60 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * linux/fs/ext2/xattr_security.c4 * Handler for storing security labels as extended attributes.5 */6 7#include "ext2.h"8#include <linux/security.h>9#include "xattr.h"10 11static int12ext2_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 20static int21ext2_xattr_security_set(const struct xattr_handler *handler,22 struct mnt_idmap *idmap,23 struct dentry *unused, struct inode *inode,24 const char *name, const void *value,25 size_t size, int flags)26{27 return ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, name,28 value, size, flags);29}30 31static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array,32 void *fs_info)33{34 const struct xattr *xattr;35 int err = 0;36 37 for (xattr = xattr_array; xattr->name != NULL; xattr++) {38 err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,39 xattr->name, xattr->value,40 xattr->value_len, 0);41 if (err < 0)42 break;43 }44 return err;45}46 47int48ext2_init_security(struct inode *inode, struct inode *dir,49 const struct qstr *qstr)50{51 return security_inode_init_security(inode, dir, qstr,52 &ext2_initxattrs, NULL);53}54 55const struct xattr_handler ext2_xattr_security_handler = {56 .prefix = XATTR_SECURITY_PREFIX,57 .get = ext2_xattr_security_get,58 .set = ext2_xattr_security_set,59};60