sys/compat/osf1/osf1_mount.c

   1 /*      $NetBSD: osf1_mount.c,v 1.45 2008/06/24 11:18:15 ad Exp $       */
   2
   3 /*
   4  * Copyright (c) 1999 Christopher G. Demetriou.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Christopher G. Demetriou
  17  *      for the NetBSD Project.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Copyright (c) 1994, 1995 Carnegie-Mellon University.
  35  * All rights reserved.
  36  *
  37  * Author: Chris G. Demetriou
  38  *
  39  * Permission to use, copy, modify and distribute this software and
  40  * its documentation is hereby granted, provided that both the copyright
  41  * notice and this permission notice appear in all copies of the
  42  * software, derivative works or modified versions, and any portions
  43  * thereof, and that both notices appear in supporting documentation.
  44  *
  45  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  46  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  47  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  48  *
  49  * Carnegie Mellon requests users of this software to return to
  50  *
  51  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  52  *  School of Computer Science
  53  *  Carnegie Mellon University
  54  *  Pittsburgh PA 15213-3890
  55  *
  56  * any improvements or extensions that they make and grant Carnegie the
  57  * rights to redistribute these changes.
  58  */
  59
  60 #include <sys/cdefs.h>
  61 __KERNEL_RCSID(0, "$NetBSD: osf1_mount.c,v 1.45 2008/06/24 11:18:15 ad Exp $");
  62
  63 #if defined(_KERNEL_OPT)
  64 #include "fs_nfs.h"
  65 #endif
  66
  67 #include <sys/param.h>
  68 #include <sys/systm.h>
  69 #include <sys/namei.h>
  70 #include <sys/proc.h>
  71 #include <sys/file.h>
  72 #include <sys/filedesc.h>
  73 #include <sys/kernel.h>
  74 #include <sys/mount.h>
  75 #include <sys/vnode.h>
  76 #include <sys/syscallargs.h>
  77
  78 #include <compat/osf1/osf1.h>
  79 #include <compat/osf1/osf1_syscallargs.h>
  80 #include <compat/common/compat_util.h>
  81 #include <compat/osf1/osf1_cvt.h>
  82
  83 #include <net/if.h>
  84 #include <netinet/in.h>
  85
  86 #include <nfs/rpcv2.h>
  87 #include <nfs/nfsproto.h>
  88 #include <nfs/nfs.h>
  89 #include <nfs/nfsmount.h>
  90
  91 #include <ufs/ufs/quota.h>
  92 #include <ufs/ufs/ufsmount.h>
  93
  94 #include <machine/vmparam.h>
  95
  96 #define OSF1_MNT_WAIT           0x1
  97 #define OSF1_MNT_NOWAIT         0x2
  98
  99 #define OSF1_MNT_FORCE          0x1
 100 #define OSF1_MNT_NOFORCE        0x2
 101
 102 /* acceptable flags for various calls */
 103 #define OSF1_GETFSSTAT_FLAGS    (OSF1_MNT_WAIT|OSF1_MNT_NOWAIT)
 104 #define OSF1_MOUNT_FLAGS        0xffffffff                      /* XXX */
 105 #define OSF1_UNMOUNT_FLAGS      (OSF1_MNT_FORCE|OSF1_MNT_NOFORCE)
 106
 107
 108 static int      osf1_mount_mfs(struct lwp *, const struct osf1_sys_mount_args *);
 109 static int      osf1_mount_nfs(struct lwp *, const struct osf1_sys_mount_args *);
 110
 111 int
 112 osf1_sys_fstatfs(struct lwp *l, const struct osf1_sys_fstatfs_args *uap, register_t *retval)
 113 {
 114         file_t *fp;
 115         struct mount *mp;
 116         struct statvfs *sp;
 117         struct osf1_statfs osfs;
 118         int error;
 119
 120         /* fd_getvnode() will use the descriptor for us */
 121         if ((error = fd_getvnode(SCARG(uap, fd), &fp)))
 122                 return (error);
 123         mp = ((struct vnode *)fp->f_data)->v_mount;
 124         sp = &mp->mnt_stat;
 125         if ((error = VFS_STATVFS(mp, sp)))
 126                 goto out;
 127         sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK;
 128         osf1_cvt_statfs_from_native(sp, &osfs);
 129         error = copyout(&osfs, SCARG(uap, buf), min(sizeof osfs,
 130             SCARG(uap, len)));
 131  out:
 132         fd_putfile(SCARG(uap, fd));
 133         return (error);
 134 }
 135
 136 int
 137 osf1_sys_getfsstat(struct lwp *l, const struct osf1_sys_getfsstat_args *uap, register_t *retval)
 138 {
 139         struct mount *mp, *nmp;
 140         struct statvfs *sp;
 141         struct osf1_statfs osfs;
 142         char *osf_sfsp;
 143         long count, maxcount, error;
 144
 145         if (SCARG(uap, flags) & ~OSF1_GETFSSTAT_FLAGS)
 146                 return (EINVAL);
 147
 148         maxcount = SCARG(uap, bufsize) / sizeof(struct osf1_statfs);
 149         osf_sfsp = (void *)SCARG(uap, buf);
 150         mutex_enter(&mountlist_lock);
 151         for (count = 0, mp = mountlist.cqh_first; mp != (void *)&mountlist;
 152             mp = nmp) {
 153                 if (vfs_busy(mp, &nmp)) {
 154                         continue;
 155                 }
 156                 if (osf_sfsp && count < maxcount) {
 157                         sp = &mp->mnt_stat;
 158                         /*
 159                          * If OSF1_MNT_NOWAIT is specified, do not refresh the
 160                          * fsstat cache.  OSF1_MNT_WAIT overrides
 161                          * OSF1_MNT_NOWAIT.
 162                          */
 163                         if (((SCARG(uap, flags) & OSF1_MNT_NOWAIT) == 0 ||
 164                             (SCARG(uap, flags) & OSF1_MNT_WAIT)) &&
 165                             (error = VFS_STATVFS(mp, sp)) == 0) {
 166                                 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK;
 167                                 osf1_cvt_statfs_from_native(sp, &osfs);
 168                                 if ((error = copyout(&osfs, osf_sfsp,
 169                                     sizeof (struct osf1_statfs)))) {
 170                                         vfs_unbusy(mp, false, NULL);
 171                                         return (error);
 172                                 }
 173                                 osf_sfsp += sizeof (struct osf1_statfs);
 174                         }
 175                 }
 176                 count++;
 177                 vfs_unbusy(mp, false, &nmp);
 178         }
 179         mutex_exit(&mountlist_lock);
 180         if (osf_sfsp && count > maxcount)
 181                 *retval = maxcount;
 182         else
 183                 *retval = count;
 184         return (0);
 185 }
 186
 187 int
 188 osf1_sys_mount(struct lwp *l, const struct osf1_sys_mount_args *uap, register_t *retval)
 189 {
 190
 191         if (SCARG(uap, flags) & ~OSF1_MOUNT_FLAGS)
 192                 return (EINVAL);
 193
 194         /* XXX - xlate flags */
 195
 196         switch (SCARG(uap, type)) {
 197         case OSF1_MOUNT_NFS:
 198                 return osf1_mount_nfs(l, uap);
 199                 break;
 200
 201         case OSF1_MOUNT_MFS:
 202                 return osf1_mount_mfs(l, uap);
 203
 204         default:
 205                 return (EINVAL);
 206         }
 207 }
 208
 209 int
 210 osf1_sys_statfs(struct lwp *l, const struct osf1_sys_statfs_args *uap, register_t *retval)
 211 {
 212         struct mount *mp;
 213         struct statvfs *sp;
 214         struct osf1_statfs osfs;
 215         int error;
 216         struct vnode *vp;
 217
 218         error = namei_simple_user(SCARG(uap, path),
 219                                 NSM_FOLLOW_TRYEMULROOT, &vp);
 220         if (error != 0)
 221                 return (error);
 222         mp = vp->v_mount;
 223         sp = &mp->mnt_stat;
 224         vrele(vp);
 225         if ((error = VFS_STATVFS(mp, sp)))
 226                 return (error);
 227         sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK;
 228         osf1_cvt_statfs_from_native(sp, &osfs);
 229         return copyout(&osfs, SCARG(uap, buf), min(sizeof osfs,
 230             SCARG(uap, len)));
 231 }
 232
 233 int
 234 osf1_sys_unmount(struct lwp *l, const struct osf1_sys_unmount_args *uap, register_t *retval)
 235 {
 236         struct sys_unmount_args a;
 237
 238         SCARG(&a, path) = SCARG(uap, path);
 239
 240         if (SCARG(uap, flags) & ~OSF1_UNMOUNT_FLAGS)
 241                 return (EINVAL);
 242         SCARG(&a, flags) = 0;
 243         if ((SCARG(uap, flags) & OSF1_MNT_FORCE) &&
 244             (SCARG(uap, flags) & OSF1_MNT_NOFORCE) == 0)
 245                 SCARG(&a, flags) |= MNT_FORCE;
 246
 247         return sys_unmount(l, &a, retval);
 248 }
 249
 250 static int
 251 osf1_mount_mfs(struct lwp *l, const struct osf1_sys_mount_args *uap)
 252 {
 253         struct osf1_mfs_args osf_ma;
 254         struct mfs_args bsd_ma;
 255         int error;
 256         register_t dummy;
 257
 258         if ((error = copyin(SCARG(uap, data), &osf_ma, sizeof osf_ma)))
 259                 return error;
 260
 261         memset(&bsd_ma, 0, sizeof bsd_ma);
 262         bsd_ma.fspec = osf_ma.name;
 263         /* XXX export args */
 264         bsd_ma.base = osf_ma.base;
 265         bsd_ma.size = osf_ma.size;
 266
 267         return do_sys_mount(l, vfs_getopsbyname("mfs"), NULL, SCARG(uap, path),
 268             SCARG(uap, flags), &bsd_ma, UIO_SYSSPACE, sizeof bsd_ma, &dummy);
 269 }
 270
 271 static int
 272 osf1_mount_nfs(struct lwp *l, const struct osf1_sys_mount_args *uap)
 273 {
 274         struct osf1_nfs_args osf_na;
 275         struct nfs_args bsd_na;
 276         int error;
 277         unsigned long leftovers;
 278         register_t dummy;
 279
 280         if ((error = copyin(SCARG(uap, data), &osf_na, sizeof osf_na)))
 281                 return error;
 282
 283         memset(&bsd_na, 0, sizeof bsd_na);
 284         bsd_na.addr = (struct sockaddr *)osf_na.addr;
 285         bsd_na.addrlen = sizeof (struct sockaddr_in);
 286         bsd_na.fh = osf_na.fh;
 287
 288         /* translate flags */
 289         bsd_na.flags = emul_flags_translate(osf1_nfs_mount_flags_xtab,
 290             osf_na.flags, &leftovers);
 291         if (leftovers & OSF1_NFSMNT_HOSTNAME) {
 292                 leftovers &= ~OSF1_NFSMNT_HOSTNAME;
 293                 bsd_na.hostname = osf_na.hostname;
 294         } else {
 295                 /* XXX FILL IN HOST NAME WITH IPADDR? */
 296         }
 297         if (leftovers & OSF1_NFSMNT_TCP) {
 298                 leftovers &= ~OSF1_NFSMNT_TCP;
 299                 bsd_na.sotype = SOCK_DGRAM;
 300                 bsd_na.proto = 0;
 301         } else {
 302                 bsd_na.sotype = SOCK_STREAM;
 303                 bsd_na.proto = 0;
 304         }
 305         if (leftovers != 0)
 306                 return (EINVAL);
 307
 308         /* copy structure elements based on flags */
 309         if (bsd_na.flags & NFSMNT_WSIZE)
 310                 bsd_na.wsize = osf_na.wsize;
 311         if (bsd_na.flags & NFSMNT_RSIZE)
 312                 bsd_na.rsize = osf_na.rsize;
 313         if (bsd_na.flags & NFSMNT_TIMEO)
 314                 bsd_na.timeo = osf_na.timeo;
 315         if (bsd_na.flags & NFSMNT_RETRANS)
 316                 bsd_na.retrans = osf_na.retrans;
 317
 318         return do_sys_mount(l, vfs_getopsbyname("nfs"), NULL, SCARG(uap, path),
 319             SCARG(uap, flags), &bsd_na, UIO_SYSSPACE, sizeof bsd_na, &dummy);
 320
 321         return 0;
 322 }