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