optr.c revision 113214
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 36static char sccsid[] = "@(#)optr.c 8.2 (Berkeley) 1/6/94"; 37#endif 38static const char rcsid[] = 39 "$FreeBSD: head/sbin/dump/optr.c 113214 2003-04-07 11:34:12Z mdodd $"; 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 <limits.h> 53#include <stdio.h> 54#include <stdlib.h> 55#include <string.h> 56#include <stdarg.h> 57#include <signal.h> 58#include <unistd.h> 59 60#include "dump.h" 61#include "pathnames.h" 62 63void alarmcatch(int); 64int datesort(const void *, const void *); 65 66/* 67 * Query the operator; This previously-fascist piece of code 68 * no longer requires an exact response. 69 * It is intended to protect dump aborting by inquisitive 70 * people banging on the console terminal to see what is 71 * happening which might cause dump to croak, destroying 72 * a large number of hours of work. 73 * 74 * Every 2 minutes we reprint the message, alerting others 75 * that dump needs attention. 76 */ 77static int timeout; 78static const char *attnmessage; /* attention message */ 79 80int 81query(const char *question) 82{ 83 char replybuffer[64]; 84 int back, errcount; 85 FILE *mytty; 86 87 if ((mytty = fopen(_PATH_TTY, "r")) == NULL) 88 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno)); 89 attnmessage = question; 90 timeout = 0; 91 alarmcatch(0); 92 back = -1; 93 errcount = 0; 94 do { 95 if (fgets(replybuffer, 63, mytty) == NULL) { 96 clearerr(mytty); 97 if (++errcount > 30) /* XXX ugly */ 98 quit("excessive operator query failures\n"); 99 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') { 100 back = 1; 101 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') { 102 back = 0; 103 } else { 104 (void) fprintf(stderr, 105 " DUMP: \"Yes\" or \"No\"?\n"); 106 (void) fprintf(stderr, 107 " DUMP: %s: (\"yes\" or \"no\") ", question); 108 } 109 } while (back < 0); 110 111 /* 112 * Turn off the alarm, and reset the signal to trap out.. 113 */ 114 (void) alarm(0); 115 if (signal(SIGALRM, sig) == SIG_IGN) 116 signal(SIGALRM, SIG_IGN); 117 (void) fclose(mytty); 118 return(back); 119} 120 121char lastmsg[BUFSIZ]; 122 123/* 124 * Alert the console operator, and enable the alarm clock to 125 * sleep for 2 minutes in case nobody comes to satisfy dump 126 */ 127void 128alarmcatch(int sig __unused) 129{ 130 if (notify == 0) { 131 if (timeout == 0) 132 (void) fprintf(stderr, 133 " DUMP: %s: (\"yes\" or \"no\") ", 134 attnmessage); 135 else 136 msgtail("\a\a"); 137 } else { 138 if (timeout) { 139 msgtail("\n"); 140 broadcast(""); /* just print last msg */ 141 } 142 (void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", 143 attnmessage); 144 } 145 signal(SIGALRM, alarmcatch); 146 (void) alarm(120); 147 timeout = 1; 148} 149 150/* 151 * Here if an inquisitive operator interrupts the dump program 152 */ 153void 154interrupt(int signo __unused) 155{ 156 msg("Interrupt received.\n"); 157 if (query("Do you want to abort dump?")) 158 dumpabort(0); 159} 160 161/* 162 * We now use wall(1) to do the actual broadcasting. 163 */ 164void 165broadcast(const char *message) 166{ 167 FILE *fp; 168 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; 169 170 if (!notify) 171 return; 172 173 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); 174 if ((fp = popen(buf, "w")) == NULL) 175 return; 176 177 (void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); 178 if (lastmsg[0]) 179 (void) fputs(lastmsg, fp); 180 if (message[0]) 181 (void) fputs(message, fp); 182 183 (void) pclose(fp); 184} 185 186/* 187 * Print out an estimate of the amount of time left to do the dump 188 */ 189 190time_t tschedule = 0; 191 192void 193timeest(void) 194{ 195 double percent; 196 time_t tnow; 197 int deltat, hours, mins; 198 199 (void) time(&tnow); 200 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow + 201 (double)(tnow - tstart_writing) / blockswritten * tapesize; 202 percent = (blockswritten * 100.0) / tapesize; 203 hours = deltat / 3600; 204 mins = (deltat % 3600) / 60; 205 206 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d", 207 disk, passno, percent, hours, mins); 208 if (tnow >= tschedule) { 209 tschedule = tnow + 300; 210 if (blockswritten < 500) 211 return; 212 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours, 213 mins); 214 } 215} 216 217/* 218 * Schedule a printout of the estimate in the next call to timeest(). 219 */ 220void 221infosch(int signal __unused) 222{ 223 tschedule = 0; 224} 225 226void 227msg(const char *fmt, ...) 228{ 229 va_list ap; 230 231 (void) fprintf(stderr," DUMP: "); 232#ifdef TDEBUG 233 (void) fprintf(stderr, "pid=%d ", getpid()); 234#endif 235 va_start(ap, fmt); 236 (void) vfprintf(stderr, fmt, ap); 237 (void) fflush(stdout); 238 (void) fflush(stderr); 239 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); 240 va_end(ap); 241} 242 243void 244msgtail(const char *fmt, ...) 245{ 246 va_list ap; 247 va_start(ap, fmt); 248 (void) vfprintf(stderr, fmt, ap); 249 va_end(ap); 250} 251 252void 253quit(const char *fmt, ...) 254{ 255 va_list ap; 256 257 (void) fprintf(stderr," DUMP: "); 258#ifdef TDEBUG 259 (void) fprintf(stderr, "pid=%d ", getpid()); 260#endif 261 va_start(ap, fmt); 262 (void) vfprintf(stderr, fmt, ap); 263 va_end(ap); 264 (void) fflush(stdout); 265 (void) fflush(stderr); 266 dumpabort(0); 267} 268 269/* 270 * Tell the operator what has to be done; 271 * we don't actually do it 272 */ 273 274struct fstab * 275allocfsent(const struct fstab *fs) 276{ 277 struct fstab *new; 278 279 new = (struct fstab *)malloc(sizeof (*fs)); 280 if (new == NULL || 281 (new->fs_file = strdup(fs->fs_file)) == NULL || 282 (new->fs_type = strdup(fs->fs_type)) == NULL || 283 (new->fs_spec = strdup(fs->fs_spec)) == NULL) 284 quit("%s\n", strerror(errno)); 285 new->fs_passno = fs->fs_passno; 286 new->fs_freq = fs->fs_freq; 287 return (new); 288} 289 290struct pfstab { 291 SLIST_ENTRY(pfstab) pf_list; 292 struct fstab *pf_fstab; 293}; 294 295static SLIST_HEAD(, pfstab) table; 296 297void 298dump_getfstab(void) 299{ 300 struct fstab *fs; 301 struct pfstab *pf; 302 303 if (setfsent() == 0) { 304 msg("Can't open %s for dump table information: %s\n", 305 _PATH_FSTAB, strerror(errno)); 306 return; 307 } 308 while ((fs = getfsent()) != NULL) { 309 if (strcmp(fs->fs_type, FSTAB_RW) && 310 strcmp(fs->fs_type, FSTAB_RO) && 311 strcmp(fs->fs_type, FSTAB_RQ)) 312 continue; 313 fs = allocfsent(fs); 314 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL) 315 quit("%s\n", strerror(errno)); 316 pf->pf_fstab = fs; 317 SLIST_INSERT_HEAD(&table, pf, pf_list); 318 } 319 (void) endfsent(); 320} 321 322/* 323 * Search in the fstab for a file name. 324 * This file name can be either the special or the path file name. 325 * 326 * The file name can omit the leading '/'. 327 */ 328struct fstab * 329fstabsearch(const char *key) 330{ 331 struct pfstab *pf; 332 struct fstab *fs; 333 char *rn; 334 335 SLIST_FOREACH(pf, &table, pf_list) { 336 fs = pf->pf_fstab; 337 if (strcmp(fs->fs_file, key) == 0 || 338 strcmp(fs->fs_spec, key) == 0) 339 return (fs); 340 rn = rawname(fs->fs_spec); 341 if (rn != NULL && strcmp(rn, key) == 0) 342 return (fs); 343 if (key[0] != '/') { 344 if (*fs->fs_spec == '/' && 345 strcmp(fs->fs_spec + 1, key) == 0) 346 return (fs); 347 if (*fs->fs_file == '/' && 348 strcmp(fs->fs_file + 1, key) == 0) 349 return (fs); 350 } 351 } 352 return (NULL); 353} 354 355/* 356 * Tell the operator what to do 357 */ 358void 359lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */ 360{ 361 int i; 362 struct fstab *dt; 363 struct dumpdates *dtwalk; 364 char *lastname, *date; 365 int dumpme; 366 time_t tnow; 367 struct tm *tlast; 368 369 (void) time(&tnow); 370 dump_getfstab(); /* /etc/fstab input */ 371 initdumptimes(); /* /etc/dumpdates input */ 372 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); 373 374 if (arg == 'w') 375 (void) printf("Dump these file systems:\n"); 376 else 377 (void) printf("Last dump(s) done (Dump '>' file systems):\n"); 378 lastname = "??"; 379 ITITERATE(i, dtwalk) { 380 if (strncmp(lastname, dtwalk->dd_name, 381 sizeof(dtwalk->dd_name)) == 0) 382 continue; 383 date = (char *)ctime(&dtwalk->dd_ddate); 384 date[16] = '\0'; /* blast away seconds and year */ 385 lastname = dtwalk->dd_name; 386 dt = fstabsearch(dtwalk->dd_name); 387 dumpme = (dt != NULL && dt->fs_freq != 0); 388 if (dumpme) { 389 tlast = localtime(&dtwalk->dd_ddate); 390 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600) 391 - (tlast->tm_min * 60) - tlast->tm_sec 392 + (dt->fs_freq * 86400)); 393 }; 394 if (arg != 'w' || dumpme) 395 (void) printf( 396 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", 397 dumpme && (arg != 'w') ? '>' : ' ', 398 dtwalk->dd_name, 399 dt ? dt->fs_file : "", 400 dtwalk->dd_level, 401 date); 402 } 403} 404 405int 406datesort(const void *a1, const void *a2) 407{ 408 struct dumpdates *d1 = *(struct dumpdates **)a1; 409 struct dumpdates *d2 = *(struct dumpdates **)a2; 410 int diff; 411 412 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); 413 if (diff == 0) 414 return (d2->dd_ddate - d1->dd_ddate); 415 return (diff); 416} 417