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_user.c (1121B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include "reiserfs.h"
      3#include <linux/errno.h>
      4#include <linux/fs.h>
      5#include <linux/pagemap.h>
      6#include <linux/xattr.h>
      7#include "xattr.h"
      8#include <linux/uaccess.h>
      9
     10static int
     11user_get(const struct xattr_handler *handler, struct dentry *unused,
     12	 struct inode *inode, const char *name, void *buffer, size_t size)
     13{
     14	if (!reiserfs_xattrs_user(inode->i_sb))
     15		return -EOPNOTSUPP;
     16	return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
     17				  buffer, size);
     18}
     19
     20static int
     21user_set(const struct xattr_handler *handler, struct user_namespace *mnt_userns,
     22	 struct dentry *unused,
     23	 struct inode *inode, const char *name, const void *buffer,
     24	 size_t size, int flags)
     25{
     26	if (!reiserfs_xattrs_user(inode->i_sb))
     27		return -EOPNOTSUPP;
     28	return reiserfs_xattr_set(inode,
     29				  xattr_full_name(handler, name),
     30				  buffer, size, flags);
     31}
     32
     33static bool user_list(struct dentry *dentry)
     34{
     35	return reiserfs_xattrs_user(dentry->d_sb);
     36}
     37
     38const struct xattr_handler reiserfs_xattr_user_handler = {
     39	.prefix = XATTR_USER_PREFIX,
     40	.get = user_get,
     41	.set = user_set,
     42	.list = user_list,
     43};