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 if (blockswritten > tapesize) { 196 setproctitle("%s: 99.99%% done, finished soon", disk); 197 msg("99.99%% done, finished soon\n"); 198 } else { 199 (void) time(&tnow); 200 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 201 (double)(tnow - tstart_writing) / blockswritten * tapesize; 202 tdone = tnow + deltat; 203 percent = (blockswritten * 100.0) / tapesize; 204 hours = deltat / 3600; 205 mins = (deltat % 3600) / 60; 206 207 setproctitle( 208 "%s: pass %d: %3.2f%% done, finished in %d:%02d at %s", 209 disk, passno, percent, hours, mins, ctime(&tdone)); 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", percent, 215 hours, mins, ctime(&tdone)); 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 va_list ap2; 234 235 (void) fprintf(stderr," DUMP: "); 236 #ifdef TDEBUG 237 (void) fprintf(stderr, "pid=%d ", getpid()); 238 #endif 239 va_start(ap, fmt); 240 va_copy(ap2, ap); 241 (void) vfprintf(stderr, fmt, ap); 242 (void) fflush(stdout); 243 (void) fflush(stderr); 244 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap2); 245 va_end(ap); 246 va_end(ap2); 247 } 248 249 void 250 msgtail(const char *fmt, ...) 251 { 252 va_list ap; 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 continue; 319 fs = allocfsent(fs); 320 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 321 quit("%s\n", strerror(errno)); 322 pf->pf_fstab = fs; 323 SLIST_INSERT_HEAD(&table, pf, pf_list); 324 } 325 (void) endfsent(); 326 } 327 328 /* 329 * Search in the fstab for a file name. 330 * This file name can be either the special or the path file name. 331 * 332 * The file name can omit the leading '/'. 333 */ 334 struct fstab * 335 fstabsearch(const char *key) 336 { 337 struct pfstab *pf; 338 struct fstab *fs; 339 char *rn; 340 341 SLIST_FOREACH(pf, &table, pf_list) { 342 fs = pf->pf_fstab; 343 if (strcmp(fs->fs_file, key) == 0 || 344 strcmp(fs->fs_spec, key) == 0) 345 return (fs); 346 rn = rawname(fs->fs_spec); 347 if (rn != NULL && strcmp(rn, key) == 0) 348 return (fs); 349 if (key[0] != '/') { 350 if (*fs->fs_spec == '/' && 351 strcmp(fs->fs_spec + 1, key) == 0) 352 return (fs); 353 if (*fs->fs_file == '/' && 354 strcmp(fs->fs_file + 1, key) == 0) 355 return (fs); 356 } 357 } 358 return (NULL); 359 } 360 361 /* 362 * Tell the operator what to do 363 */ 364 void 365 lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */ 366 { 367 int i; 368 struct fstab *dt; 369 struct dumpdates *dtwalk; 370 char *lastname, *date; 371 int dumpme; 372 time_t tnow; 373 struct tm *tlast; 374 375 (void) time(&tnow); 376 dump_getfstab(); /* /etc/fstab input */ 377 initdumptimes(); /* /etc/dumpdates input */ 378 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 379 380 if (arg == 'w') 381 (void) printf("Dump these file systems:\n"); 382 else 383 (void) printf("Last dump(s) done (Dump '>' file systems):\n"); 384 lastname = "??"; 385 ITITERATE(i, dtwalk) { 386 if (strncmp(lastname, dtwalk->dd_name, 387 sizeof(dtwalk->dd_name)) == 0) 388 continue; 389 date = (char *)ctime(&dtwalk->dd_ddate); 390 date[16] = '\0'; /* blast away seconds and year */ 391 lastname = dtwalk->dd_name; 392 dt = fstabsearch(dtwalk->dd_name); 393 dumpme = (dt != NULL && dt->fs_freq != 0); 394 if (dumpme) { 395 tlast = localtime(&dtwalk->dd_ddate); 396 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 397 - (tlast->tm_min * 60) - tlast->tm_sec 398 + (dt->fs_freq * 86400)); 399 }; 400 if (arg != 'w' || dumpme) 401 (void) printf( 402 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", 403 dumpme && (arg != 'w') ? '>' : ' ', 404 dtwalk->dd_name, 405 dt ? dt->fs_file : "", 406 dtwalk->dd_level, 407 date); 408 } 409 } 410 411 int 412 datesort(const void *a1, const void *a2) 413 { 414 struct dumpdates *d1 = *(struct dumpdates **)a1; 415 struct dumpdates *d2 = *(struct dumpdates **)a2; 416 int diff; 417 418 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 419 if (diff == 0) 420 return (d2->dd_ddate - d1->dd_ddate); 421 return (diff); 422 } 423