/* * Copyright (c) 2000-2002 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_fs.h" #include "xfs_inum.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_dir.h" #include "xfs_dir2.h" #include "xfs_alloc.h" #include "xfs_dmapi.h" #include "xfs_quota.h" #include "xfs_mount.h" #include "xfs_alloc_btree.h" #include "xfs_bmap_btree.h" #include "xfs_ialloc_btree.h" #include "xfs_btree.h" #include "xfs_ialloc.h" #include "xfs_attr_sf.h" #include "xfs_dir_sf.h" #include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_bmap.h" #include "xfs_bit.h" #include "xfs_rtalloc.h" #include "xfs_error.h" #include "xfs_itable.h" #include "xfs_rw.h" #include "xfs_acl.h" #include "xfs_cap.h" #include "xfs_mac.h" #include "xfs_attr.h" #include "xfs_buf_item.h" #include "xfs_trans_priv.h" #include "xfs_qm.h" STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *); /* * Add the locked dquot to the transaction. * The dquot must be locked, and it cannot be associated with any * transaction. */ void xfs_trans_dqjoin( xfs_trans_t *tp, xfs_dquot_t *dqp) { xfs_dq_logitem_t *lp; ASSERT(! XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); ASSERT(XFS_DQ_IS_LOCKED(dqp)); ASSERT(XFS_DQ_IS_LOGITEM_INITD(dqp)); lp = &dqp->q_logitem; /* * Get a log_item_desc to point at the new item. */ (void) xfs_trans_add_item(tp, (xfs_log_item_t*)(lp)); /* * Initialize i_transp so we can later determine if this dquot is * associated with this transaction. */ dqp->q_transp = tp; } /* * This is called to mark the dquot as needing * to be logged when the transaction is committed. The dquot must * already be associated with the given transaction. * Note that it marks the entire transaction as dirty. In the ordinary * case, this gets called via xfs_trans_commit, after the transaction * is already dirty. However, there's nothing stop this from getting * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY * flag. */ void xfs_trans_log_dquot( xfs_trans_t *tp, xfs_dquot_t *dqp) { xfs_log_item_desc_t *lidp; ASSERT(XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); ASSERT(XFS_DQ_IS_LOCKED(dqp)); lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)(&dqp->q_logitem)); ASSERT(lidp != NULL); tp->t_flags |= XFS_TRANS_DIRTY; lidp->lid_flags |= XFS_LID_DIRTY; } /* * Carry forward whatever is left of the quota blk reservation to * the spanky new transaction */ STATIC void xfs_trans_dup_dqinfo( xfs_trans_t *otp, xfs_trans_t *ntp) { xfs_dqtrx_t *oq, *nq; int i,j; xfs_dqtrx_t *oqa, *nqa; if (!otp->t_dqinfo) return; xfs_trans_alloc_dqinfo(ntp); oqa = otp->t_dqinfo->dqa_usrdquots; nqa = ntp->t_dqinfo->dqa_usrdquots; /* * Because the quota blk reservation is carried forward, * it is also necessary to carry forward the DQ_DIRTY flag. */ if(otp->t_flags & XFS_TRANS_DQ_DIRTY) ntp->t_flags |= XFS_TRANS_DQ_DIRTY; for (j = 0; j < 2; j++) { for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { if (oqa[i].qt_dquot == NULL) break; oq = &oqa[i]; nq = &nqa[i]; nq->qt_dquot = oq->qt_dquot; nq->qt_bcount_delta = nq->qt_icount_delta = 0; nq->qt_rtbcount_delta = 0; /* * Transfer whatever is left of the reservations. */ nq->qt_blk_res = oq->qt_blk_res - oq->qt_blk_res_used; oq->qt_blk_res = oq->qt_blk_res_used; nq->qt_rtblk_res = oq->qt_rtblk_res - oq->qt_rtblk_res_used; oq->qt_rtblk_res = oq->qt_rtblk_res_used; nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used; oq->qt_ino_res = oq->qt_ino_res_used; } oqa = otp->t_dqinfo->dqa_grpdquots; nqa = ntp->t_dqinfo->dqa_grpdquots; } } /* * Wrap around mod_dquot to account for both user and group quotas. */ STATIC void xfs_trans_mod_dquot_byino( xfs_trans_t *tp, xfs_inode_t *ip, uint field, long delta) { xfs_mount_t *mp; ASSERT(tp); mp = tp->t_mountp; if (!XFS_IS_QUOTA_ON(mp) || ip->i_ino == mp->m_sb.sb_uquotino || ip->i_ino == mp->m_sb.sb_gquotino) return; if (tp->t_dqinfo == NULL) xfs_trans_alloc_dqinfo(tp); if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) { (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta); } if (XFS_IS_GQUOTA_ON(mp) && ip->i_gdquot) { (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta); } } STATIC xfs_dqtrx_t * xfs_trans_get_dqtrx( xfs_trans_t *tp, xfs_dquot_t *dqp) { int i; xfs_dqtrx_t *qa; for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { qa = XFS_QM_DQP_TO_DQACCT(tp, dqp); if (qa[i].qt_dquot == NULL || qa[i].qt_dquot == dqp) { return (&qa[i]); } } return (NULL); } /* * Make the changes in the transaction structure. * The moral equivalent to xfs_trans_mod_sb(). * We don't touch any fields in the dquot, so we don't care * if it's locked or not (most of the time it won't be). */ void xfs_trans_mod_dquot( xfs_trans_t *tp, xfs_dquot_t *dqp, uint field, long delta) { xfs_dqtrx_t *qtrx; ASSERT(tp); qtrx = NULL; if (tp->t_dqinfo == NULL) xfs_trans_alloc_dqinfo(tp); /* * Find either the first free slot or the slot that belongs * to this dquot. */ qtrx = xfs_trans_get_dqtrx(tp, dqp); ASSERT(qtrx); if (qtrx->qt_dquot == NULL) qtrx->qt_dquot = dqp; switch (field) { /* * regular disk blk reservation */ case XFS_TRANS_DQ_RES_BLKS: qtrx->qt_blk_res += (ulong)delta; break; /* * inode reservation */ case XFS_TRANS_DQ_RES_INOS: qtrx->qt_ino_res += (ulong)delta; break; /* * disk blocks used. */ case XFS_TRANS_DQ_BCOUNT: if (qtrx->qt_blk_res && delta > 0) { qtrx->qt_blk_res_used += (ulong)delta; ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used); } qtrx->qt_bcount_delta += delta; break; case XFS_TRANS_DQ_DELBCOUNT: qtrx->qt_delbcnt_delta += delta; break; /* * Inode Count */ case XFS_TRANS_DQ_ICOUNT: if (qtrx->qt_ino_res && delta > 0) { qtrx->qt_ino_res_used += (ulong)delta; ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); } qtrx->qt_icount_delta += delta; break; /* * rtblk reservation */ case XFS_TRANS_DQ_RES_RTBLKS: qtrx->qt_rtblk_res += (ulong)delta; break; /* * rtblk count */ case XFS_TRANS_DQ_RTBCOUNT: if (qtrx->qt_rtblk_res && delta > 0) { qtrx->qt_rtblk_res_used += (ulong)delta; ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used); } qtrx->qt_rtbcount_delta += delta; break; case XFS_TRANS_DQ_DELRTBCOUNT: qtrx->qt_delrtb_delta += delta; break; default: ASSERT(0); } tp->t_flags |= XFS_TRANS_DQ_DIRTY; } /* * Given an array of dqtrx structures, lock all the dquots associated * and join them to the transaction, provided they have been modified. * We know that the highest number of dquots (of one type - usr OR grp), * involved in a transaction is 2 and that both usr and grp combined - 3. * So, we don't attempt to make this very generic. */ STATIC void xfs_trans_dqlockedjoin( xfs_trans_t *tp, xfs_dqtrx_t *q) { ASSERT(q[0].qt_dquot != NULL); if (q[1].qt_dquot == NULL) { xfs_dqlock(q[0].qt_dquot); xfs_trans_dqjoin(tp, q[0].qt_dquot); } else { ASSERT(XFS_QM_TRANS_MAXDQS == 2); xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot); xfs_trans_dqjoin(tp, q[0].qt_dquot); xfs_trans_dqjoin(tp, q[1].qt_dquot); } } /* * Called by xfs_trans_commit() and similar in spirit to * xfs_trans_apply_sb_deltas(). * Go thru all the dquots belonging to this transaction and modify the * INCORE dquot to reflect the actual usages. * Unreserve just the reservations done by this transaction. * dquot is still left locked at exit. */ STATIC void xfs_trans_apply_dquot_deltas( xfs_trans_t *tp) { int i, j; xfs_dquot_t *dqp; xfs_dqtrx_t *qtrx, *qa; xfs_disk_dquot_t *d; long totalbdelta; long totalrtbdelta; if (! (tp->t_flags & XFS_TRANS_DQ_DIRTY)) return; ASSERT(tp->t_dqinfo); qa = tp->t_dqinfo->dqa_usrdquots; for (j = 0; j < 2; j++) { if (qa[0].qt_dquot == NULL) { qa = tp->t_dqinfo->dqa_grpdquots; continue; } /* * Lock all of the dquots and join them to the transaction. */ xfs_trans_dqlockedjoin(tp, qa); for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { qtrx = &qa[i]; /* * The array of dquots is filled * sequentially, not sparsely. */ if ((dqp = qtrx->qt_dquot) == NULL) break; ASSERT(XFS_DQ_IS_LOCKED(dqp)); ASSERT(XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); /* * adjust the actual number of blocks used */ d = &dqp->q_core; /* * The issue here is - sometimes we don't make a blkquota * reservation intentionally to be fair to users * (when the amount is small). On the other hand, * delayed allocs do make reservations, but that's * outside of a transaction, so we have no * idea how much was really reserved. * So, here we've accumulated delayed allocation blks and * non-delay blks. The assumption is that the * delayed ones are always reserved (outside of a * transaction), and the others may or may not have * quota reservations. */ totalbdelta = qtrx->qt_bcount_delta + qtrx->qt_delbcnt_delta; totalrtbdelta = qtrx->qt_rtbcount_delta + qtrx->qt_delrtb_delta; #ifdef QUOTADEBUG if (totalbdelta < 0) ASSERT(INT_GET(d->d_bcount, ARCH_CONVERT) >= (xfs_qcnt_t) -totalbdelta); if (totalrtbdelta < 0) ASSERT(INT_GET(d->d_rtbcount, ARCH_CONVERT) >= (xfs_qcnt_t) -totalrtbdelta); if (qtrx->qt_icount_delta < 0) ASSERT(INT_GET(d->d_icount, ARCH_CONVERT) >= (xfs_qcnt_t) -qtrx->qt_icount_delta); #endif if (totalbdelta) INT_MOD(d->d_bcount, ARCH_CONVERT, (xfs_qcnt_t)totalbdelta); if (qtrx->qt_icount_delta) INT_MOD(d->d_icount, ARCH_CONVERT, (xfs_qcnt_t)qtrx->qt_icount_delta); if (totalrtbdelta) INT_MOD(d->d_rtbcount, ARCH_CONVERT, (xfs_qcnt_t)totalrtbdelta); /* * Get any default limits in use. * Start/reset the timer(s) if needed. */ if (d->d_id) { xfs_qm_adjust_dqlimits(tp->t_mountp, d); xfs_qm_adjust_dqtimers(tp->t_mountp, d); } dqp->dq_flags |= XFS_DQ_DIRTY; /* * add this to the list of items to get logged */ xfs_trans_log_dquot(tp, dqp); /* * Take off what's left of the original reservation. * In case of delayed allocations, there's no * reservation that a transaction structure knows of. */ if (qtrx->qt_blk_res != 0) { if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) { if (qtrx->qt_blk_res > qtrx->qt_blk_res_used) dqp->q_res_bcount -= (xfs_qcnt_t) (qtrx->qt_blk_res - qtrx->qt_blk_res_used); else dqp->q_res_bcount -= (xfs_qcnt_t) (qtrx->qt_blk_res_used - qtrx->qt_blk_res); } } else { /* * These blks were never reserved, either inside * a transaction or outside one (in a delayed * allocation). Also, this isn't always a * negative number since we sometimes * deliberately skip quota reservations. */ if (qtrx->qt_bcount_delta) { dqp->q_res_bcount += (xfs_qcnt_t)qtrx->qt_bcount_delta; } } /* * Adjust the RT reservation. */ if (qtrx->qt_rtblk_res != 0) { if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) { if (qtrx->qt_rtblk_res > qtrx->qt_rtblk_res_used) dqp->q_res_rtbcount -= (xfs_qcnt_t) (qtrx->qt_rtblk_res - qtrx->qt_rtblk_res_used); else dqp->q_res_rtbcount -= (xfs_qcnt_t) (qtrx->qt_rtblk_res_used - qtrx->qt_rtblk_res); } } else { if (qtrx->qt_rtbcount_delta) dqp->q_res_rtbcount += (xfs_qcnt_t)qtrx->qt_rtbcount_delta; } /* * Adjust the inode reservation. */ if (qtrx->qt_ino_res != 0) { ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); if (qtrx->qt_ino_res > qtrx->qt_ino_res_used) dqp->q_res_icount -= (xfs_qcnt_t) (qtrx->qt_ino_res - qtrx->qt_ino_res_used); } else { if (qtrx->qt_icount_delta) dqp->q_res_icount += (xfs_qcnt_t)qtrx->qt_icount_delta; } #ifdef QUOTADEBUG if (qtrx->qt_rtblk_res != 0) cmn_err(CE_DEBUG, "RT res %d for 0x%p\n", (int) qtrx->qt_rtblk_res, dqp); #endif ASSERT(dqp->q_res_bcount >= INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT)); ASSERT(dqp->q_res_icount >= INT_GET(dqp->q_core.d_icount, ARCH_CONVERT)); ASSERT(dqp->q_res_rtbcount >= INT_GET(dqp->q_core.d_rtbcount, ARCH_CONVERT)); } /* * Do the group quotas next */ qa = tp->t_dqinfo->dqa_grpdquots; } } /* * Release the reservations, and adjust the dquots accordingly. * This is called only when the transaction is being aborted. If by * any chance we have done dquot modifications incore (ie. deltas) already, * we simply throw those away, since that's the expected behavior * when a transaction is curtailed without a commit. */ STATIC void xfs_trans_unreserve_and_mod_dquots( xfs_trans_t *tp) { int i, j; xfs_dquot_t *dqp; xfs_dqtrx_t *qtrx, *qa; boolean_t locked; if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY)) return; qa = tp->t_dqinfo->dqa_usrdquots; for (j = 0; j < 2; j++) { for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { qtrx = &qa[i]; /* * We assume that the array of dquots is filled * sequentially, not sparsely. */ if ((dqp = qtrx->qt_dquot) == NULL) break; /* * Unreserve the original reservation. We don't care * about the number of blocks used field, or deltas. * Also we don't bother to zero the fields. */ locked = B_FALSE; if (qtrx->qt_blk_res) { xfs_dqlock(dqp); locked = B_TRUE; dqp->q_res_bcount -= (xfs_qcnt_t)qtrx->qt_blk_res; } if (qtrx->qt_ino_res) { if (!locked) { xfs_dqlock(dqp); locked = B_TRUE; } dqp->q_res_icount -= (xfs_qcnt_t)qtrx->qt_ino_res; } if (qtrx->qt_rtblk_res) { if (!locked) { xfs_dqlock(dqp); locked = B_TRUE; } dqp->q_res_rtbcount -= (xfs_qcnt_t)qtrx->qt_rtblk_res; } if (locked) xfs_dqunlock(dqp); } qa = tp->t_dqinfo->dqa_grpdquots; } } /* * This reserves disk blocks and inodes against a dquot. * Flags indicate if the dquot is to be locked here and also * if the blk reservation is for RT or regular blocks. * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check. * Returns EDQUOT if quota is exceeded. */ STATIC int xfs_trans_dqresv( xfs_trans_t *tp, xfs_mount_t *mp, xfs_dquot_t *dqp, long nblks, long ninos, uint flags) { int error; xfs_qcnt_t hardlimit; xfs_qcnt_t softlimit; time_t btimer; xfs_qcnt_t *resbcountp; xfs_quotainfo_t *q = mp->m_quotainfo; if (! (flags & XFS_QMOPT_DQLOCK)) { xfs_dqlock(dqp); } ASSERT(XFS_DQ_IS_LOCKED(dqp)); if (flags & XFS_TRANS_DQ_RES_BLKS) { hardlimit = INT_GET(dqp->q_core.d_blk_hardlimit, ARCH_CONVERT); if (!hardlimit) hardlimit = q->qi_bhardlimit; softlimit = INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT); if (!softlimit) softlimit = q->qi_bsoftlimit; btimer = INT_GET(dqp->q_core.d_btimer, ARCH_CONVERT); resbcountp = &dqp->q_res_bcount; } else { ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS); hardlimit = INT_GET(dqp->q_core.d_rtb_hardlimit, ARCH_CONVERT); if (!hardlimit) hardlimit = q->qi_rtbhardlimit; softlimit = INT_GET(dqp->q_core.d_rtb_softlimit, ARCH_CONVERT); if (!softlimit) softlimit = q->qi_rtbsoftlimit; btimer = INT_GET(dqp->q_core.d_rtbtimer, ARCH_CONVERT); resbcountp = &dqp->q_res_rtbcount; } error = 0; if ((flags & XFS_QMOPT_FORCE_RES) == 0 && dqp->q_core.d_id && XFS_IS_QUOTA_ENFORCED(dqp->q_mount)) { #ifdef QUOTADEBUG cmn_err(CE_DEBUG, "BLK Res: nblks=%ld + resbcount=%Ld" " > hardlimit=%Ld?", nblks, *resbcountp, hardlimit); #endif if (nblks > 0) { /* * dquot is locked already. See if we'd go over the * hardlimit or exceed the timelimit if we allocate * nblks. */ if (hardlimit > 0ULL && (hardlimit <= nblks + *resbcountp)) { error = EDQUOT; goto error_return; } if (softlimit > 0ULL && (softlimit <= nblks + *resbcountp)) { /* * If timer or warnings has expired, * return EDQUOT */ if ((btimer != 0 && get_seconds() > btimer) || (dqp->q_core.d_bwarns && INT_GET(dqp->q_core.d_bwarns, ARCH_CONVERT) >= XFS_QI_BWARNLIMIT(dqp->q_mount))) { error = EDQUOT; goto error_return; } } } if (ninos > 0) { hardlimit = INT_GET(dqp->q_core.d_ino_hardlimit, ARCH_CONVERT); if (!hardlimit) hardlimit = q->qi_ihardlimit; softlimit = INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT); if (!softlimit) softlimit = q->qi_isoftlimit; if (hardlimit > 0ULL && INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >= hardlimit) { error = EDQUOT; goto error_return; } else if (softlimit > 0ULL && INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >= softlimit) { /* * If timer or warnings has expired, * return EDQUOT */ if ((dqp->q_core.d_itimer && get_seconds() > INT_GET(dqp->q_core.d_itimer, ARCH_CONVERT)) || (dqp->q_core.d_iwarns && INT_GET(dqp->q_core.d_iwarns, ARCH_CONVERT) >= XFS_QI_IWARNLIMIT(dqp->q_mount))) { error = EDQUOT; goto error_return; } } } } /* * Change the reservation, but not the actual usage. * Note that q_res_bcount = q_core.d_bcount + resv */ (*resbcountp) += (xfs_qcnt_t)nblks; if (ninos != 0) dqp->q_res_icount += (xfs_qcnt_t)ninos; /* * note the reservation amt in the trans struct too, * so that the transaction knows how much was reserved by * it against this particular dquot. * We don't do this when we are reserving for a delayed allocation, * because we don't have the luxury of a transaction envelope then. */ if (tp) { ASSERT(tp->t_dqinfo); ASSERT(flags & XFS_QMOPT_RESBLK_MASK); if (nblks != 0) xfs_trans_mod_dquot(tp, dqp, flags & XFS_QMOPT_RESBLK_MASK, nblks); if (ninos != 0) xfs_trans_mod_dquot(tp, dqp, XFS_TRANS_DQ_RES_INOS, ninos); } ASSERT(dqp->q_res_bcount >= INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT)); ASSERT(dqp->q_res_rtbcount >= INT_GET(dqp->q_core.d_rtbcount, ARCH_CONVERT)); ASSERT(dqp->q_res_icount >= INT_GET(dqp->q_core.d_icount, ARCH_CONVERT)); error_return: if (! (flags & XFS_QMOPT_DQLOCK)) { xfs_dqunlock(dqp); } return (error); } /* * Given a dquot(s), make disk block and/or inode reservations against them. * The fact that this does the reservation against both the usr and * grp quotas is important, because this follows a both-or-nothing * approach. * * flags = XFS_QMOPT_DQLOCK indicate if dquot(s) need to be locked. * XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown. * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks * dquots are unlocked on return, if they were not locked by caller. */ int xfs_trans_reserve_quota_bydquots( xfs_trans_t *tp, xfs_mount_t *mp, xfs_dquot_t *udqp, xfs_dquot_t *gdqp, long nblks, long ninos, uint flags) { int resvd; if (! XFS_IS_QUOTA_ON(mp)) return (0); if (tp && tp->t_dqinfo == NULL) xfs_trans_alloc_dqinfo(tp); ASSERT(flags & XFS_QMOPT_RESBLK_MASK); resvd = 0; if (udqp) { if (xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, flags)) return (EDQUOT); resvd = 1; } if (gdqp) { if (xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags)) { /* * can't do it, so backout previous reservation */ if (resvd) { flags |= XFS_QMOPT_FORCE_RES; xfs_trans_dqresv(tp, mp, udqp, -nblks, -ninos, flags); } return (EDQUOT); } } /* * Didnt change anything critical, so, no need to log */ return (0); } /* * Lock the dquot and change the reservation if we can. * This doesn't change the actual usage, just the reservation. * The inode sent in is locked. * * Returns 0 on success, EDQUOT or other errors otherwise */ STATIC int xfs_trans_reserve_quota_nblks( xfs_trans_t *tp, xfs_mount_t *mp, xfs_inode_t *ip, long nblks, long ninos, uint type) { int error; if (!XFS_IS_QUOTA_ON(mp)) return (0); ASSERT(ip->i_ino != mp->m_sb.sb_uquotino); ASSERT(ip->i_ino != mp->m_sb.sb_gquotino); ASSERT(XFS_ISLOCKED_INODE_EXCL(ip)); ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); ASSERT((type & ~XFS_QMOPT_FORCE_RES) == XFS_TRANS_DQ_RES_RTBLKS || (type & ~XFS_QMOPT_FORCE_RES) == XFS_TRANS_DQ_RES_BLKS); /* * Reserve nblks against these dquots, with trans as the mediator. */ error = xfs_trans_reserve_quota_bydquots(tp, mp, ip->i_udquot, ip->i_gdquot, nblks, ninos, type); return (error); } /* * This routine is called to allocate a quotaoff log item. */ xfs_qoff_logitem_t * xfs_trans_get_qoff_item( xfs_trans_t *tp, xfs_qoff_logitem_t *startqoff, uint flags) { xfs_qoff_logitem_t *q; ASSERT(tp != NULL); q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags); ASSERT(q != NULL); /* * Get a log_item_desc to point at the new item. */ (void) xfs_trans_add_item(tp, (xfs_log_item_t*)q); return (q); } /* * This is called to mark the quotaoff logitem as needing * to be logged when the transaction is committed. The logitem must * already be associated with the given transaction. */ void xfs_trans_log_quotaoff_item( xfs_trans_t *tp, xfs_qoff_logitem_t *qlp) { xfs_log_item_desc_t *lidp; lidp = xfs_trans_find_item(tp, (xfs_log_item_t *)qlp); ASSERT(lidp != NULL); tp->t_flags |= XFS_TRANS_DIRTY; lidp->lid_flags |= XFS_LID_DIRTY; } STATIC void xfs_trans_alloc_dqinfo( xfs_trans_t *tp) { (tp)->t_dqinfo = kmem_zone_zalloc(xfs_Gqm->qm_dqtrxzone, KM_SLEEP); } STATIC void xfs_trans_free_dqinfo( xfs_trans_t *tp) { if (!tp->t_dqinfo) return; kmem_zone_free(xfs_Gqm->qm_dqtrxzone, (tp)->t_dqinfo); (tp)->t_dqinfo = NULL; } xfs_dqtrxops_t xfs_trans_dquot_ops = { .qo_dup_dqinfo = xfs_trans_dup_dqinfo, .qo_free_dqinfo = xfs_trans_free_dqinfo, .qo_mod_dquot_byino = xfs_trans_mod_dquot_byino, .qo_apply_dquot_deltas = xfs_trans_apply_dquot_deltas, .qo_reserve_quota_nblks = xfs_trans_reserve_quota_nblks, .qo_reserve_quota_bydquots = xfs_trans_reserve_quota_bydquots, .qo_unreserve_and_mod_dquots = xfs_trans_unreserve_and_mod_dquots, };