cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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xattr_trusted.c (1138B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * linux/fs/ext2/xattr_trusted.c
      4 * Handler for trusted extended attributes.
      5 *
      6 * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
      7 */
      8
      9#include "ext2.h"
     10#include "xattr.h"
     11
     12static bool
     13ext2_xattr_trusted_list(struct dentry *dentry)
     14{
     15	return capable(CAP_SYS_ADMIN);
     16}
     17
     18static int
     19ext2_xattr_trusted_get(const struct xattr_handler *handler,
     20		       struct dentry *unused, struct inode *inode,
     21		       const char *name, void *buffer, size_t size)
     22{
     23	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_TRUSTED, name,
     24			      buffer, size);
     25}
     26
     27static int
     28ext2_xattr_trusted_set(const struct xattr_handler *handler,
     29		       struct user_namespace *mnt_userns,
     30		       struct dentry *unused, struct inode *inode,
     31		       const char *name, const void *value,
     32		       size_t size, int flags)
     33{
     34	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_TRUSTED, name,
     35			      value, size, flags);
     36}
     37
     38const struct xattr_handler ext2_xattr_trusted_handler = {
     39	.prefix	= XATTR_TRUSTED_PREFIX,
     40	.list	= ext2_xattr_trusted_list,
     41	.get	= ext2_xattr_trusted_get,
     42	.set	= ext2_xattr_trusted_set,
     43};