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 1.1.1.1 2005/04/11 02:51:03 jack Exp $
10 #ifndef _LINUX_QUOTAOPS_
11 #define _LINUX_QUOTAOPS_
13 #include <linux/config.h>
14 #include <linux/smp_lock.h>
16 #if defined(CONFIG_QUOTA)
21 * declaration of quota_function calls in kernel.
23 extern void dquot_initialize(struct inode *inode, short type);
24 extern void dquot_drop(struct inode *inode);
25 extern int quota_off(struct super_block *sb, short type);
26 extern int sync_dquots(kdev_t dev, short type);
28 extern int dquot_alloc_block(struct inode *inode, unsigned long number, char prealloc);
29 extern int dquot_alloc_inode(const struct inode *inode, unsigned long number);
31 extern void dquot_free_block(struct inode *inode, unsigned long number);
32 extern void dquot_free_inode(const struct inode *inode, unsigned long number);
34 extern int dquot_transfer(struct inode *inode, struct iattr *iattr);
37 * Operations supported for diskquotas.
39 #define sb_any_quota_enabled(sb) ((sb)->s_dquot.flags & (DQUOT_USR_ENABLED | DQUOT_GRP_ENABLED))
41 static __inline__ void DQUOT_INIT(struct inode *inode)
46 if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode))
47 inode->i_sb->dq_op->initialize(inode, -1);
51 static __inline__ void DQUOT_DROP(struct inode *inode)
54 if (IS_QUOTAINIT(inode)) {
57 inode->i_sb->dq_op->drop(inode); /* Ops must be set when there's any quota... */
62 static __inline__ int DQUOT_PREALLOC_BLOCK_NODIRTY(struct inode *inode, int nr)
65 if (sb_any_quota_enabled(inode->i_sb)) {
66 /* Number of used blocks is updated in alloc_block() */
67 if (inode->i_sb->dq_op->alloc_block(inode, fs_to_dq_blocks(nr, inode->i_sb->s_blocksize), 1) == NO_QUOTA) {
73 inode->i_blocks += nr << (inode->i_sb->s_blocksize_bits - 9);
78 static __inline__ int DQUOT_PREALLOC_BLOCK(struct inode *inode, int nr)
81 if (!(ret = DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr)))
82 mark_inode_dirty(inode);
86 static __inline__ int DQUOT_ALLOC_BLOCK_NODIRTY(struct inode *inode, int nr)
89 if (sb_any_quota_enabled(inode->i_sb)) {
90 /* Number of used blocks is updated in alloc_block() */
91 if (inode->i_sb->dq_op->alloc_block(inode, fs_to_dq_blocks(nr, inode->i_sb->s_blocksize), 0) == NO_QUOTA) {
97 inode->i_blocks += nr << (inode->i_sb->s_blocksize_bits - 9);
102 static __inline__ int DQUOT_ALLOC_BLOCK(struct inode *inode, int nr)
105 if (!(ret = DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr)))
106 mark_inode_dirty(inode);
110 static __inline__ int DQUOT_ALLOC_INODE(struct inode *inode)
113 if (sb_any_quota_enabled(inode->i_sb)) {
115 if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
124 static __inline__ void DQUOT_FREE_BLOCK_NODIRTY(struct inode *inode, int nr)
127 if (sb_any_quota_enabled(inode->i_sb))
128 inode->i_sb->dq_op->free_block(inode, fs_to_dq_blocks(nr, inode->i_sb->s_blocksize));
130 inode->i_blocks -= nr << (inode->i_sb->s_blocksize_bits - 9);
134 static __inline__ void DQUOT_FREE_BLOCK(struct inode *inode, int nr)
136 DQUOT_FREE_BLOCK_NODIRTY(inode, nr);
137 mark_inode_dirty(inode);
140 static __inline__ void DQUOT_FREE_INODE(struct inode *inode)
143 if (sb_any_quota_enabled(inode->i_sb))
144 inode->i_sb->dq_op->free_inode(inode, 1);
148 static __inline__ int DQUOT_TRANSFER(struct inode *inode, struct iattr *iattr)
151 if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode)) {
153 if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA) {
162 #define DQUOT_SYNC(dev) sync_dquots(dev, -1)
163 #define DQUOT_OFF(sb) quota_off(sb, -1)
168 * NO-OP when quota not configured.
170 #define DQUOT_INIT(inode) do { } while(0)
171 #define DQUOT_DROP(inode) do { } while(0)
172 #define DQUOT_ALLOC_INODE(inode) (0)
173 #define DQUOT_FREE_INODE(inode) do { } while(0)
174 #define DQUOT_SYNC(dev) do { } while(0)
175 #define DQUOT_OFF(sb) do { } while(0)
176 #define DQUOT_TRANSFER(inode, iattr) (0)
177 extern __inline__ int DQUOT_PREALLOC_BLOCK_NODIRTY(struct inode *inode, int nr)
180 inode->i_blocks += nr << (inode->i_sb->s_blocksize_bits - 9);
185 extern __inline__ int DQUOT_PREALLOC_BLOCK(struct inode *inode, int nr)
187 DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr);
188 mark_inode_dirty(inode);
192 extern __inline__ int DQUOT_ALLOC_BLOCK_NODIRTY(struct inode *inode, int nr)
195 inode->i_blocks += nr << (inode->i_sb->s_blocksize_bits - 9);
200 extern __inline__ int DQUOT_ALLOC_BLOCK(struct inode *inode, int nr)
202 DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr);
203 mark_inode_dirty(inode);
207 extern __inline__ void DQUOT_FREE_BLOCK_NODIRTY(struct inode *inode, int nr)
210 inode->i_blocks -= nr << (inode->i_sb->s_blocksize_bits - 9);
214 extern __inline__ void DQUOT_FREE_BLOCK(struct inode *inode, int nr)
216 DQUOT_FREE_BLOCK_NODIRTY(inode, nr);
217 mark_inode_dirty(inode);
220 #endif /* CONFIG_QUOTA */
221 #endif /* _LINUX_QUOTAOPS_ */