jfs_xattr.h
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/*
* Copyright (C) International Business Machines Corp., 2000-2002
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef H_JFS_XATTR
#define H_JFS_XATTR
/*
* jfs_ea_list describe the on-disk format of the extended attributes.
* I know the null-terminator is redundant since namelen is stored, but
* I am maintaining compatibility with OS/2 where possible.
*/
struct jfs_ea {
u8 flag; /* Unused? */
u8 namelen; /* Length of name */
__le16 valuelen; /* Length of value */
char name[0]; /* Attribute name (includes null-terminator) */
}; /* Value immediately follows name */
struct jfs_ea_list {
__le32 size; /* overall size */
struct jfs_ea ea[0]; /* Variable length list */
};
/* Macros for defining maxiumum number of bytes supported for EAs */
#define MAXEASIZE 65535
#define MAXEALISTSIZE MAXEASIZE
/*
* some macros for dealing with variable length EA lists.
*/
#define EA_SIZE(ea) \
(sizeof (struct jfs_ea) + (ea)->namelen + 1 + \
le16_to_cpu((ea)->valuelen))
#define NEXT_EA(ea) ((struct jfs_ea *) (((char *) (ea)) + (EA_SIZE (ea))))
#define FIRST_EA(ealist) ((ealist)->ea)
#define EALIST_SIZE(ealist) le32_to_cpu((ealist)->size)
#define END_EALIST(ealist) \
((struct jfs_ea *) (((char *) (ealist)) + EALIST_SIZE(ealist)))
extern int __jfs_setxattr(tid_t, struct inode *, const char *, const void *,
size_t, int);
extern int jfs_setxattr(struct dentry *, const char *, const void *, size_t,
int);
extern ssize_t __jfs_getxattr(struct inode *, const char *, void *, size_t);
extern ssize_t jfs_getxattr(struct dentry *, const char *, void *, size_t);
extern ssize_t jfs_listxattr(struct dentry *, char *, size_t);
extern int jfs_removexattr(struct dentry *, const char *);
extern const struct xattr_handler *jfs_xattr_handlers[];
#ifdef CONFIG_JFS_SECURITY
extern int jfs_init_security(tid_t, struct inode *, struct inode *,
const struct qstr *);
#else
static inline int jfs_init_security(tid_t tid, struct inode *inode,
struct inode *dir, const struct qstr *qstr)
{
return 0;
}
#endif
#endif /* H_JFS_XATTR */