1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static const char copyright[] = 34 "@(#) Copyright (c) 1980, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)from: main.c 8.1 (Berkeley) 6/20/93"; 41 #endif 42 #endif /* not lint */ 43 #include <sys/cdefs.h> 44 __FBSDID("$FreeBSD$"); 45 46 #include <sys/param.h> 47 #include <sys/ioctl.h> 48 #include <sys/time.h> 49 #include <sys/resource.h> 50 #include <sys/stat.h> 51 #include <sys/ttydefaults.h> 52 #include <sys/utsname.h> 53 54 #include <ctype.h> 55 #include <errno.h> 56 #include <fcntl.h> 57 #include <locale.h> 58 #include <libutil.h> 59 #include <setjmp.h> 60 #include <signal.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <syslog.h> 64 #include <termios.h> 65 #include <time.h> 66 #include <unistd.h> 67 68 #include "gettytab.h" 69 #include "extern.h" 70 #include "pathnames.h" 71 72 /* 73 * Set the amount of running time that getty should accumulate 74 * before deciding that something is wrong and exit. 75 */ 76 #define GETTY_TIMEOUT 60 /* seconds */ 77 78 #undef CTRL 79 #define CTRL(x) (x&037) 80 81 /* defines for auto detection of incoming PPP calls (->PAP/CHAP) */ 82 83 #define PPP_FRAME 0x7e /* PPP Framing character */ 84 #define PPP_STATION 0xff /* "All Station" character */ 85 #define PPP_ESCAPE 0x7d /* Escape Character */ 86 #define PPP_CONTROL 0x03 /* PPP Control Field */ 87 #define PPP_CONTROL_ESCAPED 0x23 /* PPP Control Field, escaped */ 88 #define PPP_LCP_HI 0xc0 /* LCP protocol - high byte */ 89 #define PPP_LCP_LOW 0x21 /* LCP protocol - low byte */ 90 91 /* original mode; flags've been reset using values from <sys/ttydefaults.h> */ 92 struct termios omode; 93 /* current mode */ 94 struct termios tmode; 95 96 static int crmod, digit, lower, upper; 97 98 char hostname[MAXHOSTNAMELEN]; 99 static char name[MAXLOGNAME*3]; 100 static char dev[] = _PATH_DEV; 101 static char ttyn[32]; 102 103 #define OBUFSIZ 128 104 #define TABBUFSIZ 512 105 106 static char defent[TABBUFSIZ]; 107 static char tabent[TABBUFSIZ]; 108 static const char *tname; 109 110 static char *env[128]; 111 112 static char partab[] = { 113 0001,0201,0201,0001,0201,0001,0001,0201, 114 0202,0004,0003,0205,0005,0206,0201,0001, 115 0201,0001,0001,0201,0001,0201,0201,0001, 116 0001,0201,0201,0001,0201,0001,0001,0201, 117 0200,0000,0000,0200,0000,0200,0200,0000, 118 0000,0200,0200,0000,0200,0000,0000,0200, 119 0000,0200,0200,0000,0200,0000,0000,0200, 120 0200,0000,0000,0200,0000,0200,0200,0000, 121 0200,0000,0000,0200,0000,0200,0200,0000, 122 0000,0200,0200,0000,0200,0000,0000,0200, 123 0000,0200,0200,0000,0200,0000,0000,0200, 124 0200,0000,0000,0200,0000,0200,0200,0000, 125 0000,0200,0200,0000,0200,0000,0000,0200, 126 0200,0000,0000,0200,0000,0200,0200,0000, 127 0200,0000,0000,0200,0000,0200,0200,0000, 128 0000,0200,0200,0000,0200,0000,0000,0201 129 }; 130 131 #define ERASE tmode.c_cc[VERASE] 132 #define KILL tmode.c_cc[VKILL] 133 #define EOT tmode.c_cc[VEOF] 134 135 #define puts Gputs 136 137 static void defttymode(void); 138 static void dingdong(int); 139 static void dogettytab(void); 140 static int getname(void); 141 static void interrupt(int); 142 static void oflush(void); 143 static void prompt(void); 144 static void putchr(int); 145 static void putf(const char *); 146 static void putpad(const char *); 147 static void puts(const char *); 148 static void timeoverrun(int); 149 static char *get_line(int); 150 static void setttymode(int); 151 static int opentty(const char *, int); 152 153 static jmp_buf timeout; 154 155 static void 156 dingdong(int signo __unused) 157 { 158 alarm(0); 159 longjmp(timeout, 1); 160 } 161 162 static jmp_buf intrupt; 163 164 static void 165 interrupt(int signo __unused) 166 { 167 longjmp(intrupt, 1); 168 } 169 170 /* 171 * Action to take when getty is running too long. 172 */ 173 static void 174 timeoverrun(int signo __unused) 175 { 176 177 syslog(LOG_ERR, "getty exiting due to excessive running time"); 178 exit(1); 179 } 180 181 int 182 main(int argc, char *argv[]) 183 { 184 int first_sleep = 1, first_time = 1; 185 struct rlimit limit; 186 int rval; 187 188 signal(SIGINT, SIG_IGN); 189 signal(SIGQUIT, SIG_IGN); 190 191 openlog("getty", LOG_CONS|LOG_PID, LOG_AUTH); 192 gethostname(hostname, sizeof(hostname) - 1); 193 hostname[sizeof(hostname) - 1] = '\0'; 194 if (hostname[0] == '\0') 195 strcpy(hostname, "Amnesiac"); 196 197 /* 198 * Limit running time to deal with broken or dead lines. 199 */ 200 (void)signal(SIGXCPU, timeoverrun); 201 limit.rlim_max = RLIM_INFINITY; 202 limit.rlim_cur = GETTY_TIMEOUT; 203 (void)setrlimit(RLIMIT_CPU, &limit); 204 205 gettable("default", defent); 206 gendefaults(); 207 tname = "default"; 208 if (argc > 1) 209 tname = argv[1]; 210 211 /* 212 * The following is a work around for vhangup interactions 213 * which cause great problems getting window systems started. 214 * If the tty line is "-", we do the old style getty presuming 215 * that the file descriptors are already set up for us. 216 * J. Gettys - MIT Project Athena. 217 */ 218 if (argc <= 2 || strcmp(argv[2], "-") == 0) 219 strcpy(ttyn, ttyname(STDIN_FILENO)); 220 else { 221 strcpy(ttyn, dev); 222 strncat(ttyn, argv[2], sizeof(ttyn)-sizeof(dev)); 223 if (strcmp(argv[0], "+") != 0) { 224 chown(ttyn, 0, 0); 225 chmod(ttyn, 0600); 226 revoke(ttyn); 227 228 /* 229 * Do the first scan through gettytab. 230 * Terminal mode parameters will be wrong until 231 * defttymode() called, but they're irrelevant for 232 * the initial setup of the terminal device. 233 */ 234 dogettytab(); 235 236 /* 237 * Init or answer modem sequence has been specified. 238 */ 239 if (IC || AC) { 240 if (!opentty(ttyn, O_RDWR|O_NONBLOCK)) 241 exit(1); 242 defttymode(); 243 setttymode(1); 244 } 245 246 if (IC) { 247 if (getty_chat(IC, CT, DC) > 0) { 248 syslog(LOG_ERR, "modem init problem on %s", ttyn); 249 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode); 250 exit(1); 251 } 252 } 253 254 if (AC) { 255 fd_set rfds; 256 struct timeval to; 257 int i; 258 259 FD_ZERO(&rfds); 260 FD_SET(0, &rfds); 261 to.tv_sec = RT; 262 to.tv_usec = 0; 263 i = select(32, &rfds, NULL, NULL, RT ? &to : NULL); 264 if (i < 0) { 265 syslog(LOG_ERR, "select %s: %m", ttyn); 266 } else if (i == 0) { 267 syslog(LOG_NOTICE, "recycle tty %s", ttyn); 268 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode); 269 exit(0); /* recycle for init */ 270 } 271 i = getty_chat(AC, CT, DC); 272 if (i > 0) { 273 syslog(LOG_ERR, "modem answer problem on %s", ttyn); 274 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode); 275 exit(1); 276 } 277 } else { /* maybe blocking open */ 278 if (!opentty(ttyn, O_RDWR | (NC ? O_NONBLOCK : 0 ))) 279 exit(1); 280 } 281 } 282 } 283 284 defttymode(); 285 for (;;) { 286 287 /* 288 * if a delay was specified then sleep for that 289 * number of seconds before writing the initial prompt 290 */ 291 if (first_sleep && DE) { 292 sleep(DE); 293 /* remove any noise */ 294 (void)tcflush(STDIN_FILENO, TCIOFLUSH); 295 } 296 first_sleep = 0; 297 298 setttymode(0); 299 if (AB) { 300 tname = autobaud(); 301 dogettytab(); 302 continue; 303 } 304 if (PS) { 305 tname = portselector(); 306 dogettytab(); 307 continue; 308 } 309 if (CL && *CL) 310 putpad(CL); 311 edithost(HE); 312 313 /* if this is the first time through this, and an 314 issue file has been given, then send it */ 315 if (first_time && IF) { 316 int fd; 317 318 if ((fd = open(IF, O_RDONLY)) != -1) { 319 char * cp; 320 321 while ((cp = get_line(fd)) != NULL) { 322 putf(cp); 323 } 324 close(fd); 325 } 326 } 327 first_time = 0; 328 329 if (IMP && *IMP && !(PL && PP)) 330 system(IMP); 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 failopenlogged = 0, i, saved_errno; 431 432 while ((i = open(tty, flags)) == -1) 433 { 434 saved_errno = errno; 435 if (!failopenlogged) { 436 syslog(LOG_ERR, "open %s: %m", tty); 437 failopenlogged = 1; 438 } 439 if (saved_errno == ENOENT) 440 return 0; 441 sleep(60); 442 } 443 if (login_tty(i) < 0) { 444 if (daemon(0,0) < 0) { 445 syslog(LOG_ERR,"daemon: %m"); 446 close(i); 447 return 0; 448 } 449 if (login_tty(i) < 0) { 450 syslog(LOG_ERR, "login_tty %s: %m", tty); 451 close(i); 452 return 0; 453 } 454 } 455 return 1; 456 } 457 458 static void 459 defttymode(void) 460 { 461 struct termios def; 462 463 /* Start with default tty settings. */ 464 if (tcgetattr(STDIN_FILENO, &tmode) < 0) { 465 syslog(LOG_ERR, "tcgetattr %s: %m", ttyn); 466 exit(1); 467 } 468 omode = tmode; /* fill c_cc for dogettytab() */ 469 dogettytab(); 470 /* 471 * Don't rely on the driver too much, and initialize crucial 472 * things according to <sys/ttydefaults.h>. Avoid clobbering 473 * the c_cc[] settings however, the console drivers might wish 474 * to leave their idea of the preferred VERASE key value 475 * there. 476 */ 477 cfmakesane(&def); 478 tmode.c_iflag = def.c_iflag; 479 tmode.c_oflag = def.c_oflag; 480 tmode.c_lflag = def.c_lflag; 481 tmode.c_cflag = def.c_cflag; 482 if (NC) 483 tmode.c_cflag |= CLOCAL; 484 omode = tmode; 485 } 486 487 static void 488 setttymode(int raw) 489 { 490 int off = 0; 491 492 (void)tcflush(STDIN_FILENO, TCIOFLUSH); /* clear out the crap */ 493 ioctl(STDIN_FILENO, FIONBIO, &off); /* turn off non-blocking mode */ 494 ioctl(STDIN_FILENO, FIOASYNC, &off); /* ditto for async mode */ 495 496 if (IS) 497 cfsetispeed(&tmode, speed(IS)); 498 else if (SP) 499 cfsetispeed(&tmode, speed(SP)); 500 if (OS) 501 cfsetospeed(&tmode, speed(OS)); 502 else if (SP) 503 cfsetospeed(&tmode, speed(SP)); 504 set_flags(0); 505 setchars(); 506 if (raw) 507 cfmakeraw(&tmode); 508 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) { 509 syslog(LOG_ERR, "tcsetattr %s: %m", ttyn); 510 exit(1); 511 } 512 } 513 514 515 static int 516 getname(void) 517 { 518 int c; 519 char *np; 520 unsigned char cs; 521 int ppp_state = 0; 522 int ppp_connection = 0; 523 524 /* 525 * Interrupt may happen if we use CBREAK mode 526 */ 527 if (setjmp(intrupt)) { 528 signal(SIGINT, SIG_IGN); 529 return (0); 530 } 531 signal(SIGINT, interrupt); 532 set_flags(1); 533 prompt(); 534 oflush(); 535 if (PF > 0) { 536 sleep(PF); 537 PF = 0; 538 } 539 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) { 540 syslog(LOG_ERR, "%s: %m", ttyn); 541 exit(1); 542 } 543 crmod = digit = lower = upper = 0; 544 np = name; 545 for (;;) { 546 oflush(); 547 if (read(STDIN_FILENO, &cs, 1) <= 0) 548 exit(0); 549 if ((c = cs&0177) == 0) 550 return (0); 551 552 /* PPP detection state machine.. 553 Look for sequences: 554 PPP_FRAME, PPP_STATION, PPP_ESCAPE, PPP_CONTROL_ESCAPED or 555 PPP_FRAME, PPP_STATION, PPP_CONTROL (deviant from RFC) 556 See RFC1662. 557 Derived from code from Michael Hancock, <michaelh@cet.co.jp> 558 and Erik 'PPP' Olson, <eriko@wrq.com> 559 */ 560 561 if (PP && (cs == PPP_FRAME)) { 562 ppp_state = 1; 563 } else if (ppp_state == 1 && cs == PPP_STATION) { 564 ppp_state = 2; 565 } else if (ppp_state == 2 && cs == PPP_ESCAPE) { 566 ppp_state = 3; 567 } else if ((ppp_state == 2 && cs == PPP_CONTROL) 568 || (ppp_state == 3 && cs == PPP_CONTROL_ESCAPED)) { 569 ppp_state = 4; 570 } else if (ppp_state == 4 && cs == PPP_LCP_HI) { 571 ppp_state = 5; 572 } else if (ppp_state == 5 && cs == PPP_LCP_LOW) { 573 ppp_connection = 1; 574 break; 575 } else { 576 ppp_state = 0; 577 } 578 579 if (c == EOT || c == CTRL('d')) 580 exit(0); 581 if (c == '\r' || c == '\n' || np >= &name[sizeof name-1]) { 582 putf("\r\n"); 583 break; 584 } 585 if (islower(c)) 586 lower = 1; 587 else if (isupper(c)) 588 upper = 1; 589 else if (c == ERASE || c == '\b' || c == 0177) { 590 if (np > name) { 591 np--; 592 if (cfgetospeed(&tmode) >= 1200) 593 puts("\b \b"); 594 else 595 putchr(cs); 596 } 597 continue; 598 } else if (c == KILL || c == CTRL('u')) { 599 putchr('\r'); 600 if (cfgetospeed(&tmode) < 1200) 601 putchr('\n'); 602 /* this is the way they do it down under ... */ 603 else if (np > name) 604 puts(" \r"); 605 prompt(); 606 digit = lower = upper = 0; 607 np = name; 608 continue; 609 } else if (isdigit(c)) 610 digit = 1; 611 if (IG && (c <= ' ' || c > 0176)) 612 continue; 613 *np++ = c; 614 putchr(cs); 615 } 616 signal(SIGINT, SIG_IGN); 617 *np = 0; 618 if (c == '\r') 619 crmod = 1; 620 if ((upper && !lower && !LC) || UC) 621 for (np = name; *np; np++) 622 if (isupper(*np)) 623 *np = tolower(*np); 624 return (1 + ppp_connection); 625 } 626 627 static void 628 putpad(const char *s) 629 { 630 int pad = 0; 631 speed_t ospeed = cfgetospeed(&tmode); 632 633 if (isdigit(*s)) { 634 while (isdigit(*s)) { 635 pad *= 10; 636 pad += *s++ - '0'; 637 } 638 pad *= 10; 639 if (*s == '.' && isdigit(s[1])) { 640 pad += s[1] - '0'; 641 s += 2; 642 } 643 } 644 645 puts(s); 646 /* 647 * If no delay needed, or output speed is 648 * not comprehensible, then don't try to delay. 649 */ 650 if (pad == 0 || ospeed <= 0) 651 return; 652 653 /* 654 * Round up by a half a character frame, and then do the delay. 655 * Too bad there are no user program accessible programmed delays. 656 * Transmitting pad characters slows many terminals down and also 657 * loads the system. 658 */ 659 pad = (pad * ospeed + 50000) / 100000; 660 while (pad--) 661 putchr(*PC); 662 } 663 664 static void 665 puts(const char *s) 666 { 667 while (*s) 668 putchr(*s++); 669 } 670 671 static char outbuf[OBUFSIZ]; 672 static int obufcnt = 0; 673 674 static void 675 putchr(int cc) 676 { 677 char c; 678 679 c = cc; 680 if (!NP) { 681 c |= partab[c&0177] & 0200; 682 if (OP) 683 c ^= 0200; 684 } 685 if (!UB) { 686 outbuf[obufcnt++] = c; 687 if (obufcnt >= OBUFSIZ) 688 oflush(); 689 } else 690 write(STDOUT_FILENO, &c, 1); 691 } 692 693 static void 694 oflush(void) 695 { 696 if (obufcnt) 697 write(STDOUT_FILENO, outbuf, obufcnt); 698 obufcnt = 0; 699 } 700 701 static void 702 prompt(void) 703 { 704 705 putf(LM); 706 if (CO) 707 putchr('\n'); 708 } 709 710 711 static char * 712 get_line(int fd) 713 { 714 size_t i = 0; 715 static char linebuf[512]; 716 717 /* 718 * This is certainly slow, but it avoids having to include 719 * stdio.h unnecessarily. Issue files should be small anyway. 720 */ 721 while (i < (sizeof linebuf - 3) && read(fd, linebuf+i, 1)==1) { 722 if (linebuf[i] == '\n') { 723 /* Don't rely on newline mode, assume raw */ 724 linebuf[i++] = '\r'; 725 linebuf[i++] = '\n'; 726 linebuf[i] = '\0'; 727 return linebuf; 728 } 729 ++i; 730 } 731 linebuf[i] = '\0'; 732 return i ? linebuf : 0; 733 } 734 735 static void 736 putf(const char *cp) 737 { 738 time_t t; 739 char *slash, db[100]; 740 741 static struct utsname kerninfo; 742 743 if (!*kerninfo.sysname) 744 uname(&kerninfo); 745 746 while (*cp) { 747 if (*cp != '%') { 748 putchr(*cp++); 749 continue; 750 } 751 switch (*++cp) { 752 753 case 't': 754 slash = strrchr(ttyn, '/'); 755 if (slash == (char *) 0) 756 puts(ttyn); 757 else 758 puts(&slash[1]); 759 break; 760 761 case 'h': 762 puts(editedhost); 763 break; 764 765 case 'd': { 766 t = (time_t)0; 767 (void)time(&t); 768 if (Lo) 769 (void)setlocale(LC_TIME, Lo); 770 (void)strftime(db, sizeof(db), DF, localtime(&t)); 771 puts(db); 772 break; 773 774 case 's': 775 puts(kerninfo.sysname); 776 break; 777 778 case 'm': 779 puts(kerninfo.machine); 780 break; 781 782 case 'r': 783 puts(kerninfo.release); 784 break; 785 786 case 'v': 787 puts(kerninfo.version); 788 break; 789 } 790 791 case '%': 792 putchr('%'); 793 break; 794 } 795 cp++; 796 } 797 } 798 799 /* 800 * Read a gettytab database entry and perform necessary quirks. 801 */ 802 static void 803 dogettytab(void) 804 { 805 806 /* Read the database entry. */ 807 gettable(tname, tabent); 808 809 /* 810 * Avoid inheriting the parity values from the default entry 811 * if any of them is set in the current entry. 812 * Mixing different parity settings is unreasonable. 813 */ 814 if (OPset || EPset || APset || NPset) 815 OPset = EPset = APset = NPset = 1; 816 817 /* Fill in default values for unset capabilities. */ 818 setdefaults(); 819 } 820