431547b3c4
Add a flags argument to struct xattr_handler and pass it to all xattr handler methods. This allows using the same methods for multiple handlers, e.g. for the ACL methods which perform exactly the same action for the access and default ACLs, just using a different underlying attribute. With a little more groundwork it'll also allow sharing the methods for the regular user/trusted/secure handlers in extN, ocfs2 and jffs2 like it's already done for xfs in this patch. Also change the inode argument to the handlers to a dentry to allow using the handlers mechnism for filesystems that require it later, e.g. cifs. [with GFS2 bits updated by Steven Whitehouse <swhiteho@redhat.com>] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/*
|
|
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
|
|
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef __EATTR_DOT_H__
|
|
#define __EATTR_DOT_H__
|
|
|
|
struct gfs2_inode;
|
|
struct iattr;
|
|
|
|
#define GFS2_EA_REC_LEN(ea) be32_to_cpu((ea)->ea_rec_len)
|
|
#define GFS2_EA_DATA_LEN(ea) be32_to_cpu((ea)->ea_data_len)
|
|
|
|
#define GFS2_EA_SIZE(ea) \
|
|
ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \
|
|
((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \
|
|
(sizeof(__be64) * (ea)->ea_num_ptrs)), 8)
|
|
|
|
#define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs)
|
|
#define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST)
|
|
|
|
#define GFS2_EAREQ_SIZE_STUFFED(er) \
|
|
ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8)
|
|
|
|
#define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1))
|
|
#define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len)
|
|
|
|
#define GFS2_EA2DATAPTRS(ea) \
|
|
((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8)))
|
|
|
|
#define GFS2_EA2NEXT(ea) \
|
|
((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea)))
|
|
|
|
#define GFS2_EA_BH2FIRST(bh) \
|
|
((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header)))
|
|
|
|
struct gfs2_ea_request {
|
|
const char *er_name;
|
|
char *er_data;
|
|
unsigned int er_name_len;
|
|
unsigned int er_data_len;
|
|
unsigned int er_type; /* GFS2_EATYPE_... */
|
|
};
|
|
|
|
struct gfs2_ea_location {
|
|
struct buffer_head *el_bh;
|
|
struct gfs2_ea_header *el_ea;
|
|
struct gfs2_ea_header *el_prev;
|
|
};
|
|
|
|
extern int __gfs2_xattr_set(struct inode *inode, const char *name,
|
|
const void *value, size_t size,
|
|
int flags, int type);
|
|
extern ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size);
|
|
extern int gfs2_ea_dealloc(struct gfs2_inode *ip);
|
|
|
|
/* Exported to acl.c */
|
|
|
|
extern int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **data);
|
|
extern int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data);
|
|
|
|
#endif /* __EATTR_DOT_H__ */
|