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 <ufs/ufs/dinode.h> 48 49 #include <errno.h> 50 #include <fstab.h> 51 #include <grp.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <stdarg.h> 56 #include <signal.h> 57 #include <unistd.h> 58 59 #include "dump.h" 60 #include "pathnames.h" 61 62 void alarmcatch(int); 63 int datesort(const void *, const void *); 64 65 /* 66 * Query the operator; This previously-fascist piece of code 67 * no longer requires an exact response. 68 * It is intended to protect dump aborting by inquisitive 69 * people banging on the console terminal to see what is 70 * happening which might cause dump to croak, destroying 71 * a large number of hours of work. 72 * 73 * Every 2 minutes we reprint the message, alerting others 74 * that dump needs attention. 75 */ 76 static int timeout; 77 static const char *attnmessage; /* attention message */ 78 79 int 80 query(const 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(0); 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(int sig __unused) 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(int signo __unused) 154 { 155 msg("Interrupt received.\n"); 156 if (query("Do you want to abort dump?")) 157 dumpabort(0); 158 } 159 160 /* 161 * We now use wall(1) to do the actual broadcasting. 162 */ 163 void 164 broadcast(const char *message) 165 { 166 FILE *fp; 167 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 168 169 if (!notify) 170 return; 171 172 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 173 if ((fp = popen(buf, "w")) == NULL) 174 return; 175 176 (void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 177 if (lastmsg[0]) 178 (void) fputs(lastmsg, fp); 179 if (message[0]) 180 (void) fputs(message, fp); 181 182 (void) pclose(fp); 183 } 184 185 /* 186 * Print out an estimate of the amount of time left to do the dump 187 */ 188 189 time_t tschedule = 0; 190 191 void 192 timeest(void) 193 { 194 double percent; 195 time_t tnow; 196 int deltat, hours, mins; 197 198 (void) time(&tnow); 199 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 200 (double)(tnow - tstart_writing) / blockswritten * tapesize; 201 percent = (blockswritten * 100.0) / tapesize; 202 hours = deltat / 3600; 203 mins = (deltat % 3600) / 60; 204 205 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d", 206 disk, passno, percent, hours, mins); 207 if (tnow >= tschedule) { 208 tschedule = tnow + 300; 209 if (blockswritten < 500) 210 return; 211 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours, 212 mins); 213 } 214 } 215 216 /* 217 * Schedule a printout of the estimate in the next call to timeest(). 218 */ 219 void 220 infosch(int signal __unused) 221 { 222 tschedule = 0; 223 } 224 225 void 226 msg(const char *fmt, ...) 227 { 228 va_list ap; 229 230 (void) fprintf(stderr," DUMP: "); 231 #ifdef TDEBUG 232 (void) fprintf(stderr, "pid=%d ", getpid()); 233 #endif 234 va_start(ap, fmt); 235 (void) vfprintf(stderr, fmt, ap); 236 (void) fflush(stdout); 237 (void) fflush(stderr); 238 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 239 va_end(ap); 240 } 241 242 void 243 msgtail(const char *fmt, ...) 244 { 245 va_list ap; 246 va_start(ap, fmt); 247 (void) vfprintf(stderr, fmt, ap); 248 va_end(ap); 249 } 250 251 void 252 quit(const char *fmt, ...) 253 { 254 va_list ap; 255 256 (void) fprintf(stderr," DUMP: "); 257 #ifdef TDEBUG 258 (void) fprintf(stderr, "pid=%d ", getpid()); 259 #endif 260 va_start(ap, fmt); 261 (void) vfprintf(stderr, fmt, ap); 262 va_end(ap); 263 (void) fflush(stdout); 264 (void) fflush(stderr); 265 dumpabort(0); 266 } 267 268 /* 269 * Tell the operator what has to be done; 270 * we don't actually do it 271 */ 272 273 struct fstab * 274 allocfsent(const struct fstab *fs) 275 { 276 struct fstab *new; 277 278 new = (struct fstab *)malloc(sizeof (*fs)); 279 if (new == NULL || 280 (new->fs_file = strdup(fs->fs_file)) == NULL || 281 (new->fs_type = strdup(fs->fs_type)) == NULL || 282 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 283 quit("%s\n", strerror(errno)); 284 new->fs_passno = fs->fs_passno; 285 new->fs_freq = fs->fs_freq; 286 return (new); 287 } 288 289 struct pfstab { 290 SLIST_ENTRY(pfstab) pf_list; 291 struct fstab *pf_fstab; 292 }; 293 294 static SLIST_HEAD(, pfstab) table; 295 296 void 297 getfstab(void) 298 { 299 struct fstab *fs; 300 struct pfstab *pf; 301 302 if (setfsent() == 0) { 303 msg("Can't open %s for dump table information: %s\n", 304 _PATH_FSTAB, strerror(errno)); 305 return; 306 } 307 while ((fs = getfsent()) != NULL) { 308 if (strcmp(fs->fs_type, FSTAB_RW) && 309 strcmp(fs->fs_type, FSTAB_RO) && 310 strcmp(fs->fs_type, FSTAB_RQ)) 311 continue; 312 fs = allocfsent(fs); 313 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 314 quit("%s\n", strerror(errno)); 315 pf->pf_fstab = fs; 316 SLIST_INSERT_HEAD(&table, pf, pf_list); 317 } 318 (void) endfsent(); 319 } 320 321 /* 322 * Search in the fstab for a file name. 323 * This file name can be either the special or the path file name. 324 * 325 * The file name can omit the leading '/'. 326 */ 327 struct fstab * 328 fstabsearch(const char *key) 329 { 330 struct pfstab *pf; 331 struct fstab *fs; 332 char *rn; 333 334 SLIST_FOREACH(pf, &table, pf_list) { 335 fs = pf->pf_fstab; 336 if (strcmp(fs->fs_file, key) == 0 || 337 strcmp(fs->fs_spec, key) == 0) 338 return (fs); 339 rn = rawname(fs->fs_spec); 340 if (rn != NULL && strcmp(rn, key) == 0) 341 return (fs); 342 if (key[0] != '/') { 343 if (*fs->fs_spec == '/' && 344 strcmp(fs->fs_spec + 1, key) == 0) 345 return (fs); 346 if (*fs->fs_file == '/' && 347 strcmp(fs->fs_file + 1, key) == 0) 348 return (fs); 349 } 350 } 351 return (NULL); 352 } 353 354 /* 355 * Tell the operator what to do 356 */ 357 void 358 lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */ 359 { 360 int i; 361 struct fstab *dt; 362 struct dumpdates *dtwalk; 363 char *lastname, *date; 364 int dumpme; 365 time_t tnow; 366 struct tm *tlast; 367 368 (void) time(&tnow); 369 getfstab(); /* /etc/fstab input */ 370 initdumptimes(); /* /etc/dumpdates input */ 371 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 372 373 if (arg == 'w') 374 (void) printf("Dump these filesystems:\n"); 375 else 376 (void) printf("Last dump(s) done (Dump '>' filesystems):\n"); 377 lastname = "??"; 378 ITITERATE(i, dtwalk) { 379 if (strncmp(lastname, dtwalk->dd_name, 380 sizeof(dtwalk->dd_name)) == 0) 381 continue; 382 date = (char *)ctime(&dtwalk->dd_ddate); 383 date[16] = '\0'; /* blast away seconds and year */ 384 lastname = dtwalk->dd_name; 385 dt = fstabsearch(dtwalk->dd_name); 386 dumpme = (dt != NULL && dt->fs_freq != 0); 387 if (dumpme) { 388 tlast = localtime(&dtwalk->dd_ddate); 389 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 390 - (tlast->tm_min * 60) - tlast->tm_sec 391 + (dt->fs_freq * 86400)); 392 }; 393 if (arg != 'w' || dumpme) 394 (void) printf( 395 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", 396 dumpme && (arg != 'w') ? '>' : ' ', 397 dtwalk->dd_name, 398 dt ? dt->fs_file : "", 399 dtwalk->dd_level, 400 date); 401 } 402 } 403 404 int 405 datesort(const void *a1, const void *a2) 406 { 407 struct dumpdates *d1 = *(struct dumpdates **)a1; 408 struct dumpdates *d2 = *(struct dumpdates **)a2; 409 int diff; 410 411 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 412 if (diff == 0) 413 return (d2->dd_ddate - d1->dd_ddate); 414 return (diff); 415 } 416