File: [Development] / xfs-linux / Attic / xfs_qm_syscalls.c (download)
Revision 1.61, Fri May 31 00:44:20 2002 UTC (15 years, 5 months ago) by nathans
Branch: MAIN
Changes since 1.60: +6 -6
lines
kdev_t changes to sync up the 2.4 code base with the 2.5 code (incl.
use of the kdev compat macros, removed pb_dev from page_buf_t, made
XFS_BUF_TARGET use match up with current 2.5, removed unused q_dev
field from xfs_dquot).
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/*
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#include <xfs.h>
#include <xfs_quota_priv.h>
#ifdef DEBUG
# define qdprintk(s, args...) printk(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 *);
int
linvfs_getxstate(
struct super_block *sb,
struct fs_quota_stat *fqs)
{
xfs_mount_t *mp;
vfs_t *vfsp;
vfsp = LINVFS_GET_VFS(sb);
mp = XFS_BHVTOM(vfsp->vfs_fbhv);
return -xfs_qm_scall_getqstat(mp, fqs);
}
int
linvfs_setxstate(
struct super_block *sb,
unsigned int flags,
int op)
{
xfs_mount_t *mp;
vfs_t *vfsp;
uint qflags;
vfsp = LINVFS_GET_VFS(sb);
mp = XFS_BHVTOM(vfsp->vfs_fbhv);
if (vfsp->vfs_flag & VFS_RDONLY)
return -EROFS;
switch (op) {
case Q_XQUOTARM:
if (XFS_IS_QUOTA_ON(mp)) {
qdprintk("cannot remove, quota on: flags=%x\n", flags);
return -EINVAL;
}
qflags = xfs_qm_import_qtype_flags(flags);
return -xfs_qm_scall_trunc_qfiles(mp, qflags);
case Q_XQUOTAON:
qflags = xfs_qm_import_flags(flags);
return -xfs_qm_scall_quotaon(mp, qflags);
case Q_XQUOTAOFF:
qflags = xfs_qm_import_flags(flags);
if (kdev_same(mp->m_dev, rootdev))
return -xfs_qm_scall_quotaoff(mp, qflags, B_FALSE);
if (!XFS_IS_QUOTA_ON(mp))
return -ESRCH;
return -xfs_qm_scall_quotaoff(mp, qflags, B_FALSE);
}
qdprintk("cannot set state, invalid op: op=%x flags=%x\n", op, flags);
return -EINVAL;
}
int
linvfs_getxquota(
struct super_block *sb,
int type,
qid_t id,
struct fs_disk_quota *fdq)
{
xfs_mount_t *mp;
vfs_t *vfsp;
int qtype;
vfsp = LINVFS_GET_VFS(sb);
mp = XFS_BHVTOM(vfsp->vfs_fbhv);
if (!XFS_IS_QUOTA_ON(mp))
return -ESRCH;
qtype = (type == GRPQUOTA)? XFS_DQ_GROUP : XFS_DQ_USER;
return -xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, qtype, fdq);
}
int
linvfs_setxquota(
struct super_block *sb,
int type,
qid_t id,
struct fs_disk_quota *fdq)
{
xfs_mount_t *mp;
vfs_t *vfsp;
int qtype;
vfsp = LINVFS_GET_VFS(sb);
mp = XFS_BHVTOM(vfsp->vfs_fbhv);
if (!XFS_IS_QUOTA_ON(mp))
return -ESRCH;
if (vfsp->vfs_flag & VFS_RDONLY)
return -EROFS;
qtype = (type == GRPQUOTA)? XFS_DQ_GROUP : XFS_DQ_USER;
return xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, qtype, fdq);
}
/*
* 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;
uint sbflags, newflags;
int nculprits;
if (!force && !capable(CAP_SYS_ADMIN))
return XFS_ERROR(EPERM);
/*
* Only root file system can have quotas enabled on disk but not
* in core. Note that quota utilities (like quotaoff) _expect_
* errno == EEXIST here.
*/
if (!kdev_same(mp->m_dev, rootdev) && (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 || kdev_same(mp->m_dev, rootdev));
if (mp->m_quotainfo)
mutex_lock(&(XFS_QI_QOFFLOCK(mp)), PINOD);
/*
* Root file system may or may not have quotas on in core.
* We have to perform the quotaoff accordingly.
*/
if (kdev_same(mp->m_dev, rootdev)) {
s = XFS_SB_LOCK(mp);
sbflags = mp->m_sb.sb_qflags;
if ((mp->m_qflags & flags) == 0) {
mp->m_sb.sb_qflags &= ~(flags);
newflags = mp->m_sb.sb_qflags;
XFS_SB_UNLOCK(mp, s);
if (mp->m_quotainfo)
mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
if (sbflags != newflags)
error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
return (error);
}
XFS_SB_UNLOCK(mp, s);
if ((sbflags & flags) != (mp->m_qflags & flags)) {
/*
* This can happen only with grp+usr quota
* combination. Note: 1) accounting cannot be turned
* off without enforcement also getting turned off.
* 2) Every flag that exists in mpqflags MUST exist
* in sbqflags (but not vice versa).
* which means at this point sbqflags = UQ+GQ+..,
* and mpqflags = UQ or GQ.
*/
ASSERT(sbflags & XFS_GQUOTA_ACCT);
ASSERT((sbflags & XFS_ALL_QUOTA_ACCT) !=
(mp->m_qflags & XFS_ALL_QUOTA_ACCT));
qdprintk("quotaoff, sbflags=%x flags=%x m_qflags=%x\n",
sbflags, flags, mp->m_qflags);
/* XXX TBD Finish this for group quota support */
/* We need to update the SB and mp separately */
return XFS_ERROR(EINVAL);
}
}
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_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
inactivate_flags |= XFS_GQUOTA_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_ALL) {
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_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, &qip, 0);
if (! error) {
(void) xfs_truncate_file(mp, qip);
VN_RELE(XFS_ITOV(qip));
}
}
if ((flags & XFS_DQ_GROUP) && mp->m_sb.sb_gquotino != NULLFSINO) {
error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, &qip, 0);
if (! error) {
(void) xfs_truncate_file(mp, qip);
VN_RELE(XFS_ITOV(qip));
}
}
return (error);
}
/*
* This does two separate functions:
* Switch on quotas for the root file system. This will take effect only
* on reboot.
* Switch on (a given) quota enforcement for both root and non-root filesystems.
* This takes effect immediately.
*/
STATIC int
xfs_qm_scall_quotaon(
xfs_mount_t *mp,
uint flags)
{
int error;
unsigned long s;
uint qf;
uint accflags;
__int64_t sbflags;
boolean_t rootfs;
boolean_t delay;
if (!capable(CAP_SYS_ADMIN))
return XFS_ERROR(EPERM);
rootfs = (boolean_t) kdev_same(mp->m_dev, rootdev);
flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
/*
* If caller wants to turn on accounting on /, but accounting
* is already turned on, ignore ACCTing flags.
* Switching on quota accounting for non-root filesystems
* must be done at mount time.
*/
accflags = flags & XFS_ALL_QUOTA_ACCT;
if (!rootfs ||
(accflags && rootfs && ((mp->m_qflags & accflags) == accflags))) {
flags &= ~(XFS_ALL_QUOTA_ACCT);
}
sbflags = 0;
delay = (boolean_t) ((flags & XFS_ALL_QUOTA_ACCT) != 0);
if (flags == 0) {
qdprintk("quotaon: zero flags, m_qflags=%x\n", mp->m_qflags);
return XFS_ERROR(EINVAL);
}
/* Only rootfs can turn on quotas with a delayed effect */
ASSERT(!delay || rootfs);
/*
* 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_GQUOTA_ACCT) == 0 &&
(mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
(flags & XFS_GQUOTA_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 superblock version (if needed) for the root filesystem
*/
if (rootfs && !XFS_SB_VERSION_HASQUOTA(&mp->m_sb)) {
qdprintk("Old superblock version %x\n", mp->m_sb.sb_versionnum);
s = XFS_SB_LOCK(mp);
XFS_SB_VERSION_ADDQUOTA(&mp->m_sb);
mp->m_sb.sb_uquotino = NULLFSINO;
mp->m_sb.sb_gquotino = NULLFSINO;
mp->m_sb.sb_qflags = 0;
XFS_SB_UNLOCK(mp, s);
qdprintk("Converted to version %x\n", mp->m_sb.sb_versionnum);
sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO |
XFS_SB_GQUOTINO | XFS_SB_QFLAGS);
}
/*
* 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 had just turned on quotas (ondisk) for rootfs, or if we aren't
* trying to switch on quota enforcement, we are done.
*/
if (delay ||
((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
(mp->m_qflags & XFS_UQUOTA_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. This applies to both root
* and non-root file systems.
*/
mutex_lock(&(XFS_QI_QOFFLOCK(mp)), PINOD);
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;
__uint16_t sbflags;
uip = gip = NULL;
tempuqip = tempgqip = B_FALSE;
bzero(out, 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));
/*
* If the qflags are different on disk, as can be the case when
* root filesystem's quotas are being turned on, return them in the
* HI 8 bits.
*/
if (kdev_same(mp->m_dev, rootdev)) {
sbflags = (__uint16_t) xfs_qm_export_flags(mp->m_sb.sb_qflags &
(XFS_ALL_QUOTA_ACCT|
XFS_ALL_QUOTA_ENFD));
ASSERT((out->qs_flags & 0xff00) == 0);
if (sbflags != out->qs_flags)
out->qs_flags |= ((sbflags & 0x00ff) << 8);
}
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, &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, &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)) == 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)), PINOD);
/*
* 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) :
INT_GET(ddq->d_blk_hardlimit, ARCH_CONVERT);
soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
(xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
INT_GET(ddq->d_blk_softlimit, ARCH_CONVERT);
if (hard == 0 || hard >= soft) {
INT_SET(ddq->d_blk_hardlimit, ARCH_CONVERT, hard);
INT_SET(ddq->d_blk_softlimit, ARCH_CONVERT, 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) :
INT_GET(ddq->d_rtb_hardlimit, ARCH_CONVERT);
soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
(xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
INT_GET(ddq->d_rtb_softlimit, ARCH_CONVERT);
if (hard == 0 || hard >= soft) {
INT_SET(ddq->d_rtb_hardlimit, ARCH_CONVERT, hard);
INT_SET(ddq->d_rtb_softlimit, ARCH_CONVERT, soft);
}
else
qdprintk("rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
(xfs_qcnt_t) newlim->d_ino_hardlimit :
INT_GET(ddq->d_ino_hardlimit, ARCH_CONVERT);
soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
(xfs_qcnt_t) newlim->d_ino_softlimit :
INT_GET(ddq->d_ino_softlimit, ARCH_CONVERT);
if (hard == 0 || hard >= soft) {
INT_SET(ddq->d_ino_hardlimit, ARCH_CONVERT, hard);
INT_SET(ddq->d_ino_softlimit, ARCH_CONVERT, soft);
}
else
qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
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.
*/
if (newlim->d_fieldmask & FS_DQ_BTIMER) {
mp->m_quotainfo->qi_btimelimit = newlim->d_btimer;
INT_SET(dqp->q_core.d_btimer, ARCH_CONVERT, newlim->d_btimer);
}
if (newlim->d_fieldmask & FS_DQ_ITIMER) {
mp->m_quotainfo->qi_itimelimit = newlim->d_itimer;
INT_SET(dqp->q_core.d_itimer, ARCH_CONVERT, newlim->d_itimer);
}
if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
mp->m_quotainfo->qi_rtbtimelimit = newlim->d_rtbtimer;
INT_SET(dqp->q_core.d_rtbtimer, ARCH_CONVERT, newlim->d_rtbtimer);
}
} else /* if (XFS_IS_QUOTA_ENFORCED(mp)) */ {
/*
* 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, NULL);
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, NULL);
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, NULL);
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)
{
bzero(dst, sizeof(*dst));
dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */
dst->d_flags =
xfs_qm_export_qtype_flags(INT_GET(src->d_flags, ARCH_CONVERT));
dst->d_id = INT_GET(src->d_id, ARCH_CONVERT);
dst->d_blk_hardlimit = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_blk_hardlimit, ARCH_CONVERT));
dst->d_blk_softlimit = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_blk_softlimit, ARCH_CONVERT));
dst->d_ino_hardlimit = (__uint64_t)
INT_GET(src->d_ino_hardlimit, ARCH_CONVERT);
dst->d_ino_softlimit = (__uint64_t)
INT_GET(src->d_ino_softlimit, ARCH_CONVERT);
dst->d_bcount = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_bcount, ARCH_CONVERT));
dst->d_icount = (__uint64_t) INT_GET(src->d_icount, ARCH_CONVERT);
dst->d_btimer = (__uint32_t) INT_GET(src->d_btimer, ARCH_CONVERT);
dst->d_itimer = (__uint32_t) INT_GET(src->d_itimer, ARCH_CONVERT);
dst->d_iwarns = INT_GET(src->d_iwarns, ARCH_CONVERT);
dst->d_bwarns = INT_GET(src->d_bwarns, ARCH_CONVERT);
dst->d_rtb_hardlimit = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_rtb_hardlimit, ARCH_CONVERT));
dst->d_rtb_softlimit = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_rtb_softlimit, ARCH_CONVERT));
dst->d_rtbcount = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_rtbcount, ARCH_CONVERT));
dst->d_rtbtimer = (__uint32_t) INT_GET(src->d_rtbtimer, ARCH_CONVERT);
dst->d_rtbwarns = INT_GET(src->d_rtbwarns, ARCH_CONVERT);
/*
* Internally, we don't reset all the timers when quota enforcement
* gets turned off. No need to confuse the userlevel code,
* so return zeroes in that case.
*/
if (! XFS_IS_QUOTA_ENFORCED(mp)) {
dst->d_btimer = 0;
dst->d_itimer = 0;
dst->d_rtbtimer = 0;
}
#ifdef DEBUG
if (XFS_IS_QUOTA_ENFORCED(mp) && 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)
{
/*
* Can't be both at the same time.
*/
if (((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ==
(XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ||
((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) == 0))
return (0);
return (uflags & XFS_USER_QUOTA) ?
XFS_DQ_USER : XFS_DQ_GROUP;
}
STATIC uint
xfs_qm_export_qtype_flags(
uint flags)
{
/*
* Can't be both at the same time.
*/
ASSERT((flags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) !=
(XFS_GROUP_QUOTA | XFS_USER_QUOTA));
ASSERT((flags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) != 0);
return (flags & XFS_DQ_USER) ?
XFS_USER_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_GDQ_ACCT)
flags |= XFS_GQUOTA_ACCT;
if (uflags & XFS_QUOTA_UDQ_ENFD)
flags |= XFS_UQUOTA_ENFD;
if (uflags & XFS_QUOTA_GDQ_ENFD)
flags |= XFS_GQUOTA_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_GQUOTA_ACCT)
uflags |= XFS_QUOTA_GDQ_ACCT;
if (flags & XFS_UQUOTA_ENFD)
uflags |= XFS_QUOTA_UDQ_ENFD;
if (flags & XFS_GQUOTA_ENFD)
uflags |= XFS_QUOTA_GDQ_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)
{
vmap_t vmap;
xfs_inode_t *ip, *topino;
uint ireclaims;
vnode_t *vp;
boolean_t vnode_refd;
ASSERT(mp->m_quotainfo);
again:
XFS_MOUNT_ILOCK(mp);
ip = mp->m_inodes;
if (ip == NULL) {
XFS_MOUNT_IUNLOCK(mp);
return;
}
do {
/*
* skip markers from xfs_sync
*/
if (ip->i_mount == NULL) {
ip = ip->i_mnext;
continue;
}
/*
* Rootinode, rbmip and rsumip have blocks associated with it.
*/
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(ip);
vnode_refd = B_FALSE;
if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
/*
* Sample vp mapping while holding the mplock, lest
* we come across a non-existent vnode.
*/
VMAP(vp, ip, vmap);
ireclaims = mp->m_ireclaims;
topino = mp->m_inodes;
XFS_MOUNT_IUNLOCK(mp);
/* XXX restart limit ? */
if ( ! (vp = vn_get(vp, &vmap, 0)))
goto again;
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_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 */
XFS_MOUNT_IUNLOCK(mp);
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;\
printk("%s (#%d)\n", title, (int) (l)->qh_nelems); \
for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
dqp = (xfs_dqtest_t *)dqp->NXT) { \
printk("\t%d\.\t\"%d (%s)\"\t bcnt = %d, icnt = %d\n", \
++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)
{
printk("-----------DQTEST DQUOT----------------\n");
printk("---- dquot ID = %d\n", d->d_id);
printk("---- type = %s\n", XFS_QM_ISUDQ(d) ? "USR" : "GRP");
printk("---- fs = 0x%p\n", d->q_mount);
printk("---- bcount = %Lu (0x%x)\n", d->d_bcount, (int)d->d_bcount);
printk("---- icount = %Lu (0x%x)\n", d->d_icount, (int)d->d_icount);
printk("---------------------------\n");
}
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)
printk("quotacheck failed for %d, error = %d\nreason = %s\n",
INT_GET(d->d_id, ARCH_CONVERT), error, reason);
else
printk("quotacheck failed for %d (%s) [%d != %d]\n",
INT_GET(d->d_id, ARCH_CONVERT), 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 (INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) != d->d_icount) {
xfs_qm_dqtest_failed(d, dqp, "icount mismatch",
INT_GET(dqp->q_core.d_icount, ARCH_CONVERT), d->d_icount, 0);
err++;
}
if (INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT) != d->d_bcount) {
xfs_qm_dqtest_failed(d, dqp, "bcount mismatch",
INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT), d->d_bcount, 0);
err++;
}
if (INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT) &&
INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT) >= INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT)) {
if (INT_ISZERO(dqp->q_core.d_btimer, ARCH_CONVERT) &&
!INT_ISZERO(dqp->q_core.d_id, ARCH_CONVERT)) {
printk("%d [%s] [0x%p] BLK TIMER NOT STARTED\n",
d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
err++;
}
}
if (INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT) &&
INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >= INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT)) {
if (INT_ISZERO(dqp->q_core.d_itimer, ARCH_CONVERT) &&
!INT_ISZERO(dqp->q_core.d_id, ARCH_CONVERT)) {
printk("%d [%s] [0x%p] INO TIMER NOT STARTED\n",
d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
err++;
}
}
#if 0
if (!err) {
printk("%d [%s] [0x%p] qchecked\n",
d->d_id, XFS_QM_ISUDQ(d) ? "USR" : "GRP", 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 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);
}
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_trans_t *tp, /* transaction pointer */
xfs_ino_t ino, /* inode number to get data for */
void *buffer, /* not used */
xfs_daddr_t bno, /* starting block of inode cluster */
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, tp, ino, 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_gid,
&ud, &gd);
if (XFS_IS_UQUOTA_ON(mp)) {
ASSERT(ud);
xfs_qm_internalqcheck_dqadjust(ip, ud);
}
if (XFS_IS_GQUOTA_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_targ);
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
XFS_bflush(mp->m_ddev_targ);
mutex_lock(&qcheck_lock, PINOD);
/* 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, NULL, &lastino, &count,
xfs_qm_internalqcheck_adjust,
0, NULL, BULKSTAT_FG_IGET, &done))) {
break;
}
} while (! done);
if (error) {
printk("Bulkstat returned error 0x%x\n",
error);
}
printk("Checking results against system dquots\n");
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) {
printk("************** quotacheck failed **************\n");
printk("failures = %d\n", qmtest_nfails);
} else {
printk("************** quotacheck successful! **************\n");
}
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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