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