external/bsd/am-utils/dist/conf/mount/mount_aix3.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 1997-2009 Erez Zadok
   5  * Copyright (c) 1990 Jan-Simon Pendry
   6  * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
   7  * Copyright (c) 1990 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/conf/mount/mount_aix3.c
  43  *
  44  */
  45
  46 /*
  47  * AIX 3.x/4.x Mount helper
  48  */
  49
  50 #ifdef HAVE_CONFIG_H
  51 # include <config.h>
  52 #endif /* HAVE_CONFIG_H */
  53 #include <am_defs.h>
  54 #include <amu.h>
  55
  56 #define VMT_ROUNDUP(len) (4 * ((len + 3) / 4))
  57 #define VMT_ASSIGN(vp, idx, data, size) \
  58         vp->vmt_data[idx].vmt_off = p - (char *) vp; \
  59         vp->vmt_data[idx].vmt_size = size; \
  60         memmove(p, data, size); \
  61         p += VMT_ROUNDUP(size);
  62
  63 /* missing external definitions from AIX's headers */
  64 extern int vmount(struct vmount *vmount, int size);
  65
  66
  67 static int
  68 aix3_mkvp(char *p, int gfstype, int flags, char *object, char *stub, char *host, char *info, int info_size, char *args)
  69 {
  70   struct vmount *vp = (struct vmount *) p;
  71
  72   memset((voidp) vp, 0, sizeof(*vp));
  73   /*
  74    * Fill in standard fields
  75    */
  76   vp->vmt_revision = VMT_REVISION;
  77   vp->vmt_flags = flags;
  78   vp->vmt_gfstype = gfstype;
  79
  80   /*
  81    * Fill in all variable length data
  82    */
  83   p += sizeof(*vp);
  84
  85   VMT_ASSIGN(vp, VMT_OBJECT, object, strlen(object) + 1);
  86   VMT_ASSIGN(vp, VMT_STUB, stub, strlen(stub) + 1);
  87   VMT_ASSIGN(vp, VMT_HOST, host, strlen(host) + 1);
  88   VMT_ASSIGN(vp, VMT_HOSTNAME, host, strlen(host) + 1);
  89   VMT_ASSIGN(vp, VMT_INFO, info, info_size);
  90   VMT_ASSIGN(vp, VMT_ARGS, args, strlen(args) + 1);
  91
  92   /*
  93    * Return length
  94    */
  95   return vp->vmt_length = p - (char *) vp;
  96 }
  97
  98
  99 /*
 100  * Map from conventional mount arguments
 101  * to AIX 3-style arguments.
 102  */
 103 int
 104 mount_aix3(char *fsname, char *dir, int flags, int type, void *data, char *mnt_opts)
 105 {
 106   char buf[4096];
 107   int size, ret;
 108   int real_size = sizeof(nfs_args_t); /* size passed to aix3_mkvp() */
 109   char *real_args = data;       /* args passed to aix3_mkvp() */
 110   char *host, *rfs, *idx;
 111   int aix_type = type;
 112 #ifdef HAVE_FS_NFS3
 113   struct nfs_args v2args;
 114   nfs_args_t *v3args = (nfs_args_t *) data;
 115 #ifdef MOUNT_TYPE_NFS3_BIS
 116   struct aix4_nfs_args_bis v3args_bis;
 117 #endif /* MOUNT_TYPE_NFS3_BIS */
 118 #endif /* HAVE_FS_NFS3 */
 119
 120 #ifdef DEBUG
 121   dlog("mount_aix3: fsname %s, dir %s, type %d", fsname, dir, type);
 122 #endif /* DEBUG */
 123
 124 #ifdef MOUNT_TYPE_NFS3_BIS
 125  retry_ibm_buggy_service_pack:
 126 #endif /* MOUNT_TYPE_NFS3_BIS */
 127   switch (aix_type) {
 128
 129   case MOUNT_TYPE_NFS:
 130
 131 #ifdef HAVE_FS_NFS3
 132     /*
 133      * This is tricky.  If we have v3 support, but this nfs mount is v2,
 134      * then I must copy the arguments from the v3 nfs_args to the v2 one.
 135      */
 136     memmove((voidp) &v2args.addr, (voidp) &v3args->addr, sizeof(struct sockaddr_in));
 137     v2args.hostname = v3args->hostname;
 138     v2args.netname = v3args->netname;
 139     memmove((voidp) v2args.fh, v3args->fh, FHSIZE);
 140     v2args.flags = v3args->flags;
 141     v2args.wsize = v3args->wsize;
 142     v2args.rsize = v3args->rsize;
 143     v2args.timeo = v3args->timeo;
 144     v2args.retrans = v3args->retrans;
 145     v2args.acregmin = v3args->acregmin;
 146     v2args.acregmax = v3args->acregmax;
 147     v2args.acdirmin = v3args->acdirmin;
 148     v2args.acdirmax = v3args->acdirmax;
 149     v2args.pathconf = v3args->pathconf;
 150
 151     /* now set real_* stuff */
 152     real_size = sizeof(v2args);
 153     real_args = (char *) &v2args;
 154
 155   case MOUNT_TYPE_NFS3:
 156 #ifdef MOUNT_TYPE_NFS3_BIS
 157   case MOUNT_TYPE_NFS3_BIS:
 158     /* just fall through */
 159     if (aix_type == MOUNT_TYPE_NFS3_BIS) {
 160       dlog("mount_aix3: creating alternate nfs3_args structure");
 161       memmove((voidp) &v3args_bis.addr, (voidp) &v3args->addr, sizeof(struct sockaddr_in));
 162       v3args_bis.syncaddr = v3args->syncaddr;
 163       v3args_bis.proto = v3args->proto;
 164       v3args_bis.hostname = v3args->hostname;
 165       v3args_bis.netname = v3args->netname;
 166       v3args_bis.fh = v3args->fh;
 167       v3args_bis.flags = v3args->flags;
 168       v3args_bis.wsize = v3args->wsize;
 169       v3args_bis.rsize = v3args->rsize;
 170       v3args_bis.timeo = v3args->timeo;
 171       v3args_bis.retrans = v3args->retrans;
 172       v3args_bis.acregmin = v3args->acregmin;
 173       v3args_bis.acregmax = v3args->acregmax;
 174       v3args_bis.acdirmin = v3args->acdirmin;
 175       v3args_bis.acdirmax = v3args->acdirmax;
 176       v3args_bis.pathconf = v3args->pathconf;
 177       v3args_bis.biods = v3args->biods;
 178       v3args_bis.numclust = v3args->numclust;
 179       /* now set real_* stuff */
 180       real_size = sizeof(v3args_bis);
 181       real_args = (char *) &v3args_bis;
 182     }
 183 #endif /* MOUNT_TYPE_NFS3_BIS */
 184 #endif /* HAVE_FS_NFS3 */
 185
 186     idx = strchr(fsname, ':');
 187     if (idx) {
 188       *idx = '\0';
 189       rfs = strdup(idx + 1);
 190       host = strdup(fsname);
 191       *idx = ':';
 192     } else {
 193       rfs = strdup(fsname);
 194       host = strdup(am_get_hostname());
 195     }
 196
 197     size = aix3_mkvp(buf, type, flags, rfs, dir, host,
 198                      real_args, real_size, mnt_opts);
 199     XFREE(rfs);
 200     XFREE(host);
 201     break;
 202
 203   case MOUNT_TYPE_UFS:
 204     /* Need to open block device and extract log device info from sblk. */
 205     return EINVAL;
 206
 207   default:
 208     return EINVAL;
 209   }
 210
 211   /*
 212    * XXX: Warning, if vmount() hangs your amd in AIX 5.1, it
 213    * is because of a kernel bug in the NFS code.  Get a patch from IBM
 214    * or upgrade to 5.2.
 215    */
 216   ret = vmount((struct vmount *)buf, size);
 217   if (ret < 0) {
 218     plog(XLOG_ERROR, "mount_aix3: vmount failed with errno %d", errno);
 219     perror ("vmount");
 220 #ifdef MOUNT_TYPE_NFS3_BIS
 221     if (aix_type == MOUNT_TYPE_NFS3 && errno == EINVAL) {
 222       aix_type = MOUNT_TYPE_NFS3_BIS;
 223 #ifdef DEBUG
 224       dlog("mount_aix3: retrying with alternate nfs3_args structure");
 225 #endif /* DEBUG */
 226       goto retry_ibm_buggy_service_pack;
 227     }
 228 #endif /* MOUNT_TYPE_NFS3_BIS */
 229   }
 230   return ret;
 231 }