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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [quotaops.h] - Blame information for rev 81

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/*
 * Definitions for diskquota-operations. When diskquota is configured these
 * macros expand to the right source-code.
 *
 * Author:  Marco van Wieringen <mvw@planets.elm.net>
 *
 * Version: $Id: quotaops.h,v 1.2 1998/01/15 16:22:26 ecd Exp $
 *
 */
#ifndef _LINUX_QUOTAOPS_
#define _LINUX_QUOTAOPS_
 
#include <linux/smp_lock.h>
 
#include <linux/fs.h>
 
#if defined(CONFIG_QUOTA)
 
/*
 * declaration of quota_function calls in kernel.
 */
extern void sync_dquots(struct super_block *sb, int type);
 
extern int dquot_initialize(struct inode *inode, int type);
extern int dquot_drop(struct inode *inode);
 
extern int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc);
extern int dquot_alloc_inode(const struct inode *inode, unsigned long number);
 
extern int dquot_free_space(struct inode *inode, qsize_t number);
extern int dquot_free_inode(const struct inode *inode, unsigned long number);
 
extern int dquot_transfer(struct inode *inode, struct iattr *iattr);
extern int dquot_commit(struct dquot *dquot);
extern int dquot_acquire(struct dquot *dquot);
extern int dquot_release(struct dquot *dquot);
extern int dquot_commit_info(struct super_block *sb, int type);
extern int dquot_mark_dquot_dirty(struct dquot *dquot);
 
extern int vfs_quota_on(struct super_block *sb, int type, int format_id, char *path);
extern int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
                int format_id, int type);
extern int vfs_quota_off(struct super_block *sb, int type);
#define vfs_quota_off_mount(sb, type) vfs_quota_off(sb, type)
extern int vfs_quota_sync(struct super_block *sb, int type);
extern int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
extern int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
extern int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);
extern int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);
 
/*
 * Operations supported for diskquotas.
 */
extern struct dquot_operations dquot_operations;
extern struct quotactl_ops vfs_quotactl_ops;
 
#define sb_dquot_ops (&dquot_operations)
#define sb_quotactl_ops (&vfs_quotactl_ops)
 
/* It is better to call this function outside of any transaction as it might
 * need a lot of space in journal for dquot structure allocation. */
static __inline__ void DQUOT_INIT(struct inode *inode)
{
        BUG_ON(!inode->i_sb);
        if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode))
                inode->i_sb->dq_op->initialize(inode, -1);
}
 
/* The same as with DQUOT_INIT */
static __inline__ void DQUOT_DROP(struct inode *inode)
{
        /* Here we can get arbitrary inode from clear_inode() so we have
         * to be careful. OTOH we don't need locking as quota operations
         * are allowed to change only at mount time */
        if (!IS_NOQUOTA(inode) && inode->i_sb && inode->i_sb->dq_op
            && inode->i_sb->dq_op->drop) {
                int cnt;
                /* Test before calling to rule out calls from proc and such
                 * where we are not allowed to block. Note that this is
                 * actually reliable test even without the lock - the caller
                 * must assure that nobody can come after the DQUOT_DROP and
                 * add quota pointers back anyway */
                for (cnt = 0; cnt < MAXQUOTAS; cnt++)
                        if (inode->i_dquot[cnt] != NODQUOT)
                                break;
                if (cnt < MAXQUOTAS)
                        inode->i_sb->dq_op->drop(inode);
        }
}
 
/* The following allocation/freeing/transfer functions *must* be called inside
 * a transaction (deadlocks possible otherwise) */
static __inline__ int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
        if (sb_any_quota_enabled(inode->i_sb)) {
                /* Used space is updated in alloc_space() */
                if (inode->i_sb->dq_op->alloc_space(inode, nr, 1) == NO_QUOTA)
                        return 1;
        }
        else
                inode_add_bytes(inode, nr);
        return 0;
}
 
static __inline__ int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
{
        int ret;
        if (!(ret =  DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr)))
                mark_inode_dirty(inode);
        return ret;
}
 
static __inline__ int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
        if (sb_any_quota_enabled(inode->i_sb)) {
                /* Used space is updated in alloc_space() */
                if (inode->i_sb->dq_op->alloc_space(inode, nr, 0) == NO_QUOTA)
                        return 1;
        }
        else
                inode_add_bytes(inode, nr);
        return 0;
}
 
static __inline__ int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
{
        int ret;
        if (!(ret = DQUOT_ALLOC_SPACE_NODIRTY(inode, nr)))
                mark_inode_dirty(inode);
        return ret;
}
 
static __inline__ int DQUOT_ALLOC_INODE(struct inode *inode)
{
        if (sb_any_quota_enabled(inode->i_sb)) {
                DQUOT_INIT(inode);
                if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)
                        return 1;
        }
        return 0;
}
 
static __inline__ void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
        if (sb_any_quota_enabled(inode->i_sb))
                inode->i_sb->dq_op->free_space(inode, nr);
        else
                inode_sub_bytes(inode, nr);
}
 
static __inline__ void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
{
        DQUOT_FREE_SPACE_NODIRTY(inode, nr);
        mark_inode_dirty(inode);
}
 
static __inline__ void DQUOT_FREE_INODE(struct inode *inode)
{
        if (sb_any_quota_enabled(inode->i_sb))
                inode->i_sb->dq_op->free_inode(inode, 1);
}
 
static __inline__ int DQUOT_TRANSFER(struct inode *inode, struct iattr *iattr)
{
        if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode)) {
                DQUOT_INIT(inode);
                if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA)
                        return 1;
        }
        return 0;
}
 
/* The following two functions cannot be called inside a transaction */
#define DQUOT_SYNC(sb)  sync_dquots(sb, -1)
 
static __inline__ int DQUOT_OFF(struct super_block *sb)
{
        int ret = -ENOSYS;
 
        if (sb_any_quota_enabled(sb) && sb->s_qcop && sb->s_qcop->quota_off)
                ret = sb->s_qcop->quota_off(sb, -1);
        return ret;
}
 
#else
 
/*
 * NO-OP when quota not configured.
 */
#define sb_dquot_ops                            (NULL)
#define sb_quotactl_ops                         (NULL)
#define DQUOT_INIT(inode)                       do { } while(0)
#define DQUOT_DROP(inode)                       do { } while(0)
#define DQUOT_ALLOC_INODE(inode)                (0)
#define DQUOT_FREE_INODE(inode)                 do { } while(0)
#define DQUOT_SYNC(sb)                          do { } while(0)
#define DQUOT_OFF(sb)                           do { } while(0)
#define DQUOT_TRANSFER(inode, iattr)            (0)
static inline int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
        inode_add_bytes(inode, nr);
        return 0;
}
 
static inline int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
{
        DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr);
        mark_inode_dirty(inode);
        return 0;
}
 
static inline int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
        inode_add_bytes(inode, nr);
        return 0;
}
 
static inline int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
{
        DQUOT_ALLOC_SPACE_NODIRTY(inode, nr);
        mark_inode_dirty(inode);
        return 0;
}
 
static inline void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
        inode_sub_bytes(inode, nr);
}
 
static inline void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
{
        DQUOT_FREE_SPACE_NODIRTY(inode, nr);
        mark_inode_dirty(inode);
}
 
#endif /* CONFIG_QUOTA */
 
#define DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr) DQUOT_PREALLOC_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
#define DQUOT_PREALLOC_BLOCK(inode, nr) DQUOT_PREALLOC_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
#define DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr) DQUOT_ALLOC_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
#define DQUOT_ALLOC_BLOCK(inode, nr) DQUOT_ALLOC_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
#define DQUOT_FREE_BLOCK_NODIRTY(inode, nr) DQUOT_FREE_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
#define DQUOT_FREE_BLOCK(inode, nr) DQUOT_FREE_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
 
#endif /* _LINUX_QUOTAOPS_ */

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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [quotaops.h] - Blame information for rev 81

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* Definitions for diskquota-operations. When diskquota is configured these`
3			`* macros expand to the right source-code.`
4			`*`
5			`* Author: Marco van Wieringen <mvw@planets.elm.net>`
6			`*`
7			`* Version: $Id: quotaops.h,v 1.2 1998/01/15 16:22:26 ecd Exp $`
8			`*`
9			`*/`
10			`#ifndef _LINUX_QUOTAOPS_`
11			`#define _LINUX_QUOTAOPS_`
12
13			`#include <linux/smp_lock.h>`
14
15			`#include <linux/fs.h>`
16
17			`#if defined(CONFIG_QUOTA)`
18
19			`/*`
20			`* declaration of quota_function calls in kernel.`
21			`*/`
22			`extern void sync_dquots(struct super_block *sb, int type);`
23
24			`extern int dquot_initialize(struct inode *inode, int type);`
25			`extern int dquot_drop(struct inode *inode);`
26
27			`extern int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc);`
28			`extern int dquot_alloc_inode(const struct inode *inode, unsigned long number);`
29
30			`extern int dquot_free_space(struct inode *inode, qsize_t number);`
31			`extern int dquot_free_inode(const struct inode *inode, unsigned long number);`
32
33			`extern int dquot_transfer(struct inode inode, struct iattr iattr);`
34			`extern int dquot_commit(struct dquot *dquot);`
35			`extern int dquot_acquire(struct dquot *dquot);`
36			`extern int dquot_release(struct dquot *dquot);`
37			`extern int dquot_commit_info(struct super_block *sb, int type);`
38			`extern int dquot_mark_dquot_dirty(struct dquot *dquot);`
39
40			`extern int vfs_quota_on(struct super_block sb, int type, int format_id, char path);`
41			`extern int vfs_quota_on_mount(struct super_block sb, char qf_name,`
42			`int format_id, int type);`
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);`
50
51			`/*`
52			`* Operations supported for diskquotas.`
53			`*/`
54			`extern struct dquot_operations dquot_operations;`
55			`extern struct quotactl_ops vfs_quotactl_ops;`
56
57			`#define sb_dquot_ops (&dquot_operations)`
58			`#define sb_quotactl_ops (&vfs_quotactl_ops)`
59
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)`
63			`{`
64			`BUG_ON(!inode->i_sb);`
65			`if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode))`
66			`inode->i_sb->dq_op->initialize(inode, -1);`
67			`}`
68
69			`/* The same as with DQUOT_INIT */`
70			`static __inline__ void DQUOT_DROP(struct inode *inode)`
71			`{`
72			`/* Here we can get arbitrary inode from clear_inode() so we have`
73			`* to be careful. OTOH we don't need locking as quota operations`
74			`* are allowed to change only at mount time */`
75			`if (!IS_NOQUOTA(inode) && inode->i_sb && inode->i_sb->dq_op`
76			`&& inode->i_sb->dq_op->drop) {`
77			`int cnt;`
78			`/* Test before calling to rule out calls from proc and such`
79			`* where we are not allowed to block. Note that this is`
80			`* actually reliable test even without the lock - the caller`
81			`* must assure that nobody can come after the DQUOT_DROP and`
82			`* add quota pointers back anyway */`
83			`for (cnt = 0; cnt < MAXQUOTAS; cnt++)`
84			`if (inode->i_dquot[cnt] != NODQUOT)`
85			`break;`
86			`if (cnt < MAXQUOTAS)`
87			`inode->i_sb->dq_op->drop(inode);`
88			`}`
89			`}`
90
91			`/* The following allocation/freeing/transfer functions must be called inside`
92			`* a transaction (deadlocks possible otherwise) */`
93			`static __inline__ int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)`
94			`{`
95			`if (sb_any_quota_enabled(inode->i_sb)) {`
96			`/* Used space is updated in alloc_space() */`
97			`if (inode->i_sb->dq_op->alloc_space(inode, nr, 1) == NO_QUOTA)`
98			`return 1;`
99			`}`
100			`else`
101			`inode_add_bytes(inode, nr);`
102			`return 0;`
103			`}`
104
105			`static __inline__ int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)`
106			`{`
107			`int ret;`
108			`if (!(ret = DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr)))`
109			`mark_inode_dirty(inode);`
110			`return ret;`
111			`}`
112
113			`static __inline__ int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)`
114			`{`
115			`if (sb_any_quota_enabled(inode->i_sb)) {`
116			`/* Used space is updated in alloc_space() */`
117			`if (inode->i_sb->dq_op->alloc_space(inode, nr, 0) == NO_QUOTA)`
118			`return 1;`
119			`}`
120			`else`
121			`inode_add_bytes(inode, nr);`
122			`return 0;`
123			`}`
124
125			`static __inline__ int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)`
126			`{`
127			`int ret;`
128			`if (!(ret = DQUOT_ALLOC_SPACE_NODIRTY(inode, nr)))`
129			`mark_inode_dirty(inode);`
130			`return ret;`
131			`}`
132
133			`static __inline__ int DQUOT_ALLOC_INODE(struct inode *inode)`
134			`{`
135			`if (sb_any_quota_enabled(inode->i_sb)) {`
136			`DQUOT_INIT(inode);`
137			`if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)`
138			`return 1;`
139			`}`
140			`return 0;`
141			`}`
142
143			`static __inline__ void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)`
144			`{`
145			`if (sb_any_quota_enabled(inode->i_sb))`
146			`inode->i_sb->dq_op->free_space(inode, nr);`
147			`else`
148			`inode_sub_bytes(inode, nr);`
149			`}`
150
151			`static __inline__ void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)`
152			`{`
153			`DQUOT_FREE_SPACE_NODIRTY(inode, nr);`
154			`mark_inode_dirty(inode);`
155			`}`
156
157			`static __inline__ void DQUOT_FREE_INODE(struct inode *inode)`
158			`{`
159			`if (sb_any_quota_enabled(inode->i_sb))`
160			`inode->i_sb->dq_op->free_inode(inode, 1);`
161			`}`
162
163			`static __inline__ int DQUOT_TRANSFER(struct inode inode, struct iattr iattr)`
164			`{`
165			`if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode)) {`
166			`DQUOT_INIT(inode);`
167			`if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA)`
168			`return 1;`
169			`}`
170			`return 0;`
171			`}`
172
173			`/* The following two functions cannot be called inside a transaction */`
174			`#define DQUOT_SYNC(sb) sync_dquots(sb, -1)`
175
176			`static __inline__ int DQUOT_OFF(struct super_block *sb)`
177			`{`
178			`int ret = -ENOSYS;`
179
180			`if (sb_any_quota_enabled(sb) && sb->s_qcop && sb->s_qcop->quota_off)`
181			`ret = sb->s_qcop->quota_off(sb, -1);`
182			`return ret;`
183			`}`
184
185			`#else`
186
187			`/*`
188			`* NO-OP when quota not configured.`
189			`*/`
190			`#define sb_dquot_ops (NULL)`
191			`#define sb_quotactl_ops (NULL)`
192			`#define DQUOT_INIT(inode) do { } while(0)`
193			`#define DQUOT_DROP(inode) do { } while(0)`
194			`#define DQUOT_ALLOC_INODE(inode) (0)`
195			`#define DQUOT_FREE_INODE(inode) do { } while(0)`
196			`#define DQUOT_SYNC(sb) do { } while(0)`
197			`#define DQUOT_OFF(sb) do { } while(0)`
198			`#define DQUOT_TRANSFER(inode, iattr) (0)`
199			`static inline int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)`
200			`{`
201			`inode_add_bytes(inode, nr);`
202			`return 0;`
203			`}`
204
205			`static inline int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)`
206			`{`
207			`DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr);`
208			`mark_inode_dirty(inode);`
209			`return 0;`
210			`}`
211
212			`static inline int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)`
213			`{`
214			`inode_add_bytes(inode, nr);`
215			`return 0;`
216			`}`
217
218			`static inline int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)`
219			`{`
220			`DQUOT_ALLOC_SPACE_NODIRTY(inode, nr);`
221			`mark_inode_dirty(inode);`
222			`return 0;`
223			`}`
224
225			`static inline void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)`
226			`{`
227			`inode_sub_bytes(inode, nr);`
228			`}`
229
230			`static inline void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)`
231			`{`
232			`DQUOT_FREE_SPACE_NODIRTY(inode, nr);`
233			`mark_inode_dirty(inode);`
234			`}`
235
236			`#endif /* CONFIG_QUOTA */`
237
238			`#define DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr) DQUOT_PREALLOC_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)`
239			`#define DQUOT_PREALLOC_BLOCK(inode, nr) DQUOT_PREALLOC_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)`
240			`#define DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr) DQUOT_ALLOC_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)`
241			`#define DQUOT_ALLOC_BLOCK(inode, nr) DQUOT_ALLOC_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)`
242			`#define DQUOT_FREE_BLOCK_NODIRTY(inode, nr) DQUOT_FREE_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)`
243			`#define DQUOT_FREE_BLOCK(inode, nr) DQUOT_FREE_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)`
244
245			`#endif /* _LINUX_QUOTAOPS_ */`