1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
12 #include "xfs_mount.h"
13 #include "xfs_quota.h"
14 #include "xfs_inode.h"
15 #include "xfs_trans.h"
20 xfs_fill_statvfs_from_dquot(
21 struct kstatfs *statp,
23 struct xfs_dquot *dqp)
25 struct xfs_dquot_res *blkres = &dqp->q_blk;
28 if (XFS_IS_REALTIME_MOUNT(ip->i_mount) &&
29 (ip->i_diflags & (XFS_DIFLAG_RTINHERIT | XFS_DIFLAG_REALTIME)))
32 limit = blkres->softlimit ?
35 if (limit && statp->f_blocks > limit) {
36 statp->f_blocks = limit;
37 statp->f_bfree = statp->f_bavail =
38 (statp->f_blocks > blkres->reserved) ?
39 (statp->f_blocks - blkres->reserved) : 0;
42 limit = dqp->q_ino.softlimit ?
43 dqp->q_ino.softlimit :
45 if (limit && statp->f_files > limit) {
46 statp->f_files = limit;
48 (statp->f_files > dqp->q_ino.reserved) ?
49 (statp->f_files - dqp->q_ino.reserved) : 0;
55 * Directory tree accounting is implemented using project quotas, where
56 * the project identifier is inherited from parent directories.
57 * A statvfs (df, etc.) of a directory that is using project quota should
58 * return a statvfs of the project, not the entire filesystem.
59 * This makes such trees appear as if they are filesystems in themselves.
64 struct kstatfs *statp)
66 struct xfs_mount *mp = ip->i_mount;
67 struct xfs_dquot *dqp;
69 if (!xfs_qm_dqget(mp, ip->i_projid, XFS_DQTYPE_PROJ, false, &dqp)) {
70 xfs_fill_statvfs_from_dquot(statp, ip, dqp);
82 uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0;
84 quotaondisk = xfs_has_quota(mp) &&
85 (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT);
88 uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT;
89 pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT;
90 gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT;
94 * If the device itself is read-only, we can't allow
95 * the user to change the state of quota on the mount -
96 * this would generate a transaction on the ro device,
97 * which would lead to an I/O error and shutdown
100 if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) ||
101 (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) ||
102 (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) ||
103 (!gquotaondisk && XFS_IS_GQUOTA_ON(mp)) ||
104 (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) ||
105 (!pquotaondisk && XFS_IS_PQUOTA_ON(mp))) &&
106 xfs_dev_is_read_only(mp, "changing quota state")) {
107 xfs_warn(mp, "please mount with%s%s%s%s.",
108 (!quotaondisk ? "out quota" : ""),
109 (uquotaondisk ? " usrquota" : ""),
110 (gquotaondisk ? " grpquota" : ""),
111 (pquotaondisk ? " prjquota" : ""));
115 if (XFS_IS_QUOTA_ON(mp) || quotaondisk) {
117 * Call mount_quotas at this point only if we won't have to do
120 if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) {
122 * If an error occurred, qm_mount_quotas code
123 * has already disabled quotas. So, just finish
124 * mounting, and get on with the boring life
125 * without disk quotas.
127 xfs_qm_mount_quotas(mp);
130 * Clear the quota flags, but remember them. This
131 * is so that the quota code doesn't get invoked
132 * before we're ready. This can happen when an
133 * inode goes inactive and wants to free blocks,
134 * or via xfs_log_mount_finish.
136 *needquotamount = true;
137 *quotaflags = mp->m_qflags;
146 * If the sysadmin didn't provide any quota mount options, restore the quota
147 * accounting and enforcement state from the ondisk superblock. Only do this
148 * for metadir filesystems because this is a behavior change.
151 xfs_qm_resume_quotaon(
152 struct xfs_mount *mp)
154 if (!xfs_has_metadir(mp))
156 if (xfs_has_norecovery(mp))
159 mp->m_qflags = mp->m_sb.sb_qflags & (XFS_ALL_QUOTA_ACCT |