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 
22 struct nfs_string {
23 	unsigned int len;
24 	const char __user * data;
25 };
26 
27 struct 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