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 * @(#)optr.c 8.2 (Berkeley) 1/6/94 34 * $FreeBSD: src/sbin/dump/optr.c,v 1.9.2.5 2002/02/23 22:32:51 iedowse Exp $ 35 * $DragonFly: src/sbin/dump/optr.c,v 1.4 2003/11/01 17:15:58 drhodus Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/queue.h> 40 #include <sys/wait.h> 41 #include <sys/time.h> 42 43 #include <errno.h> 44 #include <fstab.h> 45 #include <grp.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <stdarg.h> 50 #include <signal.h> 51 #include <unistd.h> 52 #include <utmp.h> 53 54 #include "dump.h" 55 #include "pathnames.h" 56 57 void alarmcatch(/* int, int */); 58 int datesort(const void *, const void *); 59 60 /* 61 * Query the operator; This previously-fascist piece of code 62 * no longer requires an exact response. 63 * It is intended to protect dump aborting by inquisitive 64 * people banging on the console terminal to see what is 65 * happening which might cause dump to croak, destroying 66 * a large number of hours of work. 67 * 68 * Every 2 minutes we reprint the message, alerting others 69 * that dump needs attention. 70 */ 71 static int timeout; 72 static char *attnmessage; /* attention message */ 73 74 int 75 query(char *question) 76 { 77 char replybuffer[64]; 78 int back, errcount; 79 FILE *mytty; 80 81 if ((mytty = fopen(_PATH_TTY, "r")) == NULL) 82 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno)); 83 attnmessage = question; 84 timeout = 0; 85 alarmcatch(); 86 back = -1; 87 errcount = 0; 88 do { 89 if (fgets(replybuffer, 63, mytty) == NULL) { 90 clearerr(mytty); 91 if (++errcount > 30) /* XXX ugly */ 92 quit("excessive operator query failures\n"); 93 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') { 94 back = 1; 95 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') { 96 back = 0; 97 } else { 98 (void) fprintf(stderr, 99 " DUMP: \"Yes\" or \"No\"?\n"); 100 (void) fprintf(stderr, 101 " DUMP: %s: (\"yes\" or \"no\") ", question); 102 } 103 } while (back < 0); 104 105 /* 106 * Turn off the alarm, and reset the signal to trap out.. 107 */ 108 (void) alarm(0); 109 if (signal(SIGALRM, sig) == SIG_IGN) 110 signal(SIGALRM, SIG_IGN); 111 (void) fclose(mytty); 112 return(back); 113 } 114 115 char lastmsg[BUFSIZ]; 116 117 /* 118 * Alert the console operator, and enable the alarm clock to 119 * sleep for 2 minutes in case nobody comes to satisfy dump 120 */ 121 void 122 alarmcatch() 123 { 124 if (notify == 0) { 125 if (timeout == 0) 126 (void) fprintf(stderr, 127 " DUMP: %s: (\"yes\" or \"no\") ", 128 attnmessage); 129 else 130 msgtail("\a\a"); 131 } else { 132 if (timeout) { 133 msgtail("\n"); 134 broadcast(""); /* just print last msg */ 135 } 136 (void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", 137 attnmessage); 138 } 139 signal(SIGALRM, alarmcatch); 140 (void) alarm(120); 141 timeout = 1; 142 } 143 144 /* 145 * Here if an inquisitive operator interrupts the dump program 146 */ 147 void 148 interrupt(int signo) 149 { 150 msg("Interrupt received.\n"); 151 if (query("Do you want to abort dump?")) 152 dumpabort(0); 153 } 154 155 /* 156 * We now use wall(1) to do the actual broadcasting. 157 */ 158 void 159 broadcast(char *message) 160 { 161 FILE *fp; 162 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 163 164 if (!notify) 165 return; 166 167 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 168 if ((fp = popen(buf, "w")) == NULL) 169 return; 170 171 (void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 172 if (lastmsg[0]) 173 (void) fputs(lastmsg, fp); 174 if (message[0]) 175 (void) fputs(message, fp); 176 177 (void) pclose(fp); 178 } 179 180 /* 181 * Print out an estimate of the amount of time left to do the dump 182 */ 183 184 time_t tschedule = 0; 185 186 void 187 timeest(void) 188 { 189 double percent; 190 time_t tnow; 191 int deltat, hours, mins; 192 193 (void) time(&tnow); 194 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 195 (double)(tnow - tstart_writing) / blockswritten * tapesize; 196 percent = (blockswritten * 100.0) / tapesize; 197 hours = deltat / 3600; 198 mins = (deltat % 3600) / 60; 199 200 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d", 201 disk, passno, percent, hours, mins); 202 if (tnow >= tschedule) { 203 tschedule = tnow + 300; 204 if (blockswritten < 500) 205 return; 206 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours, 207 mins); 208 } 209 } 210 211 /* 212 * Schedule a printout of the estimate in the next call to timeest(). 213 */ 214 void 215 infosch(int signal) 216 { 217 tschedule = 0; 218 } 219 220 void 221 msg(const char *fmt, ...) 222 { 223 va_list ap; 224 225 (void) fprintf(stderr," DUMP: "); 226 #ifdef TDEBUG 227 (void) fprintf(stderr, "pid=%d ", getpid()); 228 #endif 229 va_start(ap, fmt); 230 (void) vfprintf(stderr, fmt, ap); 231 (void) fflush(stdout); 232 (void) fflush(stderr); 233 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 234 va_end(ap); 235 } 236 237 void 238 msgtail(const char *fmt, ...) 239 { 240 va_list ap; 241 242 va_start(ap, fmt); 243 (void) vfprintf(stderr, fmt, ap); 244 va_end(ap); 245 } 246 247 void 248 quit(const char *fmt, ...) 249 { 250 va_list ap; 251 252 (void) fprintf(stderr," DUMP: "); 253 #ifdef TDEBUG 254 (void) fprintf(stderr, "pid=%d ", getpid()); 255 #endif 256 va_start(ap, fmt); 257 (void) vfprintf(stderr, fmt, ap); 258 va_end(ap); 259 (void) fflush(stdout); 260 (void) fflush(stderr); 261 dumpabort(0); 262 } 263 264 /* 265 * Tell the operator what has to be done; 266 * we don't actually do it 267 */ 268 269 struct fstab * 270 allocfsent(register struct fstab *fs) 271 { 272 register struct fstab *new; 273 274 new = (struct fstab *)malloc(sizeof (*fs)); 275 if (new == NULL || 276 (new->fs_file = strdup(fs->fs_file)) == NULL || 277 (new->fs_type = strdup(fs->fs_type)) == NULL || 278 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 279 quit("%s\n", strerror(errno)); 280 new->fs_passno = fs->fs_passno; 281 new->fs_freq = fs->fs_freq; 282 return (new); 283 } 284 285 struct pfstab { 286 SLIST_ENTRY(pfstab) pf_list; 287 struct fstab *pf_fstab; 288 }; 289 290 static SLIST_HEAD(, pfstab) table; 291 292 void 293 getfstab(void) 294 { 295 register struct fstab *fs; 296 register struct pfstab *pf; 297 298 if (setfsent() == 0) { 299 msg("Can't open %s for dump table information: %s\n", 300 _PATH_FSTAB, strerror(errno)); 301 return; 302 } 303 while ((fs = getfsent()) != NULL) { 304 if (strcmp(fs->fs_type, FSTAB_RW) && 305 strcmp(fs->fs_type, FSTAB_RO) && 306 strcmp(fs->fs_type, FSTAB_RQ)) 307 continue; 308 fs = allocfsent(fs); 309 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 310 quit("%s\n", strerror(errno)); 311 pf->pf_fstab = fs; 312 SLIST_INSERT_HEAD(&table, pf, pf_list); 313 } 314 (void) endfsent(); 315 } 316 317 /* 318 * Search in the fstab for a file name. 319 * This file name can be either the special or the path file name. 320 * 321 * The file name can omit the leading '/'. 322 */ 323 struct fstab * 324 fstabsearch(char *key) 325 { 326 register struct pfstab *pf; 327 register struct fstab *fs; 328 char *rn; 329 330 SLIST_FOREACH(pf, &table, pf_list) { 331 fs = pf->pf_fstab; 332 if (strcmp(fs->fs_file, key) == 0 || 333 strcmp(fs->fs_spec, key) == 0) 334 return (fs); 335 rn = rawname(fs->fs_spec); 336 if (rn != NULL && strcmp(rn, key) == 0) 337 return (fs); 338 if (key[0] != '/') { 339 if (*fs->fs_spec == '/' && 340 strcmp(fs->fs_spec + 1, key) == 0) 341 return (fs); 342 if (*fs->fs_file == '/' && 343 strcmp(fs->fs_file + 1, key) == 0) 344 return (fs); 345 } 346 } 347 return (NULL); 348 } 349 350 /* 351 * Tell the operator what to do 352 * 353 * char arg: w ==> just what to do; W ==> most recent dumps 354 */ 355 void 356 lastdump(int arg) 357 { 358 register int i; 359 register struct fstab *dt; 360 register struct dumpdates *dtwalk; 361 char *lastname, *date; 362 int dumpme; 363 time_t tnow; 364 struct tm *tlast; 365 366 (void) time(&tnow); 367 getfstab(); /* /etc/fstab input */ 368 initdumptimes(); /* /etc/dumpdates input */ 369 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 370 371 if (arg == 'w') 372 (void) printf("Dump these file systems:\n"); 373 else 374 (void) printf("Last dump(s) done (Dump '>' file systems):\n"); 375 lastname = "??"; 376 ITITERATE(i, dtwalk) { 377 if (strncmp(lastname, dtwalk->dd_name, 378 sizeof(dtwalk->dd_name)) == 0) 379 continue; 380 date = (char *)ctime(&dtwalk->dd_ddate); 381 date[16] = '\0'; /* blast away seconds and year */ 382 lastname = dtwalk->dd_name; 383 dt = fstabsearch(dtwalk->dd_name); 384 dumpme = (dt != NULL && dt->fs_freq != 0); 385 if (dumpme) { 386 tlast = localtime(&dtwalk->dd_ddate); 387 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 388 - (tlast->tm_min * 60) - tlast->tm_sec 389 + (dt->fs_freq * 86400)); 390 }; 391 if (arg != 'w' || dumpme) 392 (void) printf( 393 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", 394 dumpme && (arg != 'w') ? '>' : ' ', 395 dtwalk->dd_name, 396 dt ? dt->fs_file : "", 397 dtwalk->dd_level, 398 date); 399 } 400 } 401 402 int 403 datesort(const void *a1, const void *a2) 404 { 405 struct dumpdates *d1 = *(struct dumpdates **)a1; 406 struct dumpdates *d2 = *(struct dumpdates **)a2; 407 int diff; 408 409 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 410 if (diff == 0) 411 return (d2->dd_ddate - d1->dd_ddate); 412 return (diff); 413 } 414