contrib/amd/hlfsd/nfs_prot_svc.c

   1 /*
   2  * Copyright (c) 1997-1999 Erez Zadok
   3  * Copyright (c) 1989 Jan-Simon Pendry
   4  * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
   5  * Copyright (c) 1989 The Regents of the University of California.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software contributed to Berkeley by
   9  * Jan-Simon Pendry at Imperial College, London.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgment:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  *
  39  *      %W% (Berkeley) %G%
  40  *
  41  * $Id: nfs_prot_svc.c,v 1.3 1999/01/13 23:31:19 ezk Exp $
  42  *
  43  */
  44
  45 #ifdef HAVE_CONFIG_H
  46 # include <config.h>
  47 #endif /* HAVE_CONFIG_H */
  48 #include <am_defs.h>
  49 #include <hlfsd.h>
  50
  51 /* EXTERNAL FUNCTIONS */
  52 extern voidp nfsproc_null_2_svc(voidp, struct svc_req *);
  53 extern nfsattrstat * nfsproc_getattr_2_svc(am_nfs_fh *, struct svc_req *);
  54 extern nfsattrstat * nfsproc_setattr_2_svc(nfssattrargs *, struct svc_req *);
  55 extern voidp nfsproc_root_2_svc(voidp, struct svc_req *);
  56 extern nfsdiropres * nfsproc_lookup_2_svc(nfsdiropargs *, struct svc_req *);
  57 extern nfsreadlinkres * nfsproc_readlink_2_svc(am_nfs_fh *, struct svc_req *);
  58 extern nfsreadres * nfsproc_read_2_svc(nfsreadargs *, struct svc_req *);
  59 extern voidp nfsproc_writecache_2_svc(voidp, struct svc_req *);
  60 extern nfsattrstat * nfsproc_write_2_svc(nfswriteargs *, struct svc_req *);
  61 extern nfsdiropres * nfsproc_create_2_svc(nfscreateargs *, struct svc_req *);
  62 extern nfsstat * nfsproc_remove_2_svc(nfsdiropargs *, struct svc_req *);
  63 extern nfsstat * nfsproc_rename_2_svc(nfsrenameargs *, struct svc_req *);
  64 extern nfsstat * nfsproc_link_2_svc(nfslinkargs *, struct svc_req *);
  65 extern nfsstat * nfsproc_symlink_2_svc(nfssymlinkargs *, struct svc_req *);
  66 extern nfsdiropres * nfsproc_mkdir_2_svc(nfscreateargs *, struct svc_req *);
  67 extern nfsstat * nfsproc_rmdir_2_svc(nfsdiropargs *, struct svc_req *);
  68 extern nfsreaddirres * nfsproc_readdir_2_svc(nfsreaddirargs *, struct svc_req *);
  69 extern nfsstatfsres * nfsproc_statfs_2_svc(am_nfs_fh *, struct svc_req *);
  70
  71 /* GLOBALS */
  72 SVCXPRT *nfs_program_2_transp;
  73
  74 /* TYPEDEFS */
  75 typedef char *(*nfssvcproc_t)(voidp, struct svc_req *);
  76
  77
  78 void
  79 nfs_program_2(struct svc_req *rqstp, SVCXPRT *transp)
  80 {
  81   union {
  82     am_nfs_fh           nfsproc_getattr_2_arg;
  83     nfssattrargs        nfsproc_setattr_2_arg;
  84     nfsdiropargs        nfsproc_lookup_2_arg;
  85     am_nfs_fh           nfsproc_readlink_2_arg;
  86     nfsreadargs         nfsproc_read_2_arg;
  87     nfswriteargs        nfsproc_write_2_arg;
  88     nfscreateargs       nfsproc_create_2_arg;
  89     nfsdiropargs        nfsproc_remove_2_arg;
  90     nfsrenameargs       nfsproc_rename_2_arg;
  91     nfslinkargs         nfsproc_link_2_arg;
  92     nfssymlinkargs      nfsproc_symlink_2_arg;
  93     nfscreateargs       nfsproc_mkdir_2_arg;
  94     nfsdiropargs        nfsproc_rmdir_2_arg;
  95     nfsreaddirargs      nfsproc_readdir_2_arg;
  96     am_nfs_fh           nfsproc_statfs_2_arg;
  97   } argument;
  98   char *result;
  99   xdrproc_t xdr_argument, xdr_result;
 100   nfssvcproc_t local;
 101
 102   nfs_program_2_transp = NULL;
 103
 104   switch (rqstp->rq_proc) {
 105
 106   case NFSPROC_NULL:
 107     xdr_argument = (xdrproc_t) xdr_void;
 108     xdr_result = (xdrproc_t) xdr_void;
 109     local = (nfssvcproc_t) nfsproc_null_2_svc;
 110     break;
 111
 112   case NFSPROC_GETATTR:
 113     xdr_argument = (xdrproc_t) xdr_nfs_fh;
 114     xdr_result = (xdrproc_t) xdr_attrstat;
 115     local = (nfssvcproc_t) nfsproc_getattr_2_svc;
 116     break;
 117
 118   case NFSPROC_SETATTR:
 119     xdr_argument = (xdrproc_t) xdr_sattrargs;
 120     xdr_result = (xdrproc_t) xdr_attrstat;
 121     local = (nfssvcproc_t) nfsproc_setattr_2_svc;
 122     break;
 123
 124   case NFSPROC_ROOT:
 125     xdr_argument = (xdrproc_t) xdr_void;
 126     xdr_result = (xdrproc_t) xdr_void;
 127     local = (nfssvcproc_t) nfsproc_root_2_svc;
 128     break;
 129
 130   case NFSPROC_LOOKUP:
 131     xdr_argument = (xdrproc_t) xdr_diropargs;
 132     xdr_result = (xdrproc_t) xdr_diropres;
 133     local = (nfssvcproc_t) nfsproc_lookup_2_svc;
 134     /*
 135      * Cheap way to pass transp down to afs_lookuppn so it can
 136      * be stored in the am_node structure and later used for
 137      * quick_reply().
 138      */
 139     nfs_program_2_transp = transp;
 140     break;
 141
 142   case NFSPROC_READLINK:
 143     xdr_argument = (xdrproc_t) xdr_nfs_fh;
 144     xdr_result = (xdrproc_t) xdr_readlinkres;
 145     local = (nfssvcproc_t) nfsproc_readlink_2_svc;
 146     break;
 147
 148   case NFSPROC_READ:
 149     xdr_argument = (xdrproc_t) xdr_readargs;
 150     xdr_result = (xdrproc_t) xdr_readres;
 151     local = (nfssvcproc_t) nfsproc_read_2_svc;
 152     break;
 153
 154   case NFSPROC_WRITECACHE:
 155     xdr_argument = (xdrproc_t) xdr_void;
 156     xdr_result = (xdrproc_t) xdr_void;
 157     local = (nfssvcproc_t) nfsproc_writecache_2_svc;
 158     break;
 159
 160   case NFSPROC_WRITE:
 161     xdr_argument = (xdrproc_t) xdr_writeargs;
 162     xdr_result = (xdrproc_t) xdr_attrstat;
 163     local = (nfssvcproc_t) nfsproc_write_2_svc;
 164     break;
 165
 166   case NFSPROC_CREATE:
 167     xdr_argument = (xdrproc_t) xdr_createargs;
 168     xdr_result = (xdrproc_t) xdr_diropres;
 169     local = (nfssvcproc_t) nfsproc_create_2_svc;
 170     break;
 171
 172   case NFSPROC_REMOVE:
 173     xdr_argument = (xdrproc_t) xdr_diropargs;
 174     xdr_result = (xdrproc_t) xdr_nfsstat;
 175     local = (nfssvcproc_t) nfsproc_remove_2_svc;
 176     break;
 177
 178   case NFSPROC_RENAME:
 179     xdr_argument = (xdrproc_t) xdr_renameargs;
 180     xdr_result = (xdrproc_t) xdr_nfsstat;
 181     local = (nfssvcproc_t) nfsproc_rename_2_svc;
 182     break;
 183
 184   case NFSPROC_LINK:
 185     xdr_argument = (xdrproc_t) xdr_linkargs;
 186     xdr_result = (xdrproc_t) xdr_nfsstat;
 187     local = (nfssvcproc_t) nfsproc_link_2_svc;
 188     break;
 189
 190   case NFSPROC_SYMLINK:
 191     xdr_argument = (xdrproc_t) xdr_symlinkargs;
 192     xdr_result = (xdrproc_t) xdr_nfsstat;
 193     local = (nfssvcproc_t) nfsproc_symlink_2_svc;
 194     break;
 195
 196   case NFSPROC_MKDIR:
 197     xdr_argument = (xdrproc_t) xdr_createargs;
 198     xdr_result = (xdrproc_t) xdr_diropres;
 199     local = (nfssvcproc_t) nfsproc_mkdir_2_svc;
 200     break;
 201
 202   case NFSPROC_RMDIR:
 203     xdr_argument = (xdrproc_t) xdr_diropargs;
 204     xdr_result = (xdrproc_t) xdr_nfsstat;
 205     local = (nfssvcproc_t) nfsproc_rmdir_2_svc;
 206     break;
 207
 208   case NFSPROC_READDIR:
 209     xdr_argument = (xdrproc_t) xdr_readdirargs;
 210     xdr_result = (xdrproc_t) xdr_readdirres;
 211     local = (nfssvcproc_t) nfsproc_readdir_2_svc;
 212     break;
 213
 214   case NFSPROC_STATFS:
 215     xdr_argument = (xdrproc_t) xdr_nfs_fh;
 216     xdr_result = (xdrproc_t) xdr_statfsres;
 217     local = (nfssvcproc_t) nfsproc_statfs_2_svc;
 218     break;
 219
 220   default:
 221     svcerr_noproc(transp);
 222     return;
 223   }
 224
 225   memset((char *) &argument, 0, sizeof(argument));
 226   if (!svc_getargs(transp,
 227                    (XDRPROC_T_TYPE) xdr_argument,
 228                    (SVC_IN_ARG_TYPE) &argument)) {
 229     plog(XLOG_ERROR,
 230          "NFS xdr decode failed for %d %d %d",
 231          (int) rqstp->rq_prog, (int) rqstp->rq_vers, (int) rqstp->rq_proc);
 232     svcerr_decode(transp);
 233     return;
 234   }
 235   result = (*local) (&argument, rqstp);
 236
 237   nfs_program_2_transp = NULL;
 238
 239   if (result != NULL && !svc_sendreply(transp,
 240                                        (XDRPROC_T_TYPE) xdr_result,
 241                                        result)) {
 242     svcerr_systemerr(transp);
 243   }
 244   if (!svc_freeargs(transp,
 245                     (XDRPROC_T_TYPE) xdr_argument,
 246                     (SVC_IN_ARG_TYPE) & argument)) {
 247     plog(XLOG_FATAL, "unable to free rpc arguments in nfs_program_2");
 248     going_down(1);
 249   }
 250 }