1 /* 2 * linux/fs/ext2/xattr_security.c 3 * Handler for storing security labels as extended attributes. 4 */ 5 6 #include "ext2.h" 7 #include <linux/security.h> 8 #include "xattr.h" 9 10 static int 11 ext2_xattr_security_get(const struct xattr_handler *handler, 12 struct dentry *dentry, const char *name, 13 void *buffer, size_t size) 14 { 15 return ext2_xattr_get(d_inode(dentry), EXT2_XATTR_INDEX_SECURITY, name, 16 buffer, size); 17 } 18 19 static int 20 ext2_xattr_security_set(const struct xattr_handler *handler, 21 struct dentry *dentry, const char *name, 22 const void *value, size_t size, int flags) 23 { 24 return ext2_xattr_set(d_inode(dentry), EXT2_XATTR_INDEX_SECURITY, name, 25 value, size, flags); 26 } 27 28 static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array, 29 void *fs_info) 30 { 31 const struct xattr *xattr; 32 int err = 0; 33 34 for (xattr = xattr_array; xattr->name != NULL; xattr++) { 35 err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, 36 xattr->name, xattr->value, 37 xattr->value_len, 0); 38 if (err < 0) 39 break; 40 } 41 return err; 42 } 43 44 int 45 ext2_init_security(struct inode *inode, struct inode *dir, 46 const struct qstr *qstr) 47 { 48 return security_inode_init_security(inode, dir, qstr, 49 &ext2_initxattrs, NULL); 50 } 51 52 const struct xattr_handler ext2_xattr_security_handler = { 53 .prefix = XATTR_SECURITY_PREFIX, 54 .get = ext2_xattr_security_get, 55 .set = ext2_xattr_security_set, 56 }; 57