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