Mercurial > hg > xemacs-beta
annotate src/sysdep.c @ 5464:e79916901603 r21-5-30
XEmacs 21.5.30 "garlic" is released.
| author | Stephen J. Turnbull <stephen@xemacs.org> |
|---|---|
| date | Wed, 27 Apr 2011 01:24:28 +0900 |
| parents | d4f666cda5e6 |
| children | 308d34e9f07d |
| rev | line source |
|---|---|
| 428 | 1 /* Interfaces to system-dependent kernel and library entries. |
| 2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1995 Tinker Systems. | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
4 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2010 Ben Wing. |
| 428 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
| 8 XEmacs is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 10 Free Software Foundation; either version 2, or (at your option) any | |
| 11 later version. | |
| 12 | |
| 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with XEmacs; see the file COPYING. If not, write to | |
| 20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 21 Boston, MA 02111-1307, USA. */ | |
| 22 | |
| 771 | 23 |
| 428 | 24 /* Synched up with: FSF 19.30 except for some Windows-NT crap. */ |
| 25 | |
| 771 | 26 /* Authorship: |
| 27 | |
| 28 Current primary author: Various | |
| 29 | |
| 30 Originally from FSF. Major changes at various times. | |
| 31 Substantially cleaned up by Ben Wing, Dec. 1994 / Jan. 1995. | |
| 32 SIGIO stuff ripped apart and redone by Ben Wing. (during 19.14 devel?) | |
| 33 Signal stuff totally redone by Ben Wing. (during 19.14 devel? that would | |
| 34 be Dec 1995 - Apr 1996.) | |
| 35 Controlling terminal stuff redone by Ben Wing for 19.13. | |
| 36 System call encapsulation stuff written by Ben Wing for 19.12. (1995) | |
| 37 Ripped up and redone avoiding preprocessor tricks Aug - Sep 2001 during | |
| 38 Mule-on-Windows development. | |
| 39 */ | |
| 428 | 40 |
| 41 #include <config.h> | |
| 42 #include "lisp.h" | |
| 43 | |
| 44 /* ------------------------------- */ | |
| 45 /* basic includes */ | |
| 46 /* ------------------------------- */ | |
| 47 | |
| 800 | 48 |
| 49 #include "buffer.h" | |
| 872 | 50 #include "device-impl.h" |
| 800 | 51 #include "events.h" |
| 52 #include "frame.h" | |
| 53 #include "process.h" | |
| 54 #include "redisplay.h" | |
| 55 #include "sysdep.h" | |
| 56 #include "window.h" | |
| 57 | |
| 428 | 58 #ifdef HAVE_TTY |
| 872 | 59 #include "console-tty-impl.h" |
| 428 | 60 #else |
| 61 #endif /* HAVE_TTY */ | |
| 62 | |
| 872 | 63 #include "console-stream-impl.h" |
| 442 | 64 #ifdef WIN32_NATIVE |
| 771 | 65 #include "syswindows.h" |
| 428 | 66 #endif |
| 67 | |
| 800 | 68 #include "sysdir.h" |
| 69 #include "sysfile.h" | |
| 70 #include "sysproc.h" | |
| 71 #include "syspwd.h" | |
| 859 | 72 #include "syssignal.h" |
| 800 | 73 #include "systime.h" |
| 74 #include "systty.h" | |
| 75 #include "syswait.h" | |
| 76 | |
| 77 #include <setjmp.h> | |
| 78 | |
| 79 | |
| 428 | 80 /* ------------------------------- */ |
| 81 /* TTY definitions */ | |
| 82 /* ------------------------------- */ | |
| 83 | |
| 84 #ifdef USG | |
| 85 #include <sys/utsname.h> | |
| 86 #endif /* USG */ | |
| 87 | |
| 88 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ | |
| 89 #ifndef LPASS8 | |
| 90 #define LPASS8 0 | |
| 91 #endif | |
| 92 | |
| 93 #ifndef HAVE_H_ERRNO | |
| 94 int h_errno; | |
| 95 #endif | |
| 96 | |
| 97 #ifdef HAVE_TTY | |
| 98 | |
| 99 static int baud_convert[] = | |
| 100 #ifdef BAUD_CONVERT | |
| 101 BAUD_CONVERT; | |
| 102 #else | |
| 103 { | |
| 104 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
| 105 1800, 2400, 4800, 9600, 19200, 38400 | |
| 106 }; | |
| 107 #endif | |
| 108 | |
| 109 #endif | |
| 110 | |
| 111 | |
| 112 /************************************************************************/ | |
| 113 /* subprocess control */ | |
| 114 /************************************************************************/ | |
| 115 | |
| 853 | 116 #ifdef NEED_SYNC_PROCESS_CODE |
| 117 | |
| 118 /* True iff we are about to fork off a synchronous process or if we | |
| 119 are waiting for it. */ | |
| 120 volatile int synch_process_alive; | |
| 121 | |
| 122 /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
| 123 const char *synch_process_death; | |
| 124 | |
| 125 /* If synch_process_death is zero, | |
| 126 this is exit code of synchronous subprocess. */ | |
| 127 int synch_process_retcode; | |
| 128 | |
| 129 #endif /* NEED_SYNC_PROCESS_CODE */ | |
| 130 | |
| 428 | 131 #ifdef HAVE_TTY |
| 132 | |
| 133 #ifdef SIGTSTP | |
| 134 | |
| 135 /* Arrange for character C to be read as the next input from | |
| 136 the terminal. */ | |
| 137 void | |
| 2311 | 138 stuff_char (struct console *con, |
| 139 #ifdef TIOCSTI | |
| 140 int c | |
| 141 #else | |
| 142 int UNUSED (c) | |
| 143 #endif | |
| 144 ) | |
| 428 | 145 { |
| 146 int input_fd; | |
| 147 | |
| 148 assert (CONSOLE_TTY_P (con)); | |
| 149 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
| 150 /* Should perhaps error if in batch mode */ | |
| 151 #ifdef TIOCSTI | |
| 152 ioctl (input_fd, TIOCSTI, &c); | |
| 153 #else /* no TIOCSTI */ | |
| 563 | 154 invalid_operation ("Cannot stuff terminal input characters in this version of Unix.", Qunbound); |
| 428 | 155 #endif /* no TIOCSTI */ |
| 156 } | |
| 157 | |
| 158 #endif /* SIGTSTP */ | |
| 159 | |
| 160 #endif /* HAVE_TTY */ | |
| 161 | |
| 162 void | |
| 2311 | 163 set_exclusive_use ( |
| 164 #ifdef FIOCLEX | |
| 165 int fd | |
| 166 #else | |
| 167 int UNUSED (fd) | |
| 168 #endif | |
| 169 ) | |
| 428 | 170 { |
| 171 #ifdef FIOCLEX | |
| 172 ioctl (fd, FIOCLEX, 0); | |
| 173 #endif | |
| 174 /* Ok to do nothing if this feature does not exist */ | |
| 175 } | |
| 176 | |
| 177 void | |
| 2340 | 178 set_descriptor_non_blocking ( |
| 179 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX) || defined (F_SETFL) | |
| 180 int fd | |
| 181 #else | |
| 182 int UNUSED (fd) | |
| 183 #endif | |
| 184 ) | |
| 428 | 185 { |
| 186 /* Stride people say it's a mystery why this is needed | |
| 187 as well as the O_NDELAY, but that it fails without this. */ | |
| 188 /* For AIX: Apparently need this for non-blocking reads on sockets. | |
| 189 It seems that O_NONBLOCK applies only to FIFOs? From | |
| 190 lowry@watson.ibm.com (Andy Lowry). */ | |
| 191 /* #### Should this be conditionalized on FIONBIO? */ | |
| 872 | 192 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX) |
| 428 | 193 { |
| 194 int one = 1; | |
| 195 ioctl (fd, FIONBIO, &one); | |
| 196 } | |
| 197 #endif | |
| 198 | |
| 199 #ifdef F_SETFL | |
| 200 fcntl (fd, F_SETFL, O_NONBLOCK); | |
| 201 #endif | |
| 202 } | |
| 203 | |
| 853 | 204 #ifdef NEED_SYNC_PROCESS_CODE /* #### Used only on super-ancient systems */ |
| 205 | |
| 206 static void | |
| 814 | 207 wait_for_termination (int pid) |
| 428 | 208 { |
| 209 /* #### With the new improved SIGCHLD handling stuff, there is much | |
| 210 less danger of race conditions and some of the comments below | |
| 211 don't apply. This should be updated. */ | |
| 212 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
213 #if defined (HAVE_WAITPID) |
| 428 | 214 /* Note that, whenever any subprocess terminates (asynch. or synch.), |
| 215 the SIGCHLD handler will be called and it will call wait(). Thus | |
| 216 we cannot just call wait() ourselves, and we can't block SIGCHLD | |
| 217 and then call wait(), because then if an asynch. process dies | |
| 218 while we're waiting for our synch. process, Emacs will never | |
| 219 notice that the asynch. process died. | |
| 220 | |
| 221 So, the general approach we take is to repeatedly block until a | |
| 222 signal arrives, and then check if our process died using kill | |
| 223 (pid, 0). (We could also check the value of `synch_process_alive', | |
| 224 since the SIGCHLD handler will reset that and we know that we're | |
| 225 only being called on synchronous processes, but this approach is | |
| 226 safer. I don't trust the proper delivery of SIGCHLD. | |
| 227 | |
| 228 Note also that we cannot use any form of waitpid(). A loop with | |
| 229 WNOHANG will chew up CPU time; better to use sleep(). A loop | |
| 230 without WNOWAIT will screw up the SIGCHLD handler (actually this | |
| 231 is not true, if you duplicate the exit-status-reaping code; see | |
| 232 below). A loop with WNOWAIT will result in a race condition if | |
| 233 the process terminates between the process-status check and the | |
| 234 call to waitpid(). */ | |
| 235 | |
| 236 /* Formerly, immediate_quit was set around this function call, but | |
| 237 that could lead to problems if the QUIT happened when SIGCHLD was | |
| 238 blocked -- it would remain blocked. Yet another reason why | |
| 239 immediate_quit is a bad idea. In any case, there is no reason to | |
| 240 resort to this because either the SIGIO or the SIGALRM will stop | |
| 241 the block in EMACS_WAIT_FOR_SIGNAL(). */ | |
| 242 | |
| 243 /* Apparently there are bugs on some systems with the second method | |
| 244 used below (the EMACS_BLOCK_SIGNAL method), whereby zombie | |
| 245 processes get left around. It appears in those cases that the | |
| 246 SIGCHLD handler is never getting invoked. It's not clear whether | |
| 247 this is an Emacs bug or a kernel bug or both: on HPUX this | |
| 248 problem is observed only with XEmacs, but under Solaris 2.4 all | |
| 249 sorts of different programs have problems with zombies. The | |
| 250 method we use here does not require a working SIGCHLD (but will | |
| 251 not break if it is working), and should be safe. */ | |
| 252 /* | |
| 253 We use waitpid(), contrary to the remarks above. There is no | |
| 254 race condition, because the three situations when sigchld_handler | |
| 255 is invoked should be handled OK: | |
| 256 | |
| 257 - handler invoked before waitpid(): In this case, subprocess | |
| 258 status will be set by sigchld_handler. waitpid() here will | |
| 259 return -1 with errno set to ECHILD, which is a valid exit | |
| 260 condition. | |
| 261 | |
| 262 - handler invoked during waitpid(): as above, except that errno | |
| 263 here will be set to EINTR. This will cause waitpid() to be | |
| 264 called again, and this time it will exit with ECHILD. | |
| 265 | |
| 266 - handler invoked after waitpid(): The following code will reap | |
| 267 the subprocess. In the handler, wait() will return -1 because | |
| 268 there is no child to reap, and the handler will exit without | |
| 269 modifying child subprocess status. */ | |
| 270 int ret, status; | |
| 271 | |
| 272 /* Because the SIGCHLD handler can potentially reap the synchronous | |
| 273 subprocess, we should take care of that. */ | |
| 274 | |
| 275 /* Will stay in the do loop as long as: | |
| 276 1. Process is alive | |
| 277 2. Ctrl-G is not pressed */ | |
| 278 do | |
| 279 { | |
| 280 QUIT; | |
| 281 ret = waitpid (pid, &status, 0); | |
| 282 /* waitpid returns 0 if the process is still alive. */ | |
| 283 } | |
| 284 while (ret == 0 || (ret == -1 && errno == EINTR)); | |
| 285 | |
| 286 if (ret == pid) /* Success */ | |
| 287 /* Set synch process globals. This is can also happen | |
| 288 in sigchld_handler, and that code is duplicated. */ | |
| 289 { | |
| 290 synch_process_alive = 0; | |
| 291 if (WIFEXITED (status)) | |
| 292 synch_process_retcode = WEXITSTATUS (status); | |
| 293 else if (WIFSIGNALED (status)) | |
| 294 synch_process_death = signal_name (WTERMSIG (status)); | |
| 295 } | |
| 296 /* On exiting the loop, ret will be -1, with errno set to ECHILD if | |
| 297 the child has already been reaped, e.g. in the signal handler. */ | |
| 298 | |
| 299 /* Otherwise, we've had some error condition here. | |
| 300 Per POSIX, the only other possibilities are: | |
| 301 - EFAULT (bus error accessing arg 2) or | |
| 302 - EINVAL (incorrect arguments), | |
| 303 which are both program bugs. | |
| 304 | |
| 305 Since implementations may add their own error indicators on top, | |
| 306 we ignore it by default. */ | |
| 307 #elif defined (EMACS_BLOCK_SIGNAL) && !defined (BROKEN_WAIT_FOR_SIGNAL) && defined (SIGCHLD) | |
| 308 while (1) | |
| 309 { | |
| 310 static int wait_debugging = 0; /* Set nonzero to make following | |
| 311 function work under dbx (at least for bsd). */ | |
| 312 QUIT; | |
| 313 if (wait_debugging) | |
| 314 return; | |
| 315 | |
| 316 EMACS_BLOCK_SIGNAL (SIGCHLD); | |
| 317 /* Block SIGCHLD from happening during this check, | |
| 318 to avoid race conditions. */ | |
| 319 if (kill (pid, 0) < 0) | |
| 320 { | |
| 321 EMACS_UNBLOCK_SIGNAL (SIGCHLD); | |
| 322 return; | |
| 323 } | |
| 324 else | |
| 325 /* WARNING: Whatever this macro does *must* not allow SIGCHLD | |
| 326 to happen between the time that it's reenabled and when we | |
| 327 begin to block. Otherwise we may end up blocking for a | |
| 328 signal that has already arrived and isn't coming again. | |
| 329 Can you say "race condition"? | |
| 330 | |
| 331 I assume that the system calls sigpause() or sigsuspend() | |
| 332 to provide this atomicness. If you're getting hangs in | |
| 333 sigpause()/sigsuspend(), then your OS doesn't implement | |
| 334 this properly (this applies under hpux9, for example). | |
| 335 Try defining BROKEN_WAIT_FOR_SIGNAL. */ | |
| 336 EMACS_WAIT_FOR_SIGNAL (SIGCHLD); | |
| 337 } | |
| 853 | 338 #else /* not HAVE_WAITPID and (not EMACS_BLOCK_SIGNAL or BROKEN_WAIT_FOR_SIGNAL) */ |
| 428 | 339 /* This approach is kind of cheesy but is guaranteed(?!) to work |
| 340 for all systems. */ | |
| 341 while (1) | |
| 342 { | |
| 343 QUIT; | |
| 344 if (kill (pid, 0) < 0) | |
| 345 return; | |
| 771 | 346 stop_interrupts (); |
| 347 sleep (1); | |
| 348 start_interrupts (); | |
| 428 | 349 } |
| 350 #endif /* OS features */ | |
| 351 } | |
| 352 | |
| 853 | 353 #endif /* NEED_SYNC_PROCESS_CODE */ |
| 428 | 354 |
| 355 /* | |
| 356 * flush any pending output | |
| 357 * (may flush input as well; it does not matter the way we use it) | |
| 358 */ | |
| 359 | |
| 360 void | |
| 2286 | 361 flush_pending_output ( |
| 362 #if !defined (HAVE_TERMIOS) && (defined (TCFLSH) || defined (TIOCFLUSH)) | |
| 363 int channel | |
| 364 #else | |
| 365 int UNUSED (channel) | |
| 366 #endif | |
| 367 ) | |
| 428 | 368 { |
| 369 #ifdef HAVE_TERMIOS | |
| 370 /* If we try this, we get hit with SIGTTIN, because | |
| 371 the child's tty belongs to the child's pgrp. */ | |
| 372 #elif defined (TCFLSH) | |
| 373 ioctl (channel, TCFLSH, 1); | |
| 374 #elif defined (TIOCFLUSH) | |
| 375 int zero = 0; | |
| 376 /* 3rd arg should be ignored | |
| 377 but some 4.2 kernels actually want the address of an int | |
| 378 and nonzero means something different. */ | |
| 379 ioctl (channel, TIOCFLUSH, &zero); | |
| 380 #endif | |
| 381 } | |
| 382 | |
| 442 | 383 #ifndef WIN32_NATIVE |
| 428 | 384 /* Set up the terminal at the other end of a pseudo-terminal that |
| 385 we will be controlling an inferior through. | |
| 386 It should not echo or do line-editing, since that is done | |
| 387 in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
| 388 | |
| 389 void | |
| 390 child_setup_tty (int out) | |
| 391 { | |
| 392 struct emacs_tty s; | |
| 430 | 393 emacs_get_tty (out, &s); |
| 428 | 394 |
| 395 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 396 assert (isatty(out)); | |
| 397 s.main.c_oflag |= OPOST; /* Enable output postprocessing */ | |
| 398 s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
| 513 | 399 |
| 400 { | |
| 401 /* Disable all output delays. */ | |
| 402 tcflag_t delay_mask = 0; | |
| 428 | 403 #ifdef NLDLY |
| 513 | 404 delay_mask |= NLDLY; |
| 405 #endif | |
| 406 #ifdef CRDLY | |
| 407 delay_mask |= CRDLY; | |
| 408 #endif | |
| 409 #ifdef TABDLY | |
| 410 delay_mask |= TABDLY; /* Also disables tab expansion (Posix). */ | |
| 411 #endif | |
| 412 #ifdef BSDLY | |
| 413 delay_mask |= BSDLY; | |
| 414 #endif | |
| 415 #ifdef VTDLY | |
| 416 delay_mask |= VTDLY; | |
| 428 | 417 #endif |
| 513 | 418 #ifdef FFDLY |
| 419 delay_mask |= FFDLY; | |
| 420 #endif | |
| 421 s.main.c_oflag &= ~delay_mask; | |
| 422 } | |
| 423 | |
| 424 #ifdef OXTABS | |
| 425 /* Posix defines the TAB3 value for TABDLY to mean: expand tabs to spaces. | |
| 426 On those systems tab expansion would be disabled by the above code. | |
| 427 BSD systems use an independent flag, OXTABS. */ | |
| 428 s.main.c_oflag &= ~OXTABS; /* Disable tab expansion */ | |
| 429 #endif | |
| 430 | |
| 428 | 431 s.main.c_lflag &= ~ECHO; /* Disable echo */ |
| 432 s.main.c_lflag |= ISIG; /* Enable signals */ | |
| 433 #ifdef IUCLC | |
| 434 s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
| 435 #endif | |
| 436 #ifdef OLCUC | |
| 437 s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ | |
| 438 #endif | |
| 513 | 439 |
| 428 | 440 #if defined (CSIZE) && defined (CS8) |
| 441 s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ | |
| 442 #endif | |
| 443 #ifdef ISTRIP | |
| 444 s.main.c_iflag &= ~ISTRIP; /* Don't strip 8th bit on input */ | |
| 445 #endif | |
| 446 #if 0 | |
| 447 /* Unnecessary as long as ICANON is set */ | |
| 448 s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ | |
| 449 s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
| 450 #endif /* 0 */ | |
| 451 | |
| 452 s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
| 453 s.main.c_cc[VEOF] = 04; /* ensure that EOF is Control-D */ | |
| 454 s.main.c_cc[VERASE] = _POSIX_VDISABLE; /* disable erase processing */ | |
| 455 s.main.c_cc[VKILL] = _POSIX_VDISABLE; /* disable kill processing */ | |
| 456 | |
| 457 #ifdef HPUX | |
| 458 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
| 459 #endif /* HPUX */ | |
| 460 | |
| 461 #ifdef AIX | |
| 462 #ifndef IBMR2AIX | |
| 463 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 464 s.main.c_line = 0; | |
| 465 s.main.c_iflag &= ~ASCEDIT; | |
| 466 #endif /* IBMR2AIX */ | |
| 467 /* Also, PTY overloads NUL and BREAK. | |
| 468 don't ignore break, but don't signal either, so it looks like NUL. | |
| 469 This really serves a purpose only if running in an XTERM window | |
| 470 or via TELNET or the like, but does no harm elsewhere. */ | |
| 471 s.main.c_iflag &= ~IGNBRK; | |
| 472 s.main.c_iflag &= ~BRKINT; | |
| 473 #endif /* AIX */ | |
| 474 #ifdef SIGNALS_VIA_CHARACTERS | |
| 475 /* TTY `special characters' are used in process_send_signal | |
| 476 so set them here to something useful. */ | |
| 477 s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
| 478 s.main.c_cc[VINTR] = 'C' &037; /* Control-C */ | |
| 479 s.main.c_cc[VSUSP] = 'Z' &037; /* Control-Z */ | |
| 480 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
| 481 /* TTY `special characters' work better as signals, so disable | |
| 482 character forms */ | |
| 483 s.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 484 s.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 485 s.main.c_cc[VSUSP] = _POSIX_VDISABLE; | |
| 486 s.main.c_lflag &= ~ISIG; | |
| 487 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
| 488 s.main.c_cc[VEOL] = _POSIX_VDISABLE; | |
| 489 #if defined (CBAUD) | |
| 440 | 490 /* <mdiers> #### This is not portable. ### |
| 428 | 491 POSIX does not specify CBAUD, and 4.4BSD does not have it. |
| 492 Instead, POSIX suggests to use cfset{i,o}speed(). | |
| 493 [cf. D. Lewine, POSIX Programmer's Guide, Chapter 8: Terminal | |
| 494 I/O, O'Reilly 1991] */ | |
| 495 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
| 496 #else | |
| 497 /* <mdiers> What to do upon failure? Just ignoring rc is probably | |
| 498 not acceptable, is it? */ | |
| 499 if (cfsetispeed (&s.main, B9600) == -1) /* ignore */; | |
| 500 if (cfsetospeed (&s.main, B9600) == -1) /* ignore */; | |
| 501 #endif /* defined (CBAUD) */ | |
| 502 | |
| 503 #else /* not HAVE_TERMIO */ | |
| 504 | |
| 505 s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
| 506 | CBREAK | TANDEM); | |
| 507 s.main.sg_flags |= LPASS8; | |
| 508 s.main.sg_erase = 0377; | |
| 509 s.main.sg_kill = 0377; | |
| 510 s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ | |
| 511 | |
| 512 #endif /* not HAVE_TERMIO */ | |
| 430 | 513 emacs_set_tty (out, &s, 0); |
| 428 | 514 } |
| 442 | 515 #endif /* WIN32_NATIVE */ |
| 428 | 516 |
| 517 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
518 #if !defined (SIGTSTP) |
| 428 | 519 |
| 520 #define SIG_PARAM_TYPE int | |
| 521 | |
| 522 /* Record a signal code and the handler for it. */ | |
| 523 struct save_signal | |
| 524 { | |
| 525 int code; | |
| 872 | 526 RETSIGTYPE (XCDECL * handler) (SIG_PARAM_TYPE); |
| 428 | 527 }; |
| 528 | |
| 529 static void | |
| 530 save_signal_handlers (struct save_signal *saved_handlers) | |
| 531 { | |
| 532 while (saved_handlers->code) | |
| 533 { | |
| 534 saved_handlers->handler | |
| 872 | 535 = (RETSIGTYPE (XCDECL *) (SIG_PARAM_TYPE)) EMACS_SIGNAL (saved_handlers->code, SIG_IGN); |
| 428 | 536 saved_handlers++; |
| 537 } | |
| 538 } | |
| 539 | |
| 540 static void | |
| 541 restore_signal_handlers (struct save_signal *saved_handlers) | |
| 542 { | |
| 543 while (saved_handlers->code) | |
| 544 { | |
| 613 | 545 EMACS_SIGNAL (saved_handlers->code, saved_handlers->handler); |
| 428 | 546 saved_handlers++; |
| 547 } | |
| 548 } | |
| 549 | |
|
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550 /* Fork a subshell. */ |
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551 static void |
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552 sys_subshell (void) |
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553 { |
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554 Lisp_Object dir; |
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555 Ibyte *str = 0; |
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556 Bytecount len; |
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557 struct gcpro gcpro1; |
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558 Ibyte *sh = 0; |
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559 Extbyte *shext; |
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560 |
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561 /* Use our buffer's default directory for the subshell. */ |
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562 |
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563 /* Note: These calls are spread out to insure that the return values |
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564 of the calls (which may be newly-created strings) are properly |
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565 GC-protected. */ |
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566 |
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567 GCPRO1 (dir); |
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568 |
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569 dir = current_buffer->directory; |
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570 /* If the current dir has no terminating slash, we'll get undesirable |
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571 results, so put the slash back. */ |
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572 dir = Ffile_name_as_directory (dir); |
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573 dir = Funhandled_file_name_directory (dir); |
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574 dir = expand_and_dir_to_file (dir, Qnil); |
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575 |
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576 str = alloca_ibytes (XSTRING_LENGTH (dir) + 2); |
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577 len = XSTRING_LENGTH (dir); |
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578 memcpy (str, XSTRING_DATA (dir), len); |
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579 if (!IS_ANY_SEP (str[len - 1])) |
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580 str[len++] = DIRECTORY_SEP; |
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581 str[len] = 0; |
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582 |
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583 if (sh == 0) |
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584 sh = egetenv ("SHELL"); |
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585 if (sh == 0) |
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586 sh = (Ibyte *) "sh"; |
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587 |
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588 PATHNAME_CONVERT_OUT (sh, shext); |
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589 |
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590 UNGCPRO; |
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591 |
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592 #ifdef WIN32_NATIVE |
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593 |
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594 if (str) |
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595 qxe_chdir (str); |
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596 |
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597 /* Waits for process completion */ |
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598 if (XEUNICODE_P ? |
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599 _wspawnlp (_P_WAIT, (const wchar_t *) shext, |
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600 (const wchar_t *) shext, NULL) != 0 : |
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601 _spawnlp (_P_WAIT, shext, shext, NULL) != 0) |
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602 report_process_error ("Can't spawn subshell", Qunbound); |
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603 else |
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604 return; /* we're done, no need to wait for termination */ |
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605 |
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606 #else /* not WIN32_NATIVE */ |
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607 |
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608 { |
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609 int pid; |
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610 struct save_signal saved_handlers[5]; |
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611 |
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612 saved_handlers[0].code = SIGINT; |
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613 saved_handlers[1].code = SIGQUIT; |
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614 saved_handlers[2].code = SIGTERM; |
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615 #ifdef SIGIO |
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616 saved_handlers[3].code = SIGIO; |
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617 saved_handlers[4].code = 0; |
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618 #else |
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619 saved_handlers[3].code = 0; |
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620 #endif |
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621 |
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622 pid = fork (); |
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623 |
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624 if (pid == -1) |
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625 report_process_error ("Can't spawn subshell", Qunbound); |
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626 if (pid == 0) |
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627 { |
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628 if (str) |
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629 qxe_chdir (str); |
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630 |
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631 #if !defined (NO_SUBPROCESSES) |
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632 close_process_descs (); /* Close Emacs's pipes/ptys */ |
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633 #endif |
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634 |
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635 #ifdef SET_EMACS_PRIORITY |
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636 if (emacs_priority != 0) |
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637 nice (-emacs_priority); /* Give the new shell the default priority */ |
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638 #endif |
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639 |
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640 execlp (shext, shext, 0); |
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641 retry_write (1, "Can't execute subshell", 22); |
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642 _exit (1); |
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643 } |
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644 |
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645 save_signal_handlers (saved_handlers); |
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646 synch_process_alive = 1; |
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647 wait_for_termination (pid); |
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648 restore_signal_handlers (saved_handlers); |
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649 } |
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650 |
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651 #endif /* not WIN32_NATIVE */ |
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652 } |
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653 |
|
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654 #endif /* !defined (SIGTSTP) */ |
| 428 | 655 |
| 656 | |
| 657 | |
| 658 /* Suspend the Emacs process; give terminal to its superior. */ | |
| 659 void | |
| 660 sys_suspend (void) | |
| 661 { | |
| 662 #if defined (SIGTSTP) | |
| 663 { | |
| 664 int pgrp = EMACS_GET_PROCESS_GROUP (); | |
| 665 EMACS_KILLPG (pgrp, SIGTSTP); | |
| 666 } | |
| 667 | |
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668 #else /* No SIGTSTP */ |
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669 |
|
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670 /* On a system where suspending is not implemented, |
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671 instead fork a subshell and let it talk directly to the terminal |
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672 while we wait. */ |
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673 sys_subshell (); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
674 |
| 428 | 675 #endif |
| 676 } | |
| 677 | |
| 678 /* Suspend a process if possible; give terminal to its superior. */ | |
| 679 void | |
| 2340 | 680 sys_suspend_process ( |
| 681 #ifdef SIGTSTP | |
| 682 int process | |
| 683 #else | |
| 684 int UNUSED (process) | |
| 685 #endif | |
| 686 ) | |
| 428 | 687 { |
| 688 /* I don't doubt that it is possible to suspend processes on | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
689 * VMS machines, but I don't know how to do it, so... |
| 428 | 690 */ |
| 691 #if defined (SIGTSTP) | |
| 692 kill(process, SIGTSTP); | |
| 693 #endif | |
| 694 } | |
| 695 | |
| 696 | |
| 697 /* Given FD, obtain pty buffer size. When no luck, a good guess is made, | |
| 442 | 698 so that the function works even when fd is not a pty. */ |
| 428 | 699 |
| 700 int | |
| 2340 | 701 get_pty_max_bytes ( |
| 702 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
| 703 int fd | |
| 704 #else | |
| 705 int UNUSED (fd) | |
| 706 #endif | |
| 707 ) | |
| 428 | 708 { |
| 442 | 709 /* DEC OSF 4.0 fpathconf returns 255, but xemacs hangs on long shell |
| 710 input lines if we return 253. 252 is OK!. So let's leave a bit | |
| 711 of slack for the newline that xemacs will insert, and for those | |
| 712 inevitable vendor off-by-one-or-two-or-three bugs. */ | |
| 713 #define MAX_CANON_SLACK 10 | |
| 714 #define SAFE_MAX_CANON (127 - MAX_CANON_SLACK) | |
| 428 | 715 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) |
| 442 | 716 { |
| 717 int max_canon = fpathconf (fd, _PC_MAX_CANON); | |
| 718 #ifdef __hpux__ | |
| 719 /* HP-UX 10.20 fpathconf returns 768, but this results in | |
| 720 truncated input lines, while 255 works. */ | |
| 721 if (max_canon > 255) max_canon = 255; | |
| 428 | 722 #endif |
| 442 | 723 return (max_canon < 0 ? SAFE_MAX_CANON : |
| 724 max_canon > SAFE_MAX_CANON ? max_canon - MAX_CANON_SLACK : | |
| 725 max_canon); | |
| 726 } | |
| 727 #elif defined (_POSIX_MAX_CANON) | |
| 728 return (_POSIX_MAX_CANON > SAFE_MAX_CANON ? | |
| 729 _POSIX_MAX_CANON - MAX_CANON_SLACK : | |
| 730 _POSIX_MAX_CANON); | |
| 731 #else | |
| 732 return SAFE_MAX_CANON; | |
| 733 #endif | |
| 428 | 734 } |
| 735 | |
| 736 /* Figure out the eof character for the FD. */ | |
| 737 | |
| 867 | 738 Ibyte |
| 428 | 739 get_eof_char (int fd) |
| 740 { | |
| 867 | 741 const Ibyte ctrl_d = (Ibyte) '\004'; |
| 428 | 742 |
| 743 if (!isatty (fd)) | |
| 744 return ctrl_d; | |
| 745 #ifdef HAVE_TERMIOS | |
| 746 { | |
| 747 struct termios t; | |
| 748 tcgetattr (fd, &t); | |
| 749 #if 0 | |
| 750 /* What is the following line designed to do??? -mrb */ | |
| 647 | 751 if ((int) strlen ((const char *) t.c_cc) < (VEOF + 1)) |
| 428 | 752 return ctrl_d; |
| 753 else | |
| 867 | 754 return (Ibyte) t.c_cc[VEOF]; |
| 428 | 755 #endif |
| 867 | 756 return t.c_cc[VEOF] == _POSIX_VDISABLE ? ctrl_d : (Ibyte) t.c_cc[VEOF]; |
| 428 | 757 } |
| 758 #else /* ! HAVE_TERMIOS */ | |
| 759 /* On Berkeley descendants, the following IOCTL's retrieve the | |
| 760 current control characters. */ | |
| 761 #if defined (TIOCGETC) | |
| 762 { | |
| 763 struct tchars c; | |
| 764 ioctl (fd, TIOCGETC, &c); | |
| 867 | 765 return (Ibyte) c.t_eofc; |
| 428 | 766 } |
| 767 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
| 768 /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
| 769 characters. */ | |
| 770 #ifdef TCGETA | |
| 771 { | |
| 772 struct termio t; | |
| 773 ioctl (fd, TCGETA, &t); | |
| 647 | 774 if ((int) strlen ((const char *) t.c_cc) < (VINTR + 1)) |
| 428 | 775 return ctrl_d; |
| 776 else | |
| 867 | 777 return (Ibyte) t.c_cc[VINTR]; |
| 428 | 778 } |
| 779 #else /* ! defined (TCGETA) */ | |
| 780 /* Rather than complain, we'll just guess ^D, which is what | |
| 781 * earlier emacsen always used. */ | |
| 782 return ctrl_d; | |
| 783 #endif /* ! defined (TCGETA) */ | |
| 784 #endif /* ! defined (TIOCGETC) */ | |
| 785 #endif /* ! defined (HAVE_TERMIOS) */ | |
| 786 } | |
| 787 | |
| 788 /* Set the logical window size associated with descriptor FD | |
| 789 to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
| 790 | |
| 791 int | |
| 2340 | 792 set_window_size ( |
| 793 #if defined (TIOCSWINSZ) || defined (TIOCSSIZE) | |
| 794 int fd, int height, int width | |
| 795 #else | |
| 796 int UNUSED (fd), int UNUSED (height), int UNUSED (width) | |
| 797 #endif | |
| 798 ) | |
| 428 | 799 { |
| 800 #ifdef TIOCSWINSZ | |
| 801 | |
| 802 /* BSD-style. */ | |
| 803 struct winsize size; | |
| 804 size.ws_row = height; | |
| 805 size.ws_col = width; | |
| 806 | |
| 807 if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
| 808 return 0; /* error */ | |
| 809 else | |
| 810 return 1; | |
| 811 | |
| 812 #elif defined (TIOCSSIZE) | |
| 813 | |
| 814 /* SunOS - style. */ | |
| 815 struct ttysize size; | |
| 816 size.ts_lines = height; | |
| 817 size.ts_cols = width; | |
| 818 | |
| 819 if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
| 820 return 0; | |
| 821 else | |
| 822 return 1; | |
| 823 #else | |
| 824 return -1; | |
| 825 #endif | |
| 826 } | |
| 827 | |
| 828 /* Set up the proper status flags for use of a pty. */ | |
| 829 | |
| 830 void | |
| 2340 | 831 setup_pty ( |
| 832 #ifdef TIOCPKT | |
| 833 int fd | |
| 834 #else | |
| 835 int UNUSED (fd) | |
| 836 #endif | |
| 837 ) | |
| 428 | 838 { |
| 839 #ifdef TIOCPKT | |
| 840 /* In some systems (Linux through 2.0.0, at least), packet mode doesn't | |
| 841 get cleared when a pty is closed, so we need to clear it here. | |
| 842 Linux pre2.0.13 contained an attempted fix for this (from Ted Ts'o, | |
| 843 tytso@mit.edu), but apparently it messed up rlogind and telnetd, so he | |
| 844 removed the fix in pre2.0.14. - dkindred@cs.cmu.edu | |
| 845 */ | |
| 846 { | |
| 847 int off = 0; | |
| 848 ioctl (fd, TIOCPKT, (char *)&off); | |
| 849 } | |
| 535 | 850 #endif /* TIOCPKT */ |
| 428 | 851 } |
| 852 | |
| 853 | |
| 854 /************************************************************************/ | |
| 855 /* TTY control */ | |
| 856 /************************************************************************/ | |
| 857 | |
| 858 /* ------------------------------------------------------ */ | |
| 859 /* get baud rate */ | |
| 860 /* ------------------------------------------------------ */ | |
| 861 | |
| 862 /* It really makes more sense for the baud-rate to be console-specific | |
| 863 and not device-specific, but it's (at least potentially) used for output | |
| 864 decisions. */ | |
| 865 | |
| 866 void | |
| 867 init_baud_rate (struct device *d) | |
| 868 { | |
| 869 if (DEVICE_WIN_P (d) || DEVICE_STREAM_P (d)) | |
| 870 { | |
| 871 DEVICE_BAUD_RATE (d) = 38400; | |
| 872 return; | |
| 873 } | |
| 874 | |
| 875 #ifdef HAVE_TTY | |
| 876 assert (DEVICE_TTY_P (d)); | |
| 877 { | |
| 647 | 878 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 428 | 879 int input_fd = CONSOLE_TTY_DATA (con)->infd; |
| 814 | 880 #ifdef HAVE_TERMIOS |
| 428 | 881 struct termios sg; |
| 882 | |
| 883 sg.c_cflag = B9600; | |
| 884 tcgetattr (input_fd, &sg); | |
| 885 DEVICE_TTY_DATA (d)->ospeed = cfgetospeed (&sg); | |
| 886 #elif defined (HAVE_TERMIO) | |
| 887 struct termio sg; | |
| 888 | |
| 889 sg.c_cflag = B9600; | |
| 890 # ifdef HAVE_TCATTR | |
| 891 tcgetattr (input_fd, &sg); | |
| 892 # else | |
| 893 ioctl (input_fd, TCGETA, &sg); | |
| 894 # endif | |
| 895 DEVICE_TTY_DATA (d)->ospeed = sg.c_cflag & CBAUD; | |
| 896 #else /* neither TERMIOS nor TERMIO */ | |
| 897 struct sgttyb sg; | |
| 898 | |
| 899 sg.sg_ospeed = B9600; | |
| 900 if (ioctl (input_fd, TIOCGETP, &sg) < 0) | |
| 2500 | 901 ABORT (); |
| 428 | 902 DEVICE_TTY_DATA (d)->ospeed = sg.sg_ospeed; |
| 903 #endif | |
| 904 } | |
| 905 | |
| 906 DEVICE_BAUD_RATE (d) = | |
| 907 (DEVICE_TTY_DATA (d)->ospeed < countof (baud_convert) | |
| 908 ? baud_convert[DEVICE_TTY_DATA (d)->ospeed] | |
| 909 : 9600); | |
| 910 | |
| 911 if (DEVICE_BAUD_RATE (d) == 0) | |
| 912 DEVICE_BAUD_RATE (d) = 1200; | |
| 913 #endif /* HAVE_TTY */ | |
| 914 } | |
| 915 | |
| 916 | |
| 917 /* ------------------------------------------------------ */ | |
| 918 /* SIGIO control */ | |
| 919 /* ------------------------------------------------------ */ | |
| 920 | |
| 853 | 921 #if defined (SIGIO) && !defined (BROKEN_SIGIO) |
| 428 | 922 |
| 923 static void | |
| 924 init_sigio_on_device (struct device *d) | |
| 925 { | |
| 926 int filedesc = DEVICE_INFD (d); | |
| 927 | |
| 928 #if defined (FIOSSAIOOWN) | |
| 929 { /* HPUX stuff */ | |
| 930 int owner = getpid (); | |
| 931 int ioctl_status; | |
| 932 if (DEVICE_TTY_P (d)) | |
| 933 { | |
| 934 ioctl_status = ioctl (filedesc, FIOGSAIOOWN, | |
| 935 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 936 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, &owner); | |
| 937 } | |
| 938 #ifdef HAVE_WINDOW_SYSTEM | |
| 939 else if (!DEVICE_STREAM_P (d)) | |
| 940 { | |
| 941 ioctl_status = ioctl (filedesc, SIOCGPGRP, | |
| 942 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 943 ioctl_status = ioctl (filedesc, SIOCSPGRP, &owner); | |
| 944 } | |
| 945 #endif | |
| 946 } | |
| 947 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 948 DEVICE_OLD_FCNTL_OWNER (d) = fcntl (filedesc, F_GETOWN, 0); | |
| 949 fcntl (filedesc, F_SETOWN, getpid ()); | |
| 950 #endif | |
| 951 } | |
| 952 | |
| 953 static void | |
| 954 reset_sigio_on_device (struct device *d) | |
| 955 { | |
| 956 int filedesc = DEVICE_INFD (d); | |
| 957 | |
| 958 #if defined (FIOSSAIOOWN) | |
| 959 { /* HPUX stuff */ | |
| 960 int ioctl_status; | |
| 961 if (DEVICE_TTY_P (d)) | |
| 962 { | |
| 963 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, | |
| 964 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 965 } | |
| 966 #ifdef HAVE_WINDOW_SYSTEM | |
| 967 else if (!DEVICE_STREAM_P (d)) | |
| 968 { | |
| 969 ioctl_status = ioctl (filedesc, SIOCSPGRP, | |
| 970 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 971 } | |
| 972 #endif | |
| 973 } | |
| 974 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 975 fcntl (filedesc, F_SETOWN, DEVICE_OLD_FCNTL_OWNER (d)); | |
| 976 #endif | |
| 977 } | |
| 978 | |
| 979 static void | |
| 980 request_sigio_on_device (struct device *d) | |
| 981 { | |
| 982 int filedesc = DEVICE_INFD (d); | |
| 983 | |
| 502 | 984 /* NOTE: It appears that Linux has its own mechanism for requesting |
| 985 SIGIO, using the F_GETSIG and F_SETSIG commands to fcntl(). | |
| 986 These let you pick which signal you want sent (not just SIGIO), | |
| 987 and if you do this, you get additional info which tells you which | |
| 988 file descriptor has input ready on it. The man page says: | |
| 989 | |
| 990 Using these mechanisms, a program can implement fully | |
| 991 asynchronous I/O without using select(2) or poll(2) most | |
| 992 of the time. | |
| 993 | |
| 994 The use of O_ASYNC, F_GETOWN, F_SETOWN is specific to BSD | |
| 995 and Linux. F_GETSIG and F_SETSIG are Linux-specific. | |
| 996 POSIX has asynchronous I/O and the aio_sigevent structure | |
| 997 to achieve similar things; these are also available in | |
| 998 Linux as part of the GNU C Library (Glibc). | |
| 999 | |
| 1000 But it appears that Linux also supports O_ASYNC, so I see no | |
| 1001 particular need to switch. --ben | |
| 1002 */ | |
| 1003 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1004 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 1005 { |
| 502 | 1006 int events = 0; |
| 428 | 1007 ioctl (filedesc, I_GETSIG, &events); |
| 1008 ioctl (filedesc, I_SETSIG, events | S_INPUT); | |
| 1009 } | |
| 502 | 1010 #elif defined (O_ASYNC) |
| 1011 /* Generally FASYNC and O_ASYNC are both defined, and both equal; | |
| 1012 but let's not depend on that. O_ASYNC appears to be more | |
| 1013 standard (at least the Linux include files think so), so | |
| 1014 check it first. */ | |
| 1015 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | O_ASYNC); | |
| 428 | 1016 #elif defined (FASYNC) |
| 1017 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | FASYNC); | |
| 1018 #elif defined (FIOSSAIOSTAT) | |
| 1019 { | |
| 1020 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 1021 sockets and other devices for some bizarre reason. We guess | |
| 1022 that an X device is a socket, and tty devices aren't. We then | |
| 1023 use the following crud to do the appropriate thing. */ | |
| 1024 int on = 1; | |
| 1025 int ioctl_status; /* ####DG: check if IOCTL succeeds here. */ | |
| 1026 | |
| 1027 if (DEVICE_TTY_P (d)) | |
| 1028 { | |
| 1029 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &on); | |
| 1030 } | |
| 1031 #ifdef HAVE_WINDOW_SYSTEM | |
| 1032 else if (!DEVICE_STREAM_P (d)) | |
| 1033 { | |
| 1034 ioctl_status = ioctl (filedesc, FIOASYNC, &on); | |
| 1035 } | |
| 1036 #endif | |
| 1037 } | |
| 1038 #elif defined (FIOASYNC) | |
| 1039 { | |
| 1040 int on = 1; | |
| 1041 ioctl (filedesc, FIOASYNC, &on); | |
| 1042 } | |
| 1043 #endif | |
| 1044 } | |
| 1045 | |
| 1046 static void | |
| 1047 unrequest_sigio_on_device (struct device *d) | |
| 1048 { | |
| 1049 int filedesc = DEVICE_INFD (d); | |
| 1050 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1051 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 1052 { |
| 502 | 1053 int events = 0; |
| 428 | 1054 ioctl (filedesc, I_GETSIG, &events); |
| 1055 ioctl (filedesc, I_SETSIG, events & ~S_INPUT); | |
| 1056 } | |
| 502 | 1057 #elif defined (O_ASYNC) |
| 1058 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~O_ASYNC); | |
| 428 | 1059 #elif defined (FASYNC) |
| 1060 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~FASYNC); | |
| 1061 #elif defined (FIOSSAIOSTAT) | |
| 1062 { | |
| 1063 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 1064 sockets and other devices for some bizarre reason. We guess | |
| 1065 that an X device is a socket, and tty devices aren't. We then | |
| 1066 use the following crud to do the appropriate thing. */ | |
| 1067 | |
| 1068 int off = 0; | |
| 1069 int ioctl_status; | |
| 1070 | |
| 1071 /* See comment for request_sigio_on_device */ | |
| 1072 | |
| 1073 if (DEVICE_TTY_P (d)) | |
| 1074 { | |
| 1075 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &off); | |
| 1076 } | |
| 1077 else | |
| 1078 { | |
| 1079 ioctl_status = ioctl (filedesc, FIOASYNC, &off); | |
| 1080 } | |
| 1081 } | |
| 1082 #elif defined (FIOASYNC) | |
| 1083 { | |
| 1084 int off = 0; | |
| 1085 ioctl (filedesc, FIOASYNC, &off); | |
| 1086 } | |
| 1087 #endif | |
| 1088 } | |
| 1089 | |
| 1090 void | |
| 1091 request_sigio (void) | |
| 1092 { | |
| 1093 Lisp_Object devcons, concons; | |
| 1094 | |
| 1095 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1096 { | |
| 1097 struct device *d; | |
| 1098 | |
| 1099 d = XDEVICE (XCAR (devcons)); | |
| 1100 | |
| 1101 if (!DEVICE_STREAM_P (d)) | |
| 1102 request_sigio_on_device (d); | |
| 1103 } | |
| 1104 } | |
| 1105 | |
| 1106 void | |
| 1107 unrequest_sigio (void) | |
| 1108 { | |
| 1109 Lisp_Object devcons, concons; | |
| 1110 | |
| 1111 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1112 { | |
| 1113 struct device *d; | |
| 1114 | |
| 1115 d = XDEVICE (XCAR (devcons)); | |
| 1116 | |
| 1117 if (!DEVICE_STREAM_P (d)) | |
| 1118 unrequest_sigio_on_device (d); | |
| 1119 } | |
| 1120 } | |
| 1121 | |
| 1122 #endif /* SIGIO */ | |
| 1123 | |
| 1124 /* ------------------------------------------------------ */ | |
| 1125 /* Changing Emacs's process group */ | |
| 1126 /* ------------------------------------------------------ */ | |
| 1127 | |
| 1128 /* Saving and restoring the process group of Emacs's terminal. */ | |
| 1129 | |
| 1130 /* On some systems, apparently (?!) Emacs must be in its own process | |
| 1131 group in order to receive SIGIO correctly. On other systems | |
| 1132 (e.g. Solaris), it's not required and doing it makes things | |
| 1133 get fucked up. So, we only do it when | |
| 1134 SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP is defined. Basically, | |
| 1135 this is only required for BSD 4.2 systems. (Actually, I bet | |
| 1136 we don't have to do this at all -- those systems also | |
| 1137 required interrupt input, which we don't support.) | |
| 1138 | |
| 1139 If Emacs was in its own process group (i.e. inherited_pgroup == | |
| 1140 getpid ()), then we know we're running under a shell with job | |
| 1141 control (Emacs would never be run as part of a pipeline). | |
| 1142 Everything is fine. | |
| 1143 | |
| 1144 If Emacs was not in its own process group, then we know we're | |
| 1145 running under a shell (or a caller) that doesn't know how to | |
| 1146 separate itself from Emacs (like sh). Emacs must be in its own | |
| 1147 process group in order to receive SIGIO correctly. In this | |
| 1148 situation, we put ourselves in our own pgroup, forcibly set the | |
| 1149 tty's pgroup to our pgroup, and make sure to restore and reinstate | |
| 1150 the tty's pgroup just like any other terminal setting. If | |
| 1151 inherited_group was not the tty's pgroup, then we'll get a | |
| 1152 SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
| 1153 it goes foreground in the future, which is what should happen. */ | |
| 1154 | |
| 1155 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1156 | |
| 442 | 1157 static pid_t inherited_pgroup; |
| 1158 static pid_t inherited_tty_pgroup; | |
| 428 | 1159 |
| 1160 #endif | |
| 1161 | |
| 1162 void | |
| 1163 munge_tty_process_group (void) | |
| 1164 { | |
| 1165 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1166 if (noninteractive) | |
| 1167 return; | |
| 1168 | |
| 1169 /* Only do this munging if we have a device on the controlling | |
| 1170 terminal. See the large comment below. */ | |
| 1171 | |
| 1172 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1173 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1174 { | |
| 1175 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 442 | 1176 pid_t me = getpid (); |
| 428 | 1177 EMACS_BLOCK_SIGNAL (SIGTTOU); |
| 1178 EMACS_SET_TTY_PROCESS_GROUP (fd, &me); | |
| 1179 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1180 retry_close (fd); |
| 428 | 1181 } |
| 1182 #endif | |
| 1183 } | |
| 1184 | |
| 1185 /* Split off the foreground process group to Emacs alone. | |
| 1186 When we are in the foreground, but not started in our own process | |
| 1187 group, redirect the TTY to point to our own process group. We need | |
| 1188 to be in our own process group to receive SIGIO properly. */ | |
| 1189 static void | |
| 1190 munge_process_groups (void) | |
| 1191 { | |
| 1192 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1193 if (noninteractive) | |
| 1194 return; | |
| 1195 | |
| 1196 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1197 | |
| 1198 munge_tty_process_group (); | |
| 1199 #endif | |
| 1200 } | |
| 1201 | |
| 1202 void | |
| 1203 unmunge_tty_process_group (void) | |
| 1204 { | |
| 1205 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1206 { | |
| 1207 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1208 EMACS_BLOCK_SIGNAL (SIGTTOU); | |
| 1209 EMACS_SET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 1210 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1211 retry_close (fd); |
| 428 | 1212 } |
| 1213 #endif | |
| 1214 } | |
| 1215 | |
| 1216 /* Set the tty to our original foreground group. | |
| 1217 Also restore the original process group (put us back into sh's | |
| 1218 process group), so that ^Z will suspend both us and sh. */ | |
| 1219 static void | |
| 1220 unmunge_process_groups (void) | |
| 1221 { | |
| 1222 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1223 if (noninteractive) | |
| 1224 return; | |
| 1225 | |
| 1226 unmunge_tty_process_group (); | |
| 1227 | |
| 1228 EMACS_SET_PROCESS_GROUP (inherited_pgroup); | |
| 1229 #endif | |
| 1230 } | |
| 1231 | |
| 1232 /* According to some old wisdom, we need to be in a separate process | |
| 1233 group for SIGIO to work correctly (at least on some systems ...). | |
| 1234 So go ahead and put ourselves into our own process group. This | |
| 1235 will fail if we're already in our own process group, but who cares. | |
| 1236 Also record whether we were in our own process group. (In general, | |
| 1237 we will already be in our own process group if we were started from | |
| 1238 a job-control shell like csh, but not if we were started from sh). | |
| 1239 | |
| 1240 If we succeeded in changing our process group, then we will no | |
| 1241 longer be in the foreground process group of our controlling | |
| 1242 terminal. Therefore, if we have a console open onto this terminal, | |
| 1243 we have to change the controlling terminal's foreground process | |
| 1244 group (otherwise we will get stopped with a SIGTTIN signal when | |
| 1245 attempting to read from the terminal). It's important, | |
| 1246 however, that we do this *only* when we have a console open onto | |
| 1247 the terminal. It's a decidedly bad idea to do so otherwise, | |
| 1248 especially if XEmacs was started from the background. */ | |
| 1249 | |
| 1250 void | |
| 1251 init_process_group (void) | |
| 1252 { | |
| 1253 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1254 if (! noninteractive) | |
| 1255 { | |
| 1256 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1257 inherited_pgroup = EMACS_GET_PROCESS_GROUP (); | |
| 1258 EMACS_GET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 771 | 1259 retry_close (fd); |
| 428 | 1260 EMACS_SEPARATE_PROCESS_GROUP (); |
| 1261 } | |
| 1262 #endif | |
| 1263 } | |
| 1264 | |
| 1265 void | |
| 1266 disconnect_controlling_terminal (void) | |
| 1267 { | |
| 1268 # ifdef HAVE_SETSID | |
| 1269 /* Controlling terminals are attached to a session. | |
| 1270 Create a new session for us; it will have no controlling | |
| 1271 terminal. This also, of course, puts us in our own | |
| 1272 process group. */ | |
| 1273 setsid (); | |
| 1274 # else | |
| 1275 /* Put us in our own process group. */ | |
| 1276 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1277 # if defined (TIOCNOTTY) | |
| 1278 /* This is the older way of disconnecting the controlling | |
| 1279 terminal, on 4.3 BSD. We must open /dev/tty; using | |
| 1280 filedesc 0 is not sufficient because it could be | |
| 1281 something else (e.g. our stdin was redirected to | |
| 1282 another terminal). | |
| 1283 */ | |
| 1284 { | |
| 1285 int j = open ("/dev/tty", O_RDWR, 0); | |
| 1286 ioctl (j, TIOCNOTTY, 0); | |
| 771 | 1287 retry_close (j); |
| 428 | 1288 } |
| 1289 # endif /* TIOCNOTTY */ | |
| 1290 /* | |
| 1291 On systems without TIOCNOTTY and without | |
| 1292 setsid(), we don't need to do anything more to | |
| 1293 disconnect our controlling terminal. Here is | |
| 1294 what the man page for termio(7) from a SYSV 3.2 | |
| 1295 system says: | |
| 1296 | |
| 1297 "The first terminal file opened by the process group leader | |
| 1298 of a terminal file not already associated with a process | |
| 1299 group becomes the control terminal for that process group. | |
| 1300 The control terminal plays a special role in handling quit | |
| 1301 and interrupt signals, as discussed below. The control | |
| 1302 terminal is inherited by a child process during a fork(2). | |
| 1303 A process can break this association by changing its process | |
| 1304 group using setpgrp(2)." | |
| 1305 | |
| 1306 */ | |
| 1307 # endif /* not HAVE_SETSID */ | |
| 1308 } | |
| 1309 | |
| 1310 | |
| 1311 /* ------------------------------------------------------ */ | |
| 1312 /* Getting and setting emacs_tty structures */ | |
| 1313 /* ------------------------------------------------------ */ | |
| 1314 | |
| 1315 /* It's wrong to encase these into #ifdef HAVE_TTY because we need | |
| 1316 them for child TTY processes. */ | |
| 1317 /* However, this does break NT support while we don't do child TTY processes */ | |
| 442 | 1318 #ifndef WIN32_NATIVE |
| 428 | 1319 |
| 1320 /* Set *TC to the parameters associated with the terminal FD. | |
| 1321 Return zero if all's well, or -1 if we ran into an error we | |
| 1322 couldn't deal with. */ | |
| 1323 int | |
| 1324 emacs_get_tty (int fd, struct emacs_tty *settings) | |
| 1325 { | |
| 1326 /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
| 1327 #ifdef HAVE_TCATTR | |
| 1328 /* We have those nifty POSIX tcmumbleattr functions. */ | |
| 1329 if (tcgetattr (fd, &settings->main) < 0) | |
| 1330 return -1; | |
| 1331 | |
| 1332 #elif defined HAVE_TERMIO | |
| 1333 /* The SYSV-style interface? */ | |
| 1334 if (ioctl (fd, TCGETA, &settings->main) < 0) | |
| 1335 return -1; | |
| 1336 | |
| 814 | 1337 #else |
| 428 | 1338 /* I give up - I hope you have the BSD ioctls. */ |
| 1339 if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
| 1340 return -1; | |
| 1341 #endif /* HAVE_TCATTR */ | |
| 1342 | |
| 1343 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1344 #ifdef HAVE_LTCHARS | |
| 1345 if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) | |
| 1346 return -1; | |
| 1347 #endif | |
| 1348 | |
| 1349 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1350 #ifdef HAVE_TCHARS | |
| 1351 if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 | |
| 1352 || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
| 1353 return -1; | |
| 1354 #endif | |
| 1355 | |
| 1356 /* We have survived the tempest. */ | |
| 1357 return 0; | |
| 1358 } | |
| 1359 | |
| 1360 /* Set the parameters of the tty on FD according to the contents of | |
| 1361 *SETTINGS. If FLUSHP is non-zero, we discard input. | |
| 430 | 1362 Return 0 if all went well, and -1 if anything failed. |
| 1363 #### All current callers use FLUSHP == 0. */ | |
| 428 | 1364 |
| 1365 int | |
| 1366 emacs_set_tty (int fd, struct emacs_tty *settings, int flushp) | |
| 1367 { | |
| 1368 /* Set the primary parameters - baud rate, character size, etcetera. */ | |
| 1369 #ifdef HAVE_TCATTR | |
| 1370 int i; | |
| 1371 /* We have those nifty POSIX tcmumbleattr functions. | |
| 1372 William J. Smith <wjs@wiis.wang.com> writes: | |
| 1373 "POSIX 1003.1 defines tcsetattr() to return success if it was | |
| 1374 able to perform any of the requested actions, even if some | |
| 1375 of the requested actions could not be performed. | |
| 1376 We must read settings back to ensure tty setup properly. | |
| 1377 AIX requires this to keep tty from hanging occasionally." */ | |
| 1378 /* This makes sure that we don't loop indefinitely in here. */ | |
| 1379 for (i = 0 ; i < 10 ; i++) | |
| 1380 if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) | |
| 1381 { | |
| 1382 if (errno == EINTR) | |
| 1383 continue; | |
| 1384 else | |
| 1385 return -1; | |
| 1386 } | |
| 1387 else | |
| 1388 { | |
| 2957 | 1389 struct termios new_; |
| 428 | 1390 |
| 1391 /* Get the current settings, and see if they're what we asked for. */ | |
| 2957 | 1392 tcgetattr (fd, &new_); |
| 428 | 1393 /* We cannot use memcmp on the whole structure here because under |
| 1394 * aix386 the termios structure has some reserved field that may | |
| 1395 * not be filled in. | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1396 * FIXME: Now that aix386 is gone, can we memcmp the whole structure? |
| 428 | 1397 */ |
| 2957 | 1398 if ( new_.c_iflag == settings->main.c_iflag |
| 1399 && new_.c_oflag == settings->main.c_oflag | |
| 1400 && new_.c_cflag == settings->main.c_cflag | |
| 1401 && new_.c_lflag == settings->main.c_lflag | |
| 1402 && memcmp(new_.c_cc, settings->main.c_cc, NCCS) == 0) | |
| 428 | 1403 break; |
| 1404 else | |
| 1405 continue; | |
| 1406 } | |
| 1407 #elif defined HAVE_TERMIO | |
| 1408 /* The SYSV-style interface? */ | |
| 1409 if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) | |
| 1410 return -1; | |
| 1411 | |
| 814 | 1412 #else |
| 428 | 1413 /* I give up - I hope you have the BSD ioctls. */ |
| 1414 if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
| 1415 return -1; | |
| 1416 #endif /* HAVE_TCATTR */ | |
| 1417 | |
| 1418 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1419 #ifdef HAVE_LTCHARS | |
| 1420 if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) | |
| 1421 return -1; | |
| 1422 #endif | |
| 1423 | |
| 1424 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1425 #ifdef HAVE_TCHARS | |
| 1426 if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 | |
| 1427 || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
| 1428 return -1; | |
| 1429 #endif | |
| 1430 | |
| 1431 /* We have survived the tempest. */ | |
| 1432 return 0; | |
| 1433 } | |
| 1434 | |
| 442 | 1435 #endif /* WIN32_NATIVE */ |
| 428 | 1436 |
| 1437 /* ------------------------------------------------------ */ | |
| 1438 /* Initializing a device */ | |
| 1439 /* ------------------------------------------------------ */ | |
| 1440 | |
| 1441 #ifdef HAVE_TTY | |
| 1442 | |
| 1443 #if defined (TIOCGLTC) && defined (HAVE_LTCHARS) /* HAVE_LTCHARS */ | |
| 1444 static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; | |
| 1445 #endif | |
| 1446 #ifdef TIOCGETC /* HAVE_TCHARS */ | |
| 1447 #ifdef HAVE_TCHARS | |
| 1448 static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; | |
| 1449 #endif | |
| 1450 #endif | |
| 1451 | |
| 1452 static void | |
| 1453 tty_init_sys_modes_on_device (struct device *d) | |
| 1454 { | |
| 1455 struct emacs_tty tty; | |
| 2286 | 1456 int input_fd; |
| 428 | 1457 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1458 | |
| 1459 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
| 1460 | |
| 430 | 1461 emacs_get_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty); |
| 428 | 1462 tty = CONSOLE_TTY_DATA (con)->old_tty; |
| 1463 | |
| 1464 con->tty_erase_char = Qnil; | |
| 1465 | |
| 1466 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1467 /* after all those years... */ | |
| 1468 con->tty_erase_char = make_char (tty.main.c_cc[VERASE]); | |
| 1469 tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ | |
| 1470 tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
| 1471 #ifdef ISTRIP | |
| 1472 tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
| 1473 #endif | |
| 1474 tty.main.c_lflag &= ~ECHO; /* Disable echo */ | |
| 1475 tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
| 1476 #ifdef IEXTEN | |
| 1477 tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ | |
| 1478 #endif | |
| 1479 tty.main.c_lflag |= ISIG; /* Enable signals */ | |
| 1480 if (TTY_FLAGS (con).flow_control) | |
| 1481 { | |
| 1482 tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
| 1483 #ifdef IXANY | |
| 1484 tty.main.c_iflag &= ~IXANY; | |
| 1485 #endif /* IXANY */ | |
| 1486 } | |
| 1487 else | |
| 1488 tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
| 1489 tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
| 1490 on output */ | |
| 513 | 1491 |
| 1492 #if 0 | |
| 1493 /* We used to disable tab expansion here, but this is the user's decision. */ | |
| 1494 #if defined (TABDLY) && defined (TAB3) | |
| 1495 if ((tty.main.c_oflag & TABDLY) == TAB3) | |
| 1496 tty.main.c_oflag &= ~TABDLY; /* Disable tab expansion (Posix). */ | |
| 1497 #elif defined (OXTABS) | |
| 1498 tty.main.c_oflag &= ~OXTABS; /* Disable tab expansion (BSD). */ | |
| 1499 #endif | |
| 1500 #endif /* 0 */ | |
| 1501 | |
| 428 | 1502 #ifdef CS8 |
| 1503 if (TTY_FLAGS (con).meta_key) | |
| 1504 { | |
| 1505 tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
| 1506 tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
| 1507 } | |
| 1508 #endif | |
| 1509 if (CONSOLE_TTY_DATA (con)->controlling_terminal) | |
| 1510 { | |
| 1204 | 1511 tty.main.c_cc[VINTR] = /* C-g (usually) gives SIGINT */ |
| 2828 | 1512 event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1513 /* Set up C-g for both SIGQUIT and SIGINT. |
| 1514 We don't know which we will get, but we handle both alike | |
| 1515 so which one it really gives us does not matter. */ | |
| 1204 | 1516 tty.main.c_cc[VQUIT] = tty.main.c_cc[VINTR]; |
| 428 | 1517 } |
| 1518 else | |
| 1519 { | |
| 1520 tty.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 1521 tty.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 1522 } | |
| 1523 tty.main.c_cc[VMIN] = 1; /* Input should wait for at | |
| 1524 least 1 char */ | |
| 1525 tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
| 1526 #ifdef VSWTCH | |
| 1527 tty.main.c_cc[VSWTCH] = _POSIX_VDISABLE; /* Turn off shell layering use | |
| 1528 of C-z */ | |
| 1529 #endif /* VSWTCH */ | |
| 1530 /* There was some conditionalizing here on (mips or TCATTR), but | |
| 1531 I think that's wrong. There was one report of C-y (DSUSP) not being | |
| 1532 disabled on HP9000s700 systems, and this might fix it. */ | |
| 1533 #ifdef VSUSP | |
| 1534 tty.main.c_cc[VSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-z. */ | |
| 1535 #endif /* VSUSP */ | |
| 1536 #ifdef V_DSUSP | |
| 1537 tty.main.c_cc[V_DSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-y. */ | |
| 1538 #endif /* V_DSUSP */ | |
| 1539 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ | |
| 1540 tty.main.c_cc[VDSUSP] = _POSIX_VDISABLE; | |
| 1541 #endif /* VDSUSP */ | |
| 1542 #ifdef VLNEXT | |
| 1543 tty.main.c_cc[VLNEXT] = _POSIX_VDISABLE; | |
| 1544 #endif /* VLNEXT */ | |
| 1545 #ifdef VREPRINT | |
| 1546 tty.main.c_cc[VREPRINT] = _POSIX_VDISABLE; | |
| 1547 #endif /* VREPRINT */ | |
| 1548 #ifdef VWERASE | |
| 1549 tty.main.c_cc[VWERASE] = _POSIX_VDISABLE; | |
| 1550 #endif /* VWERASE */ | |
| 1551 #ifdef VDISCARD | |
| 1552 tty.main.c_cc[VDISCARD] = _POSIX_VDISABLE; | |
| 1553 #endif /* VDISCARD */ | |
| 1554 #ifdef VSTART | |
| 1555 tty.main.c_cc[VSTART] = _POSIX_VDISABLE; | |
| 1556 #endif /* VSTART */ | |
| 1557 #ifdef VSTRT | |
| 1558 tty.main.c_cc[VSTRT] = _POSIX_VDISABLE; /* called VSTRT on some systems */ | |
| 1559 #endif /* VSTART */ | |
| 1560 #ifdef VSTOP | |
| 1561 tty.main.c_cc[VSTOP] = _POSIX_VDISABLE; | |
| 1562 #endif /* VSTOP */ | |
| 1563 | |
| 1564 #ifdef AIX | |
| 1565 #ifndef IBMR2AIX | |
| 1566 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 1567 tty.main.c_line = 0; | |
| 1568 tty.main.c_iflag &= ~ASCEDIT; | |
| 1569 #else | |
| 1570 tty.main.c_cc[VSTRT] = 255; | |
| 1571 tty.main.c_cc[VSTOP] = 255; | |
| 1572 tty.main.c_cc[VSUSP] = 255; | |
| 1573 tty.main.c_cc[VDSUSP] = 255; | |
| 1574 #endif /* IBMR2AIX */ | |
| 1575 /* Also, PTY overloads NUL and BREAK. | |
| 1576 don't ignore break, but don't signal either, so it looks like NUL. | |
| 1577 This really serves a purpose only if running in an XTERM window | |
| 1578 or via TELNET or the like, but does no harm elsewhere. */ | |
| 1579 tty.main.c_iflag &= ~IGNBRK; | |
| 1580 tty.main.c_iflag &= ~BRKINT; | |
| 1581 #endif /* AIX */ | |
| 1582 #else /* if not HAVE_TERMIO */ | |
| 1583 con->tty_erase_char = make_char (tty.main.sg_erase); | |
| 1584 tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); | |
| 1585 if (TTY_FLAGS (con).meta_key) | |
| 1586 tty.main.sg_flags |= ANYP; | |
| 1587 /* #### should we be using RAW mode here? */ | |
| 1588 tty.main.sg_flags |= /* interrupt_input ? RAW : */ CBREAK; | |
| 1589 #endif /* not HAVE_TERMIO */ | |
| 1590 | |
| 1591 /* If going to use CBREAK mode, we must request C-g to interrupt | |
| 1592 and turn off start and stop chars, etc. If not going to use | |
| 1593 CBREAK mode, do this anyway so as to turn off local flow | |
| 1594 control for user coming over network on 4.2; in this case, | |
| 1595 only t_stopc and t_startc really matter. */ | |
| 1596 #ifndef HAVE_TERMIO | |
| 1597 #ifdef HAVE_TCHARS | |
| 1598 /* Note: if not using CBREAK mode, it makes no difference how we | |
| 1599 set this */ | |
| 1600 tty.tchars = new_tchars; | |
| 2828 | 1601 tty.tchars.t_intrc = event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1602 if (TTY_FLAGS (con).flow_control) |
| 1603 { | |
| 1604 tty.tchars.t_startc = '\021'; | |
| 1605 tty.tchars.t_stopc = '\023'; | |
| 1606 } | |
| 1607 | |
| 1608 tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | | |
| 1609 CONSOLE_TTY_DATA (con)->old_tty.lmode; | |
| 1610 #endif /* HAVE_TCHARS */ | |
| 1611 #endif /* not HAVE_TERMIO */ | |
| 1612 | |
| 1613 #ifdef HAVE_LTCHARS | |
| 1614 tty.ltchars = new_ltchars; | |
| 1615 #endif /* HAVE_LTCHARS */ | |
| 1616 | |
| 430 | 1617 emacs_set_tty (input_fd, &tty, 0); |
| 428 | 1618 |
| 1619 /* This code added to insure that, if flow-control is not to be used, | |
| 1620 we have an unlocked terminal at the start. */ | |
| 1621 | |
| 1622 #ifdef TCXONC | |
| 1623 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TCXONC, 1); | |
| 1624 #endif | |
| 1625 #ifdef TIOCSTART | |
| 1626 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TIOCSTART, 0); | |
| 1627 #endif | |
| 1628 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1629 #if defined (HAVE_TERMIOS) |
| 428 | 1630 #ifdef TCOON |
| 1631 if (!TTY_FLAGS (con).flow_control) tcflow (input_fd, TCOON); | |
| 1632 #endif | |
| 1633 #endif | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1634 |
| 428 | 1635 set_tty_modes (con); |
| 1636 } | |
| 1637 | |
| 1638 #endif /* HAVE_TTY */ | |
| 1639 | |
| 1640 void | |
| 2340 | 1641 init_one_device ( |
| 1642 #if defined(HAVE_TTY) || (defined(SIGIO) && !defined(BROKEN_SIGIO)) | |
| 1643 struct device *d | |
| 1644 #else | |
| 1645 struct device *UNUSED (d) | |
| 1646 #endif | |
| 1647 ) | |
| 428 | 1648 { |
| 1649 #ifdef HAVE_TTY | |
| 1650 if (DEVICE_TTY_P (d)) | |
| 1651 tty_init_sys_modes_on_device (d); | |
| 1652 #endif | |
| 1653 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1654 if (!DEVICE_STREAM_P (d)) | |
| 1655 { | |
| 1656 init_sigio_on_device (d); | |
| 1657 request_sigio_on_device (d); | |
| 1658 } | |
| 1659 #endif | |
| 1660 } | |
| 1661 | |
| 1662 void | |
| 1663 init_one_console (struct console *con) | |
| 1664 { | |
| 1665 Lisp_Object devcons; | |
| 1666 | |
| 1667 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1668 { | |
| 1669 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1670 | |
| 1671 init_one_device (d); | |
| 1672 } | |
| 1673 } | |
| 1674 | |
| 1675 void | |
| 1676 reinit_initial_console (void) | |
| 1677 { | |
| 1678 munge_process_groups (); | |
| 1679 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1680 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1681 init_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1682 } | |
| 1683 | |
| 1684 | |
| 1685 /* ------------------------------------------------------ */ | |
| 1686 /* Other TTY functions */ | |
| 1687 /* ------------------------------------------------------ */ | |
| 1688 | |
| 1689 #ifdef HAVE_TTY | |
| 1690 | |
| 1691 #if 0 /* not currently used */ | |
| 1692 | |
| 1693 /* Return nonzero if safe to use tabs in output. | |
| 1694 At the time this is called, init_sys_modes has not been done yet. */ | |
| 1695 | |
| 1696 int | |
| 2340 | 1697 tabs_safe_p (struct device *USED_IF_TTY (d)) |
| 428 | 1698 { |
| 1699 #ifdef HAVE_TTY | |
| 1700 if (DEVICE_TTY_P (d)) | |
| 1701 { | |
| 1702 struct emacs_tty tty; | |
| 1703 | |
| 430 | 1704 emacs_get_tty (DEVICE_INFD (d), &tty); |
| 428 | 1705 return EMACS_TTY_TABS_OK (&tty); |
| 1706 } | |
| 1707 #endif | |
| 1708 return 1; | |
| 1709 } | |
| 1710 | |
| 1711 #endif /* 0 */ | |
| 1712 | |
| 1713 /* Get terminal size from system. | |
| 1714 Store number of lines into *heightp and width into *widthp. | |
| 1715 If zero or a negative number is stored, the value is not valid. */ | |
| 1716 | |
| 1717 void | |
| 1718 get_tty_device_size (struct device *d, int *widthp, int *heightp) | |
| 1719 { | |
| 1720 int input_fd = DEVICE_INFD (d); | |
| 1721 | |
| 1722 assert (DEVICE_TTY_P (d)); | |
| 1723 | |
| 1724 #ifdef TIOCGWINSZ | |
| 1725 { | |
| 1726 /* BSD-style. */ | |
| 1727 struct winsize size; | |
| 1728 | |
| 1729 if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
| 1730 *widthp = *heightp = 0; | |
| 1731 else | |
| 1732 { | |
| 1733 *widthp = size.ws_col; | |
| 1734 *heightp = size.ws_row; | |
| 1735 } | |
| 1736 } | |
| 1737 #elif defined TIOCGSIZE | |
| 1738 { | |
| 1739 /* SunOS - style. */ | |
| 1740 struct ttysize size; | |
| 1741 | |
| 1742 if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
| 1743 *widthp = *heightp = 0; | |
| 1744 else | |
| 1745 { | |
| 1746 *widthp = size.ts_cols; | |
| 1747 *heightp = size.ts_lines; | |
| 1748 } | |
| 1749 } | |
| 1750 #else /* system doesn't know size */ | |
| 1751 | |
| 1752 *widthp = 0; | |
| 1753 *heightp = 0; | |
| 1754 | |
| 1755 #endif /* not !TIOCGWINSZ */ | |
| 1756 } | |
| 1757 | |
| 1758 #endif /* HAVE_TTY */ | |
| 1759 | |
| 1760 | |
| 1761 /* ------------------------------------------------------ */ | |
| 1762 /* Is device 8 bit ? */ | |
| 1763 /* ------------------------------------------------------ */ | |
| 1764 | |
| 1765 #ifdef HAVE_TTY | |
| 1766 | |
| 1767 int | |
| 1768 eight_bit_tty (struct device *d) | |
| 1769 { | |
| 1770 struct emacs_tty s; | |
| 1771 int input_fd; | |
| 1772 int eight_bit = 0; | |
| 1773 | |
| 1774 assert (DEVICE_TTY_P (d)); | |
| 1775 input_fd = DEVICE_INFD (d); | |
| 1776 | |
| 430 | 1777 emacs_get_tty (input_fd, &s); |
| 428 | 1778 |
| 1779 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1780 eight_bit = (s.main.c_cflag & CSIZE) == CS8; | |
| 1781 #else | |
| 1782 eight_bit = 0; /* I don't know how to do it */ | |
| 1783 #endif | |
| 1784 return eight_bit; | |
| 1785 } | |
| 1786 | |
| 1787 #endif /* HAVE_TTY */ | |
| 1788 | |
| 1789 | |
| 1790 /* ------------------------------------------------------ */ | |
| 1791 /* Resetting a device */ | |
| 1792 /* ------------------------------------------------------ */ | |
| 1793 | |
| 1794 #ifdef HAVE_TTY | |
| 1795 | |
| 1796 /* Prepare the terminal for exiting Emacs; move the cursor to the | |
| 1797 bottom of the frame, turn off interrupt-driven I/O, etc. */ | |
| 1798 static void | |
| 1799 tty_reset_sys_modes_on_device (struct device *d) | |
| 1800 { | |
|
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1801 #if defined (BSD) |
| 2286 | 1802 int output_fd; |
| 1803 #endif | |
| 1804 int input_fd; | |
| 428 | 1805 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1806 | |
| 1807 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
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1808 #if defined (BSD) |
| 428 | 1809 output_fd = CONSOLE_TTY_DATA (con)->outfd; |
| 2286 | 1810 #endif |
| 428 | 1811 |
| 1812 tty_redisplay_shutdown (con); | |
| 1813 /* reset_tty_modes() flushes the connection at its end. */ | |
| 1814 reset_tty_modes (con); | |
| 1815 | |
| 1816 #if defined (BSD) | |
| 1817 /* Avoid possible loss of output when changing terminal modes. */ | |
| 1818 fsync (output_fd); | |
| 1819 #endif | |
| 1820 | |
| 430 | 1821 while (emacs_set_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty, 0) |
| 428 | 1822 < 0 && errno == EINTR) |
| 1823 ; | |
| 1824 } | |
| 1825 | |
| 1826 #endif /* HAVE_TTY */ | |
| 1827 | |
| 1828 void | |
| 1829 reset_one_device (struct device *d) | |
| 1830 { | |
| 1831 #ifdef HAVE_TTY | |
| 1832 if (DEVICE_TTY_P (d)) | |
| 1833 tty_reset_sys_modes_on_device (d); | |
| 1834 else | |
| 1835 #endif | |
| 1836 if (DEVICE_STREAM_P (d)) | |
| 1837 fflush (CONSOLE_STREAM_DATA (XCONSOLE (DEVICE_CONSOLE (d)))->out); | |
| 1838 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1839 if (!DEVICE_STREAM_P (d)) | |
| 1840 { | |
| 1841 unrequest_sigio_on_device (d); | |
| 1842 reset_sigio_on_device (d); | |
| 1843 } | |
| 1844 #endif | |
| 1845 } | |
| 1846 | |
| 1847 void | |
| 1848 reset_one_console (struct console *con) | |
| 1849 { | |
| 1850 /* Note: this can be called during GC. */ | |
| 1851 Lisp_Object devcons; | |
| 1852 | |
| 1853 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1854 { | |
| 1855 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1856 | |
| 1857 reset_one_device (d); | |
| 1858 } | |
| 1859 } | |
| 1860 | |
| 1861 void | |
| 1862 reset_all_consoles (void) | |
| 1863 { | |
| 1864 /* Note: this can be called during GC. */ | |
| 1865 Lisp_Object concons; | |
| 1866 | |
| 1867 CONSOLE_LOOP (concons) | |
| 1868 { | |
| 1869 struct console *con = XCONSOLE (XCAR (concons)); | |
| 1870 | |
| 1871 reset_one_console (con); | |
| 1872 } | |
| 1873 | |
| 1874 unmunge_process_groups (); | |
| 1875 } | |
| 1876 | |
| 1877 void | |
| 1878 reset_initial_console (void) | |
| 1879 { | |
| 1880 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1881 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1882 reset_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1883 unmunge_process_groups (); | |
| 1884 } | |
| 1885 | |
| 1886 | |
| 1887 /************************************************************************/ | |
| 1888 /* limits of text/data segments */ | |
| 1889 /************************************************************************/ | |
| 1890 | |
| 801 | 1891 /* Need start_of_data() as much as possible now, for total_data_usage(); |
| 1892 but with PDUMP and WIN32_NATIVE, can't currently do it. */ | |
| 1330 | 1893 #if ! (defined (PDUMP) && defined (WIN32_NATIVE) && defined (SYSTEM_MALLOC)) |
| 428 | 1894 #define NEED_STARTS |
| 1895 #endif | |
| 1896 | |
| 1897 #ifdef NEED_STARTS | |
| 1898 /* Some systems that cannot dump also cannot implement these. */ | |
| 1899 | |
| 1900 /* | |
| 1901 * Return the address of the start of the text segment prior to | |
| 1902 * doing an unexec. After unexec the return value is undefined. | |
| 1903 * See crt0.c for further explanation and _start. | |
| 1904 * | |
| 1905 */ | |
| 1906 | |
| 801 | 1907 #if !defined (HAVE_TEXT_START) && !defined (PDUMP) |
| 440 | 1908 |
| 442 | 1909 EXTERN_C int _start (void); |
| 428 | 1910 |
| 1911 char * | |
| 1912 start_of_text (void) | |
| 1913 { | |
| 1914 #ifdef TEXT_START | |
| 442 | 1915 return (char *) TEXT_START; |
| 428 | 1916 #else |
| 442 | 1917 return (char *) _start; |
| 428 | 1918 #endif /* TEXT_START */ |
| 1919 } | |
| 440 | 1920 #endif /* !defined(HAVE_TEXT_START) && !defined(PDUMP) */ |
| 428 | 1921 |
| 1922 /* | |
| 1923 * Return the address of the start of the data segment prior to | |
| 1924 * doing an unexec. After unexec the return value is undefined. | |
| 442 | 1925 * See ecrt0.c for further information and definition of data_start. |
| 428 | 1926 * |
| 1927 * Apparently, on BSD systems this is etext at startup. On | |
| 1928 * USG systems (swapping) this is highly mmu dependent and | |
| 1929 * is also dependent on whether or not the program is running | |
| 1930 * with shared text. Generally there is a (possibly large) | |
| 1931 * gap between end of text and start of data with shared text. | |
| 1932 * | |
| 1933 * On Uniplus+ systems with shared text, data starts at a | |
| 1934 * fixed address. Each port (from a given oem) is generally | |
| 1935 * different, and the specific value of the start of data can | |
| 1936 * be obtained via the UniPlus+ specific "uvar" system call, | |
| 1937 * however the method outlined in crt0.c seems to be more portable. | |
| 1938 * | |
| 1939 * Probably what will have to happen when a USG unexec is available, | |
| 1940 * at least on UniPlus, is temacs will have to be made unshared so | |
| 1941 * that text and data are contiguous. Then once loadup is complete, | |
| 1942 * unexec will produce a shared executable where the data can be | |
| 1943 * at the normal shared text boundary and the startofdata variable | |
| 1944 * will be patched by unexec to the correct value. | |
| 1945 * | |
| 1946 */ | |
| 1947 | |
| 801 | 1948 #if defined (ORDINARY_LINK) && !defined (MINGW) |
| 428 | 1949 extern char **environ; |
| 1950 #endif | |
| 1951 | |
| 1952 void * | |
| 1953 start_of_data (void) | |
| 1954 { | |
| 1955 #ifdef DATA_START | |
| 1956 return ((char *) DATA_START); | |
| 1957 #else | |
| 452 | 1958 #if defined (ORDINARY_LINK) || defined(PDUMP) |
| 428 | 1959 /* |
| 1960 * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
| 1961 * data_start isn't defined. We take the address of environ, which | |
| 1962 * is known to live at or near the start of the system crt0.c, and | |
| 1963 * we don't sweat the handful of bytes that might lose. | |
| 1964 */ | |
| 442 | 1965 #if defined (HEAP_IN_DATA) && !defined(PDUMP) |
| 428 | 1966 extern char* static_heap_base; |
| 1967 if (!initialized) | |
| 1968 return static_heap_base; | |
| 1969 #endif | |
| 801 | 1970 return ((char *) &environ); |
| 428 | 1971 #else |
| 1972 extern int data_start; | |
| 1973 return ((char *) &data_start); | |
| 1974 #endif /* ORDINARY_LINK */ | |
| 1975 #endif /* DATA_START */ | |
| 1976 } | |
| 1330 | 1977 #endif /* NEED_STARTS aka !(PDUMP && WIN32_NATIVE && SYSTEM_MALLOC) */ |
| 428 | 1978 |
| 801 | 1979 extern void *minimum_address_seen; /* from xmalloc() */ |
| 1980 extern void *maximum_address_seen; /* from xmalloc() */ | |
| 1981 | |
| 1982 Bytecount | |
| 1983 total_data_usage (void) | |
| 1984 { | |
| 1985 #ifdef NEED_STARTS | |
| 1986 void *data_start = start_of_data (); | |
| 1987 #else | |
| 1988 void *data_start = minimum_address_seen; | |
| 1989 #endif | |
| 854 | 1990 |
| 1315 | 1991 #ifndef WIN32_ANY |
| 814 | 1992 void *data_end = sbrk (0); |
| 801 | 1993 #else |
| 1994 void *data_end = maximum_address_seen; | |
| 1995 #endif | |
| 1996 | |
| 1997 /* Sanity checking -- the min determined by malloc() should always be | |
| 1998 greater than data start determined by other means. We could do the | |
| 1999 same check on the max, except that things like rel-alloc might | |
| 2000 invalidate it. */ | |
| 2001 if (minimum_address_seen && | |
| 2002 (char *) minimum_address_seen < (char *) data_start) | |
| 2003 data_start = minimum_address_seen; | |
| 2004 | |
| 2005 if (data_end < data_start) /* Huh?????????? */ | |
| 2006 data_end = maximum_address_seen; | |
| 2007 | |
| 2008 /* #### Doesn't seem to give good results on Windows; values are much | |
| 2009 higher than actual memory usage. How to fix??? */ | |
| 2010 return (char *) data_end - (char *) data_start; | |
| 2011 } | |
| 2012 | |
| 428 | 2013 |
| 2014 /************************************************************************/ | |
| 2015 /* get the system name */ | |
| 2016 /************************************************************************/ | |
| 2017 | |
| 2018 /* init_system_name sets up the string for the Lisp function | |
| 2019 system-name to return. */ | |
| 2020 | |
| 2021 extern Lisp_Object Vsystem_name; | |
| 2022 | |
| 2023 void | |
| 2024 init_system_name (void) | |
| 2025 { | |
| 442 | 2026 #if defined (WIN32_NATIVE) |
| 771 | 2027 Extbyte hostname[MAX_XETCHAR_SIZE * (MAX_COMPUTERNAME_LENGTH + 1)]; |
| 2028 DWORD size = sizeof (hostname) / XETCHAR_SIZE; | |
| 2029 qxeGetComputerName (hostname, &size); | |
| 2030 Vsystem_name = build_tstr_string (hostname); | |
| 428 | 2031 #elif !defined (HAVE_GETHOSTNAME) |
| 2032 struct utsname uts; | |
| 2033 uname (&uts); | |
|
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2034 Vsystem_name = build_extstring (uts.nodename, Qunix_host_name_encoding); |
| 428 | 2035 #else /* HAVE_GETHOSTNAME */ |
| 647 | 2036 int hostname_size = 256; |
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2037 Extbyte *hostname = alloca_extbytes (hostname_size); |
| 428 | 2038 |
| 2039 /* Try to get the host name; if the buffer is too short, try | |
| 2040 again. Apparently, the only indication gethostname gives of | |
| 2041 whether the buffer was large enough is the presence or absence | |
| 2042 of a '\0' in the string. Eech. */ | |
| 2043 for (;;) | |
| 2044 { | |
| 2045 gethostname (hostname, hostname_size - 1); | |
| 2046 hostname[hostname_size - 1] = '\0'; | |
| 2047 | |
| 2048 /* Was the buffer large enough for the '\0'? */ | |
| 647 | 2049 if ((int) strlen (hostname) < (hostname_size - 1)) |
| 428 | 2050 break; |
| 2051 | |
| 2052 hostname_size <<= 1; | |
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2053 hostname = alloca_extbytes (hostname_size); |
| 428 | 2054 } |
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2055 # if defined (HAVE_SOCKETS) |
| 428 | 2056 /* Turn the hostname into the official, fully-qualified hostname. |
| 2057 Don't do this if we're going to dump; this can confuse system | |
| 2058 libraries on some machines and make the dumped emacs core dump. */ | |
| 2059 if (initialized) | |
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2060 /* !!#### Could fail if we have a 7-bit external encoding */ |
| 428 | 2061 if (!strchr (hostname, '.')) |
| 2062 { | |
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2063 # if !(defined (HAVE_GETADDRINFO) && defined (HAVE_GETNAMEINFO)) |
| 428 | 2064 struct hostent *hp = NULL; |
| 2065 int count; | |
| 440 | 2066 # ifdef TRY_AGAIN |
| 428 | 2067 for (count = 0; count < 10; count++) |
| 2068 { | |
| 2069 h_errno = 0; | |
| 440 | 2070 # endif |
| 428 | 2071 /* Some systems can't handle SIGALARM/SIGIO in gethostbyname(). */ |
| 2072 stop_interrupts (); | |
| 2073 hp = gethostbyname (hostname); | |
| 2074 start_interrupts (); | |
| 440 | 2075 # ifdef TRY_AGAIN |
| 428 | 2076 if (! (hp == 0 && h_errno == TRY_AGAIN)) |
| 2077 break; | |
| 2078 Fsleep_for (make_int (1)); | |
| 2079 } | |
| 440 | 2080 # endif |
| 428 | 2081 if (hp) |
| 2082 { | |
|
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2083 const Extbyte *fqdn = (const Extbyte *) hp->h_name; |
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2084 |
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2085 /* !!#### Could fail if we have a 7-bit external encoding */ |
| 428 | 2086 if (!strchr (fqdn, '.')) |
| 2087 { | |
| 2088 /* We still don't have a fully qualified domain name. | |
| 2089 Try to find one in the list of alternate names */ | |
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2090 Extbyte **alias = hp->h_aliases; |
| 428 | 2091 while (*alias && !strchr (*alias, '.')) |
| 2092 alias++; | |
| 2093 if (*alias) | |
| 2094 fqdn = *alias; | |
| 2095 } | |
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2096 hostname = alloca_extbytes (strlen (fqdn) + 1); |
| 428 | 2097 strcpy (hostname, fqdn); |
| 2098 } | |
| 440 | 2099 # else /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ |
| 2100 struct addrinfo hints, *res; | |
| 2101 | |
| 2102 xzero (hints); | |
| 2103 hints.ai_flags = AI_CANONNAME; | |
| 724 | 2104 #ifdef IPV6_CANONICALIZE |
| 440 | 2105 hints.ai_family = AF_UNSPEC; |
| 724 | 2106 #else |
| 2107 hints.ai_family = PF_INET; | |
| 2108 #endif | |
| 440 | 2109 hints.ai_socktype = SOCK_STREAM; |
| 2110 hints.ai_protocol = 0; | |
| 2111 if (!getaddrinfo (hostname, NULL, &hints, &res)) | |
| 2112 { | |
|
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2113 hostname = alloca_extbytes (strlen (res->ai_canonname) + 1); |
| 440 | 2114 strcpy (hostname, res->ai_canonname); |
| 2115 | |
| 2116 freeaddrinfo (res); | |
| 2117 } | |
| 2118 # endif /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ | |
| 428 | 2119 } |
| 2120 # endif /* HAVE_SOCKETS */ | |
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2121 Vsystem_name = build_extstring (hostname, Qunix_host_name_encoding); |
| 428 | 2122 #endif /* HAVE_GETHOSTNAME */ |
| 2123 { | |
| 867 | 2124 Ibyte *p; |
| 428 | 2125 Bytecount i; |
| 2126 | |
| 2127 for (i = 0, p = XSTRING_DATA (Vsystem_name); | |
| 2128 i < XSTRING_LENGTH (Vsystem_name); | |
| 2129 i++, p++) | |
| 2130 { | |
| 2131 if (*p == ' ' || *p == '\t') | |
| 2132 *p = '-'; | |
| 2133 } | |
| 2134 } | |
| 2135 } | |
| 2136 | |
| 2137 | |
| 2138 /************************************************************************/ | |
| 2139 /* Emulation of select() */ | |
| 2140 /************************************************************************/ | |
| 2141 | |
| 2142 #ifndef HAVE_SELECT | |
| 2143 | |
| 2144 ERROR: XEmacs requires a working select(). | |
| 2145 | |
| 2146 #endif /* not HAVE_SELECT */ | |
| 2147 | |
| 2148 | |
| 2149 /************************************************************************/ | |
| 2150 /* Emulation of signal stuff */ | |
| 2151 /************************************************************************/ | |
| 2152 | |
| 2153 /* BSD 4.1 crap deleted. 4.2 was released in 1983, for God's sake! I | |
| 2154 can't imagine that anyone is actually running that OS any more. | |
| 2155 You can't use X under it (I think) because there's no select(). | |
| 2156 Anyway, the signal stuff has all been changed. If someone wants to | |
| 2157 get this stuff working again, look in the FSF Emacs sources. */ | |
| 2158 | |
| 2159 /* POSIX signals support - DJB */ | |
| 2160 | |
| 2161 #ifdef HAVE_SIGPROCMASK | |
| 2162 | |
| 2163 /* #### Is there any reason this is static global rather than local? */ | |
| 2164 static struct sigaction new_action, old_action; | |
| 2165 | |
| 2166 signal_handler_t | |
| 613 | 2167 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2168 { |
| 2169 #if 0 | |
| 2170 | |
| 2171 /* XEmacs works better if system calls are *not* restarted. | |
| 2172 This allows C-g to interrupt reads and writes, on most systems. | |
| 2173 | |
| 2174 #### Another possibility is to just longjmp() out of the signal | |
| 2175 handler. According to W.R. Stevens, this should be OK on all | |
| 2176 systems. However, I don't want to deal with the potential | |
| 2177 evil ramifications of this at this point. */ | |
| 2178 | |
| 2179 sigemptyset (&new_action.sa_mask); | |
| 2180 new_action.sa_handler = action; | |
| 2181 #if defined (SA_RESTART) | |
| 2182 /* Emacs mostly works better with restartable system services. If this | |
| 2183 * flag exists, we probably want to turn it on here. | |
| 2184 */ | |
| 2185 new_action.sa_flags = SA_RESTART; | |
| 2186 #else | |
| 2187 new_action.sa_flags = 0; | |
| 2188 #endif | |
| 2189 sigaction (signal_number, &new_action, &old_action); | |
| 2190 return (old_action.sa_handler); | |
| 2191 | |
| 2192 #else /* not 0 */ | |
| 2193 | |
| 2194 sigemptyset (&new_action.sa_mask); | |
| 2195 new_action.sa_handler = action; | |
| 2196 #if defined (SA_INTERRUPT) /* don't restart system calls, under SunOS */ | |
| 2197 new_action.sa_flags = SA_INTERRUPT; | |
| 2198 #else | |
| 2199 new_action.sa_flags = 0; | |
| 2200 #endif | |
| 2201 sigaction (signal_number, &new_action, &old_action); | |
| 2202 return (signal_handler_t) (old_action.sa_handler); | |
| 2203 | |
| 2204 #endif /* not 0 */ | |
| 2205 } | |
| 2206 | |
| 2207 #elif defined (HAVE_SIGBLOCK) | |
| 2208 | |
| 2209 /* We use sigvec() rather than signal() if we have it, because | |
| 2210 it lets us specify interruptible system calls. */ | |
| 2211 signal_handler_t | |
| 613 | 2212 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2213 { |
| 2214 struct sigvec vec, ovec; | |
| 2215 | |
| 2216 vec.sv_handler = action; | |
| 2217 vec.sv_mask = 0; | |
| 2218 #ifdef SV_INTERRUPT /* don't restart system calls */ | |
| 2219 vec.sv_flags = SV_INTERRUPT; | |
| 2220 #else | |
| 2221 vec.sv_flags = 0; | |
| 2222 #endif | |
| 2223 | |
| 2224 sigvec (signal_number, &vec, &ovec); | |
| 2225 | |
| 2226 return (ovec.sv_handler); | |
| 2227 } | |
| 2228 | |
| 2229 #endif /* HAVE_SIGBLOCK (HAVE_SIGPROCMASK) */ | |
| 2230 | |
| 2231 | |
| 2232 /************************************************************************/ | |
| 2233 /* Emulation of strerror() and errno support */ | |
| 2234 /************************************************************************/ | |
| 2235 | |
| 2236 #ifndef HAVE_STRERROR | |
| 2237 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
2238 #if !defined(__alpha) && !defined(MACH) && !defined(LINUX) && !defined(IRIX) && !defined(__NetBSD__) |
| 428 | 2239 /* Linux added here by Raymond L. Toy <toy@alydar.crd.ge.com> for XEmacs. */ |
| 2240 /* Irix added here by gparker@sni-usa.com for XEmacs. */ | |
| 2241 /* NetBSD added here by James R Grinter <jrg@doc.ic.ac.uk> for XEmacs */ | |
| 442 | 2242 extern const char *sys_errlist[]; |
| 428 | 2243 extern int sys_nerr; |
| 2244 #endif | |
| 2245 | |
| 2246 #ifdef __NetBSD__ | |
| 2247 extern char *sys_errlist[]; | |
| 2248 extern int sys_nerr; | |
| 2249 #endif | |
| 2250 | |
| 2251 | |
| 442 | 2252 const char * |
| 428 | 2253 strerror (int errnum) |
| 2254 { | |
| 2255 if (errnum >= 0 && errnum < sys_nerr) | |
| 2256 return sys_errlist[errnum]; | |
| 442 | 2257 return ((const char *) GETTEXT ("Unknown error")); |
| 428 | 2258 } |
| 2259 | |
| 2260 #endif /* ! HAVE_STRERROR */ | |
| 2261 | |
| 2262 | |
| 2263 /************************************************************************/ | |
| 2264 /* Encapsulations of system calls */ | |
| 2265 /************************************************************************/ | |
| 2266 | |
| 2267 /***************** low-level calls ****************/ | |
| 2268 | |
| 2269 /* | |
| 2270 * On USG systems the system calls are INTERRUPTIBLE by signals | |
| 2271 * that the user program has elected to catch. Thus the system call | |
| 2272 * must be retried in these cases. To handle this without massive | |
| 2273 * changes in the source code, we remap the standard system call names | |
| 2274 * to names for our own functions in sysdep.c that do the system call | |
| 2275 * with retries. Actually, for portability reasons, it is good | |
| 2276 * programming practice, as this example shows, to limit all actual | |
| 2277 * system calls to a single occurrence in the source. Sure, this | |
| 2278 * adds an extra level of function call overhead but it is almost | |
| 2279 * always negligible. Fred Fish, Unisoft Systems Inc. | |
| 2280 */ | |
| 2281 | |
| 2282 /* Ben sez: read Dick Gabriel's essay about the Worse Is Better | |
| 2283 approach to programming and its connection to the silly | |
| 2284 interruptible-system-call business. To find it, look on | |
| 2340 | 2285 Jamie's home page (http://www.jwz.org/doc/worse-is-better.html). */ |
| 428 | 2286 |
| 771 | 2287 #ifdef WIN32_NATIVE |
| 2288 | |
| 2289 static int | |
| 2290 underlying_open_1 (const Extbyte *path, int oflag, int mode) | |
| 2291 { | |
| 2292 if (XEUNICODE_P) | |
| 2293 return _wopen ((const wchar_t *) path, oflag, mode); | |
| 2294 else | |
| 2295 return _open (path, oflag, mode); | |
| 2296 } | |
| 2297 | |
| 2298 #endif /* WIN32_NATIVE */ | |
| 2299 | |
| 2367 | 2300 /* Just call open() with normal open() semantics, with some fixups for |
| 2301 problems under Windows. */ | |
| 771 | 2302 |
| 2303 static int | |
| 2304 underlying_open (const Extbyte *path, int oflag, int mode) | |
| 2305 { | |
| 2306 #ifdef WIN32_NATIVE | |
| 2307 { | |
| 2308 /* Try to open file without _O_CREAT, to be able to write to hidden | |
| 2309 and system files. Force all file handles to be | |
| 2310 non-inheritable. */ | |
| 2311 int res = underlying_open_1 (path, (oflag & ~_O_CREAT) | _O_NOINHERIT, | |
| 2312 mode); | |
| 2313 if (res >= 0) | |
| 2314 return res; | |
| 2315 return underlying_open_1 (path, oflag | _O_NOINHERIT, mode); | |
| 2316 } | |
| 2317 #else | |
| 2318 return open (path, oflag, mode); | |
| 2319 #endif /* WIN32_NATIVE */ | |
| 2320 } | |
| 2321 | |
| 2367 | 2322 static int |
| 2323 retry_open_1 (const Extbyte *path, int oflag, int mode) | |
| 428 | 2324 { |
| 440 | 2325 #ifdef INTERRUPTIBLE_OPEN |
| 428 | 2326 { |
| 2327 int rtnval; | |
| 771 | 2328 while ((rtnval = underlying_open (path, oflag, mode)) == -1 |
| 428 | 2329 && (errno == EINTR)) |
| 2330 DO_NOTHING; | |
| 2331 return rtnval; | |
| 2332 } | |
| 2333 #else | |
| 771 | 2334 return underlying_open (path, oflag, mode); |
| 428 | 2335 #endif |
| 2336 } | |
| 771 | 2337 |
| 2367 | 2338 /* A version of open() that retries when interrupted. Operates on |
| 2339 externally-encoded filenames. */ | |
| 2340 | |
| 2341 int XCDECL | |
| 2342 retry_open (const Extbyte *path, int oflag, ...) | |
| 2343 { | |
| 2344 int mode; | |
| 2345 va_list ap; | |
| 2346 | |
| 2347 va_start (ap, oflag); | |
| 2348 mode = va_arg (ap, int); | |
| 2349 va_end (ap); | |
| 2350 | |
| 2351 return retry_open_1 (path, oflag, mode); | |
| 2352 } | |
| 2353 | |
| 2354 #if defined (WIN32_NATIVE) && defined (WEXTTEXT_IS_WIDE) | |
| 2355 | |
| 2356 /* Like retry_open() but operate on Wexttext filenames. */ | |
| 2357 | |
| 2358 int XCDECL | |
| 2359 wext_retry_open (const Wexttext *path, int oflag, ...) | |
| 2360 { | |
| 2361 int mode; | |
| 2362 va_list ap; | |
| 2363 | |
| 2364 va_start (ap, oflag); | |
| 2365 mode = va_arg (ap, int); | |
| 2366 va_end (ap); | |
| 2367 | |
| 2368 if (!XEUNICODE_P) | |
| 2369 return retry_open_1 (WEXTTEXT_TO_MULTIBYTE (path), oflag, mode); | |
| 2370 else | |
| 2371 return retry_open_1 ((Extbyte *) path, oflag, mode); | |
| 2372 } | |
| 2373 | |
| 2374 #endif | |
| 2375 | |
| 771 | 2376 /* The basic external entry point to open(). Handles conversion to |
| 2377 external encoding, interruptions, etc. */ | |
| 2378 | |
| 872 | 2379 int XCDECL |
| 867 | 2380 qxe_open (const Ibyte *path, int oflag, ...) |
| 771 | 2381 { |
| 2382 Extbyte *pathout; | |
| 2383 int mode; | |
| 2384 va_list ap; | |
| 2385 | |
| 2386 va_start (ap, oflag); | |
| 2387 mode = va_arg (ap, int); | |
| 2388 va_end (ap); | |
| 2389 | |
| 2390 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2391 return retry_open (pathout, oflag, mode); | |
| 2392 } | |
| 2393 | |
| 2394 /* Like qxe_open, only when open() is interrupted by EINTR, check for | |
| 428 | 2395 QUIT. This allows the callers of this function to be interrupted |
| 2396 with C-g when, say, reading from named pipes. However, this should | |
| 1123 | 2397 be used with caution, as it can run random Lisp code (although it |
| 2398 cannot GC). | |
| 428 | 2399 |
| 2400 This function will not function as expected on systems where open() | |
| 2401 is not interrupted by C-g. However, the worst that can happen is | |
| 2402 the fallback to simple open(). */ | |
| 2403 int | |
| 867 | 2404 qxe_interruptible_open (const Ibyte *path, int oflag, int mode) |
| 428 | 2405 { |
| 2406 /* This function can GC */ | |
| 771 | 2407 Extbyte *pathout; |
| 2408 | |
| 2409 PATHNAME_CONVERT_OUT (path, pathout); | |
| 428 | 2410 |
| 442 | 2411 #ifdef WIN32_NATIVE |
| 440 | 2412 /* Make all handles non-inheritable */ |
| 2413 oflag |= _O_NOINHERIT; | |
| 2414 #endif | |
| 2415 | |
| 428 | 2416 for (;;) |
| 2417 { | |
| 771 | 2418 int rtnval = underlying_open (pathout, oflag, mode); |
| 428 | 2419 if (!(rtnval == -1 && errno == EINTR)) |
| 2420 return rtnval; | |
| 2421 /* open() was interrupted. Was QUIT responsible? */ | |
| 2422 QUIT; | |
| 2423 } | |
| 2424 } | |
| 2425 | |
| 2426 int | |
| 771 | 2427 retry_close (int filedes) |
| 428 | 2428 { |
| 2429 #ifdef INTERRUPTIBLE_CLOSE | |
| 2430 int did_retry = 0; | |
| 2431 REGISTER int rtnval; | |
| 2432 | |
| 2433 while ((rtnval = close (filedes)) == -1 | |
| 2434 && (errno == EINTR)) | |
| 2435 did_retry = 1; | |
| 2436 | |
| 2437 /* If close is interrupted SunOS 4.1 may or may not have closed the | |
| 2438 file descriptor. If it did the second close will fail with | |
| 2439 errno = EBADF. That means we have succeeded. */ | |
| 2440 if (rtnval == -1 && did_retry && errno == EBADF) | |
| 2441 return 0; | |
| 2442 | |
| 2443 return rtnval; | |
| 2444 #else | |
| 2445 return close (filedes); | |
| 2446 #endif | |
| 2447 } | |
| 771 | 2448 |
| 2449 static ssize_t | |
| 2450 retry_read_1 (int fildes, void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2451 { |
| 2452 ssize_t rtnval; | |
| 2453 | |
| 2454 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */ | |
| 2455 while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
| 2456 && (errno == EINTR)) | |
| 2457 { | |
| 2458 if (allow_quit) | |
| 853 | 2459 QUIT; |
| 428 | 2460 } |
| 2461 return rtnval; | |
| 2462 } | |
| 2463 | |
| 2464 ssize_t | |
| 771 | 2465 retry_read (int fildes, void *buf, size_t nbyte) |
| 428 | 2466 { |
| 771 | 2467 return retry_read_1 (fildes, buf, nbyte, 0); |
| 428 | 2468 } |
| 771 | 2469 |
| 2470 static ssize_t | |
| 2471 retry_write_1 (int fildes, const void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2472 { |
| 2473 ssize_t bytes_written = 0; | |
| 442 | 2474 const char *b = (const char *) buf; |
| 428 | 2475 |
| 2476 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */ | |
| 2477 while (nbyte > 0) | |
| 2478 { | |
| 2479 ssize_t rtnval = write (fildes, b, nbyte); | |
| 2480 | |
| 2481 if (allow_quit) | |
| 853 | 2482 QUIT; |
| 428 | 2483 |
| 2484 if (rtnval == -1) | |
| 2485 { | |
| 2486 if (errno == EINTR) | |
| 2487 continue; | |
| 2488 else | |
| 2489 return bytes_written ? bytes_written : -1; | |
| 2490 } | |
| 2491 b += rtnval; | |
| 2492 nbyte -= rtnval; | |
| 2493 bytes_written += rtnval; | |
| 2494 } | |
| 2495 return bytes_written; | |
| 2496 } | |
| 2497 | |
| 2498 ssize_t | |
| 771 | 2499 retry_write (int fildes, const void *buf, size_t nbyte) |
| 428 | 2500 { |
| 771 | 2501 return retry_write_1 (fildes, buf, nbyte, 0); |
| 428 | 2502 } |
| 771 | 2503 |
| 2504 /* Versions of read() and write() that allow quitting out of the actual | |
| 2505 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the | |
| 2506 signal handler) because that's way too losing. | |
| 2507 | |
| 2508 (#### Actually, longjmp()ing out of the signal handler may not be | |
| 2509 as losing as I thought. See qxe_reliable_signal() in sysdep.c.) */ | |
| 2510 | |
| 2511 Bytecount | |
| 2512 read_allowing_quit (int fildes, void *buf, Bytecount size) | |
| 2513 { | |
| 2514 QUIT; | |
| 2515 return retry_read_1 (fildes, buf, size, 1); | |
| 2516 } | |
| 2517 | |
| 2518 Bytecount | |
| 2519 write_allowing_quit (int fildes, const void *buf, Bytecount size) | |
| 2520 { | |
| 2521 QUIT; | |
| 2522 return retry_write_1 (fildes, buf, size, 1); | |
| 2523 } | |
| 428 | 2524 |
| 2525 | |
| 2526 /**************** stdio calls ****************/ | |
| 2527 | |
| 2528 /* There is at least some evidence that the stdio calls are interruptible | |
| 2529 just like the normal system calls, at least on some systems. In any | |
| 2530 case, it doesn't hurt to encapsulate them. */ | |
| 2531 | |
| 2532 /* #### Should also encapsulate fflush(). | |
| 2533 #### Should conceivably encapsulate getchar() etc. What a pain! */ | |
| 2534 | |
| 2535 FILE * | |
| 2367 | 2536 retry_fopen (const Extbyte *path, const Ascbyte *mode) |
| 428 | 2537 { |
| 771 | 2538 #ifdef WIN32_NATIVE |
| 2539 int fd; | |
| 2540 int oflag; | |
| 2367 | 2541 const Ascbyte *mode_save = mode; |
| 771 | 2542 |
| 2543 /* Force all file handles to be non-inheritable. This is necessary to | |
| 2544 ensure child processes don't unwittingly inherit handles that might | |
| 2545 prevent future file access. */ | |
| 2546 | |
| 2547 if (mode[0] == 'r') | |
| 2548 oflag = O_RDONLY; | |
| 2549 else if (mode[0] == 'w' || mode[0] == 'a') | |
| 2550 oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
| 2551 else | |
| 2552 return NULL; | |
| 2553 | |
| 2554 /* Only do simplistic option parsing. */ | |
| 2555 while (*++mode) | |
| 2556 if (mode[0] == '+') | |
| 2557 { | |
| 2558 oflag &= ~(O_RDONLY | O_WRONLY); | |
| 2559 oflag |= O_RDWR; | |
| 2560 } | |
| 2561 else if (mode[0] == 'b') | |
| 2562 { | |
| 2563 oflag &= ~O_TEXT; | |
| 2564 oflag |= O_BINARY; | |
| 2565 } | |
| 2566 else if (mode[0] == 't') | |
| 2567 { | |
| 2568 oflag &= ~O_BINARY; | |
| 2569 oflag |= O_TEXT; | |
| 2570 } | |
| 2571 else break; | |
| 2572 | |
| 2573 fd = underlying_open (path, oflag, 0644); | |
| 2574 if (fd < 0) | |
| 2575 return NULL; | |
| 2576 | |
| 2577 return _fdopen (fd, mode_save); | |
| 428 | 2578 #elif defined (INTERRUPTIBLE_OPEN) |
| 2579 { | |
| 2580 FILE *rtnval; | |
| 771 | 2581 while (!(rtnval = fopen (path, mode)) && (errno == EINTR)) |
| 428 | 2582 DO_NOTHING; |
| 2583 return rtnval; | |
| 2584 } | |
| 2585 #else | |
| 771 | 2586 return fopen (path, mode); |
| 2587 #endif /* defined (INTERRUPTIBLE_OPEN) */ | |
| 428 | 2588 } |
| 771 | 2589 |
| 2590 FILE * | |
| 2367 | 2591 qxe_fopen (const Ibyte *path, const Ascbyte *mode) |
| 771 | 2592 { |
| 2593 Extbyte *pathout; | |
| 2594 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2595 return retry_fopen (pathout, mode); | |
| 2596 } | |
| 2597 | |
| 428 | 2598 int |
| 771 | 2599 retry_fclose (FILE *stream) |
| 428 | 2600 { |
| 2601 #ifdef INTERRUPTIBLE_CLOSE | |
| 2602 int rtnval; | |
| 2603 | |
| 2604 while ((rtnval = fclose (stream)) == EOF | |
| 2605 && (errno == EINTR)) | |
| 2606 ; | |
| 2607 return rtnval; | |
| 2608 #else | |
| 2609 return fclose (stream); | |
| 2610 #endif | |
| 2611 } | |
| 771 | 2612 |
| 428 | 2613 size_t |
| 771 | 2614 retry_fread (void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2615 { |
| 2616 #ifdef INTERRUPTIBLE_IO | |
| 2617 size_t rtnval; | |
| 2618 size_t items_read = 0; | |
| 2619 char *b = (char *) ptr; | |
| 2620 | |
| 2621 while (nitem > 0) | |
| 2622 { | |
| 2623 rtnval = fread (b, size, nitem, stream); | |
| 2624 if (rtnval == 0) | |
| 2625 { | |
| 2626 if (ferror (stream) && errno == EINTR) | |
| 2627 continue; | |
| 2628 else | |
| 2629 return items_read; | |
| 2630 } | |
| 2631 b += size*rtnval; | |
| 2632 nitem -= rtnval; | |
| 2633 items_read += rtnval; | |
| 2634 } | |
| 2635 return (items_read); | |
| 2636 #else | |
| 2637 return fread (ptr, size, nitem, stream); | |
| 2638 #endif | |
| 2639 } | |
| 771 | 2640 |
| 428 | 2641 size_t |
| 771 | 2642 retry_fwrite (const void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2643 { |
| 2644 #ifdef INTERRUPTIBLE_IO | |
| 2645 size_t rtnval; | |
| 2646 size_t items_written = 0; | |
| 442 | 2647 const char *b = (const char *) ptr; |
| 428 | 2648 |
| 2649 while (nitem > 0) | |
| 2650 { | |
| 2651 rtnval = fwrite (b, size, nitem, stream); | |
| 2652 if (rtnval == 0) | |
| 2653 { | |
| 2654 if (ferror (stream) && errno == EINTR) | |
| 2655 continue; | |
| 2656 else | |
| 2657 return items_written; | |
| 2658 } | |
| 2659 b += size*rtnval; | |
| 2660 nitem -= rtnval; | |
| 2661 items_written += rtnval; | |
| 2662 } | |
| 2663 return (items_written); | |
| 2664 #else | |
| 2665 return fwrite (ptr, size, nitem, stream); | |
| 2666 #endif | |
| 2667 } | |
| 2668 | |
| 2669 /********************* directory calls *******************/ | |
| 2670 | |
| 2671 int | |
| 867 | 2672 qxe_chdir (const Ibyte *path) |
| 428 | 2673 { |
| 771 | 2674 Extbyte *pathout; |
| 2675 PATHNAME_CONVERT_OUT (path, pathout); | |
| 442 | 2676 #ifdef WIN32_NATIVE |
| 771 | 2677 if (XEUNICODE_P) |
| 2678 return _wchdir ((const wchar_t *) pathout); | |
| 2679 else | |
| 2680 return _chdir (pathout); | |
| 428 | 2681 #else |
| 771 | 2682 return chdir (pathout); |
| 428 | 2683 #endif |
| 2684 } | |
| 771 | 2685 |
| 2686 int | |
| 2340 | 2687 qxe_mkdir (const Ibyte *path, |
| 2688 #ifdef WIN32_NATIVE | |
| 2689 mode_t UNUSED (mode) | |
| 2690 #else | |
| 2691 mode_t mode | |
| 2692 #endif | |
| 2693 ) | |
| 771 | 2694 { |
| 2695 Extbyte *pathout; | |
| 2696 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2697 #ifdef WIN32_NATIVE | |
| 2698 if (XEUNICODE_P) | |
| 2699 return _wmkdir ((const wchar_t *) pathout); | |
| 2700 else | |
| 2701 return _mkdir (pathout); | |
| 2702 #else | |
| 2703 return mkdir (pathout, mode); | |
| 2704 #endif | |
| 2705 } | |
| 2706 | |
| 428 | 2707 DIR * |
| 867 | 2708 qxe_opendir (const Ibyte *filename) |
| 428 | 2709 { |
| 771 | 2710 #ifdef WIN32_NATIVE |
| 2711 return mswindows_opendir (filename); | |
| 2712 #else | |
| 428 | 2713 DIR *rtnval; |
| 771 | 2714 Extbyte *pathout; |
| 2715 PATHNAME_CONVERT_OUT (filename, pathout); | |
| 2716 | |
| 2717 while (!(rtnval = opendir (pathout)) | |
| 428 | 2718 && (errno == EINTR)) |
| 2719 ; | |
| 2720 return rtnval; | |
| 771 | 2721 #endif /* WIN32_NATIVE */ |
| 428 | 2722 } |
| 771 | 2723 |
| 428 | 2724 DIRENTRY * |
| 771 | 2725 qxe_readdir (DIR *dirp) |
| 428 | 2726 { |
| 771 | 2727 #ifdef WIN32_NATIVE |
| 2728 return mswindows_readdir (dirp); | |
| 2729 #else /* not WIN32_NATIVE */ | |
| 428 | 2730 DIRENTRY *rtnval; |
| 2731 | |
| 2732 /* Apparently setting errno is necessary on some systems? | |
| 2733 Maybe readdir() doesn't always set errno ?! */ | |
| 2734 while (!(errno = 0, rtnval = readdir (dirp)) | |
| 2735 && (errno == EINTR)) | |
| 2736 ; | |
| 2737 #ifndef MULE | |
| 2738 return rtnval; | |
| 2739 #else /* MULE */ | |
| 2740 if (rtnval == NULL) /* End of directory */ | |
| 2741 return NULL; | |
| 2742 { | |
| 442 | 2743 const Extbyte * const external_name = (const Extbyte *) rtnval->d_name; |
| 665 | 2744 Bytecount external_len = strlen (rtnval->d_name); |
| 867 | 2745 const Ibyte *internal_name; |
| 462 | 2746 Bytecount internal_len; |
| 513 | 2747 |
| 462 | 2748 TO_INTERNAL_FORMAT (DATA, (external_name, external_len), |
| 2749 ALLOCA, (internal_name, internal_len), | |
| 2750 Qfile_name); | |
| 2751 | |
| 2752 /* check for common case of ASCII filename */ | |
| 2753 if (internal_len == external_len && | |
| 2754 !memcmp (external_name, internal_name, internal_len)) | |
| 428 | 2755 return rtnval; |
| 2756 | |
| 2757 { /* Non-ASCII filename */ | |
| 867 | 2758 static Ibyte_dynarr *internal_DIRENTRY; |
| 428 | 2759 if (!internal_DIRENTRY) |
| 867 | 2760 internal_DIRENTRY = Dynarr_new (Ibyte); |
| 428 | 2761 else |
| 2762 Dynarr_reset (internal_DIRENTRY); | |
| 2763 | |
| 867 | 2764 Dynarr_add_many (internal_DIRENTRY, (Ibyte *) rtnval, |
| 428 | 2765 offsetof (DIRENTRY, d_name)); |
| 2766 | |
| 2767 | |
| 2768 Dynarr_add_many (internal_DIRENTRY, internal_name, internal_len); | |
| 444 | 2769 Dynarr_add (internal_DIRENTRY, '\0'); /* NUL-terminate */ |
| 4967 | 2770 return (DIRENTRY *) Dynarr_begin (internal_DIRENTRY); |
| 428 | 2771 } |
| 2772 } | |
| 2773 #endif /* MULE */ | |
| 771 | 2774 #endif /* WIN32_NATIVE */ |
| 428 | 2775 } |
| 771 | 2776 |
| 428 | 2777 int |
| 771 | 2778 qxe_closedir (DIR *dirp) |
| 428 | 2779 { |
| 771 | 2780 #ifdef WIN32_NATIVE |
| 2781 return mswindows_closedir (dirp); | |
| 2782 #else /* not WIN32_NATIVE */ | |
| 428 | 2783 int rtnval; |
| 2784 | |
| 2785 while ((rtnval = closedir (dirp)) == -1 | |
| 2786 && (errno == EINTR)) | |
| 2787 ; | |
| 2788 return rtnval; | |
| 771 | 2789 #endif /* WIN32_NATIVE */ |
| 428 | 2790 } |
| 771 | 2791 |
| 428 | 2792 int |
| 867 | 2793 qxe_rmdir (const Ibyte *path) |
| 771 | 2794 { |
| 2795 Extbyte *pathout; | |
| 2796 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2797 #ifdef WIN32_NATIVE | |
| 2798 if (XEUNICODE_P) | |
| 2799 return _wrmdir ((const wchar_t *) pathout); | |
| 2800 else | |
| 2801 return _rmdir (pathout); | |
| 2802 #else | |
| 2803 return rmdir (pathout); | |
| 2804 #endif | |
| 2805 } | |
| 2806 | |
| 867 | 2807 Ibyte * |
| 771 | 2808 qxe_allocating_getcwd (void) |
| 428 | 2809 { |
| 771 | 2810 #ifdef HAVE_GETCWD |
| 2811 Bytecount cwdsize = 1024; | |
| 2812 Extbyte *cwd = xnew_array (Extbyte, cwdsize); | |
| 2813 | |
| 2814 /* Many getcwd()'s can take a NULL argument and malloc() the right amount | |
| 2815 of data, but this is non-standard. */ | |
| 2816 while (1) | |
| 2817 { | |
| 2818 #ifdef WIN32_NATIVE | |
| 2819 Extbyte *ret; | |
| 2820 | |
| 2821 if (XEUNICODE_P) | |
| 2822 ret = (Extbyte *) _wgetcwd ((wchar_t *) cwd, | |
| 2823 cwdsize / sizeof (wchar_t)); | |
| 2824 else | |
| 2825 ret = _getcwd (cwd, cwdsize); | |
| 2826 | |
| 2827 if (ret) | |
| 2828 { | |
| 867 | 2829 Ibyte *retin; |
|
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2830 retin = TSTR_TO_ITEXT_MALLOC (ret); |
|
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|
2831 xfree (cwd); |
| 771 | 2832 return retin; |
| 2833 } | |
| 2834 #else | |
| 2835 Extbyte *ret = getcwd (cwd, cwdsize); | |
| 2836 if (ret) | |
| 2837 { | |
| 867 | 2838 Ibyte *retin; |
|
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|
2839 retin = EXTERNAL_TO_ITEXT_MALLOC (ret, Qfile_name); |
|
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|
2840 xfree (cwd); |
| 771 | 2841 return retin; |
| 2842 } | |
| 2843 #endif /* WIN32_NATIVE */ | |
| 2844 | |
| 2845 if (errno == ERANGE) | |
| 2846 { | |
| 2847 cwdsize *= 2; | |
| 2848 XREALLOC_ARRAY (cwd, Extbyte, cwdsize); | |
| 2849 } | |
| 2850 else | |
| 2851 { | |
|
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|
2852 xfree (cwd); |
| 771 | 2853 return NULL; |
| 2854 } | |
| 2855 } | |
| 2856 #else | |
| 4854 | 2857 Extbyte chingame_limitos_arbitrarios[PATH_MAX_TCHAR]; |
| 867 | 2858 Ibyte *ret2; |
| 771 | 2859 |
| 2860 if (!getwd (chingame_limitos_arbitrarios)) | |
| 2861 return 0; | |
|
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|
2862 ret2 = EXTERNAL_TO_ITEXT_MALLOC (chingame_limitos_arbitrarios, Qfile_name); |
| 771 | 2863 return ret2; |
| 2864 #endif /* HAVE_GETCWD */ | |
| 428 | 2865 } |
| 2866 | |
| 2867 /***************** file-information calls ******************/ | |
| 2868 | |
| 2869 int | |
| 867 | 2870 qxe_access (const Ibyte *path, int mode) |
| 428 | 2871 { |
| 771 | 2872 #ifdef WIN32_NATIVE |
| 2873 return mswindows_access (path, mode); | |
| 2874 #else /* not WIN32_NATIVE */ | |
| 2875 Extbyte *pathout; | |
| 2876 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2877 return access (pathout, mode); | |
| 2878 #endif /* WIN32_NATIVE */ | |
| 428 | 2879 } |
| 771 | 2880 |
| 2881 #if defined (HAVE_EACCESS) | |
| 428 | 2882 int |
| 867 | 2883 qxe_eaccess (const Ibyte *path, int mode) |
| 428 | 2884 { |
| 771 | 2885 Extbyte *pathout; |
| 2886 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2887 return eaccess (pathout, mode); | |
| 428 | 2888 } |
| 771 | 2889 #endif /* defined (HAVE_EACCESS) */ |
| 2890 | |
| 428 | 2891 int |
| 867 | 2892 qxe_lstat (const Ibyte *path, struct stat *buf) |
| 428 | 2893 { |
| 771 | 2894 /* if system does not have symbolic links, it does not have lstat. |
| 2895 In that case, use ordinary stat instead. */ | |
| 2896 #ifndef S_IFLNK | |
| 2897 return qxe_stat (path, buf); | |
| 2526 | 2898 #elif defined (WIN32_NATIVE) |
| 2899 if (mswindows_shortcuts_are_symlinks) | |
| 2900 { | |
| 2901 /* We want to resolve the directory component and leave the rest | |
| 2902 alone. */ | |
| 2903 Ibyte *dirend = find_end_of_directory_component (path, qxestrlen (path)); | |
| 2904 Bytecount len; | |
| 2905 | |
| 2906 if (dirend != path) | |
| 2907 { | |
| 2908 Ibyte *resdir; | |
| 2909 Ichar lastch; | |
| 2910 DECLARE_EISTRING (resname); | |
| 2911 DECLARE_EISTRING (dir); | |
| 2912 | |
| 2913 eicpy_raw (dir, path, dirend - path); | |
| 2914 PATHNAME_RESOLVE_LINKS (eidata (dir), resdir); | |
| 2915 eicpy_rawz (resname, resdir); | |
| 2916 lastch = eigetch_char (resname, eicharlen (resname) - 1); | |
| 2917 if (!IS_DIRECTORY_SEP (lastch)) | |
| 2918 eicat_ch (resname, '\\'); | |
| 2919 eicat_rawz (resname, dirend); | |
| 2920 path = eidata (resname); | |
| 2921 } | |
| 2922 | |
| 2923 /* However, if what we are trying to stat is a link, we need to add | |
| 2924 the .LNK so that the actual file is statted. */ | |
| 2925 len = qxestrlen (path); | |
| 2926 if (len > 4 && qxestrcasecmp_ascii (path + len - 4, ".LNK")) | |
| 2927 { | |
| 2928 DECLARE_EISTRING (name2); | |
| 2929 Ibyte *resolved; | |
| 2930 | |
| 2931 eicpy_rawz (name2, path); | |
| 2932 eicat_ascii (name2, ".LNK"); | |
| 2933 resolved = mswindows_read_link (eidata (name2)); | |
| 2934 if (resolved) | |
| 2935 { | |
|
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2936 xfree (resolved); |
| 2526 | 2937 return mswindows_stat (eidata (name2), buf); |
| 2938 } | |
| 2939 } | |
| 2940 } | |
| 2941 | |
| 2942 return mswindows_stat (path, buf); | |
| 771 | 2943 #else |
| 2944 Extbyte *pathout; | |
| 2945 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2946 return lstat (pathout, buf); | |
| 2947 #endif | |
| 428 | 2948 } |
| 771 | 2949 |
| 2950 #if defined (HAVE_READLINK) | |
| 428 | 2951 int |
| 867 | 2952 qxe_readlink (const Ibyte *path, Ibyte *buf, size_t bufsiz) |
| 428 | 2953 { |
| 771 | 2954 int retval; |
| 2955 Extbyte *pathout; | |
| 2956 | |
| 2957 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2958 retval = readlink (pathout, (char *) buf, bufsiz); | |
| 2959 if (retval < 0) | |
| 2960 return retval; | |
| 2961 { | |
| 867 | 2962 Ibyte *intbuf; |
| 771 | 2963 Bytecount tamanho; |
| 2964 | |
| 2965 TO_INTERNAL_FORMAT (DATA, (buf, retval), | |
| 2966 ALLOCA, (intbuf, tamanho), Qfile_name); | |
| 2967 /* the man page says this function does not null-terminate */ | |
| 2968 if (tamanho >= (Bytecount) bufsiz) | |
| 2969 tamanho = bufsiz; | |
| 2970 memcpy (buf, intbuf, tamanho); | |
| 2971 return tamanho; | |
| 2972 } | |
| 428 | 2973 } |
| 771 | 2974 #endif /* defined (HAVE_READLINK) */ |
| 2975 | |
| 432 | 2976 int |
| 771 | 2977 qxe_fstat (int fd, struct stat *buf) |
| 432 | 2978 { |
| 442 | 2979 #ifdef WIN32_NATIVE |
| 2980 return mswindows_fstat (fd, buf); | |
| 2981 #else | |
| 432 | 2982 return fstat (fd, buf); |
| 771 | 2983 #endif /* WIN32_NATIVE */ |
| 432 | 2984 } |
| 2985 | |
| 428 | 2986 int |
| 867 | 2987 qxe_stat (const Ibyte *path, struct stat *buf) |
| 428 | 2988 { |
| 442 | 2989 #ifdef WIN32_NATIVE |
| 2526 | 2990 Ibyte *resolved; |
| 2991 PATHNAME_RESOLVE_LINKS (path, resolved); | |
| 2992 return mswindows_stat (resolved, buf); | |
| 771 | 2993 #else /* not WIN32_NATIVE */ |
| 2994 Extbyte *pathout; | |
| 2995 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2996 return stat (pathout, buf); | |
| 2997 #endif /* WIN32_NATIVE */ | |
| 428 | 2998 } |
| 2999 | |
| 771 | 3000 |
| 428 | 3001 /****************** file-manipulation calls *****************/ |
| 3002 | |
| 3003 int | |
| 867 | 3004 qxe_chmod (const Ibyte *path, mode_t mode) |
| 428 | 3005 { |
| 771 | 3006 Extbyte *pathout; |
| 3007 PATHNAME_CONVERT_OUT (path, pathout); | |
| 3008 #ifdef WIN32_NATIVE | |
| 3009 if (XEUNICODE_P) | |
| 3010 return _wchmod ((const wchar_t *) pathout, mode); | |
| 3011 else | |
| 3012 return _chmod (pathout, mode); | |
| 3013 #else | |
| 3014 return chmod (pathout, mode); | |
| 3015 #endif | |
| 428 | 3016 } |
| 771 | 3017 |
| 3018 #if defined (HAVE_LINK) | |
| 428 | 3019 int |
| 2957 | 3020 qxe_link (const Ibyte *existing, const Ibyte *new_) |
| 428 | 3021 { |
| 771 | 3022 #ifdef WIN32_NATIVE |
| 2957 | 3023 return mswindows_link (existing, new_); |
| 771 | 3024 #else /* not WIN32_NATIVE */ |
| 3025 Extbyte *existingout, *newout; | |
| 3026 PATHNAME_CONVERT_OUT (existing, existingout); | |
| 2957 | 3027 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 3028 return link (existingout, newout); |
| 3029 #endif /* WIN32_NATIVE */ | |
| 428 | 3030 } |
| 771 | 3031 #endif /* defined (HAVE_LINK) */ |
| 3032 | |
| 428 | 3033 int |
| 2957 | 3034 qxe_rename (const Ibyte *old, const Ibyte *new_) |
| 428 | 3035 { |
| 442 | 3036 #ifdef WIN32_NATIVE |
| 2957 | 3037 return mswindows_rename (old, new_); |
| 771 | 3038 #else /* not WIN32_NATIVE */ |
| 3039 Extbyte *oldout, *newout; | |
| 3040 PATHNAME_CONVERT_OUT (old, oldout); | |
| 2957 | 3041 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 3042 return rename (oldout, newout); |
| 442 | 3043 #endif /* WIN32_NATIVE */ |
| 428 | 3044 } |
| 771 | 3045 |
| 3046 #if defined (HAVE_SYMLINK) | |
| 428 | 3047 int |
| 867 | 3048 qxe_symlink (const Ibyte *name1, const Ibyte *name2) |
| 428 | 3049 { |
| 771 | 3050 Extbyte *name1out, *name2out; |
| 3051 PATHNAME_CONVERT_OUT (name1, name1out); | |
| 3052 PATHNAME_CONVERT_OUT (name2, name2out); | |
| 3053 return symlink (name1out, name2out); | |
| 428 | 3054 } |
| 771 | 3055 #endif /* defined (HAVE_SYMLINK) */ |
| 3056 | |
| 428 | 3057 int |
| 867 | 3058 qxe_unlink (const Ibyte *path) |
| 428 | 3059 { |
| 771 | 3060 #ifdef WIN32_NATIVE |
| 3061 return mswindows_unlink (path); | |
| 3062 #else /* not WIN32_NATIVE */ | |
| 3063 Extbyte *pathout; | |
| 3064 PATHNAME_CONVERT_OUT (path, pathout); | |
| 3065 return unlink (pathout); | |
| 3066 #endif /* WIN32_NATIVE */ | |
| 428 | 3067 } |
| 771 | 3068 |
| 3069 | |
| 3070 /****************** process calls *****************/ | |
| 3071 | |
| 428 | 3072 int |
| 867 | 3073 qxe_execve (const Ibyte *filename, Ibyte * const argv[], |
| 3074 Ibyte * const envp[]) | |
| 428 | 3075 { |
| 771 | 3076 int i, argc, envc; |
| 3077 Extbyte *pathext; | |
| 3078 Extbyte **new_argv; | |
| 3079 Extbyte **new_envp; | |
| 3080 | |
| 3081 PATHNAME_CONVERT_OUT (filename, pathext); | |
| 3082 | |
| 428 | 3083 for (argc = 0; argv[argc]; argc++) |
| 3084 ; | |
| 771 | 3085 new_argv = alloca_array (Extbyte *, argc + 1); |
| 428 | 3086 for (i = 0; i < argc; i++) |
|
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3087 new_argv[i] = ITEXT_TO_EXTERNAL (argv[i], Qcommand_argument_encoding); |
| 428 | 3088 new_argv[argc] = NULL; |
| 771 | 3089 |
| 3090 for (envc = 0; envp[envc]; envc++) | |
| 3091 ; | |
| 3092 new_envp = alloca_array (Extbyte *, envc + 1); | |
| 3093 for (i = 0; i < envc; i++) | |
|
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3094 new_envp[i] = ITEXT_TO_EXTERNAL (envp[i], Qenvironment_variable_encoding); |
| 771 | 3095 new_envp[envc] = NULL; |
| 3096 | |
| 1318 | 3097 #if defined (WIN32_NATIVE) |
| 3098 if (XEUNICODE_P) | |
| 3099 return _wexecve ((const wchar_t *) pathext, | |
| 3100 (const wchar_t * const *) new_argv, | |
| 3101 (const wchar_t * const *) new_envp); | |
| 3102 #endif | |
| 771 | 3103 return execve (pathext, new_argv, new_envp); |
| 3104 } | |
| 3105 | |
| 3106 pid_t | |
| 3107 qxe_getpid (void) | |
| 3108 { | |
| 3109 #ifdef WIN32_NATIVE | |
| 3110 return abs (getpid ()); | |
| 3111 #else | |
| 3112 return getpid (); | |
| 3113 #endif | |
| 428 | 3114 } |
| 771 | 3115 |
| 3116 | |
| 3117 /****************** passwd calls *****************/ | |
| 3118 | |
| 3119 struct passwd cached_pwd; | |
| 3120 | |
| 3121 static struct passwd * | |
| 3122 copy_in_passwd (struct passwd *pwd) | |
| 3123 { | |
| 3124 if (!pwd) | |
| 3125 return NULL; | |
| 3126 | |
| 3127 if (cached_pwd.pw_name) | |
|
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|
3128 xfree (cached_pwd.pw_name); |
| 771 | 3129 if (cached_pwd.pw_passwd) |
|
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3130 xfree (cached_pwd.pw_passwd); |
| 771 | 3131 if (cached_pwd.pw_gecos) |
|
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3132 xfree (cached_pwd.pw_gecos); |
| 771 | 3133 if (cached_pwd.pw_dir) |
|
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|
3134 xfree (cached_pwd.pw_dir); |
| 771 | 3135 if (cached_pwd.pw_shell) |
|
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3136 xfree (cached_pwd.pw_shell); |
| 771 | 3137 |
| 3138 cached_pwd = *pwd; | |
|
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3139 |
|
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3140 #define FROB(field, encoding) \ |
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3141 do \ |
|
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3142 { \ |
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3143 if (cached_pwd.field) \ |
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3144 cached_pwd.field = (CIbyte *) \ |
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3145 EXTERNAL_TO_ITEXT_MALLOC (cached_pwd.field, encoding); \ |
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3146 } while (0) |
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3147 |
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3148 FROB (pw_name, Quser_name_encoding); |
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3149 FROB (pw_passwd, Quser_name_encoding); |
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3150 FROB (pw_gecos, Quser_name_encoding); |
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3151 FROB (pw_dir, Qfile_name); |
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3152 FROB (pw_shell, Qfile_name); |
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3153 #undef FROB |
| 771 | 3154 return &cached_pwd; |
| 3155 } | |
| 3156 | |
| 3157 struct passwd * | |
| 867 | 3158 qxe_getpwnam (const Ibyte *name) |
| 771 | 3159 { |
| 3160 #ifdef WIN32_NATIVE | |
| 3161 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3162 return getpwnam (name); | |
| 3163 #else | |
|
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3164 Extbyte *nameext = ITEXT_TO_EXTERNAL (name, Quser_name_encoding); |
| 771 | 3165 |
| 3166 return copy_in_passwd (getpwnam (nameext)); | |
| 3167 #endif /* WIN32_NATIVE */ | |
| 3168 } | |
| 3169 | |
| 3170 struct passwd * | |
| 3171 qxe_getpwuid (uid_t uid) | |
| 3172 { | |
| 3173 #ifdef WIN32_NATIVE | |
| 3174 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3175 return getpwuid (uid); | |
| 3176 #else | |
| 3177 return copy_in_passwd (getpwuid (uid)); | |
| 3178 #endif /* WIN32_NATIVE */ | |
| 3179 } | |
| 3180 | |
| 3181 #ifndef WIN32_NATIVE | |
| 3182 | |
| 3183 struct passwd * | |
| 3184 qxe_getpwent (void) | |
| 3185 { | |
| 3186 /* No WIN32_NATIVE version of this. */ | |
| 3187 return copy_in_passwd (getpwent ()); | |
| 3188 } | |
| 3189 | |
| 3190 #endif /* not WIN32_NATIVE */ | |
| 3191 | |
| 3192 /****************** time calls *****************/ | |
| 3193 | |
| 867 | 3194 static Ibyte *ctime_static; |
| 3195 | |
| 3196 Ibyte * | |
| 771 | 3197 qxe_ctime (const time_t *t) |
| 3198 { | |
| 3199 Extbyte *str = (Extbyte *) ctime (t); | |
| 3200 if (!str) /* can happen on MS Windows */ | |
| 867 | 3201 return (Ibyte *) "Sun Jan 01 00:00:00 1970"; |
| 771 | 3202 if (ctime_static) |
|
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parents:
4967
diff
changeset
|
3203 xfree (ctime_static); |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3204 ctime_static = EXTERNAL_TO_ITEXT_MALLOC (str, Qtime_function_encoding); |
| 771 | 3205 return ctime_static; |
| 3206 } | |
| 428 | 3207 |
| 1204 | 3208 |
| 912 | 3209 /************************************************************************/ |
| 3210 /* Emulation of missing functions from wchar.h */ | |
| 3211 /************************************************************************/ | |
| 3212 | |
| 3213 #ifndef HAVE_WCHAR_H | |
| 3214 size_t | |
| 2367 | 3215 wcslen (const wchar_t *s) |
| 912 | 3216 { |
| 3700 | 3217 const wchar_t *p = s; |
| 3648 | 3218 if (s == NULL) return NULL; |
| 912 | 3219 |
| 3220 while (*p++) | |
| 3221 ; | |
| 3222 | |
| 3223 return p - s; | |
| 3224 } | |
| 3225 #endif | |
| 1204 | 3226 |
| 3227 /************************************************************************/ | |
| 3228 /* Emulation of missing functions from string.h */ | |
| 3229 /************************************************************************/ | |
| 3230 | |
| 3231 #ifndef HAVE_STRLWR | |
| 3232 char * | |
| 3233 strlwr (char *s) | |
| 3234 { | |
| 3700 | 3235 REGISTER char *c; |
| 3648 | 3236 if (s == NULL) return NULL; |
| 1271 | 3237 |
| 3238 for (c = s; *c; c++) | |
| 1204 | 3239 { |
| 1271 | 3240 *c = tolower (*c); |
| 1204 | 3241 } |
| 1271 | 3242 return s; |
| 1204 | 3243 } |
| 3244 #endif | |
| 3245 | |
| 1271 | 3246 #ifndef HAVE_STRUPR |
| 1204 | 3247 char * |
| 3248 strupr (char *s) | |
| 3249 { | |
| 1271 | 3250 REGISTER char *c; |
| 3251 | |
| 3252 for (c = s; *c; c++) | |
| 1204 | 3253 { |
| 1271 | 3254 *c = toupper (*c); |
| 1204 | 3255 } |
| 1271 | 3256 return s; |
| 1204 | 3257 } |
| 3258 #endif | |
| 912 | 3259 |
| 428 | 3260 |
| 3261 /************************************************************************/ | |
| 3262 /* Emulations of missing system calls */ | |
| 3263 /************************************************************************/ | |
| 3264 | |
| 3265 /***** (these are primarily required for USG, it seems) *****/ | |
| 3266 | |
| 3267 /* | |
| 3268 * Emulate rename using unlink/link. Note that this is | |
| 3269 * only partially correct. Also, doesn't enforce restriction | |
| 3270 * that files be of same type (regular->regular, dir->dir, etc). | |
| 3271 */ | |
| 3272 | |
| 3273 #ifndef HAVE_RENAME | |
| 3274 int | |
| 771 | 3275 rename (const Extbyte *from, const Extbyte *to) |
| 428 | 3276 { |
| 3277 if (access (from, 0) == 0) | |
| 3278 { | |
| 3279 unlink (to); | |
| 3280 if (link (from, to) == 0) | |
| 3281 if (unlink (from) == 0) | |
| 3282 return (0); | |
| 3283 } | |
| 3284 return (-1); | |
| 3285 } | |
| 3286 #endif /* HAVE_RENAME */ | |
| 3287 | |
| 3288 #ifdef HPUX | |
| 3289 #ifndef HAVE_PERROR | |
| 3290 | |
| 3291 /* HPUX curses library references perror, but as far as we know | |
| 3292 it won't be called. Anyway this definition will do for now. */ | |
| 3293 | |
| 3294 perror (void) | |
| 3295 { | |
| 3296 } | |
| 3297 | |
| 3298 #endif /* not HAVE_PERROR */ | |
| 3299 #endif /* HPUX */ | |
| 3300 | |
| 3301 #ifndef HAVE_DUP2 | |
| 3302 | |
| 3303 /* | |
| 3304 * Emulate BSD dup2. First close newd if it already exists. | |
| 3305 * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
| 3306 * until we are, then close the unsuccessful ones. | |
| 3307 */ | |
| 3308 | |
| 3309 int | |
| 3310 dup2 (int oldd, int newd) | |
| 3311 { | |
| 3312 int fd, ret; | |
| 3313 | |
| 771 | 3314 retry_close (newd); |
| 428 | 3315 |
| 3316 #ifdef F_DUPFD | |
| 3317 fd = fcntl (oldd, F_DUPFD, newd); | |
| 3318 if (fd != newd) | |
| 563 | 3319 signal_ferror_with_frob (Qfile_error, lisp_strerror (errno), |
| 3320 "can't dup2 (%i, %i)", oldd, newd); | |
| 428 | 3321 #else |
| 2957 | 3322 fd = dup (oldd); |
| 428 | 3323 if (fd == -1) |
| 3324 return -1; | |
| 2957 | 3325 if (fd == newd) |
| 3326 return newd; | |
| 3327 ret = dup2 (oldd, newd); | |
| 771 | 3328 retry_close (fd); |
| 428 | 3329 return ret; |
| 3330 #endif /* F_DUPFD */ | |
| 3331 } | |
| 3332 | |
| 3333 #endif /* not HAVE_DUP2 */ | |
| 3334 | |
| 3335 /* | |
| 3336 * Gettimeofday. Simulate as much as possible. Only accurate | |
| 3337 * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
| 3338 */ | |
| 3339 | |
| 3340 #if !defined (HAVE_GETTIMEOFDAY) | |
| 3341 | |
| 3342 int | |
| 3343 gettimeofday (struct timeval *tp, struct timezone *tzp) | |
| 3344 { | |
| 3345 extern long time (); | |
| 3346 | |
| 3347 tp->tv_sec = time ((long *)0); | |
| 3348 tp->tv_usec = 0; | |
| 3349 if (tzp != 0) | |
| 3350 tzp->tz_minuteswest = -1; | |
| 3351 return (0); | |
| 3352 } | |
| 3353 | |
| 3354 #endif /* !HAVE_GETTIMEOFDAY */ | |
| 3355 | |
| 3356 /* No need to encapsulate utime and utimes explicitly because all | |
| 3357 access to those functions goes through the following. */ | |
| 3358 | |
| 3359 int | |
| 2340 | 3360 set_file_times ( |
| 3361 #if defined (WIN32_NATIVE) || defined (HAVE_UTIME) || defined (HAVE_UTIMES) | |
| 3362 Lisp_Object path, EMACS_TIME atime, EMACS_TIME mtime | |
| 3363 #else | |
| 3364 Lisp_Object UNUSED (path), EMACS_TIME UNUSED (atime), | |
| 3365 EMACS_TIME UNUSED (mtime) | |
| 3366 #endif | |
| 3367 ) | |
| 428 | 3368 { |
| 592 | 3369 #if defined (WIN32_NATIVE) |
| 460 | 3370 struct utimbuf utb; |
| 3371 utb.actime = EMACS_SECS (atime); | |
| 3372 utb.modtime = EMACS_SECS (mtime); | |
| 592 | 3373 return mswindows_utime (path, &utb); |
| 3374 #elif defined (HAVE_UTIME) | |
| 3375 struct utimbuf utb; | |
| 3376 Extbyte *filename; | |
| 3377 utb.actime = EMACS_SECS (atime); | |
| 3378 utb.modtime = EMACS_SECS (mtime); | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3379 LISP_PATHNAME_CONVERT_OUT (path, filename); |
| 460 | 3380 return utime (filename, &utb); |
| 3381 #elif defined (HAVE_UTIMES) | |
| 428 | 3382 struct timeval tv[2]; |
| 592 | 3383 Extbyte *filename; |
| 428 | 3384 tv[0] = atime; |
| 3385 tv[1] = mtime; | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3386 LISP_PATHNAME_CONVERT_OUT (path, filename); |
| 428 | 3387 return utimes (filename, tv); |
| 460 | 3388 #else |
| 3389 /* No file times setting function available. */ | |
| 3390 return -1; | |
| 3391 #endif | |
| 428 | 3392 } |
| 3393 | |
| 3394 /* */ | |
| 3395 | |
| 3396 static long ticks_per_second; | |
| 3397 static long orig_user_ticks, orig_system_ticks; | |
| 3398 EMACS_TIME orig_real_time; | |
| 3399 | |
| 3400 static int process_times_available; | |
| 3401 | |
| 3402 /* Return the relative user and system tick count. We try to | |
| 3403 maintain calculations in terms of integers as long as possible | |
| 3404 for increased accuracy. */ | |
| 3405 | |
| 3406 static int | |
| 2340 | 3407 get_process_times_1 ( |
| 3408 #if defined (CLOCKS_PER_SEC) || defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) | |
| 3409 long *user_ticks, long *system_ticks | |
| 3410 #else | |
| 3411 long *UNUSED (user_ticks), long *UNUSED (system_ticks) | |
| 3412 #endif | |
| 3413 ) | |
| 428 | 3414 { |
| 442 | 3415 #if defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) |
| 428 | 3416 /* We have the POSIX times() function available. */ |
| 777 | 3417 /* #### Perhaps we should just use a configure test for times()? */ |
| 428 | 3418 struct tms tttt; |
| 3419 times (&tttt); | |
| 3420 *user_ticks = (long) tttt.tms_utime; | |
| 3421 *system_ticks = (long) tttt.tms_stime; | |
| 3422 return 1; | |
| 3423 #elif defined (CLOCKS_PER_SEC) | |
| 3424 *user_ticks = (long) clock (); | |
| 3425 *system_ticks = 0; | |
| 3426 return 1; | |
| 3427 #else | |
| 3428 return 0; | |
| 3429 #endif | |
| 3430 } | |
| 3431 | |
| 3432 void | |
| 3433 init_process_times_very_early (void) | |
| 3434 { | |
| 3435 #if defined (_SC_CLK_TCK) | |
| 3436 ticks_per_second = sysconf (_SC_CLK_TCK); | |
| 3437 #elif defined (CLK_TCK) | |
| 3438 ticks_per_second = CLK_TCK; | |
| 3439 #elif defined (CLOCKS_PER_SEC) | |
| 3440 ticks_per_second = CLOCKS_PER_SEC; | |
| 3441 #endif | |
| 3442 | |
| 3443 process_times_available = get_process_times_1 (&orig_user_ticks, | |
| 3444 &orig_system_ticks); | |
| 3445 EMACS_GET_TIME (orig_real_time); | |
| 3446 } | |
| 3447 | |
| 3448 /* Return the user and system times used up by this process so far. */ | |
| 3449 void | |
| 3450 get_process_times (double *user_time, double *system_time, double *real_time) | |
| 3451 { | |
| 3452 EMACS_TIME curr_real_time; | |
| 3453 EMACS_TIME elapsed_time; | |
| 3454 long curr_user_ticks, curr_system_ticks; | |
| 3455 | |
| 3456 EMACS_GET_TIME (curr_real_time); | |
| 3457 EMACS_SUB_TIME (elapsed_time, curr_real_time, orig_real_time); | |
| 3458 *real_time = (EMACS_SECS (elapsed_time) | |
| 3459 + ((double) EMACS_USECS (elapsed_time)) / 1000000); | |
| 3460 if (get_process_times_1 (&curr_user_ticks, &curr_system_ticks)) | |
| 3461 { | |
| 3462 *user_time = (((double) (curr_user_ticks - orig_user_ticks)) | |
| 3463 / ticks_per_second); | |
| 3464 *system_time = (((double) (curr_system_ticks - orig_system_ticks)) | |
| 3465 / ticks_per_second); | |
| 3466 } | |
| 3467 else | |
| 3468 { | |
| 3469 /* A lame OS */ | |
| 3470 *user_time = *real_time; | |
| 3471 *system_time = 0; | |
| 3472 } | |
| 3473 } | |
| 3474 | |
| 3475 #ifndef HAVE_RANDOM | |
| 3476 #ifdef random | |
| 3477 #define HAVE_RANDOM | |
| 3478 #endif | |
| 3479 #endif | |
| 3480 | |
| 3481 /* Figure out how many bits the system's random number generator uses. | |
| 3482 `random' and `lrand48' are assumed to return 31 usable bits. | |
| 3483 BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
| 3484 so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
| 3485 | |
| 3486 #ifndef RAND_BITS | |
| 3487 # ifdef HAVE_RANDOM | |
| 3488 # define RAND_BITS 31 | |
| 3489 # else /* !HAVE_RANDOM */ | |
| 3490 # ifdef HAVE_LRAND48 | |
| 3491 # define RAND_BITS 31 | |
| 3492 # define random lrand48 | |
| 3493 # else /* !HAVE_LRAND48 */ | |
| 3494 # define RAND_BITS 15 | |
| 3495 # if RAND_MAX == 32767 | |
| 3496 # define random rand | |
| 3497 # else /* RAND_MAX != 32767 */ | |
| 3498 # if RAND_MAX == 2147483647 | |
| 3499 # define random() (rand () >> 16) | |
| 3500 # else /* RAND_MAX != 2147483647 */ | |
| 3501 # ifdef USG | |
| 3502 # define random rand | |
| 3503 # else | |
| 3504 # define random() (rand () >> 16) | |
| 3505 # endif /* !BSD */ | |
| 3506 # endif /* RAND_MAX != 2147483647 */ | |
| 3507 # endif /* RAND_MAX != 32767 */ | |
| 3508 # endif /* !HAVE_LRAND48 */ | |
| 3509 # endif /* !HAVE_RANDOM */ | |
| 3510 #endif /* !RAND_BITS */ | |
| 3511 | |
| 3512 void | |
| 3513 seed_random (long arg) | |
| 3514 { | |
| 3515 #ifdef HAVE_RANDOM | |
| 3516 srandom ((unsigned int)arg); | |
| 3517 #else | |
| 3518 # ifdef HAVE_LRAND48 | |
| 3519 srand48 (arg); | |
| 3520 # else | |
| 3521 srand ((unsigned int)arg); | |
| 3522 # endif | |
| 3523 #endif | |
| 1983 | 3524 #ifdef HAVE_BIGNUM |
| 3525 bignum_random_seed ((unsigned long) arg); | |
| 3526 #endif | |
| 428 | 3527 } |
| 3528 | |
| 3529 /* | |
| 3530 * Build a full Emacs-sized word out of whatever we've got. | |
| 3531 * This suffices even for a 64-bit architecture with a 15-bit rand. | |
| 3532 */ | |
| 3533 long | |
| 3534 get_random (void) | |
| 3535 { | |
| 3536 long val = random (); | |
| 2039 | 3537 #if INT_VALBITS > RAND_BITS |
| 428 | 3538 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3539 #if INT_VALBITS > 2*RAND_BITS |
| 428 | 3540 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3541 #if INT_VALBITS > 3*RAND_BITS |
| 428 | 3542 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3543 #if INT_VALBITS > 4*RAND_BITS |
| 428 | 3544 val = (val << RAND_BITS) ^ random (); |
| 3545 #endif /* need at least 5 */ | |
| 3546 #endif /* need at least 4 */ | |
| 3547 #endif /* need at least 3 */ | |
| 3548 #endif /* need at least 2 */ | |
| 2039 | 3549 return val & (EMACS_INT) ((1UL << INT_VALBITS) - 1); |
| 428 | 3550 } |
| 3551 | |
| 3552 | |
| 3553 /************************************************************************/ | |
| 3554 /* Strings corresponding to defined signals */ | |
| 3555 /************************************************************************/ | |
| 3556 | |
| 2762 | 3557 #if (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) |
| 428 | 3558 |
| 442 | 3559 #if defined(WIN32_NATIVE) || defined(CYGWIN) |
| 3560 const char *sys_siglist[] = | |
| 428 | 3561 { |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3562 /* @@@begin-snarf@@@ */ |
| 428 | 3563 "bum signal!!", |
| 3564 "hangup", | |
| 3565 "interrupt", | |
| 3566 "quit", | |
| 3567 "illegal instruction", | |
| 3568 "trace trap", | |
| 3569 "iot instruction", | |
| 3570 "emt instruction", | |
| 3571 "floating point exception", | |
| 3572 "kill", | |
| 3573 "bus error", | |
| 3574 "segmentation violation", | |
| 3575 "bad argument to system call", | |
| 3576 "write on a pipe with no one to read it", | |
| 3577 "alarm clock", | |
| 3578 "software termination signal from kill", | |
| 3579 "status signal", | |
| 3580 "sendable stop signal not from tty", | |
| 3581 "stop signal from tty", | |
| 3582 "continue a stopped process", | |
| 3583 "child status has changed", | |
| 3584 "background read attempted from control tty", | |
| 3585 "background write attempted from control tty", | |
| 3586 "input record available at control tty", | |
| 3587 "exceeded CPU time limit", | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3588 "exceeded file size limit", |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3589 /* @@@end-snarf@@@ */ |
| 428 | 3590 }; |
| 3591 #endif | |
| 3592 | |
| 3593 #ifdef USG | |
| 3594 #ifdef AIX | |
| 442 | 3595 const char *sys_siglist[NSIG + 1] = |
| 428 | 3596 { |
| 3597 /* AIX has changed the signals a bit */ | |
|
4952
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3598 /* @@@begin-snarf@@@ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3599 "bogus signal", /* 0 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3600 "hangup", /* 1 SIGHUP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3601 "interrupt", /* 2 SIGINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3602 "quit", /* 3 SIGQUIT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3603 "illegal instruction", /* 4 SIGILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3604 "trace trap", /* 5 SIGTRAP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3605 "IOT instruction", /* 6 SIGIOT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3606 "crash likely", /* 7 SIGDANGER */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3607 "floating point exception", /* 8 SIGFPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3608 "kill", /* 9 SIGKILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3609 "bus error", /* 10 SIGBUS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3610 "segmentation violation", /* 11 SIGSEGV */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3611 "bad argument to system call", /* 12 SIGSYS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3612 "write on a pipe with no one to read it", /* 13 SIGPIPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3613 "alarm clock", /* 14 SIGALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3614 "software termination signal", /* 15 SIGTERM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3615 "user defined signal 1", /* 16 SIGUSR1 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3616 "user defined signal 2", /* 17 SIGUSR2 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3617 "death of a child", /* 18 SIGCLD */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3618 "power-fail restart", /* 19 SIGPWR */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3619 "bogus signal", /* 20 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3620 "bogus signal", /* 21 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3621 "bogus signal", /* 22 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3622 "bogus signal", /* 23 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3623 "bogus signal", /* 24 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3624 "LAN I/O interrupt", /* 25 SIGAIO */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3625 "PTY I/O interrupt", /* 26 SIGPTY */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3626 "I/O intervention required", /* 27 SIGIOINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3627 /* @@@end-snarf@@@ */ |
| 428 | 3628 0 |
| 3629 }; | |
| 3630 #else /* USG, not AIX */ | |
| 442 | 3631 const char *sys_siglist[NSIG + 1] = |
| 428 | 3632 { |
|
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|
3633 /* @@@begin-snarf@@@ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
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parents:
4854
diff
changeset
|
3634 "bogus signal", /* 0 */ |
|
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
changeset
|
3635 "hangup", /* 1 SIGHUP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
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|
3636 "interrupt", /* 2 SIGINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
changeset
|
3637 "quit", /* 3 SIGQUIT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3638 "illegal instruction", /* 4 SIGILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3639 "trace trap", /* 5 SIGTRAP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3640 "IOT instruction", /* 6 SIGIOT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3641 "EMT instruction", /* 7 SIGEMT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3642 "floating point exception", /* 8 SIGFPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
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|
3643 "kill", /* 9 SIGKILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
changeset
|
3644 "bus error", /* 10 SIGBUS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3645 "segmentation violation", /* 11 SIGSEGV */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
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|
3646 "bad argument to system call", /* 12 SIGSYS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3647 "write on a pipe with no one to read it", /* 13 SIGPIPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
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|
3648 "alarm clock", /* 14 SIGALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3649 "software termination signal", /* 15 SIGTERM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3650 "user defined signal 1", /* 16 SIGUSR1 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3651 "user defined signal 2", /* 17 SIGUSR2 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3652 "death of a child", /* 18 SIGCLD */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3653 "power-fail restart", /* 19 SIGPWR */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
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|
3654 #ifdef sun |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3655 "window size changed", /* 20 SIGWINCH */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3656 "urgent socket condition", /* 21 SIGURG */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3657 "pollable event occurred", /* 22 SIGPOLL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3658 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3659 "user stop requested from tty", /* 24 SIGTSTP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3660 "stopped process has been continued", /* 25 SIGCONT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3661 "background tty read attempted", /* 26 SIGTTIN */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3662 "background tty write attempted", /* 27 SIGTTOU */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3663 "virtual timer expired", /* 28 SIGVTALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3664 "profiling timer expired", /* 29 SIGPROF */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3665 "exceeded cpu limit", /* 30 SIGXCPU */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3666 "exceeded file size limit", /* 31 SIGXFSZ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3667 "process's lwps are blocked", /* 32 SIGWAITING */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
3668 "special signal used by thread library", /* 33 SIGLWP */ |
| 428 | 3669 #ifdef SIGFREEZE |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
changeset
|
3670 "special signal used by CPR", /* 34 SIGFREEZE */ |
| 428 | 3671 #endif |
| 3672 #ifdef SIGTHAW | |
|
4952
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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changeset
|
3673 "special signal used by CPR", /* 35 SIGTHAW */ |
| 428 | 3674 #endif |
| 3675 #endif /* sun */ | |
|
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Ben Wing <ben@xemacs.org>
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|
3676 /* @@@end-snarf@@@ */ |
| 428 | 3677 0 |
| 3678 }; | |
| 3679 #endif /* not AIX */ | |
| 3680 #endif /* USG */ | |
| 3681 | |
| 2762 | 3682 #endif /* (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) */ |
| 428 | 3683 |
| 3684 | |
| 3685 /************************************************************************/ | |
| 3686 /* Directory routines for systems that don't have them */ | |
| 3687 /************************************************************************/ | |
| 3688 | |
| 3689 #ifdef SYSV_SYSTEM_DIR | |
| 3690 | |
| 3691 #include <dirent.h> | |
| 3692 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3693 #if !defined(HAVE_CLOSEDIR) |
| 428 | 3694 int |
| 3695 closedir (DIR *dirp) /* stream from opendir */ | |
| 3696 { | |
| 3697 int rtnval; | |
| 3698 | |
| 771 | 3699 rtnval = retry_close (dirp->dd_fd); |
| 428 | 3700 |
| 3701 /* Some systems (like Solaris) allocate the buffer and the DIR all | |
| 3702 in one block. Why in the world are we freeing this ourselves | |
| 3703 anyway? */ | |
| 3704 #if ! (defined (sun) && defined (USG5_4)) | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3705 xfree (dirp->dd_buf); /* directory block defined in <dirent.h> */ |
| 428 | 3706 #endif |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3707 xfree (dirp); |
| 428 | 3708 return (rtnval); |
| 3709 } | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3710 #endif /* not HAVE_CLOSEDIR */ |
| 428 | 3711 #endif /* SYSV_SYSTEM_DIR */ |
| 3712 | |
| 3713 #ifdef NONSYSTEM_DIR_LIBRARY | |
| 3714 | |
| 3715 DIR * | |
| 442 | 3716 opendir (const char *filename) /* name of directory */ |
| 428 | 3717 { |
| 3718 DIR *dirp; /* -> malloc'ed storage */ | |
| 3719 int fd; /* file descriptor for read */ | |
| 3720 struct stat sbuf; /* result of fstat */ | |
| 3721 | |
| 771 | 3722 fd = open (filename, O_RDONLY); |
| 428 | 3723 if (fd < 0) |
| 3724 return 0; | |
| 3725 | |
| 3726 if (fstat (fd, &sbuf) < 0 | |
| 3727 || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
| 3728 || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
| 3729 { | |
| 771 | 3730 retry_close (fd); |
| 428 | 3731 return 0; /* bad luck today */ |
| 3732 } | |
| 3733 | |
| 3734 dirp->dd_fd = fd; | |
| 3735 dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
| 3736 | |
| 3737 return dirp; | |
| 3738 } | |
| 3739 | |
| 3740 void | |
| 3741 closedir (DIR *dirp) /* stream from opendir */ | |
| 3742 { | |
| 771 | 3743 retry_close (dirp->dd_fd); |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3744 xfree (dirp); |
| 428 | 3745 } |
| 3746 | |
| 3747 | |
| 3748 #define DIRSIZ 14 | |
| 3749 struct olddir | |
| 3750 { | |
| 3751 ino_t od_ino; /* inode */ | |
| 3752 char od_name[DIRSIZ]; /* filename */ | |
| 3753 }; | |
| 3754 | |
| 3755 static struct direct dir_static; /* simulated directory contents */ | |
| 3756 | |
| 3757 /* ARGUSED */ | |
| 3758 struct direct * | |
| 3759 readdir (DIR *dirp) /* stream from opendir */ | |
| 3760 { | |
| 3761 struct olddir *dp; /* -> directory data */ | |
| 3762 | |
| 3763 for (; ;) | |
| 3764 { | |
| 3765 if (dirp->dd_loc >= dirp->dd_size) | |
| 3766 dirp->dd_loc = dirp->dd_size = 0; | |
| 3767 | |
| 3768 if (dirp->dd_size == 0 /* refill buffer */ | |
| 771 | 3769 && (dirp->dd_size = |
| 3770 retry_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
| 428 | 3771 return 0; |
| 3772 | |
| 3773 dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
| 3774 dirp->dd_loc += sizeof (struct olddir); | |
| 3775 | |
| 3776 if (dp->od_ino != 0) /* not deleted entry */ | |
| 3777 { | |
| 3778 dir_static.d_ino = dp->od_ino; | |
| 3779 strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
| 3780 dir_static.d_name[DIRSIZ] = '\0'; | |
| 3781 dir_static.d_namlen = strlen (dir_static.d_name); | |
| 3782 dir_static.d_reclen = sizeof (struct direct) | |
| 3783 - MAXNAMLEN + 3 | |
| 3784 + dir_static.d_namlen - dir_static.d_namlen % 4; | |
| 3785 return &dir_static; /* -> simulated structure */ | |
| 3786 } | |
| 3787 } | |
| 3788 } | |
| 3789 | |
| 3790 | |
| 3791 #endif /* NONSYSTEM_DIR_LIBRARY */ | |
| 3792 | |
| 3793 | |
| 3794 /* mkdir and rmdir functions, for systems which don't have them. */ | |
| 3795 | |
| 3796 #ifndef HAVE_MKDIR | |
| 3797 /* | |
| 3798 * Written by Robert Rother, Mariah Corporation, August 1985. | |
| 3799 * | |
| 3800 * If you want it, it's yours. All I ask in return is that if you | |
| 3801 * figure out how to do this in a Bourne Shell script you send me | |
| 3802 * a copy. | |
| 3803 * sdcsvax!rmr or rmr@uscd | |
| 3804 * | |
| 3805 * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
| 3806 * subroutine. 11Mar86; hoptoad!gnu | |
| 3807 * | |
| 3808 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
| 3809 * subroutine didn't return EEXIST. It does now. | |
| 3810 */ | |
| 3811 | |
| 3812 /* | |
| 3813 * Make a directory. | |
| 3814 */ | |
| 3815 #ifdef MKDIR_PROTOTYPE | |
| 3816 MKDIR_PROTOTYPE | |
| 3817 #else | |
| 3818 int | |
| 442 | 3819 mkdir (const char *dpath, int dmode) |
| 428 | 3820 #endif |
| 3821 { | |
| 3822 int cpid, status, fd; | |
| 3823 struct stat statbuf; | |
| 3824 | |
| 442 | 3825 if (stat (dpath, &statbuf) == 0) /* we do want stat() here */ |
| 428 | 3826 { |
| 3827 errno = EEXIST; /* Stat worked, so it already exists */ | |
| 3828 return -1; | |
| 3829 } | |
| 3830 | |
| 3831 /* If stat fails for a reason other than non-existence, return error */ | |
| 3832 if (errno != ENOENT) | |
| 3833 return -1; | |
| 3834 | |
| 3835 synch_process_alive = 1; | |
| 3836 switch (cpid = fork ()) | |
| 3837 { | |
| 3838 | |
| 3839 case -1: /* Error in fork() */ | |
| 3840 return -1; /* Errno is set already */ | |
| 3841 | |
| 3842 case 0: /* Child process */ | |
| 3843 { | |
| 3844 /* | |
| 3845 * Cheap hack to set mode of new directory. Since this | |
| 3846 * child process is going away anyway, we zap its umask. | |
| 3847 * ####, this won't suffice to set SUID, SGID, etc. on this | |
| 3848 * directory. Does anybody care? | |
| 3849 */ | |
| 3850 status = umask (0); /* Get current umask */ | |
| 3851 status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
| 771 | 3852 fd = open ("/dev/null", O_RDWR); |
| 428 | 3853 if (fd >= 0) |
| 3854 { | |
| 3855 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3856 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3857 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3858 } | |
| 3859 execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); | |
| 3860 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3861 } | |
| 3862 | |
| 3863 default: /* Parent process */ | |
| 3864 wait_for_termination (cpid); | |
| 3865 } | |
| 3866 | |
| 3867 if (synch_process_death != 0 || synch_process_retcode != 0) | |
| 3868 { | |
| 3869 errno = EIO; /* We don't know why, but */ | |
| 3870 return -1; /* /bin/mkdir failed */ | |
| 3871 } | |
| 3872 | |
| 3873 return 0; | |
| 3874 } | |
| 3875 #endif /* not HAVE_MKDIR */ | |
| 3876 | |
| 3877 #ifndef HAVE_RMDIR | |
| 3878 int | |
| 442 | 3879 rmdir (const char *dpath) |
| 428 | 3880 { |
| 3881 int cpid, status, fd; | |
| 3882 struct stat statbuf; | |
| 3883 | |
| 442 | 3884 if (stat (dpath, &statbuf) != 0) /* we do want stat() here */ |
| 428 | 3885 { |
| 3886 /* Stat just set errno. We don't have to */ | |
| 3887 return -1; | |
| 3888 } | |
| 3889 | |
| 3890 synch_process_alive = 1; | |
| 3891 switch (cpid = fork ()) | |
| 3892 { | |
| 3893 | |
| 3894 case -1: /* Error in fork() */ | |
| 3895 return (-1); /* Errno is set already */ | |
| 3896 | |
| 3897 case 0: /* Child process */ | |
| 771 | 3898 fd = open ("/dev/null", O_RDWR); |
| 428 | 3899 if (fd >= 0) |
| 3900 { | |
| 3901 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3902 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3903 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3904 } | |
| 3905 execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); | |
| 3906 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3907 | |
| 3908 default: /* Parent process */ | |
| 3909 wait_for_termination (cpid); | |
| 3910 } | |
| 3911 | |
| 3912 if (synch_process_death != 0 || | |
| 3913 synch_process_retcode != 0) | |
| 3914 { | |
| 3915 errno = EIO; /* We don't know why, but */ | |
| 3916 return -1; /* /bin/rmdir failed */ | |
| 3917 } | |
| 3918 | |
| 3919 return 0; | |
| 3920 } | |
| 3921 #endif /* !HAVE_RMDIR */ | |
| 3922 | |
| 3923 | |
| 3924 /************************************************************************/ | |
| 3925 /* Misc. SunOS crap */ | |
| 3926 /************************************************************************/ | |
| 3927 | |
| 3928 #ifdef USE_DL_STUBS | |
| 3929 | |
| 3930 /* These are included on Sunos 4.1 when we do not use shared libraries. | |
| 3931 X11 libraries may refer to these functions but (we hope) do not | |
| 3932 actually call them. */ | |
| 3933 | |
| 3934 void * | |
| 3935 dlopen (void) | |
| 3936 { | |
| 3937 return 0; | |
| 3938 } | |
| 3939 | |
| 3940 void * | |
| 3941 dlsym (void) | |
| 3942 { | |
| 3943 return 0; | |
| 3944 } | |
| 3945 | |
| 3946 int | |
| 3947 dlclose (void) | |
| 3948 { | |
| 3949 return -1; | |
| 3950 } | |
| 3951 | |
| 3952 #endif /* USE_DL_STUBS */ |