world - Fix sysctlbyname() errno handling cases
[dragonfly.git] / sbin / mount_ufs / mount_ufs.c
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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.
dc71b7ab 13 * 3. Neither the name of the University nor the names of its contributors
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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.
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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 $
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32 */
33
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34#include <sys/param.h>
35#include <sys/mount.h>
e0fb398b 36#include <sys/sysctl.h>
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37
38#include <err.h>
39#include <errno.h>
2dc55a02 40#include <mntopts.h>
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41#include <stdio.h>
42#include <stdlib.h>
e0fb398b 43#include <string.h>
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44#include <unistd.h>
45
38a690d7 46#include <vfs/ufs/ufsmount.h>
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47
48#include "extern.h"
984263bc 49
9a76cd75 50static void ufs_usage(void);
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51
52static struct mntopt mopts[] = {
53 MOPT_STDOPTS,
54 MOPT_ASYNC,
55 MOPT_FORCE,
56 MOPT_SYNC,
57 MOPT_UPDATE,
5b599371 58 MOPT_IGNORE,
e0fb398b 59 MOPT_TRIM,
1946b5da 60 MOPT_NULL
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61};
62
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63int mount_ufs(int, const char **);
64
984263bc 65int
d13cd96e 66mount_ufs(int argc, const char **argv)
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67{
68 struct ufs_args args;
69 int ch, mntflags;
d13cd96e 70 const char *fs_name;
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71 struct vfsconf vfc;
72 int error = 0;
73
74 mntflags = 0;
75 optind = optreset = 1; /* Reset for parse of new argv. */
d13cd96e 76 while ((ch = getopt(argc, __DECONST(char **, argv), "o:")) != -1)
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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
45703ffa 91 args.fspec = __DECONST(char *, argv[0]); /* The name of the device file. */
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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
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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);
088b2e68 108 if (sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0) < 0) {
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109 printf("Device:%s does not support the TRIM command\n",
110 args.fspec);
111 ufs_usage();
112 }
113 if(!trim_enabled) {
114 printf("Online TRIM selected, but sysctl (%s) "
115 "is not enabled\n",sysctl_name);
116 ufs_usage();
117 }
118 }
119
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120 error = getvfsbyname("ufs", &vfc);
121 if (error && vfsisloadable("ufs")) {
122 if (vfsload("ufs")) {
123 warn("vfsload(ufs)");
124 return (1);
125 }
126 endvfsent(); /* flush old table */
127 error = getvfsbyname("ufs", &vfc);
128 }
129 if (error) {
130 warnx("ufs filesystem is not available");
131 return (1);
132 }
133
134 if (mount(vfc.vfc_name, fs_name, mntflags, &args) < 0) {
135 switch (errno) {
136 case EMFILE:
137 warnx("%s on %s: mount table full",
138 args.fspec, fs_name);
139 break;
140 case EINVAL:
141 if (mntflags & MNT_UPDATE)
142 warnx(
143 "%s on %s: specified device does not match mounted device",
144 args.fspec, fs_name);
145 else
146 warnx("%s on %s: incorrect super block",
147 args.fspec, fs_name);
148 break;
149 default:
150 warn("%s", args.fspec);
151 break;
152 }
153 return (1);
154 }
155 return (0);
156}
157
158static void
b5744197 159ufs_usage(void)
984263bc 160{
7cee7052 161 fprintf(stderr, "usage: mount_ufs [-o options] special node\n");
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162 exit(1);
163}