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>
10 #define NFSD_SYSCALL_H
12 #include <asm/types.h>
14 # include <linux/config.h>
15 # include <linux/types.h>
16 # include <linux/in.h>
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>
25 * Version of the syscall interface
27 #define NFSCTL_VERSION 0x0201
30 * These are the commands understood by nfsctl().
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 */
43 * Macros used to set version and protocol
45 #define NFSCTL_VERSET(_cltbits, _v) ((_cltbits) |= (1 << (_v)))
46 #define NFSCTL_VERUNSET(_cltbits, _v) ((_cltbits) &= ~(1 << (_v)))
47 #define NFSCTL_VERISSET(_cltbits, _v) ((_cltbits) & (1 << (_v)))
49 #if defined(CONFIG_NFSD_V4)
50 #define NFSCTL_VERALL (0x1c /* 0b011100 */)
51 #elif defined(CONFIG_NFSD_V3)
52 #define NFSCTL_VERALL (0x0c /* 0b001100 */)
54 #define NFSCTL_VERALL (0x04 /* 0b000100 */)
57 #define NFSCTL_UDPSET(_cltbits) ((_cltbits) |= (1 << (17 - 1)))
58 #define NFSCTL_UDPUNSET(_cltbits) ((_cltbits) &= ~(1 << (17 - 1)))
59 #define NFSCTL_UDPISSET(_cltbits) ((_cltbits) & (1 << (17 - 1)))
61 #define NFSCTL_TCPSET(_cltbits) ((_cltbits) |= (1 << (18 - 1)))
62 #define NFSCTL_TCPUNSET(_cltbits) ((_cltbits) &= ~(1 << (18 - 1)))
63 #define NFSCTL_TCPISSET(_cltbits) ((_cltbits) & (1 << (18 - 1)))
68 unsigned short svc_port;
72 /* ADDCLIENT/DELCLIENT */
73 struct nfsctl_client {
74 char cl_ident[NFSCLNT_IDMAX+1];
76 struct in_addr cl_addrlist[NFSCLNT_ADDRMAX];
79 unsigned char cl_fhkey[NFSCLNT_KEYMAX];
83 struct nfsctl_export {
84 char ex_client[NFSCLNT_IDMAX+1];
85 char ex_path[NFS_MAXPATHLEN+1];
86 __kernel_old_dev_t ex_dev;
87 __kernel_ino_t ex_ino;
89 __kernel_uid_t ex_anon_uid;
90 __kernel_gid_t ex_anon_gid;
94 struct nfsctl_fdparm {
95 struct sockaddr gd_addr;
96 char gd_path[NFS_MAXPATHLEN+1];
100 /* GETFS - GET Filehandle with Size */
101 struct nfsctl_fsparm {
102 struct sockaddr gd_addr;
103 char gd_path[NFS_MAXPATHLEN+1];
108 * This is the argument union.
111 int ca_version; /* safeguard */
113 struct nfsctl_svc u_svc;
114 struct nfsctl_client u_client;
115 struct nfsctl_export u_export;
116 struct nfsctl_fdparm u_getfd;
117 struct nfsctl_fsparm u_getfs;
119 * The following dummy member is needed to preserve binary compatibility
120 * on platforms where alignof(void*)>alignof(int). It's needed because
121 * this union used to contain a member (u_umap) which contained a
126 #define ca_svc u.u_svc
127 #define ca_client u.u_client
128 #define ca_export u.u_export
129 #define ca_getfd u.u_getfd
130 #define ca_getfs u.u_getfs
134 __u8 cr_getfh[NFS_FHSIZE];
135 struct knfsd_fh cr_getfs;
140 * Kernel syscall implementation.
142 extern int exp_addclient(struct nfsctl_client *ncp);
143 extern int exp_delclient(struct nfsctl_client *ncp);
144 extern int exp_export(struct nfsctl_export *nxp);
145 extern int exp_unexport(struct nfsctl_export *nxp);
147 extern int nfsd_port;
148 extern unsigned int nfsd_versbits, nfsd_portbits;
150 #endif /* __KERNEL__ */
152 #endif /* NFSD_SYSCALL_H */