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. 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 * @(#)optr.c 8.2 (Berkeley) 1/6/94 30 * $FreeBSD: src/sbin/dump/optr.c,v 1.9.2.5 2002/02/23 22:32:51 iedowse Exp $ 31 */ 32 33 #include <sys/param.h> 34 #include <sys/queue.h> 35 #include <sys/wait.h> 36 #include <sys/time.h> 37 38 #include <errno.h> 39 #include <fstab.h> 40 #include <grp.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <stdarg.h> 45 #include <signal.h> 46 #include <unistd.h> 47 48 #include <vfs/ufs/dinode.h> 49 50 #include "dump.h" 51 #include "pathnames.h" 52 53 static void alarmcatch(int); 54 static int datesort(const void *, const void *); 55 56 /* 57 * Query the operator; This previously-fascist piece of code 58 * no longer requires an exact response. 59 * It is intended to protect dump aborting by inquisitive 60 * people banging on the console terminal to see what is 61 * happening which might cause dump to croak, destroying 62 * a large number of hours of work. 63 * 64 * Every 2 minutes we reprint the message, alerting others 65 * that dump needs attention. 66 */ 67 static int timeout; 68 static const char *attnmessage; /* attention message */ 69 70 int 71 query(const char *question) 72 { 73 char replybuffer[64]; 74 int back, errcount; 75 FILE *mytty; 76 77 if ((mytty = fopen(_PATH_TTY, "r")) == NULL) 78 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno)); 79 attnmessage = question; 80 timeout = 0; 81 alarmcatch(0); 82 back = -1; 83 errcount = 0; 84 do { 85 if (fgets(replybuffer, 63, mytty) == NULL) { 86 clearerr(mytty); 87 if (++errcount > 30) /* XXX ugly */ 88 quit("excessive operator query failures\n"); 89 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') { 90 back = 1; 91 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') { 92 back = 0; 93 } else { 94 fprintf(stderr, " DUMP: \"Yes\" or \"No\"?\n"); 95 fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ", 96 question); 97 } 98 } while (back < 0); 99 100 /* 101 * Turn off the alarm, and reset the signal to trap out.. 102 */ 103 alarm(0); 104 if (signal(SIGALRM, sig) == SIG_IGN) 105 signal(SIGALRM, SIG_IGN); 106 fclose(mytty); 107 return(back); 108 } 109 110 char lastmsg[BUFSIZ]; 111 112 /* 113 * Alert the console operator, and enable the alarm clock to 114 * sleep for 2 minutes in case nobody comes to satisfy dump 115 */ 116 static void 117 alarmcatch(int signo __unused) 118 { 119 if (notify == 0) { 120 if (timeout == 0) 121 fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ", 122 attnmessage); 123 else 124 msgtail("\a\a"); 125 } else { 126 if (timeout) { 127 msgtail("\n"); 128 broadcast(""); /* just print last msg */ 129 } 130 fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", attnmessage); 131 } 132 signal(SIGALRM, alarmcatch); 133 alarm(120); 134 timeout = 1; 135 } 136 137 /* 138 * Here if an inquisitive operator interrupts the dump program 139 */ 140 void 141 interrupt(int signo __unused) 142 { 143 msg("Interrupt received.\n"); 144 if (query("Do you want to abort dump?")) 145 dumpabort(0); 146 } 147 148 /* 149 * We now use wall(1) to do the actual broadcasting. 150 */ 151 void 152 broadcast(const char *message) 153 { 154 FILE *fp; 155 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 156 157 if (!notify) 158 return; 159 160 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 161 if ((fp = popen(buf, "w")) == NULL) 162 return; 163 164 fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 165 if (lastmsg[0]) 166 fputs(lastmsg, fp); 167 if (message[0]) 168 fputs(message, fp); 169 170 pclose(fp); 171 } 172 173 /* 174 * Print out an estimate of the amount of time left to do the dump 175 */ 176 177 time_t tschedule = 0; 178 179 void 180 timeest(void) 181 { 182 double percent; 183 time_t tnow; 184 int deltat, hours, mins; 185 186 time(&tnow); 187 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 188 (double)(tnow - tstart_writing) / blockswritten * tapesize; 189 percent = (blockswritten * 100.0) / tapesize; 190 hours = deltat / 3600; 191 mins = (deltat % 3600) / 60; 192 193 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d", 194 disk, passno, percent, hours, mins); 195 if (tnow >= tschedule) { 196 tschedule = tnow + 300; 197 if (blockswritten < 500) 198 return; 199 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours, 200 mins); 201 } 202 } 203 204 /* 205 * Schedule a printout of the estimate in the next call to timeest(). 206 */ 207 void 208 infosch(int signo __unused) 209 { 210 tschedule = 0; 211 } 212 213 void 214 msg(const char *fmt, ...) 215 { 216 va_list ap; 217 218 fprintf(stderr," DUMP: "); 219 #ifdef TDEBUG 220 fprintf(stderr, "pid=%d ", getpid()); 221 #endif 222 va_start(ap, fmt); 223 vfprintf(stderr, fmt, ap); 224 va_end(ap); 225 fflush(stdout); 226 fflush(stderr); 227 va_start(ap, fmt); 228 vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 229 va_end(ap); 230 } 231 232 void 233 msgtail(const char *fmt, ...) 234 { 235 va_list ap; 236 237 va_start(ap, fmt); 238 vfprintf(stderr, fmt, ap); 239 va_end(ap); 240 } 241 242 void 243 quit(const char *fmt, ...) 244 { 245 va_list ap; 246 247 fprintf(stderr," DUMP: "); 248 #ifdef TDEBUG 249 fprintf(stderr, "pid=%d ", getpid()); 250 #endif 251 va_start(ap, fmt); 252 vfprintf(stderr, fmt, ap); 253 va_end(ap); 254 fflush(stdout); 255 fflush(stderr); 256 dumpabort(0); 257 } 258 259 /* 260 * Tell the operator what has to be done; 261 * we don't actually do it 262 */ 263 264 static struct fstab * 265 allocfsent(struct fstab *fs) 266 { 267 struct fstab *new; 268 269 new = (struct fstab *)malloc(sizeof (*fs)); 270 if (new == NULL || 271 (new->fs_file = strdup(fs->fs_file)) == NULL || 272 (new->fs_type = strdup(fs->fs_type)) == NULL || 273 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 274 quit("%s\n", strerror(errno)); 275 new->fs_passno = fs->fs_passno; 276 new->fs_freq = fs->fs_freq; 277 return (new); 278 } 279 280 struct pfstab { 281 SLIST_ENTRY(pfstab) pf_list; 282 struct fstab *pf_fstab; 283 }; 284 285 static SLIST_HEAD(, pfstab) table; 286 287 void 288 dump_getfstab(void) 289 { 290 struct fstab *fs; 291 struct pfstab *pf; 292 293 if (setfsent() == 0) { 294 msg("Can't open %s for dump table information: %s\n", 295 _PATH_FSTAB, strerror(errno)); 296 return; 297 } 298 while ((fs = getfsent()) != NULL) { 299 if (strcmp(fs->fs_type, FSTAB_RW) && 300 strcmp(fs->fs_type, FSTAB_RO) && 301 strcmp(fs->fs_type, FSTAB_RQ)) 302 continue; 303 fs = allocfsent(fs); 304 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 305 quit("%s\n", strerror(errno)); 306 pf->pf_fstab = fs; 307 SLIST_INSERT_HEAD(&table, pf, pf_list); 308 } 309 endfsent(); 310 } 311 312 /* 313 * Search in the fstab for a file name. 314 * This file name can be either the special or the path file name. 315 * 316 * The file name can omit the leading '/'. 317 */ 318 struct fstab * 319 fstabsearch(const char *key) 320 { 321 struct pfstab *pf; 322 struct fstab *fs; 323 char *rn; 324 325 SLIST_FOREACH(pf, &table, pf_list) { 326 fs = pf->pf_fstab; 327 if (strcmp(fs->fs_file, key) == 0 || 328 strcmp(fs->fs_spec, key) == 0) 329 return (fs); 330 rn = rawname(fs->fs_spec); 331 if (rn != NULL && strcmp(rn, key) == 0) 332 return (fs); 333 if (key[0] != '/') { 334 if (*fs->fs_spec == '/' && 335 strcmp(fs->fs_spec + 1, key) == 0) 336 return (fs); 337 if (*fs->fs_file == '/' && 338 strcmp(fs->fs_file + 1, key) == 0) 339 return (fs); 340 } 341 } 342 return (NULL); 343 } 344 345 /* 346 * Tell the operator what to do 347 * 348 * char arg: w ==> just what to do; W ==> most recent dumps 349 */ 350 void 351 lastdump(int arg) 352 { 353 int i; 354 struct fstab *dt; 355 struct dumpdates *dtwalk; 356 const char *lastname; 357 char *date; 358 int dumpme; 359 time_t tnow; 360 struct tm *tlast; 361 362 time(&tnow); 363 dump_getfstab(); /* /etc/fstab input */ 364 initdumptimes(); /* /etc/dumpdates input */ 365 qsort(ddatev, nddates, sizeof(struct dumpdates *), datesort); 366 367 if (arg == 'w') 368 printf("Dump these file systems:\n"); 369 else 370 printf("Last dump(s) done (Dump '>' file systems):\n"); 371 lastname = "??"; 372 ITITERATE(i, dtwalk) { 373 if (strncmp(lastname, dtwalk->dd_name, 374 sizeof(dtwalk->dd_name)) == 0) 375 continue; 376 date = (char *)ctime(&dtwalk->dd_ddate); 377 date[16] = '\0'; /* blast away seconds and year */ 378 lastname = dtwalk->dd_name; 379 dt = fstabsearch(dtwalk->dd_name); 380 dumpme = (dt != NULL && dt->fs_freq != 0); 381 if (dumpme) { 382 tlast = localtime(&dtwalk->dd_ddate); 383 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 384 - (tlast->tm_min * 60) - tlast->tm_sec 385 + (dt->fs_freq * 86400)); 386 } 387 if (arg != 'w' || dumpme) 388 printf( 389 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", 390 dumpme && (arg != 'w') ? '>' : ' ', 391 dtwalk->dd_name, 392 dt ? dt->fs_file : "", 393 dtwalk->dd_level, 394 date); 395 } 396 } 397 398 static int 399 datesort(const void *a1, const void *a2) 400 { 401 const struct dumpdates *d1 = *(const struct dumpdates * const *)a1; 402 const struct dumpdates *d2 = *(const struct dumpdates * const *)a2; 403 int diff; 404 405 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 406 if (diff == 0) 407 return (d2->dd_ddate - d1->dd_ddate); 408 return (diff); 409 } 410