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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * NFSv3 protocol definitions
 */
#ifndef _LINUX_NFS3_H
#define _LINUX_NFS3_H

#define NFS3_PORT	    2049
#define NFS3_MAXDATA	    32768
#define NFS3_MAXPATHLEN	    PATH_MAX
#define NFS3_MAXNAMLEN	    NAME_MAX
#define NFS3_MAXGROUPS	    16
#define NFS3_FHSIZE	    64
#define NFS3_COOKIESIZE	    4
#define NFS3_CREATEVERFSIZE 8
#define NFS3_COOKIEVERFSIZE 8
#define NFS3_WRITEVERFSIZE  8
#define NFS3_FIFO_DEV	    (-1)
#define NFS3MODE_FMT	    0170000
#define NFS3MODE_DIR	    0040000
#define NFS3MODE_CHR	    0020000
#define NFS3MODE_BLK	    0060000
#define NFS3MODE_REG	    0100000
#define NFS3MODE_LNK	    0120000
#define NFS3MODE_SOCK	    0140000
#define NFS3MODE_FIFO	    0010000

/* Flags for access() call */
#define NFS3_ACCESS_READ    0x0001
#define NFS3_ACCESS_LOOKUP  0x0002
#define NFS3_ACCESS_MODIFY  0x0004
#define NFS3_ACCESS_EXTEND  0x0008
#define NFS3_ACCESS_DELETE  0x0010
#define NFS3_ACCESS_EXECUTE 0x0020
#define NFS3_ACCESS_FULL    0x003f

/* Flags for create mode */
enum nfs3_createmode { NFS3_CREATE_UNCHECKED = 0, NFS3_CREATE_GUARDED = 1, NFS3_CREATE_EXCLUSIVE = 2 };

/* NFSv3 file system properties */
#define NFS3_FSF_LINK	     0x0001
#define NFS3_FSF_SYMLINK     0x0002
#define NFS3_FSF_HOMOGENEOUS 0x0008
#define NFS3_FSF_CANSETTIME  0x0010
/* Some shorthands. See fs/nfsd/nfs3proc.c */
#define NFS3_FSF_DEFAULT  0x001B
#define NFS3_FSF_BILLYBOY 0x0018
#define NFS3_FSF_READONLY 0x0008

enum nfs3_ftype {
	NF3NON = 0,
	NF3REG = 1,
	NF3DIR = 2,
	NF3BLK = 3,
	NF3CHR = 4,
	NF3LNK = 5,
	NF3SOCK = 6,
	NF3FIFO = 7, /* changed from NFSv2 (was 8) */
	NF3BAD = 8
};

enum nfs3_time_how {
	DONT_CHANGE = 0,
	SET_TO_SERVER_TIME = 1,
	SET_TO_CLIENT_TIME = 2,
};

struct nfs3_fh {
	unsigned short size;
	unsigned char data[NFS3_FHSIZE];
};

#define NFS3_VERSION	     3
#define NFS3PROC_NULL	     0
#define NFS3PROC_GETATTR     1
#define NFS3PROC_SETATTR     2
#define NFS3PROC_LOOKUP	     3
#define NFS3PROC_ACCESS	     4
#define NFS3PROC_READLINK    5
#define NFS3PROC_READ	     6
#define NFS3PROC_WRITE	     7
#define NFS3PROC_CREATE	     8
#define NFS3PROC_MKDIR	     9
#define NFS3PROC_SYMLINK     10
#define NFS3PROC_MKNOD	     11
#define NFS3PROC_REMOVE	     12
#define NFS3PROC_RMDIR	     13
#define NFS3PROC_RENAME	     14
#define NFS3PROC_LINK	     15
#define NFS3PROC_READDIR     16
#define NFS3PROC_READDIRPLUS 17
#define NFS3PROC_FSSTAT	     18
#define NFS3PROC_FSINFO	     19
#define NFS3PROC_PATHCONF    20
#define NFS3PROC_COMMIT	     21

#define NFS_MNT3_VERSION 3

#endif /* _LINUX_NFS3_H */