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 "$FreeBSD$"; 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(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; 195 int deltat, hours, mins; 196 197 (void) time(&tnow); 198 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 199 (double)(tnow - tstart_writing) / blockswritten * tapesize; 200 percent = (blockswritten * 100.0) / tapesize; 201 hours = deltat / 3600; 202 mins = (deltat % 3600) / 60; 203 204 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d", 205 disk, passno, percent, hours, mins); 206 if (tnow >= tschedule) { 207 tschedule = tnow + 300; 208 if (blockswritten < 500) 209 return; 210 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours, 211 mins); 212 } 213 } 214 215 /* 216 * Schedule a printout of the estimate in the next call to timeest(). 217 */ 218 void 219 infosch(int signal __unused) 220 { 221 tschedule = 0; 222 } 223 224 void 225 msg(const char *fmt, ...) 226 { 227 va_list ap; 228 229 (void) fprintf(stderr," DUMP: "); 230 #ifdef TDEBUG 231 (void) fprintf(stderr, "pid=%d ", getpid()); 232 #endif 233 va_start(ap, fmt); 234 (void) vfprintf(stderr, fmt, ap); 235 (void) fflush(stdout); 236 (void) fflush(stderr); 237 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 238 va_end(ap); 239 } 240 241 void 242 msgtail(const char *fmt, ...) 243 { 244 va_list ap; 245 va_start(ap, fmt); 246 (void) vfprintf(stderr, fmt, ap); 247 va_end(ap); 248 } 249 250 void 251 quit(const char *fmt, ...) 252 { 253 va_list ap; 254 255 (void) fprintf(stderr," DUMP: "); 256 #ifdef TDEBUG 257 (void) fprintf(stderr, "pid=%d ", getpid()); 258 #endif 259 va_start(ap, fmt); 260 (void) vfprintf(stderr, fmt, ap); 261 va_end(ap); 262 (void) fflush(stdout); 263 (void) fflush(stderr); 264 dumpabort(0); 265 } 266 267 /* 268 * Tell the operator what has to be done; 269 * we don't actually do it 270 */ 271 272 struct fstab * 273 allocfsent(const struct fstab *fs) 274 { 275 struct fstab *new; 276 277 new = (struct fstab *)malloc(sizeof (*fs)); 278 if (new == NULL || 279 (new->fs_file = strdup(fs->fs_file)) == NULL || 280 (new->fs_type = strdup(fs->fs_type)) == NULL || 281 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 282 quit("%s\n", strerror(errno)); 283 new->fs_passno = fs->fs_passno; 284 new->fs_freq = fs->fs_freq; 285 return (new); 286 } 287 288 struct pfstab { 289 SLIST_ENTRY(pfstab) pf_list; 290 struct fstab *pf_fstab; 291 }; 292 293 static SLIST_HEAD(, pfstab) table; 294 295 void 296 getfstab(void) 297 { 298 struct fstab *fs; 299 struct pfstab *pf; 300 301 if (setfsent() == 0) { 302 msg("Can't open %s for dump table information: %s\n", 303 _PATH_FSTAB, strerror(errno)); 304 return; 305 } 306 while ((fs = getfsent()) != NULL) { 307 if (strcmp(fs->fs_type, FSTAB_RW) && 308 strcmp(fs->fs_type, FSTAB_RO) && 309 strcmp(fs->fs_type, FSTAB_RQ)) 310 continue; 311 fs = allocfsent(fs); 312 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 313 quit("%s\n", strerror(errno)); 314 pf->pf_fstab = fs; 315 SLIST_INSERT_HEAD(&table, pf, pf_list); 316 } 317 (void) endfsent(); 318 } 319 320 /* 321 * Search in the fstab for a file name. 322 * This file name can be either the special or the path file name. 323 * 324 * The file name can omit the leading '/'. 325 */ 326 struct fstab * 327 fstabsearch(const char *key) 328 { 329 struct pfstab *pf; 330 struct fstab *fs; 331 char *rn; 332 333 SLIST_FOREACH(pf, &table, pf_list) { 334 fs = pf->pf_fstab; 335 if (strcmp(fs->fs_file, key) == 0 || 336 strcmp(fs->fs_spec, key) == 0) 337 return (fs); 338 rn = rawname(fs->fs_spec); 339 if (rn != NULL && strcmp(rn, key) == 0) 340 return (fs); 341 if (key[0] != '/') { 342 if (*fs->fs_spec == '/' && 343 strcmp(fs->fs_spec + 1, key) == 0) 344 return (fs); 345 if (*fs->fs_file == '/' && 346 strcmp(fs->fs_file + 1, key) == 0) 347 return (fs); 348 } 349 } 350 return (NULL); 351 } 352 353 /* 354 * Tell the operator what to do 355 */ 356 void 357 lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */ 358 { 359 int i; 360 struct fstab *dt; 361 struct dumpdates *dtwalk; 362 char *lastname, *date; 363 int dumpme; 364 time_t tnow; 365 struct tm *tlast; 366 367 (void) time(&tnow); 368 getfstab(); /* /etc/fstab input */ 369 initdumptimes(); /* /etc/dumpdates input */ 370 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 371 372 if (arg == 'w') 373 (void) printf("Dump these filesystems:\n"); 374 else 375 (void) printf("Last dump(s) done (Dump '>' filesystems):\n"); 376 lastname = "??"; 377 ITITERATE(i, dtwalk) { 378 if (strncmp(lastname, dtwalk->dd_name, 379 sizeof(dtwalk->dd_name)) == 0) 380 continue; 381 date = (char *)ctime(&dtwalk->dd_ddate); 382 date[16] = '\0'; /* blast away seconds and year */ 383 lastname = dtwalk->dd_name; 384 dt = fstabsearch(dtwalk->dd_name); 385 dumpme = (dt != NULL && dt->fs_freq != 0); 386 if (dumpme) { 387 tlast = localtime(&dtwalk->dd_ddate); 388 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 389 - (tlast->tm_min * 60) - tlast->tm_sec 390 + (dt->fs_freq * 86400)); 391 }; 392 if (arg != 'w' || dumpme) 393 (void) printf( 394 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", 395 dumpme && (arg != 'w') ? '>' : ' ', 396 dtwalk->dd_name, 397 dt ? dt->fs_file : "", 398 dtwalk->dd_level, 399 date); 400 } 401 } 402 403 int 404 datesort(const void *a1, const void *a2) 405 { 406 struct dumpdates *d1 = *(struct dumpdates **)a1; 407 struct dumpdates *d2 = *(struct dumpdates **)a2; 408 int diff; 409 410 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 411 if (diff == 0) 412 return (d2->dd_ddate - d1->dd_ddate); 413 return (diff); 414 } 415