1 /*- 2 * Copyright (c) 1980, 1988, 1993 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. 32 */ 33 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)optr.c 8.2 (Berkeley) 1/6/94"; 37 #endif 38 static const char rcsid[] = 39 "$FreeBSD: src/sbin/dump/optr.c,v 1.9.2.5 2002/02/23 22:32:51 iedowse Exp $"; 40 #endif /* not lint */ 41 42 #include <sys/param.h> 43 #include <sys/queue.h> 44 #include <sys/wait.h> 45 #include <sys/time.h> 46 47 #include <errno.h> 48 #include <fstab.h> 49 #include <grp.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <stdarg.h> 54 #include <signal.h> 55 #include <unistd.h> 56 #include <utmp.h> 57 58 #include "dump.h" 59 #include "pathnames.h" 60 61 void alarmcatch __P((/* int, int */)); 62 int datesort __P((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 char *attnmessage; /* attention message */ 77 78 int 79 query(question) 80 char *question; 81 { 82 char replybuffer[64]; 83 int back, errcount; 84 FILE *mytty; 85 86 if ((mytty = fopen(_PATH_TTY, "r")) == NULL) 87 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno)); 88 attnmessage = question; 89 timeout = 0; 90 alarmcatch(); 91 back = -1; 92 errcount = 0; 93 do { 94 if (fgets(replybuffer, 63, mytty) == NULL) { 95 clearerr(mytty); 96 if (++errcount > 30) /* XXX ugly */ 97 quit("excessive operator query failures\n"); 98 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') { 99 back = 1; 100 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') { 101 back = 0; 102 } else { 103 (void) fprintf(stderr, 104 " DUMP: \"Yes\" or \"No\"?\n"); 105 (void) fprintf(stderr, 106 " DUMP: %s: (\"yes\" or \"no\") ", question); 107 } 108 } while (back < 0); 109 110 /* 111 * Turn off the alarm, and reset the signal to trap out.. 112 */ 113 (void) alarm(0); 114 if (signal(SIGALRM, sig) == SIG_IGN) 115 signal(SIGALRM, SIG_IGN); 116 (void) fclose(mytty); 117 return(back); 118 } 119 120 char lastmsg[BUFSIZ]; 121 122 /* 123 * Alert the console operator, and enable the alarm clock to 124 * sleep for 2 minutes in case nobody comes to satisfy dump 125 */ 126 void 127 alarmcatch() 128 { 129 if (notify == 0) { 130 if (timeout == 0) 131 (void) fprintf(stderr, 132 " DUMP: %s: (\"yes\" or \"no\") ", 133 attnmessage); 134 else 135 msgtail("\a\a"); 136 } else { 137 if (timeout) { 138 msgtail("\n"); 139 broadcast(""); /* just print last msg */ 140 } 141 (void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", 142 attnmessage); 143 } 144 signal(SIGALRM, alarmcatch); 145 (void) alarm(120); 146 timeout = 1; 147 } 148 149 /* 150 * Here if an inquisitive operator interrupts the dump program 151 */ 152 void 153 interrupt(signo) 154 int signo; 155 { 156 msg("Interrupt received.\n"); 157 if (query("Do you want to abort dump?")) 158 dumpabort(0); 159 } 160 161 /* 162 * We now use wall(1) to do the actual broadcasting. 163 */ 164 void 165 broadcast(message) 166 char *message; 167 { 168 FILE *fp; 169 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 170 171 if (!notify) 172 return; 173 174 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 175 if ((fp = popen(buf, "w")) == NULL) 176 return; 177 178 (void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 179 if (lastmsg[0]) 180 (void) fputs(lastmsg, fp); 181 if (message[0]) 182 (void) fputs(message, fp); 183 184 (void) pclose(fp); 185 } 186 187 /* 188 * Print out an estimate of the amount of time left to do the dump 189 */ 190 191 time_t tschedule = 0; 192 193 void 194 timeest() 195 { 196 double percent; 197 time_t tnow; 198 int deltat, hours, mins; 199 200 (void) time(&tnow); 201 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 202 (double)(tnow - tstart_writing) / blockswritten * tapesize; 203 percent = (blockswritten * 100.0) / tapesize; 204 hours = deltat / 3600; 205 mins = (deltat % 3600) / 60; 206 207 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d", 208 disk, passno, percent, hours, mins); 209 if (tnow >= tschedule) { 210 tschedule = tnow + 300; 211 if (blockswritten < 500) 212 return; 213 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours, 214 mins); 215 } 216 } 217 218 /* 219 * Schedule a printout of the estimate in the next call to timeest(). 220 */ 221 void 222 infosch(signal) 223 int signal; 224 { 225 tschedule = 0; 226 } 227 228 void 229 #if __STDC__ 230 msg(const char *fmt, ...) 231 #else 232 msg(fmt, va_alist) 233 char *fmt; 234 va_dcl 235 #endif 236 { 237 va_list ap; 238 239 (void) fprintf(stderr," DUMP: "); 240 #ifdef TDEBUG 241 (void) fprintf(stderr, "pid=%d ", getpid()); 242 #endif 243 #if __STDC__ 244 va_start(ap, fmt); 245 #else 246 va_start(ap); 247 #endif 248 (void) vfprintf(stderr, fmt, ap); 249 (void) fflush(stdout); 250 (void) fflush(stderr); 251 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 252 va_end(ap); 253 } 254 255 void 256 #if __STDC__ 257 msgtail(const char *fmt, ...) 258 #else 259 msgtail(fmt, va_alist) 260 char *fmt; 261 va_dcl 262 #endif 263 { 264 va_list ap; 265 #if __STDC__ 266 va_start(ap, fmt); 267 #else 268 va_start(ap); 269 #endif 270 (void) vfprintf(stderr, fmt, ap); 271 va_end(ap); 272 } 273 274 void 275 #if __STDC__ 276 quit(const char *fmt, ...) 277 #else 278 quit(fmt, va_alist) 279 char *fmt; 280 va_dcl 281 #endif 282 { 283 va_list ap; 284 285 (void) fprintf(stderr," DUMP: "); 286 #ifdef TDEBUG 287 (void) fprintf(stderr, "pid=%d ", getpid()); 288 #endif 289 #if __STDC__ 290 va_start(ap, fmt); 291 #else 292 va_start(ap); 293 #endif 294 (void) vfprintf(stderr, fmt, ap); 295 va_end(ap); 296 (void) fflush(stdout); 297 (void) fflush(stderr); 298 dumpabort(0); 299 } 300 301 /* 302 * Tell the operator what has to be done; 303 * we don't actually do it 304 */ 305 306 struct fstab * 307 allocfsent(fs) 308 register struct fstab *fs; 309 { 310 register struct fstab *new; 311 312 new = (struct fstab *)malloc(sizeof (*fs)); 313 if (new == NULL || 314 (new->fs_file = strdup(fs->fs_file)) == NULL || 315 (new->fs_type = strdup(fs->fs_type)) == NULL || 316 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 317 quit("%s\n", strerror(errno)); 318 new->fs_passno = fs->fs_passno; 319 new->fs_freq = fs->fs_freq; 320 return (new); 321 } 322 323 struct pfstab { 324 SLIST_ENTRY(pfstab) pf_list; 325 struct fstab *pf_fstab; 326 }; 327 328 static SLIST_HEAD(, pfstab) table; 329 330 void 331 getfstab() 332 { 333 register struct fstab *fs; 334 register struct pfstab *pf; 335 336 if (setfsent() == 0) { 337 msg("Can't open %s for dump table information: %s\n", 338 _PATH_FSTAB, strerror(errno)); 339 return; 340 } 341 while ((fs = getfsent()) != NULL) { 342 if (strcmp(fs->fs_type, FSTAB_RW) && 343 strcmp(fs->fs_type, FSTAB_RO) && 344 strcmp(fs->fs_type, FSTAB_RQ)) 345 continue; 346 fs = allocfsent(fs); 347 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 348 quit("%s\n", strerror(errno)); 349 pf->pf_fstab = fs; 350 SLIST_INSERT_HEAD(&table, pf, pf_list); 351 } 352 (void) endfsent(); 353 } 354 355 /* 356 * Search in the fstab for a file name. 357 * This file name can be either the special or the path file name. 358 * 359 * The file name can omit the leading '/'. 360 */ 361 struct fstab * 362 fstabsearch(key) 363 char *key; 364 { 365 register struct pfstab *pf; 366 register struct fstab *fs; 367 char *rn; 368 369 SLIST_FOREACH(pf, &table, pf_list) { 370 fs = pf->pf_fstab; 371 if (strcmp(fs->fs_file, key) == 0 || 372 strcmp(fs->fs_spec, key) == 0) 373 return (fs); 374 rn = rawname(fs->fs_spec); 375 if (rn != NULL && strcmp(rn, key) == 0) 376 return (fs); 377 if (key[0] != '/') { 378 if (*fs->fs_spec == '/' && 379 strcmp(fs->fs_spec + 1, key) == 0) 380 return (fs); 381 if (*fs->fs_file == '/' && 382 strcmp(fs->fs_file + 1, key) == 0) 383 return (fs); 384 } 385 } 386 return (NULL); 387 } 388 389 /* 390 * Tell the operator what to do 391 */ 392 void 393 lastdump(arg) 394 char arg; /* w ==> just what to do; W ==> most recent dumps */ 395 { 396 register int i; 397 register struct fstab *dt; 398 register struct dumpdates *dtwalk; 399 char *lastname, *date; 400 int dumpme; 401 time_t tnow; 402 struct tm *tlast; 403 404 (void) time(&tnow); 405 getfstab(); /* /etc/fstab input */ 406 initdumptimes(); /* /etc/dumpdates input */ 407 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 408 409 if (arg == 'w') 410 (void) printf("Dump these file systems:\n"); 411 else 412 (void) printf("Last dump(s) done (Dump '>' file systems):\n"); 413 lastname = "??"; 414 ITITERATE(i, dtwalk) { 415 if (strncmp(lastname, dtwalk->dd_name, 416 sizeof(dtwalk->dd_name)) == 0) 417 continue; 418 date = (char *)ctime(&dtwalk->dd_ddate); 419 date[16] = '\0'; /* blast away seconds and year */ 420 lastname = dtwalk->dd_name; 421 dt = fstabsearch(dtwalk->dd_name); 422 dumpme = (dt != NULL && dt->fs_freq != 0); 423 if (dumpme) { 424 tlast = localtime(&dtwalk->dd_ddate); 425 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 426 - (tlast->tm_min * 60) - tlast->tm_sec 427 + (dt->fs_freq * 86400)); 428 }; 429 if (arg != 'w' || dumpme) 430 (void) printf( 431 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", 432 dumpme && (arg != 'w') ? '>' : ' ', 433 dtwalk->dd_name, 434 dt ? dt->fs_file : "", 435 dtwalk->dd_level, 436 date); 437 } 438 } 439 440 int 441 datesort(a1, a2) 442 const void *a1, *a2; 443 { 444 struct dumpdates *d1 = *(struct dumpdates **)a1; 445 struct dumpdates *d2 = *(struct dumpdates **)a2; 446 int diff; 447 448 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 449 if (diff == 0) 450 return (d2->dd_ddate - d1->dd_ddate); 451 return (diff); 452 } 453