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[linux-2.6/linux-acpi-2.6.git] / include / linux / nfsd / syscall.h
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1 /*
2 * include/linux/nfsd/syscall.h
4 * This file holds all declarations for the knfsd syscall interface.
6 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
7 */
9 #ifndef NFSD_SYSCALL_H
10 #define NFSD_SYSCALL_H
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>
22 * Version of the syscall interface
24 #define NFSCTL_VERSION 0x0201
27 * These are the commands understood by nfsctl().
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 */
39 /* SVC */
40 struct nfsctl_svc {
41 unsigned short svc_port;
42 int svc_nthreads;
45 /* ADDCLIENT/DELCLIENT */
46 struct 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];
55 /* EXPORT/UNEXPORT */
56 struct 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;
66 /* GETFD */
67 struct nfsctl_fdparm {
68 struct sockaddr gd_addr;
69 char gd_path[NFS_MAXPATHLEN+1];
70 int gd_version;
73 /* GETFS - GET Filehandle with Size */
74 struct nfsctl_fsparm {
75 struct sockaddr gd_addr;
76 char gd_path[NFS_MAXPATHLEN+1];
77 int gd_maxlen;
81 * This is the argument union.
83 struct 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;
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.
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
106 union nfsctl_res {
107 __u8 cr_getfh[NFS_FHSIZE];
108 struct knfsd_fh cr_getfs;
111 #ifdef __KERNEL__
113 * Kernel syscall implementation.
115 extern int exp_addclient(struct nfsctl_client *ncp);
116 extern int exp_delclient(struct nfsctl_client *ncp);
117 extern int exp_export(struct nfsctl_export *nxp);
118 extern int exp_unexport(struct nfsctl_export *nxp);
120 #endif /* __KERNEL__ */
122 #endif /* NFSD_SYSCALL_H */