2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
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15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
32 #ifndef __XFS_QUOTA_H__
33 #define __XFS_QUOTA_H__
36 * uid_t and gid_t are hard-coded to 32 bits in the inode.
37 * Hence, an 'id' in a dquot is 32 bits..
39 typedef __int32_t xfs_dqid_t
;
42 * Eventhough users may not have quota limits occupying all 64-bits,
43 * they may need 64-bit accounting. Hence, 64-bit quota-counters,
44 * and quota-limits. This is a waste in the common case, but hey ...
46 typedef __uint64_t xfs_qcnt_t
;
47 typedef __uint16_t xfs_qwarncnt_t
;
50 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
52 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */
53 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */
54 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */
55 #define XFS_PQUOTA_ACCT 0x0008 /* (IRIX) project quota accounting ON */
56 #define XFS_GQUOTA_ENFD 0x0010 /* group quota limits enforced */
57 #define XFS_GQUOTA_CHKD 0x0020 /* quotacheck run on grp quotas */
58 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */
61 * Incore only flags for quotaoff - these bits get cleared when quota(s)
62 * are in the process of getting turned off. These flags are in m_qflags but
65 #define XFS_UQUOTA_ACTIVE 0x0080 /* uquotas are being turned off */
66 #define XFS_GQUOTA_ACTIVE 0x0100 /* gquotas are being turned off */
69 * Typically, we turn quotas off if we weren't explicitly asked to
70 * mount quotas. This is the mount option not to do that.
71 * This option is handy in the miniroot, when trying to mount /root.
72 * We can't really know what's in /etc/fstab until /root is already mounted!
73 * This stops quotas getting turned off in the root filesystem everytime
74 * the system boots up a miniroot.
76 #define XFS_QUOTA_MAYBE 0x0200 /* Turn quotas on if SB has quotas on */
79 * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees
80 * quota will be not be switched off as long as that inode lock is held.
82 #define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \
84 #define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE)
85 #define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE)
88 * Flags to tell various functions what to do. Not all of these are meaningful
89 * to a single function. None of these XFS_QMOPT_* flags are meant to have
90 * persistent values (ie. their values can and will change between versions)
92 #define XFS_QMOPT_DQLOCK 0x0000001 /* dqlock */
93 #define XFS_QMOPT_DQALLOC 0x0000002 /* alloc dquot ondisk if needed */
94 #define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */
95 #define XFS_QMOPT_GQUOTA 0x0000008 /* group dquot requested */
96 #define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */
97 #define XFS_QMOPT_DQSUSER 0x0000020 /* don't cache super users dquot */
98 #define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */
99 #define XFS_QMOPT_QUOTAOFF 0x0000080 /* quotas are being turned off */
100 #define XFS_QMOPT_UMOUNTING 0x0000100 /* filesys is being unmounted */
101 #define XFS_QMOPT_DOLOG 0x0000200 /* log buf changes (in quotacheck) */
102 #define XFS_QMOPT_DOWARN 0x0000400 /* increase warning cnt if necessary */
103 #define XFS_QMOPT_ILOCKED 0x0000800 /* inode is already locked (excl) */
104 #define XFS_QMOPT_DQREPAIR 0x0001000 /* repair dquot, if damaged. */
107 * flags to xfs_trans_mod_dquot to indicate which field needs to be
110 #define XFS_QMOPT_RES_REGBLKS 0x0010000
111 #define XFS_QMOPT_RES_RTBLKS 0x0020000
112 #define XFS_QMOPT_BCOUNT 0x0040000
113 #define XFS_QMOPT_ICOUNT 0x0080000
114 #define XFS_QMOPT_RTBCOUNT 0x0100000
115 #define XFS_QMOPT_DELBCOUNT 0x0200000
116 #define XFS_QMOPT_DELRTBCOUNT 0x0400000
117 #define XFS_QMOPT_RES_INOS 0x0800000
120 * flags for dqflush and dqflush_all.
122 #define XFS_QMOPT_SYNC 0x1000000
123 #define XFS_QMOPT_ASYNC 0x2000000
124 #define XFS_QMOPT_DELWRI 0x4000000
129 #define XFS_QMOPT_INHERIT 0x8000000
132 * flags to xfs_trans_mod_dquot.
134 #define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS
135 #define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS
136 #define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS
137 #define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT
138 #define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT
139 #define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT
140 #define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT
141 #define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT
144 #define XFS_QMOPT_QUOTALL (XFS_QMOPT_UQUOTA|XFS_QMOPT_GQUOTA)
145 #define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)
148 * This check is done typically without holding the inode lock;
149 * that may seem racey, but it is harmless in the context that it is used.
150 * The inode cannot go inactive as long a reference is kept, and
151 * therefore if dquot(s) were attached, they'll stay consistent.
152 * If, for example, the ownership of the inode changes while
153 * we didnt have the inode locked, the appropriate dquot(s) will be
154 * attached atomically.
156 #define XFS_NOT_DQATTACHED(mp, ip) ((XFS_IS_UQUOTA_ON(mp) &&\
157 (ip)->i_udquot == NULL) || \
158 (XFS_IS_GQUOTA_ON(mp) && \
159 (ip)->i_gdquot == NULL))
161 #define XFS_QM_NEED_QUOTACHECK(mp) ((XFS_IS_UQUOTA_ON(mp) && \
162 (mp->m_sb.sb_qflags & \
163 XFS_UQUOTA_CHKD) == 0) || \
164 (XFS_IS_GQUOTA_ON(mp) && \
165 (mp->m_sb.sb_qflags & \
166 XFS_GQUOTA_CHKD) == 0))
168 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
169 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
170 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD)
171 #define XFS_MOUNT_QUOTA_MASK (XFS_MOUNT_QUOTA_ALL | XFS_UQUOTA_ACTIVE | \
174 #define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME)
179 * External Interface to the XFS disk quota subsystem.
183 struct xfs_disk_dquot
;
191 * Quota Manager Interface.
193 extern struct xfs_qm
*xfs_qm_init(void);
194 extern void xfs_qm_destroy(struct xfs_qm
*);
195 extern int xfs_qm_dqflush_all(struct xfs_mount
*, int);
196 extern int xfs_qm_dqattach(struct xfs_inode
*, uint
);
197 extern int xfs_qm_dqpurge_all(struct xfs_mount
*, uint
);
198 extern void xfs_qm_mount_quotainit(struct xfs_mount
*, uint
);
199 extern void xfs_qm_unmount_quotadestroy(struct xfs_mount
*);
200 extern int xfs_qm_mount_quotas(struct xfs_mount
*);
201 extern int xfs_qm_unmount_quotas(struct xfs_mount
*);
202 extern void xfs_qm_dqdettach_inode(struct xfs_inode
*);
203 extern int xfs_qm_sync(struct xfs_mount
*, short);
207 * system call interface
209 extern int xfs_quotactl(xfs_mount_t
*, struct vfs
*, int, int,
215 extern void xfs_dqlock(struct xfs_dquot
*);
216 extern void xfs_dqunlock(struct xfs_dquot
*);
217 extern void xfs_dqunlock_nonotify(struct xfs_dquot
*);
218 extern void xfs_dqlock2(struct xfs_dquot
*, struct xfs_dquot
*);
219 extern void xfs_qm_dqput(struct xfs_dquot
*);
220 extern void xfs_qm_dqrele(struct xfs_dquot
*);
221 extern xfs_dqid_t
xfs_qm_dqid(struct xfs_dquot
*);
222 extern int xfs_qm_dqget(struct xfs_mount
*,
223 struct xfs_inode
*, xfs_dqid_t
,
224 uint
, uint
, struct xfs_dquot
**);
225 extern int xfs_qm_dqcheck(struct xfs_disk_dquot
*,
226 xfs_dqid_t
, uint
, uint
, char *);
229 * Vnodeops specific code that should actually be _in_ xfs_vnodeops.c, but
230 * is here because it's nicer to keep vnodeops (therefore, XFS) lean
233 extern struct xfs_dquot
* xfs_qm_vop_chown(struct xfs_trans
*,
237 extern int xfs_qm_vop_dqalloc(struct xfs_mount
*,
241 struct xfs_dquot
**);
243 extern int xfs_qm_vop_chown_dqalloc(struct xfs_mount
*,
247 struct xfs_dquot
**);
249 extern int xfs_qm_vop_chown_reserve(struct xfs_trans
*,
255 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode
**);
256 extern void xfs_qm_vop_dqattach_and_dqmod_newinode(
264 * Dquot Transaction interface
266 extern void xfs_trans_alloc_dqinfo(struct xfs_trans
*);
267 extern void xfs_trans_free_dqinfo(struct xfs_trans
*);
268 extern void xfs_trans_dup_dqinfo(struct xfs_trans
*,
270 extern void xfs_trans_mod_dquot(struct xfs_trans
*,
273 extern int xfs_trans_mod_dquot_byino(struct xfs_trans
*,
276 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans
*);
277 extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans
*);
279 extern int xfs_trans_reserve_quota_nblks(struct xfs_trans
*,
284 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans
*,
288 extern void xfs_trans_log_dquot(struct xfs_trans
*,
290 extern void xfs_trans_dqjoin(struct xfs_trans
*,
292 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount
*, uint
);
295 * Regular disk block quota reservations
297 #define xfs_trans_reserve_blkquota(tp, ip, nblks) \
298 xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, XFS_QMOPT_RES_REGBLKS)
300 #define xfs_trans_reserve_blkquota_force(tp, ip, nblks) \
301 xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, \
302 XFS_QMOPT_RES_REGBLKS|XFS_QMOPT_FORCE_RES)
304 #define xfs_trans_unreserve_blkquota(tp, ip, nblks) \
305 xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), 0, XFS_QMOPT_RES_REGBLKS)
307 #define xfs_trans_reserve_quota(tp, udq, gdq, nb, ni, f) \
308 xfs_trans_reserve_quota_bydquots(tp, udq, gdq, nb, ni, f|XFS_QMOPT_RES_REGBLKS)
310 #define xfs_trans_unreserve_quota(tp, ud, gd, b, i, f) \
311 xfs_trans_reserve_quota_bydquots(tp, ud, gd, -(b), -(i), f|XFS_QMOPT_RES_REGBLKS)
314 * Realtime disk block quota reservations
316 #define xfs_trans_reserve_rtblkquota(mp, tp, ip, nblks) \
317 xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, XFS_QMOPT_RES_RTBLKS)
319 #define xfs_trans_unreserve_rtblkquota(tp, ip, nblks) \
320 xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), 0, XFS_QMOPT_RES_RTBLKS)
322 #define xfs_trans_reserve_rtquota(mp, tp, uq, pq, blks, f) \
323 xfs_trans_reserve_quota_bydquots(mp, tp, uq, pq, blks, 0, f|XFS_QMOPT_RES_RTBLKS)
325 #define xfs_trans_unreserve_rtquota(tp, uq, pq, blks) \
326 xfs_trans_reserve_quota_bydquots(tp, uq, pq, -(blks), XFS_QMOPT_RES_RTBLKS)
328 #endif /* __KERNEL__ */
330 #endif /* __XFS_QUOTA_H__ */