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 1.10 2005/08/28 04:35:12 dillon 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 <vfs/ufs/dinode.h> 55 56 #include "dump.h" 57 #include "pathnames.h" 58 59 static void alarmcatch(int); 60 static 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 fprintf(stderr, " DUMP: \"Yes\" or \"No\"?\n"); 101 fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ", 102 question); 103 } 104 } while (back < 0); 105 106 /* 107 * Turn off the alarm, and reset the signal to trap out.. 108 */ 109 alarm(0); 110 if (signal(SIGALRM, sig) == SIG_IGN) 111 signal(SIGALRM, SIG_IGN); 112 fclose(mytty); 113 return(back); 114 } 115 116 char lastmsg[BUFSIZ]; 117 118 /* 119 * Alert the console operator, and enable the alarm clock to 120 * sleep for 2 minutes in case nobody comes to satisfy dump 121 */ 122 static void 123 alarmcatch(int signo __unused) 124 { 125 if (notify == 0) { 126 if (timeout == 0) 127 fprintf(stderr, " 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 fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", attnmessage); 137 } 138 signal(SIGALRM, alarmcatch); 139 alarm(120); 140 timeout = 1; 141 } 142 143 /* 144 * Here if an inquisitive operator interrupts the dump program 145 */ 146 void 147 interrupt(int signo __unused) 148 { 149 msg("Interrupt received.\n"); 150 if (query("Do you want to abort dump?")) 151 dumpabort(0); 152 } 153 154 /* 155 * We now use wall(1) to do the actual broadcasting. 156 */ 157 void 158 broadcast(const char *message) 159 { 160 FILE *fp; 161 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 162 163 if (!notify) 164 return; 165 166 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 167 if ((fp = popen(buf, "w")) == NULL) 168 return; 169 170 fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 171 if (lastmsg[0]) 172 fputs(lastmsg, fp); 173 if (message[0]) 174 fputs(message, fp); 175 176 pclose(fp); 177 } 178 179 /* 180 * Print out an estimate of the amount of time left to do the dump 181 */ 182 183 time_t tschedule = 0; 184 185 void 186 timeest(void) 187 { 188 double percent; 189 time_t tnow; 190 int deltat, hours, mins; 191 192 time(&tnow); 193 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 194 (double)(tnow - tstart_writing) / blockswritten * tapesize; 195 percent = (blockswritten * 100.0) / tapesize; 196 hours = deltat / 3600; 197 mins = (deltat % 3600) / 60; 198 199 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d", 200 disk, passno, percent, hours, mins); 201 if (tnow >= tschedule) { 202 tschedule = tnow + 300; 203 if (blockswritten < 500) 204 return; 205 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours, 206 mins); 207 } 208 } 209 210 /* 211 * Schedule a printout of the estimate in the next call to timeest(). 212 */ 213 void 214 infosch(int signo __unused) 215 { 216 tschedule = 0; 217 } 218 219 void 220 msg(const char *fmt, ...) 221 { 222 va_list ap; 223 224 fprintf(stderr," DUMP: "); 225 #ifdef TDEBUG 226 fprintf(stderr, "pid=%d ", getpid()); 227 #endif 228 va_start(ap, fmt); 229 vfprintf(stderr, fmt, ap); 230 va_end(ap); 231 fflush(stdout); 232 fflush(stderr); 233 va_start(ap, fmt); 234 vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 235 va_end(ap); 236 } 237 238 void 239 msgtail(const char *fmt, ...) 240 { 241 va_list ap; 242 243 va_start(ap, fmt); 244 vfprintf(stderr, fmt, ap); 245 va_end(ap); 246 } 247 248 void 249 quit(const char *fmt, ...) 250 { 251 va_list ap; 252 253 fprintf(stderr," DUMP: "); 254 #ifdef TDEBUG 255 fprintf(stderr, "pid=%d ", getpid()); 256 #endif 257 va_start(ap, fmt); 258 vfprintf(stderr, fmt, ap); 259 va_end(ap); 260 fflush(stdout); 261 fflush(stderr); 262 dumpabort(0); 263 } 264 265 /* 266 * Tell the operator what has to be done; 267 * we don't actually do it 268 */ 269 270 static struct fstab * 271 allocfsent(struct fstab *fs) 272 { 273 struct fstab *new; 274 275 new = (struct fstab *)malloc(sizeof (*fs)); 276 if (new == NULL || 277 (new->fs_file = strdup(fs->fs_file)) == NULL || 278 (new->fs_type = strdup(fs->fs_type)) == NULL || 279 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 280 quit("%s\n", strerror(errno)); 281 new->fs_passno = fs->fs_passno; 282 new->fs_freq = fs->fs_freq; 283 return (new); 284 } 285 286 struct pfstab { 287 SLIST_ENTRY(pfstab) pf_list; 288 struct fstab *pf_fstab; 289 }; 290 291 static SLIST_HEAD(, pfstab) table; 292 293 void 294 dump_getfstab(void) 295 { 296 struct fstab *fs; 297 struct pfstab *pf; 298 299 if (setfsent() == 0) { 300 msg("Can't open %s for dump table information: %s\n", 301 _PATH_FSTAB, strerror(errno)); 302 return; 303 } 304 while ((fs = getfsent()) != NULL) { 305 if (strcmp(fs->fs_type, FSTAB_RW) && 306 strcmp(fs->fs_type, FSTAB_RO) && 307 strcmp(fs->fs_type, FSTAB_RQ)) 308 continue; 309 fs = allocfsent(fs); 310 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 311 quit("%s\n", strerror(errno)); 312 pf->pf_fstab = fs; 313 SLIST_INSERT_HEAD(&table, pf, pf_list); 314 } 315 endfsent(); 316 } 317 318 /* 319 * Search in the fstab for a file name. 320 * This file name can be either the special or the path file name. 321 * 322 * The file name can omit the leading '/'. 323 */ 324 struct fstab * 325 fstabsearch(const char *key) 326 { 327 struct pfstab *pf; 328 struct fstab *fs; 329 char *rn; 330 331 SLIST_FOREACH(pf, &table, pf_list) { 332 fs = pf->pf_fstab; 333 if (strcmp(fs->fs_file, key) == 0 || 334 strcmp(fs->fs_spec, key) == 0) 335 return (fs); 336 rn = rawname(fs->fs_spec); 337 if (rn != NULL && strcmp(rn, key) == 0) 338 return (fs); 339 if (key[0] != '/') { 340 if (*fs->fs_spec == '/' && 341 strcmp(fs->fs_spec + 1, key) == 0) 342 return (fs); 343 if (*fs->fs_file == '/' && 344 strcmp(fs->fs_file + 1, key) == 0) 345 return (fs); 346 } 347 } 348 return (NULL); 349 } 350 351 /* 352 * Tell the operator what to do 353 * 354 * char arg: w ==> just what to do; W ==> most recent dumps 355 */ 356 void 357 lastdump(int arg) 358 { 359 int i; 360 struct fstab *dt; 361 struct dumpdates *dtwalk; 362 const char *lastname; 363 char *date; 364 int dumpme; 365 time_t tnow; 366 struct tm *tlast; 367 368 time(&tnow); 369 dump_getfstab(); /* /etc/fstab input */ 370 initdumptimes(); /* /etc/dumpdates input */ 371 qsort(ddatev, nddates, sizeof(struct dumpdates *), datesort); 372 373 if (arg == 'w') 374 printf("Dump these file systems:\n"); 375 else 376 printf("Last dump(s) done (Dump '>' file systems):\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 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 static int 405 datesort(const void *a1, const void *a2) 406 { 407 const struct dumpdates *d1 = *(const struct dumpdates * const *)a1; 408 const struct dumpdates *d2 = *(const struct dumpdates * const *)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