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