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1/*
2 * include/linux/nfsd/syscall.h
3 *
4 * This file holds all declarations for the knfsd syscall interface.
5 *
6 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
7 */
8
9#ifndef NFSD_SYSCALL_H
10#define NFSD_SYSCALL_H
11
12#include <asm/types.h>
13#ifdef __KERNEL__
14# include <linux/config.h>
15# include <linux/types.h>
16# include <linux/in.h>
17#endif
18#include <linux/posix_types.h>
19#include <linux/nfsd/const.h>
20#include <linux/nfsd/export.h>
21#include <linux/nfsd/nfsfh.h>
22#include <linux/nfsd/auth.h>
23
24/*
25 * Version of the syscall interface
26 */
27#define NFSCTL_VERSION 0x0201
28
29/*
30 * These are the commands understood by nfsctl().
31 */
32#define NFSCTL_SVC 0 /* This is a server process. */
33#define NFSCTL_ADDCLIENT 1 /* Add an NFS client. */
34#define NFSCTL_DELCLIENT 2 /* Remove an NFS client. */
35#define NFSCTL_EXPORT 3 /* export a file system. */
36#define NFSCTL_UNEXPORT 4 /* unexport a file system. */
37/*#define NFSCTL_UGIDUPDATE 5 / * update a client's uid/gid map. DISCARDED */
38/*#define NFSCTL_GETFH 6 / * get an fh by ino DISCARDED */
39#define NFSCTL_GETFD 7 /* get an fh by path (used by mountd) */
40#define NFSCTL_GETFS 8 /* get an fh by path with max FH len */
41
42/* SVC */
43struct nfsctl_svc {
44 unsigned short svc_port;
45 int svc_nthreads;
46};
47
48/* ADDCLIENT/DELCLIENT */
49struct nfsctl_client {
50 char cl_ident[NFSCLNT_IDMAX+1];
51 int cl_naddr;
52 struct in_addr cl_addrlist[NFSCLNT_ADDRMAX];
53 int cl_fhkeytype;
54 int cl_fhkeylen;
55 unsigned char cl_fhkey[NFSCLNT_KEYMAX];
56};
57
58/* EXPORT/UNEXPORT */
59struct nfsctl_export {
60 char ex_client[NFSCLNT_IDMAX+1];
61 char ex_path[NFS_MAXPATHLEN+1];
62 __kernel_old_dev_t ex_dev;
63 __kernel_ino_t ex_ino;
64 int ex_flags;
65 __kernel_uid_t ex_anon_uid;
66 __kernel_gid_t ex_anon_gid;
67};
68
69/* GETFD */
70struct nfsctl_fdparm {
71 struct sockaddr gd_addr;
72 char gd_path[NFS_MAXPATHLEN+1];
73 int gd_version;
74};
75
76/* GETFS - GET Filehandle with Size */
77struct nfsctl_fsparm {
78 struct sockaddr gd_addr;
79 char gd_path[NFS_MAXPATHLEN+1];
80 int gd_maxlen;
81};
82
83/*
84 * This is the argument union.
85 */
86struct nfsctl_arg {
87 int ca_version; /* safeguard */
88 union {
89 struct nfsctl_svc u_svc;
90 struct nfsctl_client u_client;
91 struct nfsctl_export u_export;
92 struct nfsctl_fdparm u_getfd;
93 struct nfsctl_fsparm u_getfs;
94 /*
95 * The following dummy member is needed to preserve binary compatibility
96 * on platforms where alignof(void*)>alignof(int). It's needed because
97 * this union used to contain a member (u_umap) which contained a
98 * pointer.
99 */
100 void *u_ptr;
101 } u;
102#define ca_svc u.u_svc
103#define ca_client u.u_client
104#define ca_export u.u_export
105#define ca_getfd u.u_getfd
106#define ca_getfs u.u_getfs
107};
108
109union nfsctl_res {
110 __u8 cr_getfh[NFS_FHSIZE];
111 struct knfsd_fh cr_getfs;
112};
113
114#ifdef __KERNEL__
115/*
116 * Kernel syscall implementation.
117 */
118extern int exp_addclient(struct nfsctl_client *ncp);
119extern int exp_delclient(struct nfsctl_client *ncp);
120extern int exp_export(struct nfsctl_export *nxp);
121extern int exp_unexport(struct nfsctl_export *nxp);
122
123#endif /* __KERNEL__ */
124
125#endif /* NFSD_SYSCALL_H */