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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#include "xfs.h"
Nathan Scotta844f452005-11-02 14:38:42 +110019#include "xfs_fs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include "xfs_types.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include "xfs_log.h"
Nathan Scotta844f452005-11-02 14:38:42 +110022#include "xfs_inum.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include "xfs_trans.h"
24#include "xfs_sb.h"
25#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include "xfs_dir2.h"
27#include "xfs_dmapi.h"
28#include "xfs_mount.h"
Tim Shimmin4cd4a032005-09-05 08:24:10 +100029#include "xfs_quota.h"
30#include "xfs_error.h"
Christoph Hellwigb09cc772007-08-30 17:19:57 +100031
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
33STATIC struct xfs_dquot *
34xfs_dqvopchown_default(
35 struct xfs_trans *tp,
36 struct xfs_inode *ip,
37 struct xfs_dquot **dqp,
38 struct xfs_dquot *dq)
39{
40 return NULL;
41}
42
Tim Shimmin4cd4a032005-09-05 08:24:10 +100043/*
44 * Clear the quotaflags in memory and in the superblock.
45 */
46int
47xfs_mount_reset_sbqflags(xfs_mount_t *mp)
48{
49 int error;
50 xfs_trans_t *tp;
Tim Shimmin4cd4a032005-09-05 08:24:10 +100051
52 mp->m_qflags = 0;
53 /*
54 * It is OK to look at sb_qflags here in mount path,
Eric Sandeen3685c2a2007-10-11 17:42:32 +100055 * without m_sb_lock.
Tim Shimmin4cd4a032005-09-05 08:24:10 +100056 */
57 if (mp->m_sb.sb_qflags == 0)
58 return 0;
Eric Sandeen3685c2a2007-10-11 17:42:32 +100059 spin_lock(&mp->m_sb_lock);
Tim Shimmin4cd4a032005-09-05 08:24:10 +100060 mp->m_sb.sb_qflags = 0;
Eric Sandeen3685c2a2007-10-11 17:42:32 +100061 spin_unlock(&mp->m_sb_lock);
Tim Shimmin4cd4a032005-09-05 08:24:10 +100062
63 /*
64 * if the fs is readonly, let the incore superblock run
65 * with quotas off but don't flush the update out to disk
66 */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +100067 if (mp->m_flags & XFS_MOUNT_RDONLY)
Tim Shimmin4cd4a032005-09-05 08:24:10 +100068 return 0;
69#ifdef QUOTADEBUG
70 xfs_fs_cmn_err(CE_NOTE, mp, "Writing superblock quota changes");
71#endif
72 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE);
73 if ((error = xfs_trans_reserve(tp, 0, mp->m_sb.sb_sectsize + 128, 0, 0,
74 XFS_DEFAULT_LOG_COUNT))) {
75 xfs_trans_cancel(tp, 0);
76 xfs_fs_cmn_err(CE_ALERT, mp,
77 "xfs_mount_reset_sbqflags: Superblock update failed!");
78 return error;
79 }
80 xfs_mod_sb(tp, XFS_SB_QFLAGS);
Eric Sandeen1c72bf92007-05-08 13:48:42 +100081 error = xfs_trans_commit(tp, 0);
Tim Shimmin4cd4a032005-09-05 08:24:10 +100082 return error;
83}
84
85STATIC int
86xfs_noquota_init(
87 xfs_mount_t *mp,
88 uint *needquotamount,
89 uint *quotaflags)
90{
91 int error = 0;
92
93 *quotaflags = 0;
94 *needquotamount = B_FALSE;
95
96 ASSERT(!XFS_IS_QUOTA_ON(mp));
97
98 /*
99 * If a file system had quotas running earlier, but decided to
100 * mount without -o uquota/pquota/gquota options, revoke the
101 * quotachecked license.
102 */
103 if (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT) {
104 cmn_err(CE_NOTE,
105 "XFS resetting qflags for filesystem %s",
106 mp->m_fsname);
107
108 error = xfs_mount_reset_sbqflags(mp);
109 }
110 return error;
111}
112
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000113static struct xfs_qmops xfs_qmcore_stub = {
Tim Shimmin4cd4a032005-09-05 08:24:10 +1000114 .xfs_qminit = (xfs_qminit_t) xfs_noquota_init,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 .xfs_qmdone = (xfs_qmdone_t) fs_noerr,
116 .xfs_qmmount = (xfs_qmmount_t) fs_noerr,
117 .xfs_qmunmount = (xfs_qmunmount_t) fs_noerr,
118 .xfs_dqrele = (xfs_dqrele_t) fs_noerr,
119 .xfs_dqattach = (xfs_dqattach_t) fs_noerr,
120 .xfs_dqdetach = (xfs_dqdetach_t) fs_noerr,
121 .xfs_dqpurgeall = (xfs_dqpurgeall_t) fs_noerr,
122 .xfs_dqvopalloc = (xfs_dqvopalloc_t) fs_noerr,
123 .xfs_dqvopcreate = (xfs_dqvopcreate_t) fs_noerr,
124 .xfs_dqvoprename = (xfs_dqvoprename_t) fs_noerr,
125 .xfs_dqvopchown = xfs_dqvopchown_default,
126 .xfs_dqvopchownresv = (xfs_dqvopchownresv_t) fs_noerr,
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000127 .xfs_dqstatvfs = (xfs_dqstatvfs_t) fs_noval,
128 .xfs_dqsync = (xfs_dqsync_t) fs_noerr,
129 .xfs_quotactl = (xfs_quotactl_t) fs_nosys,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130};
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000131
132int
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100133xfs_qmops_get(struct xfs_mount *mp)
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000134{
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100135 if (XFS_IS_QUOTA_RUNNING(mp)) {
Christoph Hellwigc8fcfac2007-10-19 16:57:01 +1000136#ifdef CONFIG_XFS_QUOTA
137 mp->m_qm_ops = &xfs_qmcore_xfs;
138#else
139 cmn_err(CE_WARN,
140 "XFS: qouta support not available in this kernel.");
141 return EINVAL;
142#endif
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000143 } else {
144 mp->m_qm_ops = &xfs_qmcore_stub;
145 }
146
147 return 0;
148}
149
150void
151xfs_qmops_put(struct xfs_mount *mp)
152{
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000153}