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)
22 if (!strcmp(name, ""))
25 xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
29 strcpy(xattr_name, XATTR_SECURITY_PREFIX);
30 strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
32 res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
37 static int hfsplus_security_setxattr(struct dentry *dentry, const char *name,
38 const void *buffer, size_t size, int flags, int type)
43 if (!strcmp(name, ""))
46 xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
50 strcpy(xattr_name, XATTR_SECURITY_PREFIX);
51 strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
53 res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
58 static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list,
59 size_t list_size, const char *name, size_t name_len, int type)
62 * This method is not used.
63 * It is used hfsplus_listxattr() instead of generic_listxattr().
68 static int hfsplus_initxattrs(struct inode *inode,
69 const struct xattr *xattr_array,
72 const struct xattr *xattr;
76 xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
80 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
82 if (!strcmp(xattr->name, ""))
85 strcpy(xattr_name, XATTR_SECURITY_PREFIX);
87 XATTR_SECURITY_PREFIX_LEN, xattr->name);
89 XATTR_SECURITY_PREFIX_LEN + strlen(xattr->name), 0, 1);
91 err = __hfsplus_setxattr(inode, xattr_name,
92 xattr->value, xattr->value_len, 0);
100 int hfsplus_init_security(struct inode *inode, struct inode *dir,
101 const struct qstr *qstr)
103 return security_inode_init_security(inode, dir, qstr,
104 &hfsplus_initxattrs, NULL);
107 int hfsplus_init_inode_security(struct inode *inode,
109 const struct qstr *qstr)
113 err = hfsplus_init_posix_acl(inode, dir);
115 err = hfsplus_init_security(inode, dir, qstr);
119 const struct xattr_handler hfsplus_xattr_security_handler = {
120 .prefix = XATTR_SECURITY_PREFIX,
121 .list = hfsplus_security_listxattr,
122 .get = hfsplus_security_getxattr,
123 .set = hfsplus_security_setxattr,