1 /*- 2 * Copyright (c) 1980, 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 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)from: main.c 8.1 (Berkeley) 6/20/93"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/ioctl.h> 50 #include <sys/time.h> 51 #include <sys/resource.h> 52 #include <sys/stat.h> 53 #include <sys/ttydefaults.h> 54 #include <sys/utsname.h> 55 56 #include <ctype.h> 57 #include <errno.h> 58 #include <fcntl.h> 59 #include <locale.h> 60 #include <libutil.h> 61 #include <setjmp.h> 62 #include <signal.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <syslog.h> 66 #include <termios.h> 67 #include <time.h> 68 #include <unistd.h> 69 70 #include "gettytab.h" 71 #include "extern.h" 72 #include "pathnames.h" 73 74 /* 75 * Set the amount of running time that getty should accumulate 76 * before deciding that something is wrong and exit. 77 */ 78 #define GETTY_TIMEOUT 60 /* seconds */ 79 80 #undef CTRL 81 #define CTRL(x) (x&037) 82 83 /* defines for auto detection of incoming PPP calls (->PAP/CHAP) */ 84 85 #define PPP_FRAME 0x7e /* PPP Framing character */ 86 #define PPP_STATION 0xff /* "All Station" character */ 87 #define PPP_ESCAPE 0x7d /* Escape Character */ 88 #define PPP_CONTROL 0x03 /* PPP Control Field */ 89 #define PPP_CONTROL_ESCAPED 0x23 /* PPP Control Field, escaped */ 90 #define PPP_LCP_HI 0xc0 /* LCP protocol - high byte */ 91 #define PPP_LCP_LOW 0x21 /* LCP protocol - low byte */ 92 93 /* original mode; flags've been reset using values from <sys/ttydefaults.h> */ 94 struct termios omode; 95 /* current mode */ 96 struct termios tmode; 97 98 int crmod, digit, lower, upper; 99 100 char hostname[MAXHOSTNAMELEN]; 101 char name[MAXLOGNAME*3]; 102 char dev[] = _PATH_DEV; 103 char ttyn[32]; 104 105 #define OBUFSIZ 128 106 #define TABBUFSIZ 512 107 108 char defent[TABBUFSIZ]; 109 char tabent[TABBUFSIZ]; 110 const char *tname; 111 112 char *env[128]; 113 114 char partab[] = { 115 0001,0201,0201,0001,0201,0001,0001,0201, 116 0202,0004,0003,0205,0005,0206,0201,0001, 117 0201,0001,0001,0201,0001,0201,0201,0001, 118 0001,0201,0201,0001,0201,0001,0001,0201, 119 0200,0000,0000,0200,0000,0200,0200,0000, 120 0000,0200,0200,0000,0200,0000,0000,0200, 121 0000,0200,0200,0000,0200,0000,0000,0200, 122 0200,0000,0000,0200,0000,0200,0200,0000, 123 0200,0000,0000,0200,0000,0200,0200,0000, 124 0000,0200,0200,0000,0200,0000,0000,0200, 125 0000,0200,0200,0000,0200,0000,0000,0200, 126 0200,0000,0000,0200,0000,0200,0200,0000, 127 0000,0200,0200,0000,0200,0000,0000,0200, 128 0200,0000,0000,0200,0000,0200,0200,0000, 129 0200,0000,0000,0200,0000,0200,0200,0000, 130 0000,0200,0200,0000,0200,0000,0000,0201 131 }; 132 133 #define ERASE tmode.c_cc[VERASE] 134 #define KILL tmode.c_cc[VKILL] 135 #define EOT tmode.c_cc[VEOF] 136 137 #define puts Gputs 138 139 static void defttymode(void); 140 static void dingdong(int); 141 static void dogettytab(void); 142 static int getname(void); 143 static void interrupt(int); 144 static void oflush(void); 145 static void prompt(void); 146 static void putchr(int); 147 static void putf(const char *); 148 static void putpad(const char *); 149 static void puts(const char *); 150 static void timeoverrun(int); 151 static char *getline(int); 152 static void setttymode(int); 153 static int opentty(const char *, int); 154 155 jmp_buf timeout; 156 157 static void 158 dingdong(int signo __unused) 159 { 160 alarm(0); 161 longjmp(timeout, 1); 162 } 163 164 jmp_buf intrupt; 165 166 static void 167 interrupt(int signo __unused) 168 { 169 longjmp(intrupt, 1); 170 } 171 172 /* 173 * Action to take when getty is running too long. 174 */ 175 static void 176 timeoverrun(int signo __unused) 177 { 178 179 syslog(LOG_ERR, "getty exiting due to excessive running time"); 180 exit(1); 181 } 182 183 int 184 main(int argc, char *argv[]) 185 { 186 extern char **environ; 187 int first_sleep = 1, first_time = 1; 188 struct rlimit limit; 189 int rval; 190 191 signal(SIGINT, SIG_IGN); 192 signal(SIGQUIT, SIG_IGN); 193 194 openlog("getty", LOG_ODELAY|LOG_CONS|LOG_PID, LOG_AUTH); 195 gethostname(hostname, sizeof(hostname) - 1); 196 hostname[sizeof(hostname) - 1] = '\0'; 197 if (hostname[0] == '\0') 198 strcpy(hostname, "Amnesiac"); 199 200 /* 201 * Limit running time to deal with broken or dead lines. 202 */ 203 (void)signal(SIGXCPU, timeoverrun); 204 limit.rlim_max = RLIM_INFINITY; 205 limit.rlim_cur = GETTY_TIMEOUT; 206 (void)setrlimit(RLIMIT_CPU, &limit); 207 208 gettable("default", defent); 209 gendefaults(); 210 tname = "default"; 211 if (argc > 1) 212 tname = argv[1]; 213 214 /* 215 * The following is a work around for vhangup interactions 216 * which cause great problems getting window systems started. 217 * If the tty line is "-", we do the old style getty presuming 218 * that the file descriptors are already set up for us. 219 * J. Gettys - MIT Project Athena. 220 */ 221 if (argc <= 2 || strcmp(argv[2], "-") == 0) 222 strcpy(ttyn, ttyname(STDIN_FILENO)); 223 else { 224 strcpy(ttyn, dev); 225 strncat(ttyn, argv[2], sizeof(ttyn)-sizeof(dev)); 226 if (strcmp(argv[0], "+") != 0) { 227 chown(ttyn, 0, 0); 228 chmod(ttyn, 0600); 229 revoke(ttyn); 230 231 /* 232 * Do the first scan through gettytab. 233 * Terminal mode parameters will be wrong until 234 * defttymode() called, but they're irrelevant for 235 * the initial setup of the terminal device. 236 */ 237 dogettytab(); 238 239 /* 240 * Init or answer modem sequence has been specified. 241 */ 242 if (IC || AC) { 243 if (!opentty(ttyn, O_RDWR|O_NONBLOCK)) 244 exit(1); 245 defttymode(); 246 setttymode(1); 247 } 248 249 if (IC) { 250 if (getty_chat(IC, CT, DC) > 0) { 251 syslog(LOG_ERR, "modem init problem on %s", ttyn); 252 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode); 253 exit(1); 254 } 255 } 256 257 if (AC) { 258 int i, rfds; 259 struct timeval to; 260 261 rfds = 1 << 0; /* FD_SET */ 262 to.tv_sec = RT; 263 to.tv_usec = 0; 264 i = select(32, (fd_set*)&rfds, (fd_set*)NULL, 265 (fd_set*)NULL, RT ? &to : NULL); 266 if (i < 0) { 267 syslog(LOG_ERR, "select %s: %m", ttyn); 268 } else if (i == 0) { 269 syslog(LOG_NOTICE, "recycle tty %s", ttyn); 270 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode); 271 exit(0); /* recycle for init */ 272 } 273 i = getty_chat(AC, CT, DC); 274 if (i > 0) { 275 syslog(LOG_ERR, "modem answer problem on %s", ttyn); 276 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode); 277 exit(1); 278 } 279 } else { /* maybe blocking open */ 280 if (!opentty(ttyn, O_RDWR | (NC ? O_NONBLOCK : 0 ))) 281 exit(1); 282 } 283 } 284 } 285 286 defttymode(); 287 for (;;) { 288 289 /* 290 * if a delay was specified then sleep for that 291 * number of seconds before writing the initial prompt 292 */ 293 if (first_sleep && DE) { 294 sleep(DE); 295 /* remove any noise */ 296 (void)tcflush(STDIN_FILENO, TCIOFLUSH); 297 } 298 first_sleep = 0; 299 300 setttymode(0); 301 if (AB) { 302 tname = autobaud(); 303 dogettytab(); 304 continue; 305 } 306 if (PS) { 307 tname = portselector(); 308 dogettytab(); 309 continue; 310 } 311 if (CL && *CL) 312 putpad(CL); 313 edithost(HE); 314 315 /* if this is the first time through this, and an 316 issue file has been given, then send it */ 317 if (first_time && IF) { 318 int fd; 319 320 if ((fd = open(IF, O_RDONLY)) != -1) { 321 char * cp; 322 323 while ((cp = getline(fd)) != NULL) { 324 putf(cp); 325 } 326 close(fd); 327 } 328 } 329 first_time = 0; 330 331 if (IM && *IM && !(PL && PP)) 332 putf(IM); 333 if (setjmp(timeout)) { 334 cfsetispeed(&tmode, B0); 335 cfsetospeed(&tmode, B0); 336 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode); 337 exit(1); 338 } 339 if (TO) { 340 signal(SIGALRM, dingdong); 341 alarm(TO); 342 } 343 344 rval = 0; 345 if (AL) { 346 const char *p = AL; 347 char *q = name; 348 349 while (*p && q < &name[sizeof name - 1]) { 350 if (isupper(*p)) 351 upper = 1; 352 else if (islower(*p)) 353 lower = 1; 354 else if (isdigit(*p)) 355 digit = 1; 356 *q++ = *p++; 357 } 358 } else if (!(PL && PP)) 359 rval = getname(); 360 if (rval == 2 || (PL && PP)) { 361 oflush(); 362 alarm(0); 363 limit.rlim_max = RLIM_INFINITY; 364 limit.rlim_cur = RLIM_INFINITY; 365 (void)setrlimit(RLIMIT_CPU, &limit); 366 execle(PP, "ppplogin", ttyn, (char *) 0, env); 367 syslog(LOG_ERR, "%s: %m", PP); 368 exit(1); 369 } else if (rval || AL) { 370 int i; 371 372 oflush(); 373 alarm(0); 374 signal(SIGALRM, SIG_DFL); 375 if (name[0] == '\0') 376 continue; 377 if (name[0] == '-') { 378 puts("user names may not start with '-'."); 379 continue; 380 } 381 if (!(upper || lower || digit)) { 382 if (AL) { 383 syslog(LOG_ERR, 384 "invalid auto-login name: %s", AL); 385 exit(1); 386 } else 387 continue; 388 } 389 set_flags(2); 390 if (crmod) { 391 tmode.c_iflag |= ICRNL; 392 tmode.c_oflag |= ONLCR; 393 } 394 #if REALLY_OLD_TTYS 395 if (upper || UC) 396 tmode.sg_flags |= LCASE; 397 if (lower || LC) 398 tmode.sg_flags &= ~LCASE; 399 #endif 400 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) { 401 syslog(LOG_ERR, "tcsetattr %s: %m", ttyn); 402 exit(1); 403 } 404 signal(SIGINT, SIG_DFL); 405 for (i = 0; environ[i] != (char *)0; i++) 406 env[i] = environ[i]; 407 makeenv(&env[i]); 408 409 limit.rlim_max = RLIM_INFINITY; 410 limit.rlim_cur = RLIM_INFINITY; 411 (void)setrlimit(RLIMIT_CPU, &limit); 412 execle(LO, "login", AL ? "-fp" : "-p", name, 413 (char *) 0, env); 414 syslog(LOG_ERR, "%s: %m", LO); 415 exit(1); 416 } 417 alarm(0); 418 signal(SIGALRM, SIG_DFL); 419 signal(SIGINT, SIG_IGN); 420 if (NX && *NX) { 421 tname = NX; 422 dogettytab(); 423 } 424 } 425 } 426 427 static int 428 opentty(const char *tty, int flags) 429 { 430 int i; 431 int failopenlogged = 0; 432 433 while ((i = open(tty, flags)) == -1) 434 { 435 if (!failopenlogged) { 436 syslog(LOG_ERR, "open %s: %m", tty); 437 failopenlogged = 1; 438 } 439 sleep(60); 440 } 441 if (login_tty(i) < 0) { 442 if (daemon(0,0) < 0) { 443 syslog(LOG_ERR,"daemon: %m"); 444 close(i); 445 return 0; 446 } 447 if (login_tty(i) < 0) { 448 syslog(LOG_ERR, "login_tty %s: %m", tty); 449 close(i); 450 return 0; 451 } 452 } 453 return 1; 454 } 455 456 static void 457 defttymode() 458 { 459 460 /* Start with default tty settings. */ 461 if (tcgetattr(STDIN_FILENO, &tmode) < 0) { 462 syslog(LOG_ERR, "tcgetattr %s: %m", ttyn); 463 exit(1); 464 } 465 omode = tmode; /* fill c_cc for dogettytab() */ 466 dogettytab(); 467 /* 468 * Don't rely on the driver too much, and initialize crucial 469 * things according to <sys/ttydefaults.h>. Avoid clobbering 470 * the c_cc[] settings however, the console drivers might wish 471 * to leave their idea of the preferred VERASE key value 472 * there. 473 */ 474 tmode.c_iflag = TTYDEF_IFLAG; 475 tmode.c_oflag = TTYDEF_OFLAG; 476 tmode.c_lflag = TTYDEF_LFLAG; 477 tmode.c_cflag = TTYDEF_CFLAG; 478 if (NC) 479 tmode.c_cflag |= CLOCAL; 480 omode = tmode; 481 } 482 483 static void 484 setttymode(int raw) 485 { 486 int off = 0; 487 488 (void)tcflush(STDIN_FILENO, TCIOFLUSH); /* clear out the crap */ 489 ioctl(STDIN_FILENO, FIONBIO, &off); /* turn off non-blocking mode */ 490 ioctl(STDIN_FILENO, FIOASYNC, &off); /* ditto for async mode */ 491 492 if (IS) 493 cfsetispeed(&tmode, speed(IS)); 494 else if (SP) 495 cfsetispeed(&tmode, speed(SP)); 496 if (OS) 497 cfsetospeed(&tmode, speed(OS)); 498 else if (SP) 499 cfsetospeed(&tmode, speed(SP)); 500 set_flags(0); 501 setchars(); 502 if (raw) 503 cfmakeraw(&tmode); 504 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) { 505 syslog(LOG_ERR, "tcsetattr %s: %m", ttyn); 506 exit(1); 507 } 508 } 509 510 511 static int 512 getname(void) 513 { 514 int c; 515 char *np; 516 unsigned char cs; 517 int ppp_state = 0; 518 int ppp_connection = 0; 519 520 /* 521 * Interrupt may happen if we use CBREAK mode 522 */ 523 if (setjmp(intrupt)) { 524 signal(SIGINT, SIG_IGN); 525 return (0); 526 } 527 signal(SIGINT, interrupt); 528 set_flags(1); 529 prompt(); 530 oflush(); 531 if (PF > 0) { 532 sleep(PF); 533 PF = 0; 534 } 535 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) { 536 syslog(LOG_ERR, "%s: %m", ttyn); 537 exit(1); 538 } 539 crmod = digit = lower = upper = 0; 540 np = name; 541 for (;;) { 542 oflush(); 543 if (read(STDIN_FILENO, &cs, 1) <= 0) 544 exit(0); 545 if ((c = cs&0177) == 0) 546 return (0); 547 548 /* PPP detection state machine.. 549 Look for sequences: 550 PPP_FRAME, PPP_STATION, PPP_ESCAPE, PPP_CONTROL_ESCAPED or 551 PPP_FRAME, PPP_STATION, PPP_CONTROL (deviant from RFC) 552 See RFC1662. 553 Derived from code from Michael Hancock, <michaelh@cet.co.jp> 554 and Erik 'PPP' Olson, <eriko@wrq.com> 555 */ 556 557 if (PP && (cs == PPP_FRAME)) { 558 ppp_state = 1; 559 } else if (ppp_state == 1 && cs == PPP_STATION) { 560 ppp_state = 2; 561 } else if (ppp_state == 2 && cs == PPP_ESCAPE) { 562 ppp_state = 3; 563 } else if ((ppp_state == 2 && cs == PPP_CONTROL) 564 || (ppp_state == 3 && cs == PPP_CONTROL_ESCAPED)) { 565 ppp_state = 4; 566 } else if (ppp_state == 4 && cs == PPP_LCP_HI) { 567 ppp_state = 5; 568 } else if (ppp_state == 5 && cs == PPP_LCP_LOW) { 569 ppp_connection = 1; 570 break; 571 } else { 572 ppp_state = 0; 573 } 574 575 if (c == EOT || c == CTRL('d')) 576 exit(0); 577 if (c == '\r' || c == '\n' || np >= &name[sizeof name-1]) { 578 putf("\r\n"); 579 break; 580 } 581 if (islower(c)) 582 lower = 1; 583 else if (isupper(c)) 584 upper = 1; 585 else if (c == ERASE || c == '\b' || c == 0177) { 586 if (np > name) { 587 np--; 588 if (cfgetospeed(&tmode) >= 1200) 589 puts("\b \b"); 590 else 591 putchr(cs); 592 } 593 continue; 594 } else if (c == KILL || c == CTRL('u')) { 595 putchr('\r'); 596 if (cfgetospeed(&tmode) < 1200) 597 putchr('\n'); 598 /* this is the way they do it down under ... */ 599 else if (np > name) 600 puts(" \r"); 601 prompt(); 602 digit = lower = upper = 0; 603 np = name; 604 continue; 605 } else if (isdigit(c)) 606 digit = 1; 607 if (IG && (c <= ' ' || c > 0176)) 608 continue; 609 *np++ = c; 610 putchr(cs); 611 } 612 signal(SIGINT, SIG_IGN); 613 *np = 0; 614 if (c == '\r') 615 crmod = 1; 616 if ((upper && !lower && !LC) || UC) 617 for (np = name; *np; np++) 618 if (isupper(*np)) 619 *np = tolower(*np); 620 return (1 + ppp_connection); 621 } 622 623 static void 624 putpad(const char *s) 625 { 626 int pad = 0; 627 speed_t ospeed = cfgetospeed(&tmode); 628 629 if (isdigit(*s)) { 630 while (isdigit(*s)) { 631 pad *= 10; 632 pad += *s++ - '0'; 633 } 634 pad *= 10; 635 if (*s == '.' && isdigit(s[1])) { 636 pad += s[1] - '0'; 637 s += 2; 638 } 639 } 640 641 puts(s); 642 /* 643 * If no delay needed, or output speed is 644 * not comprehensible, then don't try to delay. 645 */ 646 if (pad == 0 || ospeed <= 0) 647 return; 648 649 /* 650 * Round up by a half a character frame, and then do the delay. 651 * Too bad there are no user program accessible programmed delays. 652 * Transmitting pad characters slows many terminals down and also 653 * loads the system. 654 */ 655 pad = (pad * ospeed + 50000) / 100000; 656 while (pad--) 657 putchr(*PC); 658 } 659 660 static void 661 puts(const char *s) 662 { 663 while (*s) 664 putchr(*s++); 665 } 666 667 char outbuf[OBUFSIZ]; 668 int obufcnt = 0; 669 670 static void 671 putchr(int cc) 672 { 673 char c; 674 675 c = cc; 676 if (!NP) { 677 c |= partab[c&0177] & 0200; 678 if (OP) 679 c ^= 0200; 680 } 681 if (!UB) { 682 outbuf[obufcnt++] = c; 683 if (obufcnt >= OBUFSIZ) 684 oflush(); 685 } else 686 write(STDOUT_FILENO, &c, 1); 687 } 688 689 static void 690 oflush(void) 691 { 692 if (obufcnt) 693 write(STDOUT_FILENO, outbuf, obufcnt); 694 obufcnt = 0; 695 } 696 697 static void 698 prompt(void) 699 { 700 701 putf(LM); 702 if (CO) 703 putchr('\n'); 704 } 705 706 707 static char * 708 getline(int fd) 709 { 710 int i = 0; 711 static char linebuf[512]; 712 713 /* 714 * This is certainly slow, but it avoids having to include 715 * stdio.h unnecessarily. Issue files should be small anyway. 716 */ 717 while (i < (sizeof linebuf - 3) && read(fd, linebuf+i, 1)==1) { 718 if (linebuf[i] == '\n') { 719 /* Don't rely on newline mode, assume raw */ 720 linebuf[i++] = '\r'; 721 linebuf[i++] = '\n'; 722 linebuf[i] = '\0'; 723 return linebuf; 724 } 725 ++i; 726 } 727 linebuf[i] = '\0'; 728 return i ? linebuf : 0; 729 } 730 731 static void 732 putf(const char *cp) 733 { 734 extern char editedhost[]; 735 time_t t; 736 char *slash, db[100]; 737 738 static struct utsname kerninfo; 739 740 if (!*kerninfo.sysname) 741 uname(&kerninfo); 742 743 while (*cp) { 744 if (*cp != '%') { 745 putchr(*cp++); 746 continue; 747 } 748 switch (*++cp) { 749 750 case 't': 751 slash = strrchr(ttyn, '/'); 752 if (slash == (char *) 0) 753 puts(ttyn); 754 else 755 puts(&slash[1]); 756 break; 757 758 case 'h': 759 puts(editedhost); 760 break; 761 762 case 'd': { 763 t = (time_t)0; 764 (void)time(&t); 765 if (Lo) 766 (void)setlocale(LC_TIME, Lo); 767 (void)strftime(db, sizeof(db), DF, localtime(&t)); 768 puts(db); 769 break; 770 771 case 's': 772 puts(kerninfo.sysname); 773 break; 774 775 case 'm': 776 puts(kerninfo.machine); 777 break; 778 779 case 'r': 780 puts(kerninfo.release); 781 break; 782 783 case 'v': 784 puts(kerninfo.version); 785 break; 786 } 787 788 case '%': 789 putchr('%'); 790 break; 791 } 792 cp++; 793 } 794 } 795 796 /* 797 * Read a gettytab database entry and perform necessary quirks. 798 */ 799 static void 800 dogettytab() 801 { 802 803 /* Read the database entry. */ 804 gettable(tname, tabent); 805 806 /* 807 * Avoid inheriting the parity values from the default entry 808 * if any of them is set in the current entry. 809 * Mixing different parity settings is unreasonable. 810 */ 811 if (OPset || EPset || APset || NPset) 812 OPset = EPset = APset = NPset = 1; 813 814 /* Fill in default values for unset capabilities. */ 815 setdefaults(); 816 } 817