HAMMER 9/many - btree removal cases, mount nohistory
[dragonfly.git] / sbin / mount_hammer / mount_hammer.c
CommitLineData
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1/*
2 * Copyright (c) 2007 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
195c19a1 34 * $DragonFly: src/sbin/mount_hammer/mount_hammer.c,v 1.2 2007/11/30 00:16:54 dillon Exp $
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35 */
36
37#include <sys/types.h>
38#include <sys/diskslice.h>
39#include <sys/diskmbr.h>
40#include <sys/stat.h>
41#include <sys/time.h>
42#include <vfs/hammer/hammer_mount.h>
43
44#include <stdio.h>
45#include <stdlib.h>
46#include <stdarg.h>
47#include <stddef.h>
48#include <unistd.h>
49#include <string.h>
50#include <errno.h>
51#include <fcntl.h>
52#include <uuid.h>
53#include <err.h>
54#include <assert.h>
195c19a1 55#include <ctype.h>
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56
57#include "mntopts.h"
58
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59static void hammer_parsetime(u_int64_t *tidp, const char *timestr);
60
61#define MOPT_HAMMEROPTS \
62 { "history", 1, HMNT_NOHISTORY, 1 }
63
64static struct mntopt mopts[] = { MOPT_STDOPTS, MOPT_HAMMEROPTS, MOPT_NULL };
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65
66static void usage(void);
67
68int
69main(int ac, char **av)
70{
71 struct hammer_mount_info info;
72 struct vfsconf vfc;
73 int mount_flags;
74 int error;
75 int ch;
76 char *mountpt;
77
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78 bzero(&info, sizeof(info));
79 info.asof = 0;
a89ff8c8 80 mount_flags = 0;
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81 info.hflags = 0;
82
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83 while ((ch = getopt(ac, av, "o:T:")) != -1) {
84 switch(ch) {
85 case 'T':
195c19a1 86 hammer_parsetime(&info.asof, optarg);
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87 break;
88 case 'o':
195c19a1 89 getmntopts(optarg, mopts, &mount_flags, &info.hflags);
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90 break;
91 default:
92 usage();
93 /* not reached */
94 }
95 }
96 ac -= optind;
97 av += optind;
98
99 if (ac < 2) {
100 usage();
101 /* not reached */
102 }
103
104 /*
105 * Mount arguments: vol [vol...] mountpt
106 */
107 info.volumes = (const char **)av;
108 info.nvolumes = ac - 1;
109 mountpt = av[ac - 1];
110
111 /*
112 * Load the hammer module if necessary (this bit stolen from
113 * mount_null).
114 */
115 error = getvfsbyname("hammer", &vfc);
116 if (error && vfsisloadable("hammer")) {
117 if (vfsload("hammer") != 0)
118 err(1, "vfsload(hammer)");
119 endvfsent();
120 error = getvfsbyname("hammer", &vfc);
121 }
122 if (error)
123 errx(1, "hammer filesystem is not available");
124
125 if (mount(vfc.vfc_name, mountpt, mount_flags, &info))
126 err(1, NULL);
127 exit(0);
128}
129
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130/*
131 * Parse a timestamp for the mount point
132 *
133 * yyyymmddhhmmss
134 * -N[s/h/d/m/y]
135 */
136static
137void
138hammer_parsetime(u_int64_t *tidp, const char *timestr)
139{
140 struct tm tm;
141 time_t t;
142 int32_t n;
143 char c;
144 double seconds = 0;
145
146 t = time(NULL);
147
148 if (*timestr == 0)
149 usage();
150
151 if (isalpha(timestr[strlen(timestr)-1])) {
152 if (sscanf(timestr, "%d%c", &n, &c) != 2)
153 usage();
154 switch(c) {
155 case 'Y':
156 n *= 365;
157 goto days;
158 case 'M':
159 n *= 30;
160 /* fall through */
161 case 'D':
162 days:
163 n *= 24;
164 /* fall through */
165 case 'h':
166 n *= 60;
167 /* fall through */
168 case 'm':
169 n *= 60;
170 /* fall through */
171 case 's':
172 t -= n;
173 break;
174 default:
175 usage();
176 }
177 } else {
178 localtime_r(&t, &tm);
179 seconds = (double)tm.tm_sec;
180 tm.tm_year -= 1900;
181 tm.tm_mon -= 1;
182 n = sscanf(timestr, "%4d%2d%2d:%2d%2d%lf",
183 &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
184 &tm.tm_hour, &tm.tm_min, &seconds);
185 tm.tm_mon += 1;
186 tm.tm_year += 19000;
187 tm.tm_sec = (int)seconds;
188 t = mktime(&tm);
189 }
190 localtime_r(&t, &tm);
191 printf("mount_hammer as-of %s", asctime(&tm));
192 *tidp = (u_int64_t)t * 1000000000 +
193 (seconds - (int)seconds) * 1000000000;
194}
195
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196static
197void
198usage(void)
199{
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200 fprintf(stderr, "mount_hammer [-T time] [-o options] "
201 "volume [volume...] mount_pt");
202 fprintf(stderr, " time: +n[s/m/h/D/M/Y]\n"
203 " time: yyyymmdd[:hhmmss]\n");
204 exit(1);
a89ff8c8 205}