TRIM support
[dragonfly.git] / sbin / mount / 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.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
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32 *
33 * @(#) Copyright (c) 1993, 1994 The Regents of the University of California. All rights reserved.
34 * @(#)mount_ufs.c 8.4 (Berkeley) 4/26/95
35 * $FreeBSD: src/sbin/mount/mount_ufs.c,v 1.16.2.3 2001/08/01 08:27:29 obrien Exp $
45703ffa 36 * $DragonFly: src/sbin/mount/mount_ufs.c,v 1.9 2006/10/28 20:42:54 pavalos Exp $
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37 */
38
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39#include <sys/param.h>
40#include <sys/mount.h>
e0fb398b 41#include <sys/sysctl.h>
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42
43#include <err.h>
44#include <errno.h>
45#include <stdio.h>
46#include <stdlib.h>
e0fb398b 47#include <string.h>
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48#include <unistd.h>
49
38a690d7 50#include <vfs/ufs/ufsmount.h>
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51
52#include "extern.h"
53#include "mntopts.h"
54
9a76cd75 55static void ufs_usage(void);
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56
57static struct mntopt mopts[] = {
58 MOPT_STDOPTS,
59 MOPT_ASYNC,
60 MOPT_FORCE,
61 MOPT_SYNC,
62 MOPT_UPDATE,
5b599371 63 MOPT_IGNORE,
e0fb398b 64 MOPT_TRIM,
1946b5da 65 MOPT_NULL
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66};
67
68int
d13cd96e 69mount_ufs(int argc, const char **argv)
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70{
71 struct ufs_args args;
72 int ch, mntflags;
d13cd96e 73 const char *fs_name;
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74 struct vfsconf vfc;
75 int error = 0;
76
77 mntflags = 0;
78 optind = optreset = 1; /* Reset for parse of new argv. */
d13cd96e 79 while ((ch = getopt(argc, __DECONST(char **, argv), "o:")) != -1)
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80 switch (ch) {
81 case 'o':
82 getmntopts(optarg, mopts, &mntflags, 0);
83 break;
84 case '?':
85 default:
86 ufs_usage();
87 }
88 argc -= optind;
89 argv += optind;
90
91 if (argc != 2)
92 ufs_usage();
93
45703ffa 94 args.fspec = __DECONST(char *, argv[0]); /* The name of the device file. */
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95 fs_name = argv[1]; /* The mount point. */
96
97#define DEFAULT_ROOTUID -2
98 args.export.ex_root = DEFAULT_ROOTUID;
99 if (mntflags & MNT_RDONLY)
100 args.export.ex_flags = MNT_EXRDONLY;
101 else
102 args.export.ex_flags = 0;
103
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104 if (mntflags & MNT_TRIM){
105 char sysctl_name[64];
106 int trim_enabled = 0;
107 size_t olen = sizeof(trim_enabled);
108 char *dev_name = strdup(args.fspec);
109 dev_name = strtok(dev_name + strlen("/dev/da"),"s");
110 sprintf(sysctl_name, "kern.cam.da.%s.trim_enabled", dev_name);
111 sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0);
112 if(errno == ENOENT) {
113 printf("Device:%s does not support the TRIM command\n",
114 args.fspec);
115 ufs_usage();
116 }
117 if(!trim_enabled) {
118 printf("Online TRIM selected, but sysctl (%s) "
119 "is not enabled\n",sysctl_name);
120 ufs_usage();
121 }
122 }
123
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124 error = getvfsbyname("ufs", &vfc);
125 if (error && vfsisloadable("ufs")) {
126 if (vfsload("ufs")) {
127 warn("vfsload(ufs)");
128 return (1);
129 }
130 endvfsent(); /* flush old table */
131 error = getvfsbyname("ufs", &vfc);
132 }
133 if (error) {
134 warnx("ufs filesystem is not available");
135 return (1);
136 }
137
138 if (mount(vfc.vfc_name, fs_name, mntflags, &args) < 0) {
139 switch (errno) {
140 case EMFILE:
141 warnx("%s on %s: mount table full",
142 args.fspec, fs_name);
143 break;
144 case EINVAL:
145 if (mntflags & MNT_UPDATE)
146 warnx(
147 "%s on %s: specified device does not match mounted device",
148 args.fspec, fs_name);
149 else
150 warnx("%s on %s: incorrect super block",
151 args.fspec, fs_name);
152 break;
153 default:
154 warn("%s", args.fspec);
155 break;
156 }
157 return (1);
158 }
159 return (0);
160}
161
162static void
b5744197 163ufs_usage(void)
984263bc 164{
7cee7052 165 fprintf(stderr, "usage: mount_ufs [-o options] special node\n");
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166 exit(1);
167}