xfs_dqtest_t *ud, *gd;
uint lock_flags;
boolean_t ipreleased;
int error;
ASSERT(XFS_IS_QUOTA_RUNNING(mp));
if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) {
*res = BULKSTAT_RV_NOTHING;
qdprintk("internalqcheck: ino=%llu, uqino=%llu, gqino=%llu\n",
(unsigned long long) ino,
(unsigned long long) mp->m_sb.sb_uquotino,
(unsigned long long) mp->m_sb.sb_gquotino);
return XFS_ERROR(EINVAL);
}
ipreleased = B_FALSE;
again:
lock_flags = XFS_ILOCK_SHARED;
if ((error = xfs_iget(mp, NULL, ino, 0, lock_flags, &ip, bno))) {
*res = BULKSTAT_RV_NOTHING;
return (error);
}
if (ip->i_d.di_mode == 0) {
xfs_iput_new(ip, lock_flags);
*res = BULKSTAT_RV_NOTHING;
return XFS_ERROR(ENOENT);
}
/*
* This inode can have blocks after eof which can get released
* when we send it to inactive. Since we don't check the dquot
* until the after all our calculations are done, we must get rid
* of those now.
*/
if (! ipreleased) {
xfs_iput(ip, lock_flags);
ipreleased = B_TRUE;
goto again;
}
xfs_qm_internalqcheck_get_dquots(mp,
(xfs_dqid_t) ip->i_d.di_uid,
(xfs_dqid_t) ip->i_d.di_projid,
(xfs_dqid_t) ip->i_d.di_gid,
&ud, &gd);
if (XFS_IS_UQUOTA_ON(mp)) {
ASSERT(ud);
xfs_qm_internalqcheck_dqadjust(ip, ud);
}
if (XFS_IS_OQUOTA_ON(mp)) {
ASSERT(gd);
xfs_qm_internalqcheck_dqadjust(ip, gd);
}
xfs_iput(ip, lock_flags);
*res = BULKSTAT_RV_DIDONE;
return (0);
}
/* PRIVATE, debugging */
int
xfs_qm_internalqcheck(
xfs_mount_t *mp)
{
xfs_ino_t lastino;
int done, count;
int i;
xfs_dqtest_t *d, *e;
xfs_dqhash_t *h1;
int error;
lastino = 0;
qmtest_hashmask = 32;
count = 5;
done = 0;
qmtest_nfails = 0;
if (! XFS_IS_QUOTA_ON(mp))
return XFS_ERROR(ESRCH);
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
XFS_bflush(mp->m_ddev_targp);
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
XFS_bflush(mp->m_ddev_targp);
mutex_lock(&qcheck_lock);
/* There should be absolutely no quota activity while this
is going on. */
qmtest_udqtab = kmem_zalloc(qmtest_hashmask *
sizeof(xfs_dqhash_t), KM_SLEEP);
qmtest_gdqtab = kmem_zalloc(qmtest_hashmask *
sizeof(xfs_dqhash_t), KM_SLEEP);
do {
/*
* Iterate thru all the inodes in the file system,
* adjusting the corresponding dquot counters
*/
if ((error = xfs_bulkstat(mp, &lastino, &count,
xfs_qm_internalqcheck_adjust, NULL,
0, NULL, BULKSTAT_FG_IGET, &done))) {
break;
}
} while (! done);
if (error) {
cmn_err(CE_DEBUG, "Bulkstat returned error 0x%x", error);
}
cmn_err(CE_DEBUG, "Checking results against system dquots");
for (i = 0; i < qmtest_hashmask; i++) {
h1 = &qmtest_udqtab[i];
for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
xfs_dqtest_cmp(d);
e = (xfs_dqtest_t *) d->HL_NEXT;
kmem_free(d, sizeof(xfs_dqtest_t));
d = e;
}
h1 = &qmtest_gdqtab[i];
for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
xfs_dqtest_cmp(d);
e = (xfs_dqtest_t *) d->HL_NEXT;
kmem_free(d, sizeof(xfs_dqtest_t));
d = e;
}
}
if (qmtest_nfails) {
cmn_err(CE_DEBUG, "******** quotacheck failed ********");
cmn_err(CE_DEBUG, "failures = %d", qmtest_nfails);
} else {
cmn_err(CE_DEBUG, "******** quotacheck successful! ********");
}
kmem_free(qmtest_udqtab, qmtest_hashmask * sizeof(xfs_dqhash_t));
kmem_free(qmtest_gdqtab, qmtest_hashmask * sizeof(xfs_dqhash_t));
mutex_unlock(&qcheck_lock);
return (qmtest_nfails);
}
#endif /* DEBUG */
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