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 #endif /* not lint */ 45 #include <sys/cdefs.h> 46 __FBSDID("$FreeBSD$"); 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(void) 458 { 459 struct termios def; 460 461 /* Start with default tty settings. */ 462 if (tcgetattr(STDIN_FILENO, &tmode) < 0) { 463 syslog(LOG_ERR, "tcgetattr %s: %m", ttyn); 464 exit(1); 465 } 466 omode = tmode; /* fill c_cc for dogettytab() */ 467 dogettytab(); 468 /* 469 * Don't rely on the driver too much, and initialize crucial 470 * things according to <sys/ttydefaults.h>. Avoid clobbering 471 * the c_cc[] settings however, the console drivers might wish 472 * to leave their idea of the preferred VERASE key value 473 * there. 474 */ 475 cfmakesane(&def); 476 tmode.c_iflag = def.c_iflag; 477 tmode.c_oflag = def.c_oflag; 478 tmode.c_lflag = def.c_lflag; 479 tmode.c_cflag = def.c_cflag; 480 if (NC) 481 tmode.c_cflag |= CLOCAL; 482 omode = tmode; 483 } 484 485 static void 486 setttymode(int raw) 487 { 488 int off = 0; 489 490 (void)tcflush(STDIN_FILENO, TCIOFLUSH); /* clear out the crap */ 491 ioctl(STDIN_FILENO, FIONBIO, &off); /* turn off non-blocking mode */ 492 ioctl(STDIN_FILENO, FIOASYNC, &off); /* ditto for async mode */ 493 494 if (IS) 495 cfsetispeed(&tmode, speed(IS)); 496 else if (SP) 497 cfsetispeed(&tmode, speed(SP)); 498 if (OS) 499 cfsetospeed(&tmode, speed(OS)); 500 else if (SP) 501 cfsetospeed(&tmode, speed(SP)); 502 set_flags(0); 503 setchars(); 504 if (raw) 505 cfmakeraw(&tmode); 506 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) { 507 syslog(LOG_ERR, "tcsetattr %s: %m", ttyn); 508 exit(1); 509 } 510 } 511 512 513 static int 514 getname(void) 515 { 516 int c; 517 char *np; 518 unsigned char cs; 519 int ppp_state = 0; 520 int ppp_connection = 0; 521 522 /* 523 * Interrupt may happen if we use CBREAK mode 524 */ 525 if (setjmp(intrupt)) { 526 signal(SIGINT, SIG_IGN); 527 return (0); 528 } 529 signal(SIGINT, interrupt); 530 set_flags(1); 531 prompt(); 532 oflush(); 533 if (PF > 0) { 534 sleep(PF); 535 PF = 0; 536 } 537 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) { 538 syslog(LOG_ERR, "%s: %m", ttyn); 539 exit(1); 540 } 541 crmod = digit = lower = upper = 0; 542 np = name; 543 for (;;) { 544 oflush(); 545 if (read(STDIN_FILENO, &cs, 1) <= 0) 546 exit(0); 547 if ((c = cs&0177) == 0) 548 return (0); 549 550 /* PPP detection state machine.. 551 Look for sequences: 552 PPP_FRAME, PPP_STATION, PPP_ESCAPE, PPP_CONTROL_ESCAPED or 553 PPP_FRAME, PPP_STATION, PPP_CONTROL (deviant from RFC) 554 See RFC1662. 555 Derived from code from Michael Hancock, <michaelh@cet.co.jp> 556 and Erik 'PPP' Olson, <eriko@wrq.com> 557 */ 558 559 if (PP && (cs == PPP_FRAME)) { 560 ppp_state = 1; 561 } else if (ppp_state == 1 && cs == PPP_STATION) { 562 ppp_state = 2; 563 } else if (ppp_state == 2 && cs == PPP_ESCAPE) { 564 ppp_state = 3; 565 } else if ((ppp_state == 2 && cs == PPP_CONTROL) 566 || (ppp_state == 3 && cs == PPP_CONTROL_ESCAPED)) { 567 ppp_state = 4; 568 } else if (ppp_state == 4 && cs == PPP_LCP_HI) { 569 ppp_state = 5; 570 } else if (ppp_state == 5 && cs == PPP_LCP_LOW) { 571 ppp_connection = 1; 572 break; 573 } else { 574 ppp_state = 0; 575 } 576 577 if (c == EOT || c == CTRL('d')) 578 exit(0); 579 if (c == '\r' || c == '\n' || np >= &name[sizeof name-1]) { 580 putf("\r\n"); 581 break; 582 } 583 if (islower(c)) 584 lower = 1; 585 else if (isupper(c)) 586 upper = 1; 587 else if (c == ERASE || c == '\b' || c == 0177) { 588 if (np > name) { 589 np--; 590 if (cfgetospeed(&tmode) >= 1200) 591 puts("\b \b"); 592 else 593 putchr(cs); 594 } 595 continue; 596 } else if (c == KILL || c == CTRL('u')) { 597 putchr('\r'); 598 if (cfgetospeed(&tmode) < 1200) 599 putchr('\n'); 600 /* this is the way they do it down under ... */ 601 else if (np > name) 602 puts(" \r"); 603 prompt(); 604 digit = lower = upper = 0; 605 np = name; 606 continue; 607 } else if (isdigit(c)) 608 digit = 1; 609 if (IG && (c <= ' ' || c > 0176)) 610 continue; 611 *np++ = c; 612 putchr(cs); 613 } 614 signal(SIGINT, SIG_IGN); 615 *np = 0; 616 if (c == '\r') 617 crmod = 1; 618 if ((upper && !lower && !LC) || UC) 619 for (np = name; *np; np++) 620 if (isupper(*np)) 621 *np = tolower(*np); 622 return (1 + ppp_connection); 623 } 624 625 static void 626 putpad(const char *s) 627 { 628 int pad = 0; 629 speed_t ospeed = cfgetospeed(&tmode); 630 631 if (isdigit(*s)) { 632 while (isdigit(*s)) { 633 pad *= 10; 634 pad += *s++ - '0'; 635 } 636 pad *= 10; 637 if (*s == '.' && isdigit(s[1])) { 638 pad += s[1] - '0'; 639 s += 2; 640 } 641 } 642 643 puts(s); 644 /* 645 * If no delay needed, or output speed is 646 * not comprehensible, then don't try to delay. 647 */ 648 if (pad == 0 || ospeed <= 0) 649 return; 650 651 /* 652 * Round up by a half a character frame, and then do the delay. 653 * Too bad there are no user program accessible programmed delays. 654 * Transmitting pad characters slows many terminals down and also 655 * loads the system. 656 */ 657 pad = (pad * ospeed + 50000) / 100000; 658 while (pad--) 659 putchr(*PC); 660 } 661 662 static void 663 puts(const char *s) 664 { 665 while (*s) 666 putchr(*s++); 667 } 668 669 char outbuf[OBUFSIZ]; 670 int obufcnt = 0; 671 672 static void 673 putchr(int cc) 674 { 675 char c; 676 677 c = cc; 678 if (!NP) { 679 c |= partab[c&0177] & 0200; 680 if (OP) 681 c ^= 0200; 682 } 683 if (!UB) { 684 outbuf[obufcnt++] = c; 685 if (obufcnt >= OBUFSIZ) 686 oflush(); 687 } else 688 write(STDOUT_FILENO, &c, 1); 689 } 690 691 static void 692 oflush(void) 693 { 694 if (obufcnt) 695 write(STDOUT_FILENO, outbuf, obufcnt); 696 obufcnt = 0; 697 } 698 699 static void 700 prompt(void) 701 { 702 703 putf(LM); 704 if (CO) 705 putchr('\n'); 706 } 707 708 709 static char * 710 getline(int fd) 711 { 712 int i = 0; 713 static char linebuf[512]; 714 715 /* 716 * This is certainly slow, but it avoids having to include 717 * stdio.h unnecessarily. Issue files should be small anyway. 718 */ 719 while (i < (sizeof linebuf - 3) && read(fd, linebuf+i, 1)==1) { 720 if (linebuf[i] == '\n') { 721 /* Don't rely on newline mode, assume raw */ 722 linebuf[i++] = '\r'; 723 linebuf[i++] = '\n'; 724 linebuf[i] = '\0'; 725 return linebuf; 726 } 727 ++i; 728 } 729 linebuf[i] = '\0'; 730 return i ? linebuf : 0; 731 } 732 733 static void 734 putf(const char *cp) 735 { 736 extern char editedhost[]; 737 time_t t; 738 char *slash, db[100]; 739 740 static struct utsname kerninfo; 741 742 if (!*kerninfo.sysname) 743 uname(&kerninfo); 744 745 while (*cp) { 746 if (*cp != '%') { 747 putchr(*cp++); 748 continue; 749 } 750 switch (*++cp) { 751 752 case 't': 753 slash = strrchr(ttyn, '/'); 754 if (slash == (char *) 0) 755 puts(ttyn); 756 else 757 puts(&slash[1]); 758 break; 759 760 case 'h': 761 puts(editedhost); 762 break; 763 764 case 'd': { 765 t = (time_t)0; 766 (void)time(&t); 767 if (Lo) 768 (void)setlocale(LC_TIME, Lo); 769 (void)strftime(db, sizeof(db), DF, localtime(&t)); 770 puts(db); 771 break; 772 773 case 's': 774 puts(kerninfo.sysname); 775 break; 776 777 case 'm': 778 puts(kerninfo.machine); 779 break; 780 781 case 'r': 782 puts(kerninfo.release); 783 break; 784 785 case 'v': 786 puts(kerninfo.version); 787 break; 788 } 789 790 case '%': 791 putchr('%'); 792 break; 793 } 794 cp++; 795 } 796 } 797 798 /* 799 * Read a gettytab database entry and perform necessary quirks. 800 */ 801 static void 802 dogettytab(void) 803 { 804 805 /* Read the database entry. */ 806 gettable(tname, tabent); 807 808 /* 809 * Avoid inheriting the parity values from the default entry 810 * if any of them is set in the current entry. 811 * Mixing different parity settings is unreasonable. 812 */ 813 if (OPset || EPset || APset || NPset) 814 OPset = EPset = APset = NPset = 1; 815 816 /* Fill in default values for unset capabilities. */ 817 setdefaults(); 818 } 819