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