/* 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; }; #ifdef CONFIG_REISERFS_FS_XATTR #define is_reiserfs_priv_object(inode) IS_PRIVATE(inode) #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_delete_xattrs(struct inode *inode); int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs); int reiserfs_xattr_init(struct super_block *sb, int mount_flags); 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; int reiserfs_xattr_register_handlers(void) __init; void reiserfs_xattr_unregister_handlers(void); 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_mark_inode_private(struct inode *inode) { inode->i_flags |= S_PRIVATE; } static inline void reiserfs_init_xattr_rwsem(struct inode *inode) { init_rwsem(&REISERFS_I(inode)->xattr_sem); } #else #define is_reiserfs_priv_object(inode) 0 #define reiserfs_mark_inode_private(inode) do {;} while(0) #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 #define reiserfs_xattr_register_handlers() 0 #define reiserfs_xattr_unregister_handlers() static inline int reiserfs_delete_xattrs(struct inode *inode) { return 0; }; static inline int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs) { return 0; }; static inline int reiserfs_xattr_init(struct super_block *sb, int mount_flags) { sb->s_flags = (sb->s_flags & ~MS_POSIXACL); /* to be sure */ return 0; }; static inline void reiserfs_init_xattr_rwsem(struct inode *inode) { } #endif /* CONFIG_REISERFS_FS_XATTR */ #endif /* __KERNEL__ */ #endif /* _LINUX_REISERFS_XATTR_H */