File: /usr/src/linux/include/linux/nfsd/syscall.h
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. */
38 #define NFSCTL_GETFH 6 /* get an fh by ino (used by mountd) */
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 */
43 struct nfsctl_svc {
44 unsigned short svc_port;
45 int svc_nthreads;
46 };
47
48 /* ADDCLIENT/DELCLIENT */
49 struct 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 */
59 struct nfsctl_export {
60 char ex_client[NFSCLNT_IDMAX+1];
61 char ex_path[NFS_MAXPATHLEN+1];
62 __kernel_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 /* UGIDUPDATE */
70 struct nfsctl_uidmap {
71 char * ug_ident;
72 __kernel_uid_t ug_uidbase;
73 int ug_uidlen;
74 __kernel_uid_t * ug_udimap;
75 __kernel_gid_t ug_gidbase;
76 int ug_gidlen;
77 __kernel_gid_t * ug_gdimap;
78 };
79
80 /* GETFH */
81 struct nfsctl_fhparm {
82 struct sockaddr gf_addr;
83 __kernel_dev_t gf_dev;
84 __kernel_ino_t gf_ino;
85 int gf_version;
86 };
87
88 /* GETFD */
89 struct nfsctl_fdparm {
90 struct sockaddr gd_addr;
91 char gd_path[NFS_MAXPATHLEN+1];
92 int gd_version;
93 };
94
95 /* GETFS - GET Filehandle with Size */
96 struct nfsctl_fsparm {
97 struct sockaddr gd_addr;
98 char gd_path[NFS_MAXPATHLEN+1];
99 int gd_maxlen;
100 };
101
102 /*
103 * This is the argument union.
104 */
105 struct nfsctl_arg {
106 int ca_version; /* safeguard */
107 union {
108 struct nfsctl_svc u_svc;
109 struct nfsctl_client u_client;
110 struct nfsctl_export u_export;
111 struct nfsctl_uidmap u_umap;
112 struct nfsctl_fhparm u_getfh;
113 struct nfsctl_fdparm u_getfd;
114 struct nfsctl_fsparm u_getfs;
115 } u;
116 #define ca_svc u.u_svc
117 #define ca_client u.u_client
118 #define ca_export u.u_export
119 #define ca_umap u.u_umap
120 #define ca_getfh u.u_getfh
121 #define ca_getfd u.u_getfd
122 #define ca_getfs u.u_getfs
123 #define ca_authd u.u_authd
124 };
125
126 union nfsctl_res {
127 __u8 cr_getfh[NFS_FHSIZE];
128 struct knfsd_fh cr_getfs;
129 };
130
131 #ifdef __KERNEL__
132 /*
133 * Kernel syscall implementation.
134 */
135 #if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
136 extern asmlinkage long sys_nfsservctl(int, void *, void *);
137 #else
138 #define sys_nfsservctl sys_ni_syscall
139 #endif
140 extern int exp_addclient(struct nfsctl_client *ncp);
141 extern int exp_delclient(struct nfsctl_client *ncp);
142 extern int exp_export(struct nfsctl_export *nxp);
143 extern int exp_unexport(struct nfsctl_export *nxp);
144
145 #endif /* __KERNEL__ */
146
147 #endif /* NFSD_SYSCALL_H */
148