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 */
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_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 */
70 struct 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 */
77 struct 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 */
86 struct 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
109 union 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 */
118 extern int exp_addclient(struct nfsctl_client *ncp);
119 extern int exp_delclient(struct nfsctl_client *ncp);
120 extern int exp_export(struct nfsctl_export *nxp);
121 extern int exp_unexport(struct nfsctl_export *nxp);
122
123 #endif /* __KERNEL__ */
124
125 #endif /* NFSD_SYSCALL_H */
126
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