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/slab.h>
11 #include <linux/spinlock.h>
12 #include <linux/completion.h>
13 #include <linux/buffer_head.h>
14 #include <linux/capability.h>
15 #include <linux/xattr.h>
16 #include <linux/gfs2_ondisk.h>
17 #include <linux/lm_interface.h>
18 #include <asm/uaccess.h>
28 * gfs2_ea_name2type - get the type of the ea, and truncate type from the name
29 * @namep: ea name, possibly with type appended
31 * Returns: GFS2_EATYPE_XXX
34 unsigned int gfs2_ea_name2type(const char *name, const char **truncated_name)
38 if (strncmp(name, "system.", 7) == 0) {
39 type = GFS2_EATYPE_SYS;
41 *truncated_name = name + sizeof("system.") - 1;
42 } else if (strncmp(name, "user.", 5) == 0) {
43 type = GFS2_EATYPE_USR;
45 *truncated_name = name + sizeof("user.") - 1;
46 } else if (strncmp(name, "security.", 9) == 0) {
47 type = GFS2_EATYPE_SECURITY;
49 *truncated_name = name + sizeof("security.") - 1;
51 type = GFS2_EATYPE_UNUSED;
53 *truncated_name = NULL;
59 static int user_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
61 struct inode *inode = &ip->i_inode;
63 return gfs2_ea_get_i(ip, er);
66 static int user_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
68 struct inode *inode = &ip->i_inode;
70 return gfs2_ea_set_i(ip, er);
73 static int user_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
75 struct inode *inode = &ip->i_inode;
77 return gfs2_ea_remove_i(ip, er);
80 static int system_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
82 if (!GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len) &&
83 !GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len) &&
84 !capable(CAP_SYS_ADMIN))
87 if (GFS2_SB(&ip->i_inode)->sd_args.ar_posix_acl == 0 &&
88 (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len) ||
89 GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)))
92 return gfs2_ea_get_i(ip, er);
95 static int system_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
100 if (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len)) {
101 if (!(er->er_flags & GFS2_ERF_MODE)) {
102 er->er_mode = ip->i_inode.i_mode;
103 er->er_flags |= GFS2_ERF_MODE;
105 error = gfs2_acl_validate_set(ip, 1, er,
106 &remove, &er->er_mode);
109 error = gfs2_ea_set_i(ip, er);
113 gfs2_ea_remove_i(ip, er);
116 } else if (GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)) {
117 error = gfs2_acl_validate_set(ip, 0, er,
122 error = gfs2_ea_set_i(ip, er);
124 error = gfs2_ea_remove_i(ip, er);
125 if (error == -ENODATA)
134 static int system_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
136 if (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len)) {
137 int error = gfs2_acl_validate_remove(ip, 1);
141 } else if (GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)) {
142 int error = gfs2_acl_validate_remove(ip, 0);
149 return gfs2_ea_remove_i(ip, er);
152 static int security_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
154 struct inode *inode = &ip->i_inode;
156 return gfs2_ea_get_i(ip, er);
159 static int security_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
161 struct inode *inode = &ip->i_inode;
163 return gfs2_ea_set_i(ip, er);
166 static int security_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
168 struct inode *inode = &ip->i_inode;
170 return gfs2_ea_remove_i(ip, er);
173 static const struct gfs2_eattr_operations gfs2_user_eaops = {
174 .eo_get = user_eo_get,
175 .eo_set = user_eo_set,
176 .eo_remove = user_eo_remove,
180 const struct gfs2_eattr_operations gfs2_system_eaops = {
181 .eo_get = system_eo_get,
182 .eo_set = system_eo_set,
183 .eo_remove = system_eo_remove,
187 static const struct gfs2_eattr_operations gfs2_security_eaops = {
188 .eo_get = security_eo_get,
189 .eo_set = security_eo_set,
190 .eo_remove = security_eo_remove,
191 .eo_name = "security",
194 const struct gfs2_eattr_operations *gfs2_ea_ops[] = {
198 &gfs2_security_eaops,