fs/reiserfs/xattr_user.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include "reiserfs.h"
0003 #include <linux/errno.h>
0004 #include <linux/fs.h>
0005 #include <linux/pagemap.h>
0006 #include <linux/xattr.h>
0007 #include "xattr.h"
0008 #include <linux/uaccess.h>
0009
0010 static int
0011 user_get(const struct xattr_handler *handler, struct dentry *unused,
0012      struct inode *inode, const char *name, void *buffer, size_t size)
0013 {
0014     if (!reiserfs_xattrs_user(inode->i_sb))
0015         return -EOPNOTSUPP;
0016     return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
0017                   buffer, size);
0018 }
0019
0020 static int
0021 user_set(const struct xattr_handler *handler, struct user_namespace *mnt_userns,
0022      struct dentry *unused,
0023      struct inode *inode, const char *name, const void *buffer,
0024      size_t size, int flags)
0025 {
0026     if (!reiserfs_xattrs_user(inode->i_sb))
0027         return -EOPNOTSUPP;
0028     return reiserfs_xattr_set(inode,
0029                   xattr_full_name(handler, name),
0030                   buffer, size, flags);
0031 }
0032
0033 static bool user_list(struct dentry *dentry)
0034 {
0035     return reiserfs_xattrs_user(dentry->d_sb);
0036 }
0037
0038 const struct xattr_handler reiserfs_xattr_user_handler = {
0039     .prefix = XATTR_USER_PREFIX,
0040     .get = user_get,
0041     .set = user_set,
0042     .list = user_list,
0043 };