/*

  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  */