usr.sbin/puffs/rump_lfs/rump_lfs.c

   1 /*      $NetBSD: rump_lfs.c,v 1.13 2009/12/03 14:27:16 pooka Exp $      */
   2
   3 /*
   4  * Copyright (c) 2008 Antti Kantee.  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  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/types.h>
  29 #include <sys/mount.h>
  30
  31 #include <ufs/ufs/ufsmount.h>
  32
  33 #include <err.h>
  34 #include <pthread.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <unistd.h>
  38
  39 #include <rump/rump.h>
  40 #include <rump/p2k.h>
  41 #include <rump/ukfs.h>
  42
  43 #include "mount_lfs.h"
  44
  45 static void *
  46 cleaner(void *arg)
  47 {
  48         const char *the_argv[7];
  49
  50         the_argv[0] = "megamaid";
  51         the_argv[1] = "-D"; /* don't fork() & detach */
  52         the_argv[2] = arg;
  53
  54         lfs_cleaner_main(3, __UNCONST(the_argv));
  55
  56         return NULL;
  57 }
  58
  59 int
  60 main(int argc, char *argv[])
  61 {
  62         struct ufs_args args;
  63         char canon_dev[UKFS_DEVICE_MAXPATHLEN], canon_dir[MAXPATHLEN];
  64         char rawdev[MAXPATHLEN];
  65         struct p2k_mount *p2m;
  66         pthread_t cleanerthread;
  67         struct ukfs_part *part;
  68         int mntflags;
  69         int rv;
  70
  71         setprogname(argv[0]);
  72
  73         UKFS_DEVICE_ARGVPROBE(&part);
  74         if (part != ukfs_part_none) {
  75                 errx(1, "lfs does not currently support embedded partitions");
  76         }
  77         mount_lfs_parseargs(argc, argv, &args, &mntflags, canon_dev, canon_dir);
  78
  79         p2m = p2k_init(0);
  80         if (!p2m)
  81                 err(1, "init p2k");
  82         /*
  83          * XXX: this particular piece inspired by the cleaner code.
  84          * obviously FIXXXME along with the cleaner.
  85          */
  86         sprintf(rawdev, "/dev/r%s", canon_dev+5);
  87         rump_pub_etfs_register(rawdev, canon_dev, RUMP_ETFS_CHR);
  88
  89         /*
  90          * We basically have two choices:
  91          *  1) run the cleaner in another process and do rump ipc syscalls
  92          *  2) run it off a thread in this process and do rump syscalls
  93          *     as function calls.
  94          *
  95          * opt for "2" for now
  96          */
  97 #ifdef CLEANER_TESTING
  98         ukfs_mount(MOUNT_LFS, canon_dev, canon_dir, mntflags,
  99             &args, sizeof(args));
 100         cleaner(canon_dir);
 101 #endif
 102         if (p2k_setup_diskfs(p2m, MOUNT_LFS, canon_dev, part, canon_dir,
 103             mntflags, &args, sizeof(args)) == -1)
 104                 err(1, "mount");
 105         ukfs_part_release(part);
 106
 107 #ifndef CLEANER_TESTING
 108         if ((mntflags & MNT_RDONLY) == 0) {
 109                 if (pthread_create(&cleanerthread, NULL,
 110                     cleaner, canon_dir) == -1)
 111                         err(1, "cannot start cleaner");
 112         }
 113 #endif
 114
 115         rv = p2k_mainloop(p2m);
 116         if (rv == -1)
 117                 err(1, "fs service");
 118
 119         return 0;
 120 }