2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
10 #include <linux/sched.h>
11 #include <linux/slab.h>
12 #include <linux/spinlock.h>
13 #include <linux/completion.h>
14 #include <linux/buffer_head.h>
15 #include <linux/xattr.h>
16 #include <linux/posix_acl.h>
17 #include <linux/posix_acl_xattr.h>
18 #include <linux/gfs2_ondisk.h>
30 static const char *gfs2_acl_name(int type)
34 return GFS2_POSIX_ACL_ACCESS;
35 case ACL_TYPE_DEFAULT:
36 return GFS2_POSIX_ACL_DEFAULT;
41 struct posix_acl *gfs2_get_acl(struct inode *inode, int type)
43 struct gfs2_inode *ip = GFS2_I(inode);
44 struct posix_acl *acl;
52 name = gfs2_acl_name(type);
54 return ERR_PTR(-EINVAL);
56 len = gfs2_xattr_acl_get(ip, name, &data);
62 acl = posix_acl_from_xattr(&init_user_ns, data, len);
67 static int gfs2_set_mode(struct inode *inode, umode_t mode)
71 if (mode != inode->i_mode) {
73 mark_inode_dirty(inode);
79 int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
84 const char *name = gfs2_acl_name(type);
88 if (acl->a_count > GFS2_ACL_MAX_ENTRIES)
91 if (type == ACL_TYPE_ACCESS) {
92 umode_t mode = inode->i_mode;
94 error = posix_acl_equiv_mode(acl, &mode);
101 error = gfs2_set_mode(inode, mode);
107 len = posix_acl_to_xattr(&init_user_ns, acl, NULL, 0);
110 data = kmalloc(len, GFP_NOFS);
113 error = posix_acl_to_xattr(&init_user_ns, acl, data, len);
121 error = __gfs2_xattr_set(inode, name, data, len, 0, GFS2_EATYPE_SYS);
126 set_cached_acl(inode, type, acl);
128 forget_cached_acl(inode, type);