summaryrefslogtreecommitdiffstats
path: root/include/linux/nfsd/syscall.h
blob: 1d42ec550e2f055e1023f693bcd56b29a50c5c5e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
/*
 * include/linux/nfsd/syscall.h
 *
 * This file holds all declarations for the knfsd syscall interface.
 *
 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
 */

#ifndef NFSD_SYSCALL_H
#define NFSD_SYSCALL_H

#include <asm/types.h>
#ifdef __KERNEL__
# include <linux/config.h>
# include <linux/types.h>
# include <linux/in.h>
#endif 
#include <linux/posix_types.h>
#include <linux/nfsd/const.h>
#include <linux/nfsd/export.h>
#include <linux/nfsd/nfsfh.h>
#include <linux/nfsd/auth.h>

/*
 * Version of the syscall interface
 */
#define NFSCTL_VERSION		0x0201

/*
 * These are the commands understood by nfsctl().
 */
#define NFSCTL_SVC		0	/* This is a server process. */
#define NFSCTL_ADDCLIENT	1	/* Add an NFS client. */
#define NFSCTL_DELCLIENT	2	/* Remove an NFS client. */
#define NFSCTL_EXPORT		3	/* export a file system. */
#define NFSCTL_UNEXPORT		4	/* unexport a file system. */
#define NFSCTL_UGIDUPDATE	5	/* update a client's uid/gid map. */
#define NFSCTL_GETFH		6	/* get an fh by ino (used by mountd) */
#define NFSCTL_GETFD		7	/* get an fh by path (used by mountd) */

/* SVC */
struct nfsctl_svc {
	unsigned short		svc_port;
	int			svc_nthreads;
};

/* ADDCLIENT/DELCLIENT */
struct nfsctl_client {
	char			cl_ident[NFSCLNT_IDMAX+1];
	int			cl_naddr;
	struct in_addr		cl_addrlist[NFSCLNT_ADDRMAX];
	int			cl_fhkeytype;
	int			cl_fhkeylen;
	unsigned char		cl_fhkey[NFSCLNT_KEYMAX];
};

/* EXPORT/UNEXPORT */
struct nfsctl_export {
	char			ex_client[NFSCLNT_IDMAX+1];
	char			ex_path[NFS_MAXPATHLEN+1];
	__kernel_dev_t		ex_dev;
	__kernel_ino_t		ex_ino;
	int			ex_flags;
	__kernel_uid_t		ex_anon_uid;
	__kernel_gid_t		ex_anon_gid;
};

/* UGIDUPDATE */
struct nfsctl_uidmap {
	char *			ug_ident;
	__kernel_uid_t		ug_uidbase;
	int			ug_uidlen;
	__kernel_uid_t *	ug_udimap;
	__kernel_gid_t		ug_gidbase;
	int			ug_gidlen;
	__kernel_gid_t *	ug_gdimap;
};

/* GETFH */
struct nfsctl_fhparm {
	struct sockaddr		gf_addr;
	__kernel_dev_t		gf_dev;
	__kernel_ino_t		gf_ino;
	int			gf_version;
};

/* GETFD */
struct nfsctl_fdparm {
	struct sockaddr		gd_addr;
	char			gd_path[NFS_MAXPATHLEN+1];
	int			gd_version;
};

/*
 * This is the argument union.
 */
struct nfsctl_arg {
	int			ca_version;	/* safeguard */
	union {
		struct nfsctl_svc	u_svc;
		struct nfsctl_client	u_client;
		struct nfsctl_export	u_export;
		struct nfsctl_uidmap	u_umap;
		struct nfsctl_fhparm	u_getfh;
		struct nfsctl_fdparm	u_getfd;
		unsigned int		u_debug;
	} u;
#define ca_svc		u.u_svc
#define ca_client	u.u_client
#define ca_export	u.u_export
#define ca_umap		u.u_umap
#define ca_getfh	u.u_getfh
#define ca_getfd	u.u_getfd
#define ca_authd	u.u_authd
#define ca_debug	u.u_debug
};

union nfsctl_res {
	struct knfs_fh		cr_getfh;
	unsigned int		cr_debug;
};

#ifdef __KERNEL__
/*
 * Kernel syscall implementation.
 */
#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
extern asmlinkage int	sys_nfsservctl(int, void *, void *);
#else
#define sys_nfsservctl		sys_ni_syscall
#endif
extern int		exp_addclient(struct nfsctl_client *ncp);
extern int		exp_delclient(struct nfsctl_client *ncp);
extern int		exp_export(struct nfsctl_export *nxp);
extern int		exp_unexport(struct nfsctl_export *nxp);

#endif /* __KERNEL__ */

#endif /* NFSD_SYSCALL_H */