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 #ifndef lint 33 #if 0 34 static char sccsid[] = "@(#)optr.c 8.2 (Berkeley) 1/6/94"; 35 #endif 36 static const char rcsid[] = 37 "$FreeBSD$"; 38 #endif /* not lint */ 39 40 #include <sys/param.h> 41 #include <sys/queue.h> 42 #include <sys/wait.h> 43 44 #include <ufs/ufs/dinode.h> 45 46 #include <errno.h> 47 #include <fstab.h> 48 #include <grp.h> 49 #include <limits.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <stdarg.h> 54 #include <signal.h> 55 #include <time.h> 56 #include <unistd.h> 57 58 #include "dump.h" 59 #include "pathnames.h" 60 61 void alarmcatch(int); 62 int datesort(const void *, const void *); 63 64 /* 65 * Query the operator; This previously-fascist piece of code 66 * no longer requires an exact response. 67 * It is intended to protect dump aborting by inquisitive 68 * people banging on the console terminal to see what is 69 * happening which might cause dump to croak, destroying 70 * a large number of hours of work. 71 * 72 * Every 2 minutes we reprint the message, alerting others 73 * that dump needs attention. 74 */ 75 static int timeout; 76 static const char *attnmessage; /* attention message */ 77 78 int 79 query(const char *question) 80 { 81 char replybuffer[64]; 82 int back, errcount; 83 FILE *mytty; 84 85 if ((mytty = fopen(_PATH_TTY, "r")) == NULL) 86 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno)); 87 attnmessage = question; 88 timeout = 0; 89 alarmcatch(0); 90 back = -1; 91 errcount = 0; 92 do { 93 if (fgets(replybuffer, 63, mytty) == NULL) { 94 clearerr(mytty); 95 if (++errcount > 30) /* XXX ugly */ 96 quit("excessive operator query failures\n"); 97 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') { 98 back = 1; 99 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') { 100 back = 0; 101 } else { 102 (void) fprintf(stderr, 103 " DUMP: \"Yes\" or \"No\"?\n"); 104 (void) fprintf(stderr, 105 " DUMP: %s: (\"yes\" or \"no\") ", question); 106 } 107 } while (back < 0); 108 109 /* 110 * Turn off the alarm, and reset the signal to trap out.. 111 */ 112 (void) alarm(0); 113 if (signal(SIGALRM, sig) == SIG_IGN) 114 signal(SIGALRM, SIG_IGN); 115 (void) fclose(mytty); 116 return(back); 117 } 118 119 char lastmsg[BUFSIZ]; 120 121 /* 122 * Alert the console operator, and enable the alarm clock to 123 * sleep for 2 minutes in case nobody comes to satisfy dump 124 */ 125 void 126 alarmcatch(int sig __unused) 127 { 128 if (notify == 0) { 129 if (timeout == 0) 130 (void) fprintf(stderr, 131 " DUMP: %s: (\"yes\" or \"no\") ", 132 attnmessage); 133 else 134 msgtail("\a\a"); 135 } else { 136 if (timeout) { 137 msgtail("\n"); 138 broadcast(""); /* just print last msg */ 139 } 140 (void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", 141 attnmessage); 142 } 143 signal(SIGALRM, alarmcatch); 144 (void) alarm(120); 145 timeout = 1; 146 } 147 148 /* 149 * Here if an inquisitive operator interrupts the dump program 150 */ 151 void 152 interrupt(int signo __unused) 153 { 154 msg("Interrupt received.\n"); 155 if (query("Do you want to abort dump?")) 156 dumpabort(0); 157 } 158 159 /* 160 * We now use wall(1) to do the actual broadcasting. 161 */ 162 void 163 broadcast(const char *message) 164 { 165 FILE *fp; 166 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 167 168 if (!notify) 169 return; 170 171 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 172 if ((fp = popen(buf, "w")) == NULL) 173 return; 174 175 (void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 176 if (lastmsg[0]) 177 (void) fputs(lastmsg, fp); 178 if (message[0]) 179 (void) fputs(message, fp); 180 181 (void) pclose(fp); 182 } 183 184 /* 185 * Print out an estimate of the amount of time left to do the dump 186 */ 187 188 time_t tschedule = 0; 189 190 void 191 timeest(void) 192 { 193 double percent; 194 time_t tnow, tdone; 195 char *tdone_str; 196 int deltat, hours, mins; 197 198 (void)time(&tnow); 199 if (blockswritten > tapesize) { 200 setproctitle("%s: 99.99%% done, finished soon", disk); 201 if (tnow >= tschedule) { 202 tschedule = tnow + 300; 203 msg("99.99%% done, finished soon\n"); 204 } 205 } else { 206 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 207 (double)(tnow - tstart_writing) / blockswritten * tapesize; 208 tdone = tnow + deltat; 209 percent = (blockswritten * 100.0) / tapesize; 210 hours = deltat / 3600; 211 mins = (deltat % 3600) / 60; 212 213 tdone_str = ctime(&tdone); 214 tdone_str[strlen(tdone_str) - 1] = '\0'; 215 setproctitle( 216 "%s: pass %d: %3.2f%% done, finished in %d:%02d at %s", 217 disk, passno, percent, hours, mins, tdone_str); 218 if (tnow >= tschedule) { 219 tschedule = tnow + 300; 220 if (blockswritten < 500) 221 return; 222 msg("%3.2f%% done, finished in %d:%02d at %s\n", percent, 223 hours, mins, tdone_str); 224 } 225 } 226 } 227 228 /* 229 * Schedule a printout of the estimate in the next call to timeest(). 230 */ 231 void 232 infosch(int signal __unused) 233 { 234 tschedule = 0; 235 } 236 237 void 238 msg(const char *fmt, ...) 239 { 240 va_list ap; 241 242 (void) fprintf(stderr," DUMP: "); 243 #ifdef TDEBUG 244 (void) fprintf(stderr, "pid=%d ", getpid()); 245 #endif 246 va_start(ap, fmt); 247 (void) vfprintf(stderr, fmt, ap); 248 va_end(ap); 249 (void) fflush(stdout); 250 (void) fflush(stderr); 251 va_start(ap, fmt); 252 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 253 va_end(ap); 254 } 255 256 void 257 msgtail(const char *fmt, ...) 258 { 259 va_list ap; 260 261 va_start(ap, fmt); 262 (void) vfprintf(stderr, fmt, ap); 263 va_end(ap); 264 } 265 266 void 267 quit(const char *fmt, ...) 268 { 269 va_list ap; 270 271 (void) fprintf(stderr," DUMP: "); 272 #ifdef TDEBUG 273 (void) fprintf(stderr, "pid=%d ", getpid()); 274 #endif 275 va_start(ap, fmt); 276 (void) vfprintf(stderr, fmt, ap); 277 va_end(ap); 278 (void) fflush(stdout); 279 (void) fflush(stderr); 280 dumpabort(0); 281 } 282 283 /* 284 * Tell the operator what has to be done; 285 * we don't actually do it 286 */ 287 288 struct fstab * 289 allocfsent(const struct fstab *fs) 290 { 291 struct fstab *new; 292 293 new = (struct fstab *)malloc(sizeof (*fs)); 294 if (new == NULL || 295 (new->fs_file = strdup(fs->fs_file)) == NULL || 296 (new->fs_type = strdup(fs->fs_type)) == NULL || 297 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 298 quit("%s\n", strerror(errno)); 299 new->fs_passno = fs->fs_passno; 300 new->fs_freq = fs->fs_freq; 301 return (new); 302 } 303 304 struct pfstab { 305 SLIST_ENTRY(pfstab) pf_list; 306 struct fstab *pf_fstab; 307 }; 308 309 static SLIST_HEAD(, pfstab) table; 310 311 void 312 dump_getfstab(void) 313 { 314 struct fstab *fs; 315 struct pfstab *pf; 316 317 if (setfsent() == 0) { 318 msg("Can't open %s for dump table information: %s\n", 319 _PATH_FSTAB, strerror(errno)); 320 return; 321 } 322 while ((fs = getfsent()) != NULL) { 323 if ((strcmp(fs->fs_type, FSTAB_RW) && 324 strcmp(fs->fs_type, FSTAB_RO) && 325 strcmp(fs->fs_type, FSTAB_RQ)) || 326 strcmp(fs->fs_vfstype, "ufs")) 327 continue; 328 fs = allocfsent(fs); 329 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 330 quit("%s\n", strerror(errno)); 331 pf->pf_fstab = fs; 332 SLIST_INSERT_HEAD(&table, pf, pf_list); 333 } 334 (void) endfsent(); 335 } 336 337 /* 338 * Search in the fstab for a file name. 339 * This file name can be either the special or the path file name. 340 * 341 * The file name can omit the leading '/'. 342 */ 343 struct fstab * 344 fstabsearch(const char *key) 345 { 346 struct pfstab *pf; 347 struct fstab *fs; 348 char *rn; 349 350 SLIST_FOREACH(pf, &table, pf_list) { 351 fs = pf->pf_fstab; 352 if (strcmp(fs->fs_file, key) == 0 || 353 strcmp(fs->fs_spec, key) == 0) 354 return (fs); 355 rn = rawname(fs->fs_spec); 356 if (rn != NULL && strcmp(rn, key) == 0) 357 return (fs); 358 if (key[0] != '/') { 359 if (*fs->fs_spec == '/' && 360 strcmp(fs->fs_spec + 1, key) == 0) 361 return (fs); 362 if (*fs->fs_file == '/' && 363 strcmp(fs->fs_file + 1, key) == 0) 364 return (fs); 365 } 366 } 367 return (NULL); 368 } 369 370 /* 371 * Tell the operator what to do 372 */ 373 void 374 lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */ 375 { 376 int i; 377 struct fstab *dt; 378 struct dumpdates *dtwalk; 379 char *lastname, *date; 380 int dumpme; 381 time_t tnow; 382 struct tm *tlast; 383 384 (void) time(&tnow); 385 dump_getfstab(); /* /etc/fstab input */ 386 initdumptimes(); /* /etc/dumpdates input */ 387 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 388 389 if (arg == 'w') 390 (void) printf("Dump these file systems:\n"); 391 else 392 (void) printf("Last dump(s) done (Dump '>' file systems):\n"); 393 lastname = "??"; 394 ITITERATE(i, dtwalk) { 395 if (strncmp(lastname, dtwalk->dd_name, 396 sizeof(dtwalk->dd_name)) == 0) 397 continue; 398 date = (char *)ctime(&dtwalk->dd_ddate); 399 date[16] = '\0'; /* blast away seconds and year */ 400 lastname = dtwalk->dd_name; 401 dt = fstabsearch(dtwalk->dd_name); 402 dumpme = (dt != NULL && dt->fs_freq != 0); 403 if (dumpme) { 404 tlast = localtime(&dtwalk->dd_ddate); 405 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 406 - (tlast->tm_min * 60) - tlast->tm_sec 407 + (dt->fs_freq * 86400)); 408 } 409 if (arg != 'w' || dumpme) 410 (void) printf( 411 "%c %8s\t(%6s) Last dump: Level %d, Date %s\n", 412 dumpme && (arg != 'w') ? '>' : ' ', 413 dtwalk->dd_name, 414 dt ? dt->fs_file : "", 415 dtwalk->dd_level, 416 date); 417 } 418 } 419 420 int 421 datesort(const void *a1, const void *a2) 422 { 423 struct dumpdates *d1 = *(struct dumpdates **)a1; 424 struct dumpdates *d2 = *(struct dumpdates **)a2; 425 int diff; 426 427 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 428 if (diff == 0) 429 return (d2->dd_ddate - d1->dd_ddate); 430 return (diff); 431 } 432