2 * Definitions for diskquota-operations. When diskquota is configured these
3 * macros expand to the right source-code.
5 * Author: Marco van Wieringen <mvw@planets.elm.net>
7 * Version: $Id: quotaops.h,v 1.2 1998/01/15 16:22:26 ecd Exp $
10 #ifndef _LINUX_QUOTAOPS_
11 #define _LINUX_QUOTAOPS_
13 #include <linux/config.h>
14 #include <linux/smp_lock.h>
18 #if defined(CONFIG_QUOTA)
21 * declaration of quota_function calls in kernel.
23 extern void sync_dquots(struct super_block *sb, int type);
25 extern int dquot_initialize(struct inode *inode, int type);
26 extern int dquot_drop(struct inode *inode);
28 extern int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc);
29 extern int dquot_alloc_inode(const struct inode *inode, unsigned long number);
31 extern int dquot_free_space(struct inode *inode, qsize_t number);
32 extern int dquot_free_inode(const struct inode *inode, unsigned long number);
34 extern int dquot_transfer(struct inode *inode, struct iattr *iattr);
35 extern int dquot_commit(struct dquot *dquot);
36 extern int dquot_acquire(struct dquot *dquot);
37 extern int dquot_release(struct dquot *dquot);
38 extern int dquot_commit_info(struct super_block *sb, int type);
39 extern int dquot_mark_dquot_dirty(struct dquot *dquot);
41 extern int vfs_quota_on(struct super_block *sb, int type, int format_id, char *path);
42 extern int vfs_quota_on_mount(int type, int format_id, struct dentry *dentry);
43 extern int vfs_quota_off(struct super_block *sb, int type);
44 #define vfs_quota_off_mount(sb, type) vfs_quota_off(sb, type)
45 extern int vfs_quota_sync(struct super_block *sb, int type);
46 extern int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
47 extern int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
48 extern int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);
49 extern int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);
52 * Operations supported for diskquotas.
54 extern struct dquot_operations dquot_operations;
55 extern struct quotactl_ops vfs_quotactl_ops;
57 #define sb_dquot_ops (&dquot_operations)
58 #define sb_quotactl_ops (&vfs_quotactl_ops)
60 /* It is better to call this function outside of any transaction as it might
61 * need a lot of space in journal for dquot structure allocation. */
62 static __inline__ void DQUOT_INIT(struct inode *inode)
65 if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode))
66 inode->i_sb->dq_op->initialize(inode, -1);
69 /* The same as with DQUOT_INIT */
70 static __inline__ void DQUOT_DROP(struct inode *inode)
72 if (IS_QUOTAINIT(inode)) {
74 inode->i_sb->dq_op->drop(inode); /* Ops must be set when there's any quota... */
78 /* The following allocation/freeing/transfer functions *must* be called inside
79 * a transaction (deadlocks possible otherwise) */
80 static __inline__ int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
82 if (sb_any_quota_enabled(inode->i_sb)) {
83 /* Used space is updated in alloc_space() */
84 if (inode->i_sb->dq_op->alloc_space(inode, nr, 1) == NO_QUOTA)
88 inode_add_bytes(inode, nr);
92 static __inline__ int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
95 if (!(ret = DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr)))
96 mark_inode_dirty(inode);
100 static __inline__ int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
102 if (sb_any_quota_enabled(inode->i_sb)) {
103 /* Used space is updated in alloc_space() */
104 if (inode->i_sb->dq_op->alloc_space(inode, nr, 0) == NO_QUOTA)
108 inode_add_bytes(inode, nr);
112 static __inline__ int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
115 if (!(ret = DQUOT_ALLOC_SPACE_NODIRTY(inode, nr)))
116 mark_inode_dirty(inode);
120 static __inline__ int DQUOT_ALLOC_INODE(struct inode *inode)
122 if (sb_any_quota_enabled(inode->i_sb)) {
124 if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)
130 static __inline__ void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
132 if (sb_any_quota_enabled(inode->i_sb))
133 inode->i_sb->dq_op->free_space(inode, nr);
135 inode_sub_bytes(inode, nr);
138 static __inline__ void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
140 DQUOT_FREE_SPACE_NODIRTY(inode, nr);
141 mark_inode_dirty(inode);
144 static __inline__ void DQUOT_FREE_INODE(struct inode *inode)
146 if (sb_any_quota_enabled(inode->i_sb))
147 inode->i_sb->dq_op->free_inode(inode, 1);
150 static __inline__ int DQUOT_TRANSFER(struct inode *inode, struct iattr *iattr)
152 if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode)) {
154 if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA)
160 /* The following two functions cannot be called inside a transaction */
161 #define DQUOT_SYNC(sb) sync_dquots(sb, -1)
163 static __inline__ int DQUOT_OFF(struct super_block *sb)
167 if (sb->s_qcop && sb->s_qcop->quota_off)
168 ret = sb->s_qcop->quota_off(sb, -1);
175 * NO-OP when quota not configured.
177 #define sb_dquot_ops (NULL)
178 #define sb_quotactl_ops (NULL)
179 #define sync_dquots_dev(dev,type) (NULL)
180 #define DQUOT_INIT(inode) do { } while(0)
181 #define DQUOT_DROP(inode) do { } while(0)
182 #define DQUOT_ALLOC_INODE(inode) (0)
183 #define DQUOT_FREE_INODE(inode) do { } while(0)
184 #define DQUOT_SYNC(sb) do { } while(0)
185 #define DQUOT_OFF(sb) do { } while(0)
186 #define DQUOT_TRANSFER(inode, iattr) (0)
187 extern __inline__ int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
189 inode_add_bytes(inode, nr);
193 extern __inline__ int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
195 DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr);
196 mark_inode_dirty(inode);
200 extern __inline__ int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
202 inode_add_bytes(inode, nr);
206 extern __inline__ int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
208 DQUOT_ALLOC_SPACE_NODIRTY(inode, nr);
209 mark_inode_dirty(inode);
213 extern __inline__ void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
215 inode_sub_bytes(inode, nr);
218 extern __inline__ void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
220 DQUOT_FREE_SPACE_NODIRTY(inode, nr);
221 mark_inode_dirty(inode);
224 #endif /* CONFIG_QUOTA */
226 #define DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr) DQUOT_PREALLOC_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
227 #define DQUOT_PREALLOC_BLOCK(inode, nr) DQUOT_PREALLOC_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
228 #define DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr) DQUOT_ALLOC_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
229 #define DQUOT_ALLOC_BLOCK(inode, nr) DQUOT_ALLOC_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
230 #define DQUOT_FREE_BLOCK_NODIRTY(inode, nr) DQUOT_FREE_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
231 #define DQUOT_FREE_BLOCK(inode, nr) DQUOT_FREE_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
233 #endif /* _LINUX_QUOTAOPS_ */