1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/fs/ext2/xattr_security.c 4 * Handler for storing security labels as extended attributes. 5 */ 6 7 #include "ext2.h" 8 #include <linux/security.h> 9 #include "xattr.h" 10 11 static int 12 ext2_xattr_security_get(const struct xattr_handler *handler, 13 struct dentry *unused, struct inode *inode, 14 const char *name, void *buffer, size_t size) 15 { 16 return ext2_xattr_get(inode, EXT2_XATTR_INDEX_SECURITY, name, 17 buffer, size); 18 } 19 20 static int 21 ext2_xattr_security_set(const struct xattr_handler *handler, 22 struct dentry *unused, struct inode *inode, 23 const char *name, const void *value, 24 size_t size, int flags) 25 { 26 return ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, name, 27 value, size, flags); 28 } 29 30 static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array, 31 void *fs_info) 32 { 33 const struct xattr *xattr; 34 int err = 0; 35 36 for (xattr = xattr_array; xattr->name != NULL; xattr++) { 37 err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, 38 xattr->name, xattr->value, 39 xattr->value_len, 0); 40 if (err < 0) 41 break; 42 } 43 return err; 44 } 45 46 int 47 ext2_init_security(struct inode *inode, struct inode *dir, 48 const struct qstr *qstr) 49 { 50 return security_inode_init_security(inode, dir, qstr, 51 &ext2_initxattrs, NULL); 52 } 53 54 const struct xattr_handler ext2_xattr_security_handler = { 55 .prefix = XATTR_SECURITY_PREFIX, 56 .get = ext2_xattr_security_get, 57 .set = ext2_xattr_security_set, 58 }; 59