1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _LINUX_NFS_MOUNT_H
3 #define _LINUX_NFS_MOUNT_H
4 
5 /*
6  *  linux/include/linux/nfs_mount.h
7  *
8  *  Copyright (C) 1992  Rick Sladkey
9  *
10  *  structure passed from user-space to kernel-space during an nfs mount
11  */
12 #include <linux/in.h>
13 #include <linux/nfs.h>
14 #include <linux/nfs2.h>
15 #include <linux/nfs3.h>
16 
17 /*
18  * WARNING!  Do not delete or change the order of these fields.  If
19  * a new field is required then add it to the end.  The version field
20  * tracks which fields are present.  This will ensure some measure of
21  * mount-to-kernel version compatibility.  Some of these aren't used yet
22  * but here they are anyway.
23  */
24 #define NFS_MOUNT_VERSION	6
25 #define NFS_MAX_CONTEXT_LEN	256
26 
27 struct nfs_mount_data {
28 	int		version;		/* 1 */
29 	int		fd;			/* 1 */
30 	struct nfs2_fh	old_root;		/* 1 */
31 	int		flags;			/* 1 */
32 	int		rsize;			/* 1 */
33 	int		wsize;			/* 1 */
34 	int		timeo;			/* 1 */
35 	int		retrans;		/* 1 */
36 	int		acregmin;		/* 1 */
37 	int		acregmax;		/* 1 */
38 	int		acdirmin;		/* 1 */
39 	int		acdirmax;		/* 1 */
40 	struct sockaddr_in addr;		/* 1 */
41 	char		hostname[NFS_MAXNAMLEN + 1];		/* 1 */
42 	int		namlen;			/* 2 */
43 	unsigned int	bsize;			/* 3 */
44 	struct nfs3_fh	root;			/* 4 */
45 	int		pseudoflavor;		/* 5 */
46 	char		context[NFS_MAX_CONTEXT_LEN + 1];	/* 6 */
47 };
48 
49 /* bits in the flags field visible to user space */
50 
51 #define NFS_MOUNT_SOFT		0x0001	/* 1 */
52 #define NFS_MOUNT_INTR		0x0002	/* 1 */ /* now unused, but ABI */
53 #define NFS_MOUNT_SECURE	0x0004	/* 1 */
54 #define NFS_MOUNT_POSIX		0x0008	/* 1 */
55 #define NFS_MOUNT_NOCTO		0x0010	/* 1 */
56 #define NFS_MOUNT_NOAC		0x0020	/* 1 */
57 #define NFS_MOUNT_TCP		0x0040	/* 2 */
58 #define NFS_MOUNT_VER3		0x0080	/* 3 */
59 #define NFS_MOUNT_KERBEROS	0x0100	/* 3 */
60 #define NFS_MOUNT_NONLM		0x0200	/* 3 */
61 #define NFS_MOUNT_BROKEN_SUID	0x0400	/* 4 */
62 #define NFS_MOUNT_NOACL		0x0800	/* 4 */
63 #define NFS_MOUNT_STRICTLOCK	0x1000	/* reserved for NFSv4 */
64 #define NFS_MOUNT_SECFLAVOUR	0x2000	/* 5 non-text parsed mount data only */
65 #define NFS_MOUNT_NORDIRPLUS	0x4000	/* 5 */
66 #define NFS_MOUNT_UNSHARED	0x8000	/* 5 */
67 #define NFS_MOUNT_FLAGMASK	0xFFFF
68 
69 /* The following are for internal use only */
70 #define NFS_MOUNT_LOOKUP_CACHE_NONEG	0x10000
71 #define NFS_MOUNT_LOOKUP_CACHE_NONE	0x20000
72 #define NFS_MOUNT_NORESVPORT		0x40000
73 #define NFS_MOUNT_LEGACY_INTERFACE	0x80000
74 
75 #define NFS_MOUNT_LOCAL_FLOCK	0x100000
76 #define NFS_MOUNT_LOCAL_FCNTL	0x200000
77 
78 #endif
79