http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/quotaops.h

/* * 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/config.h> #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_ */