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  #endif
70