[linux-2.6-block.git] / include / linux / xattr.h

/*
  File: linux/xattr.h

  Extended attributes handling.

  Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
  Copyright (c) 2001-2002 Silicon Graphics, Inc.  All Rights Reserved.
  Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
*/
#ifndef _LINUX_XATTR_H
#define _LINUX_XATTR_H

#define XATTR_CREATE	0x1	/* set value, fail if attr already exists */
#define XATTR_REPLACE	0x2	/* set value, fail if attr does not exist */

#ifdef  __KERNEL__

#include <linux/types.h>

/* Namespaces */
#define XATTR_OS2_PREFIX "os2."
#define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)

#define XATTR_SECURITY_PREFIX	"security."
#define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)

#define XATTR_SYSTEM_PREFIX "system."
#define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)

#define XATTR_TRUSTED_PREFIX "trusted."
#define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)

#define XATTR_USER_PREFIX "user."
#define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)

struct inode;
struct dentry;

struct xattr_handler {
	char *prefix;
	size_t (*list)(struct inode *inode, char *list, size_t list_size,
		       const char *name, size_t name_len);
	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);
};

ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
int vfs_removexattr(struct dentry *, const char *);

ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
int generic_removexattr(struct dentry *dentry, const char *name);

#endif  /*  __KERNEL__  */

#endif	/* _LINUX_XATTR_H */
Commit	Line	Data
	1	/*
	2	File: linux/xattr.h
	3
	4	Extended attributes handling.
	5
	6	Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
	7	Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
	8	Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
	9	*/
	10	#ifndef _LINUX_XATTR_H
	11	#define _LINUX_XATTR_H
	12
	13	#define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
	14	#define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */
	15
	16	#ifdef __KERNEL__
	17
	18	#include <linux/types.h>
	19
	20	/* Namespaces */
	21	#define XATTR_OS2_PREFIX "os2."
	22	#define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
	23
	24	#define XATTR_SECURITY_PREFIX "security."
	25	#define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
	26
	27	#define XATTR_SYSTEM_PREFIX "system."
	28	#define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
	29
	30	#define XATTR_TRUSTED_PREFIX "trusted."
	31	#define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
	32
	33	#define XATTR_USER_PREFIX "user."
	34	#define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
	35
	36	struct inode;
	37	struct dentry;
	38
	39	struct xattr_handler {
	40	char *prefix;
	41	size_t (list)(struct inode inode, char *list, size_t list_size,
	42	const char *name, size_t name_len);
	43	int (get)(struct inode inode, const char name, void buffer,
	44	size_t size);
	45	int (set)(struct inode inode, const char name, const void buffer,
	46	size_t size, int flags);
	47	};
	48
	49	ssize_t xattr_getsecurity(struct inode , const char , void *, size_t);
	50	ssize_t vfs_getxattr(struct dentry , const char , void *, size_t);
	51	ssize_t vfs_listxattr(struct dentry d, char list, size_t size);
	52	int vfs_setxattr(struct dentry , const char , const void *, size_t, int);
	53	int vfs_removexattr(struct dentry , const char );
	54
	55	ssize_t generic_getxattr(struct dentry dentry, const char name, void *buffer, size_t size);
	56	ssize_t generic_listxattr(struct dentry dentry, char buffer, size_t buffer_size);
	57	int generic_setxattr(struct dentry dentry, const char name, const void *value, size_t size, int flags);
	58	int generic_removexattr(struct dentry dentry, const char name);
	59
	60	#endif /* __KERNEL__ */
	61
	62	#endif /* _LINUX_XATTR_H */