| /* |
| File: linux/reiserfs_xattr.h |
| */ |
| |
| #ifndef _LINUX_REISERFS_XATTR_H |
| #define _LINUX_REISERFS_XATTR_H |
| |
| #include <linux/types.h> |
| |
| /* Magic value in header */ |
| #define REISERFS_XATTR_MAGIC 0x52465841 /* "RFXA" */ |
| |
| struct reiserfs_xattr_header { |
| __le32 h_magic; /* magic number for identification */ |
| __le32 h_hash; /* hash of the value */ |
| }; |
| |
| #ifdef __KERNEL__ |
| |
| #include <linux/init.h> |
| #include <linux/list.h> |
| #include <linux/rwsem.h> |
| #include <linux/reiserfs_fs_i.h> |
| #include <linux/reiserfs_fs.h> |
| |
| struct inode; |
| struct dentry; |
| struct iattr; |
| struct super_block; |
| struct nameidata; |
| |
| struct reiserfs_xattr_handler { |
| char *prefix; |
| int (*init) (void); |
| void (*exit) (void); |
| int (*get) (struct inode * inode, const char *name, void *buffer, |
| size_t size); |
| int (*set) (struct inode * inode, const char *name, const void *buffer, |
| size_t size, int flags); |
| int (*del) (struct inode * inode, const char *name); |
| int (*list) (struct inode * inode, const char *name, int namelen, |
| char *out); |
| struct list_head handlers; |
| }; |
| |
| int reiserfs_xattr_register_handlers(void) __init; |
| void reiserfs_xattr_unregister_handlers(void); |
| int reiserfs_xattr_init(struct super_block *sb, int mount_flags); |
| int reiserfs_delete_xattrs(struct inode *inode); |
| int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs); |
| |
| #ifdef CONFIG_REISERFS_FS_XATTR |
| #define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir) |
| ssize_t reiserfs_getxattr(struct dentry *dentry, const char *name, |
| void *buffer, size_t size); |
| int reiserfs_setxattr(struct dentry *dentry, const char *name, |
| const void *value, size_t size, int flags); |
| ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
| int reiserfs_removexattr(struct dentry *dentry, const char *name); |
| int reiserfs_permission(struct inode *inode, int mask); |
| |
| int reiserfs_xattr_del(struct inode *, const char *); |
| int reiserfs_xattr_get(const struct inode *, const char *, void *, size_t); |
| int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int); |
| |
| extern struct reiserfs_xattr_handler user_handler; |
| extern struct reiserfs_xattr_handler trusted_handler; |
| extern struct reiserfs_xattr_handler security_handler; |
| |
| static inline void reiserfs_write_lock_xattrs(struct super_block *sb) |
| { |
| down_write(&REISERFS_XATTR_DIR_SEM(sb)); |
| } |
| static inline void reiserfs_write_unlock_xattrs(struct super_block *sb) |
| { |
| up_write(&REISERFS_XATTR_DIR_SEM(sb)); |
| } |
| static inline void reiserfs_read_lock_xattrs(struct super_block *sb) |
| { |
| down_read(&REISERFS_XATTR_DIR_SEM(sb)); |
| } |
| |
| static inline void reiserfs_read_unlock_xattrs(struct super_block *sb) |
| { |
| up_read(&REISERFS_XATTR_DIR_SEM(sb)); |
| } |
| |
| static inline void reiserfs_write_lock_xattr_i(struct inode *inode) |
| { |
| down_write(&REISERFS_I(inode)->xattr_sem); |
| } |
| static inline void reiserfs_write_unlock_xattr_i(struct inode *inode) |
| { |
| up_write(&REISERFS_I(inode)->xattr_sem); |
| } |
| static inline void reiserfs_read_lock_xattr_i(struct inode *inode) |
| { |
| down_read(&REISERFS_I(inode)->xattr_sem); |
| } |
| |
| static inline void reiserfs_read_unlock_xattr_i(struct inode *inode) |
| { |
| up_read(&REISERFS_I(inode)->xattr_sem); |
| } |
| |
| static inline void reiserfs_init_xattr_rwsem(struct inode *inode) |
| { |
| init_rwsem(&REISERFS_I(inode)->xattr_sem); |
| } |
| |
| #else |
| |
| #define reiserfs_getxattr NULL |
| #define reiserfs_setxattr NULL |
| #define reiserfs_listxattr NULL |
| #define reiserfs_removexattr NULL |
| #define reiserfs_write_lock_xattrs(sb) do {;} while(0) |
| #define reiserfs_write_unlock_xattrs(sb) do {;} while(0) |
| #define reiserfs_read_lock_xattrs(sb) |
| #define reiserfs_read_unlock_xattrs(sb) |
| |
| #define reiserfs_permission NULL |
| |
| static inline void reiserfs_init_xattr_rwsem(struct inode *inode) |
| { |
| } |
| #endif /* CONFIG_REISERFS_FS_XATTR */ |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _LINUX_REISERFS_XATTR_H */ |