1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _LINUX_NFS4_MOUNT_H
3#define _LINUX_NFS4_MOUNT_H
4
5/*
6 * linux/include/linux/nfs4_mount.h
7 *
8 * Copyright (C) 2002 Trond Myklebust
9 *
10 * structure passed from user-space to kernel-space during an nfsv4 mount
11 */
12
13/*
14 * WARNING! Do not delete or change the order of these fields. If
15 * a new field is required then add it to the end. The version field
16 * tracks which fields are present. This will ensure some measure of
17 * mount-to-kernel version compatibility. Some of these aren't used yet
18 * but here they are anyway.
19 */
20#define NFS4_MOUNT_VERSION 1
21
22struct nfs_string {
23 unsigned int len;
24 const char __user * data;
25};
26
27struct nfs4_mount_data {
28 int version; /* 1 */
29 int flags; /* 1 */
30 int rsize; /* 1 */
31 int wsize; /* 1 */
32 int timeo; /* 1 */
33 int retrans; /* 1 */
34 int acregmin; /* 1 */
35 int acregmax; /* 1 */
36 int acdirmin; /* 1 */
37 int acdirmax; /* 1 */
38
39 /* see the definition of 'struct clientaddr4' in RFC3010 */
40 struct nfs_string client_addr; /* 1 */
41
42 /* Mount path */
43 struct nfs_string mnt_path; /* 1 */
44
45 /* Server details */
46 struct nfs_string hostname; /* 1 */
47 /* Server IP address */
48 unsigned int host_addrlen; /* 1 */
49 struct sockaddr __user * host_addr; /* 1 */
50
51 /* Transport protocol to use */
52 int proto; /* 1 */
53
54 /* Pseudo-flavours to use for authentication. See RFC2623 */
55 int auth_flavourlen; /* 1 */
56 int __user *auth_flavours; /* 1 */
57};
58
59/* bits in the flags field */
60/* Note: the fields that correspond to existing NFSv2/v3 mount options
61 * should mirror the values from include/linux/nfs_mount.h
62 */
63
64#define NFS4_MOUNT_SOFT 0x0001 /* 1 */
65#define NFS4_MOUNT_INTR 0x0002 /* 1 */
66#define NFS4_MOUNT_NOCTO 0x0010 /* 1 */
67#define NFS4_MOUNT_NOAC 0x0020 /* 1 */
68#define NFS4_MOUNT_STRICTLOCK 0x1000 /* 1 */
69#define NFS4_MOUNT_UNSHARED 0x8000 /* 1 */
70#define NFS4_MOUNT_FLAGMASK 0x9033
71
72#endif
73