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