| 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 | * |
| 34 | * $DragonFly: src/sbin/mount_hammer/mount_hammer.c,v 1.2 2007/11/30 00:16:54 dillon Exp $ |
| 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> |
| 55 | #include <ctype.h> |
| 56 | |
| 57 | #include "mntopts.h" |
| 58 | |
| 59 | static void hammer_parsetime(u_int64_t *tidp, const char *timestr); |
| 60 | |
| 61 | #define MOPT_HAMMEROPTS \ |
| 62 | { "history", 1, HMNT_NOHISTORY, 1 } |
| 63 | |
| 64 | static struct mntopt mopts[] = { MOPT_STDOPTS, MOPT_HAMMEROPTS, MOPT_NULL }; |
| 65 | |
| 66 | static void usage(void); |
| 67 | |
| 68 | int |
| 69 | main(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 | |
| 78 | bzero(&info, sizeof(info)); |
| 79 | info.asof = 0; |
| 80 | mount_flags = 0; |
| 81 | info.hflags = 0; |
| 82 | |
| 83 | while ((ch = getopt(ac, av, "o:T:")) != -1) { |
| 84 | switch(ch) { |
| 85 | case 'T': |
| 86 | hammer_parsetime(&info.asof, optarg); |
| 87 | break; |
| 88 | case 'o': |
| 89 | getmntopts(optarg, mopts, &mount_flags, &info.hflags); |
| 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 | |
| 130 | /* |
| 131 | * Parse a timestamp for the mount point |
| 132 | * |
| 133 | * yyyymmddhhmmss |
| 134 | * -N[s/h/d/m/y] |
| 135 | */ |
| 136 | static |
| 137 | void |
| 138 | hammer_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 | |
| 196 | static |
| 197 | void |
| 198 | usage(void) |
| 199 | { |
| 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); |
| 205 | } |