external/bsd/am-utils/dist/hlfsd/nfs_prot_svc.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 1997-2009 Erez Zadok
   5  * Copyright (c) 1989 Jan-Simon Pendry
   6  * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
   7  * Copyright (c) 1989 The Regents of the University of California.
   8  * All rights reserved.
   9  *
  10  * This code is derived from software contributed to Berkeley by
  11  * Jan-Simon Pendry at Imperial College, London.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgment:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  *
  41  *
  42  * File: am-utils/hlfsd/nfs_prot_svc.c
  43  *
  44  */
  45
  46 #ifdef HAVE_CONFIG_H
  47 # include <config.h>
  48 #endif /* HAVE_CONFIG_H */
  49 #include <am_defs.h>
  50 #include <hlfsd.h>
  51
  52 /* EXTERNAL FUNCTIONS */
  53 extern voidp nfsproc_null_2_svc(voidp, struct svc_req *);
  54 extern nfsattrstat *nfsproc_getattr_2_svc(am_nfs_fh *, struct svc_req *);
  55 extern nfsattrstat *nfsproc_setattr_2_svc(nfssattrargs *, struct svc_req *);
  56 extern voidp nfsproc_root_2_svc(voidp, struct svc_req *);
  57 extern nfsdiropres *nfsproc_lookup_2_svc(nfsdiropargs *, struct svc_req *);
  58 extern nfsreadlinkres *nfsproc_readlink_2_svc(am_nfs_fh *, struct svc_req *);
  59 extern nfsreadres *nfsproc_read_2_svc(nfsreadargs *, struct svc_req *);
  60 extern voidp nfsproc_writecache_2_svc(voidp, struct svc_req *);
  61 extern nfsattrstat *nfsproc_write_2_svc(nfswriteargs *, struct svc_req *);
  62 extern nfsdiropres *nfsproc_create_2_svc(nfscreateargs *, struct svc_req *);
  63 extern nfsstat *nfsproc_remove_2_svc(nfsdiropargs *, struct svc_req *);
  64 extern nfsstat *nfsproc_rename_2_svc(nfsrenameargs *, struct svc_req *);
  65 extern nfsstat *nfsproc_link_2_svc(nfslinkargs *, struct svc_req *);
  66 extern nfsstat *nfsproc_symlink_2_svc(nfssymlinkargs *, struct svc_req *);
  67 extern nfsdiropres *nfsproc_mkdir_2_svc(nfscreateargs *, struct svc_req *);
  68 extern nfsstat *nfsproc_rmdir_2_svc(nfsdiropargs *, struct svc_req *);
  69 extern nfsreaddirres *nfsproc_readdir_2_svc(nfsreaddirargs *, struct svc_req *);
  70 extern nfsstatfsres *nfsproc_statfs_2_svc(am_nfs_fh *, struct svc_req *);
  71
  72 /* GLOBALS */
  73 SVCXPRT *nfs_program_2_transp;
  74
  75 /* TYPEDEFS */
  76 typedef char *(*nfssvcproc_t)(voidp, struct svc_req *);
  77
  78
  79 void
  80 nfs_program_2(struct svc_req *rqstp, SVCXPRT *transp)
  81 {
  82   union {
  83     am_nfs_fh           nfsproc_getattr_2_arg;
  84     nfssattrargs        nfsproc_setattr_2_arg;
  85     nfsdiropargs        nfsproc_lookup_2_arg;
  86     am_nfs_fh           nfsproc_readlink_2_arg;
  87     nfsreadargs         nfsproc_read_2_arg;
  88     nfswriteargs        nfsproc_write_2_arg;
  89     nfscreateargs       nfsproc_create_2_arg;
  90     nfsdiropargs        nfsproc_remove_2_arg;
  91     nfsrenameargs       nfsproc_rename_2_arg;
  92     nfslinkargs         nfsproc_link_2_arg;
  93     nfssymlinkargs      nfsproc_symlink_2_arg;
  94     nfscreateargs       nfsproc_mkdir_2_arg;
  95     nfsdiropargs        nfsproc_rmdir_2_arg;
  96     nfsreaddirargs      nfsproc_readdir_2_arg;
  97     am_nfs_fh           nfsproc_statfs_2_arg;
  98   } argument;
  99   char *result;
 100   xdrproc_t xdr_argument, xdr_result;
 101   nfssvcproc_t local;
 102
 103   nfs_program_2_transp = NULL;
 104
 105   switch (rqstp->rq_proc) {
 106
 107   case NFSPROC_NULL:
 108     xdr_argument = (xdrproc_t) xdr_void;
 109     xdr_result = (xdrproc_t) xdr_void;
 110     local = (nfssvcproc_t) nfsproc_null_2_svc;
 111     break;
 112
 113   case NFSPROC_GETATTR:
 114     xdr_argument = (xdrproc_t) xdr_nfs_fh;
 115     xdr_result = (xdrproc_t) xdr_attrstat;
 116     local = (nfssvcproc_t) nfsproc_getattr_2_svc;
 117     break;
 118
 119   case NFSPROC_SETATTR:
 120     xdr_argument = (xdrproc_t) xdr_sattrargs;
 121     xdr_result = (xdrproc_t) xdr_attrstat;
 122     local = (nfssvcproc_t) nfsproc_setattr_2_svc;
 123     break;
 124
 125   case NFSPROC_ROOT:
 126     xdr_argument = (xdrproc_t) xdr_void;
 127     xdr_result = (xdrproc_t) xdr_void;
 128     local = (nfssvcproc_t) nfsproc_root_2_svc;
 129     break;
 130
 131   case NFSPROC_LOOKUP:
 132     xdr_argument = (xdrproc_t) xdr_diropargs;
 133     xdr_result = (xdrproc_t) xdr_diropres;
 134     local = (nfssvcproc_t) nfsproc_lookup_2_svc;
 135     /*
 136      * Cheap way to pass transp down to afs_lookuppn so it can
 137      * be stored in the am_node structure and later used for
 138      * quick_reply().
 139      */
 140     nfs_program_2_transp = transp;
 141     break;
 142
 143   case NFSPROC_READLINK:
 144     xdr_argument = (xdrproc_t) xdr_nfs_fh;
 145     xdr_result = (xdrproc_t) xdr_readlinkres;
 146     local = (nfssvcproc_t) nfsproc_readlink_2_svc;
 147     break;
 148
 149   case NFSPROC_READ:
 150     xdr_argument = (xdrproc_t) xdr_readargs;
 151     xdr_result = (xdrproc_t) xdr_readres;
 152     local = (nfssvcproc_t) nfsproc_read_2_svc;
 153     break;
 154
 155   case NFSPROC_WRITECACHE:
 156     xdr_argument = (xdrproc_t) xdr_void;
 157     xdr_result = (xdrproc_t) xdr_void;
 158     local = (nfssvcproc_t) nfsproc_writecache_2_svc;
 159     break;
 160
 161   case NFSPROC_WRITE:
 162     xdr_argument = (xdrproc_t) xdr_writeargs;
 163     xdr_result = (xdrproc_t) xdr_attrstat;
 164     local = (nfssvcproc_t) nfsproc_write_2_svc;
 165     break;
 166
 167   case NFSPROC_CREATE:
 168     xdr_argument = (xdrproc_t) xdr_createargs;
 169     xdr_result = (xdrproc_t) xdr_diropres;
 170     local = (nfssvcproc_t) nfsproc_create_2_svc;
 171     break;
 172
 173   case NFSPROC_REMOVE:
 174     xdr_argument = (xdrproc_t) xdr_diropargs;
 175     xdr_result = (xdrproc_t) xdr_nfsstat;
 176     local = (nfssvcproc_t) nfsproc_remove_2_svc;
 177     break;
 178
 179   case NFSPROC_RENAME:
 180     xdr_argument = (xdrproc_t) xdr_renameargs;
 181     xdr_result = (xdrproc_t) xdr_nfsstat;
 182     local = (nfssvcproc_t) nfsproc_rename_2_svc;
 183     break;
 184
 185   case NFSPROC_LINK:
 186     xdr_argument = (xdrproc_t) xdr_linkargs;
 187     xdr_result = (xdrproc_t) xdr_nfsstat;
 188     local = (nfssvcproc_t) nfsproc_link_2_svc;
 189     break;
 190
 191   case NFSPROC_SYMLINK:
 192     xdr_argument = (xdrproc_t) xdr_symlinkargs;
 193     xdr_result = (xdrproc_t) xdr_nfsstat;
 194     local = (nfssvcproc_t) nfsproc_symlink_2_svc;
 195     break;
 196
 197   case NFSPROC_MKDIR:
 198     xdr_argument = (xdrproc_t) xdr_createargs;
 199     xdr_result = (xdrproc_t) xdr_diropres;
 200     local = (nfssvcproc_t) nfsproc_mkdir_2_svc;
 201     break;
 202
 203   case NFSPROC_RMDIR:
 204     xdr_argument = (xdrproc_t) xdr_diropargs;
 205     xdr_result = (xdrproc_t) xdr_nfsstat;
 206     local = (nfssvcproc_t) nfsproc_rmdir_2_svc;
 207     break;
 208
 209   case NFSPROC_READDIR:
 210     xdr_argument = (xdrproc_t) xdr_readdirargs;
 211     xdr_result = (xdrproc_t) xdr_readdirres;
 212     local = (nfssvcproc_t) nfsproc_readdir_2_svc;
 213     break;
 214
 215   case NFSPROC_STATFS:
 216     xdr_argument = (xdrproc_t) xdr_nfs_fh;
 217     xdr_result = (xdrproc_t) xdr_statfsres;
 218     local = (nfssvcproc_t) nfsproc_statfs_2_svc;
 219     break;
 220
 221   default:
 222     svcerr_noproc(transp);
 223     return;
 224   }
 225
 226   memset((char *) &argument, 0, sizeof(argument));
 227   if (!svc_getargs(transp,
 228                    (XDRPROC_T_TYPE) xdr_argument,
 229                    (SVC_IN_ARG_TYPE) &argument)) {
 230     plog(XLOG_ERROR,
 231          "NFS xdr decode failed for %d %d %d",
 232          (int) rqstp->rq_prog, (int) rqstp->rq_vers, (int) rqstp->rq_proc);
 233     svcerr_decode(transp);
 234     return;
 235   }
 236   result = (*local) (&argument, rqstp);
 237
 238   nfs_program_2_transp = NULL;
 239
 240   if (result != NULL && !svc_sendreply(transp,
 241                                        (XDRPROC_T_TYPE) xdr_result,
 242                                        result)) {
 243     svcerr_systemerr(transp);
 244   }
 245   if (!svc_freeargs(transp,
 246                     (XDRPROC_T_TYPE) xdr_argument,
 247                     (SVC_IN_ARG_TYPE) & argument)) {
 248     plog(XLOG_FATAL, "unable to free rpc arguments in nfs_program_2");
 249     going_down(1);
 250   }
 251 }