sbin/mount_ufs/mount_ufs.c

   1 /*-
   2  * Copyright (c) 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#) Copyright (c) 1993, 1994 The Regents of the University of California.  All rights reserved.
  30  * @(#)mount_ufs.c      8.4 (Berkeley) 4/26/95
  31  * $FreeBSD: src/sbin/mount/mount_ufs.c,v 1.16.2.3 2001/08/01 08:27:29 obrien Exp $
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/mount.h>
  36 #include <sys/sysctl.h>
  37
  38 #include <err.h>
  39 #include <errno.h>
  40 #include <mntopts.h>
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <unistd.h>
  45
  46 #include <vfs/ufs/ufsmount.h>
  47
  48 #include "extern.h"
  49
  50 static void ufs_usage(void);
  51
  52 static struct mntopt mopts[] = {
  53         MOPT_STDOPTS,
  54         MOPT_ASYNC,
  55         MOPT_FORCE,
  56         MOPT_SYNC,
  57         MOPT_UPDATE,
  58         MOPT_IGNORE,
  59         MOPT_TRIM,
  60         MOPT_NULL
  61 };
  62
  63 int mount_ufs(int, const char **);
  64
  65 int
  66 mount_ufs(int argc, const char **argv)
  67 {
  68         struct ufs_args args;
  69         int ch, mntflags;
  70         const char *fs_name;
  71         struct vfsconf vfc;
  72         int error = 0;
  73
  74         mntflags = 0;
  75         optind = optreset = 1;          /* Reset for parse of new argv. */
  76         while ((ch = getopt(argc, __DECONST(char **, argv), "o:")) != -1)
  77                 switch (ch) {
  78                 case 'o':
  79                         getmntopts(optarg, mopts, &mntflags, 0);
  80                         break;
  81                 case '?':
  82                 default:
  83                         ufs_usage();
  84                 }
  85         argc -= optind;
  86         argv += optind;
  87
  88         if (argc != 2)
  89                 ufs_usage();
  90
  91         args.fspec = __DECONST(char *, argv[0]);        /* The name of the device file. */
  92         fs_name = argv[1];              /* The mount point. */
  93
  94 #define DEFAULT_ROOTUID -2
  95         args.export.ex_root = DEFAULT_ROOTUID;
  96         if (mntflags & MNT_RDONLY)
  97                 args.export.ex_flags = MNT_EXRDONLY;
  98         else
  99                 args.export.ex_flags = 0;
 100
 101         if (mntflags & MNT_TRIM){
 102                 char sysctl_name[64];
 103                 int trim_enabled = 0;
 104                 size_t olen = sizeof(trim_enabled);
 105                 char *dev_name = strdup(args.fspec);
 106                 dev_name = strtok(dev_name + strlen("/dev/da"),"s");
 107                 sprintf(sysctl_name, "kern.cam.da.%s.trim_enabled", dev_name);
 108                 sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0);
 109                 if(errno == ENOENT) {
 110                         printf("Device:%s does not support the TRIM command\n",
 111                             args.fspec);
 112                         ufs_usage();
 113                 }
 114                 if(!trim_enabled) {
 115                         printf("Online TRIM selected, but sysctl (%s) "
 116                             "is not enabled\n",sysctl_name);
 117                         ufs_usage();
 118                 }
 119         }
 120
 121         error = getvfsbyname("ufs", &vfc);
 122         if (error && vfsisloadable("ufs")) {
 123                 if (vfsload("ufs")) {
 124                         warn("vfsload(ufs)");
 125                         return (1);
 126                 }
 127                 endvfsent(); /* flush old table */
 128                 error = getvfsbyname("ufs", &vfc);
 129         }
 130         if (error) {
 131                 warnx("ufs filesystem is not available");
 132                 return (1);
 133         }
 134
 135         if (mount(vfc.vfc_name, fs_name, mntflags, &args) < 0) {
 136                 switch (errno) {
 137                 case EMFILE:
 138                         warnx("%s on %s: mount table full",
 139                                 args.fspec, fs_name);
 140                         break;
 141                 case EINVAL:
 142                         if (mntflags & MNT_UPDATE)
 143                                 warnx(
 144                 "%s on %s: specified device does not match mounted device",
 145                                         args.fspec, fs_name);
 146                         else
 147                                 warnx("%s on %s: incorrect super block",
 148                                         args.fspec, fs_name);
 149                         break;
 150                 default:
 151                         warn("%s", args.fspec);
 152                         break;
 153                 }
 154                 return (1);
 155         }
 156         return (0);
 157 }
 158
 159 static void
 160 ufs_usage(void)
 161 {
 162         fprintf(stderr, "usage: mount_ufs [-o options] special node\n");
 163         exit(1);
 164 }