| 1 | /* Interfaces to system-dependent kernel and library entries. |
| 2 | Copyright (C) 1985, 86, 87, 88, 93, 94 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | |
| 21 | #include <signal.h> |
| 22 | #include <setjmp.h> |
| 23 | |
| 24 | #include <config.h> |
| 25 | #include "lisp.h" |
| 26 | #include "blockinput.h" |
| 27 | #undef NULL |
| 28 | |
| 29 | #define min(x,y) ((x) > (y) ? (y) : (x)) |
| 30 | |
| 31 | /* In this file, open, read and write refer to the system calls, |
| 32 | not our sugared interfaces sys_open, sys_read and sys_write. |
| 33 | Contrariwise, for systems where we use the system calls directly, |
| 34 | define sys_read, etc. here as aliases for them. */ |
| 35 | #ifndef read |
| 36 | #define sys_read read |
| 37 | #define sys_write write |
| 38 | #endif /* `read' is not a macro */ |
| 39 | |
| 40 | #undef read |
| 41 | #undef write |
| 42 | |
| 43 | #ifndef close |
| 44 | #define sys_close close |
| 45 | #else |
| 46 | #undef close |
| 47 | #endif |
| 48 | |
| 49 | #ifndef open |
| 50 | #define sys_open open |
| 51 | #else /* `open' is a macro */ |
| 52 | #undef open |
| 53 | #endif /* `open' is a macro */ |
| 54 | |
| 55 | /* Does anyone other than VMS need this? */ |
| 56 | #ifndef fwrite |
| 57 | #define sys_fwrite fwrite |
| 58 | #else |
| 59 | #undef fwrite |
| 60 | #endif |
| 61 | |
| 62 | #include <stdio.h> |
| 63 | #include <sys/types.h> |
| 64 | #include <sys/stat.h> |
| 65 | #include <errno.h> |
| 66 | |
| 67 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
| 68 | #include <dos.h> |
| 69 | #include "dosfns.h" |
| 70 | #include "msdos.h" |
| 71 | #include <sys/param.h> |
| 72 | #endif |
| 73 | |
| 74 | extern int errno; |
| 75 | |
| 76 | #ifdef VMS |
| 77 | #include <rms.h> |
| 78 | #include <ttdef.h> |
| 79 | #include <tt2def.h> |
| 80 | #include <iodef.h> |
| 81 | #include <ssdef.h> |
| 82 | #include <descrip.h> |
| 83 | #include <fibdef.h> |
| 84 | #include <atrdef.h> |
| 85 | #include <ctype.h> |
| 86 | #include <string.h> |
| 87 | #ifdef __GNUC__ |
| 88 | #include <sys/file.h> |
| 89 | #else |
| 90 | #include <file.h> |
| 91 | #endif |
| 92 | #undef F_SETFL |
| 93 | #ifndef RAB$C_BID |
| 94 | #include <rab.h> |
| 95 | #endif |
| 96 | #define MAXIOSIZE ( 32 * PAGESIZE ) /* Don't I/O more than 32 blocks at a time */ |
| 97 | #endif /* VMS */ |
| 98 | |
| 99 | #ifndef BSD4_1 |
| 100 | #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG) |
| 101 | because the vms compiler doesn't grok `defined' */ |
| 102 | #include <fcntl.h> |
| 103 | #endif |
| 104 | #ifdef USG |
| 105 | #ifndef USG5 |
| 106 | #include <fcntl.h> |
| 107 | #endif |
| 108 | #endif |
| 109 | #endif /* not 4.1 bsd */ |
| 110 | |
| 111 | #ifdef BROKEN_FASYNC |
| 112 | /* On some systems (DGUX comes to mind real fast) FASYNC causes |
| 113 | background writes to the terminal to stop all processes in the |
| 114 | process group when invoked under the csh (and probably any shell |
| 115 | with job control). This stops Emacs dead in its tracks when coming |
| 116 | up under X11. */ |
| 117 | #undef FASYNC |
| 118 | #endif |
| 119 | |
| 120 | #ifndef MSDOS |
| 121 | #include <sys/ioctl.h> |
| 122 | #endif |
| 123 | #include "systty.h" |
| 124 | #include "syswait.h" |
| 125 | |
| 126 | #ifdef BROKEN_TIOCGWINSZ |
| 127 | #undef TIOCGWINSZ |
| 128 | #endif |
| 129 | |
| 130 | #ifdef USG |
| 131 | #include <sys/utsname.h> |
| 132 | #include <string.h> |
| 133 | #ifndef MEMORY_IN_STRING_H |
| 134 | #include <memory.h> |
| 135 | #endif |
| 136 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
| 137 | #ifdef NEED_SIOCTL |
| 138 | #include <sys/sioctl.h> |
| 139 | #endif |
| 140 | #ifdef NEED_PTEM_H |
| 141 | #include <sys/stream.h> |
| 142 | #include <sys/ptem.h> |
| 143 | #endif |
| 144 | #endif /* TIOCGWINSZ or ISC4_0 */ |
| 145 | #endif /* USG */ |
| 146 | |
| 147 | extern int quit_char; |
| 148 | |
| 149 | #include "frame.h" |
| 150 | #include "window.h" |
| 151 | #include "termhooks.h" |
| 152 | #include "termchar.h" |
| 153 | #include "termopts.h" |
| 154 | #include "dispextern.h" |
| 155 | #include "process.h" |
| 156 | |
| 157 | #ifdef NONSYSTEM_DIR_LIBRARY |
| 158 | #include "ndir.h" |
| 159 | #endif /* NONSYSTEM_DIR_LIBRARY */ |
| 160 | |
| 161 | #include "syssignal.h" |
| 162 | #include "systime.h" |
| 163 | |
| 164 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
| 165 | #ifndef LPASS8 |
| 166 | #define LPASS8 0 |
| 167 | #endif |
| 168 | |
| 169 | #ifdef BSD4_1 |
| 170 | #define LNOFLSH 0100000 |
| 171 | #endif |
| 172 | |
| 173 | static int baud_convert[] = |
| 174 | #ifdef BAUD_CONVERT |
| 175 | BAUD_CONVERT; |
| 176 | #else |
| 177 | { |
| 178 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, |
| 179 | 1800, 2400, 4800, 9600, 19200, 38400 |
| 180 | }; |
| 181 | #endif |
| 182 | |
| 183 | extern short ospeed; |
| 184 | |
| 185 | /* The file descriptor for Emacs's input terminal. |
| 186 | Under Unix, this is normaly zero except when using X; |
| 187 | under VMS, we place the input channel number here. |
| 188 | This allows us to write more code that works for both VMS and Unix. */ |
| 189 | static int input_fd; |
| 190 | \f |
| 191 | /* Specify a different file descriptor for further input operations. */ |
| 192 | |
| 193 | void |
| 194 | change_input_fd (fd) |
| 195 | int fd; |
| 196 | { |
| 197 | input_fd = fd; |
| 198 | } |
| 199 | |
| 200 | /* Discard pending input on descriptor input_fd. */ |
| 201 | |
| 202 | discard_tty_input () |
| 203 | { |
| 204 | struct emacs_tty buf; |
| 205 | |
| 206 | if (noninteractive) |
| 207 | return; |
| 208 | |
| 209 | /* Discarding input is not safe when the input could contain |
| 210 | replies from the X server. So don't do it. */ |
| 211 | if (read_socket_hook) |
| 212 | return; |
| 213 | |
| 214 | #ifdef VMS |
| 215 | end_kbd_input (); |
| 216 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
| 217 | &buf.main, 0, 0, terminator_mask, 0, 0); |
| 218 | queue_kbd_input (); |
| 219 | #else /* not VMS */ |
| 220 | #ifdef APOLLO |
| 221 | { |
| 222 | int zero = 0; |
| 223 | ioctl (input_fd, TIOCFLUSH, &zero); |
| 224 | } |
| 225 | #else /* not Apollo */ |
| 226 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
| 227 | while (dos_keyread () != -1) |
| 228 | ; |
| 229 | #else /* not MSDOS */ |
| 230 | EMACS_GET_TTY (input_fd, &buf); |
| 231 | EMACS_SET_TTY (input_fd, &buf, 0); |
| 232 | #endif /* not MSDOS */ |
| 233 | #endif /* not Apollo */ |
| 234 | #endif /* not VMS */ |
| 235 | } |
| 236 | |
| 237 | #ifdef SIGTSTP |
| 238 | |
| 239 | /* Arrange for character C to be read as the next input from |
| 240 | the terminal. */ |
| 241 | |
| 242 | stuff_char (c) |
| 243 | char c; |
| 244 | { |
| 245 | /* Should perhaps error if in batch mode */ |
| 246 | #ifdef TIOCSTI |
| 247 | ioctl (input_fd, TIOCSTI, &c); |
| 248 | #else /* no TIOCSTI */ |
| 249 | error ("Cannot stuff terminal input characters in this version of Unix"); |
| 250 | #endif /* no TIOCSTI */ |
| 251 | } |
| 252 | |
| 253 | #endif /* SIGTSTP */ |
| 254 | \f |
| 255 | init_baud_rate () |
| 256 | { |
| 257 | if (noninteractive) |
| 258 | ospeed = 0; |
| 259 | else |
| 260 | { |
| 261 | #ifdef MSDOS |
| 262 | ospeed = 15; |
| 263 | #else |
| 264 | #ifdef VMS |
| 265 | struct sensemode sg; |
| 266 | |
| 267 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, |
| 268 | &sg.class, 12, 0, 0, 0, 0 ); |
| 269 | ospeed = sg.xmit_baud; |
| 270 | #else /* not VMS */ |
| 271 | #ifdef HAVE_TERMIOS |
| 272 | struct termios sg; |
| 273 | |
| 274 | sg.c_cflag = B9600; |
| 275 | tcgetattr (input_fd, &sg); |
| 276 | ospeed = cfgetospeed (&sg); |
| 277 | #else /* neither VMS nor TERMIOS */ |
| 278 | #ifdef HAVE_TERMIO |
| 279 | struct termio sg; |
| 280 | |
| 281 | sg.c_cflag = B9600; |
| 282 | #ifdef HAVE_TCATTR |
| 283 | tcgetattr (input_fd, &sg); |
| 284 | #else |
| 285 | ioctl (input_fd, TCGETA, &sg); |
| 286 | #endif |
| 287 | ospeed = sg.c_cflag & CBAUD; |
| 288 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
| 289 | struct sgttyb sg; |
| 290 | |
| 291 | sg.sg_ospeed = B9600; |
| 292 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
| 293 | abort (); |
| 294 | ospeed = sg.sg_ospeed; |
| 295 | #endif /* not HAVE_TERMIO */ |
| 296 | #endif /* not HAVE_TERMIOS */ |
| 297 | #endif /* not VMS */ |
| 298 | #endif /* not MSDOS */ |
| 299 | } |
| 300 | |
| 301 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] |
| 302 | ? baud_convert[ospeed] : 9600); |
| 303 | if (baud_rate == 0) |
| 304 | baud_rate = 1200; |
| 305 | } |
| 306 | |
| 307 | /*ARGSUSED*/ |
| 308 | set_exclusive_use (fd) |
| 309 | int fd; |
| 310 | { |
| 311 | #ifdef FIOCLEX |
| 312 | ioctl (fd, FIOCLEX, 0); |
| 313 | #endif |
| 314 | /* Ok to do nothing if this feature does not exist */ |
| 315 | } |
| 316 | \f |
| 317 | #ifndef subprocesses |
| 318 | |
| 319 | wait_without_blocking () |
| 320 | { |
| 321 | #ifdef BSD |
| 322 | wait3 (0, WNOHANG | WUNTRACED, 0); |
| 323 | #else |
| 324 | croak ("wait_without_blocking"); |
| 325 | #endif |
| 326 | synch_process_alive = 0; |
| 327 | } |
| 328 | |
| 329 | #endif /* not subprocesses */ |
| 330 | |
| 331 | int wait_debugging; /* Set nonzero to make following function work under dbx |
| 332 | (at least for bsd). */ |
| 333 | |
| 334 | SIGTYPE |
| 335 | wait_for_termination_signal () |
| 336 | {} |
| 337 | |
| 338 | /* Wait for subprocess with process id `pid' to terminate and |
| 339 | make sure it will get eliminated (not remain forever as a zombie) */ |
| 340 | |
| 341 | wait_for_termination (pid) |
| 342 | int pid; |
| 343 | { |
| 344 | while (1) |
| 345 | { |
| 346 | #ifdef subprocesses |
| 347 | #ifdef VMS |
| 348 | int status; |
| 349 | |
| 350 | status = SYS$FORCEX (&pid, 0, 0); |
| 351 | break; |
| 352 | #else /* not VMS */ |
| 353 | #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5)) |
| 354 | /* Note that kill returns -1 even if the process is just a zombie now. |
| 355 | But inevitably a SIGCHLD interrupt should be generated |
| 356 | and child_sig will do wait3 and make the process go away. */ |
| 357 | /* There is some indication that there is a bug involved with |
| 358 | termination of subprocesses, perhaps involving a kernel bug too, |
| 359 | but no idea what it is. Just as a hunch we signal SIGCHLD to see |
| 360 | if that causes the problem to go away or get worse. */ |
| 361 | sigsetmask (sigmask (SIGCHLD)); |
| 362 | if (0 > kill (pid, 0)) |
| 363 | { |
| 364 | sigsetmask (SIGEMPTYMASK); |
| 365 | kill (getpid (), SIGCHLD); |
| 366 | break; |
| 367 | } |
| 368 | if (wait_debugging) |
| 369 | sleep (1); |
| 370 | else |
| 371 | sigpause (SIGEMPTYMASK); |
| 372 | #else /* not BSD, and not HPUX version >= 6 */ |
| 373 | #if defined (UNIPLUS) |
| 374 | if (0 > kill (pid, 0)) |
| 375 | break; |
| 376 | wait (0); |
| 377 | #else /* neither BSD nor UNIPLUS: random sysV */ |
| 378 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
| 379 | sigblock (sigmask (SIGCHLD)); |
| 380 | if (0 > kill (pid, 0)) |
| 381 | { |
| 382 | sigunblock (sigmask (SIGCHLD)); |
| 383 | break; |
| 384 | } |
| 385 | sigpause (SIGEMPTYMASK); |
| 386 | #else /* not POSIX_SIGNALS */ |
| 387 | #ifdef HAVE_SYSV_SIGPAUSE |
| 388 | sighold (SIGCHLD); |
| 389 | if (0 > kill (pid, 0)) |
| 390 | { |
| 391 | sigrelse (SIGCHLD); |
| 392 | break; |
| 393 | } |
| 394 | sigpause (SIGCHLD); |
| 395 | #else /* not HAVE_SYSV_SIGPAUSE */ |
| 396 | if (0 > kill (pid, 0)) |
| 397 | break; |
| 398 | /* Using sleep instead of pause avoids timing error. |
| 399 | If the inferior dies just before the sleep, |
| 400 | we lose just one second. */ |
| 401 | sleep (1); |
| 402 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
| 403 | #endif /* not POSIX_SIGNALS */ |
| 404 | #endif /* not UNIPLUS */ |
| 405 | #endif /* not BSD, and not HPUX version >= 6 */ |
| 406 | #endif /* not VMS */ |
| 407 | #else /* not subprocesses */ |
| 408 | #ifndef BSD4_1 |
| 409 | if (kill (pid, 0) < 0) |
| 410 | break; |
| 411 | wait (0); |
| 412 | #else /* BSD4_1 */ |
| 413 | int status; |
| 414 | status = wait (0); |
| 415 | if (status == pid || status == -1) |
| 416 | break; |
| 417 | #endif /* BSD4_1 */ |
| 418 | #endif /* not subprocesses */ |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | #ifdef subprocesses |
| 423 | |
| 424 | /* |
| 425 | * flush any pending output |
| 426 | * (may flush input as well; it does not matter the way we use it) |
| 427 | */ |
| 428 | |
| 429 | flush_pending_output (channel) |
| 430 | int channel; |
| 431 | { |
| 432 | #ifdef HAVE_TERMIOS |
| 433 | /* If we try this, we get hit with SIGTTIN, because |
| 434 | the child's tty belongs to the child's pgrp. */ |
| 435 | #else |
| 436 | #ifdef TCFLSH |
| 437 | ioctl (channel, TCFLSH, 1); |
| 438 | #else |
| 439 | #ifdef TIOCFLUSH |
| 440 | int zero = 0; |
| 441 | /* 3rd arg should be ignored |
| 442 | but some 4.2 kernels actually want the address of an int |
| 443 | and nonzero means something different. */ |
| 444 | ioctl (channel, TIOCFLUSH, &zero); |
| 445 | #endif |
| 446 | #endif |
| 447 | #endif |
| 448 | } |
| 449 | \f |
| 450 | #ifndef VMS |
| 451 | /* Set up the terminal at the other end of a pseudo-terminal that |
| 452 | we will be controlling an inferior through. |
| 453 | It should not echo or do line-editing, since that is done |
| 454 | in Emacs. No padding needed for insertion into an Emacs buffer. */ |
| 455 | |
| 456 | child_setup_tty (out) |
| 457 | int out; |
| 458 | { |
| 459 | #ifndef MSDOS |
| 460 | struct emacs_tty s; |
| 461 | |
| 462 | EMACS_GET_TTY (out, &s); |
| 463 | |
| 464 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
| 465 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
| 466 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ |
| 467 | #ifdef NLDLY |
| 468 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
| 469 | /* No output delays */ |
| 470 | #endif |
| 471 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
| 472 | s.main.c_lflag |= ISIG; /* Enable signals */ |
| 473 | #ifdef IUCLC |
| 474 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ |
| 475 | #endif |
| 476 | #ifdef OLCUC |
| 477 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
| 478 | #endif |
| 479 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
| 480 | #if 0 |
| 481 | /* Said to be unnecessary: */ |
| 482 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
| 483 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ |
| 484 | #endif |
| 485 | |
| 486 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ |
| 487 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ |
| 488 | s.main.c_cc[VERASE] = 0377; /* disable erase processing */ |
| 489 | s.main.c_cc[VKILL] = 0377; /* disable kill processing */ |
| 490 | |
| 491 | #ifdef HPUX |
| 492 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
| 493 | #endif /* HPUX */ |
| 494 | |
| 495 | #ifdef AIX |
| 496 | /* AIX enhanced edit loses NULs, so disable it */ |
| 497 | #ifndef IBMR2AIX |
| 498 | s.main.c_line = 0; |
| 499 | s.main.c_iflag &= ~ASCEDIT; |
| 500 | #endif |
| 501 | /* Also, PTY overloads NUL and BREAK. |
| 502 | don't ignore break, but don't signal either, so it looks like NUL. */ |
| 503 | s.main.c_iflag &= ~IGNBRK; |
| 504 | s.main.c_iflag &= ~BRKINT; |
| 505 | /* QUIT and INTR work better as signals, so disable character forms */ |
| 506 | s.main.c_cc[VINTR] = 0377; |
| 507 | #ifdef SIGNALS_VIA_CHARACTERS |
| 508 | /* the QUIT and INTR character are used in process_send_signal |
| 509 | so set them here to something useful. */ |
| 510 | if (s.main.c_cc[VQUIT] == 0377) |
| 511 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
| 512 | if (s.main.c_cc[VINTR] == 0377) |
| 513 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
| 514 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
| 515 | /* QUIT and INTR work better as signals, so disable character forms */ |
| 516 | s.main.c_cc[VQUIT] = 0377; |
| 517 | s.main.c_cc[VINTR] = 0377; |
| 518 | s.main.c_lflag &= ~ISIG; |
| 519 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
| 520 | s.main.c_cc[VEOL] = 0377; |
| 521 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
| 522 | #endif /* AIX */ |
| 523 | |
| 524 | #else /* not HAVE_TERMIO */ |
| 525 | |
| 526 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE |
| 527 | | CBREAK | TANDEM); |
| 528 | s.main.sg_flags |= LPASS8; |
| 529 | s.main.sg_erase = 0377; |
| 530 | s.main.sg_kill = 0377; |
| 531 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
| 532 | |
| 533 | #endif /* not HAVE_TERMIO */ |
| 534 | |
| 535 | EMACS_SET_TTY (out, &s, 0); |
| 536 | |
| 537 | #ifdef BSD4_1 |
| 538 | if (interrupt_input) |
| 539 | reset_sigio (); |
| 540 | #endif /* BSD4_1 */ |
| 541 | #ifdef RTU |
| 542 | { |
| 543 | int zero = 0; |
| 544 | ioctl (out, FIOASYNC, &zero); |
| 545 | } |
| 546 | #endif /* RTU */ |
| 547 | #endif /* not MSDOS */ |
| 548 | } |
| 549 | #endif /* not VMS */ |
| 550 | |
| 551 | #endif /* subprocesses */ |
| 552 | |
| 553 | /*ARGSUSED*/ |
| 554 | setpgrp_of_tty (pid) |
| 555 | int pid; |
| 556 | { |
| 557 | EMACS_SET_TTY_PGRP (input_fd, &pid); |
| 558 | } |
| 559 | \f |
| 560 | /* Record a signal code and the handler for it. */ |
| 561 | struct save_signal |
| 562 | { |
| 563 | int code; |
| 564 | SIGTYPE (*handler) (); |
| 565 | }; |
| 566 | |
| 567 | /* Suspend the Emacs process; give terminal to its superior. */ |
| 568 | |
| 569 | sys_suspend () |
| 570 | { |
| 571 | #ifdef VMS |
| 572 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
| 573 | to the current emacs as a cheaper than starting a whole new process. This |
| 574 | is set up by KEPTEDITOR.COM. */ |
| 575 | unsigned long parent_id, foster_parent_id; |
| 576 | char *fpid_string; |
| 577 | |
| 578 | fpid_string = getenv ("EMACS_PARENT_PID"); |
| 579 | if (fpid_string != NULL) |
| 580 | { |
| 581 | sscanf (fpid_string, "%x", &foster_parent_id); |
| 582 | if (foster_parent_id != 0) |
| 583 | parent_id = foster_parent_id; |
| 584 | else |
| 585 | parent_id = getppid (); |
| 586 | } |
| 587 | else |
| 588 | parent_id = getppid (); |
| 589 | |
| 590 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
| 591 | |
| 592 | if (parent_id && parent_id != 0xffffffff) |
| 593 | { |
| 594 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); |
| 595 | int status = LIB$ATTACH (&parent_id) & 1; |
| 596 | signal (SIGINT, oldsig); |
| 597 | return status; |
| 598 | } |
| 599 | else |
| 600 | { |
| 601 | struct { |
| 602 | int l; |
| 603 | char *a; |
| 604 | } d_prompt; |
| 605 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ |
| 606 | d_prompt.a = "Emacs: "; /* Just a reminder */ |
| 607 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
| 608 | return 1; |
| 609 | } |
| 610 | return -1; |
| 611 | #else |
| 612 | #if defined(SIGTSTP) && !defined(MSDOS) |
| 613 | |
| 614 | { |
| 615 | int pgrp = EMACS_GETPGRP (0); |
| 616 | EMACS_KILLPG (pgrp, SIGTSTP); |
| 617 | } |
| 618 | |
| 619 | #else /* No SIGTSTP */ |
| 620 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ |
| 621 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ |
| 622 | kill (getpid (), SIGQUIT); |
| 623 | |
| 624 | #else /* No SIGTSTP or USG_JOBCTRL */ |
| 625 | |
| 626 | /* On a system where suspending is not implemented, |
| 627 | instead fork a subshell and let it talk directly to the terminal |
| 628 | while we wait. */ |
| 629 | sys_subshell (); |
| 630 | |
| 631 | #endif /* no USG_JOBCTRL */ |
| 632 | #endif /* no SIGTSTP */ |
| 633 | #endif /* not VMS */ |
| 634 | } |
| 635 | |
| 636 | /* Fork a subshell. */ |
| 637 | |
| 638 | sys_subshell () |
| 639 | { |
| 640 | #ifndef VMS |
| 641 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
| 642 | int st; |
| 643 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ |
| 644 | #endif |
| 645 | int pid = fork (); |
| 646 | struct save_signal saved_handlers[5]; |
| 647 | |
| 648 | saved_handlers[0].code = SIGINT; |
| 649 | saved_handlers[1].code = SIGQUIT; |
| 650 | saved_handlers[2].code = SIGTERM; |
| 651 | #ifdef SIGIO |
| 652 | saved_handlers[3].code = SIGIO; |
| 653 | saved_handlers[4].code = 0; |
| 654 | #else |
| 655 | saved_handlers[3].code = 0; |
| 656 | #endif |
| 657 | |
| 658 | if (pid == -1) |
| 659 | error ("Can't spawn subshell"); |
| 660 | if (pid == 0) |
| 661 | { |
| 662 | char *sh; |
| 663 | |
| 664 | #ifdef MSDOS /* MW, Aug 1993 */ |
| 665 | getwd (oldwd); |
| 666 | #endif |
| 667 | sh = (char *) egetenv ("SHELL"); |
| 668 | if (sh == 0) |
| 669 | sh = "sh"; |
| 670 | |
| 671 | /* Use our buffer's default directory for the subshell. */ |
| 672 | { |
| 673 | Lisp_Object dir; |
| 674 | unsigned char *str; |
| 675 | int len; |
| 676 | |
| 677 | /* mentioning current_buffer->buffer would mean including buffer.h, |
| 678 | which somehow wedges the hp compiler. So instead... */ |
| 679 | |
| 680 | dir = intern ("default-directory"); |
| 681 | /* Can't use NILP */ |
| 682 | if (XFASTINT (Fboundp (dir)) == XFASTINT (Qnil)) |
| 683 | goto xyzzy; |
| 684 | dir = Fsymbol_value (dir); |
| 685 | if (XTYPE (dir) != Lisp_String) |
| 686 | goto xyzzy; |
| 687 | |
| 688 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); |
| 689 | len = XSTRING (dir)->size; |
| 690 | bcopy (XSTRING (dir)->data, str, len); |
| 691 | if (str[len - 1] != '/') str[len++] = '/'; |
| 692 | str[len] = 0; |
| 693 | chdir (str); |
| 694 | } |
| 695 | xyzzy: |
| 696 | #ifdef subprocesses |
| 697 | close_process_descs (); /* Close Emacs's pipes/ptys */ |
| 698 | #endif |
| 699 | |
| 700 | #ifdef PRIO_PROCESS |
| 701 | { |
| 702 | extern int emacs_priority; |
| 703 | |
| 704 | if (emacs_priority) |
| 705 | nice (-emacs_priority); |
| 706 | } |
| 707 | #endif |
| 708 | |
| 709 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
| 710 | st = system (sh); |
| 711 | chdir (oldwd); |
| 712 | if (st) |
| 713 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
| 714 | #else /* not MSDOS */ |
| 715 | execlp (sh, sh, 0); |
| 716 | write (1, "Can't execute subshell", 22); |
| 717 | _exit (1); |
| 718 | #endif /* not MSDOS */ |
| 719 | } |
| 720 | |
| 721 | save_signal_handlers (saved_handlers); |
| 722 | synch_process_alive = 1; |
| 723 | wait_for_termination (pid); |
| 724 | restore_signal_handlers (saved_handlers); |
| 725 | #endif /* !VMS */ |
| 726 | } |
| 727 | |
| 728 | save_signal_handlers (saved_handlers) |
| 729 | struct save_signal *saved_handlers; |
| 730 | { |
| 731 | while (saved_handlers->code) |
| 732 | { |
| 733 | saved_handlers->handler |
| 734 | = (SIGTYPE (*) ()) signal (saved_handlers->code, SIG_IGN); |
| 735 | saved_handlers++; |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | restore_signal_handlers (saved_handlers) |
| 740 | struct save_signal *saved_handlers; |
| 741 | { |
| 742 | while (saved_handlers->code) |
| 743 | { |
| 744 | signal (saved_handlers->code, saved_handlers->handler); |
| 745 | saved_handlers++; |
| 746 | } |
| 747 | } |
| 748 | \f |
| 749 | #ifdef F_SETFL |
| 750 | |
| 751 | int old_fcntl_flags; |
| 752 | |
| 753 | init_sigio () |
| 754 | { |
| 755 | #ifdef FASYNC |
| 756 | old_fcntl_flags = fcntl (input_fd, F_GETFL, 0) & ~FASYNC; |
| 757 | #endif |
| 758 | request_sigio (); |
| 759 | } |
| 760 | |
| 761 | reset_sigio () |
| 762 | { |
| 763 | unrequest_sigio (); |
| 764 | } |
| 765 | |
| 766 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
| 767 | |
| 768 | request_sigio () |
| 769 | { |
| 770 | #ifdef SIGWINCH |
| 771 | sigunblock (sigmask (SIGWINCH)); |
| 772 | #endif |
| 773 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
| 774 | |
| 775 | interrupts_deferred = 0; |
| 776 | } |
| 777 | |
| 778 | unrequest_sigio () |
| 779 | { |
| 780 | #ifdef SIGWINCH |
| 781 | sigblock (sigmask (SIGWINCH)); |
| 782 | #endif |
| 783 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
| 784 | interrupts_deferred = 1; |
| 785 | } |
| 786 | |
| 787 | #else /* no FASYNC */ |
| 788 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ |
| 789 | |
| 790 | request_sigio () |
| 791 | { |
| 792 | int on = 1; |
| 793 | ioctl (input_fd, FIOASYNC, &on); |
| 794 | interrupts_deferred = 0; |
| 795 | } |
| 796 | |
| 797 | unrequest_sigio () |
| 798 | { |
| 799 | int off = 0; |
| 800 | |
| 801 | ioctl (input_fd, FIOASYNC, &off); |
| 802 | interrupts_deferred = 1; |
| 803 | } |
| 804 | |
| 805 | #else /* not FASYNC, not STRIDE */ |
| 806 | |
| 807 | #ifdef _CX_UX |
| 808 | |
| 809 | #include <termios.h> |
| 810 | |
| 811 | request_sigio () |
| 812 | { |
| 813 | int on = 1; |
| 814 | sigset_t st; |
| 815 | |
| 816 | sigemptyset(&st); |
| 817 | sigaddset(&st, SIGIO); |
| 818 | ioctl (input_fd, FIOASYNC, &on); |
| 819 | interrupts_deferred = 0; |
| 820 | sigprocmask(SIG_UNBLOCK, &st, (sigset_t *)0); |
| 821 | } |
| 822 | |
| 823 | unrequest_sigio () |
| 824 | { |
| 825 | int off = 0; |
| 826 | |
| 827 | ioctl (input_fd, FIOASYNC, &off); |
| 828 | interrupts_deferred = 1; |
| 829 | } |
| 830 | |
| 831 | #else /* ! _CX_UX */ |
| 832 | |
| 833 | request_sigio () |
| 834 | { |
| 835 | croak ("request_sigio"); |
| 836 | } |
| 837 | |
| 838 | unrequest_sigio () |
| 839 | { |
| 840 | croak ("unrequest_sigio"); |
| 841 | } |
| 842 | |
| 843 | #endif /* _CX_UX */ |
| 844 | #endif /* STRIDE */ |
| 845 | #endif /* FASYNC */ |
| 846 | #endif /* F_SETFL */ |
| 847 | \f |
| 848 | /* Saving and restoring the process group of Emacs's terminal. */ |
| 849 | |
| 850 | #ifdef BSD_PGRPS |
| 851 | |
| 852 | /* The process group of which Emacs was a member when it initially |
| 853 | started. |
| 854 | |
| 855 | If Emacs was in its own process group (i.e. inherited_pgroup == |
| 856 | getpid ()), then we know we're running under a shell with job |
| 857 | control (Emacs would never be run as part of a pipeline). |
| 858 | Everything is fine. |
| 859 | |
| 860 | If Emacs was not in its own process group, then we know we're |
| 861 | running under a shell (or a caller) that doesn't know how to |
| 862 | separate itself from Emacs (like sh). Emacs must be in its own |
| 863 | process group in order to receive SIGIO correctly. In this |
| 864 | situation, we put ourselves in our own pgroup, forcibly set the |
| 865 | tty's pgroup to our pgroup, and make sure to restore and reinstate |
| 866 | the tty's pgroup just like any other terminal setting. If |
| 867 | inherited_group was not the tty's pgroup, then we'll get a |
| 868 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if |
| 869 | it goes foreground in the future, which is what should happen. */ |
| 870 | int inherited_pgroup; |
| 871 | |
| 872 | /* Split off the foreground process group to Emacs alone. |
| 873 | When we are in the foreground, but not started in our own process |
| 874 | group, redirect the TTY to point to our own process group. We need |
| 875 | to be in our own process group to receive SIGIO properly. */ |
| 876 | narrow_foreground_group () |
| 877 | { |
| 878 | int me = getpid (); |
| 879 | |
| 880 | setpgrp (0, inherited_pgroup); |
| 881 | if (inherited_pgroup != me) |
| 882 | EMACS_SET_TTY_PGRP (input_fd, &me); |
| 883 | setpgrp (0, me); |
| 884 | } |
| 885 | |
| 886 | /* Set the tty to our original foreground group. */ |
| 887 | widen_foreground_group () |
| 888 | { |
| 889 | if (inherited_pgroup != getpid ()) |
| 890 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
| 891 | setpgrp (0, inherited_pgroup); |
| 892 | } |
| 893 | |
| 894 | #endif /* BSD_PGRPS */ |
| 895 | \f |
| 896 | /* Getting and setting emacs_tty structures. */ |
| 897 | |
| 898 | /* Set *TC to the parameters associated with the terminal FD. |
| 899 | Return zero if all's well, or -1 if we ran into an error we |
| 900 | couldn't deal with. */ |
| 901 | int |
| 902 | emacs_get_tty (fd, settings) |
| 903 | int fd; |
| 904 | struct emacs_tty *settings; |
| 905 | { |
| 906 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ |
| 907 | #ifdef HAVE_TCATTR |
| 908 | /* We have those nifty POSIX tcmumbleattr functions. */ |
| 909 | if (tcgetattr (fd, &settings->main) < 0) |
| 910 | return -1; |
| 911 | |
| 912 | #else |
| 913 | #ifdef HAVE_TERMIO |
| 914 | /* The SYSV-style interface? */ |
| 915 | if (ioctl (fd, TCGETA, &settings->main) < 0) |
| 916 | return -1; |
| 917 | |
| 918 | #else |
| 919 | #ifdef VMS |
| 920 | /* Vehemently Monstrous System? :-) */ |
| 921 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, |
| 922 | &settings->main.class, 12, 0, 0, 0, 0) |
| 923 | & 1)) |
| 924 | return -1; |
| 925 | |
| 926 | #else |
| 927 | #ifndef MSDOS |
| 928 | /* I give up - I hope you have the BSD ioctls. */ |
| 929 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) |
| 930 | return -1; |
| 931 | #endif /* not MSDOS */ |
| 932 | #endif |
| 933 | #endif |
| 934 | #endif |
| 935 | |
| 936 | /* Suivant - Do we have to get struct ltchars data? */ |
| 937 | #ifdef HAVE_LTCHARS |
| 938 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
| 939 | return -1; |
| 940 | #endif |
| 941 | |
| 942 | /* How about a struct tchars and a wordful of lmode bits? */ |
| 943 | #ifdef HAVE_TCHARS |
| 944 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
| 945 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) |
| 946 | return -1; |
| 947 | #endif |
| 948 | |
| 949 | /* We have survived the tempest. */ |
| 950 | return 0; |
| 951 | } |
| 952 | |
| 953 | |
| 954 | /* Set the parameters of the tty on FD according to the contents of |
| 955 | *SETTINGS. If WAITP is non-zero, we wait for all queued output to |
| 956 | be written before making the change; otherwise, we forget any |
| 957 | queued input and make the change immediately. |
| 958 | Return 0 if all went well, and -1 if anything failed. */ |
| 959 | int |
| 960 | emacs_set_tty (fd, settings, waitp) |
| 961 | int fd; |
| 962 | struct emacs_tty *settings; |
| 963 | int waitp; |
| 964 | { |
| 965 | /* Set the primary parameters - baud rate, character size, etcetera. */ |
| 966 | #ifdef HAVE_TCATTR |
| 967 | int i; |
| 968 | /* We have those nifty POSIX tcmumbleattr functions. |
| 969 | William J. Smith <wjs@wiis.wang.com> writes: |
| 970 | "POSIX 1003.1 defines tcsetattr() to return success if it was |
| 971 | able to perform any of the requested actions, even if some |
| 972 | of the requested actions could not be performed. |
| 973 | We must read settings back to ensure tty setup properly. |
| 974 | AIX requires this to keep tty from hanging occasionally." */ |
| 975 | /* This make sure that we don't loop indefinitely in here. */ |
| 976 | for (i = 0 ; i < 10 ; i++) |
| 977 | if (tcsetattr (fd, waitp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
| 978 | { |
| 979 | if (errno == EINTR) |
| 980 | continue; |
| 981 | else |
| 982 | return -1; |
| 983 | } |
| 984 | else |
| 985 | { |
| 986 | struct termios new; |
| 987 | |
| 988 | /* Get the current settings, and see if they're what we asked for. */ |
| 989 | tcgetattr (fd, &new); |
| 990 | /* We cannot use memcmp on the whole structure here because under |
| 991 | * aix386 the termios structure has some reserved field that may |
| 992 | * not be filled in. |
| 993 | */ |
| 994 | if ( new.c_iflag == settings->main.c_iflag |
| 995 | && new.c_oflag == settings->main.c_oflag |
| 996 | && new.c_cflag == settings->main.c_cflag |
| 997 | && new.c_lflag == settings->main.c_lflag |
| 998 | && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0) |
| 999 | break; |
| 1000 | else |
| 1001 | continue; |
| 1002 | } |
| 1003 | |
| 1004 | #else |
| 1005 | #ifdef HAVE_TERMIO |
| 1006 | /* The SYSV-style interface? */ |
| 1007 | if (ioctl (fd, waitp ? TCSETAW : TCSETAF, &settings->main) < 0) |
| 1008 | return -1; |
| 1009 | |
| 1010 | #else |
| 1011 | #ifdef VMS |
| 1012 | /* Vehemently Monstrous System? :-) */ |
| 1013 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, |
| 1014 | &settings->main.class, 12, 0, 0, 0, 0) |
| 1015 | & 1)) |
| 1016 | return -1; |
| 1017 | |
| 1018 | #else |
| 1019 | #ifndef MSDOS |
| 1020 | /* I give up - I hope you have the BSD ioctls. */ |
| 1021 | if (ioctl (fd, (waitp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
| 1022 | return -1; |
| 1023 | #endif /* not MSDOS */ |
| 1024 | |
| 1025 | #endif |
| 1026 | #endif |
| 1027 | #endif |
| 1028 | |
| 1029 | /* Suivant - Do we have to get struct ltchars data? */ |
| 1030 | #ifdef HAVE_LTCHARS |
| 1031 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
| 1032 | return -1; |
| 1033 | #endif |
| 1034 | |
| 1035 | /* How about a struct tchars and a wordful of lmode bits? */ |
| 1036 | #ifdef HAVE_TCHARS |
| 1037 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
| 1038 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) |
| 1039 | return -1; |
| 1040 | #endif |
| 1041 | |
| 1042 | /* We have survived the tempest. */ |
| 1043 | return 0; |
| 1044 | } |
| 1045 | |
| 1046 | \f |
| 1047 | /* The initial tty mode bits */ |
| 1048 | struct emacs_tty old_tty; |
| 1049 | |
| 1050 | int term_initted; /* 1 if outer tty status has been recorded */ |
| 1051 | |
| 1052 | #ifdef BSD4_1 |
| 1053 | /* BSD 4.1 needs to keep track of the lmode bits in order to start |
| 1054 | sigio. */ |
| 1055 | int lmode; |
| 1056 | #endif |
| 1057 | |
| 1058 | #ifndef F_SETOWN_BUG |
| 1059 | #ifdef F_SETOWN |
| 1060 | int old_fcntl_owner; |
| 1061 | #endif /* F_SETOWN */ |
| 1062 | #endif /* F_SETOWN_BUG */ |
| 1063 | |
| 1064 | /* This may also be defined in stdio, |
| 1065 | but if so, this does no harm, |
| 1066 | and using the same name avoids wasting the other one's space. */ |
| 1067 | |
| 1068 | #if defined (USG) || defined (DGUX) |
| 1069 | unsigned char _sobuf[BUFSIZ+8]; |
| 1070 | #else |
| 1071 | char _sobuf[BUFSIZ]; |
| 1072 | #endif |
| 1073 | |
| 1074 | #ifdef HAVE_LTCHARS |
| 1075 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
| 1076 | #endif |
| 1077 | #ifdef HAVE_TCHARS |
| 1078 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
| 1079 | #endif |
| 1080 | |
| 1081 | init_sys_modes () |
| 1082 | { |
| 1083 | struct emacs_tty tty; |
| 1084 | |
| 1085 | #ifdef VMS |
| 1086 | #if 0 |
| 1087 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ |
| 1088 | extern int (*interrupt_signal) (); |
| 1089 | #endif |
| 1090 | #endif |
| 1091 | |
| 1092 | if (noninteractive) |
| 1093 | return; |
| 1094 | |
| 1095 | #ifdef VMS |
| 1096 | if (!input_ef) |
| 1097 | input_ef = get_kbd_event_flag (); |
| 1098 | /* LIB$GET_EF (&input_ef); */ |
| 1099 | SYS$CLREF (input_ef); |
| 1100 | waiting_for_ast = 0; |
| 1101 | if (!timer_ef) |
| 1102 | timer_ef = get_timer_event_flag (); |
| 1103 | /* LIB$GET_EF (&timer_ef); */ |
| 1104 | SYS$CLREF (timer_ef); |
| 1105 | #if 0 |
| 1106 | if (!process_ef) |
| 1107 | { |
| 1108 | LIB$GET_EF (&process_ef); |
| 1109 | SYS$CLREF (process_ef); |
| 1110 | } |
| 1111 | if (input_ef / 32 != process_ef / 32) |
| 1112 | croak ("Input and process event flags in different clusters."); |
| 1113 | #endif |
| 1114 | if (input_ef / 32 != timer_ef / 32) |
| 1115 | croak ("Input and timer event flags in different clusters."); |
| 1116 | #if 0 |
| 1117 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
| 1118 | ((unsigned) 1 << (process_ef % 32)); |
| 1119 | #endif |
| 1120 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
| 1121 | ((unsigned) 1 << (timer_ef % 32)); |
| 1122 | #ifndef VMS4_4 |
| 1123 | sys_access_reinit (); |
| 1124 | #endif |
| 1125 | #endif /* not VMS */ |
| 1126 | |
| 1127 | #ifdef BSD_PGRPS |
| 1128 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
| 1129 | narrow_foreground_group (); |
| 1130 | #endif |
| 1131 | |
| 1132 | EMACS_GET_TTY (input_fd, &old_tty); |
| 1133 | |
| 1134 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
| 1135 | { |
| 1136 | tty = old_tty; |
| 1137 | |
| 1138 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
| 1139 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
| 1140 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ |
| 1141 | #ifdef ISTRIP |
| 1142 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
| 1143 | #endif |
| 1144 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
| 1145 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ |
| 1146 | #ifdef IEXTEN |
| 1147 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
| 1148 | #endif |
| 1149 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
| 1150 | if (flow_control) |
| 1151 | { |
| 1152 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
| 1153 | #ifdef IXANY |
| 1154 | tty.main.c_iflag &= ~IXANY; |
| 1155 | #endif /* IXANY */ |
| 1156 | } |
| 1157 | else |
| 1158 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
| 1159 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL |
| 1160 | on output */ |
| 1161 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
| 1162 | #ifdef CS8 |
| 1163 | if (meta_key) |
| 1164 | { |
| 1165 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
| 1166 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ |
| 1167 | } |
| 1168 | #endif |
| 1169 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
| 1170 | /* Set up C-g for both SIGQUIT and SIGINT. |
| 1171 | We don't know which we will get, but we handle both alike |
| 1172 | so which one it really gives us does not matter. */ |
| 1173 | tty.main.c_cc[VQUIT] = quit_char; |
| 1174 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ |
| 1175 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ |
| 1176 | #ifdef VSWTCH |
| 1177 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
| 1178 | of C-z */ |
| 1179 | #endif /* VSWTCH */ |
| 1180 | #if defined (mips) || defined (HAVE_TCATTR) |
| 1181 | #ifdef VSUSP |
| 1182 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
| 1183 | #endif /* VSUSP */ |
| 1184 | #ifdef V_DSUSP |
| 1185 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
| 1186 | #endif /* V_DSUSP */ |
| 1187 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
| 1188 | tty.main.c_cc[VDSUSP] = CDISABLE; |
| 1189 | #endif /* VDSUSP */ |
| 1190 | #ifdef VLNEXT |
| 1191 | tty.main.c_cc[VLNEXT] = CDISABLE; |
| 1192 | #endif /* VLNEXT */ |
| 1193 | #ifdef VREPRINT |
| 1194 | tty.main.c_cc[VREPRINT] = CDISABLE; |
| 1195 | #endif /* VREPRINT */ |
| 1196 | #ifdef VWERASE |
| 1197 | tty.main.c_cc[VWERASE] = CDISABLE; |
| 1198 | #endif /* VWERASE */ |
| 1199 | #ifdef VDISCARD |
| 1200 | tty.main.c_cc[VDISCARD] = CDISABLE; |
| 1201 | #endif /* VDISCARD */ |
| 1202 | #endif /* mips or HAVE_TCATTR */ |
| 1203 | #ifdef AIX |
| 1204 | #ifndef IBMR2AIX |
| 1205 | /* AIX enhanced edit loses NULs, so disable it */ |
| 1206 | tty.main.c_line = 0; |
| 1207 | tty.main.c_iflag &= ~ASCEDIT; |
| 1208 | #else |
| 1209 | tty.main.c_cc[VSTRT] = 255; |
| 1210 | tty.main.c_cc[VSTOP] = 255; |
| 1211 | tty.main.c_cc[VSUSP] = 255; |
| 1212 | tty.main.c_cc[VDSUSP] = 255; |
| 1213 | #endif /* IBMR2AIX */ |
| 1214 | /* Also, PTY overloads NUL and BREAK. |
| 1215 | don't ignore break, but don't signal either, so it looks like NUL. |
| 1216 | This really serves a purpose only if running in an XTERM window |
| 1217 | or via TELNET or the like, but does no harm elsewhere. */ |
| 1218 | tty.main.c_iflag &= ~IGNBRK; |
| 1219 | tty.main.c_iflag &= ~BRKINT; |
| 1220 | #endif |
| 1221 | #else /* if not HAVE_TERMIO */ |
| 1222 | #ifdef VMS |
| 1223 | tty.main.tt_char |= TT$M_NOECHO; |
| 1224 | if (meta_key) |
| 1225 | tty.main.tt_char |= TT$M_EIGHTBIT; |
| 1226 | if (flow_control) |
| 1227 | tty.main.tt_char |= TT$M_TTSYNC; |
| 1228 | else |
| 1229 | tty.main.tt_char &= ~TT$M_TTSYNC; |
| 1230 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; |
| 1231 | #else /* not VMS (BSD, that is) */ |
| 1232 | #ifndef MSDOS |
| 1233 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
| 1234 | if (meta_key) |
| 1235 | tty.main.sg_flags |= ANYP; |
| 1236 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; |
| 1237 | #endif |
| 1238 | #endif /* not VMS (BSD, that is) */ |
| 1239 | #endif /* not HAVE_TERMIO */ |
| 1240 | |
| 1241 | /* If going to use CBREAK mode, we must request C-g to interrupt |
| 1242 | and turn off start and stop chars, etc. If not going to use |
| 1243 | CBREAK mode, do this anyway so as to turn off local flow |
| 1244 | control for user coming over network on 4.2; in this case, |
| 1245 | only t_stopc and t_startc really matter. */ |
| 1246 | #ifndef HAVE_TERMIO |
| 1247 | #ifdef HAVE_TCHARS |
| 1248 | /* Note: if not using CBREAK mode, it makes no difference how we |
| 1249 | set this */ |
| 1250 | tty.tchars = new_tchars; |
| 1251 | tty.tchars.t_intrc = quit_char; |
| 1252 | if (flow_control) |
| 1253 | { |
| 1254 | tty.tchars.t_startc = '\021'; |
| 1255 | tty.tchars.t_stopc = '\023'; |
| 1256 | } |
| 1257 | |
| 1258 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
| 1259 | #ifdef ultrix |
| 1260 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt |
| 1261 | anything, and leaving it in breaks the meta key. Go figure. */ |
| 1262 | tty.lmode &= ~LLITOUT; |
| 1263 | #endif |
| 1264 | |
| 1265 | #ifdef BSD4_1 |
| 1266 | lmode = tty.lmode; |
| 1267 | #endif |
| 1268 | |
| 1269 | #endif /* HAVE_TCHARS */ |
| 1270 | #endif /* not HAVE_TERMIO */ |
| 1271 | |
| 1272 | #ifdef HAVE_LTCHARS |
| 1273 | tty.ltchars = new_ltchars; |
| 1274 | #endif /* HAVE_LTCHARS */ |
| 1275 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
| 1276 | internal_terminal_init (); |
| 1277 | dos_ttraw (); |
| 1278 | #endif |
| 1279 | |
| 1280 | EMACS_SET_TTY (input_fd, &tty, 0); |
| 1281 | |
| 1282 | /* This code added to insure that, if flow-control is not to be used, |
| 1283 | we have an unlocked terminal at the start. */ |
| 1284 | |
| 1285 | #ifdef TCXONC |
| 1286 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
| 1287 | #endif |
| 1288 | #ifndef APOLLO |
| 1289 | #ifdef TIOCSTART |
| 1290 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
| 1291 | #endif |
| 1292 | #endif |
| 1293 | |
| 1294 | #ifdef AIX |
| 1295 | hft_init (); |
| 1296 | #ifdef IBMR2AIX |
| 1297 | { |
| 1298 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it |
| 1299 | to be only LF. This is the way that is done. */ |
| 1300 | struct termio tty; |
| 1301 | |
| 1302 | if (ioctl (1, HFTGETID, &tty) != -1) |
| 1303 | write (1, "\033[20l", 5); |
| 1304 | } |
| 1305 | #endif |
| 1306 | #endif |
| 1307 | |
| 1308 | #ifdef VMS |
| 1309 | /* Appears to do nothing when in PASTHRU mode. |
| 1310 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
| 1311 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
| 1312 | */ |
| 1313 | queue_kbd_input (0); |
| 1314 | #endif /* VMS */ |
| 1315 | } |
| 1316 | |
| 1317 | #ifdef F_SETFL |
| 1318 | #ifndef F_SETOWN_BUG |
| 1319 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
| 1320 | if (interrupt_input) |
| 1321 | { |
| 1322 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
| 1323 | fcntl (input_fd, F_SETOWN, getpid ()); |
| 1324 | init_sigio (); |
| 1325 | } |
| 1326 | #endif /* F_GETOWN */ |
| 1327 | #endif /* F_SETOWN_BUG */ |
| 1328 | #endif /* F_SETFL */ |
| 1329 | |
| 1330 | #ifdef BSD4_1 |
| 1331 | if (interrupt_input) |
| 1332 | init_sigio (); |
| 1333 | #endif |
| 1334 | |
| 1335 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ |
| 1336 | #undef _IOFBF |
| 1337 | #endif |
| 1338 | #ifdef _IOFBF |
| 1339 | /* This symbol is defined on recent USG systems. |
| 1340 | Someone says without this call USG won't really buffer the file |
| 1341 | even with a call to setbuf. */ |
| 1342 | setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf); |
| 1343 | #else |
| 1344 | setbuf (stdout, _sobuf); |
| 1345 | #endif |
| 1346 | set_terminal_modes (); |
| 1347 | if (term_initted && no_redraw_on_reenter) |
| 1348 | { |
| 1349 | if (display_completed) |
| 1350 | direct_output_forward_char (0); |
| 1351 | } |
| 1352 | else |
| 1353 | { |
| 1354 | frame_garbaged = 1; |
| 1355 | #ifdef MULTI_FRAME |
| 1356 | if (FRAMEP (Vterminal_frame)) |
| 1357 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; |
| 1358 | #endif |
| 1359 | } |
| 1360 | |
| 1361 | term_initted = 1; |
| 1362 | } |
| 1363 | |
| 1364 | /* Return nonzero if safe to use tabs in output. |
| 1365 | At the time this is called, init_sys_modes has not been done yet. */ |
| 1366 | |
| 1367 | tabs_safe_p () |
| 1368 | { |
| 1369 | struct emacs_tty tty; |
| 1370 | |
| 1371 | EMACS_GET_TTY (input_fd, &tty); |
| 1372 | return EMACS_TTY_TABS_OK (&tty); |
| 1373 | } |
| 1374 | \f |
| 1375 | /* Get terminal size from system. |
| 1376 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
| 1377 | We store 0 if there's no valid information. */ |
| 1378 | |
| 1379 | get_frame_size (widthp, heightp) |
| 1380 | int *widthp, *heightp; |
| 1381 | { |
| 1382 | |
| 1383 | #ifdef TIOCGWINSZ |
| 1384 | |
| 1385 | /* BSD-style. */ |
| 1386 | struct winsize size; |
| 1387 | |
| 1388 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) |
| 1389 | *widthp = *heightp = 0; |
| 1390 | else |
| 1391 | { |
| 1392 | *widthp = size.ws_col; |
| 1393 | *heightp = size.ws_row; |
| 1394 | } |
| 1395 | |
| 1396 | #else |
| 1397 | #ifdef TIOCGSIZE |
| 1398 | |
| 1399 | /* SunOS - style. */ |
| 1400 | struct ttysize size; |
| 1401 | |
| 1402 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) |
| 1403 | *widthp = *heightp = 0; |
| 1404 | else |
| 1405 | { |
| 1406 | *widthp = size.ts_cols; |
| 1407 | *heightp = size.ts_lines; |
| 1408 | } |
| 1409 | |
| 1410 | #else |
| 1411 | #ifdef VMS |
| 1412 | |
| 1413 | struct sensemode tty; |
| 1414 | |
| 1415 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, |
| 1416 | &tty.class, 12, 0, 0, 0, 0); |
| 1417 | *widthp = tty.scr_wid; |
| 1418 | *heightp = tty.scr_len; |
| 1419 | |
| 1420 | #else |
| 1421 | #ifdef MSDOS |
| 1422 | *widthp = ScreenCols (); |
| 1423 | *heightp = ScreenRows (); |
| 1424 | #else /* system doesn't know size */ |
| 1425 | *widthp = 0; |
| 1426 | *heightp = 0; |
| 1427 | #endif |
| 1428 | |
| 1429 | #endif /* not VMS */ |
| 1430 | #endif /* not SunOS-style */ |
| 1431 | #endif /* not BSD-style */ |
| 1432 | } |
| 1433 | |
| 1434 | /* Set the logical window size associated with descriptor FD |
| 1435 | to HEIGHT and WIDTH. This is used mainly with ptys. */ |
| 1436 | |
| 1437 | int |
| 1438 | set_window_size (fd, height, width) |
| 1439 | int fd, height, width; |
| 1440 | { |
| 1441 | #ifdef TIOCSWINSZ |
| 1442 | |
| 1443 | /* BSD-style. */ |
| 1444 | struct winsize size; |
| 1445 | size.ws_row = height; |
| 1446 | size.ws_col = width; |
| 1447 | |
| 1448 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) |
| 1449 | return 0; /* error */ |
| 1450 | else |
| 1451 | return 1; |
| 1452 | |
| 1453 | #else |
| 1454 | #ifdef TIOCSSIZE |
| 1455 | |
| 1456 | /* SunOS - style. */ |
| 1457 | struct ttysize size; |
| 1458 | size.ts_lines = height; |
| 1459 | size.ts_cols = width; |
| 1460 | |
| 1461 | if (ioctl (fd, TIOCGSIZE, &size) == -1) |
| 1462 | return 0; |
| 1463 | else |
| 1464 | return 1; |
| 1465 | #else |
| 1466 | return -1; |
| 1467 | #endif /* not SunOS-style */ |
| 1468 | #endif /* not BSD-style */ |
| 1469 | } |
| 1470 | |
| 1471 | \f |
| 1472 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
| 1473 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
| 1474 | reset_sys_modes () |
| 1475 | { |
| 1476 | if (noninteractive) |
| 1477 | { |
| 1478 | fflush (stdout); |
| 1479 | return; |
| 1480 | } |
| 1481 | if (!term_initted) |
| 1482 | return; |
| 1483 | if (read_socket_hook || !EQ (Vwindow_system, Qnil)) |
| 1484 | return; |
| 1485 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
| 1486 | clear_end_of_line (FRAME_WIDTH (selected_frame)); |
| 1487 | /* clear_end_of_line may move the cursor */ |
| 1488 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
| 1489 | #ifdef IBMR2AIX |
| 1490 | { |
| 1491 | /* HFT devices normally use ^J as a LF/CR. We forced it to |
| 1492 | do the LF only. Now, we need to reset it. */ |
| 1493 | struct termio tty; |
| 1494 | |
| 1495 | if (ioctl (1, HFTGETID, &tty) != -1) |
| 1496 | write (1, "\033[20h", 5); |
| 1497 | } |
| 1498 | #endif |
| 1499 | |
| 1500 | reset_terminal_modes (); |
| 1501 | fflush (stdout); |
| 1502 | #ifdef BSD |
| 1503 | #ifndef BSD4_1 |
| 1504 | /* Avoid possible loss of output when changing terminal modes. */ |
| 1505 | fsync (fileno (stdout)); |
| 1506 | #endif |
| 1507 | #endif |
| 1508 | |
| 1509 | #ifdef F_SETFL |
| 1510 | #ifndef F_SETOWN_BUG |
| 1511 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
| 1512 | if (interrupt_input) |
| 1513 | { |
| 1514 | reset_sigio (); |
| 1515 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
| 1516 | } |
| 1517 | #endif /* F_SETOWN */ |
| 1518 | #endif /* F_SETOWN_BUG */ |
| 1519 | #ifdef O_NDELAY |
| 1520 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); |
| 1521 | #endif |
| 1522 | #endif /* F_SETFL */ |
| 1523 | #ifdef BSD4_1 |
| 1524 | if (interrupt_input) |
| 1525 | reset_sigio (); |
| 1526 | #endif /* BSD4_1 */ |
| 1527 | |
| 1528 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) |
| 1529 | ; |
| 1530 | |
| 1531 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
| 1532 | dos_ttcooked (); |
| 1533 | #endif |
| 1534 | |
| 1535 | #ifdef AIX |
| 1536 | hft_reset (); |
| 1537 | #endif |
| 1538 | |
| 1539 | #ifdef BSD_PGRPS |
| 1540 | widen_foreground_group (); |
| 1541 | #endif |
| 1542 | } |
| 1543 | \f |
| 1544 | #ifdef HAVE_PTYS |
| 1545 | |
| 1546 | /* Set up the proper status flags for use of a pty. */ |
| 1547 | |
| 1548 | setup_pty (fd) |
| 1549 | int fd; |
| 1550 | { |
| 1551 | /* I'm told that TOICREMOTE does not mean control chars |
| 1552 | "can't be sent" but rather that they don't have |
| 1553 | input-editing or signaling effects. |
| 1554 | That should be good, because we have other ways |
| 1555 | to do those things in Emacs. |
| 1556 | However, telnet mode seems not to work on 4.2. |
| 1557 | So TIOCREMOTE is turned off now. */ |
| 1558 | |
| 1559 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls |
| 1560 | will hang. In particular, the "timeout" feature (which |
| 1561 | causes a read to return if there is no data available) |
| 1562 | does this. Also it is known that telnet mode will hang |
| 1563 | in such a way that Emacs must be stopped (perhaps this |
| 1564 | is the same problem). |
| 1565 | |
| 1566 | If TIOCREMOTE is turned off, then there is a bug in |
| 1567 | hp-ux which sometimes loses data. Apparently the |
| 1568 | code which blocks the master process when the internal |
| 1569 | buffer fills up does not work. Other than this, |
| 1570 | though, everything else seems to work fine. |
| 1571 | |
| 1572 | Since the latter lossage is more benign, we may as well |
| 1573 | lose that way. -- cph */ |
| 1574 | #ifdef FIONBIO |
| 1575 | #ifdef SYSV_PTYS |
| 1576 | { |
| 1577 | int on = 1; |
| 1578 | ioctl (fd, FIONBIO, &on); |
| 1579 | } |
| 1580 | #endif |
| 1581 | #endif |
| 1582 | #ifdef IBMRTAIX |
| 1583 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ |
| 1584 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ |
| 1585 | /* cause EMACS not to die when it should, i.e., when its own controlling */ |
| 1586 | /* tty goes away. I've complained to the AIX developers, and they may */ |
| 1587 | /* change this behavior, but I'm not going to hold my breath. */ |
| 1588 | signal (SIGHUP, SIG_IGN); |
| 1589 | #endif |
| 1590 | } |
| 1591 | #endif /* HAVE_PTYS */ |
| 1592 | \f |
| 1593 | #ifdef VMS |
| 1594 | |
| 1595 | /* Assigning an input channel is done at the start of Emacs execution. |
| 1596 | This is called each time Emacs is resumed, also, but does nothing |
| 1597 | because input_chain is no longer zero. */ |
| 1598 | |
| 1599 | init_vms_input () |
| 1600 | { |
| 1601 | int status; |
| 1602 | |
| 1603 | if (input_fd == 0) |
| 1604 | { |
| 1605 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
| 1606 | if (! (status & 1)) |
| 1607 | LIB$STOP (status); |
| 1608 | } |
| 1609 | } |
| 1610 | |
| 1611 | /* Deassigning the input channel is done before exiting. */ |
| 1612 | |
| 1613 | stop_vms_input () |
| 1614 | { |
| 1615 | return SYS$DASSGN (input_fd); |
| 1616 | } |
| 1617 | |
| 1618 | short input_buffer; |
| 1619 | |
| 1620 | /* Request reading one character into the keyboard buffer. |
| 1621 | This is done as soon as the buffer becomes empty. */ |
| 1622 | |
| 1623 | queue_kbd_input () |
| 1624 | { |
| 1625 | int status; |
| 1626 | extern kbd_input_ast (); |
| 1627 | |
| 1628 | waiting_for_ast = 0; |
| 1629 | stop_input = 0; |
| 1630 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
| 1631 | &input_iosb, kbd_input_ast, 1, |
| 1632 | &input_buffer, 1, 0, terminator_mask, 0, 0); |
| 1633 | } |
| 1634 | |
| 1635 | int input_count; |
| 1636 | |
| 1637 | /* Ast routine that is called when keyboard input comes in |
| 1638 | in accord with the SYS$QIO above. */ |
| 1639 | |
| 1640 | kbd_input_ast () |
| 1641 | { |
| 1642 | register int c = -1; |
| 1643 | int old_errno = errno; |
| 1644 | extern EMACS_TIME *input_available_clear_time; |
| 1645 | |
| 1646 | if (waiting_for_ast) |
| 1647 | SYS$SETEF (input_ef); |
| 1648 | waiting_for_ast = 0; |
| 1649 | input_count++; |
| 1650 | #ifdef ASTDEBUG |
| 1651 | if (input_count == 25) |
| 1652 | exit (1); |
| 1653 | printf ("Ast # %d,", input_count); |
| 1654 | printf (" iosb = %x, %x, %x, %x", |
| 1655 | input_iosb.offset, input_iosb.status, input_iosb.termlen, |
| 1656 | input_iosb.term); |
| 1657 | #endif |
| 1658 | if (input_iosb.offset) |
| 1659 | { |
| 1660 | c = input_buffer; |
| 1661 | #ifdef ASTDEBUG |
| 1662 | printf (", char = 0%o", c); |
| 1663 | #endif |
| 1664 | } |
| 1665 | #ifdef ASTDEBUG |
| 1666 | printf ("\n"); |
| 1667 | fflush (stdout); |
| 1668 | sleep (1); |
| 1669 | #endif |
| 1670 | if (! stop_input) |
| 1671 | queue_kbd_input (); |
| 1672 | if (c >= 0) |
| 1673 | { |
| 1674 | struct input_event e; |
| 1675 | e.kind = ascii_keystroke; |
| 1676 | XSET (e.code, Lisp_Int, c); |
| 1677 | #ifdef MULTI_FRAME |
| 1678 | XSET(e.frame_or_window, Lisp_Frame, selected_frame); |
| 1679 | #else |
| 1680 | e.frame_or_window = Qnil; |
| 1681 | #endif |
| 1682 | kbd_buffer_store_event (&e); |
| 1683 | } |
| 1684 | if (input_available_clear_time) |
| 1685 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); |
| 1686 | errno = old_errno; |
| 1687 | } |
| 1688 | |
| 1689 | /* Wait until there is something in kbd_buffer. */ |
| 1690 | |
| 1691 | wait_for_kbd_input () |
| 1692 | { |
| 1693 | extern int have_process_input, process_exited; |
| 1694 | |
| 1695 | /* If already something, avoid doing system calls. */ |
| 1696 | if (detect_input_pending ()) |
| 1697 | { |
| 1698 | return; |
| 1699 | } |
| 1700 | /* Clear a flag, and tell ast routine above to set it. */ |
| 1701 | SYS$CLREF (input_ef); |
| 1702 | waiting_for_ast = 1; |
| 1703 | /* Check for timing error: ast happened while we were doing that. */ |
| 1704 | if (!detect_input_pending ()) |
| 1705 | { |
| 1706 | /* No timing error: wait for flag to be set. */ |
| 1707 | set_waiting_for_input (0); |
| 1708 | SYS$WFLOR (input_ef, input_eflist); |
| 1709 | clear_waiting_for_input (0); |
| 1710 | if (!detect_input_pending ()) |
| 1711 | /* Check for subprocess input availability */ |
| 1712 | { |
| 1713 | int dsp = have_process_input || process_exited; |
| 1714 | |
| 1715 | SYS$CLREF (process_ef); |
| 1716 | if (have_process_input) |
| 1717 | process_command_input (); |
| 1718 | if (process_exited) |
| 1719 | process_exit (); |
| 1720 | if (dsp) |
| 1721 | { |
| 1722 | update_mode_lines++; |
| 1723 | prepare_menu_bars (); |
| 1724 | redisplay_preserve_echo_area (); |
| 1725 | } |
| 1726 | } |
| 1727 | } |
| 1728 | waiting_for_ast = 0; |
| 1729 | } |
| 1730 | |
| 1731 | /* Get rid of any pending QIO, when we are about to suspend |
| 1732 | or when we want to throw away pending input. |
| 1733 | We wait for a positive sign that the AST routine has run |
| 1734 | and therefore there is no I/O request queued when we return. |
| 1735 | SYS$SETAST is used to avoid a timing error. */ |
| 1736 | |
| 1737 | end_kbd_input () |
| 1738 | { |
| 1739 | #ifdef ASTDEBUG |
| 1740 | printf ("At end_kbd_input.\n"); |
| 1741 | fflush (stdout); |
| 1742 | sleep (1); |
| 1743 | #endif |
| 1744 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ |
| 1745 | { |
| 1746 | SYS$CANCEL (input_fd); |
| 1747 | return; |
| 1748 | } |
| 1749 | |
| 1750 | SYS$SETAST (0); |
| 1751 | /* Clear a flag, and tell ast routine above to set it. */ |
| 1752 | SYS$CLREF (input_ef); |
| 1753 | waiting_for_ast = 1; |
| 1754 | stop_input = 1; |
| 1755 | SYS$CANCEL (input_fd); |
| 1756 | SYS$SETAST (1); |
| 1757 | SYS$WAITFR (input_ef); |
| 1758 | waiting_for_ast = 0; |
| 1759 | } |
| 1760 | |
| 1761 | /* Wait for either input available or time interval expiry. */ |
| 1762 | |
| 1763 | input_wait_timeout (timeval) |
| 1764 | int timeval; /* Time to wait, in seconds */ |
| 1765 | { |
| 1766 | int time [2]; |
| 1767 | static int zero = 0; |
| 1768 | static int large = -10000000; |
| 1769 | |
| 1770 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ |
| 1771 | |
| 1772 | /* If already something, avoid doing system calls. */ |
| 1773 | if (detect_input_pending ()) |
| 1774 | { |
| 1775 | return; |
| 1776 | } |
| 1777 | /* Clear a flag, and tell ast routine above to set it. */ |
| 1778 | SYS$CLREF (input_ef); |
| 1779 | waiting_for_ast = 1; |
| 1780 | /* Check for timing error: ast happened while we were doing that. */ |
| 1781 | if (!detect_input_pending ()) |
| 1782 | { |
| 1783 | /* No timing error: wait for flag to be set. */ |
| 1784 | SYS$CANTIM (1, 0); |
| 1785 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ |
| 1786 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ |
| 1787 | } |
| 1788 | waiting_for_ast = 0; |
| 1789 | } |
| 1790 | |
| 1791 | /* The standard `sleep' routine works some other way |
| 1792 | and it stops working if you have ever quit out of it. |
| 1793 | This one continues to work. */ |
| 1794 | |
| 1795 | sys_sleep (timeval) |
| 1796 | int timeval; |
| 1797 | { |
| 1798 | int time [2]; |
| 1799 | static int zero = 0; |
| 1800 | static int large = -10000000; |
| 1801 | |
| 1802 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ |
| 1803 | |
| 1804 | SYS$CANTIM (1, 0); |
| 1805 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ |
| 1806 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ |
| 1807 | } |
| 1808 | |
| 1809 | init_sigio () |
| 1810 | { |
| 1811 | request_sigio (); |
| 1812 | } |
| 1813 | |
| 1814 | reset_sigio () |
| 1815 | { |
| 1816 | unrequest_sigio (); |
| 1817 | } |
| 1818 | |
| 1819 | request_sigio () |
| 1820 | { |
| 1821 | croak ("request sigio"); |
| 1822 | } |
| 1823 | |
| 1824 | unrequest_sigio () |
| 1825 | { |
| 1826 | croak ("unrequest sigio"); |
| 1827 | } |
| 1828 | |
| 1829 | #endif /* VMS */ |
| 1830 | \f |
| 1831 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ |
| 1832 | #ifndef CANNOT_DUMP |
| 1833 | #define NEED_STARTS |
| 1834 | #endif |
| 1835 | |
| 1836 | #ifndef SYSTEM_MALLOC |
| 1837 | #ifndef NEED_STARTS |
| 1838 | #define NEED_STARTS |
| 1839 | #endif |
| 1840 | #endif |
| 1841 | |
| 1842 | #ifdef NEED_STARTS |
| 1843 | /* Some systems that cannot dump also cannot implement these. */ |
| 1844 | |
| 1845 | /* |
| 1846 | * Return the address of the start of the text segment prior to |
| 1847 | * doing an unexec. After unexec the return value is undefined. |
| 1848 | * See crt0.c for further explanation and _start. |
| 1849 | * |
| 1850 | */ |
| 1851 | |
| 1852 | #if !defined (CANNOT_UNEXEC) && !defined (HAVE_TEXT_START) |
| 1853 | char * |
| 1854 | start_of_text () |
| 1855 | { |
| 1856 | #ifdef TEXT_START |
| 1857 | return ((char *) TEXT_START); |
| 1858 | #else |
| 1859 | #ifdef GOULD |
| 1860 | extern csrt (); |
| 1861 | return ((char *) csrt); |
| 1862 | #else /* not GOULD */ |
| 1863 | extern int _start (); |
| 1864 | return ((char *) _start); |
| 1865 | #endif /* GOULD */ |
| 1866 | #endif /* TEXT_START */ |
| 1867 | } |
| 1868 | #endif /* not CANNOT_UNEXEC and not HAVE_TEXT_START */ |
| 1869 | |
| 1870 | /* |
| 1871 | * Return the address of the start of the data segment prior to |
| 1872 | * doing an unexec. After unexec the return value is undefined. |
| 1873 | * See crt0.c for further information and definition of data_start. |
| 1874 | * |
| 1875 | * Apparently, on BSD systems this is etext at startup. On |
| 1876 | * USG systems (swapping) this is highly mmu dependent and |
| 1877 | * is also dependent on whether or not the program is running |
| 1878 | * with shared text. Generally there is a (possibly large) |
| 1879 | * gap between end of text and start of data with shared text. |
| 1880 | * |
| 1881 | * On Uniplus+ systems with shared text, data starts at a |
| 1882 | * fixed address. Each port (from a given oem) is generally |
| 1883 | * different, and the specific value of the start of data can |
| 1884 | * be obtained via the UniPlus+ specific "uvar" system call, |
| 1885 | * however the method outlined in crt0.c seems to be more portable. |
| 1886 | * |
| 1887 | * Probably what will have to happen when a USG unexec is available, |
| 1888 | * at least on UniPlus, is temacs will have to be made unshared so |
| 1889 | * that text and data are contiguous. Then once loadup is complete, |
| 1890 | * unexec will produce a shared executable where the data can be |
| 1891 | * at the normal shared text boundry and the startofdata variable |
| 1892 | * will be patched by unexec to the correct value. |
| 1893 | * |
| 1894 | */ |
| 1895 | |
| 1896 | char * |
| 1897 | start_of_data () |
| 1898 | { |
| 1899 | #ifdef DATA_START |
| 1900 | return ((char *) DATA_START); |
| 1901 | #else |
| 1902 | #ifdef ORDINARY_LINK |
| 1903 | /* |
| 1904 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, |
| 1905 | * data_start isn't defined. We take the address of environ, which |
| 1906 | * is known to live at or near the start of the system crt0.c, and |
| 1907 | * we don't sweat the handful of bytes that might lose. |
| 1908 | */ |
| 1909 | extern char **environ; |
| 1910 | |
| 1911 | return((char *) &environ); |
| 1912 | #else |
| 1913 | extern int data_start; |
| 1914 | return ((char *) &data_start); |
| 1915 | #endif /* ORDINARY_LINK */ |
| 1916 | #endif /* DATA_START */ |
| 1917 | } |
| 1918 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ |
| 1919 | |
| 1920 | #ifndef CANNOT_DUMP |
| 1921 | /* Some systems that cannot dump also cannot implement these. */ |
| 1922 | |
| 1923 | /* |
| 1924 | * Return the address of the end of the text segment prior to |
| 1925 | * doing an unexec. After unexec the return value is undefined. |
| 1926 | */ |
| 1927 | |
| 1928 | char * |
| 1929 | end_of_text () |
| 1930 | { |
| 1931 | #ifdef TEXT_END |
| 1932 | return ((char *) TEXT_END); |
| 1933 | #else |
| 1934 | extern int etext; |
| 1935 | return ((char *) &etext); |
| 1936 | #endif |
| 1937 | } |
| 1938 | |
| 1939 | /* |
| 1940 | * Return the address of the end of the data segment prior to |
| 1941 | * doing an unexec. After unexec the return value is undefined. |
| 1942 | */ |
| 1943 | |
| 1944 | char * |
| 1945 | end_of_data () |
| 1946 | { |
| 1947 | #ifdef DATA_END |
| 1948 | return ((char *) DATA_END); |
| 1949 | #else |
| 1950 | extern int edata; |
| 1951 | return ((char *) &edata); |
| 1952 | #endif |
| 1953 | } |
| 1954 | |
| 1955 | #endif /* not CANNOT_DUMP */ |
| 1956 | \f |
| 1957 | /* get_system_name returns as its value |
| 1958 | a string for the Lisp function system-name to return. */ |
| 1959 | |
| 1960 | #ifdef BSD4_1 |
| 1961 | #include <whoami.h> |
| 1962 | #endif |
| 1963 | |
| 1964 | /* Can't have this within the function since `static' is #defined to |
| 1965 | nothing for some USG systems. */ |
| 1966 | static char *get_system_name_cache; |
| 1967 | static int get_system_name_predump_p; |
| 1968 | |
| 1969 | #ifndef BSD4_1 |
| 1970 | #ifndef VMS |
| 1971 | #ifdef HAVE_SOCKETS |
| 1972 | #include <sys/socket.h> |
| 1973 | #include <netdb.h> |
| 1974 | #endif /* HAVE_SOCKETS */ |
| 1975 | #endif /* not VMS */ |
| 1976 | #endif /* not BSD4_1 */ |
| 1977 | |
| 1978 | char * |
| 1979 | get_system_name () |
| 1980 | { |
| 1981 | #ifdef BSD4_1 |
| 1982 | return sysname; |
| 1983 | #else |
| 1984 | #ifndef CANNOT_DUMP |
| 1985 | /* If the cached value is from before the dump, and we've dumped |
| 1986 | since then, then the cached value is no good. */ |
| 1987 | if (get_system_name_predump_p && initialized && get_system_name_cache) |
| 1988 | { |
| 1989 | xfree (get_system_name_cache); |
| 1990 | get_system_name_cache = 0; |
| 1991 | } |
| 1992 | #endif |
| 1993 | if (!get_system_name_cache) |
| 1994 | { |
| 1995 | /* No cached value, so get the name from the system. */ |
| 1996 | #ifdef VMS |
| 1997 | char *sp; |
| 1998 | if ((sp = egetenv ("SYS$NODE")) == 0) |
| 1999 | sp = "vax-vms"; |
| 2000 | else |
| 2001 | { |
| 2002 | char *end; |
| 2003 | |
| 2004 | if ((end = index (sp, ':')) != 0) |
| 2005 | *end = '\0'; |
| 2006 | } |
| 2007 | get_system_name_cache = (char *) xmalloc (strlen (sp) + 1); |
| 2008 | strcpy (get_system_name_cache, sp); |
| 2009 | #else |
| 2010 | #ifndef HAVE_GETHOSTNAME |
| 2011 | struct utsname uts; |
| 2012 | uname (&uts); |
| 2013 | get_system_name_cache = (char *) xmalloc (strlen (uts.nodename) + 1); |
| 2014 | strcpy (get_system_name_cache, uts.nodename); |
| 2015 | #else /* HAVE_GETHOSTNAME */ |
| 2016 | { |
| 2017 | int hostname_size = 256; |
| 2018 | char *hostname = (char *) xmalloc (hostname_size); |
| 2019 | |
| 2020 | /* Try to get the host name; if the buffer is too short, try |
| 2021 | again. Apparently, the only indication gethostname gives of |
| 2022 | whether the buffer was large enough is the presence or absence |
| 2023 | of a '\0' in the string. Eech. */ |
| 2024 | for (;;) |
| 2025 | { |
| 2026 | gethostname (hostname, hostname_size - 1); |
| 2027 | hostname[hostname_size - 1] = '\0'; |
| 2028 | |
| 2029 | /* Was the buffer large enough for the '\0'? */ |
| 2030 | if (strlen (hostname) < hostname_size - 1) |
| 2031 | break; |
| 2032 | |
| 2033 | hostname_size <<= 1; |
| 2034 | hostname = (char *) xrealloc (hostname, hostname_size); |
| 2035 | } |
| 2036 | get_system_name_cache = hostname; |
| 2037 | #ifdef HAVE_SOCKETS |
| 2038 | /* Turn the hostname into the official, fully-qualified hostname. |
| 2039 | Don't do this if we're going to dump; this can confuse system |
| 2040 | libraries on some machines and make the dumped emacs core dump. */ |
| 2041 | #ifndef CANNOT_DUMP |
| 2042 | if (initialized) |
| 2043 | #endif /* not CANNOT_DUMP */ |
| 2044 | { |
| 2045 | struct hostent *hp = gethostbyname (hostname); |
| 2046 | if (hp) |
| 2047 | { |
| 2048 | char *fqdn = hp->h_name; |
| 2049 | char *p; |
| 2050 | |
| 2051 | if (!index (fqdn, '.')) |
| 2052 | { |
| 2053 | /* We still don't have a fully qualified domain name. |
| 2054 | Try to find one in the list of alternate names */ |
| 2055 | char **alias = hp->h_aliases; |
| 2056 | while (*alias && !index (*alias, '.')) |
| 2057 | alias++; |
| 2058 | if (*alias) |
| 2059 | fqdn = *alias; |
| 2060 | } |
| 2061 | hostname = (char *) xrealloc (hostname, strlen (fqdn) + 1); |
| 2062 | strcpy (hostname, fqdn); |
| 2063 | #if 0 |
| 2064 | /* Convert the host name to lower case. */ |
| 2065 | /* Using ctype.h here would introduce a possible locale |
| 2066 | dependence that is probably wrong for hostnames. */ |
| 2067 | p = hostname |
| 2068 | while (*p) |
| 2069 | { |
| 2070 | if (*p >= 'A' && *p <= 'Z') |
| 2071 | *p += 'a' - 'A'; |
| 2072 | p++; |
| 2073 | } |
| 2074 | #endif |
| 2075 | } |
| 2076 | } |
| 2077 | #endif /* HAVE_SOCKETS */ |
| 2078 | get_system_name_cache = hostname; |
| 2079 | } |
| 2080 | #endif /* HAVE_GETHOSTNAME */ |
| 2081 | #endif /* VMS */ |
| 2082 | #ifndef CANNOT_DUMP |
| 2083 | get_system_name_predump_p = !initialized; |
| 2084 | #endif |
| 2085 | } |
| 2086 | return (get_system_name_cache); |
| 2087 | #endif /* BSD4_1 */ |
| 2088 | } |
| 2089 | \f |
| 2090 | #ifndef VMS |
| 2091 | #ifndef HAVE_SELECT |
| 2092 | |
| 2093 | #ifdef HAVE_X_WINDOWS |
| 2094 | /* Cause explanatory error message at compile time, |
| 2095 | since the select emulation is not good enough for X. */ |
| 2096 | int *x = &x_windows_lose_if_no_select_system_call; |
| 2097 | #endif |
| 2098 | |
| 2099 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs |
| 2100 | * Only checks read descriptors. |
| 2101 | */ |
| 2102 | /* How long to wait between checking fds in select */ |
| 2103 | #define SELECT_PAUSE 1 |
| 2104 | int select_alarmed; |
| 2105 | |
| 2106 | /* For longjmp'ing back to read_input_waiting. */ |
| 2107 | |
| 2108 | jmp_buf read_alarm_throw; |
| 2109 | |
| 2110 | /* Nonzero if the alarm signal should throw back to read_input_waiting. |
| 2111 | The read_socket_hook function sets this to 1 while it is waiting. */ |
| 2112 | |
| 2113 | int read_alarm_should_throw; |
| 2114 | |
| 2115 | SIGTYPE |
| 2116 | select_alarm () |
| 2117 | { |
| 2118 | select_alarmed = 1; |
| 2119 | #ifdef BSD4_1 |
| 2120 | sigrelse (SIGALRM); |
| 2121 | #else /* not BSD4_1 */ |
| 2122 | signal (SIGALRM, SIG_IGN); |
| 2123 | #endif /* not BSD4_1 */ |
| 2124 | if (read_alarm_should_throw) |
| 2125 | longjmp (read_alarm_throw, 1); |
| 2126 | } |
| 2127 | |
| 2128 | /* Only rfds are checked. */ |
| 2129 | int |
| 2130 | select (nfds, rfds, wfds, efds, timeout) |
| 2131 | int nfds; |
| 2132 | int *rfds, *wfds, *efds, *timeout; |
| 2133 | { |
| 2134 | int ravail = 0, orfds = 0, old_alarm; |
| 2135 | int timeoutval = timeout ? *timeout : 100000; |
| 2136 | int *local_timeout = &timeoutval; |
| 2137 | extern int proc_buffered_char[]; |
| 2138 | #ifndef subprocesses |
| 2139 | int process_tick = 0, update_tick = 0; |
| 2140 | #else |
| 2141 | extern int process_tick, update_tick; |
| 2142 | #endif |
| 2143 | SIGTYPE (*old_trap) (); |
| 2144 | unsigned char buf; |
| 2145 | |
| 2146 | if (rfds) |
| 2147 | { |
| 2148 | orfds = *rfds; |
| 2149 | *rfds = 0; |
| 2150 | } |
| 2151 | if (wfds) |
| 2152 | *wfds = 0; |
| 2153 | if (efds) |
| 2154 | *efds = 0; |
| 2155 | |
| 2156 | /* If we are looking only for the terminal, with no timeout, |
| 2157 | just read it and wait -- that's more efficient. */ |
| 2158 | if (orfds == 1 && *local_timeout == 100000 && process_tick == update_tick) |
| 2159 | { |
| 2160 | if (! detect_input_pending ()) |
| 2161 | read_input_waiting (); |
| 2162 | *rfds = 1; |
| 2163 | return 1; |
| 2164 | } |
| 2165 | |
| 2166 | /* Once a second, till the timer expires, check all the flagged read |
| 2167 | * descriptors to see if any input is available. If there is some then |
| 2168 | * set the corresponding bit in the return copy of rfds. |
| 2169 | */ |
| 2170 | while (1) |
| 2171 | { |
| 2172 | register int to_check, bit, fd; |
| 2173 | |
| 2174 | if (rfds) |
| 2175 | { |
| 2176 | for (to_check = nfds, bit = 1, fd = 0; --to_check >= 0; bit <<= 1, fd++) |
| 2177 | { |
| 2178 | if (orfds & bit) |
| 2179 | { |
| 2180 | int avail = 0, status = 0; |
| 2181 | |
| 2182 | if (bit == 1) |
| 2183 | avail = detect_input_pending (); /* Special keyboard handler */ |
| 2184 | else |
| 2185 | { |
| 2186 | #ifdef FIONREAD |
| 2187 | status = ioctl (fd, FIONREAD, &avail); |
| 2188 | #else /* no FIONREAD */ |
| 2189 | #ifdef MSDOS |
| 2190 | abort (); /* I don't think we need it. */ |
| 2191 | #else /* not MSDOS */ |
| 2192 | /* Hoping it will return -1 if nothing available |
| 2193 | or 0 if all 0 chars requested are read. */ |
| 2194 | if (proc_buffered_char[fd] >= 0) |
| 2195 | avail = 1; |
| 2196 | else |
| 2197 | { |
| 2198 | avail = read (fd, &buf, 1); |
| 2199 | if (avail > 0) |
| 2200 | proc_buffered_char[fd] = buf; |
| 2201 | } |
| 2202 | #endif /* not MSDOS */ |
| 2203 | #endif /* no FIONREAD */ |
| 2204 | } |
| 2205 | if (status >= 0 && avail > 0) |
| 2206 | { |
| 2207 | (*rfds) |= bit; |
| 2208 | ravail++; |
| 2209 | } |
| 2210 | } |
| 2211 | } |
| 2212 | } |
| 2213 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) |
| 2214 | break; |
| 2215 | old_alarm = alarm (0); |
| 2216 | old_trap = signal (SIGALRM, select_alarm); |
| 2217 | select_alarmed = 0; |
| 2218 | alarm (SELECT_PAUSE); |
| 2219 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ |
| 2220 | while (select_alarmed == 0 && *local_timeout != 0 |
| 2221 | && process_tick == update_tick) |
| 2222 | { |
| 2223 | #ifdef MSDOS |
| 2224 | sleep_or_kbd_hit (SELECT_PAUSE, (orfds & 1) != 0); |
| 2225 | select_alarm (); |
| 2226 | #else /* not MSDOS */ |
| 2227 | /* If we are interested in terminal input, |
| 2228 | wait by reading the terminal. |
| 2229 | That makes instant wakeup for terminal input at least. */ |
| 2230 | if (orfds & 1) |
| 2231 | { |
| 2232 | read_input_waiting (); |
| 2233 | if (detect_input_pending ()) |
| 2234 | select_alarmed = 1; |
| 2235 | } |
| 2236 | else |
| 2237 | pause (); |
| 2238 | #endif /* not MSDOS */ |
| 2239 | } |
| 2240 | (*local_timeout) -= SELECT_PAUSE; |
| 2241 | /* Reset the old alarm if there was one */ |
| 2242 | alarm (0); |
| 2243 | signal (SIGALRM, old_trap); |
| 2244 | if (old_alarm != 0) |
| 2245 | { |
| 2246 | /* Reset or forge an interrupt for the original handler. */ |
| 2247 | old_alarm -= SELECT_PAUSE; |
| 2248 | if (old_alarm <= 0) |
| 2249 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ |
| 2250 | else |
| 2251 | alarm (old_alarm); |
| 2252 | } |
| 2253 | if (*local_timeout == 0) /* Stop on timer being cleared */ |
| 2254 | break; |
| 2255 | } |
| 2256 | return ravail; |
| 2257 | } |
| 2258 | |
| 2259 | /* Read keyboard input into the standard buffer, |
| 2260 | waiting for at least one character. */ |
| 2261 | |
| 2262 | /* Make all keyboard buffers much bigger when using X windows. */ |
| 2263 | #ifdef HAVE_X_WINDOWS |
| 2264 | #define BUFFER_SIZE_FACTOR 16 |
| 2265 | #else |
| 2266 | #define BUFFER_SIZE_FACTOR 1 |
| 2267 | #endif |
| 2268 | |
| 2269 | read_input_waiting () |
| 2270 | { |
| 2271 | struct input_event e; |
| 2272 | int nread, i; |
| 2273 | extern int quit_char; |
| 2274 | |
| 2275 | if (read_socket_hook) |
| 2276 | { |
| 2277 | struct input_event buf[256]; |
| 2278 | |
| 2279 | read_alarm_should_throw = 0; |
| 2280 | if (! setjmp (read_alarm_throw)) |
| 2281 | nread = (*read_socket_hook) (0, buf, 256, 1, 0); |
| 2282 | else |
| 2283 | nread = -1; |
| 2284 | |
| 2285 | /* Scan the chars for C-g and store them in kbd_buffer. */ |
| 2286 | for (i = 0; i < nread; i++) |
| 2287 | { |
| 2288 | kbd_buffer_store_event (&buf[i]); |
| 2289 | /* Don't look at input that follows a C-g too closely. |
| 2290 | This reduces lossage due to autorepeat on C-g. */ |
| 2291 | if (buf[i].kind == ascii_keystroke |
| 2292 | && XINT(buf[i].code) == quit_char) |
| 2293 | break; |
| 2294 | } |
| 2295 | } |
| 2296 | else |
| 2297 | { |
| 2298 | char buf[3]; |
| 2299 | nread = read (fileno (stdin), buf, 1); |
| 2300 | |
| 2301 | /* Scan the chars for C-g and store them in kbd_buffer. */ |
| 2302 | e.kind = ascii_keystroke; |
| 2303 | e.frame_or_window = selected_frame; |
| 2304 | e.modifiers = 0; |
| 2305 | for (i = 0; i < nread; i++) |
| 2306 | { |
| 2307 | /* Convert chars > 0177 to meta events if desired. |
| 2308 | We do this under the same conditions that read_avail_input does. */ |
| 2309 | if (read_socket_hook == 0) |
| 2310 | { |
| 2311 | /* If the user says she has a meta key, then believe her. */ |
| 2312 | if (meta_key == 1 && (buf[i] & 0x80)) |
| 2313 | e.modifiers = meta_modifier; |
| 2314 | if (meta_key != 2) |
| 2315 | buf[i] &= ~0x80; |
| 2316 | } |
| 2317 | |
| 2318 | XSET (e.code, Lisp_Int, buf[i]); |
| 2319 | kbd_buffer_store_event (&e); |
| 2320 | /* Don't look at input that follows a C-g too closely. |
| 2321 | This reduces lossage due to autorepeat on C-g. */ |
| 2322 | if (buf[i] == quit_char) |
| 2323 | break; |
| 2324 | } |
| 2325 | } |
| 2326 | } |
| 2327 | |
| 2328 | #endif /* not HAVE_SELECT */ |
| 2329 | #endif /* not VMS */ |
| 2330 | \f |
| 2331 | #ifdef BSD4_1 |
| 2332 | /* |
| 2333 | * Partially emulate 4.2 open call. |
| 2334 | * open is defined as this in 4.1. |
| 2335 | * |
| 2336 | * - added by Michael Bloom @ Citicorp/TTI |
| 2337 | * |
| 2338 | */ |
| 2339 | |
| 2340 | int |
| 2341 | sys_open (path, oflag, mode) |
| 2342 | char *path; |
| 2343 | int oflag, mode; |
| 2344 | { |
| 2345 | if (oflag & O_CREAT) |
| 2346 | return creat (path, mode); |
| 2347 | else |
| 2348 | return open (path, oflag); |
| 2349 | } |
| 2350 | |
| 2351 | init_sigio () |
| 2352 | { |
| 2353 | if (noninteractive) |
| 2354 | return; |
| 2355 | lmode = LINTRUP | lmode; |
| 2356 | ioctl (0, TIOCLSET, &lmode); |
| 2357 | } |
| 2358 | |
| 2359 | reset_sigio () |
| 2360 | { |
| 2361 | if (noninteractive) |
| 2362 | return; |
| 2363 | lmode = ~LINTRUP & lmode; |
| 2364 | ioctl (0, TIOCLSET, &lmode); |
| 2365 | } |
| 2366 | |
| 2367 | request_sigio () |
| 2368 | { |
| 2369 | sigrelse (SIGTINT); |
| 2370 | |
| 2371 | interrupts_deferred = 0; |
| 2372 | } |
| 2373 | |
| 2374 | unrequest_sigio () |
| 2375 | { |
| 2376 | sighold (SIGTINT); |
| 2377 | |
| 2378 | interrupts_deferred = 1; |
| 2379 | } |
| 2380 | |
| 2381 | /* still inside #ifdef BSD4_1 */ |
| 2382 | #ifdef subprocesses |
| 2383 | |
| 2384 | int sigheld; /* Mask of held signals */ |
| 2385 | |
| 2386 | sigholdx (signum) |
| 2387 | int signum; |
| 2388 | { |
| 2389 | sigheld |= sigbit (signum); |
| 2390 | sighold (signum); |
| 2391 | } |
| 2392 | |
| 2393 | sigisheld (signum) |
| 2394 | int signum; |
| 2395 | { |
| 2396 | sigheld |= sigbit (signum); |
| 2397 | } |
| 2398 | |
| 2399 | sigunhold (signum) |
| 2400 | int signum; |
| 2401 | { |
| 2402 | sigheld &= ~sigbit (signum); |
| 2403 | sigrelse (signum); |
| 2404 | } |
| 2405 | |
| 2406 | sigfree () /* Free all held signals */ |
| 2407 | { |
| 2408 | int i; |
| 2409 | for (i = 0; i < NSIG; i++) |
| 2410 | if (sigheld & sigbit (i)) |
| 2411 | sigrelse (i); |
| 2412 | sigheld = 0; |
| 2413 | } |
| 2414 | |
| 2415 | sigbit (i) |
| 2416 | { |
| 2417 | return 1 << (i - 1); |
| 2418 | } |
| 2419 | #endif /* subprocesses */ |
| 2420 | #endif /* BSD4_1 */ |
| 2421 | \f |
| 2422 | /* POSIX signals support - DJB */ |
| 2423 | /* Anyone with POSIX signals should have ANSI C declarations */ |
| 2424 | |
| 2425 | #ifdef POSIX_SIGNALS |
| 2426 | |
| 2427 | sigset_t old_mask, empty_mask, full_mask, temp_mask; |
| 2428 | static struct sigaction new_action, old_action; |
| 2429 | |
| 2430 | init_signals () |
| 2431 | { |
| 2432 | sigemptyset (&empty_mask); |
| 2433 | sigfillset (&full_mask); |
| 2434 | } |
| 2435 | |
| 2436 | signal_handler_t |
| 2437 | sys_signal (int signal_number, signal_handler_t action) |
| 2438 | { |
| 2439 | #ifdef DGUX |
| 2440 | /* This gets us restartable system calls for efficiency. |
| 2441 | The "else" code will works as well. */ |
| 2442 | return (berk_signal (signal_number, action)); |
| 2443 | #else |
| 2444 | sigemptyset (&new_action.sa_mask); |
| 2445 | new_action.sa_handler = action; |
| 2446 | #ifdef SA_RESTART |
| 2447 | /* Emacs mostly works better with restartable system services. If this |
| 2448 | * flag exists, we probably want to turn it on here. |
| 2449 | */ |
| 2450 | new_action.sa_flags = SA_RESTART; |
| 2451 | #else |
| 2452 | new_action.sa_flags = 0; |
| 2453 | #endif |
| 2454 | sigaction (signal_number, &new_action, &old_action); |
| 2455 | return (old_action.sa_handler); |
| 2456 | #endif /* DGUX */ |
| 2457 | } |
| 2458 | |
| 2459 | #ifndef __GNUC__ |
| 2460 | /* If we're compiling with GCC, we don't need this function, since it |
| 2461 | can be written as a macro. */ |
| 2462 | sigset_t |
| 2463 | sys_sigmask (int sig) |
| 2464 | { |
| 2465 | sigset_t mask; |
| 2466 | sigemptyset (&mask); |
| 2467 | sigaddset (&mask, sig); |
| 2468 | return mask; |
| 2469 | } |
| 2470 | #endif |
| 2471 | |
| 2472 | int |
| 2473 | sys_sigpause (sigset_t new_mask) |
| 2474 | { |
| 2475 | /* pause emulating berk sigpause... */ |
| 2476 | sigsuspend (&new_mask); |
| 2477 | return (EINTR); |
| 2478 | } |
| 2479 | |
| 2480 | /* I'd like to have these guys return pointers to the mask storage in here, |
| 2481 | but there'd be trouble if the code was saving multiple masks. I'll be |
| 2482 | safe and pass the structure. It normally won't be more than 2 bytes |
| 2483 | anyhow. - DJB */ |
| 2484 | |
| 2485 | sigset_t |
| 2486 | sys_sigblock (sigset_t new_mask) |
| 2487 | { |
| 2488 | sigset_t old_mask; |
| 2489 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); |
| 2490 | return (old_mask); |
| 2491 | } |
| 2492 | |
| 2493 | sigset_t |
| 2494 | sys_sigunblock (sigset_t new_mask) |
| 2495 | { |
| 2496 | sigset_t old_mask; |
| 2497 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); |
| 2498 | return (old_mask); |
| 2499 | } |
| 2500 | |
| 2501 | sigset_t |
| 2502 | sys_sigsetmask (sigset_t new_mask) |
| 2503 | { |
| 2504 | sigset_t old_mask; |
| 2505 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); |
| 2506 | return (old_mask); |
| 2507 | } |
| 2508 | |
| 2509 | #endif /* POSIX_SIGNALS */ |
| 2510 | \f |
| 2511 | #ifndef BSTRING |
| 2512 | |
| 2513 | #ifndef bzero |
| 2514 | |
| 2515 | void |
| 2516 | bzero (b, length) |
| 2517 | register char *b; |
| 2518 | register int length; |
| 2519 | { |
| 2520 | #ifdef VMS |
| 2521 | short zero = 0; |
| 2522 | long max_str = 65535; |
| 2523 | |
| 2524 | while (length > max_str) { |
| 2525 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); |
| 2526 | length -= max_str; |
| 2527 | b += max_str; |
| 2528 | } |
| 2529 | max_str = length; |
| 2530 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); |
| 2531 | #else |
| 2532 | while (length-- > 0) |
| 2533 | *b++ = 0; |
| 2534 | #endif /* not VMS */ |
| 2535 | } |
| 2536 | |
| 2537 | #endif /* no bzero */ |
| 2538 | |
| 2539 | #ifndef bcopy |
| 2540 | /* Saying `void' requires a declaration, above, where bcopy is used |
| 2541 | and that declaration causes pain for systems where bcopy is a macro. */ |
| 2542 | bcopy (b1, b2, length) |
| 2543 | register char *b1; |
| 2544 | register char *b2; |
| 2545 | register int length; |
| 2546 | { |
| 2547 | #ifdef VMS |
| 2548 | long max_str = 65535; |
| 2549 | |
| 2550 | while (length > max_str) { |
| 2551 | (void) LIB$MOVC3 (&max_str, b1, b2); |
| 2552 | length -= max_str; |
| 2553 | b1 += max_str; |
| 2554 | b2 += max_str; |
| 2555 | } |
| 2556 | max_str = length; |
| 2557 | (void) LIB$MOVC3 (&length, b1, b2); |
| 2558 | #else |
| 2559 | while (length-- > 0) |
| 2560 | *b2++ = *b1++; |
| 2561 | #endif /* not VMS */ |
| 2562 | } |
| 2563 | #endif /* no bcopy */ |
| 2564 | |
| 2565 | #ifndef bcmp |
| 2566 | int |
| 2567 | bcmp (b1, b2, length) /* This could be a macro! */ |
| 2568 | register char *b1; |
| 2569 | register char *b2; |
| 2570 | register int length; |
| 2571 | { |
| 2572 | #ifdef VMS |
| 2573 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; |
| 2574 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; |
| 2575 | |
| 2576 | return STR$COMPARE (&src1, &src2); |
| 2577 | #else |
| 2578 | while (length-- > 0) |
| 2579 | if (*b1++ != *b2++) |
| 2580 | return 1; |
| 2581 | |
| 2582 | return 0; |
| 2583 | #endif /* not VMS */ |
| 2584 | } |
| 2585 | #endif /* no bcmp */ |
| 2586 | |
| 2587 | #endif /* not BSTRING */ |
| 2588 | \f |
| 2589 | #ifndef HAVE_RANDOM |
| 2590 | #ifdef USG |
| 2591 | /* |
| 2592 | * The BSD random returns numbers in the range of |
| 2593 | * 0 to 2e31 - 1. The USG rand returns numbers in the |
| 2594 | * range of 0 to 2e15 - 1. This is probably not significant |
| 2595 | * in this usage. |
| 2596 | */ |
| 2597 | |
| 2598 | long |
| 2599 | random () |
| 2600 | { |
| 2601 | /* Arrange to return a range centered on zero. */ |
| 2602 | return (rand () << 15) + rand () - (1 << 29); |
| 2603 | } |
| 2604 | |
| 2605 | srandom (arg) |
| 2606 | int arg; |
| 2607 | { |
| 2608 | srand (arg); |
| 2609 | } |
| 2610 | |
| 2611 | #endif /* USG */ |
| 2612 | |
| 2613 | #ifdef BSD4_1 |
| 2614 | long random () |
| 2615 | { |
| 2616 | /* Arrange to return a range centered on zero. */ |
| 2617 | return (rand () << 15) + rand () - (1 << 29); |
| 2618 | } |
| 2619 | |
| 2620 | srandom (arg) |
| 2621 | int arg; |
| 2622 | { |
| 2623 | srand (arg); |
| 2624 | } |
| 2625 | #endif /* BSD4_1 */ |
| 2626 | #endif |
| 2627 | \f |
| 2628 | #ifdef WRONG_NAME_INSQUE |
| 2629 | |
| 2630 | insque (q,p) |
| 2631 | caddr_t q,p; |
| 2632 | { |
| 2633 | _insque (q,p); |
| 2634 | } |
| 2635 | |
| 2636 | #endif |
| 2637 | \f |
| 2638 | #ifdef VMS |
| 2639 | |
| 2640 | #ifdef getenv |
| 2641 | /* If any place else asks for the TERM variable, |
| 2642 | allow it to be overridden with the EMACS_TERM variable |
| 2643 | before attempting to translate the logical name TERM. As a last |
| 2644 | resort, ask for VAX C's special idea of the TERM variable. */ |
| 2645 | #undef getenv |
| 2646 | char * |
| 2647 | sys_getenv (name) |
| 2648 | char *name; |
| 2649 | { |
| 2650 | register char *val; |
| 2651 | static char buf[256]; |
| 2652 | static struct dsc$descriptor_s equiv |
| 2653 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; |
| 2654 | static struct dsc$descriptor_s d_name |
| 2655 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
| 2656 | short eqlen; |
| 2657 | |
| 2658 | if (!strcmp (name, "TERM")) |
| 2659 | { |
| 2660 | val = (char *) getenv ("EMACS_TERM"); |
| 2661 | if (val) |
| 2662 | return val; |
| 2663 | } |
| 2664 | |
| 2665 | d_name.dsc$w_length = strlen (name); |
| 2666 | d_name.dsc$a_pointer = name; |
| 2667 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
| 2668 | { |
| 2669 | char *str = (char *) xmalloc (eqlen + 1); |
| 2670 | bcopy (buf, str, eqlen); |
| 2671 | str[eqlen] = '\0'; |
| 2672 | /* This is a storage leak, but a pain to fix. With luck, |
| 2673 | no one will ever notice. */ |
| 2674 | return str; |
| 2675 | } |
| 2676 | return (char *) getenv (name); |
| 2677 | } |
| 2678 | #endif /* getenv */ |
| 2679 | |
| 2680 | #ifdef abort |
| 2681 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is |
| 2682 | to force a call on the debugger from within the image. */ |
| 2683 | #undef abort |
| 2684 | sys_abort () |
| 2685 | { |
| 2686 | reset_sys_modes (); |
| 2687 | LIB$SIGNAL (SS$_DEBUG); |
| 2688 | } |
| 2689 | #endif /* abort */ |
| 2690 | #endif /* VMS */ |
| 2691 | \f |
| 2692 | #ifdef VMS |
| 2693 | #ifdef LINK_CRTL_SHARE |
| 2694 | #ifdef SHAREABLE_LIB_BUG |
| 2695 | /* Variables declared noshare and initialized in sharable libraries |
| 2696 | cannot be shared. The VMS linker incorrectly forces you to use a private |
| 2697 | version which is uninitialized... If not for this "feature", we |
| 2698 | could use the C library definition of sys_nerr and sys_errlist. */ |
| 2699 | int sys_nerr = 35; |
| 2700 | char *sys_errlist[] = |
| 2701 | { |
| 2702 | "error 0", |
| 2703 | "not owner", |
| 2704 | "no such file or directory", |
| 2705 | "no such process", |
| 2706 | "interrupted system call", |
| 2707 | "i/o error", |
| 2708 | "no such device or address", |
| 2709 | "argument list too long", |
| 2710 | "exec format error", |
| 2711 | "bad file number", |
| 2712 | "no child process", |
| 2713 | "no more processes", |
| 2714 | "not enough memory", |
| 2715 | "permission denied", |
| 2716 | "bad address", |
| 2717 | "block device required", |
| 2718 | "mount devices busy", |
| 2719 | "file exists", |
| 2720 | "cross-device link", |
| 2721 | "no such device", |
| 2722 | "not a directory", |
| 2723 | "is a directory", |
| 2724 | "invalid argument", |
| 2725 | "file table overflow", |
| 2726 | "too many open files", |
| 2727 | "not a typewriter", |
| 2728 | "text file busy", |
| 2729 | "file too big", |
| 2730 | "no space left on device", |
| 2731 | "illegal seek", |
| 2732 | "read-only file system", |
| 2733 | "too many links", |
| 2734 | "broken pipe", |
| 2735 | "math argument", |
| 2736 | "result too large", |
| 2737 | "I/O stream empty", |
| 2738 | "vax/vms specific error code nontranslatable error" |
| 2739 | }; |
| 2740 | #endif /* SHAREABLE_LIB_BUG */ |
| 2741 | #endif /* LINK_CRTL_SHARE */ |
| 2742 | #endif /* VMS */ |
| 2743 | |
| 2744 | #ifndef HAVE_STRERROR |
| 2745 | char * |
| 2746 | strerror (errnum) |
| 2747 | int errnum; |
| 2748 | { |
| 2749 | extern char *sys_errlist[]; |
| 2750 | extern int sys_nerr; |
| 2751 | |
| 2752 | if (errnum >= 0 && errnum < sys_nerr) |
| 2753 | return sys_errlist[errnum]; |
| 2754 | return (char *) "Unknown error"; |
| 2755 | } |
| 2756 | |
| 2757 | #endif /* ! HAVE_STRERROR */ |
| 2758 | \f |
| 2759 | #ifdef INTERRUPTIBLE_OPEN |
| 2760 | |
| 2761 | int |
| 2762 | /* VARARGS 2 */ |
| 2763 | sys_open (path, oflag, mode) |
| 2764 | char *path; |
| 2765 | int oflag, mode; |
| 2766 | { |
| 2767 | register int rtnval; |
| 2768 | |
| 2769 | while ((rtnval = open (path, oflag, mode)) == -1 |
| 2770 | && (errno == EINTR)); |
| 2771 | return (rtnval); |
| 2772 | } |
| 2773 | |
| 2774 | #endif /* INTERRUPTIBLE_OPEN */ |
| 2775 | |
| 2776 | #ifdef INTERRUPTIBLE_CLOSE |
| 2777 | |
| 2778 | sys_close (fd) |
| 2779 | int fd; |
| 2780 | { |
| 2781 | register int rtnval; |
| 2782 | |
| 2783 | while ((rtnval = close (fd)) == -1 |
| 2784 | && (errno == EINTR)); |
| 2785 | return rtnval; |
| 2786 | } |
| 2787 | |
| 2788 | #endif /* INTERRUPTIBLE_CLOSE */ |
| 2789 | |
| 2790 | #ifdef INTERRUPTIBLE_IO |
| 2791 | |
| 2792 | int |
| 2793 | sys_read (fildes, buf, nbyte) |
| 2794 | int fildes; |
| 2795 | char *buf; |
| 2796 | unsigned int nbyte; |
| 2797 | { |
| 2798 | register int rtnval; |
| 2799 | |
| 2800 | while ((rtnval = read (fildes, buf, nbyte)) == -1 |
| 2801 | && (errno == EINTR)); |
| 2802 | return (rtnval); |
| 2803 | } |
| 2804 | |
| 2805 | int |
| 2806 | sys_write (fildes, buf, nbyte) |
| 2807 | int fildes; |
| 2808 | char *buf; |
| 2809 | unsigned int nbyte; |
| 2810 | { |
| 2811 | register int rtnval, bytes_written; |
| 2812 | |
| 2813 | bytes_written = 0; |
| 2814 | |
| 2815 | while (nbyte > 0) |
| 2816 | { |
| 2817 | rtnval = write (fildes, buf, nbyte); |
| 2818 | |
| 2819 | if (rtnval == -1) |
| 2820 | { |
| 2821 | if (errno == EINTR) |
| 2822 | continue; |
| 2823 | else |
| 2824 | return (bytes_written ? bytes_written : -1); |
| 2825 | } |
| 2826 | |
| 2827 | buf += rtnval; |
| 2828 | nbyte -= rtnval; |
| 2829 | bytes_written += rtnval; |
| 2830 | } |
| 2831 | return (bytes_written); |
| 2832 | } |
| 2833 | |
| 2834 | #endif /* INTERRUPTIBLE_IO */ |
| 2835 | \f |
| 2836 | #ifndef HAVE_VFORK |
| 2837 | |
| 2838 | /* |
| 2839 | * Substitute fork for vfork on USG flavors. |
| 2840 | */ |
| 2841 | |
| 2842 | vfork () |
| 2843 | { |
| 2844 | return (fork ()); |
| 2845 | } |
| 2846 | |
| 2847 | #endif /* not HAVE_VFORK */ |
| 2848 | \f |
| 2849 | #ifdef USG |
| 2850 | /* |
| 2851 | * All of the following are for USG. |
| 2852 | * |
| 2853 | * On USG systems the system calls are INTERRUPTIBLE by signals |
| 2854 | * that the user program has elected to catch. Thus the system call |
| 2855 | * must be retried in these cases. To handle this without massive |
| 2856 | * changes in the source code, we remap the standard system call names |
| 2857 | * to names for our own functions in sysdep.c that do the system call |
| 2858 | * with retries. Actually, for portability reasons, it is good |
| 2859 | * programming practice, as this example shows, to limit all actual |
| 2860 | * system calls to a single occurrence in the source. Sure, this |
| 2861 | * adds an extra level of function call overhead but it is almost |
| 2862 | * always negligible. Fred Fish, Unisoft Systems Inc. |
| 2863 | */ |
| 2864 | |
| 2865 | #ifndef HAVE_SYS_SIGLIST |
| 2866 | char *sys_siglist[NSIG + 1] = |
| 2867 | { |
| 2868 | #ifdef AIX |
| 2869 | /* AIX has changed the signals a bit */ |
| 2870 | "bogus signal", /* 0 */ |
| 2871 | "hangup", /* 1 SIGHUP */ |
| 2872 | "interrupt", /* 2 SIGINT */ |
| 2873 | "quit", /* 3 SIGQUIT */ |
| 2874 | "illegal instruction", /* 4 SIGILL */ |
| 2875 | "trace trap", /* 5 SIGTRAP */ |
| 2876 | "IOT instruction", /* 6 SIGIOT */ |
| 2877 | "crash likely", /* 7 SIGDANGER */ |
| 2878 | "floating point exception", /* 8 SIGFPE */ |
| 2879 | "kill", /* 9 SIGKILL */ |
| 2880 | "bus error", /* 10 SIGBUS */ |
| 2881 | "segmentation violation", /* 11 SIGSEGV */ |
| 2882 | "bad argument to system call", /* 12 SIGSYS */ |
| 2883 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ |
| 2884 | "alarm clock", /* 14 SIGALRM */ |
| 2885 | "software termination signum", /* 15 SIGTERM */ |
| 2886 | "user defined signal 1", /* 16 SIGUSR1 */ |
| 2887 | "user defined signal 2", /* 17 SIGUSR2 */ |
| 2888 | "death of a child", /* 18 SIGCLD */ |
| 2889 | "power-fail restart", /* 19 SIGPWR */ |
| 2890 | "bogus signal", /* 20 */ |
| 2891 | "bogus signal", /* 21 */ |
| 2892 | "bogus signal", /* 22 */ |
| 2893 | "bogus signal", /* 23 */ |
| 2894 | "bogus signal", /* 24 */ |
| 2895 | "LAN I/O interrupt", /* 25 SIGAIO */ |
| 2896 | "PTY I/O interrupt", /* 26 SIGPTY */ |
| 2897 | "I/O intervention required", /* 27 SIGIOINT */ |
| 2898 | "HFT grant", /* 28 SIGGRANT */ |
| 2899 | "HFT retract", /* 29 SIGRETRACT */ |
| 2900 | "HFT sound done", /* 30 SIGSOUND */ |
| 2901 | "HFT input ready", /* 31 SIGMSG */ |
| 2902 | #else /* not AIX */ |
| 2903 | "bogus signal", /* 0 */ |
| 2904 | "hangup", /* 1 SIGHUP */ |
| 2905 | "interrupt", /* 2 SIGINT */ |
| 2906 | "quit", /* 3 SIGQUIT */ |
| 2907 | "illegal instruction", /* 4 SIGILL */ |
| 2908 | "trace trap", /* 5 SIGTRAP */ |
| 2909 | "IOT instruction", /* 6 SIGIOT */ |
| 2910 | "EMT instruction", /* 7 SIGEMT */ |
| 2911 | "floating point exception", /* 8 SIGFPE */ |
| 2912 | "kill", /* 9 SIGKILL */ |
| 2913 | "bus error", /* 10 SIGBUS */ |
| 2914 | "segmentation violation", /* 11 SIGSEGV */ |
| 2915 | "bad argument to system call", /* 12 SIGSYS */ |
| 2916 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ |
| 2917 | "alarm clock", /* 14 SIGALRM */ |
| 2918 | "software termination signum", /* 15 SIGTERM */ |
| 2919 | "user defined signal 1", /* 16 SIGUSR1 */ |
| 2920 | "user defined signal 2", /* 17 SIGUSR2 */ |
| 2921 | "death of a child", /* 18 SIGCLD */ |
| 2922 | "power-fail restart", /* 19 SIGPWR */ |
| 2923 | #ifdef sun |
| 2924 | "window size change", /* 20 SIGWINCH */ |
| 2925 | "urgent socket condition", /* 21 SIGURG */ |
| 2926 | "pollable event occured", /* 22 SIGPOLL */ |
| 2927 | "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ |
| 2928 | "user stop requested from tty", /* 24 SIGTSTP */ |
| 2929 | "stopped process has been continued", /* 25 SIGCONT */ |
| 2930 | "background tty read attempted", /* 26 SIGTTIN */ |
| 2931 | "background tty write attempted", /* 27 SIGTTOU */ |
| 2932 | "virtual timer expired", /* 28 SIGVTALRM */ |
| 2933 | "profiling timer expired", /* 29 SIGPROF */ |
| 2934 | "exceeded cpu limit", /* 30 SIGXCPU */ |
| 2935 | "exceeded file size limit", /* 31 SIGXFSZ */ |
| 2936 | "process's lwps are blocked", /* 32 SIGWAITING */ |
| 2937 | "special signal used by thread library", /* 33 SIGLWP */ |
| 2938 | #ifdef SIGFREEZE |
| 2939 | "Special Signal Used By CPR", /* 34 SIGFREEZE */ |
| 2940 | #endif |
| 2941 | #ifdef SIGTHAW |
| 2942 | "Special Signal Used By CPR", /* 35 SIGTHAW */ |
| 2943 | #endif |
| 2944 | #endif /* sun */ |
| 2945 | #endif /* not AIX */ |
| 2946 | 0 |
| 2947 | }; |
| 2948 | #endif /* HAVE_SYS_SIGLIST */ |
| 2949 | |
| 2950 | /* |
| 2951 | * Warning, this function may not duplicate 4.2 action properly |
| 2952 | * under error conditions. |
| 2953 | */ |
| 2954 | |
| 2955 | #ifndef MAXPATHLEN |
| 2956 | /* In 4.1, param.h fails to define this. */ |
| 2957 | #define MAXPATHLEN 1024 |
| 2958 | #endif |
| 2959 | |
| 2960 | #ifndef HAVE_GETWD |
| 2961 | |
| 2962 | char * |
| 2963 | getwd (pathname) |
| 2964 | char *pathname; |
| 2965 | { |
| 2966 | char *npath, *spath; |
| 2967 | extern char *getcwd (); |
| 2968 | |
| 2969 | BLOCK_INPUT; /* getcwd uses malloc */ |
| 2970 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
| 2971 | if (spath == 0) |
| 2972 | return spath; |
| 2973 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
| 2974 | up to first slash. Should be harmless on other systems. */ |
| 2975 | while (*npath && *npath != '/') |
| 2976 | npath++; |
| 2977 | strcpy (pathname, npath); |
| 2978 | free (spath); /* getcwd uses malloc */ |
| 2979 | UNBLOCK_INPUT; |
| 2980 | return pathname; |
| 2981 | } |
| 2982 | |
| 2983 | #endif /* HAVE_GETWD */ |
| 2984 | |
| 2985 | /* |
| 2986 | * Emulate rename using unlink/link. Note that this is |
| 2987 | * only partially correct. Also, doesn't enforce restriction |
| 2988 | * that files be of same type (regular->regular, dir->dir, etc). |
| 2989 | */ |
| 2990 | |
| 2991 | #ifndef HAVE_RENAME |
| 2992 | |
| 2993 | rename (from, to) |
| 2994 | const char *from; |
| 2995 | const char *to; |
| 2996 | { |
| 2997 | if (access (from, 0) == 0) |
| 2998 | { |
| 2999 | unlink (to); |
| 3000 | if (link (from, to) == 0) |
| 3001 | if (unlink (from) == 0) |
| 3002 | return (0); |
| 3003 | } |
| 3004 | return (-1); |
| 3005 | } |
| 3006 | |
| 3007 | #endif |
| 3008 | |
| 3009 | #ifdef MISSING_UTIMES |
| 3010 | |
| 3011 | /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */ |
| 3012 | |
| 3013 | utimes () |
| 3014 | { |
| 3015 | } |
| 3016 | #endif |
| 3017 | |
| 3018 | #ifdef IRIS_UTIME |
| 3019 | |
| 3020 | /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the |
| 3021 | utimbuf structure defined anywhere but in the man page. */ |
| 3022 | |
| 3023 | struct utimbuf |
| 3024 | { |
| 3025 | long actime; |
| 3026 | long modtime; |
| 3027 | }; |
| 3028 | |
| 3029 | utimes (name, tvp) |
| 3030 | char *name; |
| 3031 | struct timeval tvp[]; |
| 3032 | { |
| 3033 | struct utimbuf utb; |
| 3034 | utb.actime = tvp[0].tv_sec; |
| 3035 | utb.modtime = tvp[1].tv_sec; |
| 3036 | utime (name, &utb); |
| 3037 | } |
| 3038 | #endif /* IRIS_UTIME */ |
| 3039 | |
| 3040 | |
| 3041 | #ifdef HPUX |
| 3042 | #ifndef HAVE_PERROR |
| 3043 | |
| 3044 | /* HPUX curses library references perror, but as far as we know |
| 3045 | it won't be called. Anyway this definition will do for now. */ |
| 3046 | |
| 3047 | perror () |
| 3048 | { |
| 3049 | } |
| 3050 | |
| 3051 | #endif /* not HAVE_PERROR */ |
| 3052 | #endif /* HPUX */ |
| 3053 | |
| 3054 | #ifndef HAVE_DUP2 |
| 3055 | |
| 3056 | /* |
| 3057 | * Emulate BSD dup2. First close newd if it already exists. |
| 3058 | * Then, attempt to dup oldd. If not successful, call dup2 recursively |
| 3059 | * until we are, then close the unsuccessful ones. |
| 3060 | */ |
| 3061 | |
| 3062 | dup2 (oldd, newd) |
| 3063 | int oldd; |
| 3064 | int newd; |
| 3065 | { |
| 3066 | register int fd, ret; |
| 3067 | |
| 3068 | sys_close (newd); |
| 3069 | |
| 3070 | #ifdef F_DUPFD |
| 3071 | fd = fcntl (oldd, F_DUPFD, newd); |
| 3072 | if (fd != newd) |
| 3073 | error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno)); |
| 3074 | #else |
| 3075 | fd = dup (old); |
| 3076 | if (fd == -1) |
| 3077 | return -1; |
| 3078 | if (fd == new) |
| 3079 | return new; |
| 3080 | ret = dup2 (old,new); |
| 3081 | sys_close (fd); |
| 3082 | return ret; |
| 3083 | #endif |
| 3084 | } |
| 3085 | |
| 3086 | #endif /* not HAVE_DUP2 */ |
| 3087 | |
| 3088 | /* |
| 3089 | * Gettimeofday. Simulate as much as possible. Only accurate |
| 3090 | * to nearest second. Emacs doesn't use tzp so ignore it for now. |
| 3091 | * Only needed when subprocesses are defined. |
| 3092 | */ |
| 3093 | |
| 3094 | #ifdef subprocesses |
| 3095 | #ifndef VMS |
| 3096 | #ifndef HAVE_GETTIMEOFDAY |
| 3097 | #ifdef HAVE_TIMEVAL |
| 3098 | |
| 3099 | /* ARGSUSED */ |
| 3100 | gettimeofday (tp, tzp) |
| 3101 | struct timeval *tp; |
| 3102 | struct timezone *tzp; |
| 3103 | { |
| 3104 | extern long time (); |
| 3105 | |
| 3106 | tp->tv_sec = time ((long *)0); |
| 3107 | tp->tv_usec = 0; |
| 3108 | if (tzp != 0) |
| 3109 | tzp->tz_minuteswest = -1; |
| 3110 | } |
| 3111 | |
| 3112 | #endif |
| 3113 | #endif |
| 3114 | #endif |
| 3115 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ |
| 3116 | |
| 3117 | /* |
| 3118 | * This function will go away as soon as all the stubs fixed. (fnf) |
| 3119 | */ |
| 3120 | |
| 3121 | croak (badfunc) |
| 3122 | char *badfunc; |
| 3123 | { |
| 3124 | printf ("%s not yet implemented\r\n", badfunc); |
| 3125 | reset_sys_modes (); |
| 3126 | exit (1); |
| 3127 | } |
| 3128 | |
| 3129 | #endif /* USG */ |
| 3130 | \f |
| 3131 | #ifdef DGUX |
| 3132 | |
| 3133 | char *sys_siglist[NSIG + 1] = |
| 3134 | { |
| 3135 | "null signal", /* 0 SIGNULL */ |
| 3136 | "hangup", /* 1 SIGHUP */ |
| 3137 | "interrupt", /* 2 SIGINT */ |
| 3138 | "quit", /* 3 SIGQUIT */ |
| 3139 | "illegal instruction", /* 4 SIGILL */ |
| 3140 | "trace trap", /* 5 SIGTRAP */ |
| 3141 | "abort termination", /* 6 SIGABRT */ |
| 3142 | "SIGEMT", /* 7 SIGEMT */ |
| 3143 | "floating point exception", /* 8 SIGFPE */ |
| 3144 | "kill", /* 9 SIGKILL */ |
| 3145 | "bus error", /* 10 SIGBUS */ |
| 3146 | "segmentation violation", /* 11 SIGSEGV */ |
| 3147 | "bad argument to system call", /* 12 SIGSYS */ |
| 3148 | "write on a pipe with no reader", /* 13 SIGPIPE */ |
| 3149 | "alarm clock", /* 14 SIGALRM */ |
| 3150 | "software termination signal", /* 15 SIGTERM */ |
| 3151 | "user defined signal 1", /* 16 SIGUSR1 */ |
| 3152 | "user defined signal 2", /* 17 SIGUSR2 */ |
| 3153 | "child stopped or terminated", /* 18 SIGCLD */ |
| 3154 | "power-fail restart", /* 19 SIGPWR */ |
| 3155 | "window size changed", /* 20 SIGWINCH */ |
| 3156 | "undefined", /* 21 */ |
| 3157 | "pollable event occurred", /* 22 SIGPOLL */ |
| 3158 | "sendable stop signal not from tty", /* 23 SIGSTOP */ |
| 3159 | "stop signal from tty", /* 24 SIGSTP */ |
| 3160 | "continue a stopped process", /* 25 SIGCONT */ |
| 3161 | "attempted background tty read", /* 26 SIGTTIN */ |
| 3162 | "attempted background tty write", /* 27 SIGTTOU */ |
| 3163 | "undefined", /* 28 */ |
| 3164 | "undefined", /* 29 */ |
| 3165 | "undefined", /* 30 */ |
| 3166 | "undefined", /* 31 */ |
| 3167 | "undefined", /* 32 */ |
| 3168 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ |
| 3169 | "I/O is possible", /* 34 SIGIO */ |
| 3170 | "exceeded cpu time limit", /* 35 SIGXCPU */ |
| 3171 | "exceeded file size limit", /* 36 SIGXFSZ */ |
| 3172 | "virtual time alarm", /* 37 SIGVTALRM */ |
| 3173 | "profiling time alarm", /* 38 SIGPROF */ |
| 3174 | "undefined", /* 39 */ |
| 3175 | "file record locks revoked", /* 40 SIGLOST */ |
| 3176 | "undefined", /* 41 */ |
| 3177 | "undefined", /* 42 */ |
| 3178 | "undefined", /* 43 */ |
| 3179 | "undefined", /* 44 */ |
| 3180 | "undefined", /* 45 */ |
| 3181 | "undefined", /* 46 */ |
| 3182 | "undefined", /* 47 */ |
| 3183 | "undefined", /* 48 */ |
| 3184 | "undefined", /* 49 */ |
| 3185 | "undefined", /* 50 */ |
| 3186 | "undefined", /* 51 */ |
| 3187 | "undefined", /* 52 */ |
| 3188 | "undefined", /* 53 */ |
| 3189 | "undefined", /* 54 */ |
| 3190 | "undefined", /* 55 */ |
| 3191 | "undefined", /* 56 */ |
| 3192 | "undefined", /* 57 */ |
| 3193 | "undefined", /* 58 */ |
| 3194 | "undefined", /* 59 */ |
| 3195 | "undefined", /* 60 */ |
| 3196 | "undefined", /* 61 */ |
| 3197 | "undefined", /* 62 */ |
| 3198 | "undefined", /* 63 */ |
| 3199 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ |
| 3200 | 0 |
| 3201 | }; |
| 3202 | |
| 3203 | #endif /* DGUX */ |
| 3204 | \f |
| 3205 | /* Directory routines for systems that don't have them. */ |
| 3206 | |
| 3207 | #ifdef SYSV_SYSTEM_DIR |
| 3208 | |
| 3209 | #include <dirent.h> |
| 3210 | |
| 3211 | #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR) |
| 3212 | |
| 3213 | int |
| 3214 | closedir (dirp) |
| 3215 | register DIR *dirp; /* stream from opendir */ |
| 3216 | { |
| 3217 | int rtnval; |
| 3218 | |
| 3219 | rtnval = sys_close (dirp->dd_fd); |
| 3220 | |
| 3221 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
| 3222 | in one block. Why in the world are we freeing this ourselves |
| 3223 | anyway? */ |
| 3224 | #if ! (defined (sun) && defined (USG5_4)) |
| 3225 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ |
| 3226 | #endif |
| 3227 | xfree ((char *) dirp); |
| 3228 | |
| 3229 | return rtnval; |
| 3230 | } |
| 3231 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
| 3232 | #endif /* SYSV_SYSTEM_DIR */ |
| 3233 | |
| 3234 | #ifdef NONSYSTEM_DIR_LIBRARY |
| 3235 | |
| 3236 | DIR * |
| 3237 | opendir (filename) |
| 3238 | char *filename; /* name of directory */ |
| 3239 | { |
| 3240 | register DIR *dirp; /* -> malloc'ed storage */ |
| 3241 | register int fd; /* file descriptor for read */ |
| 3242 | struct stat sbuf; /* result of fstat */ |
| 3243 | |
| 3244 | fd = sys_open (filename, 0); |
| 3245 | if (fd < 0) |
| 3246 | return 0; |
| 3247 | |
| 3248 | BLOCK_INPUT; |
| 3249 | if (fstat (fd, &sbuf) < 0 |
| 3250 | || (sbuf.st_mode & S_IFMT) != S_IFDIR |
| 3251 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) |
| 3252 | { |
| 3253 | sys_close (fd); |
| 3254 | UNBLOCK_INPUT; |
| 3255 | return 0; /* bad luck today */ |
| 3256 | } |
| 3257 | UNBLOCK_INPUT; |
| 3258 | |
| 3259 | dirp->dd_fd = fd; |
| 3260 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ |
| 3261 | |
| 3262 | return dirp; |
| 3263 | } |
| 3264 | |
| 3265 | void |
| 3266 | closedir (dirp) |
| 3267 | register DIR *dirp; /* stream from opendir */ |
| 3268 | { |
| 3269 | sys_close (dirp->dd_fd); |
| 3270 | xfree ((char *) dirp); |
| 3271 | } |
| 3272 | |
| 3273 | |
| 3274 | #ifndef VMS |
| 3275 | #define DIRSIZ 14 |
| 3276 | struct olddir |
| 3277 | { |
| 3278 | ino_t od_ino; /* inode */ |
| 3279 | char od_name[DIRSIZ]; /* filename */ |
| 3280 | }; |
| 3281 | #endif /* not VMS */ |
| 3282 | |
| 3283 | struct direct dir_static; /* simulated directory contents */ |
| 3284 | |
| 3285 | /* ARGUSED */ |
| 3286 | struct direct * |
| 3287 | readdir (dirp) |
| 3288 | register DIR *dirp; /* stream from opendir */ |
| 3289 | { |
| 3290 | #ifndef VMS |
| 3291 | register struct olddir *dp; /* -> directory data */ |
| 3292 | #else /* VMS */ |
| 3293 | register struct dir$_name *dp; /* -> directory data */ |
| 3294 | register struct dir$_version *dv; /* -> version data */ |
| 3295 | #endif /* VMS */ |
| 3296 | |
| 3297 | for (; ;) |
| 3298 | { |
| 3299 | if (dirp->dd_loc >= dirp->dd_size) |
| 3300 | dirp->dd_loc = dirp->dd_size = 0; |
| 3301 | |
| 3302 | if (dirp->dd_size == 0 /* refill buffer */ |
| 3303 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) |
| 3304 | return 0; |
| 3305 | |
| 3306 | #ifndef VMS |
| 3307 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; |
| 3308 | dirp->dd_loc += sizeof (struct olddir); |
| 3309 | |
| 3310 | if (dp->od_ino != 0) /* not deleted entry */ |
| 3311 | { |
| 3312 | dir_static.d_ino = dp->od_ino; |
| 3313 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); |
| 3314 | dir_static.d_name[DIRSIZ] = '\0'; |
| 3315 | dir_static.d_namlen = strlen (dir_static.d_name); |
| 3316 | dir_static.d_reclen = sizeof (struct direct) |
| 3317 | - MAXNAMLEN + 3 |
| 3318 | + dir_static.d_namlen - dir_static.d_namlen % 4; |
| 3319 | return &dir_static; /* -> simulated structure */ |
| 3320 | } |
| 3321 | #else /* VMS */ |
| 3322 | dp = (struct dir$_name *) dirp->dd_buf; |
| 3323 | if (dirp->dd_loc == 0) |
| 3324 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 |
| 3325 | : dp->dir$b_namecount; |
| 3326 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; |
| 3327 | dir_static.d_ino = dv->dir$w_fid_num; |
| 3328 | dir_static.d_namlen = dp->dir$b_namecount; |
| 3329 | dir_static.d_reclen = sizeof (struct direct) |
| 3330 | - MAXNAMLEN + 3 |
| 3331 | + dir_static.d_namlen - dir_static.d_namlen % 4; |
| 3332 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); |
| 3333 | dir_static.d_name[dir_static.d_namlen] = '\0'; |
| 3334 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ |
| 3335 | return &dir_static; |
| 3336 | #endif /* VMS */ |
| 3337 | } |
| 3338 | } |
| 3339 | |
| 3340 | #ifdef VMS |
| 3341 | /* readdirver is just like readdir except it returns all versions of a file |
| 3342 | as separate entries. */ |
| 3343 | |
| 3344 | /* ARGUSED */ |
| 3345 | struct direct * |
| 3346 | readdirver (dirp) |
| 3347 | register DIR *dirp; /* stream from opendir */ |
| 3348 | { |
| 3349 | register struct dir$_name *dp; /* -> directory data */ |
| 3350 | register struct dir$_version *dv; /* -> version data */ |
| 3351 | |
| 3352 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) |
| 3353 | dirp->dd_loc = dirp->dd_size = 0; |
| 3354 | |
| 3355 | if (dirp->dd_size == 0 /* refill buffer */ |
| 3356 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) |
| 3357 | return 0; |
| 3358 | |
| 3359 | dp = (struct dir$_name *) dirp->dd_buf; |
| 3360 | if (dirp->dd_loc == 0) |
| 3361 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 |
| 3362 | : dp->dir$b_namecount; |
| 3363 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; |
| 3364 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); |
| 3365 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); |
| 3366 | dir_static.d_namlen = strlen (dir_static.d_name); |
| 3367 | dir_static.d_ino = dv->dir$w_fid_num; |
| 3368 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 |
| 3369 | + dir_static.d_namlen - dir_static.d_namlen % 4; |
| 3370 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); |
| 3371 | return &dir_static; |
| 3372 | } |
| 3373 | |
| 3374 | #endif /* VMS */ |
| 3375 | |
| 3376 | #endif /* NONSYSTEM_DIR_LIBRARY */ |
| 3377 | |
| 3378 | \f |
| 3379 | /* mkdir and rmdir functions, for systems which don't have them. */ |
| 3380 | |
| 3381 | #ifndef HAVE_MKDIR |
| 3382 | /* |
| 3383 | * Written by Robert Rother, Mariah Corporation, August 1985. |
| 3384 | * |
| 3385 | * If you want it, it's yours. All I ask in return is that if you |
| 3386 | * figure out how to do this in a Bourne Shell script you send me |
| 3387 | * a copy. |
| 3388 | * sdcsvax!rmr or rmr@uscd |
| 3389 | * |
| 3390 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible |
| 3391 | * subroutine. 11Mar86; hoptoad!gnu |
| 3392 | * |
| 3393 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, |
| 3394 | * subroutine didn't return EEXIST. It does now. |
| 3395 | */ |
| 3396 | |
| 3397 | /* |
| 3398 | * Make a directory. |
| 3399 | */ |
| 3400 | #ifdef MKDIR_PROTOTYPE |
| 3401 | MKDIR_PROTOTYPE |
| 3402 | #else |
| 3403 | int |
| 3404 | mkdir (dpath, dmode) |
| 3405 | char *dpath; |
| 3406 | int dmode; |
| 3407 | #endif |
| 3408 | { |
| 3409 | int cpid, status, fd; |
| 3410 | struct stat statbuf; |
| 3411 | |
| 3412 | if (stat (dpath, &statbuf) == 0) |
| 3413 | { |
| 3414 | errno = EEXIST; /* Stat worked, so it already exists */ |
| 3415 | return -1; |
| 3416 | } |
| 3417 | |
| 3418 | /* If stat fails for a reason other than non-existence, return error */ |
| 3419 | if (errno != ENOENT) |
| 3420 | return -1; |
| 3421 | |
| 3422 | synch_process_alive = 1; |
| 3423 | switch (cpid = fork ()) |
| 3424 | { |
| 3425 | |
| 3426 | case -1: /* Error in fork */ |
| 3427 | return (-1); /* Errno is set already */ |
| 3428 | |
| 3429 | case 0: /* Child process */ |
| 3430 | /* |
| 3431 | * Cheap hack to set mode of new directory. Since this |
| 3432 | * child process is going away anyway, we zap its umask. |
| 3433 | * FIXME, this won't suffice to set SUID, SGID, etc. on this |
| 3434 | * directory. Does anybody care? |
| 3435 | */ |
| 3436 | status = umask (0); /* Get current umask */ |
| 3437 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ |
| 3438 | fd = sys_open("/dev/null", 2); |
| 3439 | if (fd >= 0) |
| 3440 | { |
| 3441 | dup2 (fd, 0); |
| 3442 | dup2 (fd, 1); |
| 3443 | dup2 (fd, 2); |
| 3444 | } |
| 3445 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
| 3446 | _exit (-1); /* Can't exec /bin/mkdir */ |
| 3447 | |
| 3448 | default: /* Parent process */ |
| 3449 | wait_for_termination (cpid); |
| 3450 | } |
| 3451 | |
| 3452 | if (synch_process_death != 0 || synch_process_retcode != 0) |
| 3453 | { |
| 3454 | errno = EIO; /* We don't know why, but */ |
| 3455 | return -1; /* /bin/mkdir failed */ |
| 3456 | } |
| 3457 | |
| 3458 | return 0; |
| 3459 | } |
| 3460 | #endif /* not HAVE_MKDIR */ |
| 3461 | |
| 3462 | #ifndef HAVE_RMDIR |
| 3463 | int |
| 3464 | rmdir (dpath) |
| 3465 | char *dpath; |
| 3466 | { |
| 3467 | int cpid, status, fd; |
| 3468 | struct stat statbuf; |
| 3469 | |
| 3470 | if (stat (dpath, &statbuf) != 0) |
| 3471 | { |
| 3472 | /* Stat just set errno. We don't have to */ |
| 3473 | return -1; |
| 3474 | } |
| 3475 | |
| 3476 | synch_process_alive = 1; |
| 3477 | switch (cpid = fork ()) |
| 3478 | { |
| 3479 | |
| 3480 | case -1: /* Error in fork */ |
| 3481 | return (-1); /* Errno is set already */ |
| 3482 | |
| 3483 | case 0: /* Child process */ |
| 3484 | fd = sys_open("/dev/null", 2); |
| 3485 | if (fd >= 0) |
| 3486 | { |
| 3487 | dup2 (fd, 0); |
| 3488 | dup2 (fd, 1); |
| 3489 | dup2 (fd, 2); |
| 3490 | } |
| 3491 | wait_for_termination (cpid); |
| 3492 | if (synch_process_death != 0 || synch_process_retcode != 0) |
| 3493 | return -1; /* /bin/rmdir failed */ |
| 3494 | default: /* Parent process */ |
| 3495 | while (cpid != wait (&status)); /* Wait for kid to finish */ |
| 3496 | } |
| 3497 | |
| 3498 | if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0) |
| 3499 | { |
| 3500 | errno = EIO; /* We don't know why, but */ |
| 3501 | return -1; /* /bin/mkdir failed */ |
| 3502 | } |
| 3503 | |
| 3504 | return 0; |
| 3505 | } |
| 3506 | #endif /* !HAVE_RMDIR */ |
| 3507 | |
| 3508 | |
| 3509 | \f |
| 3510 | /* Functions for VMS */ |
| 3511 | #ifdef VMS |
| 3512 | #include "vms-pwd.h" |
| 3513 | #include <acldef.h> |
| 3514 | #include <chpdef.h> |
| 3515 | #include <jpidef.h> |
| 3516 | |
| 3517 | /* Return as a string the VMS error string pertaining to STATUS. |
| 3518 | Reuses the same static buffer each time it is called. */ |
| 3519 | |
| 3520 | char * |
| 3521 | vmserrstr (status) |
| 3522 | int status; /* VMS status code */ |
| 3523 | { |
| 3524 | int bufadr[2]; |
| 3525 | short len; |
| 3526 | static char buf[257]; |
| 3527 | |
| 3528 | bufadr[0] = sizeof buf - 1; |
| 3529 | bufadr[1] = (int) buf; |
| 3530 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) |
| 3531 | return "untranslatable VMS error status"; |
| 3532 | buf[len] = '\0'; |
| 3533 | return buf; |
| 3534 | } |
| 3535 | |
| 3536 | #ifdef access |
| 3537 | #undef access |
| 3538 | |
| 3539 | /* The following is necessary because 'access' emulation by VMS C (2.0) does |
| 3540 | * not work correctly. (It also doesn't work well in version 2.3.) |
| 3541 | */ |
| 3542 | |
| 3543 | #ifdef VMS4_4 |
| 3544 | |
| 3545 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ |
| 3546 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } |
| 3547 | |
| 3548 | typedef union { |
| 3549 | struct { |
| 3550 | unsigned short s_buflen; |
| 3551 | unsigned short s_code; |
| 3552 | char *s_bufadr; |
| 3553 | unsigned short *s_retlenadr; |
| 3554 | } s; |
| 3555 | int end; |
| 3556 | } item; |
| 3557 | #define buflen s.s_buflen |
| 3558 | #define code s.s_code |
| 3559 | #define bufadr s.s_bufadr |
| 3560 | #define retlenadr s.s_retlenadr |
| 3561 | |
| 3562 | #define R_OK 4 /* test for read permission */ |
| 3563 | #define W_OK 2 /* test for write permission */ |
| 3564 | #define X_OK 1 /* test for execute (search) permission */ |
| 3565 | #define F_OK 0 /* test for presence of file */ |
| 3566 | |
| 3567 | int |
| 3568 | sys_access (path, mode) |
| 3569 | char *path; |
| 3570 | int mode; |
| 3571 | { |
| 3572 | static char *user = NULL; |
| 3573 | char dir_fn[512]; |
| 3574 | |
| 3575 | /* translate possible directory spec into .DIR file name, so brain-dead |
| 3576 | * access can treat the directory like a file. */ |
| 3577 | if (directory_file_name (path, dir_fn)) |
| 3578 | path = dir_fn; |
| 3579 | |
| 3580 | if (mode == F_OK) |
| 3581 | return access (path, mode); |
| 3582 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) |
| 3583 | return -1; |
| 3584 | { |
| 3585 | int stat; |
| 3586 | int flags; |
| 3587 | int acces; |
| 3588 | unsigned short int dummy; |
| 3589 | item itemlst[3]; |
| 3590 | static int constant = ACL$C_FILE; |
| 3591 | DESCRIPTOR (path_desc, path); |
| 3592 | DESCRIPTOR (user_desc, user); |
| 3593 | |
| 3594 | flags = 0; |
| 3595 | acces = 0; |
| 3596 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) |
| 3597 | return stat; |
| 3598 | if (mode & R_OK) |
| 3599 | acces |= CHP$M_READ; |
| 3600 | if (mode & W_OK) |
| 3601 | acces |= CHP$M_WRITE; |
| 3602 | itemlst[0].buflen = sizeof (int); |
| 3603 | itemlst[0].code = CHP$_FLAGS; |
| 3604 | itemlst[0].bufadr = (char *) &flags; |
| 3605 | itemlst[0].retlenadr = &dummy; |
| 3606 | itemlst[1].buflen = sizeof (int); |
| 3607 | itemlst[1].code = CHP$_ACCESS; |
| 3608 | itemlst[1].bufadr = (char *) &acces; |
| 3609 | itemlst[1].retlenadr = &dummy; |
| 3610 | itemlst[2].end = CHP$_END; |
| 3611 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); |
| 3612 | return stat == SS$_NORMAL ? 0 : -1; |
| 3613 | } |
| 3614 | } |
| 3615 | |
| 3616 | #else /* not VMS4_4 */ |
| 3617 | |
| 3618 | #include <prvdef.h> |
| 3619 | #define ACE$M_WRITE 2 |
| 3620 | #define ACE$C_KEYID 1 |
| 3621 | |
| 3622 | static unsigned short memid, grpid; |
| 3623 | static unsigned int uic; |
| 3624 | |
| 3625 | /* Called from init_sys_modes, so it happens not very often |
| 3626 | but at least each time Emacs is loaded. */ |
| 3627 | sys_access_reinit () |
| 3628 | { |
| 3629 | uic = 0; |
| 3630 | } |
| 3631 | |
| 3632 | int |
| 3633 | sys_access (filename, type) |
| 3634 | char * filename; |
| 3635 | int type; |
| 3636 | { |
| 3637 | struct FAB fab; |
| 3638 | struct XABPRO xab; |
| 3639 | int status, size, i, typecode, acl_controlled; |
| 3640 | unsigned int *aclptr, *aclend, aclbuf[60]; |
| 3641 | union prvdef prvmask; |
| 3642 | |
| 3643 | /* Get UIC and GRP values for protection checking. */ |
| 3644 | if (uic == 0) |
| 3645 | { |
| 3646 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); |
| 3647 | if (! (status & 1)) |
| 3648 | return -1; |
| 3649 | memid = uic & 0xFFFF; |
| 3650 | grpid = uic >> 16; |
| 3651 | } |
| 3652 | |
| 3653 | if (type != 2) /* not checking write access */ |
| 3654 | return access (filename, type); |
| 3655 | |
| 3656 | /* Check write protection. */ |
| 3657 | |
| 3658 | #define CHECKPRIV(bit) (prvmask.bit) |
| 3659 | #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) |
| 3660 | |
| 3661 | /* Find privilege bits */ |
| 3662 | status = SYS$SETPRV (0, 0, 0, prvmask); |
| 3663 | if (! (status & 1)) |
| 3664 | error ("Unable to find privileges: %s", vmserrstr (status)); |
| 3665 | if (CHECKPRIV (PRV$V_BYPASS)) |
| 3666 | return 0; /* BYPASS enabled */ |
| 3667 | fab = cc$rms_fab; |
| 3668 | fab.fab$b_fac = FAB$M_GET; |
| 3669 | fab.fab$l_fna = filename; |
| 3670 | fab.fab$b_fns = strlen (filename); |
| 3671 | fab.fab$l_xab = &xab; |
| 3672 | xab = cc$rms_xabpro; |
| 3673 | xab.xab$l_aclbuf = aclbuf; |
| 3674 | xab.xab$w_aclsiz = sizeof (aclbuf); |
| 3675 | status = SYS$OPEN (&fab, 0, 0); |
| 3676 | if (! (status & 1)) |
| 3677 | return -1; |
| 3678 | SYS$CLOSE (&fab, 0, 0); |
| 3679 | /* Check system access */ |
| 3680 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITEABLE (XAB$V_SYS)) |
| 3681 | return 0; |
| 3682 | /* Check ACL entries, if any */ |
| 3683 | acl_controlled = 0; |
| 3684 | if (xab.xab$w_acllen > 0) |
| 3685 | { |
| 3686 | aclptr = aclbuf; |
| 3687 | aclend = &aclbuf[xab.xab$w_acllen / 4]; |
| 3688 | while (*aclptr && aclptr < aclend) |
| 3689 | { |
| 3690 | size = (*aclptr & 0xff) / 4; |
| 3691 | typecode = (*aclptr >> 8) & 0xff; |
| 3692 | if (typecode == ACE$C_KEYID) |
| 3693 | for (i = size - 1; i > 1; i--) |
| 3694 | if (aclptr[i] == uic) |
| 3695 | { |
| 3696 | acl_controlled = 1; |
| 3697 | if (aclptr[1] & ACE$M_WRITE) |
| 3698 | return 0; /* Write access through ACL */ |
| 3699 | } |
| 3700 | aclptr = &aclptr[size]; |
| 3701 | } |
| 3702 | if (acl_controlled) /* ACL specified, prohibits write access */ |
| 3703 | return -1; |
| 3704 | } |
| 3705 | /* No ACL entries specified, check normal protection */ |
| 3706 | if (WRITEABLE (XAB$V_WLD)) /* World writeable */ |
| 3707 | return 0; |
| 3708 | if (WRITEABLE (XAB$V_GRP) && |
| 3709 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) |
| 3710 | return 0; /* Group writeable */ |
| 3711 | if (WRITEABLE (XAB$V_OWN) && |
| 3712 | (xab.xab$l_uic & 0xFFFF) == memid) |
| 3713 | return 0; /* Owner writeable */ |
| 3714 | |
| 3715 | return -1; /* Not writeable */ |
| 3716 | } |
| 3717 | #endif /* not VMS4_4 */ |
| 3718 | #endif /* access */ |
| 3719 | |
| 3720 | static char vtbuf[NAM$C_MAXRSS+1]; |
| 3721 | |
| 3722 | /* translate a vms file spec to a unix path */ |
| 3723 | char * |
| 3724 | sys_translate_vms (vfile) |
| 3725 | char * vfile; |
| 3726 | { |
| 3727 | char * p; |
| 3728 | char * targ; |
| 3729 | |
| 3730 | if (!vfile) |
| 3731 | return 0; |
| 3732 | |
| 3733 | targ = vtbuf; |
| 3734 | |
| 3735 | /* leading device or logical name is a root directory */ |
| 3736 | if (p = strchr (vfile, ':')) |
| 3737 | { |
| 3738 | *targ++ = '/'; |
| 3739 | while (vfile < p) |
| 3740 | *targ++ = *vfile++; |
| 3741 | vfile++; |
| 3742 | *targ++ = '/'; |
| 3743 | } |
| 3744 | p = vfile; |
| 3745 | if (*p == '[' || *p == '<') |
| 3746 | { |
| 3747 | while (*++vfile != *p + 2) |
| 3748 | switch (*vfile) |
| 3749 | { |
| 3750 | case '.': |
| 3751 | if (vfile[-1] == *p) |
| 3752 | *targ++ = '.'; |
| 3753 | *targ++ = '/'; |
| 3754 | break; |
| 3755 | |
| 3756 | case '-': |
| 3757 | *targ++ = '.'; |
| 3758 | *targ++ = '.'; |
| 3759 | break; |
| 3760 | |
| 3761 | default: |
| 3762 | *targ++ = *vfile; |
| 3763 | break; |
| 3764 | } |
| 3765 | vfile++; |
| 3766 | *targ++ = '/'; |
| 3767 | } |
| 3768 | while (*vfile) |
| 3769 | *targ++ = *vfile++; |
| 3770 | |
| 3771 | return vtbuf; |
| 3772 | } |
| 3773 | |
| 3774 | static char utbuf[NAM$C_MAXRSS+1]; |
| 3775 | |
| 3776 | /* translate a unix path to a VMS file spec */ |
| 3777 | char * |
| 3778 | sys_translate_unix (ufile) |
| 3779 | char * ufile; |
| 3780 | { |
| 3781 | int slash_seen = 0; |
| 3782 | char *p; |
| 3783 | char * targ; |
| 3784 | |
| 3785 | if (!ufile) |
| 3786 | return 0; |
| 3787 | |
| 3788 | targ = utbuf; |
| 3789 | |
| 3790 | if (*ufile == '/') |
| 3791 | { |
| 3792 | ufile++; |
| 3793 | } |
| 3794 | |
| 3795 | while (*ufile) |
| 3796 | { |
| 3797 | switch (*ufile) |
| 3798 | { |
| 3799 | case '/': |
| 3800 | if (slash_seen) |
| 3801 | if (index (&ufile[1], '/')) |
| 3802 | *targ++ = '.'; |
| 3803 | else |
| 3804 | *targ++ = ']'; |
| 3805 | else |
| 3806 | { |
| 3807 | *targ++ = ':'; |
| 3808 | if (index (&ufile[1], '/')) |
| 3809 | *targ++ = '['; |
| 3810 | slash_seen = 1; |
| 3811 | } |
| 3812 | break; |
| 3813 | |
| 3814 | case '.': |
| 3815 | if (strncmp (ufile, "./", 2) == 0) |
| 3816 | { |
| 3817 | if (!slash_seen) |
| 3818 | { |
| 3819 | *targ++ = '['; |
| 3820 | slash_seen = 1; |
| 3821 | } |
| 3822 | ufile++; /* skip the dot */ |
| 3823 | if (index (&ufile[1], '/')) |
| 3824 | *targ++ = '.'; |
| 3825 | else |
| 3826 | *targ++ = ']'; |
| 3827 | } |
| 3828 | else if (strncmp (ufile, "../", 3) == 0) |
| 3829 | { |
| 3830 | if (!slash_seen) |
| 3831 | { |
| 3832 | *targ++ = '['; |
| 3833 | slash_seen = 1; |
| 3834 | } |
| 3835 | *targ++ = '-'; |
| 3836 | ufile += 2; /* skip the dots */ |
| 3837 | if (index (&ufile[1], '/')) |
| 3838 | *targ++ = '.'; |
| 3839 | else |
| 3840 | *targ++ = ']'; |
| 3841 | } |
| 3842 | else |
| 3843 | *targ++ = *ufile; |
| 3844 | break; |
| 3845 | |
| 3846 | default: |
| 3847 | *targ++ = *ufile; |
| 3848 | break; |
| 3849 | } |
| 3850 | ufile++; |
| 3851 | } |
| 3852 | *targ = '\0'; |
| 3853 | |
| 3854 | return utbuf; |
| 3855 | } |
| 3856 | |
| 3857 | char * |
| 3858 | getwd (pathname) |
| 3859 | char *pathname; |
| 3860 | { |
| 3861 | char *ptr, *val; |
| 3862 | extern char *getcwd (); |
| 3863 | |
| 3864 | #define MAXPATHLEN 1024 |
| 3865 | |
| 3866 | ptr = xmalloc (MAXPATHLEN); |
| 3867 | val = getcwd (ptr, MAXPATHLEN); |
| 3868 | if (val == 0) |
| 3869 | { |
| 3870 | xfree (ptr); |
| 3871 | return val; |
| 3872 | } |
| 3873 | strcpy (pathname, ptr); |
| 3874 | xfree (ptr); |
| 3875 | |
| 3876 | return pathname; |
| 3877 | } |
| 3878 | |
| 3879 | getppid () |
| 3880 | { |
| 3881 | long item_code = JPI$_OWNER; |
| 3882 | unsigned long parent_id; |
| 3883 | int status; |
| 3884 | |
| 3885 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) |
| 3886 | { |
| 3887 | errno = EVMSERR; |
| 3888 | vaxc$errno = status; |
| 3889 | return -1; |
| 3890 | } |
| 3891 | return parent_id; |
| 3892 | } |
| 3893 | |
| 3894 | #undef getuid |
| 3895 | unsigned |
| 3896 | sys_getuid () |
| 3897 | { |
| 3898 | return (getgid () << 16) | getuid (); |
| 3899 | } |
| 3900 | |
| 3901 | int |
| 3902 | sys_read (fildes, buf, nbyte) |
| 3903 | int fildes; |
| 3904 | char *buf; |
| 3905 | unsigned int nbyte; |
| 3906 | { |
| 3907 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); |
| 3908 | } |
| 3909 | |
| 3910 | #if 0 |
| 3911 | int |
| 3912 | sys_write (fildes, buf, nbyte) |
| 3913 | int fildes; |
| 3914 | char *buf; |
| 3915 | unsigned int nbyte; |
| 3916 | { |
| 3917 | register int nwrote, rtnval = 0; |
| 3918 | |
| 3919 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { |
| 3920 | nbyte -= nwrote; |
| 3921 | buf += nwrote; |
| 3922 | rtnval += nwrote; |
| 3923 | } |
| 3924 | if (nwrote < 0) |
| 3925 | return rtnval ? rtnval : -1; |
| 3926 | if ((nwrote = write (fildes, buf, nbyte)) < 0) |
| 3927 | return rtnval ? rtnval : -1; |
| 3928 | return (rtnval + nwrote); |
| 3929 | } |
| 3930 | #endif /* 0 */ |
| 3931 | |
| 3932 | /* |
| 3933 | * VAX/VMS VAX C RTL really loses. It insists that records |
| 3934 | * end with a newline (carriage return) character, and if they |
| 3935 | * don't it adds one (nice of it isn't it!) |
| 3936 | * |
| 3937 | * Thus we do this stupidity below. |
| 3938 | */ |
| 3939 | |
| 3940 | int |
| 3941 | sys_write (fildes, buf, nbytes) |
| 3942 | int fildes; |
| 3943 | char *buf; |
| 3944 | unsigned int nbytes; |
| 3945 | { |
| 3946 | register char *p; |
| 3947 | register char *e; |
| 3948 | int sum = 0; |
| 3949 | struct stat st; |
| 3950 | |
| 3951 | fstat (fildes, &st); |
| 3952 | p = buf; |
| 3953 | while (nbytes > 0) |
| 3954 | { |
| 3955 | int len, retval; |
| 3956 | |
| 3957 | /* Handle fixed-length files with carriage control. */ |
| 3958 | if (st.st_fab_rfm == FAB$C_FIX |
| 3959 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) |
| 3960 | { |
| 3961 | len = st.st_fab_mrs; |
| 3962 | retval = write (fildes, p, min (len, nbytes)); |
| 3963 | if (retval != len) |
| 3964 | return -1; |
| 3965 | retval++; /* This skips the implied carriage control */ |
| 3966 | } |
| 3967 | else |
| 3968 | { |
| 3969 | e = p + min (MAXIOSIZE, nbytes) - 1; |
| 3970 | while (*e != '\n' && e > p) e--; |
| 3971 | if (p == e) /* Ok.. so here we add a newline... sigh. */ |
| 3972 | e = p + min (MAXIOSIZE, nbytes) - 1; |
| 3973 | len = e + 1 - p; |
| 3974 | retval = write (fildes, p, len); |
| 3975 | if (retval != len) |
| 3976 | return -1; |
| 3977 | } |
| 3978 | p += retval; |
| 3979 | sum += retval; |
| 3980 | nbytes -= retval; |
| 3981 | } |
| 3982 | return sum; |
| 3983 | } |
| 3984 | |
| 3985 | /* Create file NEW copying its attributes from file OLD. If |
| 3986 | OLD is 0 or does not exist, create based on the value of |
| 3987 | vms_stmlf_recfm. */ |
| 3988 | |
| 3989 | /* Protection value the file should ultimately have. |
| 3990 | Set by create_copy_attrs, and use by rename_sansversions. */ |
| 3991 | static unsigned short int fab_final_pro; |
| 3992 | |
| 3993 | int |
| 3994 | creat_copy_attrs (old, new) |
| 3995 | char *old, *new; |
| 3996 | { |
| 3997 | struct FAB fab = cc$rms_fab; |
| 3998 | struct XABPRO xabpro; |
| 3999 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ |
| 4000 | extern int vms_stmlf_recfm; |
| 4001 | |
| 4002 | if (old) |
| 4003 | { |
| 4004 | fab.fab$b_fac = FAB$M_GET; |
| 4005 | fab.fab$l_fna = old; |
| 4006 | fab.fab$b_fns = strlen (old); |
| 4007 | fab.fab$l_xab = (char *) &xabpro; |
| 4008 | xabpro = cc$rms_xabpro; |
| 4009 | xabpro.xab$l_aclbuf = aclbuf; |
| 4010 | xabpro.xab$w_aclsiz = sizeof aclbuf; |
| 4011 | /* Call $OPEN to fill in the fab & xabpro fields. */ |
| 4012 | if (SYS$OPEN (&fab, 0, 0) & 1) |
| 4013 | { |
| 4014 | SYS$CLOSE (&fab, 0, 0); |
| 4015 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
| 4016 | if (xabpro.xab$w_acllen > 0) |
| 4017 | { |
| 4018 | if (xabpro.xab$w_acllen > sizeof aclbuf) |
| 4019 | /* If the acl buffer was too short, redo open with longer one. |
| 4020 | Wouldn't need to do this if there were some system imposed |
| 4021 | limit on the size of an ACL, but I can't find any such. */ |
| 4022 | { |
| 4023 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); |
| 4024 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; |
| 4025 | if (SYS$OPEN (&fab, 0, 0) & 1) |
| 4026 | SYS$CLOSE (&fab, 0, 0); |
| 4027 | else |
| 4028 | old = 0; |
| 4029 | } |
| 4030 | } |
| 4031 | else |
| 4032 | xabpro.xab$l_aclbuf = 0; |
| 4033 | } |
| 4034 | else |
| 4035 | old = 0; |
| 4036 | } |
| 4037 | fab.fab$l_fna = new; |
| 4038 | fab.fab$b_fns = strlen (new); |
| 4039 | if (!old) |
| 4040 | { |
| 4041 | fab.fab$l_xab = 0; |
| 4042 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; |
| 4043 | fab.fab$b_rat = FAB$M_CR; |
| 4044 | } |
| 4045 | |
| 4046 | /* Set the file protections such that we will be able to manipulate |
| 4047 | this file. Once we are done writing and renaming it, we will set |
| 4048 | the protections back. */ |
| 4049 | if (old) |
| 4050 | fab_final_pro = xabpro.xab$w_pro; |
| 4051 | else |
| 4052 | SYS$SETDFPROT (0, &fab_final_pro); |
| 4053 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
| 4054 | |
| 4055 | /* Create the new file with either default attrs or attrs copied |
| 4056 | from old file. */ |
| 4057 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) |
| 4058 | return -1; |
| 4059 | SYS$CLOSE (&fab, 0, 0); |
| 4060 | /* As this is a "replacement" for creat, return a file descriptor |
| 4061 | opened for writing. */ |
| 4062 | return open (new, O_WRONLY); |
| 4063 | } |
| 4064 | |
| 4065 | #ifdef creat |
| 4066 | #undef creat |
| 4067 | #include <varargs.h> |
| 4068 | #ifdef __GNUC__ |
| 4069 | #ifndef va_count |
| 4070 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) |
| 4071 | #endif |
| 4072 | #endif |
| 4073 | |
| 4074 | sys_creat (va_alist) |
| 4075 | va_dcl |
| 4076 | { |
| 4077 | va_list list_incrementer; |
| 4078 | char *name; |
| 4079 | int mode; |
| 4080 | int rfd; /* related file descriptor */ |
| 4081 | int fd; /* Our new file descriptor */ |
| 4082 | int count; |
| 4083 | struct stat st_buf; |
| 4084 | char rfm[12]; |
| 4085 | char rat[15]; |
| 4086 | char mrs[13]; |
| 4087 | char fsz[13]; |
| 4088 | extern int vms_stmlf_recfm; |
| 4089 | |
| 4090 | va_count (count); |
| 4091 | va_start (list_incrementer); |
| 4092 | name = va_arg (list_incrementer, char *); |
| 4093 | mode = va_arg (list_incrementer, int); |
| 4094 | if (count > 2) |
| 4095 | rfd = va_arg (list_incrementer, int); |
| 4096 | va_end (list_incrementer); |
| 4097 | if (count > 2) |
| 4098 | { |
| 4099 | /* Use information from the related file descriptor to set record |
| 4100 | format of the newly created file. */ |
| 4101 | fstat (rfd, &st_buf); |
| 4102 | switch (st_buf.st_fab_rfm) |
| 4103 | { |
| 4104 | case FAB$C_FIX: |
| 4105 | strcpy (rfm, "rfm = fix"); |
| 4106 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); |
| 4107 | strcpy (rat, "rat = "); |
| 4108 | if (st_buf.st_fab_rat & FAB$M_CR) |
| 4109 | strcat (rat, "cr"); |
| 4110 | else if (st_buf.st_fab_rat & FAB$M_FTN) |
| 4111 | strcat (rat, "ftn"); |
| 4112 | else if (st_buf.st_fab_rat & FAB$M_PRN) |
| 4113 | strcat (rat, "prn"); |
| 4114 | if (st_buf.st_fab_rat & FAB$M_BLK) |
| 4115 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) |
| 4116 | strcat (rat, ", blk"); |
| 4117 | else |
| 4118 | strcat (rat, "blk"); |
| 4119 | return creat (name, 0, rfm, rat, mrs); |
| 4120 | |
| 4121 | case FAB$C_VFC: |
| 4122 | strcpy (rfm, "rfm = vfc"); |
| 4123 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); |
| 4124 | strcpy (rat, "rat = "); |
| 4125 | if (st_buf.st_fab_rat & FAB$M_CR) |
| 4126 | strcat (rat, "cr"); |
| 4127 | else if (st_buf.st_fab_rat & FAB$M_FTN) |
| 4128 | strcat (rat, "ftn"); |
| 4129 | else if (st_buf.st_fab_rat & FAB$M_PRN) |
| 4130 | strcat (rat, "prn"); |
| 4131 | if (st_buf.st_fab_rat & FAB$M_BLK) |
| 4132 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) |
| 4133 | strcat (rat, ", blk"); |
| 4134 | else |
| 4135 | strcat (rat, "blk"); |
| 4136 | return creat (name, 0, rfm, rat, fsz); |
| 4137 | |
| 4138 | case FAB$C_STM: |
| 4139 | strcpy (rfm, "rfm = stm"); |
| 4140 | break; |
| 4141 | |
| 4142 | case FAB$C_STMCR: |
| 4143 | strcpy (rfm, "rfm = stmcr"); |
| 4144 | break; |
| 4145 | |
| 4146 | case FAB$C_STMLF: |
| 4147 | strcpy (rfm, "rfm = stmlf"); |
| 4148 | break; |
| 4149 | |
| 4150 | case FAB$C_UDF: |
| 4151 | strcpy (rfm, "rfm = udf"); |
| 4152 | break; |
| 4153 | |
| 4154 | case FAB$C_VAR: |
| 4155 | strcpy (rfm, "rfm = var"); |
| 4156 | break; |
| 4157 | } |
| 4158 | strcpy (rat, "rat = "); |
| 4159 | if (st_buf.st_fab_rat & FAB$M_CR) |
| 4160 | strcat (rat, "cr"); |
| 4161 | else if (st_buf.st_fab_rat & FAB$M_FTN) |
| 4162 | strcat (rat, "ftn"); |
| 4163 | else if (st_buf.st_fab_rat & FAB$M_PRN) |
| 4164 | strcat (rat, "prn"); |
| 4165 | if (st_buf.st_fab_rat & FAB$M_BLK) |
| 4166 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) |
| 4167 | strcat (rat, ", blk"); |
| 4168 | else |
| 4169 | strcat (rat, "blk"); |
| 4170 | } |
| 4171 | else |
| 4172 | { |
| 4173 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); |
| 4174 | strcpy (rat, "rat=cr"); |
| 4175 | } |
| 4176 | /* Until the VAX C RTL fixes the many bugs with modes, always use |
| 4177 | mode 0 to get the user's default protection. */ |
| 4178 | fd = creat (name, 0, rfm, rat); |
| 4179 | if (fd < 0 && errno == EEXIST) |
| 4180 | { |
| 4181 | if (unlink (name) < 0) |
| 4182 | report_file_error ("delete", build_string (name)); |
| 4183 | fd = creat (name, 0, rfm, rat); |
| 4184 | } |
| 4185 | return fd; |
| 4186 | } |
| 4187 | #endif /* creat */ |
| 4188 | |
| 4189 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ |
| 4190 | sys_fwrite (ptr, size, num, fp) |
| 4191 | register char * ptr; |
| 4192 | FILE * fp; |
| 4193 | { |
| 4194 | register int tot = num * size; |
| 4195 | |
| 4196 | while (tot--) |
| 4197 | fputc (*ptr++, fp); |
| 4198 | } |
| 4199 | |
| 4200 | /* |
| 4201 | * The VMS C library routine creat actually creates a new version of an |
| 4202 | * existing file rather than truncating the old version. There are times |
| 4203 | * when this is not the desired behavior, for instance, when writing an |
| 4204 | * auto save file (you only want one version), or when you don't have |
| 4205 | * write permission in the directory containing the file (but the file |
| 4206 | * itself is writable). Hence this routine, which is equivalent to |
| 4207 | * "close (creat (fn, 0));" on Unix if fn already exists. |
| 4208 | */ |
| 4209 | int |
| 4210 | vms_truncate (fn) |
| 4211 | char *fn; |
| 4212 | { |
| 4213 | struct FAB xfab = cc$rms_fab; |
| 4214 | struct RAB xrab = cc$rms_rab; |
| 4215 | int status; |
| 4216 | |
| 4217 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ |
| 4218 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ |
| 4219 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ |
| 4220 | xfab.fab$l_fna = fn; |
| 4221 | xfab.fab$b_fns = strlen (fn); |
| 4222 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ |
| 4223 | xfab.fab$b_dns = 2; |
| 4224 | xrab.rab$l_fab = &xfab; |
| 4225 | |
| 4226 | /* This gibberish opens the file, positions to the first record, and |
| 4227 | deletes all records from there until the end of file. */ |
| 4228 | if ((SYS$OPEN (&xfab) & 01) == 01) |
| 4229 | { |
| 4230 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
| 4231 | (SYS$FIND (&xrab) & 01) == 01 && |
| 4232 | (SYS$TRUNCATE (&xrab) & 01) == 01) |
| 4233 | status = 0; |
| 4234 | else |
| 4235 | status = -1; |
| 4236 | } |
| 4237 | else |
| 4238 | status = -1; |
| 4239 | SYS$CLOSE (&xfab); |
| 4240 | return status; |
| 4241 | } |
| 4242 | |
| 4243 | /* Define this symbol to actually read SYSUAF.DAT. This requires either |
| 4244 | SYSPRV or a readable SYSUAF.DAT. */ |
| 4245 | |
| 4246 | #ifdef READ_SYSUAF |
| 4247 | /* |
| 4248 | * getuaf.c |
| 4249 | * |
| 4250 | * Routine to read the VMS User Authorization File and return |
| 4251 | * a specific user's record. |
| 4252 | */ |
| 4253 | |
| 4254 | static struct UAF retuaf; |
| 4255 | |
| 4256 | struct UAF * |
| 4257 | get_uaf_name (uname) |
| 4258 | char * uname; |
| 4259 | { |
| 4260 | register status; |
| 4261 | struct FAB uaf_fab; |
| 4262 | struct RAB uaf_rab; |
| 4263 | |
| 4264 | uaf_fab = cc$rms_fab; |
| 4265 | uaf_rab = cc$rms_rab; |
| 4266 | /* initialize fab fields */ |
| 4267 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; |
| 4268 | uaf_fab.fab$b_fns = 21; |
| 4269 | uaf_fab.fab$b_fac = FAB$M_GET; |
| 4270 | uaf_fab.fab$b_org = FAB$C_IDX; |
| 4271 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; |
| 4272 | /* initialize rab fields */ |
| 4273 | uaf_rab.rab$l_fab = &uaf_fab; |
| 4274 | /* open the User Authorization File */ |
| 4275 | status = SYS$OPEN (&uaf_fab); |
| 4276 | if (!(status&1)) |
| 4277 | { |
| 4278 | errno = EVMSERR; |
| 4279 | vaxc$errno = status; |
| 4280 | return 0; |
| 4281 | } |
| 4282 | status = SYS$CONNECT (&uaf_rab); |
| 4283 | if (!(status&1)) |
| 4284 | { |
| 4285 | errno = EVMSERR; |
| 4286 | vaxc$errno = status; |
| 4287 | return 0; |
| 4288 | } |
| 4289 | /* read the requested record - index is in uname */ |
| 4290 | uaf_rab.rab$l_kbf = uname; |
| 4291 | uaf_rab.rab$b_ksz = strlen (uname); |
| 4292 | uaf_rab.rab$b_rac = RAB$C_KEY; |
| 4293 | uaf_rab.rab$l_ubf = (char *)&retuaf; |
| 4294 | uaf_rab.rab$w_usz = sizeof retuaf; |
| 4295 | status = SYS$GET (&uaf_rab); |
| 4296 | if (!(status&1)) |
| 4297 | { |
| 4298 | errno = EVMSERR; |
| 4299 | vaxc$errno = status; |
| 4300 | return 0; |
| 4301 | } |
| 4302 | /* close the User Authorization File */ |
| 4303 | status = SYS$DISCONNECT (&uaf_rab); |
| 4304 | if (!(status&1)) |
| 4305 | { |
| 4306 | errno = EVMSERR; |
| 4307 | vaxc$errno = status; |
| 4308 | return 0; |
| 4309 | } |
| 4310 | status = SYS$CLOSE (&uaf_fab); |
| 4311 | if (!(status&1)) |
| 4312 | { |
| 4313 | errno = EVMSERR; |
| 4314 | vaxc$errno = status; |
| 4315 | return 0; |
| 4316 | } |
| 4317 | return &retuaf; |
| 4318 | } |
| 4319 | |
| 4320 | struct UAF * |
| 4321 | get_uaf_uic (uic) |
| 4322 | unsigned long uic; |
| 4323 | { |
| 4324 | register status; |
| 4325 | struct FAB uaf_fab; |
| 4326 | struct RAB uaf_rab; |
| 4327 | |
| 4328 | uaf_fab = cc$rms_fab; |
| 4329 | uaf_rab = cc$rms_rab; |
| 4330 | /* initialize fab fields */ |
| 4331 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; |
| 4332 | uaf_fab.fab$b_fns = 21; |
| 4333 | uaf_fab.fab$b_fac = FAB$M_GET; |
| 4334 | uaf_fab.fab$b_org = FAB$C_IDX; |
| 4335 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; |
| 4336 | /* initialize rab fields */ |
| 4337 | uaf_rab.rab$l_fab = &uaf_fab; |
| 4338 | /* open the User Authorization File */ |
| 4339 | status = SYS$OPEN (&uaf_fab); |
| 4340 | if (!(status&1)) |
| 4341 | { |
| 4342 | errno = EVMSERR; |
| 4343 | vaxc$errno = status; |
| 4344 | return 0; |
| 4345 | } |
| 4346 | status = SYS$CONNECT (&uaf_rab); |
| 4347 | if (!(status&1)) |
| 4348 | { |
| 4349 | errno = EVMSERR; |
| 4350 | vaxc$errno = status; |
| 4351 | return 0; |
| 4352 | } |
| 4353 | /* read the requested record - index is in uic */ |
| 4354 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ |
| 4355 | uaf_rab.rab$l_kbf = (char *) &uic; |
| 4356 | uaf_rab.rab$b_ksz = sizeof uic; |
| 4357 | uaf_rab.rab$b_rac = RAB$C_KEY; |
| 4358 | uaf_rab.rab$l_ubf = (char *)&retuaf; |
| 4359 | uaf_rab.rab$w_usz = sizeof retuaf; |
| 4360 | status = SYS$GET (&uaf_rab); |
| 4361 | if (!(status&1)) |
| 4362 | { |
| 4363 | errno = EVMSERR; |
| 4364 | vaxc$errno = status; |
| 4365 | return 0; |
| 4366 | } |
| 4367 | /* close the User Authorization File */ |
| 4368 | status = SYS$DISCONNECT (&uaf_rab); |
| 4369 | if (!(status&1)) |
| 4370 | { |
| 4371 | errno = EVMSERR; |
| 4372 | vaxc$errno = status; |
| 4373 | return 0; |
| 4374 | } |
| 4375 | status = SYS$CLOSE (&uaf_fab); |
| 4376 | if (!(status&1)) |
| 4377 | { |
| 4378 | errno = EVMSERR; |
| 4379 | vaxc$errno = status; |
| 4380 | return 0; |
| 4381 | } |
| 4382 | return &retuaf; |
| 4383 | } |
| 4384 | |
| 4385 | static struct passwd retpw; |
| 4386 | |
| 4387 | struct passwd * |
| 4388 | cnv_uaf_pw (up) |
| 4389 | struct UAF * up; |
| 4390 | { |
| 4391 | char * ptr; |
| 4392 | |
| 4393 | /* copy these out first because if the username is 32 chars, the next |
| 4394 | section will overwrite the first byte of the UIC */ |
| 4395 | retpw.pw_uid = up->uaf$w_mem; |
| 4396 | retpw.pw_gid = up->uaf$w_grp; |
| 4397 | |
| 4398 | /* I suppose this is not the best sytle, to possibly overwrite one |
| 4399 | byte beyond the end of the field, but what the heck... */ |
| 4400 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; |
| 4401 | while (ptr[-1] == ' ') |
| 4402 | ptr--; |
| 4403 | *ptr = '\0'; |
| 4404 | strcpy (retpw.pw_name, up->uaf$t_username); |
| 4405 | |
| 4406 | /* the rest of these are counted ascii strings */ |
| 4407 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); |
| 4408 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; |
| 4409 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); |
| 4410 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; |
| 4411 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); |
| 4412 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; |
| 4413 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); |
| 4414 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; |
| 4415 | |
| 4416 | return &retpw; |
| 4417 | } |
| 4418 | #else /* not READ_SYSUAF */ |
| 4419 | static struct passwd retpw; |
| 4420 | #endif /* not READ_SYSUAF */ |
| 4421 | |
| 4422 | struct passwd * |
| 4423 | getpwnam (name) |
| 4424 | char * name; |
| 4425 | { |
| 4426 | #ifdef READ_SYSUAF |
| 4427 | struct UAF *up; |
| 4428 | #else |
| 4429 | char * user; |
| 4430 | char * dir; |
| 4431 | unsigned char * full; |
| 4432 | #endif /* READ_SYSUAF */ |
| 4433 | char *ptr = name; |
| 4434 | |
| 4435 | while (*ptr) |
| 4436 | { |
| 4437 | if ('a' <= *ptr && *ptr <= 'z') |
| 4438 | *ptr -= 040; |
| 4439 | ptr++; |
| 4440 | } |
| 4441 | #ifdef READ_SYSUAF |
| 4442 | if (!(up = get_uaf_name (name))) |
| 4443 | return 0; |
| 4444 | return cnv_uaf_pw (up); |
| 4445 | #else |
| 4446 | if (strcmp (name, getenv ("USER")) == 0) |
| 4447 | { |
| 4448 | retpw.pw_uid = getuid (); |
| 4449 | retpw.pw_gid = getgid (); |
| 4450 | strcpy (retpw.pw_name, name); |
| 4451 | if (full = egetenv ("FULLNAME")) |
| 4452 | strcpy (retpw.pw_gecos, full); |
| 4453 | else |
| 4454 | *retpw.pw_gecos = '\0'; |
| 4455 | strcpy (retpw.pw_dir, egetenv ("HOME")); |
| 4456 | *retpw.pw_shell = '\0'; |
| 4457 | return &retpw; |
| 4458 | } |
| 4459 | else |
| 4460 | return 0; |
| 4461 | #endif /* not READ_SYSUAF */ |
| 4462 | } |
| 4463 | |
| 4464 | struct passwd * |
| 4465 | getpwuid (uid) |
| 4466 | unsigned long uid; |
| 4467 | { |
| 4468 | #ifdef READ_SYSUAF |
| 4469 | struct UAF * up; |
| 4470 | |
| 4471 | if (!(up = get_uaf_uic (uid))) |
| 4472 | return 0; |
| 4473 | return cnv_uaf_pw (up); |
| 4474 | #else |
| 4475 | if (uid == sys_getuid ()) |
| 4476 | return getpwnam (egetenv ("USER")); |
| 4477 | else |
| 4478 | return 0; |
| 4479 | #endif /* not READ_SYSUAF */ |
| 4480 | } |
| 4481 | |
| 4482 | /* return total address space available to the current process. This is |
| 4483 | the sum of the current p0 size, p1 size and free page table entries |
| 4484 | available. */ |
| 4485 | vlimit () |
| 4486 | { |
| 4487 | int item_code; |
| 4488 | unsigned long free_pages; |
| 4489 | unsigned long frep0va; |
| 4490 | unsigned long frep1va; |
| 4491 | register status; |
| 4492 | |
| 4493 | item_code = JPI$_FREPTECNT; |
| 4494 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) |
| 4495 | { |
| 4496 | errno = EVMSERR; |
| 4497 | vaxc$errno = status; |
| 4498 | return -1; |
| 4499 | } |
| 4500 | free_pages *= 512; |
| 4501 | |
| 4502 | item_code = JPI$_FREP0VA; |
| 4503 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) |
| 4504 | { |
| 4505 | errno = EVMSERR; |
| 4506 | vaxc$errno = status; |
| 4507 | return -1; |
| 4508 | } |
| 4509 | item_code = JPI$_FREP1VA; |
| 4510 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) |
| 4511 | { |
| 4512 | errno = EVMSERR; |
| 4513 | vaxc$errno = status; |
| 4514 | return -1; |
| 4515 | } |
| 4516 | |
| 4517 | return free_pages + frep0va + (0x7fffffff - frep1va); |
| 4518 | } |
| 4519 | |
| 4520 | define_logical_name (varname, string) |
| 4521 | char *varname; |
| 4522 | char *string; |
| 4523 | { |
| 4524 | struct dsc$descriptor_s strdsc = |
| 4525 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; |
| 4526 | struct dsc$descriptor_s envdsc = |
| 4527 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; |
| 4528 | struct dsc$descriptor_s lnmdsc = |
| 4529 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; |
| 4530 | |
| 4531 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); |
| 4532 | } |
| 4533 | |
| 4534 | delete_logical_name (varname) |
| 4535 | char *varname; |
| 4536 | { |
| 4537 | struct dsc$descriptor_s envdsc = |
| 4538 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; |
| 4539 | struct dsc$descriptor_s lnmdsc = |
| 4540 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; |
| 4541 | |
| 4542 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); |
| 4543 | } |
| 4544 | |
| 4545 | ulimit () |
| 4546 | {} |
| 4547 | |
| 4548 | setpgrp () |
| 4549 | {} |
| 4550 | |
| 4551 | execvp () |
| 4552 | { |
| 4553 | error ("execvp system call not implemented"); |
| 4554 | } |
| 4555 | |
| 4556 | int |
| 4557 | rename (from, to) |
| 4558 | char *from, *to; |
| 4559 | { |
| 4560 | int status; |
| 4561 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; |
| 4562 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; |
| 4563 | char from_esn[NAM$C_MAXRSS]; |
| 4564 | char to_esn[NAM$C_MAXRSS]; |
| 4565 | |
| 4566 | from_fab.fab$l_fna = from; |
| 4567 | from_fab.fab$b_fns = strlen (from); |
| 4568 | from_fab.fab$l_nam = &from_nam; |
| 4569 | from_fab.fab$l_fop = FAB$M_NAM; |
| 4570 | |
| 4571 | from_nam.nam$l_esa = from_esn; |
| 4572 | from_nam.nam$b_ess = sizeof from_esn; |
| 4573 | |
| 4574 | to_fab.fab$l_fna = to; |
| 4575 | to_fab.fab$b_fns = strlen (to); |
| 4576 | to_fab.fab$l_nam = &to_nam; |
| 4577 | to_fab.fab$l_fop = FAB$M_NAM; |
| 4578 | |
| 4579 | to_nam.nam$l_esa = to_esn; |
| 4580 | to_nam.nam$b_ess = sizeof to_esn; |
| 4581 | |
| 4582 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); |
| 4583 | |
| 4584 | if (status & 1) |
| 4585 | return 0; |
| 4586 | else |
| 4587 | { |
| 4588 | if (status == RMS$_DEV) |
| 4589 | errno = EXDEV; |
| 4590 | else |
| 4591 | errno = EVMSERR; |
| 4592 | vaxc$errno = status; |
| 4593 | return -1; |
| 4594 | } |
| 4595 | } |
| 4596 | |
| 4597 | /* This function renames a file like `rename', but it strips |
| 4598 | the version number from the "to" filename, such that the "to" file is |
| 4599 | will always be a new version. It also sets the file protection once it is |
| 4600 | finished. The protection that we will use is stored in fab_final_pro, |
| 4601 | and was set when we did a creat_copy_attrs to create the file that we |
| 4602 | are renaming. |
| 4603 | |
| 4604 | We could use the chmod function, but Eunichs uses 3 bits per user category |
| 4605 | to describe the protection, and VMS uses 4 (write and delete are separate |
| 4606 | bits). To maintain portability, the VMS implementation of `chmod' wires |
| 4607 | the W and D bits together. */ |
| 4608 | |
| 4609 | |
| 4610 | static struct fibdef fib; /* We need this initialized to zero */ |
| 4611 | char vms_file_written[NAM$C_MAXRSS]; |
| 4612 | |
| 4613 | int |
| 4614 | rename_sans_version (from,to) |
| 4615 | char *from, *to; |
| 4616 | { |
| 4617 | short int chan; |
| 4618 | int stat; |
| 4619 | short int iosb[4]; |
| 4620 | int status; |
| 4621 | struct FAB to_fab = cc$rms_fab; |
| 4622 | struct NAM to_nam = cc$rms_nam; |
| 4623 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; |
| 4624 | struct dsc$descriptor fib_attr[2] |
| 4625 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; |
| 4626 | char to_esn[NAM$C_MAXRSS]; |
| 4627 | |
| 4628 | $DESCRIPTOR (disk,to_esn); |
| 4629 | |
| 4630 | to_fab.fab$l_fna = to; |
| 4631 | to_fab.fab$b_fns = strlen (to); |
| 4632 | to_fab.fab$l_nam = &to_nam; |
| 4633 | to_fab.fab$l_fop = FAB$M_NAM; |
| 4634 | |
| 4635 | to_nam.nam$l_esa = to_esn; |
| 4636 | to_nam.nam$b_ess = sizeof to_esn; |
| 4637 | |
| 4638 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ |
| 4639 | |
| 4640 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) |
| 4641 | *(to_nam.nam$l_ver) = '\0'; |
| 4642 | |
| 4643 | stat = rename (from, to_esn); |
| 4644 | if (stat < 0) |
| 4645 | return stat; |
| 4646 | |
| 4647 | strcpy (vms_file_written, to_esn); |
| 4648 | |
| 4649 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ |
| 4650 | to_fab.fab$b_fns = strlen (vms_file_written); |
| 4651 | |
| 4652 | /* Now set the file protection to the correct value */ |
| 4653 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
| 4654 | |
| 4655 | /* Copy these fields into the fib */ |
| 4656 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; |
| 4657 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; |
| 4658 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; |
| 4659 | |
| 4660 | SYS$CLOSE (&to_fab, 0, 0); |
| 4661 | |
| 4662 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
| 4663 | if (!stat) |
| 4664 | LIB$SIGNAL (stat); |
| 4665 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, |
| 4666 | 0, 0, 0, &fib_attr, 0); |
| 4667 | if (!stat) |
| 4668 | LIB$SIGNAL (stat); |
| 4669 | stat = SYS$DASSGN (chan); |
| 4670 | if (!stat) |
| 4671 | LIB$SIGNAL (stat); |
| 4672 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
| 4673 | return 0; |
| 4674 | } |
| 4675 | |
| 4676 | link (file, new) |
| 4677 | char * file, * new; |
| 4678 | { |
| 4679 | register status; |
| 4680 | struct FAB fab; |
| 4681 | struct NAM nam; |
| 4682 | unsigned short fid[3]; |
| 4683 | char esa[NAM$C_MAXRSS]; |
| 4684 | |
| 4685 | fab = cc$rms_fab; |
| 4686 | fab.fab$l_fop = FAB$M_OFP; |
| 4687 | fab.fab$l_fna = file; |
| 4688 | fab.fab$b_fns = strlen (file); |
| 4689 | fab.fab$l_nam = &nam; |
| 4690 | |
| 4691 | nam = cc$rms_nam; |
| 4692 | nam.nam$l_esa = esa; |
| 4693 | nam.nam$b_ess = NAM$C_MAXRSS; |
| 4694 | |
| 4695 | status = SYS$PARSE (&fab); |
| 4696 | if ((status & 1) == 0) |
| 4697 | { |
| 4698 | errno = EVMSERR; |
| 4699 | vaxc$errno = status; |
| 4700 | return -1; |
| 4701 | } |
| 4702 | status = SYS$SEARCH (&fab); |
| 4703 | if ((status & 1) == 0) |
| 4704 | { |
| 4705 | errno = EVMSERR; |
| 4706 | vaxc$errno = status; |
| 4707 | return -1; |
| 4708 | } |
| 4709 | |
| 4710 | fid[0] = nam.nam$w_fid[0]; |
| 4711 | fid[1] = nam.nam$w_fid[1]; |
| 4712 | fid[2] = nam.nam$w_fid[2]; |
| 4713 | |
| 4714 | fab.fab$l_fna = new; |
| 4715 | fab.fab$b_fns = strlen (new); |
| 4716 | |
| 4717 | status = SYS$PARSE (&fab); |
| 4718 | if ((status & 1) == 0) |
| 4719 | { |
| 4720 | errno = EVMSERR; |
| 4721 | vaxc$errno = status; |
| 4722 | return -1; |
| 4723 | } |
| 4724 | |
| 4725 | nam.nam$w_fid[0] = fid[0]; |
| 4726 | nam.nam$w_fid[1] = fid[1]; |
| 4727 | nam.nam$w_fid[2] = fid[2]; |
| 4728 | |
| 4729 | nam.nam$l_esa = nam.nam$l_name; |
| 4730 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; |
| 4731 | |
| 4732 | status = SYS$ENTER (&fab); |
| 4733 | if ((status & 1) == 0) |
| 4734 | { |
| 4735 | errno = EVMSERR; |
| 4736 | vaxc$errno = status; |
| 4737 | return -1; |
| 4738 | } |
| 4739 | |
| 4740 | return 0; |
| 4741 | } |
| 4742 | |
| 4743 | croak (badfunc) |
| 4744 | char *badfunc; |
| 4745 | { |
| 4746 | printf ("%s not yet implemented\r\n", badfunc); |
| 4747 | reset_sys_modes (); |
| 4748 | exit (1); |
| 4749 | } |
| 4750 | |
| 4751 | long |
| 4752 | random () |
| 4753 | { |
| 4754 | /* Arrange to return a range centered on zero. */ |
| 4755 | return rand () - (1 << 30); |
| 4756 | } |
| 4757 | |
| 4758 | srandom (seed) |
| 4759 | { |
| 4760 | srand (seed); |
| 4761 | } |
| 4762 | #endif /* VMS */ |
| 4763 | \f |
| 4764 | #ifdef AIX |
| 4765 | |
| 4766 | /* Called from init_sys_modes. */ |
| 4767 | hft_init () |
| 4768 | { |
| 4769 | int junk; |
| 4770 | |
| 4771 | /* If we're not on an HFT we shouldn't do any of this. We determine |
| 4772 | if we are on an HFT by trying to get an HFT error code. If this |
| 4773 | call fails, we're not on an HFT. */ |
| 4774 | #ifdef IBMR2AIX |
| 4775 | if (ioctl (0, HFQERROR, &junk) < 0) |
| 4776 | return; |
| 4777 | #else /* not IBMR2AIX */ |
| 4778 | if (ioctl (0, HFQEIO, 0) < 0) |
| 4779 | return; |
| 4780 | #endif /* not IBMR2AIX */ |
| 4781 | |
| 4782 | /* On AIX the default hft keyboard mapping uses backspace rather than delete |
| 4783 | as the rubout key's ASCII code. Here this is changed. The bug is that |
| 4784 | there's no way to determine the old mapping, so in reset_sys_modes |
| 4785 | we need to assume that the normal map had been present. Of course, this |
| 4786 | code also doesn't help if on a terminal emulator which doesn't understand |
| 4787 | HFT VTD's. */ |
| 4788 | { |
| 4789 | struct hfbuf buf; |
| 4790 | struct hfkeymap keymap; |
| 4791 | |
| 4792 | buf.hf_bufp = (char *)&keymap; |
| 4793 | buf.hf_buflen = sizeof (keymap); |
| 4794 | keymap.hf_nkeys = 2; |
| 4795 | keymap.hfkey[0].hf_kpos = 15; |
| 4796 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; |
| 4797 | #ifdef IBMR2AIX |
| 4798 | keymap.hfkey[0].hf_keyidh = '<'; |
| 4799 | #else /* not IBMR2AIX */ |
| 4800 | keymap.hfkey[0].hf_page = '<'; |
| 4801 | #endif /* not IBMR2AIX */ |
| 4802 | keymap.hfkey[0].hf_char = 127; |
| 4803 | keymap.hfkey[1].hf_kpos = 15; |
| 4804 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; |
| 4805 | #ifdef IBMR2AIX |
| 4806 | keymap.hfkey[1].hf_keyidh = '<'; |
| 4807 | #else /* not IBMR2AIX */ |
| 4808 | keymap.hfkey[1].hf_page = '<'; |
| 4809 | #endif /* not IBMR2AIX */ |
| 4810 | keymap.hfkey[1].hf_char = 127; |
| 4811 | hftctl (0, HFSKBD, &buf); |
| 4812 | } |
| 4813 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly |
| 4814 | at times. */ |
| 4815 | line_ins_del_ok = char_ins_del_ok = 0; |
| 4816 | } |
| 4817 | |
| 4818 | /* Reset the rubout key to backspace. */ |
| 4819 | |
| 4820 | hft_reset () |
| 4821 | { |
| 4822 | struct hfbuf buf; |
| 4823 | struct hfkeymap keymap; |
| 4824 | int junk; |
| 4825 | |
| 4826 | #ifdef IBMR2AIX |
| 4827 | if (ioctl (0, HFQERROR, &junk) < 0) |
| 4828 | return; |
| 4829 | #else /* not IBMR2AIX */ |
| 4830 | if (ioctl (0, HFQEIO, 0) < 0) |
| 4831 | return; |
| 4832 | #endif /* not IBMR2AIX */ |
| 4833 | |
| 4834 | buf.hf_bufp = (char *)&keymap; |
| 4835 | buf.hf_buflen = sizeof (keymap); |
| 4836 | keymap.hf_nkeys = 2; |
| 4837 | keymap.hfkey[0].hf_kpos = 15; |
| 4838 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; |
| 4839 | #ifdef IBMR2AIX |
| 4840 | keymap.hfkey[0].hf_keyidh = '<'; |
| 4841 | #else /* not IBMR2AIX */ |
| 4842 | keymap.hfkey[0].hf_page = '<'; |
| 4843 | #endif /* not IBMR2AIX */ |
| 4844 | keymap.hfkey[0].hf_char = 8; |
| 4845 | keymap.hfkey[1].hf_kpos = 15; |
| 4846 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; |
| 4847 | #ifdef IBMR2AIX |
| 4848 | keymap.hfkey[1].hf_keyidh = '<'; |
| 4849 | #else /* not IBMR2AIX */ |
| 4850 | keymap.hfkey[1].hf_page = '<'; |
| 4851 | #endif /* not IBMR2AIX */ |
| 4852 | keymap.hfkey[1].hf_char = 8; |
| 4853 | hftctl (0, HFSKBD, &buf); |
| 4854 | } |
| 4855 | |
| 4856 | #endif /* AIX */ |