1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 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 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #include <sys/wait.h> 35 36 #include <ufs/ufs/dinode.h> 37 38 #include <errno.h> 39 #include <fstab.h> 40 #include <grp.h> 41 #include <limits.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <stdarg.h> 46 #include <signal.h> 47 #include <time.h> 48 #include <unistd.h> 49 50 #include "dump.h" 51 #include "pathnames.h" 52 53 void alarmcatch(int); 54 int datesort(const void *, const void *); 55 56 /* 57 * Query the operator; This previously-fascist piece of code 58 * no longer requires an exact response. 59 * It is intended to protect dump aborting by inquisitive 60 * people banging on the console terminal to see what is 61 * happening which might cause dump to croak, destroying 62 * a large number of hours of work. 63 * 64 * Every 2 minutes we reprint the message, alerting others 65 * that dump needs attention. 66 */ 67 static int timeout; 68 static const char *attnmessage; /* attention message */ 69 70 int 71 query(const char *question) 72 { 73 char replybuffer[64]; 74 int back, errcount; 75 FILE *mytty; 76 77 if ((mytty = fopen(_PATH_TTY, "r")) == NULL) 78 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno)); 79 attnmessage = question; 80 timeout = 0; 81 alarmcatch(0); 82 back = -1; 83 errcount = 0; 84 do { 85 if (fgets(replybuffer, 63, mytty) == NULL) { 86 clearerr(mytty); 87 if (++errcount > 30) /* XXX ugly */ 88 quit("excessive operator query failures\n"); 89 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') { 90 back = 1; 91 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') { 92 back = 0; 93 } else { 94 (void) fprintf(stderr, 95 " DUMP: \"Yes\" or \"No\"?\n"); 96 (void) fprintf(stderr, 97 " DUMP: %s: (\"yes\" or \"no\") ", question); 98 } 99 } while (back < 0); 100 101 /* 102 * Turn off the alarm, and reset the signal to trap out.. 103 */ 104 (void) alarm(0); 105 if (signal(SIGALRM, sig) == SIG_IGN) 106 signal(SIGALRM, SIG_IGN); 107 (void) fclose(mytty); 108 return(back); 109 } 110 111 char lastmsg[BUFSIZ]; 112 113 /* 114 * Alert the console operator, and enable the alarm clock to 115 * sleep for 2 minutes in case nobody comes to satisfy dump 116 */ 117 void 118 alarmcatch(int sig __unused) 119 { 120 if (notify == 0) { 121 if (timeout == 0) 122 (void) fprintf(stderr, 123 " DUMP: %s: (\"yes\" or \"no\") ", 124 attnmessage); 125 else 126 msgtail("\a\a"); 127 } else { 128 if (timeout) { 129 msgtail("\n"); 130 broadcast(""); /* just print last msg */ 131 } 132 (void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", 133 attnmessage); 134 } 135 signal(SIGALRM, alarmcatch); 136 (void) alarm(120); 137 timeout = 1; 138 } 139 140 /* 141 * Here if an inquisitive operator interrupts the dump program 142 */ 143 void 144 interrupt(int signo __unused) 145 { 146 msg("Interrupt received.\n"); 147 if (query("Do you want to abort dump?")) 148 dumpabort(0); 149 } 150 151 /* 152 * We now use wall(1) to do the actual broadcasting. 153 */ 154 void 155 broadcast(const char *message) 156 { 157 FILE *fp; 158 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 159 160 if (!notify) 161 return; 162 163 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 164 if ((fp = popen(buf, "w")) == NULL) 165 return; 166 167 (void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 168 if (lastmsg[0]) 169 (void) fputs(lastmsg, fp); 170 if (message[0]) 171 (void) fputs(message, fp); 172 173 (void) pclose(fp); 174 } 175 176 /* 177 * Print out an estimate of the amount of time left to do the dump 178 */ 179 180 time_t tschedule = 0; 181 182 void 183 timeest(void) 184 { 185 double percent; 186 time_t tnow, tdone; 187 char *tdone_str; 188 int deltat, hours, mins; 189 190 (void)time(&tnow); 191 if (blockswritten > tapesize) { 192 setproctitle("%s: 99.99%% done, finished soon", disk); 193 if (tnow >= tschedule) { 194 tschedule = tnow + 300; 195 msg("99.99%% done, finished soon\n"); 196 } 197 } else { 198 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 199 (double)(tnow - tstart_writing) / blockswritten * tapesize; 200 tdone = tnow + deltat; 201 percent = (blockswritten * 100.0) / tapesize; 202 hours = deltat / 3600; 203 mins = (deltat % 3600) / 60; 204 205 tdone_str = ctime(&tdone); 206 tdone_str[strlen(tdone_str) - 1] = '\0'; 207 setproctitle( 208 "%s: pass %d: %3.2f%% done, finished in %d:%02d at %s", 209 disk, passno, percent, hours, mins, tdone_str); 210 if (tnow >= tschedule) { 211 tschedule = tnow + 300; 212 if (blockswritten < 500) 213 return; 214 msg("%3.2f%% done, finished in %d:%02d at %s\n", percent, 215 hours, mins, tdone_str); 216 } 217 } 218 } 219 220 /* 221 * Schedule a printout of the estimate in the next call to timeest(). 222 */ 223 void 224 infosch(int signal __unused) 225 { 226 tschedule = 0; 227 } 228 229 void 230 msg(const char *fmt, ...) 231 { 232 va_list ap; 233 234 (void) fprintf(stderr," DUMP: "); 235 #ifdef TDEBUG 236 (void) fprintf(stderr, "pid=%d ", getpid()); 237 #endif 238 va_start(ap, fmt); 239 (void) vfprintf(stderr, fmt, ap); 240 va_end(ap); 241 (void) fflush(stdout); 242 (void) fflush(stderr); 243 va_start(ap, fmt); 244 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 245 va_end(ap); 246 } 247 248 void 249 msgtail(const char *fmt, ...) 250 { 251 va_list ap; 252 253 va_start(ap, fmt); 254 (void) vfprintf(stderr, fmt, ap); 255 va_end(ap); 256 } 257 258 void 259 quit(const char *fmt, ...) 260 { 261 va_list ap; 262 263 (void) fprintf(stderr," DUMP: "); 264 #ifdef TDEBUG 265 (void) fprintf(stderr, "pid=%d ", getpid()); 266 #endif 267 va_start(ap, fmt); 268 (void) vfprintf(stderr, fmt, ap); 269 va_end(ap); 270 (void) fflush(stdout); 271 (void) fflush(stderr); 272 dumpabort(0); 273 } 274 275 /* 276 * Tell the operator what has to be done; 277 * we don't actually do it 278 */ 279 280 struct fstab * 281 allocfsent(const struct fstab *fs) 282 { 283 struct fstab *new; 284 285 new = (struct fstab *)malloc(sizeof (*fs)); 286 if (new == NULL || 287 (new->fs_file = strdup(fs->fs_file)) == NULL || 288 (new->fs_type = strdup(fs->fs_type)) == NULL || 289 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 290 quit("%s\n", strerror(errno)); 291 new->fs_passno = fs->fs_passno; 292 new->fs_freq = fs->fs_freq; 293 return (new); 294 } 295 296 struct pfstab { 297 SLIST_ENTRY(pfstab) pf_list; 298 struct fstab *pf_fstab; 299 }; 300 301 static SLIST_HEAD(, pfstab) table; 302 303 void 304 dump_getfstab(void) 305 { 306 struct fstab *fs; 307 struct pfstab *pf; 308 309 if (setfsent() == 0) { 310 msg("Can't open %s for dump table information: %s\n", 311 _PATH_FSTAB, strerror(errno)); 312 return; 313 } 314 while ((fs = getfsent()) != NULL) { 315 if ((strcmp(fs->fs_type, FSTAB_RW) && 316 strcmp(fs->fs_type, FSTAB_RO) && 317 strcmp(fs->fs_type, FSTAB_RQ)) || 318 strcmp(fs->fs_vfstype, "ufs")) 319 continue; 320 fs = allocfsent(fs); 321 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 322 quit("%s\n", strerror(errno)); 323 pf->pf_fstab = fs; 324 SLIST_INSERT_HEAD(&table, pf, pf_list); 325 } 326 (void) endfsent(); 327 } 328 329 /* 330 * Search in the fstab for a file name. 331 * This file name can be either the special or the path file name. 332 * 333 * The file name can omit the leading '/'. 334 */ 335 struct fstab * 336 fstabsearch(const char *key) 337 { 338 struct pfstab *pf; 339 struct fstab *fs; 340 char *rn; 341 342 SLIST_FOREACH(pf, &table, pf_list) { 343 fs = pf->pf_fstab; 344 if (strcmp(fs->fs_file, key) == 0 || 345 strcmp(fs->fs_spec, key) == 0) 346 return (fs); 347 rn = rawname(fs->fs_spec); 348 if (rn != NULL && strcmp(rn, key) == 0) 349 return (fs); 350 if (key[0] != '/') { 351 if (*fs->fs_spec == '/' && 352 strcmp(fs->fs_spec + 1, key) == 0) 353 return (fs); 354 if (*fs->fs_file == '/' && 355 strcmp(fs->fs_file + 1, key) == 0) 356 return (fs); 357 } 358 } 359 return (NULL); 360 } 361 362 /* 363 * Tell the operator what to do 364 */ 365 void 366 lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */ 367 { 368 int i; 369 struct fstab *dt; 370 struct dumpdates *dtwalk; 371 char *lastname, *date; 372 int dumpme; 373 time_t tnow; 374 struct tm *tlast; 375 376 (void) time(&tnow); 377 dump_getfstab(); /* /etc/fstab input */ 378 initdumptimes(); /* /etc/dumpdates input */ 379 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 380 381 if (arg == 'w') 382 (void) printf("Dump these file systems:\n"); 383 else 384 (void) printf("Last dump(s) done (Dump '>' file systems):\n"); 385 lastname = "??"; 386 ITITERATE(i, dtwalk) { 387 if (strncmp(lastname, dtwalk->dd_name, 388 sizeof(dtwalk->dd_name)) == 0) 389 continue; 390 date = (char *)ctime(&dtwalk->dd_ddate); 391 date[16] = '\0'; /* blast away seconds and year */ 392 lastname = dtwalk->dd_name; 393 dt = fstabsearch(dtwalk->dd_name); 394 dumpme = (dt != NULL && dt->fs_freq != 0); 395 if (dumpme) { 396 tlast = localtime(&dtwalk->dd_ddate); 397 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 398 - (tlast->tm_min * 60) - tlast->tm_sec 399 + (dt->fs_freq * 86400)); 400 } 401 if (arg != 'w' || dumpme) 402 (void) printf( 403 "%c %8s\t(%6s) Last dump: Level %d, Date %s\n", 404 dumpme && (arg != 'w') ? '>' : ' ', 405 dtwalk->dd_name, 406 dt ? dt->fs_file : "", 407 dtwalk->dd_level, 408 date); 409 } 410 } 411 412 int 413 datesort(const void *a1, const void *a2) 414 { 415 struct dumpdates *d1 = *(struct dumpdates **)a1; 416 struct dumpdates *d2 = *(struct dumpdates **)a2; 417 int diff; 418 419 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 420 if (diff == 0) 421 return (d2->dd_ddate - d1->dd_ddate); 422 return (diff); 423 } 424