2 * linux/fs/hfsplus/xattr_trusted.c
4 * Vyacheslav Dubeyko <slava@dubeyko.com>
6 * Handler for storing security labels as extended attributes.
9 #include <linux/security.h>
10 #include <linux/nls.h>
12 #include "hfsplus_fs.h"
16 static int hfsplus_security_getxattr(struct dentry *dentry, const char *name,
17 void *buffer, size_t size, int type)
19 return hfsplus_getxattr(dentry, name, buffer, size,
20 XATTR_SECURITY_PREFIX,
21 XATTR_SECURITY_PREFIX_LEN);
24 static int hfsplus_security_setxattr(struct dentry *dentry, const char *name,
25 const void *buffer, size_t size, int flags, int type)
30 if (!strcmp(name, ""))
33 xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
37 strcpy(xattr_name, XATTR_SECURITY_PREFIX);
38 strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
40 res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
45 static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list,
46 size_t list_size, const char *name, size_t name_len, int type)
49 * This method is not used.
50 * It is used hfsplus_listxattr() instead of generic_listxattr().
55 static int hfsplus_initxattrs(struct inode *inode,
56 const struct xattr *xattr_array,
59 const struct xattr *xattr;
63 xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
67 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
69 if (!strcmp(xattr->name, ""))
72 strcpy(xattr_name, XATTR_SECURITY_PREFIX);
74 XATTR_SECURITY_PREFIX_LEN, xattr->name);
76 XATTR_SECURITY_PREFIX_LEN + strlen(xattr->name), 0, 1);
78 err = __hfsplus_setxattr(inode, xattr_name,
79 xattr->value, xattr->value_len, 0);
87 int hfsplus_init_security(struct inode *inode, struct inode *dir,
88 const struct qstr *qstr)
90 return security_inode_init_security(inode, dir, qstr,
91 &hfsplus_initxattrs, NULL);
94 int hfsplus_init_inode_security(struct inode *inode,
96 const struct qstr *qstr)
100 err = hfsplus_init_posix_acl(inode, dir);
102 err = hfsplus_init_security(inode, dir, qstr);
106 const struct xattr_handler hfsplus_xattr_security_handler = {
107 .prefix = XATTR_SECURITY_PREFIX,
108 .list = hfsplus_security_listxattr,
109 .get = hfsplus_security_getxattr,
110 .set = hfsplus_security_setxattr,