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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 #if 0 32 static char sccsid[] = "@(#)optr.c 8.2 (Berkeley) 1/6/94"; 33 #endif 34 static const char rcsid[] = 35 "$FreeBSD$"; 36 #endif /* not lint */ 37 38 #include <sys/param.h> 39 #include <sys/queue.h> 40 #include <sys/wait.h> 41 #include <sys/time.h> 42 43 #include <ufs/ufs/dinode.h> 44 45 #include <errno.h> 46 #include <fstab.h> 47 #include <grp.h> 48 #include <limits.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <stdarg.h> 53 #include <signal.h> 54 #include <unistd.h> 55 56 #include "dump.h" 57 #include "pathnames.h" 58 59 void alarmcatch(int); 60 int datesort(const void *, const void *); 61 62 /* 63 * Query the operator; This previously-fascist piece of code 64 * no longer requires an exact response. 65 * It is intended to protect dump aborting by inquisitive 66 * people banging on the console terminal to see what is 67 * happening which might cause dump to croak, destroying 68 * a large number of hours of work. 69 * 70 * Every 2 minutes we reprint the message, alerting others 71 * that dump needs attention. 72 */ 73 static int timeout; 74 static const char *attnmessage; /* attention message */ 75 76 int 77 query(const char *question) 78 { 79 char replybuffer[64]; 80 int back, errcount; 81 FILE *mytty; 82 83 if ((mytty = fopen(_PATH_TTY, "r")) == NULL) 84 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno)); 85 attnmessage = question; 86 timeout = 0; 87 alarmcatch(0); 88 back = -1; 89 errcount = 0; 90 do { 91 if (fgets(replybuffer, 63, mytty) == NULL) { 92 clearerr(mytty); 93 if (++errcount > 30) /* XXX ugly */ 94 quit("excessive operator query failures\n"); 95 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') { 96 back = 1; 97 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') { 98 back = 0; 99 } else { 100 (void) fprintf(stderr, 101 " DUMP: \"Yes\" or \"No\"?\n"); 102 (void) fprintf(stderr, 103 " DUMP: %s: (\"yes\" or \"no\") ", question); 104 } 105 } while (back < 0); 106 107 /* 108 * Turn off the alarm, and reset the signal to trap out.. 109 */ 110 (void) alarm(0); 111 if (signal(SIGALRM, sig) == SIG_IGN) 112 signal(SIGALRM, SIG_IGN); 113 (void) fclose(mytty); 114 return(back); 115 } 116 117 char lastmsg[BUFSIZ]; 118 119 /* 120 * Alert the console operator, and enable the alarm clock to 121 * sleep for 2 minutes in case nobody comes to satisfy dump 122 */ 123 void 124 alarmcatch(int sig __unused) 125 { 126 if (notify == 0) { 127 if (timeout == 0) 128 (void) fprintf(stderr, 129 " DUMP: %s: (\"yes\" or \"no\") ", 130 attnmessage); 131 else 132 msgtail("\a\a"); 133 } else { 134 if (timeout) { 135 msgtail("\n"); 136 broadcast(""); /* just print last msg */ 137 } 138 (void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", 139 attnmessage); 140 } 141 signal(SIGALRM, alarmcatch); 142 (void) alarm(120); 143 timeout = 1; 144 } 145 146 /* 147 * Here if an inquisitive operator interrupts the dump program 148 */ 149 void 150 interrupt(int signo __unused) 151 { 152 msg("Interrupt received.\n"); 153 if (query("Do you want to abort dump?")) 154 dumpabort(0); 155 } 156 157 /* 158 * We now use wall(1) to do the actual broadcasting. 159 */ 160 void 161 broadcast(const char *message) 162 { 163 FILE *fp; 164 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 165 166 if (!notify) 167 return; 168 169 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 170 if ((fp = popen(buf, "w")) == NULL) 171 return; 172 173 (void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 174 if (lastmsg[0]) 175 (void) fputs(lastmsg, fp); 176 if (message[0]) 177 (void) fputs(message, fp); 178 179 (void) pclose(fp); 180 } 181 182 /* 183 * Print out an estimate of the amount of time left to do the dump 184 */ 185 186 time_t tschedule = 0; 187 188 void 189 timeest(void) 190 { 191 double percent; 192 time_t tnow, tdone; 193 int deltat, hours, mins; 194 195 (void)time(&tnow); 196 if (blockswritten > tapesize) { 197 setproctitle("%s: 99.99%% done, finished soon", disk); 198 if (tnow >= tschedule) { 199 tschedule = tnow + 300; 200 msg("99.99%% done, finished soon\n"); 201 } 202 } else { 203 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 204 (double)(tnow - tstart_writing) / blockswritten * tapesize; 205 tdone = tnow + deltat; 206 percent = (blockswritten * 100.0) / tapesize; 207 hours = deltat / 3600; 208 mins = (deltat % 3600) / 60; 209 210 setproctitle( 211 "%s: pass %d: %3.2f%% done, finished in %d:%02d at %s", 212 disk, passno, percent, hours, mins, ctime(&tdone)); 213 if (tnow >= tschedule) { 214 tschedule = tnow + 300; 215 if (blockswritten < 500) 216 return; 217 msg("%3.2f%% done, finished in %d:%02d at %s", percent, 218 hours, mins, ctime(&tdone)); 219 } 220 } 221 } 222 223 /* 224 * Schedule a printout of the estimate in the next call to timeest(). 225 */ 226 void 227 infosch(int signal __unused) 228 { 229 tschedule = 0; 230 } 231 232 void 233 msg(const char *fmt, ...) 234 { 235 va_list ap; 236 237 (void) fprintf(stderr," DUMP: "); 238 #ifdef TDEBUG 239 (void) fprintf(stderr, "pid=%d ", getpid()); 240 #endif 241 va_start(ap, fmt); 242 (void) vfprintf(stderr, fmt, ap); 243 (void) fflush(stdout); 244 (void) fflush(stderr); 245 va_end(ap); 246 va_start(ap, fmt); 247 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 248 va_end(ap); 249 } 250 251 void 252 msgtail(const char *fmt, ...) 253 { 254 va_list ap; 255 va_start(ap, fmt); 256 (void) vfprintf(stderr, fmt, ap); 257 va_end(ap); 258 } 259 260 void 261 quit(const char *fmt, ...) 262 { 263 va_list ap; 264 265 (void) fprintf(stderr," DUMP: "); 266 #ifdef TDEBUG 267 (void) fprintf(stderr, "pid=%d ", getpid()); 268 #endif 269 va_start(ap, fmt); 270 (void) vfprintf(stderr, fmt, ap); 271 va_end(ap); 272 (void) fflush(stdout); 273 (void) fflush(stderr); 274 dumpabort(0); 275 } 276 277 /* 278 * Tell the operator what has to be done; 279 * we don't actually do it 280 */ 281 282 struct fstab * 283 allocfsent(const struct fstab *fs) 284 { 285 struct fstab *new; 286 287 new = (struct fstab *)malloc(sizeof (*fs)); 288 if (new == NULL || 289 (new->fs_file = strdup(fs->fs_file)) == NULL || 290 (new->fs_type = strdup(fs->fs_type)) == NULL || 291 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 292 quit("%s\n", strerror(errno)); 293 new->fs_passno = fs->fs_passno; 294 new->fs_freq = fs->fs_freq; 295 return (new); 296 } 297 298 struct pfstab { 299 SLIST_ENTRY(pfstab) pf_list; 300 struct fstab *pf_fstab; 301 }; 302 303 static SLIST_HEAD(, pfstab) table; 304 305 void 306 dump_getfstab(void) 307 { 308 struct fstab *fs; 309 struct pfstab *pf; 310 311 if (setfsent() == 0) { 312 msg("Can't open %s for dump table information: %s\n", 313 _PATH_FSTAB, strerror(errno)); 314 return; 315 } 316 while ((fs = getfsent()) != NULL) { 317 if (strcmp(fs->fs_type, FSTAB_RW) && 318 strcmp(fs->fs_type, FSTAB_RO) && 319 strcmp(fs->fs_type, FSTAB_RQ)) 320 continue; 321 fs = allocfsent(fs); 322 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 323 quit("%s\n", strerror(errno)); 324 pf->pf_fstab = fs; 325 SLIST_INSERT_HEAD(&table, pf, pf_list); 326 } 327 (void) endfsent(); 328 } 329 330 /* 331 * Search in the fstab for a file name. 332 * This file name can be either the special or the path file name. 333 * 334 * The file name can omit the leading '/'. 335 */ 336 struct fstab * 337 fstabsearch(const char *key) 338 { 339 struct pfstab *pf; 340 struct fstab *fs; 341 char *rn; 342 343 SLIST_FOREACH(pf, &table, pf_list) { 344 fs = pf->pf_fstab; 345 if (strcmp(fs->fs_file, key) == 0 || 346 strcmp(fs->fs_spec, key) == 0) 347 return (fs); 348 rn = rawname(fs->fs_spec); 349 if (rn != NULL && strcmp(rn, key) == 0) 350 return (fs); 351 if (key[0] != '/') { 352 if (*fs->fs_spec == '/' && 353 strcmp(fs->fs_spec + 1, key) == 0) 354 return (fs); 355 if (*fs->fs_file == '/' && 356 strcmp(fs->fs_file + 1, key) == 0) 357 return (fs); 358 } 359 } 360 return (NULL); 361 } 362 363 /* 364 * Tell the operator what to do 365 */ 366 void 367 lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */ 368 { 369 int i; 370 struct fstab *dt; 371 struct dumpdates *dtwalk; 372 char *lastname, *date; 373 int dumpme; 374 time_t tnow; 375 struct tm *tlast; 376 377 (void) time(&tnow); 378 dump_getfstab(); /* /etc/fstab input */ 379 initdumptimes(); /* /etc/dumpdates input */ 380 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 381 382 if (arg == 'w') 383 (void) printf("Dump these file systems:\n"); 384 else 385 (void) printf("Last dump(s) done (Dump '>' file systems):\n"); 386 lastname = "??"; 387 ITITERATE(i, dtwalk) { 388 if (strncmp(lastname, dtwalk->dd_name, 389 sizeof(dtwalk->dd_name)) == 0) 390 continue; 391 date = (char *)ctime(&dtwalk->dd_ddate); 392 date[16] = '\0'; /* blast away seconds and year */ 393 lastname = dtwalk->dd_name; 394 dt = fstabsearch(dtwalk->dd_name); 395 dumpme = (dt != NULL && dt->fs_freq != 0); 396 if (dumpme) { 397 tlast = localtime(&dtwalk->dd_ddate); 398 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 399 - (tlast->tm_min * 60) - tlast->tm_sec 400 + (dt->fs_freq * 86400)); 401 }; 402 if (arg != 'w' || dumpme) 403 (void) printf( 404 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", 405 dumpme && (arg != 'w') ? '>' : ' ', 406 dtwalk->dd_name, 407 dt ? dt->fs_file : "", 408 dtwalk->dd_level, 409 date); 410 } 411 } 412 413 int 414 datesort(const void *a1, const void *a2) 415 { 416 struct dumpdates *d1 = *(struct dumpdates **)a1; 417 struct dumpdates *d2 = *(struct dumpdates **)a2; 418 int diff; 419 420 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 421 if (diff == 0) 422 return (d2->dd_ddate - d1->dd_ddate); 423 return (diff); 424 } 425