|
|
1.1 ! root 1: /* ! 2: * Copyright (c) 1980 Regents of the University of California. ! 3: * All rights reserved. The Berkeley software License Agreement ! 4: * specifies the terms and conditions for redistribution. ! 5: */ ! 6: ! 7: #ifndef lint ! 8: static char sccsid[] = "@(#)dumpoptr.c 5.1 (Berkeley) 6/5/85"; ! 9: #endif not lint ! 10: ! 11: #include "dump.h" ! 12: ! 13: /* ! 14: * This is from /usr/include/grp.h ! 15: * That defined struct group, which conflicts ! 16: * with the struct group defined in param.h ! 17: */ ! 18: struct Group { /* see getgrent(3) */ ! 19: char *gr_name; ! 20: char *gr_passwd; ! 21: int gr_gid; ! 22: char **gr_mem; ! 23: }; ! 24: struct Group *getgrnam(); ! 25: /* ! 26: * Query the operator; This fascist piece of code requires ! 27: * an exact response. ! 28: * It is intended to protect dump aborting by inquisitive ! 29: * people banging on the console terminal to see what is ! 30: * happening which might cause dump to croak, destroying ! 31: * a large number of hours of work. ! 32: * ! 33: * Every 2 minutes we reprint the message, alerting others ! 34: * that dump needs attention. ! 35: */ ! 36: int timeout; ! 37: char *attnmessage; /* attention message */ ! 38: query(question) ! 39: char *question; ! 40: { ! 41: char replybuffer[64]; ! 42: int back; ! 43: FILE *mytty; ! 44: ! 45: if ( (mytty = fopen("/dev/tty", "r")) == NULL){ ! 46: msg("fopen on /dev/tty fails\n"); ! 47: abort(); ! 48: } ! 49: attnmessage = question; ! 50: timeout = 0; ! 51: alarmcatch(); ! 52: for(;;){ ! 53: if ( fgets(replybuffer, 63, mytty) == NULL){ ! 54: if (ferror(mytty)){ ! 55: clearerr(mytty); ! 56: continue; ! 57: } ! 58: } else if ( (strcmp(replybuffer, "yes\n") == 0) || ! 59: (strcmp(replybuffer, "Yes\n") == 0)){ ! 60: back = 1; ! 61: goto done; ! 62: } else if ( (strcmp(replybuffer, "no\n") == 0) || ! 63: (strcmp(replybuffer, "No\n") == 0)){ ! 64: back = 0; ! 65: goto done; ! 66: } else { ! 67: msg("\"Yes\" or \"No\"?\n"); ! 68: alarmcatch(); ! 69: } ! 70: } ! 71: done: ! 72: /* ! 73: * Turn off the alarm, and reset the signal to trap out.. ! 74: */ ! 75: alarm(0); ! 76: if (signal(SIGALRM, sigalrm) == SIG_IGN) ! 77: signal(SIGALRM, SIG_IGN); ! 78: fclose(mytty); ! 79: return(back); ! 80: } ! 81: /* ! 82: * Alert the console operator, and enable the alarm clock to ! 83: * sleep for 2 minutes in case nobody comes to satisfy dump ! 84: */ ! 85: alarmcatch() ! 86: { ! 87: if (timeout) ! 88: msgtail("\n"); ! 89: msg("NEEDS ATTENTION: %s: (\"yes\" or \"no\") ", ! 90: attnmessage); ! 91: signal(SIGALRM, alarmcatch); ! 92: alarm(120); ! 93: timeout = 1; ! 94: } ! 95: /* ! 96: * Here if an inquisitive operator interrupts the dump program ! 97: */ ! 98: interrupt() ! 99: { ! 100: msg("Interrupt received.\n"); ! 101: if (query("Do you want to abort dump?")) ! 102: dumpabort(); ! 103: signal(SIGINT, interrupt); ! 104: } ! 105: ! 106: /* ! 107: * The following variables and routines manage alerting ! 108: * operators to the status of dump. ! 109: * This works much like wall(1) does. ! 110: */ ! 111: struct Group *gp; ! 112: ! 113: /* ! 114: * Get the names from the group entry "operator" to notify. ! 115: */ ! 116: set_operators() ! 117: { ! 118: if (!notify) /*not going to notify*/ ! 119: return; ! 120: gp = getgrnam(OPGRENT); ! 121: endgrent(); ! 122: if (gp == (struct Group *)0){ ! 123: msg("No entry in /etc/group for %s.\n", ! 124: OPGRENT); ! 125: notify = 0; ! 126: return; ! 127: } ! 128: } ! 129: ! 130: struct tm *localtime(); ! 131: struct tm *localclock; ! 132: ! 133: /* ! 134: * We fork a child to do the actual broadcasting, so ! 135: * that the process control groups are not messed up ! 136: */ ! 137: broadcast(message) ! 138: char *message; ! 139: { ! 140: time_t clock; ! 141: FILE *f_utmp; ! 142: struct utmp utmp; ! 143: int nusers; ! 144: char **np; ! 145: int pid, s; ! 146: ! 147: switch (pid = fork()) { ! 148: case -1: ! 149: return; ! 150: case 0: ! 151: break; ! 152: default: ! 153: while (wait(&s) != pid) ! 154: continue; ! 155: return; ! 156: } ! 157: ! 158: if (!notify || gp == 0) ! 159: exit(0); ! 160: clock = time(0); ! 161: localclock = localtime(&clock); ! 162: ! 163: if((f_utmp = fopen("/etc/utmp", "r")) == NULL) { ! 164: msg("Cannot open /etc/utmp\n"); ! 165: return; ! 166: } ! 167: ! 168: nusers = 0; ! 169: while (!feof(f_utmp)){ ! 170: if (fread(&utmp, sizeof (struct utmp), 1, f_utmp) != 1) ! 171: break; ! 172: if (utmp.ut_name[0] == 0) ! 173: continue; ! 174: nusers++; ! 175: for (np = gp->gr_mem; *np; np++){ ! 176: if (strncmp(*np, utmp.ut_name, sizeof(utmp.ut_name)) != 0) ! 177: continue; ! 178: /* ! 179: * Do not send messages to operators on dialups ! 180: */ ! 181: if (strncmp(utmp.ut_line, DIALUP, strlen(DIALUP)) == 0) ! 182: continue; ! 183: #ifdef DEBUG ! 184: msg("Message to %s at %s\n", ! 185: utmp.ut_name, utmp.ut_line); ! 186: #endif DEBUG ! 187: sendmes(utmp.ut_line, message); ! 188: } ! 189: } ! 190: fclose(f_utmp); ! 191: Exit(0); /* the wait in this same routine will catch this */ ! 192: /* NOTREACHED */ ! 193: } ! 194: ! 195: sendmes(tty, message) ! 196: char *tty, *message; ! 197: { ! 198: char t[50], buf[BUFSIZ]; ! 199: register char *cp; ! 200: register int c, ch; ! 201: int msize; ! 202: FILE *f_tty; ! 203: ! 204: msize = strlen(message); ! 205: strcpy(t, "/dev/"); ! 206: strcat(t, tty); ! 207: ! 208: if((f_tty = fopen(t, "w")) != NULL) { ! 209: setbuf(f_tty, buf); ! 210: fprintf(f_tty, "\nMessage from the dump program to all operators at %d:%02d ...\r\n\n" ! 211: ,localclock->tm_hour ! 212: ,localclock->tm_min); ! 213: for (cp = message, c = msize; c-- > 0; cp++) { ! 214: ch = *cp; ! 215: if (ch == '\n') ! 216: putc('\r', f_tty); ! 217: putc(ch, f_tty); ! 218: } ! 219: fclose(f_tty); ! 220: } ! 221: } ! 222: ! 223: /* ! 224: * print out an estimate of the amount of time left to do the dump ! 225: */ ! 226: ! 227: time_t tschedule = 0; ! 228: ! 229: timeest() ! 230: { ! 231: time_t tnow, deltat; ! 232: ! 233: time (&tnow); ! 234: if (tnow >= tschedule){ ! 235: tschedule = tnow + 300; ! 236: if (blockswritten < 500) ! 237: return; ! 238: deltat = tstart_writing - tnow + ! 239: (((1.0*(tnow - tstart_writing))/blockswritten) * esize); ! 240: msg("%3.2f%% done, finished in %d:%02d\n", ! 241: (blockswritten*100.0)/esize, ! 242: deltat/3600, (deltat%3600)/60); ! 243: } ! 244: } ! 245: ! 246: int blocksontape() ! 247: { ! 248: /* ! 249: * esize: total number of blocks estimated over all reels ! 250: * blockswritten: blocks actually written, over all reels ! 251: * etapes: estimated number of tapes to write ! 252: * ! 253: * tsize: blocks can write on this reel ! 254: * asize: blocks written on this reel ! 255: * tapeno: number of tapes written so far ! 256: */ ! 257: if (tapeno == etapes) ! 258: return(esize - (etapes - 1)*tsize); ! 259: return(tsize); ! 260: } ! 261: ! 262: /* VARARGS1 */ ! 263: /* ARGSUSED */ ! 264: msg(fmt, a1, a2, a3, a4, a5) ! 265: char *fmt; ! 266: int a1, a2, a3, a4, a5; ! 267: { ! 268: fprintf(stderr," DUMP: "); ! 269: #ifdef TDEBUG ! 270: fprintf(stderr,"pid=%d ", getpid()); ! 271: #endif ! 272: fprintf(stderr, fmt, a1, a2, a3, a4, a5); ! 273: fflush(stdout); ! 274: fflush(stderr); ! 275: } ! 276: ! 277: /* VARARGS1 */ ! 278: /* ARGSUSED */ ! 279: msgtail(fmt, a1, a2, a3, a4, a5) ! 280: char *fmt; ! 281: int a1, a2, a3, a4, a5; ! 282: { ! 283: fprintf(stderr, fmt, a1, a2, a3, a4, a5); ! 284: } ! 285: /* ! 286: * Tell the operator what has to be done; ! 287: * we don't actually do it ! 288: */ ! 289: ! 290: struct fstab * ! 291: allocfsent(fs) ! 292: register struct fstab *fs; ! 293: { ! 294: register struct fstab *new; ! 295: register char *cp; ! 296: char *malloc(); ! 297: ! 298: new = (struct fstab *)malloc(sizeof (*fs)); ! 299: cp = malloc(strlen(fs->fs_file) + 1); ! 300: strcpy(cp, fs->fs_file); ! 301: new->fs_file = cp; ! 302: cp = malloc(strlen(fs->fs_type) + 1); ! 303: strcpy(cp, fs->fs_type); ! 304: new->fs_type = cp; ! 305: cp = malloc(strlen(fs->fs_spec) + 1); ! 306: strcpy(cp, fs->fs_spec); ! 307: new->fs_spec = cp; ! 308: new->fs_passno = fs->fs_passno; ! 309: new->fs_freq = fs->fs_freq; ! 310: return (new); ! 311: } ! 312: ! 313: struct pfstab { ! 314: struct pfstab *pf_next; ! 315: struct fstab *pf_fstab; ! 316: }; ! 317: ! 318: static struct pfstab *table = NULL; ! 319: ! 320: getfstab() ! 321: { ! 322: register struct fstab *fs; ! 323: register struct pfstab *pf; ! 324: ! 325: if (setfsent() == 0) { ! 326: msg("Can't open %s for dump table information.\n", FSTAB); ! 327: return; ! 328: } ! 329: while (fs = getfsent()) { ! 330: if (strcmp(fs->fs_type, FSTAB_RW) && ! 331: strcmp(fs->fs_type, FSTAB_RO) && ! 332: strcmp(fs->fs_type, FSTAB_RQ)) ! 333: continue; ! 334: fs = allocfsent(fs); ! 335: pf = (struct pfstab *)malloc(sizeof (*pf)); ! 336: pf->pf_fstab = fs; ! 337: pf->pf_next = table; ! 338: table = pf; ! 339: } ! 340: endfsent(); ! 341: } ! 342: ! 343: /* ! 344: * Search in the fstab for a file name. ! 345: * This file name can be either the special or the path file name. ! 346: * ! 347: * The entries in the fstab are the BLOCK special names, not the ! 348: * character special names. ! 349: * The caller of fstabsearch assures that the character device ! 350: * is dumped (that is much faster) ! 351: * ! 352: * The file name can omit the leading '/'. ! 353: */ ! 354: struct fstab * ! 355: fstabsearch(key) ! 356: char *key; ! 357: { ! 358: register struct pfstab *pf; ! 359: register struct fstab *fs; ! 360: char *rawname(); ! 361: ! 362: if (table == NULL) ! 363: return ((struct fstab *)0); ! 364: for (pf = table; pf; pf = pf->pf_next) { ! 365: fs = pf->pf_fstab; ! 366: if (strcmp(fs->fs_file, key) == 0) ! 367: return (fs); ! 368: if (strcmp(fs->fs_spec, key) == 0) ! 369: return (fs); ! 370: if (strcmp(rawname(fs->fs_spec), key) == 0) ! 371: return (fs); ! 372: if (key[0] != '/'){ ! 373: if (*fs->fs_spec == '/' && ! 374: strcmp(fs->fs_spec + 1, key) == 0) ! 375: return (fs); ! 376: if (*fs->fs_file == '/' && ! 377: strcmp(fs->fs_file + 1, key) == 0) ! 378: return (fs); ! 379: } ! 380: } ! 381: return (0); ! 382: } ! 383: ! 384: /* ! 385: * Tell the operator what to do ! 386: */ ! 387: lastdump(arg) ! 388: char arg; /* w ==> just what to do; W ==> most recent dumps */ ! 389: { ! 390: char *lastname; ! 391: char *date; ! 392: register int i; ! 393: time_t tnow; ! 394: register struct fstab *dt; ! 395: int dumpme; ! 396: register struct idates *itwalk; ! 397: ! 398: int idatesort(); ! 399: ! 400: time(&tnow); ! 401: getfstab(); /* /etc/fstab input */ ! 402: inititimes(); /* /etc/dumpdates input */ ! 403: qsort(idatev, nidates, sizeof(struct idates *), idatesort); ! 404: ! 405: if (arg == 'w') ! 406: fprintf(stdout, "Dump these file systems:\n"); ! 407: else ! 408: fprintf(stdout, "Last dump(s) done (Dump '>' file systems):\n"); ! 409: lastname = "??"; ! 410: ITITERATE(i, itwalk){ ! 411: if (strncmp(lastname, itwalk->id_name, sizeof(itwalk->id_name)) == 0) ! 412: continue; ! 413: date = (char *)ctime(&itwalk->id_ddate); ! 414: date[16] = '\0'; /* blast away seconds and year */ ! 415: lastname = itwalk->id_name; ! 416: dt = fstabsearch(itwalk->id_name); ! 417: dumpme = ( (dt != 0) ! 418: && (dt->fs_freq != 0) ! 419: && (itwalk->id_ddate < tnow - (dt->fs_freq*DAY))); ! 420: if ( (arg != 'w') || dumpme) ! 421: fprintf(stdout,"%c %8s\t(%6s) Last dump: Level %c, Date %s\n", ! 422: dumpme && (arg != 'w') ? '>' : ' ', ! 423: itwalk->id_name, ! 424: dt ? dt->fs_file : "", ! 425: itwalk->id_incno, ! 426: date ! 427: ); ! 428: } ! 429: } ! 430: ! 431: int idatesort(p1, p2) ! 432: struct idates **p1, **p2; ! 433: { ! 434: int diff; ! 435: ! 436: diff = strncmp((*p1)->id_name, (*p2)->id_name, sizeof((*p1)->id_name)); ! 437: if (diff == 0) ! 438: return ((*p2)->id_ddate - (*p1)->id_ddate); ! 439: else ! 440: return (diff); ! 441: } ! 442: ! 443: int max(a,b) ! 444: int a, b; ! 445: { ! 446: return(a>b?a:b); ! 447: } ! 448: int min(a,b) ! 449: int a, b; ! 450: { ! 451: return(a<b?a:b); ! 452: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.