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