Mercurial > hg > xemacs-beta
annotate src/sysdep.c @ 4760:217abcf015c4
sys_subshell() is needed for WIndows native builds
| author | Vin Shelton <acs@xemacs.org> |
|---|---|
| date | Thu, 19 Nov 2009 18:21:06 -0500 |
| parents | aa5ed11f473b |
| children | b3ea9c582280 |
| 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. | |
| 2367 | 4 Copyright (C) 2000, 2001, 2002, 2003, 2004 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 | |
| 2340 | 111 #ifdef HAVE_TTY |
| 112 #define USED_IF_TTY(decl) decl | |
| 113 #else | |
| 114 #define USED_IF_TTY(decl) UNUSED (decl) | |
| 115 #endif | |
| 116 | |
| 428 | 117 |
| 118 /************************************************************************/ | |
| 119 /* subprocess control */ | |
| 120 /************************************************************************/ | |
| 121 | |
| 853 | 122 #ifdef NEED_SYNC_PROCESS_CODE |
| 123 | |
| 124 /* True iff we are about to fork off a synchronous process or if we | |
| 125 are waiting for it. */ | |
| 126 volatile int synch_process_alive; | |
| 127 | |
| 128 /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
| 129 const char *synch_process_death; | |
| 130 | |
| 131 /* If synch_process_death is zero, | |
| 132 this is exit code of synchronous subprocess. */ | |
| 133 int synch_process_retcode; | |
| 134 | |
| 135 #endif /* NEED_SYNC_PROCESS_CODE */ | |
| 136 | |
| 428 | 137 #ifdef HAVE_TTY |
| 138 | |
| 139 #ifdef SIGTSTP | |
| 140 | |
| 141 /* Arrange for character C to be read as the next input from | |
| 142 the terminal. */ | |
| 143 void | |
| 2311 | 144 stuff_char (struct console *con, |
| 145 #ifdef TIOCSTI | |
| 146 int c | |
| 147 #else | |
| 148 int UNUSED (c) | |
| 149 #endif | |
| 150 ) | |
| 428 | 151 { |
| 152 int input_fd; | |
| 153 | |
| 154 assert (CONSOLE_TTY_P (con)); | |
| 155 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
| 156 /* Should perhaps error if in batch mode */ | |
| 157 #ifdef TIOCSTI | |
| 158 ioctl (input_fd, TIOCSTI, &c); | |
| 159 #else /* no TIOCSTI */ | |
| 563 | 160 invalid_operation ("Cannot stuff terminal input characters in this version of Unix.", Qunbound); |
| 428 | 161 #endif /* no TIOCSTI */ |
| 162 } | |
| 163 | |
| 164 #endif /* SIGTSTP */ | |
| 165 | |
| 166 #endif /* HAVE_TTY */ | |
| 167 | |
| 168 void | |
| 2311 | 169 set_exclusive_use ( |
| 170 #ifdef FIOCLEX | |
| 171 int fd | |
| 172 #else | |
| 173 int UNUSED (fd) | |
| 174 #endif | |
| 175 ) | |
| 428 | 176 { |
| 177 #ifdef FIOCLEX | |
| 178 ioctl (fd, FIOCLEX, 0); | |
| 179 #endif | |
| 180 /* Ok to do nothing if this feature does not exist */ | |
| 181 } | |
| 182 | |
| 183 void | |
| 2340 | 184 set_descriptor_non_blocking ( |
| 185 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX) || defined (F_SETFL) | |
| 186 int fd | |
| 187 #else | |
| 188 int UNUSED (fd) | |
| 189 #endif | |
| 190 ) | |
| 428 | 191 { |
| 192 /* Stride people say it's a mystery why this is needed | |
| 193 as well as the O_NDELAY, but that it fails without this. */ | |
| 194 /* For AIX: Apparently need this for non-blocking reads on sockets. | |
| 195 It seems that O_NONBLOCK applies only to FIFOs? From | |
| 196 lowry@watson.ibm.com (Andy Lowry). */ | |
| 197 /* #### Should this be conditionalized on FIONBIO? */ | |
| 872 | 198 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX) |
| 428 | 199 { |
| 200 int one = 1; | |
| 201 ioctl (fd, FIONBIO, &one); | |
| 202 } | |
| 203 #endif | |
| 204 | |
| 205 #ifdef F_SETFL | |
| 206 fcntl (fd, F_SETFL, O_NONBLOCK); | |
| 207 #endif | |
| 208 } | |
| 209 | |
| 853 | 210 #ifdef NEED_SYNC_PROCESS_CODE /* #### Used only on super-ancient systems */ |
| 211 | |
| 212 static void | |
| 814 | 213 wait_for_termination (int pid) |
| 428 | 214 { |
| 215 /* #### With the new improved SIGCHLD handling stuff, there is much | |
| 216 less danger of race conditions and some of the comments below | |
| 217 don't apply. This should be updated. */ | |
| 218 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
219 #if defined (HAVE_WAITPID) |
| 428 | 220 /* Note that, whenever any subprocess terminates (asynch. or synch.), |
| 221 the SIGCHLD handler will be called and it will call wait(). Thus | |
| 222 we cannot just call wait() ourselves, and we can't block SIGCHLD | |
| 223 and then call wait(), because then if an asynch. process dies | |
| 224 while we're waiting for our synch. process, Emacs will never | |
| 225 notice that the asynch. process died. | |
| 226 | |
| 227 So, the general approach we take is to repeatedly block until a | |
| 228 signal arrives, and then check if our process died using kill | |
| 229 (pid, 0). (We could also check the value of `synch_process_alive', | |
| 230 since the SIGCHLD handler will reset that and we know that we're | |
| 231 only being called on synchronous processes, but this approach is | |
| 232 safer. I don't trust the proper delivery of SIGCHLD. | |
| 233 | |
| 234 Note also that we cannot use any form of waitpid(). A loop with | |
| 235 WNOHANG will chew up CPU time; better to use sleep(). A loop | |
| 236 without WNOWAIT will screw up the SIGCHLD handler (actually this | |
| 237 is not true, if you duplicate the exit-status-reaping code; see | |
| 238 below). A loop with WNOWAIT will result in a race condition if | |
| 239 the process terminates between the process-status check and the | |
| 240 call to waitpid(). */ | |
| 241 | |
| 242 /* Formerly, immediate_quit was set around this function call, but | |
| 243 that could lead to problems if the QUIT happened when SIGCHLD was | |
| 244 blocked -- it would remain blocked. Yet another reason why | |
| 245 immediate_quit is a bad idea. In any case, there is no reason to | |
| 246 resort to this because either the SIGIO or the SIGALRM will stop | |
| 247 the block in EMACS_WAIT_FOR_SIGNAL(). */ | |
| 248 | |
| 249 /* Apparently there are bugs on some systems with the second method | |
| 250 used below (the EMACS_BLOCK_SIGNAL method), whereby zombie | |
| 251 processes get left around. It appears in those cases that the | |
| 252 SIGCHLD handler is never getting invoked. It's not clear whether | |
| 253 this is an Emacs bug or a kernel bug or both: on HPUX this | |
| 254 problem is observed only with XEmacs, but under Solaris 2.4 all | |
| 255 sorts of different programs have problems with zombies. The | |
| 256 method we use here does not require a working SIGCHLD (but will | |
| 257 not break if it is working), and should be safe. */ | |
| 258 /* | |
| 259 We use waitpid(), contrary to the remarks above. There is no | |
| 260 race condition, because the three situations when sigchld_handler | |
| 261 is invoked should be handled OK: | |
| 262 | |
| 263 - handler invoked before waitpid(): In this case, subprocess | |
| 264 status will be set by sigchld_handler. waitpid() here will | |
| 265 return -1 with errno set to ECHILD, which is a valid exit | |
| 266 condition. | |
| 267 | |
| 268 - handler invoked during waitpid(): as above, except that errno | |
| 269 here will be set to EINTR. This will cause waitpid() to be | |
| 270 called again, and this time it will exit with ECHILD. | |
| 271 | |
| 272 - handler invoked after waitpid(): The following code will reap | |
| 273 the subprocess. In the handler, wait() will return -1 because | |
| 274 there is no child to reap, and the handler will exit without | |
| 275 modifying child subprocess status. */ | |
| 276 int ret, status; | |
| 277 | |
| 278 /* Because the SIGCHLD handler can potentially reap the synchronous | |
| 279 subprocess, we should take care of that. */ | |
| 280 | |
| 281 /* Will stay in the do loop as long as: | |
| 282 1. Process is alive | |
| 283 2. Ctrl-G is not pressed */ | |
| 284 do | |
| 285 { | |
| 286 QUIT; | |
| 287 ret = waitpid (pid, &status, 0); | |
| 288 /* waitpid returns 0 if the process is still alive. */ | |
| 289 } | |
| 290 while (ret == 0 || (ret == -1 && errno == EINTR)); | |
| 291 | |
| 292 if (ret == pid) /* Success */ | |
| 293 /* Set synch process globals. This is can also happen | |
| 294 in sigchld_handler, and that code is duplicated. */ | |
| 295 { | |
| 296 synch_process_alive = 0; | |
| 297 if (WIFEXITED (status)) | |
| 298 synch_process_retcode = WEXITSTATUS (status); | |
| 299 else if (WIFSIGNALED (status)) | |
| 300 synch_process_death = signal_name (WTERMSIG (status)); | |
| 301 } | |
| 302 /* On exiting the loop, ret will be -1, with errno set to ECHILD if | |
| 303 the child has already been reaped, e.g. in the signal handler. */ | |
| 304 | |
| 305 /* Otherwise, we've had some error condition here. | |
| 306 Per POSIX, the only other possibilities are: | |
| 307 - EFAULT (bus error accessing arg 2) or | |
| 308 - EINVAL (incorrect arguments), | |
| 309 which are both program bugs. | |
| 310 | |
| 311 Since implementations may add their own error indicators on top, | |
| 312 we ignore it by default. */ | |
| 313 #elif defined (EMACS_BLOCK_SIGNAL) && !defined (BROKEN_WAIT_FOR_SIGNAL) && defined (SIGCHLD) | |
| 314 while (1) | |
| 315 { | |
| 316 static int wait_debugging = 0; /* Set nonzero to make following | |
| 317 function work under dbx (at least for bsd). */ | |
| 318 QUIT; | |
| 319 if (wait_debugging) | |
| 320 return; | |
| 321 | |
| 322 EMACS_BLOCK_SIGNAL (SIGCHLD); | |
| 323 /* Block SIGCHLD from happening during this check, | |
| 324 to avoid race conditions. */ | |
| 325 if (kill (pid, 0) < 0) | |
| 326 { | |
| 327 EMACS_UNBLOCK_SIGNAL (SIGCHLD); | |
| 328 return; | |
| 329 } | |
| 330 else | |
| 331 /* WARNING: Whatever this macro does *must* not allow SIGCHLD | |
| 332 to happen between the time that it's reenabled and when we | |
| 333 begin to block. Otherwise we may end up blocking for a | |
| 334 signal that has already arrived and isn't coming again. | |
| 335 Can you say "race condition"? | |
| 336 | |
| 337 I assume that the system calls sigpause() or sigsuspend() | |
| 338 to provide this atomicness. If you're getting hangs in | |
| 339 sigpause()/sigsuspend(), then your OS doesn't implement | |
| 340 this properly (this applies under hpux9, for example). | |
| 341 Try defining BROKEN_WAIT_FOR_SIGNAL. */ | |
| 342 EMACS_WAIT_FOR_SIGNAL (SIGCHLD); | |
| 343 } | |
| 853 | 344 #else /* not HAVE_WAITPID and (not EMACS_BLOCK_SIGNAL or BROKEN_WAIT_FOR_SIGNAL) */ |
| 428 | 345 /* This approach is kind of cheesy but is guaranteed(?!) to work |
| 346 for all systems. */ | |
| 347 while (1) | |
| 348 { | |
| 349 QUIT; | |
| 350 if (kill (pid, 0) < 0) | |
| 351 return; | |
| 771 | 352 stop_interrupts (); |
| 353 sleep (1); | |
| 354 start_interrupts (); | |
| 428 | 355 } |
| 356 #endif /* OS features */ | |
| 357 } | |
| 358 | |
| 853 | 359 #endif /* NEED_SYNC_PROCESS_CODE */ |
| 428 | 360 |
| 361 /* | |
| 362 * flush any pending output | |
| 363 * (may flush input as well; it does not matter the way we use it) | |
| 364 */ | |
| 365 | |
| 366 void | |
| 2286 | 367 flush_pending_output ( |
| 368 #if !defined (HAVE_TERMIOS) && (defined (TCFLSH) || defined (TIOCFLUSH)) | |
| 369 int channel | |
| 370 #else | |
| 371 int UNUSED (channel) | |
| 372 #endif | |
| 373 ) | |
| 428 | 374 { |
| 375 #ifdef HAVE_TERMIOS | |
| 376 /* If we try this, we get hit with SIGTTIN, because | |
| 377 the child's tty belongs to the child's pgrp. */ | |
| 378 #elif defined (TCFLSH) | |
| 379 ioctl (channel, TCFLSH, 1); | |
| 380 #elif defined (TIOCFLUSH) | |
| 381 int zero = 0; | |
| 382 /* 3rd arg should be ignored | |
| 383 but some 4.2 kernels actually want the address of an int | |
| 384 and nonzero means something different. */ | |
| 385 ioctl (channel, TIOCFLUSH, &zero); | |
| 386 #endif | |
| 387 } | |
| 388 | |
| 442 | 389 #ifndef WIN32_NATIVE |
| 428 | 390 /* Set up the terminal at the other end of a pseudo-terminal that |
| 391 we will be controlling an inferior through. | |
| 392 It should not echo or do line-editing, since that is done | |
| 393 in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
| 394 | |
| 395 void | |
| 396 child_setup_tty (int out) | |
| 397 { | |
| 398 struct emacs_tty s; | |
| 430 | 399 emacs_get_tty (out, &s); |
| 428 | 400 |
| 401 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 402 assert (isatty(out)); | |
| 403 s.main.c_oflag |= OPOST; /* Enable output postprocessing */ | |
| 404 s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
| 513 | 405 |
| 406 { | |
| 407 /* Disable all output delays. */ | |
| 408 tcflag_t delay_mask = 0; | |
| 428 | 409 #ifdef NLDLY |
| 513 | 410 delay_mask |= NLDLY; |
| 411 #endif | |
| 412 #ifdef CRDLY | |
| 413 delay_mask |= CRDLY; | |
| 414 #endif | |
| 415 #ifdef TABDLY | |
| 416 delay_mask |= TABDLY; /* Also disables tab expansion (Posix). */ | |
| 417 #endif | |
| 418 #ifdef BSDLY | |
| 419 delay_mask |= BSDLY; | |
| 420 #endif | |
| 421 #ifdef VTDLY | |
| 422 delay_mask |= VTDLY; | |
| 428 | 423 #endif |
| 513 | 424 #ifdef FFDLY |
| 425 delay_mask |= FFDLY; | |
| 426 #endif | |
| 427 s.main.c_oflag &= ~delay_mask; | |
| 428 } | |
| 429 | |
| 430 #ifdef OXTABS | |
| 431 /* Posix defines the TAB3 value for TABDLY to mean: expand tabs to spaces. | |
| 432 On those systems tab expansion would be disabled by the above code. | |
| 433 BSD systems use an independent flag, OXTABS. */ | |
| 434 s.main.c_oflag &= ~OXTABS; /* Disable tab expansion */ | |
| 435 #endif | |
| 436 | |
| 428 | 437 s.main.c_lflag &= ~ECHO; /* Disable echo */ |
| 438 s.main.c_lflag |= ISIG; /* Enable signals */ | |
| 439 #ifdef IUCLC | |
| 440 s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
| 441 #endif | |
| 442 #ifdef OLCUC | |
| 443 s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ | |
| 444 #endif | |
| 513 | 445 |
| 428 | 446 #if defined (CSIZE) && defined (CS8) |
| 447 s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ | |
| 448 #endif | |
| 449 #ifdef ISTRIP | |
| 450 s.main.c_iflag &= ~ISTRIP; /* Don't strip 8th bit on input */ | |
| 451 #endif | |
| 452 #if 0 | |
| 453 /* Unnecessary as long as ICANON is set */ | |
| 454 s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ | |
| 455 s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
| 456 #endif /* 0 */ | |
| 457 | |
| 458 s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
| 459 s.main.c_cc[VEOF] = 04; /* ensure that EOF is Control-D */ | |
| 460 s.main.c_cc[VERASE] = _POSIX_VDISABLE; /* disable erase processing */ | |
| 461 s.main.c_cc[VKILL] = _POSIX_VDISABLE; /* disable kill processing */ | |
| 462 | |
| 463 #ifdef HPUX | |
| 464 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
| 465 #endif /* HPUX */ | |
| 466 | |
| 467 #ifdef AIX | |
| 468 #ifndef IBMR2AIX | |
| 469 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 470 s.main.c_line = 0; | |
| 471 s.main.c_iflag &= ~ASCEDIT; | |
| 472 #endif /* IBMR2AIX */ | |
| 473 /* Also, PTY overloads NUL and BREAK. | |
| 474 don't ignore break, but don't signal either, so it looks like NUL. | |
| 475 This really serves a purpose only if running in an XTERM window | |
| 476 or via TELNET or the like, but does no harm elsewhere. */ | |
| 477 s.main.c_iflag &= ~IGNBRK; | |
| 478 s.main.c_iflag &= ~BRKINT; | |
| 479 #endif /* AIX */ | |
| 480 #ifdef SIGNALS_VIA_CHARACTERS | |
| 481 /* TTY `special characters' are used in process_send_signal | |
| 482 so set them here to something useful. */ | |
| 483 s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
| 484 s.main.c_cc[VINTR] = 'C' &037; /* Control-C */ | |
| 485 s.main.c_cc[VSUSP] = 'Z' &037; /* Control-Z */ | |
| 486 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
| 487 /* TTY `special characters' work better as signals, so disable | |
| 488 character forms */ | |
| 489 s.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 490 s.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 491 s.main.c_cc[VSUSP] = _POSIX_VDISABLE; | |
| 492 s.main.c_lflag &= ~ISIG; | |
| 493 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
| 494 s.main.c_cc[VEOL] = _POSIX_VDISABLE; | |
| 495 #if defined (CBAUD) | |
| 440 | 496 /* <mdiers> #### This is not portable. ### |
| 428 | 497 POSIX does not specify CBAUD, and 4.4BSD does not have it. |
| 498 Instead, POSIX suggests to use cfset{i,o}speed(). | |
| 499 [cf. D. Lewine, POSIX Programmer's Guide, Chapter 8: Terminal | |
| 500 I/O, O'Reilly 1991] */ | |
| 501 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
| 502 #else | |
| 503 /* <mdiers> What to do upon failure? Just ignoring rc is probably | |
| 504 not acceptable, is it? */ | |
| 505 if (cfsetispeed (&s.main, B9600) == -1) /* ignore */; | |
| 506 if (cfsetospeed (&s.main, B9600) == -1) /* ignore */; | |
| 507 #endif /* defined (CBAUD) */ | |
| 508 | |
| 509 #else /* not HAVE_TERMIO */ | |
| 510 | |
| 511 s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
| 512 | CBREAK | TANDEM); | |
| 513 s.main.sg_flags |= LPASS8; | |
| 514 s.main.sg_erase = 0377; | |
| 515 s.main.sg_kill = 0377; | |
| 516 s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ | |
| 517 | |
| 518 #endif /* not HAVE_TERMIO */ | |
| 430 | 519 emacs_set_tty (out, &s, 0); |
| 428 | 520 } |
| 442 | 521 #endif /* WIN32_NATIVE */ |
| 428 | 522 |
| 523 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
524 #if !defined (SIGTSTP) |
| 428 | 525 |
| 526 #define SIG_PARAM_TYPE int | |
| 527 | |
| 528 /* Record a signal code and the handler for it. */ | |
| 529 struct save_signal | |
| 530 { | |
| 531 int code; | |
| 872 | 532 RETSIGTYPE (XCDECL * handler) (SIG_PARAM_TYPE); |
| 428 | 533 }; |
| 534 | |
| 535 static void | |
| 536 save_signal_handlers (struct save_signal *saved_handlers) | |
| 537 { | |
| 538 while (saved_handlers->code) | |
| 539 { | |
| 540 saved_handlers->handler | |
| 872 | 541 = (RETSIGTYPE (XCDECL *) (SIG_PARAM_TYPE)) EMACS_SIGNAL (saved_handlers->code, SIG_IGN); |
| 428 | 542 saved_handlers++; |
| 543 } | |
| 544 } | |
| 545 | |
| 546 static void | |
| 547 restore_signal_handlers (struct save_signal *saved_handlers) | |
| 548 { | |
| 549 while (saved_handlers->code) | |
| 550 { | |
| 613 | 551 EMACS_SIGNAL (saved_handlers->code, saved_handlers->handler); |
| 428 | 552 saved_handlers++; |
| 553 } | |
| 554 } | |
| 555 | |
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556 /* Fork a subshell. */ |
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557 static void |
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558 sys_subshell (void) |
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559 { |
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560 Lisp_Object dir; |
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561 Ibyte *str = 0; |
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562 Bytecount len; |
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563 struct gcpro gcpro1; |
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564 Ibyte *sh = 0; |
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565 Extbyte *shext; |
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566 |
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567 /* Use our buffer's default directory for the subshell. */ |
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568 |
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569 /* Note: These calls are spread out to insure that the return values |
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570 of the calls (which may be newly-created strings) are properly |
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571 GC-protected. */ |
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572 |
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573 GCPRO1 (dir); |
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574 |
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575 dir = current_buffer->directory; |
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576 /* If the current dir has no terminating slash, we'll get undesirable |
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577 results, so put the slash back. */ |
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578 dir = Ffile_name_as_directory (dir); |
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579 dir = Funhandled_file_name_directory (dir); |
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580 dir = expand_and_dir_to_file (dir, Qnil); |
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581 |
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582 str = alloca_ibytes (XSTRING_LENGTH (dir) + 2); |
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583 len = XSTRING_LENGTH (dir); |
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584 memcpy (str, XSTRING_DATA (dir), len); |
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585 if (!IS_ANY_SEP (str[len - 1])) |
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586 str[len++] = DIRECTORY_SEP; |
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587 str[len] = 0; |
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588 |
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589 if (sh == 0) |
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590 sh = egetenv ("SHELL"); |
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591 if (sh == 0) |
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592 sh = (Ibyte *) "sh"; |
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593 |
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594 PATHNAME_CONVERT_OUT (sh, shext); |
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595 |
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596 UNGCPRO; |
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597 |
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598 #ifdef WIN32_NATIVE |
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599 |
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600 if (str) |
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601 qxe_chdir (str); |
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602 |
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603 /* Waits for process completion */ |
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604 if (XEUNICODE_P ? |
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605 _wspawnlp (_P_WAIT, (const wchar_t *) shext, |
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606 (const wchar_t *) shext, NULL) != 0 : |
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607 _spawnlp (_P_WAIT, shext, shext, NULL) != 0) |
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608 report_process_error ("Can't spawn subshell", Qunbound); |
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609 else |
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610 return; /* we're done, no need to wait for termination */ |
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611 |
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612 #else /* not WIN32_NATIVE */ |
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613 |
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614 { |
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615 int pid; |
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616 struct save_signal saved_handlers[5]; |
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617 |
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618 saved_handlers[0].code = SIGINT; |
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619 saved_handlers[1].code = SIGQUIT; |
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620 saved_handlers[2].code = SIGTERM; |
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621 #ifdef SIGIO |
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622 saved_handlers[3].code = SIGIO; |
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623 saved_handlers[4].code = 0; |
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624 #else |
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625 saved_handlers[3].code = 0; |
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626 #endif |
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627 |
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628 pid = fork (); |
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629 |
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630 if (pid == -1) |
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631 report_process_error ("Can't spawn subshell", Qunbound); |
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632 if (pid == 0) |
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633 { |
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634 if (str) |
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635 qxe_chdir (str); |
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636 |
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637 #if !defined (NO_SUBPROCESSES) |
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638 close_process_descs (); /* Close Emacs's pipes/ptys */ |
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639 #endif |
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640 |
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641 #ifdef SET_EMACS_PRIORITY |
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642 if (emacs_priority != 0) |
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643 nice (-emacs_priority); /* Give the new shell the default priority */ |
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644 #endif |
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645 |
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646 execlp (shext, shext, 0); |
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647 retry_write (1, "Can't execute subshell", 22); |
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648 _exit (1); |
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649 } |
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650 |
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651 save_signal_handlers (saved_handlers); |
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652 synch_process_alive = 1; |
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653 wait_for_termination (pid); |
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654 restore_signal_handlers (saved_handlers); |
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655 } |
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656 |
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657 #endif /* not WIN32_NATIVE */ |
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658 } |
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659 |
|
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660 #endif /* !defined (SIGTSTP) */ |
| 428 | 661 |
| 662 | |
| 663 | |
| 664 /* Suspend the Emacs process; give terminal to its superior. */ | |
| 665 void | |
| 666 sys_suspend (void) | |
| 667 { | |
| 668 #if defined (SIGTSTP) | |
| 669 { | |
| 670 int pgrp = EMACS_GET_PROCESS_GROUP (); | |
| 671 EMACS_KILLPG (pgrp, SIGTSTP); | |
| 672 } | |
| 673 | |
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674 #else /* No SIGTSTP */ |
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675 |
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676 /* On a system where suspending is not implemented, |
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677 instead fork a subshell and let it talk directly to the terminal |
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678 while we wait. */ |
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679 sys_subshell (); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
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diff
changeset
|
680 |
| 428 | 681 #endif |
| 682 } | |
| 683 | |
| 684 /* Suspend a process if possible; give terminal to its superior. */ | |
| 685 void | |
| 2340 | 686 sys_suspend_process ( |
| 687 #ifdef SIGTSTP | |
| 688 int process | |
| 689 #else | |
| 690 int UNUSED (process) | |
| 691 #endif | |
| 692 ) | |
| 428 | 693 { |
| 694 /* 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
|
695 * VMS machines, but I don't know how to do it, so... |
| 428 | 696 */ |
| 697 #if defined (SIGTSTP) | |
| 698 kill(process, SIGTSTP); | |
| 699 #endif | |
| 700 } | |
| 701 | |
| 702 | |
| 703 /* Given FD, obtain pty buffer size. When no luck, a good guess is made, | |
| 442 | 704 so that the function works even when fd is not a pty. */ |
| 428 | 705 |
| 706 int | |
| 2340 | 707 get_pty_max_bytes ( |
| 708 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
| 709 int fd | |
| 710 #else | |
| 711 int UNUSED (fd) | |
| 712 #endif | |
| 713 ) | |
| 428 | 714 { |
| 442 | 715 /* DEC OSF 4.0 fpathconf returns 255, but xemacs hangs on long shell |
| 716 input lines if we return 253. 252 is OK!. So let's leave a bit | |
| 717 of slack for the newline that xemacs will insert, and for those | |
| 718 inevitable vendor off-by-one-or-two-or-three bugs. */ | |
| 719 #define MAX_CANON_SLACK 10 | |
| 720 #define SAFE_MAX_CANON (127 - MAX_CANON_SLACK) | |
| 428 | 721 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) |
| 442 | 722 { |
| 723 int max_canon = fpathconf (fd, _PC_MAX_CANON); | |
| 724 #ifdef __hpux__ | |
| 725 /* HP-UX 10.20 fpathconf returns 768, but this results in | |
| 726 truncated input lines, while 255 works. */ | |
| 727 if (max_canon > 255) max_canon = 255; | |
| 428 | 728 #endif |
| 442 | 729 return (max_canon < 0 ? SAFE_MAX_CANON : |
| 730 max_canon > SAFE_MAX_CANON ? max_canon - MAX_CANON_SLACK : | |
| 731 max_canon); | |
| 732 } | |
| 733 #elif defined (_POSIX_MAX_CANON) | |
| 734 return (_POSIX_MAX_CANON > SAFE_MAX_CANON ? | |
| 735 _POSIX_MAX_CANON - MAX_CANON_SLACK : | |
| 736 _POSIX_MAX_CANON); | |
| 737 #else | |
| 738 return SAFE_MAX_CANON; | |
| 739 #endif | |
| 428 | 740 } |
| 741 | |
| 742 /* Figure out the eof character for the FD. */ | |
| 743 | |
| 867 | 744 Ibyte |
| 428 | 745 get_eof_char (int fd) |
| 746 { | |
| 867 | 747 const Ibyte ctrl_d = (Ibyte) '\004'; |
| 428 | 748 |
| 749 if (!isatty (fd)) | |
| 750 return ctrl_d; | |
| 751 #ifdef HAVE_TERMIOS | |
| 752 { | |
| 753 struct termios t; | |
| 754 tcgetattr (fd, &t); | |
| 755 #if 0 | |
| 756 /* What is the following line designed to do??? -mrb */ | |
| 647 | 757 if ((int) strlen ((const char *) t.c_cc) < (VEOF + 1)) |
| 428 | 758 return ctrl_d; |
| 759 else | |
| 867 | 760 return (Ibyte) t.c_cc[VEOF]; |
| 428 | 761 #endif |
| 867 | 762 return t.c_cc[VEOF] == _POSIX_VDISABLE ? ctrl_d : (Ibyte) t.c_cc[VEOF]; |
| 428 | 763 } |
| 764 #else /* ! HAVE_TERMIOS */ | |
| 765 /* On Berkeley descendants, the following IOCTL's retrieve the | |
| 766 current control characters. */ | |
| 767 #if defined (TIOCGETC) | |
| 768 { | |
| 769 struct tchars c; | |
| 770 ioctl (fd, TIOCGETC, &c); | |
| 867 | 771 return (Ibyte) c.t_eofc; |
| 428 | 772 } |
| 773 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
| 774 /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
| 775 characters. */ | |
| 776 #ifdef TCGETA | |
| 777 { | |
| 778 struct termio t; | |
| 779 ioctl (fd, TCGETA, &t); | |
| 647 | 780 if ((int) strlen ((const char *) t.c_cc) < (VINTR + 1)) |
| 428 | 781 return ctrl_d; |
| 782 else | |
| 867 | 783 return (Ibyte) t.c_cc[VINTR]; |
| 428 | 784 } |
| 785 #else /* ! defined (TCGETA) */ | |
| 786 /* Rather than complain, we'll just guess ^D, which is what | |
| 787 * earlier emacsen always used. */ | |
| 788 return ctrl_d; | |
| 789 #endif /* ! defined (TCGETA) */ | |
| 790 #endif /* ! defined (TIOCGETC) */ | |
| 791 #endif /* ! defined (HAVE_TERMIOS) */ | |
| 792 } | |
| 793 | |
| 794 /* Set the logical window size associated with descriptor FD | |
| 795 to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
| 796 | |
| 797 int | |
| 2340 | 798 set_window_size ( |
| 799 #if defined (TIOCSWINSZ) || defined (TIOCSSIZE) | |
| 800 int fd, int height, int width | |
| 801 #else | |
| 802 int UNUSED (fd), int UNUSED (height), int UNUSED (width) | |
| 803 #endif | |
| 804 ) | |
| 428 | 805 { |
| 806 #ifdef TIOCSWINSZ | |
| 807 | |
| 808 /* BSD-style. */ | |
| 809 struct winsize size; | |
| 810 size.ws_row = height; | |
| 811 size.ws_col = width; | |
| 812 | |
| 813 if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
| 814 return 0; /* error */ | |
| 815 else | |
| 816 return 1; | |
| 817 | |
| 818 #elif defined (TIOCSSIZE) | |
| 819 | |
| 820 /* SunOS - style. */ | |
| 821 struct ttysize size; | |
| 822 size.ts_lines = height; | |
| 823 size.ts_cols = width; | |
| 824 | |
| 825 if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
| 826 return 0; | |
| 827 else | |
| 828 return 1; | |
| 829 #else | |
| 830 return -1; | |
| 831 #endif | |
| 832 } | |
| 833 | |
| 834 /* Set up the proper status flags for use of a pty. */ | |
| 835 | |
| 836 void | |
| 2340 | 837 setup_pty ( |
| 838 #ifdef TIOCPKT | |
| 839 int fd | |
| 840 #else | |
| 841 int UNUSED (fd) | |
| 842 #endif | |
| 843 ) | |
| 428 | 844 { |
| 845 #ifdef TIOCPKT | |
| 846 /* In some systems (Linux through 2.0.0, at least), packet mode doesn't | |
| 847 get cleared when a pty is closed, so we need to clear it here. | |
| 848 Linux pre2.0.13 contained an attempted fix for this (from Ted Ts'o, | |
| 849 tytso@mit.edu), but apparently it messed up rlogind and telnetd, so he | |
| 850 removed the fix in pre2.0.14. - dkindred@cs.cmu.edu | |
| 851 */ | |
| 852 { | |
| 853 int off = 0; | |
| 854 ioctl (fd, TIOCPKT, (char *)&off); | |
| 855 } | |
| 535 | 856 #endif /* TIOCPKT */ |
| 428 | 857 } |
| 858 | |
| 859 | |
| 860 /************************************************************************/ | |
| 861 /* TTY control */ | |
| 862 /************************************************************************/ | |
| 863 | |
| 864 /* ------------------------------------------------------ */ | |
| 865 /* get baud rate */ | |
| 866 /* ------------------------------------------------------ */ | |
| 867 | |
| 868 /* It really makes more sense for the baud-rate to be console-specific | |
| 869 and not device-specific, but it's (at least potentially) used for output | |
| 870 decisions. */ | |
| 871 | |
| 872 void | |
| 873 init_baud_rate (struct device *d) | |
| 874 { | |
| 875 if (DEVICE_WIN_P (d) || DEVICE_STREAM_P (d)) | |
| 876 { | |
| 877 DEVICE_BAUD_RATE (d) = 38400; | |
| 878 return; | |
| 879 } | |
| 880 | |
| 881 #ifdef HAVE_TTY | |
| 882 assert (DEVICE_TTY_P (d)); | |
| 883 { | |
| 647 | 884 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 428 | 885 int input_fd = CONSOLE_TTY_DATA (con)->infd; |
| 814 | 886 #ifdef HAVE_TERMIOS |
| 428 | 887 struct termios sg; |
| 888 | |
| 889 sg.c_cflag = B9600; | |
| 890 tcgetattr (input_fd, &sg); | |
| 891 DEVICE_TTY_DATA (d)->ospeed = cfgetospeed (&sg); | |
| 892 #elif defined (HAVE_TERMIO) | |
| 893 struct termio sg; | |
| 894 | |
| 895 sg.c_cflag = B9600; | |
| 896 # ifdef HAVE_TCATTR | |
| 897 tcgetattr (input_fd, &sg); | |
| 898 # else | |
| 899 ioctl (input_fd, TCGETA, &sg); | |
| 900 # endif | |
| 901 DEVICE_TTY_DATA (d)->ospeed = sg.c_cflag & CBAUD; | |
| 902 #else /* neither TERMIOS nor TERMIO */ | |
| 903 struct sgttyb sg; | |
| 904 | |
| 905 sg.sg_ospeed = B9600; | |
| 906 if (ioctl (input_fd, TIOCGETP, &sg) < 0) | |
| 2500 | 907 ABORT (); |
| 428 | 908 DEVICE_TTY_DATA (d)->ospeed = sg.sg_ospeed; |
| 909 #endif | |
| 910 } | |
| 911 | |
| 912 DEVICE_BAUD_RATE (d) = | |
| 913 (DEVICE_TTY_DATA (d)->ospeed < countof (baud_convert) | |
| 914 ? baud_convert[DEVICE_TTY_DATA (d)->ospeed] | |
| 915 : 9600); | |
| 916 | |
| 917 if (DEVICE_BAUD_RATE (d) == 0) | |
| 918 DEVICE_BAUD_RATE (d) = 1200; | |
| 919 #endif /* HAVE_TTY */ | |
| 920 } | |
| 921 | |
| 922 | |
| 923 /* ------------------------------------------------------ */ | |
| 924 /* SIGIO control */ | |
| 925 /* ------------------------------------------------------ */ | |
| 926 | |
| 853 | 927 #if defined (SIGIO) && !defined (BROKEN_SIGIO) |
| 428 | 928 |
| 929 static void | |
| 930 init_sigio_on_device (struct device *d) | |
| 931 { | |
| 932 int filedesc = DEVICE_INFD (d); | |
| 933 | |
| 934 #if defined (FIOSSAIOOWN) | |
| 935 { /* HPUX stuff */ | |
| 936 int owner = getpid (); | |
| 937 int ioctl_status; | |
| 938 if (DEVICE_TTY_P (d)) | |
| 939 { | |
| 940 ioctl_status = ioctl (filedesc, FIOGSAIOOWN, | |
| 941 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 942 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, &owner); | |
| 943 } | |
| 944 #ifdef HAVE_WINDOW_SYSTEM | |
| 945 else if (!DEVICE_STREAM_P (d)) | |
| 946 { | |
| 947 ioctl_status = ioctl (filedesc, SIOCGPGRP, | |
| 948 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 949 ioctl_status = ioctl (filedesc, SIOCSPGRP, &owner); | |
| 950 } | |
| 951 #endif | |
| 952 } | |
| 953 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 954 DEVICE_OLD_FCNTL_OWNER (d) = fcntl (filedesc, F_GETOWN, 0); | |
| 955 fcntl (filedesc, F_SETOWN, getpid ()); | |
| 956 #endif | |
| 957 } | |
| 958 | |
| 959 static void | |
| 960 reset_sigio_on_device (struct device *d) | |
| 961 { | |
| 962 int filedesc = DEVICE_INFD (d); | |
| 963 | |
| 964 #if defined (FIOSSAIOOWN) | |
| 965 { /* HPUX stuff */ | |
| 966 int ioctl_status; | |
| 967 if (DEVICE_TTY_P (d)) | |
| 968 { | |
| 969 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, | |
| 970 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 971 } | |
| 972 #ifdef HAVE_WINDOW_SYSTEM | |
| 973 else if (!DEVICE_STREAM_P (d)) | |
| 974 { | |
| 975 ioctl_status = ioctl (filedesc, SIOCSPGRP, | |
| 976 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 977 } | |
| 978 #endif | |
| 979 } | |
| 980 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 981 fcntl (filedesc, F_SETOWN, DEVICE_OLD_FCNTL_OWNER (d)); | |
| 982 #endif | |
| 983 } | |
| 984 | |
| 985 static void | |
| 986 request_sigio_on_device (struct device *d) | |
| 987 { | |
| 988 int filedesc = DEVICE_INFD (d); | |
| 989 | |
| 502 | 990 /* NOTE: It appears that Linux has its own mechanism for requesting |
| 991 SIGIO, using the F_GETSIG and F_SETSIG commands to fcntl(). | |
| 992 These let you pick which signal you want sent (not just SIGIO), | |
| 993 and if you do this, you get additional info which tells you which | |
| 994 file descriptor has input ready on it. The man page says: | |
| 995 | |
| 996 Using these mechanisms, a program can implement fully | |
| 997 asynchronous I/O without using select(2) or poll(2) most | |
| 998 of the time. | |
| 999 | |
| 1000 The use of O_ASYNC, F_GETOWN, F_SETOWN is specific to BSD | |
| 1001 and Linux. F_GETSIG and F_SETSIG are Linux-specific. | |
| 1002 POSIX has asynchronous I/O and the aio_sigevent structure | |
| 1003 to achieve similar things; these are also available in | |
| 1004 Linux as part of the GNU C Library (Glibc). | |
| 1005 | |
| 1006 But it appears that Linux also supports O_ASYNC, so I see no | |
| 1007 particular need to switch. --ben | |
| 1008 */ | |
| 1009 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1010 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 1011 { |
| 502 | 1012 int events = 0; |
| 428 | 1013 ioctl (filedesc, I_GETSIG, &events); |
| 1014 ioctl (filedesc, I_SETSIG, events | S_INPUT); | |
| 1015 } | |
| 502 | 1016 #elif defined (O_ASYNC) |
| 1017 /* Generally FASYNC and O_ASYNC are both defined, and both equal; | |
| 1018 but let's not depend on that. O_ASYNC appears to be more | |
| 1019 standard (at least the Linux include files think so), so | |
| 1020 check it first. */ | |
| 1021 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | O_ASYNC); | |
| 428 | 1022 #elif defined (FASYNC) |
| 1023 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | FASYNC); | |
| 1024 #elif defined (FIOSSAIOSTAT) | |
| 1025 { | |
| 1026 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 1027 sockets and other devices for some bizarre reason. We guess | |
| 1028 that an X device is a socket, and tty devices aren't. We then | |
| 1029 use the following crud to do the appropriate thing. */ | |
| 1030 int on = 1; | |
| 1031 int ioctl_status; /* ####DG: check if IOCTL succeeds here. */ | |
| 1032 | |
| 1033 if (DEVICE_TTY_P (d)) | |
| 1034 { | |
| 1035 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &on); | |
| 1036 } | |
| 1037 #ifdef HAVE_WINDOW_SYSTEM | |
| 1038 else if (!DEVICE_STREAM_P (d)) | |
| 1039 { | |
| 1040 ioctl_status = ioctl (filedesc, FIOASYNC, &on); | |
| 1041 } | |
| 1042 #endif | |
| 1043 } | |
| 1044 #elif defined (FIOASYNC) | |
| 1045 { | |
| 1046 int on = 1; | |
| 1047 ioctl (filedesc, FIOASYNC, &on); | |
| 1048 } | |
| 1049 #endif | |
| 1050 } | |
| 1051 | |
| 1052 static void | |
| 1053 unrequest_sigio_on_device (struct device *d) | |
| 1054 { | |
| 1055 int filedesc = DEVICE_INFD (d); | |
| 1056 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1057 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 1058 { |
| 502 | 1059 int events = 0; |
| 428 | 1060 ioctl (filedesc, I_GETSIG, &events); |
| 1061 ioctl (filedesc, I_SETSIG, events & ~S_INPUT); | |
| 1062 } | |
| 502 | 1063 #elif defined (O_ASYNC) |
| 1064 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~O_ASYNC); | |
| 428 | 1065 #elif defined (FASYNC) |
| 1066 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~FASYNC); | |
| 1067 #elif defined (FIOSSAIOSTAT) | |
| 1068 { | |
| 1069 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 1070 sockets and other devices for some bizarre reason. We guess | |
| 1071 that an X device is a socket, and tty devices aren't. We then | |
| 1072 use the following crud to do the appropriate thing. */ | |
| 1073 | |
| 1074 int off = 0; | |
| 1075 int ioctl_status; | |
| 1076 | |
| 1077 /* See comment for request_sigio_on_device */ | |
| 1078 | |
| 1079 if (DEVICE_TTY_P (d)) | |
| 1080 { | |
| 1081 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &off); | |
| 1082 } | |
| 1083 else | |
| 1084 { | |
| 1085 ioctl_status = ioctl (filedesc, FIOASYNC, &off); | |
| 1086 } | |
| 1087 } | |
| 1088 #elif defined (FIOASYNC) | |
| 1089 { | |
| 1090 int off = 0; | |
| 1091 ioctl (filedesc, FIOASYNC, &off); | |
| 1092 } | |
| 1093 #endif | |
| 1094 } | |
| 1095 | |
| 1096 void | |
| 1097 request_sigio (void) | |
| 1098 { | |
| 1099 Lisp_Object devcons, concons; | |
| 1100 | |
| 1101 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1102 { | |
| 1103 struct device *d; | |
| 1104 | |
| 1105 d = XDEVICE (XCAR (devcons)); | |
| 1106 | |
| 1107 if (!DEVICE_STREAM_P (d)) | |
| 1108 request_sigio_on_device (d); | |
| 1109 } | |
| 1110 } | |
| 1111 | |
| 1112 void | |
| 1113 unrequest_sigio (void) | |
| 1114 { | |
| 1115 Lisp_Object devcons, concons; | |
| 1116 | |
| 1117 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1118 { | |
| 1119 struct device *d; | |
| 1120 | |
| 1121 d = XDEVICE (XCAR (devcons)); | |
| 1122 | |
| 1123 if (!DEVICE_STREAM_P (d)) | |
| 1124 unrequest_sigio_on_device (d); | |
| 1125 } | |
| 1126 } | |
| 1127 | |
| 1128 #endif /* SIGIO */ | |
| 1129 | |
| 1130 /* ------------------------------------------------------ */ | |
| 1131 /* Changing Emacs's process group */ | |
| 1132 /* ------------------------------------------------------ */ | |
| 1133 | |
| 1134 /* Saving and restoring the process group of Emacs's terminal. */ | |
| 1135 | |
| 1136 /* On some systems, apparently (?!) Emacs must be in its own process | |
| 1137 group in order to receive SIGIO correctly. On other systems | |
| 1138 (e.g. Solaris), it's not required and doing it makes things | |
| 1139 get fucked up. So, we only do it when | |
| 1140 SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP is defined. Basically, | |
| 1141 this is only required for BSD 4.2 systems. (Actually, I bet | |
| 1142 we don't have to do this at all -- those systems also | |
| 1143 required interrupt input, which we don't support.) | |
| 1144 | |
| 1145 If Emacs was in its own process group (i.e. inherited_pgroup == | |
| 1146 getpid ()), then we know we're running under a shell with job | |
| 1147 control (Emacs would never be run as part of a pipeline). | |
| 1148 Everything is fine. | |
| 1149 | |
| 1150 If Emacs was not in its own process group, then we know we're | |
| 1151 running under a shell (or a caller) that doesn't know how to | |
| 1152 separate itself from Emacs (like sh). Emacs must be in its own | |
| 1153 process group in order to receive SIGIO correctly. In this | |
| 1154 situation, we put ourselves in our own pgroup, forcibly set the | |
| 1155 tty's pgroup to our pgroup, and make sure to restore and reinstate | |
| 1156 the tty's pgroup just like any other terminal setting. If | |
| 1157 inherited_group was not the tty's pgroup, then we'll get a | |
| 1158 SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
| 1159 it goes foreground in the future, which is what should happen. */ | |
| 1160 | |
| 1161 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1162 | |
| 442 | 1163 static pid_t inherited_pgroup; |
| 1164 static pid_t inherited_tty_pgroup; | |
| 428 | 1165 |
| 1166 #endif | |
| 1167 | |
| 1168 void | |
| 1169 munge_tty_process_group (void) | |
| 1170 { | |
| 1171 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1172 if (noninteractive) | |
| 1173 return; | |
| 1174 | |
| 1175 /* Only do this munging if we have a device on the controlling | |
| 1176 terminal. See the large comment below. */ | |
| 1177 | |
| 1178 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1179 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1180 { | |
| 1181 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 442 | 1182 pid_t me = getpid (); |
| 428 | 1183 EMACS_BLOCK_SIGNAL (SIGTTOU); |
| 1184 EMACS_SET_TTY_PROCESS_GROUP (fd, &me); | |
| 1185 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1186 retry_close (fd); |
| 428 | 1187 } |
| 1188 #endif | |
| 1189 } | |
| 1190 | |
| 1191 /* Split off the foreground process group to Emacs alone. | |
| 1192 When we are in the foreground, but not started in our own process | |
| 1193 group, redirect the TTY to point to our own process group. We need | |
| 1194 to be in our own process group to receive SIGIO properly. */ | |
| 1195 static void | |
| 1196 munge_process_groups (void) | |
| 1197 { | |
| 1198 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1199 if (noninteractive) | |
| 1200 return; | |
| 1201 | |
| 1202 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1203 | |
| 1204 munge_tty_process_group (); | |
| 1205 #endif | |
| 1206 } | |
| 1207 | |
| 1208 void | |
| 1209 unmunge_tty_process_group (void) | |
| 1210 { | |
| 1211 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1212 { | |
| 1213 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1214 EMACS_BLOCK_SIGNAL (SIGTTOU); | |
| 1215 EMACS_SET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 1216 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1217 retry_close (fd); |
| 428 | 1218 } |
| 1219 #endif | |
| 1220 } | |
| 1221 | |
| 1222 /* Set the tty to our original foreground group. | |
| 1223 Also restore the original process group (put us back into sh's | |
| 1224 process group), so that ^Z will suspend both us and sh. */ | |
| 1225 static void | |
| 1226 unmunge_process_groups (void) | |
| 1227 { | |
| 1228 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1229 if (noninteractive) | |
| 1230 return; | |
| 1231 | |
| 1232 unmunge_tty_process_group (); | |
| 1233 | |
| 1234 EMACS_SET_PROCESS_GROUP (inherited_pgroup); | |
| 1235 #endif | |
| 1236 } | |
| 1237 | |
| 1238 /* According to some old wisdom, we need to be in a separate process | |
| 1239 group for SIGIO to work correctly (at least on some systems ...). | |
| 1240 So go ahead and put ourselves into our own process group. This | |
| 1241 will fail if we're already in our own process group, but who cares. | |
| 1242 Also record whether we were in our own process group. (In general, | |
| 1243 we will already be in our own process group if we were started from | |
| 1244 a job-control shell like csh, but not if we were started from sh). | |
| 1245 | |
| 1246 If we succeeded in changing our process group, then we will no | |
| 1247 longer be in the foreground process group of our controlling | |
| 1248 terminal. Therefore, if we have a console open onto this terminal, | |
| 1249 we have to change the controlling terminal's foreground process | |
| 1250 group (otherwise we will get stopped with a SIGTTIN signal when | |
| 1251 attempting to read from the terminal). It's important, | |
| 1252 however, that we do this *only* when we have a console open onto | |
| 1253 the terminal. It's a decidedly bad idea to do so otherwise, | |
| 1254 especially if XEmacs was started from the background. */ | |
| 1255 | |
| 1256 void | |
| 1257 init_process_group (void) | |
| 1258 { | |
| 1259 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1260 if (! noninteractive) | |
| 1261 { | |
| 1262 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1263 inherited_pgroup = EMACS_GET_PROCESS_GROUP (); | |
| 1264 EMACS_GET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 771 | 1265 retry_close (fd); |
| 428 | 1266 EMACS_SEPARATE_PROCESS_GROUP (); |
| 1267 } | |
| 1268 #endif | |
| 1269 } | |
| 1270 | |
| 1271 void | |
| 1272 disconnect_controlling_terminal (void) | |
| 1273 { | |
| 1274 # ifdef HAVE_SETSID | |
| 1275 /* Controlling terminals are attached to a session. | |
| 1276 Create a new session for us; it will have no controlling | |
| 1277 terminal. This also, of course, puts us in our own | |
| 1278 process group. */ | |
| 1279 setsid (); | |
| 1280 # else | |
| 1281 /* Put us in our own process group. */ | |
| 1282 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1283 # if defined (TIOCNOTTY) | |
| 1284 /* This is the older way of disconnecting the controlling | |
| 1285 terminal, on 4.3 BSD. We must open /dev/tty; using | |
| 1286 filedesc 0 is not sufficient because it could be | |
| 1287 something else (e.g. our stdin was redirected to | |
| 1288 another terminal). | |
| 1289 */ | |
| 1290 { | |
| 1291 int j = open ("/dev/tty", O_RDWR, 0); | |
| 1292 ioctl (j, TIOCNOTTY, 0); | |
| 771 | 1293 retry_close (j); |
| 428 | 1294 } |
| 1295 # endif /* TIOCNOTTY */ | |
| 1296 /* | |
| 1297 On systems without TIOCNOTTY and without | |
| 1298 setsid(), we don't need to do anything more to | |
| 1299 disconnect our controlling terminal. Here is | |
| 1300 what the man page for termio(7) from a SYSV 3.2 | |
| 1301 system says: | |
| 1302 | |
| 1303 "The first terminal file opened by the process group leader | |
| 1304 of a terminal file not already associated with a process | |
| 1305 group becomes the control terminal for that process group. | |
| 1306 The control terminal plays a special role in handling quit | |
| 1307 and interrupt signals, as discussed below. The control | |
| 1308 terminal is inherited by a child process during a fork(2). | |
| 1309 A process can break this association by changing its process | |
| 1310 group using setpgrp(2)." | |
| 1311 | |
| 1312 */ | |
| 1313 # endif /* not HAVE_SETSID */ | |
| 1314 } | |
| 1315 | |
| 1316 | |
| 1317 /* ------------------------------------------------------ */ | |
| 1318 /* Getting and setting emacs_tty structures */ | |
| 1319 /* ------------------------------------------------------ */ | |
| 1320 | |
| 1321 /* It's wrong to encase these into #ifdef HAVE_TTY because we need | |
| 1322 them for child TTY processes. */ | |
| 1323 /* However, this does break NT support while we don't do child TTY processes */ | |
| 442 | 1324 #ifndef WIN32_NATIVE |
| 428 | 1325 |
| 1326 /* Set *TC to the parameters associated with the terminal FD. | |
| 1327 Return zero if all's well, or -1 if we ran into an error we | |
| 1328 couldn't deal with. */ | |
| 1329 int | |
| 1330 emacs_get_tty (int fd, struct emacs_tty *settings) | |
| 1331 { | |
| 1332 /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
| 1333 #ifdef HAVE_TCATTR | |
| 1334 /* We have those nifty POSIX tcmumbleattr functions. */ | |
| 1335 if (tcgetattr (fd, &settings->main) < 0) | |
| 1336 return -1; | |
| 1337 | |
| 1338 #elif defined HAVE_TERMIO | |
| 1339 /* The SYSV-style interface? */ | |
| 1340 if (ioctl (fd, TCGETA, &settings->main) < 0) | |
| 1341 return -1; | |
| 1342 | |
| 814 | 1343 #else |
| 428 | 1344 /* I give up - I hope you have the BSD ioctls. */ |
| 1345 if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
| 1346 return -1; | |
| 1347 #endif /* HAVE_TCATTR */ | |
| 1348 | |
| 1349 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1350 #ifdef HAVE_LTCHARS | |
| 1351 if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) | |
| 1352 return -1; | |
| 1353 #endif | |
| 1354 | |
| 1355 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1356 #ifdef HAVE_TCHARS | |
| 1357 if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 | |
| 1358 || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
| 1359 return -1; | |
| 1360 #endif | |
| 1361 | |
| 1362 /* We have survived the tempest. */ | |
| 1363 return 0; | |
| 1364 } | |
| 1365 | |
| 1366 /* Set the parameters of the tty on FD according to the contents of | |
| 1367 *SETTINGS. If FLUSHP is non-zero, we discard input. | |
| 430 | 1368 Return 0 if all went well, and -1 if anything failed. |
| 1369 #### All current callers use FLUSHP == 0. */ | |
| 428 | 1370 |
| 1371 int | |
| 1372 emacs_set_tty (int fd, struct emacs_tty *settings, int flushp) | |
| 1373 { | |
| 1374 /* Set the primary parameters - baud rate, character size, etcetera. */ | |
| 1375 #ifdef HAVE_TCATTR | |
| 1376 int i; | |
| 1377 /* We have those nifty POSIX tcmumbleattr functions. | |
| 1378 William J. Smith <wjs@wiis.wang.com> writes: | |
| 1379 "POSIX 1003.1 defines tcsetattr() to return success if it was | |
| 1380 able to perform any of the requested actions, even if some | |
| 1381 of the requested actions could not be performed. | |
| 1382 We must read settings back to ensure tty setup properly. | |
| 1383 AIX requires this to keep tty from hanging occasionally." */ | |
| 1384 /* This makes sure that we don't loop indefinitely in here. */ | |
| 1385 for (i = 0 ; i < 10 ; i++) | |
| 1386 if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) | |
| 1387 { | |
| 1388 if (errno == EINTR) | |
| 1389 continue; | |
| 1390 else | |
| 1391 return -1; | |
| 1392 } | |
| 1393 else | |
| 1394 { | |
| 2957 | 1395 struct termios new_; |
| 428 | 1396 |
| 1397 /* Get the current settings, and see if they're what we asked for. */ | |
| 2957 | 1398 tcgetattr (fd, &new_); |
| 428 | 1399 /* We cannot use memcmp on the whole structure here because under |
| 1400 * aix386 the termios structure has some reserved field that may | |
| 1401 * 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
|
1402 * FIXME: Now that aix386 is gone, can we memcmp the whole structure? |
| 428 | 1403 */ |
| 2957 | 1404 if ( new_.c_iflag == settings->main.c_iflag |
| 1405 && new_.c_oflag == settings->main.c_oflag | |
| 1406 && new_.c_cflag == settings->main.c_cflag | |
| 1407 && new_.c_lflag == settings->main.c_lflag | |
| 1408 && memcmp(new_.c_cc, settings->main.c_cc, NCCS) == 0) | |
| 428 | 1409 break; |
| 1410 else | |
| 1411 continue; | |
| 1412 } | |
| 1413 #elif defined HAVE_TERMIO | |
| 1414 /* The SYSV-style interface? */ | |
| 1415 if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) | |
| 1416 return -1; | |
| 1417 | |
| 814 | 1418 #else |
| 428 | 1419 /* I give up - I hope you have the BSD ioctls. */ |
| 1420 if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
| 1421 return -1; | |
| 1422 #endif /* HAVE_TCATTR */ | |
| 1423 | |
| 1424 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1425 #ifdef HAVE_LTCHARS | |
| 1426 if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) | |
| 1427 return -1; | |
| 1428 #endif | |
| 1429 | |
| 1430 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1431 #ifdef HAVE_TCHARS | |
| 1432 if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 | |
| 1433 || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
| 1434 return -1; | |
| 1435 #endif | |
| 1436 | |
| 1437 /* We have survived the tempest. */ | |
| 1438 return 0; | |
| 1439 } | |
| 1440 | |
| 442 | 1441 #endif /* WIN32_NATIVE */ |
| 428 | 1442 |
| 1443 /* ------------------------------------------------------ */ | |
| 1444 /* Initializing a device */ | |
| 1445 /* ------------------------------------------------------ */ | |
| 1446 | |
| 1447 #ifdef HAVE_TTY | |
| 1448 | |
| 1449 #if defined (TIOCGLTC) && defined (HAVE_LTCHARS) /* HAVE_LTCHARS */ | |
| 1450 static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; | |
| 1451 #endif | |
| 1452 #ifdef TIOCGETC /* HAVE_TCHARS */ | |
| 1453 #ifdef HAVE_TCHARS | |
| 1454 static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; | |
| 1455 #endif | |
| 1456 #endif | |
| 1457 | |
| 1458 static void | |
| 1459 tty_init_sys_modes_on_device (struct device *d) | |
| 1460 { | |
| 1461 struct emacs_tty tty; | |
| 2286 | 1462 int input_fd; |
| 428 | 1463 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1464 | |
| 1465 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
| 1466 | |
| 430 | 1467 emacs_get_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty); |
| 428 | 1468 tty = CONSOLE_TTY_DATA (con)->old_tty; |
| 1469 | |
| 1470 con->tty_erase_char = Qnil; | |
| 1471 | |
| 1472 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1473 /* after all those years... */ | |
| 1474 con->tty_erase_char = make_char (tty.main.c_cc[VERASE]); | |
| 1475 tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ | |
| 1476 tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
| 1477 #ifdef ISTRIP | |
| 1478 tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
| 1479 #endif | |
| 1480 tty.main.c_lflag &= ~ECHO; /* Disable echo */ | |
| 1481 tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
| 1482 #ifdef IEXTEN | |
| 1483 tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ | |
| 1484 #endif | |
| 1485 tty.main.c_lflag |= ISIG; /* Enable signals */ | |
| 1486 if (TTY_FLAGS (con).flow_control) | |
| 1487 { | |
| 1488 tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
| 1489 #ifdef IXANY | |
| 1490 tty.main.c_iflag &= ~IXANY; | |
| 1491 #endif /* IXANY */ | |
| 1492 } | |
| 1493 else | |
| 1494 tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
| 1495 tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
| 1496 on output */ | |
| 513 | 1497 |
| 1498 #if 0 | |
| 1499 /* We used to disable tab expansion here, but this is the user's decision. */ | |
| 1500 #if defined (TABDLY) && defined (TAB3) | |
| 1501 if ((tty.main.c_oflag & TABDLY) == TAB3) | |
| 1502 tty.main.c_oflag &= ~TABDLY; /* Disable tab expansion (Posix). */ | |
| 1503 #elif defined (OXTABS) | |
| 1504 tty.main.c_oflag &= ~OXTABS; /* Disable tab expansion (BSD). */ | |
| 1505 #endif | |
| 1506 #endif /* 0 */ | |
| 1507 | |
| 428 | 1508 #ifdef CS8 |
| 1509 if (TTY_FLAGS (con).meta_key) | |
| 1510 { | |
| 1511 tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
| 1512 tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
| 1513 } | |
| 1514 #endif | |
| 1515 if (CONSOLE_TTY_DATA (con)->controlling_terminal) | |
| 1516 { | |
| 1204 | 1517 tty.main.c_cc[VINTR] = /* C-g (usually) gives SIGINT */ |
| 2828 | 1518 event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1519 /* Set up C-g for both SIGQUIT and SIGINT. |
| 1520 We don't know which we will get, but we handle both alike | |
| 1521 so which one it really gives us does not matter. */ | |
| 1204 | 1522 tty.main.c_cc[VQUIT] = tty.main.c_cc[VINTR]; |
| 428 | 1523 } |
| 1524 else | |
| 1525 { | |
| 1526 tty.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 1527 tty.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 1528 } | |
| 1529 tty.main.c_cc[VMIN] = 1; /* Input should wait for at | |
| 1530 least 1 char */ | |
| 1531 tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
| 1532 #ifdef VSWTCH | |
| 1533 tty.main.c_cc[VSWTCH] = _POSIX_VDISABLE; /* Turn off shell layering use | |
| 1534 of C-z */ | |
| 1535 #endif /* VSWTCH */ | |
| 1536 /* There was some conditionalizing here on (mips or TCATTR), but | |
| 1537 I think that's wrong. There was one report of C-y (DSUSP) not being | |
| 1538 disabled on HP9000s700 systems, and this might fix it. */ | |
| 1539 #ifdef VSUSP | |
| 1540 tty.main.c_cc[VSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-z. */ | |
| 1541 #endif /* VSUSP */ | |
| 1542 #ifdef V_DSUSP | |
| 1543 tty.main.c_cc[V_DSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-y. */ | |
| 1544 #endif /* V_DSUSP */ | |
| 1545 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ | |
| 1546 tty.main.c_cc[VDSUSP] = _POSIX_VDISABLE; | |
| 1547 #endif /* VDSUSP */ | |
| 1548 #ifdef VLNEXT | |
| 1549 tty.main.c_cc[VLNEXT] = _POSIX_VDISABLE; | |
| 1550 #endif /* VLNEXT */ | |
| 1551 #ifdef VREPRINT | |
| 1552 tty.main.c_cc[VREPRINT] = _POSIX_VDISABLE; | |
| 1553 #endif /* VREPRINT */ | |
| 1554 #ifdef VWERASE | |
| 1555 tty.main.c_cc[VWERASE] = _POSIX_VDISABLE; | |
| 1556 #endif /* VWERASE */ | |
| 1557 #ifdef VDISCARD | |
| 1558 tty.main.c_cc[VDISCARD] = _POSIX_VDISABLE; | |
| 1559 #endif /* VDISCARD */ | |
| 1560 #ifdef VSTART | |
| 1561 tty.main.c_cc[VSTART] = _POSIX_VDISABLE; | |
| 1562 #endif /* VSTART */ | |
| 1563 #ifdef VSTRT | |
| 1564 tty.main.c_cc[VSTRT] = _POSIX_VDISABLE; /* called VSTRT on some systems */ | |
| 1565 #endif /* VSTART */ | |
| 1566 #ifdef VSTOP | |
| 1567 tty.main.c_cc[VSTOP] = _POSIX_VDISABLE; | |
| 1568 #endif /* VSTOP */ | |
| 1569 | |
| 1570 #ifdef AIX | |
| 1571 #ifndef IBMR2AIX | |
| 1572 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 1573 tty.main.c_line = 0; | |
| 1574 tty.main.c_iflag &= ~ASCEDIT; | |
| 1575 #else | |
| 1576 tty.main.c_cc[VSTRT] = 255; | |
| 1577 tty.main.c_cc[VSTOP] = 255; | |
| 1578 tty.main.c_cc[VSUSP] = 255; | |
| 1579 tty.main.c_cc[VDSUSP] = 255; | |
| 1580 #endif /* IBMR2AIX */ | |
| 1581 /* Also, PTY overloads NUL and BREAK. | |
| 1582 don't ignore break, but don't signal either, so it looks like NUL. | |
| 1583 This really serves a purpose only if running in an XTERM window | |
| 1584 or via TELNET or the like, but does no harm elsewhere. */ | |
| 1585 tty.main.c_iflag &= ~IGNBRK; | |
| 1586 tty.main.c_iflag &= ~BRKINT; | |
| 1587 #endif /* AIX */ | |
| 1588 #else /* if not HAVE_TERMIO */ | |
| 1589 con->tty_erase_char = make_char (tty.main.sg_erase); | |
| 1590 tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); | |
| 1591 if (TTY_FLAGS (con).meta_key) | |
| 1592 tty.main.sg_flags |= ANYP; | |
| 1593 /* #### should we be using RAW mode here? */ | |
| 1594 tty.main.sg_flags |= /* interrupt_input ? RAW : */ CBREAK; | |
| 1595 #endif /* not HAVE_TERMIO */ | |
| 1596 | |
| 1597 /* If going to use CBREAK mode, we must request C-g to interrupt | |
| 1598 and turn off start and stop chars, etc. If not going to use | |
| 1599 CBREAK mode, do this anyway so as to turn off local flow | |
| 1600 control for user coming over network on 4.2; in this case, | |
| 1601 only t_stopc and t_startc really matter. */ | |
| 1602 #ifndef HAVE_TERMIO | |
| 1603 #ifdef HAVE_TCHARS | |
| 1604 /* Note: if not using CBREAK mode, it makes no difference how we | |
| 1605 set this */ | |
| 1606 tty.tchars = new_tchars; | |
| 2828 | 1607 tty.tchars.t_intrc = event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1608 if (TTY_FLAGS (con).flow_control) |
| 1609 { | |
| 1610 tty.tchars.t_startc = '\021'; | |
| 1611 tty.tchars.t_stopc = '\023'; | |
| 1612 } | |
| 1613 | |
| 1614 tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | | |
| 1615 CONSOLE_TTY_DATA (con)->old_tty.lmode; | |
| 1616 #endif /* HAVE_TCHARS */ | |
| 1617 #endif /* not HAVE_TERMIO */ | |
| 1618 | |
| 1619 #ifdef HAVE_LTCHARS | |
| 1620 tty.ltchars = new_ltchars; | |
| 1621 #endif /* HAVE_LTCHARS */ | |
| 1622 | |
| 430 | 1623 emacs_set_tty (input_fd, &tty, 0); |
| 428 | 1624 |
| 1625 /* This code added to insure that, if flow-control is not to be used, | |
| 1626 we have an unlocked terminal at the start. */ | |
| 1627 | |
| 1628 #ifdef TCXONC | |
| 1629 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TCXONC, 1); | |
| 1630 #endif | |
| 1631 #ifdef TIOCSTART | |
| 1632 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TIOCSTART, 0); | |
| 1633 #endif | |
| 1634 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1635 #if defined (HAVE_TERMIOS) |
| 428 | 1636 #ifdef TCOON |
| 1637 if (!TTY_FLAGS (con).flow_control) tcflow (input_fd, TCOON); | |
| 1638 #endif | |
| 1639 #endif | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1640 |
| 428 | 1641 set_tty_modes (con); |
| 1642 } | |
| 1643 | |
| 1644 #endif /* HAVE_TTY */ | |
| 1645 | |
| 1646 void | |
| 2340 | 1647 init_one_device ( |
| 1648 #if defined(HAVE_TTY) || (defined(SIGIO) && !defined(BROKEN_SIGIO)) | |
| 1649 struct device *d | |
| 1650 #else | |
| 1651 struct device *UNUSED (d) | |
| 1652 #endif | |
| 1653 ) | |
| 428 | 1654 { |
| 1655 #ifdef HAVE_TTY | |
| 1656 if (DEVICE_TTY_P (d)) | |
| 1657 tty_init_sys_modes_on_device (d); | |
| 1658 #endif | |
| 1659 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1660 if (!DEVICE_STREAM_P (d)) | |
| 1661 { | |
| 1662 init_sigio_on_device (d); | |
| 1663 request_sigio_on_device (d); | |
| 1664 } | |
| 1665 #endif | |
| 1666 } | |
| 1667 | |
| 1668 void | |
| 1669 init_one_console (struct console *con) | |
| 1670 { | |
| 1671 Lisp_Object devcons; | |
| 1672 | |
| 1673 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1674 { | |
| 1675 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1676 | |
| 1677 init_one_device (d); | |
| 1678 } | |
| 1679 } | |
| 1680 | |
| 1681 void | |
| 1682 reinit_initial_console (void) | |
| 1683 { | |
| 1684 munge_process_groups (); | |
| 1685 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1686 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1687 init_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1688 } | |
| 1689 | |
| 1690 | |
| 1691 /* ------------------------------------------------------ */ | |
| 1692 /* Other TTY functions */ | |
| 1693 /* ------------------------------------------------------ */ | |
| 1694 | |
| 1695 #ifdef HAVE_TTY | |
| 1696 | |
| 1697 #if 0 /* not currently used */ | |
| 1698 | |
| 1699 /* Return nonzero if safe to use tabs in output. | |
| 1700 At the time this is called, init_sys_modes has not been done yet. */ | |
| 1701 | |
| 1702 int | |
| 2340 | 1703 tabs_safe_p (struct device *USED_IF_TTY (d)) |
| 428 | 1704 { |
| 1705 #ifdef HAVE_TTY | |
| 1706 if (DEVICE_TTY_P (d)) | |
| 1707 { | |
| 1708 struct emacs_tty tty; | |
| 1709 | |
| 430 | 1710 emacs_get_tty (DEVICE_INFD (d), &tty); |
| 428 | 1711 return EMACS_TTY_TABS_OK (&tty); |
| 1712 } | |
| 1713 #endif | |
| 1714 return 1; | |
| 1715 } | |
| 1716 | |
| 1717 #endif /* 0 */ | |
| 1718 | |
| 1719 /* Get terminal size from system. | |
| 1720 Store number of lines into *heightp and width into *widthp. | |
| 1721 If zero or a negative number is stored, the value is not valid. */ | |
| 1722 | |
| 1723 void | |
| 1724 get_tty_device_size (struct device *d, int *widthp, int *heightp) | |
| 1725 { | |
| 1726 int input_fd = DEVICE_INFD (d); | |
| 1727 | |
| 1728 assert (DEVICE_TTY_P (d)); | |
| 1729 | |
| 1730 #ifdef TIOCGWINSZ | |
| 1731 { | |
| 1732 /* BSD-style. */ | |
| 1733 struct winsize size; | |
| 1734 | |
| 1735 if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
| 1736 *widthp = *heightp = 0; | |
| 1737 else | |
| 1738 { | |
| 1739 *widthp = size.ws_col; | |
| 1740 *heightp = size.ws_row; | |
| 1741 } | |
| 1742 } | |
| 1743 #elif defined TIOCGSIZE | |
| 1744 { | |
| 1745 /* SunOS - style. */ | |
| 1746 struct ttysize size; | |
| 1747 | |
| 1748 if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
| 1749 *widthp = *heightp = 0; | |
| 1750 else | |
| 1751 { | |
| 1752 *widthp = size.ts_cols; | |
| 1753 *heightp = size.ts_lines; | |
| 1754 } | |
| 1755 } | |
| 1756 #else /* system doesn't know size */ | |
| 1757 | |
| 1758 *widthp = 0; | |
| 1759 *heightp = 0; | |
| 1760 | |
| 1761 #endif /* not !TIOCGWINSZ */ | |
| 1762 } | |
| 1763 | |
| 1764 #endif /* HAVE_TTY */ | |
| 1765 | |
| 1766 | |
| 1767 /* ------------------------------------------------------ */ | |
| 1768 /* Is device 8 bit ? */ | |
| 1769 /* ------------------------------------------------------ */ | |
| 1770 | |
| 1771 #ifdef HAVE_TTY | |
| 1772 | |
| 1773 int | |
| 1774 eight_bit_tty (struct device *d) | |
| 1775 { | |
| 1776 struct emacs_tty s; | |
| 1777 int input_fd; | |
| 1778 int eight_bit = 0; | |
| 1779 | |
| 1780 assert (DEVICE_TTY_P (d)); | |
| 1781 input_fd = DEVICE_INFD (d); | |
| 1782 | |
| 430 | 1783 emacs_get_tty (input_fd, &s); |
| 428 | 1784 |
| 1785 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1786 eight_bit = (s.main.c_cflag & CSIZE) == CS8; | |
| 1787 #else | |
| 1788 eight_bit = 0; /* I don't know how to do it */ | |
| 1789 #endif | |
| 1790 return eight_bit; | |
| 1791 } | |
| 1792 | |
| 1793 #endif /* HAVE_TTY */ | |
| 1794 | |
| 1795 | |
| 1796 /* ------------------------------------------------------ */ | |
| 1797 /* Resetting a device */ | |
| 1798 /* ------------------------------------------------------ */ | |
| 1799 | |
| 1800 #ifdef HAVE_TTY | |
| 1801 | |
| 1802 /* Prepare the terminal for exiting Emacs; move the cursor to the | |
| 1803 bottom of the frame, turn off interrupt-driven I/O, etc. */ | |
| 1804 static void | |
| 1805 tty_reset_sys_modes_on_device (struct device *d) | |
| 1806 { | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1807 #if defined (BSD) |
| 2286 | 1808 int output_fd; |
| 1809 #endif | |
| 1810 int input_fd; | |
| 428 | 1811 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1812 | |
| 1813 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1814 #if defined (BSD) |
| 428 | 1815 output_fd = CONSOLE_TTY_DATA (con)->outfd; |
| 2286 | 1816 #endif |
| 428 | 1817 |
| 1818 tty_redisplay_shutdown (con); | |
| 1819 /* reset_tty_modes() flushes the connection at its end. */ | |
| 1820 reset_tty_modes (con); | |
| 1821 | |
| 1822 #if defined (BSD) | |
| 1823 /* Avoid possible loss of output when changing terminal modes. */ | |
| 1824 fsync (output_fd); | |
| 1825 #endif | |
| 1826 | |
| 430 | 1827 while (emacs_set_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty, 0) |
| 428 | 1828 < 0 && errno == EINTR) |
| 1829 ; | |
| 1830 } | |
| 1831 | |
| 1832 #endif /* HAVE_TTY */ | |
| 1833 | |
| 1834 void | |
| 1835 reset_one_device (struct device *d) | |
| 1836 { | |
| 1837 #ifdef HAVE_TTY | |
| 1838 if (DEVICE_TTY_P (d)) | |
| 1839 tty_reset_sys_modes_on_device (d); | |
| 1840 else | |
| 1841 #endif | |
| 1842 if (DEVICE_STREAM_P (d)) | |
| 1843 fflush (CONSOLE_STREAM_DATA (XCONSOLE (DEVICE_CONSOLE (d)))->out); | |
| 1844 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1845 if (!DEVICE_STREAM_P (d)) | |
| 1846 { | |
| 1847 unrequest_sigio_on_device (d); | |
| 1848 reset_sigio_on_device (d); | |
| 1849 } | |
| 1850 #endif | |
| 1851 } | |
| 1852 | |
| 1853 void | |
| 1854 reset_one_console (struct console *con) | |
| 1855 { | |
| 1856 /* Note: this can be called during GC. */ | |
| 1857 Lisp_Object devcons; | |
| 1858 | |
| 1859 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1860 { | |
| 1861 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1862 | |
| 1863 reset_one_device (d); | |
| 1864 } | |
| 1865 } | |
| 1866 | |
| 1867 void | |
| 1868 reset_all_consoles (void) | |
| 1869 { | |
| 1870 /* Note: this can be called during GC. */ | |
| 1871 Lisp_Object concons; | |
| 1872 | |
| 1873 CONSOLE_LOOP (concons) | |
| 1874 { | |
| 1875 struct console *con = XCONSOLE (XCAR (concons)); | |
| 1876 | |
| 1877 reset_one_console (con); | |
| 1878 } | |
| 1879 | |
| 1880 unmunge_process_groups (); | |
| 1881 } | |
| 1882 | |
| 1883 void | |
| 1884 reset_initial_console (void) | |
| 1885 { | |
| 1886 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1887 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1888 reset_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1889 unmunge_process_groups (); | |
| 1890 } | |
| 1891 | |
| 1892 | |
| 1893 /************************************************************************/ | |
| 1894 /* limits of text/data segments */ | |
| 1895 /************************************************************************/ | |
| 1896 | |
| 801 | 1897 /* Need start_of_data() as much as possible now, for total_data_usage(); |
| 1898 but with PDUMP and WIN32_NATIVE, can't currently do it. */ | |
| 1330 | 1899 #if ! (defined (PDUMP) && defined (WIN32_NATIVE) && defined (SYSTEM_MALLOC)) |
| 428 | 1900 #define NEED_STARTS |
| 1901 #endif | |
| 1902 | |
| 1903 #ifdef NEED_STARTS | |
| 1904 /* Some systems that cannot dump also cannot implement these. */ | |
| 1905 | |
| 1906 /* | |
| 1907 * Return the address of the start of the text segment prior to | |
| 1908 * doing an unexec. After unexec the return value is undefined. | |
| 1909 * See crt0.c for further explanation and _start. | |
| 1910 * | |
| 1911 */ | |
| 1912 | |
| 801 | 1913 #if !defined (HAVE_TEXT_START) && !defined (PDUMP) |
| 440 | 1914 |
| 442 | 1915 EXTERN_C int _start (void); |
| 428 | 1916 |
| 1917 char * | |
| 1918 start_of_text (void) | |
| 1919 { | |
| 1920 #ifdef TEXT_START | |
| 442 | 1921 return (char *) TEXT_START; |
| 428 | 1922 #else |
| 442 | 1923 return (char *) _start; |
| 428 | 1924 #endif /* TEXT_START */ |
| 1925 } | |
| 440 | 1926 #endif /* !defined(HAVE_TEXT_START) && !defined(PDUMP) */ |
| 428 | 1927 |
| 1928 /* | |
| 1929 * Return the address of the start of the data segment prior to | |
| 1930 * doing an unexec. After unexec the return value is undefined. | |
| 442 | 1931 * See ecrt0.c for further information and definition of data_start. |
| 428 | 1932 * |
| 1933 * Apparently, on BSD systems this is etext at startup. On | |
| 1934 * USG systems (swapping) this is highly mmu dependent and | |
| 1935 * is also dependent on whether or not the program is running | |
| 1936 * with shared text. Generally there is a (possibly large) | |
| 1937 * gap between end of text and start of data with shared text. | |
| 1938 * | |
| 1939 * On Uniplus+ systems with shared text, data starts at a | |
| 1940 * fixed address. Each port (from a given oem) is generally | |
| 1941 * different, and the specific value of the start of data can | |
| 1942 * be obtained via the UniPlus+ specific "uvar" system call, | |
| 1943 * however the method outlined in crt0.c seems to be more portable. | |
| 1944 * | |
| 1945 * Probably what will have to happen when a USG unexec is available, | |
| 1946 * at least on UniPlus, is temacs will have to be made unshared so | |
| 1947 * that text and data are contiguous. Then once loadup is complete, | |
| 1948 * unexec will produce a shared executable where the data can be | |
| 1949 * at the normal shared text boundary and the startofdata variable | |
| 1950 * will be patched by unexec to the correct value. | |
| 1951 * | |
| 1952 */ | |
| 1953 | |
| 801 | 1954 #if defined (ORDINARY_LINK) && !defined (MINGW) |
| 428 | 1955 extern char **environ; |
| 1956 #endif | |
| 1957 | |
| 1958 void * | |
| 1959 start_of_data (void) | |
| 1960 { | |
| 1961 #ifdef DATA_START | |
| 1962 return ((char *) DATA_START); | |
| 1963 #else | |
| 452 | 1964 #if defined (ORDINARY_LINK) || defined(PDUMP) |
| 428 | 1965 /* |
| 1966 * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
| 1967 * data_start isn't defined. We take the address of environ, which | |
| 1968 * is known to live at or near the start of the system crt0.c, and | |
| 1969 * we don't sweat the handful of bytes that might lose. | |
| 1970 */ | |
| 442 | 1971 #if defined (HEAP_IN_DATA) && !defined(PDUMP) |
| 428 | 1972 extern char* static_heap_base; |
| 1973 if (!initialized) | |
| 1974 return static_heap_base; | |
| 1975 #endif | |
| 801 | 1976 return ((char *) &environ); |
| 428 | 1977 #else |
| 1978 extern int data_start; | |
| 1979 return ((char *) &data_start); | |
| 1980 #endif /* ORDINARY_LINK */ | |
| 1981 #endif /* DATA_START */ | |
| 1982 } | |
| 1330 | 1983 #endif /* NEED_STARTS aka !(PDUMP && WIN32_NATIVE && SYSTEM_MALLOC) */ |
| 428 | 1984 |
| 801 | 1985 extern void *minimum_address_seen; /* from xmalloc() */ |
| 1986 extern void *maximum_address_seen; /* from xmalloc() */ | |
| 1987 | |
| 1988 Bytecount | |
| 1989 total_data_usage (void) | |
| 1990 { | |
| 1991 #ifdef NEED_STARTS | |
| 1992 void *data_start = start_of_data (); | |
| 1993 #else | |
| 1994 void *data_start = minimum_address_seen; | |
| 1995 #endif | |
| 854 | 1996 |
| 1315 | 1997 #ifndef WIN32_ANY |
| 814 | 1998 void *data_end = sbrk (0); |
| 801 | 1999 #else |
| 2000 void *data_end = maximum_address_seen; | |
| 2001 #endif | |
| 2002 | |
| 2003 /* Sanity checking -- the min determined by malloc() should always be | |
| 2004 greater than data start determined by other means. We could do the | |
| 2005 same check on the max, except that things like rel-alloc might | |
| 2006 invalidate it. */ | |
| 2007 if (minimum_address_seen && | |
| 2008 (char *) minimum_address_seen < (char *) data_start) | |
| 2009 data_start = minimum_address_seen; | |
| 2010 | |
| 2011 if (data_end < data_start) /* Huh?????????? */ | |
| 2012 data_end = maximum_address_seen; | |
| 2013 | |
| 2014 /* #### Doesn't seem to give good results on Windows; values are much | |
| 2015 higher than actual memory usage. How to fix??? */ | |
| 2016 return (char *) data_end - (char *) data_start; | |
| 2017 } | |
| 2018 | |
| 428 | 2019 |
| 2020 /************************************************************************/ | |
| 2021 /* get the system name */ | |
| 2022 /************************************************************************/ | |
| 2023 | |
| 2024 /* init_system_name sets up the string for the Lisp function | |
| 2025 system-name to return. */ | |
| 2026 | |
| 2027 extern Lisp_Object Vsystem_name; | |
| 2028 | |
| 2029 void | |
| 2030 init_system_name (void) | |
| 2031 { | |
| 442 | 2032 #if defined (WIN32_NATIVE) |
| 771 | 2033 Extbyte hostname[MAX_XETCHAR_SIZE * (MAX_COMPUTERNAME_LENGTH + 1)]; |
| 2034 DWORD size = sizeof (hostname) / XETCHAR_SIZE; | |
| 2035 qxeGetComputerName (hostname, &size); | |
| 2036 Vsystem_name = build_tstr_string (hostname); | |
| 428 | 2037 #elif !defined (HAVE_GETHOSTNAME) |
| 2038 struct utsname uts; | |
| 2039 uname (&uts); | |
| 2040 Vsystem_name = build_string (uts.nodename); | |
| 2041 #else /* HAVE_GETHOSTNAME */ | |
| 647 | 2042 int hostname_size = 256; |
| 2367 | 2043 /* !!#### Needs review */ |
| 851 | 2044 char *hostname = (char *) ALLOCA (hostname_size); |
| 428 | 2045 |
| 2046 /* Try to get the host name; if the buffer is too short, try | |
| 2047 again. Apparently, the only indication gethostname gives of | |
| 2048 whether the buffer was large enough is the presence or absence | |
| 2049 of a '\0' in the string. Eech. */ | |
| 2050 for (;;) | |
| 2051 { | |
| 2052 gethostname (hostname, hostname_size - 1); | |
| 2053 hostname[hostname_size - 1] = '\0'; | |
| 2054 | |
| 2055 /* Was the buffer large enough for the '\0'? */ | |
| 647 | 2056 if ((int) strlen (hostname) < (hostname_size - 1)) |
| 428 | 2057 break; |
| 2058 | |
| 2059 hostname_size <<= 1; | |
| 2367 | 2060 /* !!#### Needs review */ |
| 851 | 2061 hostname = (char *) ALLOCA (hostname_size); |
| 428 | 2062 } |
| 558 | 2063 # if defined( HAVE_SOCKETS) |
| 428 | 2064 /* Turn the hostname into the official, fully-qualified hostname. |
| 2065 Don't do this if we're going to dump; this can confuse system | |
| 2066 libraries on some machines and make the dumped emacs core dump. */ | |
| 2067 if (initialized) | |
| 2068 if (!strchr (hostname, '.')) | |
| 2069 { | |
| 440 | 2070 # if !(defined(HAVE_GETADDRINFO) && defined(HAVE_GETNAMEINFO)) |
| 428 | 2071 struct hostent *hp = NULL; |
| 2072 int count; | |
| 440 | 2073 # ifdef TRY_AGAIN |
| 428 | 2074 for (count = 0; count < 10; count++) |
| 2075 { | |
| 2076 h_errno = 0; | |
| 440 | 2077 # endif |
| 428 | 2078 /* Some systems can't handle SIGALARM/SIGIO in gethostbyname(). */ |
| 2079 stop_interrupts (); | |
| 2080 hp = gethostbyname (hostname); | |
| 2081 start_interrupts (); | |
| 440 | 2082 # ifdef TRY_AGAIN |
| 428 | 2083 if (! (hp == 0 && h_errno == TRY_AGAIN)) |
| 2084 break; | |
| 2085 Fsleep_for (make_int (1)); | |
| 2086 } | |
| 440 | 2087 # endif |
| 428 | 2088 if (hp) |
| 2089 { | |
| 442 | 2090 const char *fqdn = (const char *) hp->h_name; |
| 428 | 2091 |
| 2092 if (!strchr (fqdn, '.')) | |
| 2093 { | |
| 2094 /* We still don't have a fully qualified domain name. | |
| 2095 Try to find one in the list of alternate names */ | |
| 2096 char **alias = hp->h_aliases; | |
| 2097 while (*alias && !strchr (*alias, '.')) | |
| 2098 alias++; | |
| 2099 if (*alias) | |
| 2100 fqdn = *alias; | |
| 2101 } | |
| 2367 | 2102 /* !!#### Needs review */ |
| 851 | 2103 hostname = (char *) ALLOCA (strlen (fqdn) + 1); |
| 428 | 2104 strcpy (hostname, fqdn); |
| 2105 } | |
| 440 | 2106 # else /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ |
| 2107 struct addrinfo hints, *res; | |
| 2108 | |
| 2109 xzero (hints); | |
| 2110 hints.ai_flags = AI_CANONNAME; | |
| 724 | 2111 #ifdef IPV6_CANONICALIZE |
| 440 | 2112 hints.ai_family = AF_UNSPEC; |
| 724 | 2113 #else |
| 2114 hints.ai_family = PF_INET; | |
| 2115 #endif | |
| 440 | 2116 hints.ai_socktype = SOCK_STREAM; |
| 2117 hints.ai_protocol = 0; | |
| 2118 if (!getaddrinfo (hostname, NULL, &hints, &res)) | |
| 2119 { | |
| 2367 | 2120 /* !!#### Needs review */ |
| 851 | 2121 hostname = (char *) ALLOCA (strlen (res->ai_canonname) + 1); |
| 440 | 2122 strcpy (hostname, res->ai_canonname); |
| 2123 | |
| 2124 freeaddrinfo (res); | |
| 2125 } | |
| 2126 # endif /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ | |
| 428 | 2127 } |
| 2128 # endif /* HAVE_SOCKETS */ | |
| 2129 Vsystem_name = build_string (hostname); | |
| 2130 #endif /* HAVE_GETHOSTNAME */ | |
| 2131 { | |
| 867 | 2132 Ibyte *p; |
| 428 | 2133 Bytecount i; |
| 2134 | |
| 2135 for (i = 0, p = XSTRING_DATA (Vsystem_name); | |
| 2136 i < XSTRING_LENGTH (Vsystem_name); | |
| 2137 i++, p++) | |
| 2138 { | |
| 2139 if (*p == ' ' || *p == '\t') | |
| 2140 *p = '-'; | |
| 2141 } | |
| 2142 } | |
| 2143 } | |
| 2144 | |
| 2145 | |
| 2146 /************************************************************************/ | |
| 2147 /* Emulation of select() */ | |
| 2148 /************************************************************************/ | |
| 2149 | |
| 2150 #ifndef HAVE_SELECT | |
| 2151 | |
| 2152 ERROR: XEmacs requires a working select(). | |
| 2153 | |
| 2154 #endif /* not HAVE_SELECT */ | |
| 2155 | |
| 2156 | |
| 2157 /************************************************************************/ | |
| 2158 /* Emulation of signal stuff */ | |
| 2159 /************************************************************************/ | |
| 2160 | |
| 2161 /* BSD 4.1 crap deleted. 4.2 was released in 1983, for God's sake! I | |
| 2162 can't imagine that anyone is actually running that OS any more. | |
| 2163 You can't use X under it (I think) because there's no select(). | |
| 2164 Anyway, the signal stuff has all been changed. If someone wants to | |
| 2165 get this stuff working again, look in the FSF Emacs sources. */ | |
| 2166 | |
| 2167 /* POSIX signals support - DJB */ | |
| 2168 | |
| 2169 #ifdef HAVE_SIGPROCMASK | |
| 2170 | |
| 2171 /* #### Is there any reason this is static global rather than local? */ | |
| 2172 static struct sigaction new_action, old_action; | |
| 2173 | |
| 2174 signal_handler_t | |
| 613 | 2175 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2176 { |
| 2177 #if 0 | |
| 2178 | |
| 2179 /* XEmacs works better if system calls are *not* restarted. | |
| 2180 This allows C-g to interrupt reads and writes, on most systems. | |
| 2181 | |
| 2182 #### Another possibility is to just longjmp() out of the signal | |
| 2183 handler. According to W.R. Stevens, this should be OK on all | |
| 2184 systems. However, I don't want to deal with the potential | |
| 2185 evil ramifications of this at this point. */ | |
| 2186 | |
| 2187 sigemptyset (&new_action.sa_mask); | |
| 2188 new_action.sa_handler = action; | |
| 2189 #if defined (SA_RESTART) | |
| 2190 /* Emacs mostly works better with restartable system services. If this | |
| 2191 * flag exists, we probably want to turn it on here. | |
| 2192 */ | |
| 2193 new_action.sa_flags = SA_RESTART; | |
| 2194 #else | |
| 2195 new_action.sa_flags = 0; | |
| 2196 #endif | |
| 2197 sigaction (signal_number, &new_action, &old_action); | |
| 2198 return (old_action.sa_handler); | |
| 2199 | |
| 2200 #else /* not 0 */ | |
| 2201 | |
| 2202 sigemptyset (&new_action.sa_mask); | |
| 2203 new_action.sa_handler = action; | |
| 2204 #if defined (SA_INTERRUPT) /* don't restart system calls, under SunOS */ | |
| 2205 new_action.sa_flags = SA_INTERRUPT; | |
| 2206 #else | |
| 2207 new_action.sa_flags = 0; | |
| 2208 #endif | |
| 2209 sigaction (signal_number, &new_action, &old_action); | |
| 2210 return (signal_handler_t) (old_action.sa_handler); | |
| 2211 | |
| 2212 #endif /* not 0 */ | |
| 2213 } | |
| 2214 | |
| 2215 #elif defined (HAVE_SIGBLOCK) | |
| 2216 | |
| 2217 /* We use sigvec() rather than signal() if we have it, because | |
| 2218 it lets us specify interruptible system calls. */ | |
| 2219 signal_handler_t | |
| 613 | 2220 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2221 { |
| 2222 struct sigvec vec, ovec; | |
| 2223 | |
| 2224 vec.sv_handler = action; | |
| 2225 vec.sv_mask = 0; | |
| 2226 #ifdef SV_INTERRUPT /* don't restart system calls */ | |
| 2227 vec.sv_flags = SV_INTERRUPT; | |
| 2228 #else | |
| 2229 vec.sv_flags = 0; | |
| 2230 #endif | |
| 2231 | |
| 2232 sigvec (signal_number, &vec, &ovec); | |
| 2233 | |
| 2234 return (ovec.sv_handler); | |
| 2235 } | |
| 2236 | |
| 2237 #endif /* HAVE_SIGBLOCK (HAVE_SIGPROCMASK) */ | |
| 2238 | |
| 2239 | |
| 2240 /************************************************************************/ | |
| 2241 /* Emulation of strerror() and errno support */ | |
| 2242 /************************************************************************/ | |
| 2243 | |
| 2244 #ifndef HAVE_STRERROR | |
| 2245 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
2246 #if !defined(__alpha) && !defined(MACH) && !defined(LINUX) && !defined(IRIX) && !defined(__NetBSD__) |
| 428 | 2247 /* Linux added here by Raymond L. Toy <toy@alydar.crd.ge.com> for XEmacs. */ |
| 2248 /* Irix added here by gparker@sni-usa.com for XEmacs. */ | |
| 2249 /* NetBSD added here by James R Grinter <jrg@doc.ic.ac.uk> for XEmacs */ | |
| 442 | 2250 extern const char *sys_errlist[]; |
| 428 | 2251 extern int sys_nerr; |
| 2252 #endif | |
| 2253 | |
| 2254 #ifdef __NetBSD__ | |
| 2255 extern char *sys_errlist[]; | |
| 2256 extern int sys_nerr; | |
| 2257 #endif | |
| 2258 | |
| 2259 | |
| 442 | 2260 const char * |
| 428 | 2261 strerror (int errnum) |
| 2262 { | |
| 2263 if (errnum >= 0 && errnum < sys_nerr) | |
| 2264 return sys_errlist[errnum]; | |
| 442 | 2265 return ((const char *) GETTEXT ("Unknown error")); |
| 428 | 2266 } |
| 2267 | |
| 2268 #endif /* ! HAVE_STRERROR */ | |
| 2269 | |
| 2270 | |
| 2271 /************************************************************************/ | |
| 2272 /* Encapsulations of system calls */ | |
| 2273 /************************************************************************/ | |
| 2274 | |
| 2275 /***************** low-level calls ****************/ | |
| 2276 | |
| 2277 /* | |
| 2278 * On USG systems the system calls are INTERRUPTIBLE by signals | |
| 2279 * that the user program has elected to catch. Thus the system call | |
| 2280 * must be retried in these cases. To handle this without massive | |
| 2281 * changes in the source code, we remap the standard system call names | |
| 2282 * to names for our own functions in sysdep.c that do the system call | |
| 2283 * with retries. Actually, for portability reasons, it is good | |
| 2284 * programming practice, as this example shows, to limit all actual | |
| 2285 * system calls to a single occurrence in the source. Sure, this | |
| 2286 * adds an extra level of function call overhead but it is almost | |
| 2287 * always negligible. Fred Fish, Unisoft Systems Inc. | |
| 2288 */ | |
| 2289 | |
| 2290 /* Ben sez: read Dick Gabriel's essay about the Worse Is Better | |
| 2291 approach to programming and its connection to the silly | |
| 2292 interruptible-system-call business. To find it, look on | |
| 2340 | 2293 Jamie's home page (http://www.jwz.org/doc/worse-is-better.html). */ |
| 428 | 2294 |
| 771 | 2295 #ifdef WIN32_NATIVE |
| 2296 | |
| 2297 static int | |
| 2298 underlying_open_1 (const Extbyte *path, int oflag, int mode) | |
| 2299 { | |
| 2300 if (XEUNICODE_P) | |
| 2301 return _wopen ((const wchar_t *) path, oflag, mode); | |
| 2302 else | |
| 2303 return _open (path, oflag, mode); | |
| 2304 } | |
| 2305 | |
| 2306 #endif /* WIN32_NATIVE */ | |
| 2307 | |
| 2367 | 2308 /* Just call open() with normal open() semantics, with some fixups for |
| 2309 problems under Windows. */ | |
| 771 | 2310 |
| 2311 static int | |
| 2312 underlying_open (const Extbyte *path, int oflag, int mode) | |
| 2313 { | |
| 2314 #ifdef WIN32_NATIVE | |
| 2315 { | |
| 2316 /* Try to open file without _O_CREAT, to be able to write to hidden | |
| 2317 and system files. Force all file handles to be | |
| 2318 non-inheritable. */ | |
| 2319 int res = underlying_open_1 (path, (oflag & ~_O_CREAT) | _O_NOINHERIT, | |
| 2320 mode); | |
| 2321 if (res >= 0) | |
| 2322 return res; | |
| 2323 return underlying_open_1 (path, oflag | _O_NOINHERIT, mode); | |
| 2324 } | |
| 2325 #else | |
| 2326 return open (path, oflag, mode); | |
| 2327 #endif /* WIN32_NATIVE */ | |
| 2328 } | |
| 2329 | |
| 2367 | 2330 static int |
| 2331 retry_open_1 (const Extbyte *path, int oflag, int mode) | |
| 428 | 2332 { |
| 440 | 2333 #ifdef INTERRUPTIBLE_OPEN |
| 428 | 2334 { |
| 2335 int rtnval; | |
| 771 | 2336 while ((rtnval = underlying_open (path, oflag, mode)) == -1 |
| 428 | 2337 && (errno == EINTR)) |
| 2338 DO_NOTHING; | |
| 2339 return rtnval; | |
| 2340 } | |
| 2341 #else | |
| 771 | 2342 return underlying_open (path, oflag, mode); |
| 428 | 2343 #endif |
| 2344 } | |
| 771 | 2345 |
| 2367 | 2346 /* A version of open() that retries when interrupted. Operates on |
| 2347 externally-encoded filenames. */ | |
| 2348 | |
| 2349 int XCDECL | |
| 2350 retry_open (const Extbyte *path, int oflag, ...) | |
| 2351 { | |
| 2352 int mode; | |
| 2353 va_list ap; | |
| 2354 | |
| 2355 va_start (ap, oflag); | |
| 2356 mode = va_arg (ap, int); | |
| 2357 va_end (ap); | |
| 2358 | |
| 2359 return retry_open_1 (path, oflag, mode); | |
| 2360 } | |
| 2361 | |
| 2362 #if defined (WIN32_NATIVE) && defined (WEXTTEXT_IS_WIDE) | |
| 2363 | |
| 2364 /* Like retry_open() but operate on Wexttext filenames. */ | |
| 2365 | |
| 2366 int XCDECL | |
| 2367 wext_retry_open (const Wexttext *path, int oflag, ...) | |
| 2368 { | |
| 2369 int mode; | |
| 2370 va_list ap; | |
| 2371 | |
| 2372 va_start (ap, oflag); | |
| 2373 mode = va_arg (ap, int); | |
| 2374 va_end (ap); | |
| 2375 | |
| 2376 if (!XEUNICODE_P) | |
| 2377 return retry_open_1 (WEXTTEXT_TO_MULTIBYTE (path), oflag, mode); | |
| 2378 else | |
| 2379 return retry_open_1 ((Extbyte *) path, oflag, mode); | |
| 2380 } | |
| 2381 | |
| 2382 #endif | |
| 2383 | |
| 771 | 2384 /* The basic external entry point to open(). Handles conversion to |
| 2385 external encoding, interruptions, etc. */ | |
| 2386 | |
| 872 | 2387 int XCDECL |
| 867 | 2388 qxe_open (const Ibyte *path, int oflag, ...) |
| 771 | 2389 { |
| 2390 Extbyte *pathout; | |
| 2391 int mode; | |
| 2392 va_list ap; | |
| 2393 | |
| 2394 va_start (ap, oflag); | |
| 2395 mode = va_arg (ap, int); | |
| 2396 va_end (ap); | |
| 2397 | |
| 2398 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2399 return retry_open (pathout, oflag, mode); | |
| 2400 } | |
| 2401 | |
| 2402 /* Like qxe_open, only when open() is interrupted by EINTR, check for | |
| 428 | 2403 QUIT. This allows the callers of this function to be interrupted |
| 2404 with C-g when, say, reading from named pipes. However, this should | |
| 1123 | 2405 be used with caution, as it can run random Lisp code (although it |
| 2406 cannot GC). | |
| 428 | 2407 |
| 2408 This function will not function as expected on systems where open() | |
| 2409 is not interrupted by C-g. However, the worst that can happen is | |
| 2410 the fallback to simple open(). */ | |
| 2411 int | |
| 867 | 2412 qxe_interruptible_open (const Ibyte *path, int oflag, int mode) |
| 428 | 2413 { |
| 2414 /* This function can GC */ | |
| 771 | 2415 Extbyte *pathout; |
| 2416 | |
| 2417 PATHNAME_CONVERT_OUT (path, pathout); | |
| 428 | 2418 |
| 442 | 2419 #ifdef WIN32_NATIVE |
| 440 | 2420 /* Make all handles non-inheritable */ |
| 2421 oflag |= _O_NOINHERIT; | |
| 2422 #endif | |
| 2423 | |
| 428 | 2424 for (;;) |
| 2425 { | |
| 771 | 2426 int rtnval = underlying_open (pathout, oflag, mode); |
| 428 | 2427 if (!(rtnval == -1 && errno == EINTR)) |
| 2428 return rtnval; | |
| 2429 /* open() was interrupted. Was QUIT responsible? */ | |
| 2430 QUIT; | |
| 2431 } | |
| 2432 } | |
| 2433 | |
| 2434 int | |
| 771 | 2435 retry_close (int filedes) |
| 428 | 2436 { |
| 2437 #ifdef INTERRUPTIBLE_CLOSE | |
| 2438 int did_retry = 0; | |
| 2439 REGISTER int rtnval; | |
| 2440 | |
| 2441 while ((rtnval = close (filedes)) == -1 | |
| 2442 && (errno == EINTR)) | |
| 2443 did_retry = 1; | |
| 2444 | |
| 2445 /* If close is interrupted SunOS 4.1 may or may not have closed the | |
| 2446 file descriptor. If it did the second close will fail with | |
| 2447 errno = EBADF. That means we have succeeded. */ | |
| 2448 if (rtnval == -1 && did_retry && errno == EBADF) | |
| 2449 return 0; | |
| 2450 | |
| 2451 return rtnval; | |
| 2452 #else | |
| 2453 return close (filedes); | |
| 2454 #endif | |
| 2455 } | |
| 771 | 2456 |
| 2457 static ssize_t | |
| 2458 retry_read_1 (int fildes, void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2459 { |
| 2460 ssize_t rtnval; | |
| 2461 | |
| 2462 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */ | |
| 2463 while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
| 2464 && (errno == EINTR)) | |
| 2465 { | |
| 2466 if (allow_quit) | |
| 853 | 2467 QUIT; |
| 428 | 2468 } |
| 2469 return rtnval; | |
| 2470 } | |
| 2471 | |
| 2472 ssize_t | |
| 771 | 2473 retry_read (int fildes, void *buf, size_t nbyte) |
| 428 | 2474 { |
| 771 | 2475 return retry_read_1 (fildes, buf, nbyte, 0); |
| 428 | 2476 } |
| 771 | 2477 |
| 2478 static ssize_t | |
| 2479 retry_write_1 (int fildes, const void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2480 { |
| 2481 ssize_t bytes_written = 0; | |
| 442 | 2482 const char *b = (const char *) buf; |
| 428 | 2483 |
| 2484 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */ | |
| 2485 while (nbyte > 0) | |
| 2486 { | |
| 2487 ssize_t rtnval = write (fildes, b, nbyte); | |
| 2488 | |
| 2489 if (allow_quit) | |
| 853 | 2490 QUIT; |
| 428 | 2491 |
| 2492 if (rtnval == -1) | |
| 2493 { | |
| 2494 if (errno == EINTR) | |
| 2495 continue; | |
| 2496 else | |
| 2497 return bytes_written ? bytes_written : -1; | |
| 2498 } | |
| 2499 b += rtnval; | |
| 2500 nbyte -= rtnval; | |
| 2501 bytes_written += rtnval; | |
| 2502 } | |
| 2503 return bytes_written; | |
| 2504 } | |
| 2505 | |
| 2506 ssize_t | |
| 771 | 2507 retry_write (int fildes, const void *buf, size_t nbyte) |
| 428 | 2508 { |
| 771 | 2509 return retry_write_1 (fildes, buf, nbyte, 0); |
| 428 | 2510 } |
| 771 | 2511 |
| 2512 /* Versions of read() and write() that allow quitting out of the actual | |
| 2513 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the | |
| 2514 signal handler) because that's way too losing. | |
| 2515 | |
| 2516 (#### Actually, longjmp()ing out of the signal handler may not be | |
| 2517 as losing as I thought. See qxe_reliable_signal() in sysdep.c.) */ | |
| 2518 | |
| 2519 Bytecount | |
| 2520 read_allowing_quit (int fildes, void *buf, Bytecount size) | |
| 2521 { | |
| 2522 QUIT; | |
| 2523 return retry_read_1 (fildes, buf, size, 1); | |
| 2524 } | |
| 2525 | |
| 2526 Bytecount | |
| 2527 write_allowing_quit (int fildes, const void *buf, Bytecount size) | |
| 2528 { | |
| 2529 QUIT; | |
| 2530 return retry_write_1 (fildes, buf, size, 1); | |
| 2531 } | |
| 428 | 2532 |
| 2533 | |
| 2534 /**************** stdio calls ****************/ | |
| 2535 | |
| 2536 /* There is at least some evidence that the stdio calls are interruptible | |
| 2537 just like the normal system calls, at least on some systems. In any | |
| 2538 case, it doesn't hurt to encapsulate them. */ | |
| 2539 | |
| 2540 /* #### Should also encapsulate fflush(). | |
| 2541 #### Should conceivably encapsulate getchar() etc. What a pain! */ | |
| 2542 | |
| 2543 FILE * | |
| 2367 | 2544 retry_fopen (const Extbyte *path, const Ascbyte *mode) |
| 428 | 2545 { |
| 771 | 2546 #ifdef WIN32_NATIVE |
| 2547 int fd; | |
| 2548 int oflag; | |
| 2367 | 2549 const Ascbyte *mode_save = mode; |
| 771 | 2550 |
| 2551 /* Force all file handles to be non-inheritable. This is necessary to | |
| 2552 ensure child processes don't unwittingly inherit handles that might | |
| 2553 prevent future file access. */ | |
| 2554 | |
| 2555 if (mode[0] == 'r') | |
| 2556 oflag = O_RDONLY; | |
| 2557 else if (mode[0] == 'w' || mode[0] == 'a') | |
| 2558 oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
| 2559 else | |
| 2560 return NULL; | |
| 2561 | |
| 2562 /* Only do simplistic option parsing. */ | |
| 2563 while (*++mode) | |
| 2564 if (mode[0] == '+') | |
| 2565 { | |
| 2566 oflag &= ~(O_RDONLY | O_WRONLY); | |
| 2567 oflag |= O_RDWR; | |
| 2568 } | |
| 2569 else if (mode[0] == 'b') | |
| 2570 { | |
| 2571 oflag &= ~O_TEXT; | |
| 2572 oflag |= O_BINARY; | |
| 2573 } | |
| 2574 else if (mode[0] == 't') | |
| 2575 { | |
| 2576 oflag &= ~O_BINARY; | |
| 2577 oflag |= O_TEXT; | |
| 2578 } | |
| 2579 else break; | |
| 2580 | |
| 2581 fd = underlying_open (path, oflag, 0644); | |
| 2582 if (fd < 0) | |
| 2583 return NULL; | |
| 2584 | |
| 2585 return _fdopen (fd, mode_save); | |
| 428 | 2586 #elif defined (INTERRUPTIBLE_OPEN) |
| 2587 { | |
| 2588 FILE *rtnval; | |
| 771 | 2589 while (!(rtnval = fopen (path, mode)) && (errno == EINTR)) |
| 428 | 2590 DO_NOTHING; |
| 2591 return rtnval; | |
| 2592 } | |
| 2593 #else | |
| 771 | 2594 return fopen (path, mode); |
| 2595 #endif /* defined (INTERRUPTIBLE_OPEN) */ | |
| 428 | 2596 } |
| 771 | 2597 |
| 2598 FILE * | |
| 2367 | 2599 qxe_fopen (const Ibyte *path, const Ascbyte *mode) |
| 771 | 2600 { |
| 2601 Extbyte *pathout; | |
| 2602 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2603 return retry_fopen (pathout, mode); | |
| 2604 } | |
| 2605 | |
| 428 | 2606 int |
| 771 | 2607 retry_fclose (FILE *stream) |
| 428 | 2608 { |
| 2609 #ifdef INTERRUPTIBLE_CLOSE | |
| 2610 int rtnval; | |
| 2611 | |
| 2612 while ((rtnval = fclose (stream)) == EOF | |
| 2613 && (errno == EINTR)) | |
| 2614 ; | |
| 2615 return rtnval; | |
| 2616 #else | |
| 2617 return fclose (stream); | |
| 2618 #endif | |
| 2619 } | |
| 771 | 2620 |
| 428 | 2621 size_t |
| 771 | 2622 retry_fread (void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2623 { |
| 2624 #ifdef INTERRUPTIBLE_IO | |
| 2625 size_t rtnval; | |
| 2626 size_t items_read = 0; | |
| 2627 char *b = (char *) ptr; | |
| 2628 | |
| 2629 while (nitem > 0) | |
| 2630 { | |
| 2631 rtnval = fread (b, size, nitem, stream); | |
| 2632 if (rtnval == 0) | |
| 2633 { | |
| 2634 if (ferror (stream) && errno == EINTR) | |
| 2635 continue; | |
| 2636 else | |
| 2637 return items_read; | |
| 2638 } | |
| 2639 b += size*rtnval; | |
| 2640 nitem -= rtnval; | |
| 2641 items_read += rtnval; | |
| 2642 } | |
| 2643 return (items_read); | |
| 2644 #else | |
| 2645 return fread (ptr, size, nitem, stream); | |
| 2646 #endif | |
| 2647 } | |
| 771 | 2648 |
| 428 | 2649 size_t |
| 771 | 2650 retry_fwrite (const void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2651 { |
| 2652 #ifdef INTERRUPTIBLE_IO | |
| 2653 size_t rtnval; | |
| 2654 size_t items_written = 0; | |
| 442 | 2655 const char *b = (const char *) ptr; |
| 428 | 2656 |
| 2657 while (nitem > 0) | |
| 2658 { | |
| 2659 rtnval = fwrite (b, size, nitem, stream); | |
| 2660 if (rtnval == 0) | |
| 2661 { | |
| 2662 if (ferror (stream) && errno == EINTR) | |
| 2663 continue; | |
| 2664 else | |
| 2665 return items_written; | |
| 2666 } | |
| 2667 b += size*rtnval; | |
| 2668 nitem -= rtnval; | |
| 2669 items_written += rtnval; | |
| 2670 } | |
| 2671 return (items_written); | |
| 2672 #else | |
| 2673 return fwrite (ptr, size, nitem, stream); | |
| 2674 #endif | |
| 2675 } | |
| 2676 | |
| 2677 /********************* directory calls *******************/ | |
| 2678 | |
| 2679 int | |
| 867 | 2680 qxe_chdir (const Ibyte *path) |
| 428 | 2681 { |
| 771 | 2682 Extbyte *pathout; |
| 2683 PATHNAME_CONVERT_OUT (path, pathout); | |
| 442 | 2684 #ifdef WIN32_NATIVE |
| 771 | 2685 if (XEUNICODE_P) |
| 2686 return _wchdir ((const wchar_t *) pathout); | |
| 2687 else | |
| 2688 return _chdir (pathout); | |
| 428 | 2689 #else |
| 771 | 2690 return chdir (pathout); |
| 428 | 2691 #endif |
| 2692 } | |
| 771 | 2693 |
| 2694 int | |
| 2340 | 2695 qxe_mkdir (const Ibyte *path, |
| 2696 #ifdef WIN32_NATIVE | |
| 2697 mode_t UNUSED (mode) | |
| 2698 #else | |
| 2699 mode_t mode | |
| 2700 #endif | |
| 2701 ) | |
| 771 | 2702 { |
| 2703 Extbyte *pathout; | |
| 2704 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2705 #ifdef WIN32_NATIVE | |
| 2706 if (XEUNICODE_P) | |
| 2707 return _wmkdir ((const wchar_t *) pathout); | |
| 2708 else | |
| 2709 return _mkdir (pathout); | |
| 2710 #else | |
| 2711 return mkdir (pathout, mode); | |
| 2712 #endif | |
| 2713 } | |
| 2714 | |
| 428 | 2715 DIR * |
| 867 | 2716 qxe_opendir (const Ibyte *filename) |
| 428 | 2717 { |
| 771 | 2718 #ifdef WIN32_NATIVE |
| 2719 return mswindows_opendir (filename); | |
| 2720 #else | |
| 428 | 2721 DIR *rtnval; |
| 771 | 2722 Extbyte *pathout; |
| 2723 PATHNAME_CONVERT_OUT (filename, pathout); | |
| 2724 | |
| 2725 while (!(rtnval = opendir (pathout)) | |
| 428 | 2726 && (errno == EINTR)) |
| 2727 ; | |
| 2728 return rtnval; | |
| 771 | 2729 #endif /* WIN32_NATIVE */ |
| 428 | 2730 } |
| 771 | 2731 |
| 428 | 2732 DIRENTRY * |
| 771 | 2733 qxe_readdir (DIR *dirp) |
| 428 | 2734 { |
| 771 | 2735 #ifdef WIN32_NATIVE |
| 2736 return mswindows_readdir (dirp); | |
| 2737 #else /* not WIN32_NATIVE */ | |
| 428 | 2738 DIRENTRY *rtnval; |
| 2739 | |
| 2740 /* Apparently setting errno is necessary on some systems? | |
| 2741 Maybe readdir() doesn't always set errno ?! */ | |
| 2742 while (!(errno = 0, rtnval = readdir (dirp)) | |
| 2743 && (errno == EINTR)) | |
| 2744 ; | |
| 2745 #ifndef MULE | |
| 2746 return rtnval; | |
| 2747 #else /* MULE */ | |
| 2748 if (rtnval == NULL) /* End of directory */ | |
| 2749 return NULL; | |
| 2750 { | |
| 442 | 2751 const Extbyte * const external_name = (const Extbyte *) rtnval->d_name; |
| 665 | 2752 Bytecount external_len = strlen (rtnval->d_name); |
| 867 | 2753 const Ibyte *internal_name; |
| 462 | 2754 Bytecount internal_len; |
| 513 | 2755 |
| 462 | 2756 TO_INTERNAL_FORMAT (DATA, (external_name, external_len), |
| 2757 ALLOCA, (internal_name, internal_len), | |
| 2758 Qfile_name); | |
| 2759 | |
| 2760 /* check for common case of ASCII filename */ | |
| 2761 if (internal_len == external_len && | |
| 2762 !memcmp (external_name, internal_name, internal_len)) | |
| 428 | 2763 return rtnval; |
| 2764 | |
| 2765 { /* Non-ASCII filename */ | |
| 867 | 2766 static Ibyte_dynarr *internal_DIRENTRY; |
| 428 | 2767 if (!internal_DIRENTRY) |
| 867 | 2768 internal_DIRENTRY = Dynarr_new (Ibyte); |
| 428 | 2769 else |
| 2770 Dynarr_reset (internal_DIRENTRY); | |
| 2771 | |
| 867 | 2772 Dynarr_add_many (internal_DIRENTRY, (Ibyte *) rtnval, |
| 428 | 2773 offsetof (DIRENTRY, d_name)); |
| 2774 | |
| 2775 | |
| 2776 Dynarr_add_many (internal_DIRENTRY, internal_name, internal_len); | |
| 444 | 2777 Dynarr_add (internal_DIRENTRY, '\0'); /* NUL-terminate */ |
| 428 | 2778 return (DIRENTRY *) Dynarr_atp (internal_DIRENTRY, 0); |
| 2779 } | |
| 2780 } | |
| 2781 #endif /* MULE */ | |
| 771 | 2782 #endif /* WIN32_NATIVE */ |
| 428 | 2783 } |
| 771 | 2784 |
| 428 | 2785 int |
| 771 | 2786 qxe_closedir (DIR *dirp) |
| 428 | 2787 { |
| 771 | 2788 #ifdef WIN32_NATIVE |
| 2789 return mswindows_closedir (dirp); | |
| 2790 #else /* not WIN32_NATIVE */ | |
| 428 | 2791 int rtnval; |
| 2792 | |
| 2793 while ((rtnval = closedir (dirp)) == -1 | |
| 2794 && (errno == EINTR)) | |
| 2795 ; | |
| 2796 return rtnval; | |
| 771 | 2797 #endif /* WIN32_NATIVE */ |
| 428 | 2798 } |
| 771 | 2799 |
| 428 | 2800 int |
| 867 | 2801 qxe_rmdir (const Ibyte *path) |
| 771 | 2802 { |
| 2803 Extbyte *pathout; | |
| 2804 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2805 #ifdef WIN32_NATIVE | |
| 2806 if (XEUNICODE_P) | |
| 2807 return _wrmdir ((const wchar_t *) pathout); | |
| 2808 else | |
| 2809 return _rmdir (pathout); | |
| 2810 #else | |
| 2811 return rmdir (pathout); | |
| 2812 #endif | |
| 2813 } | |
| 2814 | |
| 867 | 2815 Ibyte * |
| 771 | 2816 qxe_allocating_getcwd (void) |
| 428 | 2817 { |
| 771 | 2818 #ifdef HAVE_GETCWD |
| 2819 Bytecount cwdsize = 1024; | |
| 2820 Extbyte *cwd = xnew_array (Extbyte, cwdsize); | |
| 2821 | |
| 2822 /* Many getcwd()'s can take a NULL argument and malloc() the right amount | |
| 2823 of data, but this is non-standard. */ | |
| 2824 while (1) | |
| 2825 { | |
| 2826 #ifdef WIN32_NATIVE | |
| 2827 Extbyte *ret; | |
| 2828 | |
| 2829 if (XEUNICODE_P) | |
| 2830 ret = (Extbyte *) _wgetcwd ((wchar_t *) cwd, | |
| 2831 cwdsize / sizeof (wchar_t)); | |
| 2832 else | |
| 2833 ret = _getcwd (cwd, cwdsize); | |
| 2834 | |
| 2835 if (ret) | |
| 2836 { | |
| 867 | 2837 Ibyte *retin; |
| 771 | 2838 TSTR_TO_C_STRING_MALLOC (ret, retin); |
| 1726 | 2839 xfree (cwd, Extbyte *); |
| 771 | 2840 return retin; |
| 2841 } | |
| 2842 #else | |
| 2843 Extbyte *ret = getcwd (cwd, cwdsize); | |
| 2844 if (ret) | |
| 2845 { | |
| 867 | 2846 Ibyte *retin; |
| 771 | 2847 EXTERNAL_TO_C_STRING_MALLOC (ret, retin, Qfile_name); |
| 1726 | 2848 xfree (cwd, Extbyte *); |
| 771 | 2849 return retin; |
| 2850 } | |
| 2851 #endif /* WIN32_NATIVE */ | |
| 2852 | |
| 2853 if (errno == ERANGE) | |
| 2854 { | |
| 2855 cwdsize *= 2; | |
| 2856 XREALLOC_ARRAY (cwd, Extbyte, cwdsize); | |
| 2857 } | |
| 2858 else | |
| 2859 { | |
| 1726 | 2860 xfree (cwd, Extbyte *); |
| 771 | 2861 return NULL; |
| 2862 } | |
| 2863 } | |
| 2864 #else | |
| 2421 | 2865 Extbyte chingame_limitos_arbitrarios[PATH_MAX_EXTERNAL]; |
| 867 | 2866 Ibyte *ret2; |
| 771 | 2867 |
| 2868 if (!getwd (chingame_limitos_arbitrarios)) | |
| 2869 return 0; | |
| 2870 EXTERNAL_TO_C_STRING_MALLOC (chingame_limitos_arbitrarios, ret2, Qfile_name); | |
| 2871 return ret2; | |
| 2872 #endif /* HAVE_GETCWD */ | |
| 428 | 2873 } |
| 2874 | |
| 2875 /***************** file-information calls ******************/ | |
| 2876 | |
| 2877 int | |
| 867 | 2878 qxe_access (const Ibyte *path, int mode) |
| 428 | 2879 { |
| 771 | 2880 #ifdef WIN32_NATIVE |
| 2881 return mswindows_access (path, mode); | |
| 2882 #else /* not WIN32_NATIVE */ | |
| 2883 Extbyte *pathout; | |
| 2884 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2885 return access (pathout, mode); | |
| 2886 #endif /* WIN32_NATIVE */ | |
| 428 | 2887 } |
| 771 | 2888 |
| 2889 #if defined (HAVE_EACCESS) | |
| 428 | 2890 int |
| 867 | 2891 qxe_eaccess (const Ibyte *path, int mode) |
| 428 | 2892 { |
| 771 | 2893 Extbyte *pathout; |
| 2894 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2895 return eaccess (pathout, mode); | |
| 428 | 2896 } |
| 771 | 2897 #endif /* defined (HAVE_EACCESS) */ |
| 2898 | |
| 428 | 2899 int |
| 867 | 2900 qxe_lstat (const Ibyte *path, struct stat *buf) |
| 428 | 2901 { |
| 771 | 2902 /* if system does not have symbolic links, it does not have lstat. |
| 2903 In that case, use ordinary stat instead. */ | |
| 2904 #ifndef S_IFLNK | |
| 2905 return qxe_stat (path, buf); | |
| 2526 | 2906 #elif defined (WIN32_NATIVE) |
| 2907 if (mswindows_shortcuts_are_symlinks) | |
| 2908 { | |
| 2909 /* We want to resolve the directory component and leave the rest | |
| 2910 alone. */ | |
| 2911 Ibyte *dirend = find_end_of_directory_component (path, qxestrlen (path)); | |
| 2912 Bytecount len; | |
| 2913 | |
| 2914 if (dirend != path) | |
| 2915 { | |
| 2916 Ibyte *resdir; | |
| 2917 Ichar lastch; | |
| 2918 DECLARE_EISTRING (resname); | |
| 2919 DECLARE_EISTRING (dir); | |
| 2920 | |
| 2921 eicpy_raw (dir, path, dirend - path); | |
| 2922 PATHNAME_RESOLVE_LINKS (eidata (dir), resdir); | |
| 2923 eicpy_rawz (resname, resdir); | |
| 2924 lastch = eigetch_char (resname, eicharlen (resname) - 1); | |
| 2925 if (!IS_DIRECTORY_SEP (lastch)) | |
| 2926 eicat_ch (resname, '\\'); | |
| 2927 eicat_rawz (resname, dirend); | |
| 2928 path = eidata (resname); | |
| 2929 } | |
| 2930 | |
| 2931 /* However, if what we are trying to stat is a link, we need to add | |
| 2932 the .LNK so that the actual file is statted. */ | |
| 2933 len = qxestrlen (path); | |
| 2934 if (len > 4 && qxestrcasecmp_ascii (path + len - 4, ".LNK")) | |
| 2935 { | |
| 2936 DECLARE_EISTRING (name2); | |
| 2937 Ibyte *resolved; | |
| 2938 | |
| 2939 eicpy_rawz (name2, path); | |
| 2940 eicat_ascii (name2, ".LNK"); | |
| 2941 resolved = mswindows_read_link (eidata (name2)); | |
| 2942 if (resolved) | |
| 2943 { | |
| 2944 xfree (resolved, Ibyte *); | |
| 2945 return mswindows_stat (eidata (name2), buf); | |
| 2946 } | |
| 2947 } | |
| 2948 } | |
| 2949 | |
| 2950 return mswindows_stat (path, buf); | |
| 771 | 2951 #else |
| 2952 Extbyte *pathout; | |
| 2953 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2954 return lstat (pathout, buf); | |
| 2955 #endif | |
| 428 | 2956 } |
| 771 | 2957 |
| 2958 #if defined (HAVE_READLINK) | |
| 428 | 2959 int |
| 867 | 2960 qxe_readlink (const Ibyte *path, Ibyte *buf, size_t bufsiz) |
| 428 | 2961 { |
| 771 | 2962 int retval; |
| 2963 Extbyte *pathout; | |
| 2964 | |
| 2965 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2966 retval = readlink (pathout, (char *) buf, bufsiz); | |
| 2967 if (retval < 0) | |
| 2968 return retval; | |
| 2969 { | |
| 867 | 2970 Ibyte *intbuf; |
| 771 | 2971 Bytecount tamanho; |
| 2972 | |
| 2973 TO_INTERNAL_FORMAT (DATA, (buf, retval), | |
| 2974 ALLOCA, (intbuf, tamanho), Qfile_name); | |
| 2975 /* the man page says this function does not null-terminate */ | |
| 2976 if (tamanho >= (Bytecount) bufsiz) | |
| 2977 tamanho = bufsiz; | |
| 2978 memcpy (buf, intbuf, tamanho); | |
| 2979 return tamanho; | |
| 2980 } | |
| 428 | 2981 } |
| 771 | 2982 #endif /* defined (HAVE_READLINK) */ |
| 2983 | |
| 432 | 2984 int |
| 771 | 2985 qxe_fstat (int fd, struct stat *buf) |
| 432 | 2986 { |
| 442 | 2987 #ifdef WIN32_NATIVE |
| 2988 return mswindows_fstat (fd, buf); | |
| 2989 #else | |
| 432 | 2990 return fstat (fd, buf); |
| 771 | 2991 #endif /* WIN32_NATIVE */ |
| 432 | 2992 } |
| 2993 | |
| 428 | 2994 int |
| 867 | 2995 qxe_stat (const Ibyte *path, struct stat *buf) |
| 428 | 2996 { |
| 442 | 2997 #ifdef WIN32_NATIVE |
| 2526 | 2998 Ibyte *resolved; |
| 2999 PATHNAME_RESOLVE_LINKS (path, resolved); | |
| 3000 return mswindows_stat (resolved, buf); | |
| 771 | 3001 #else /* not WIN32_NATIVE */ |
| 3002 Extbyte *pathout; | |
| 3003 PATHNAME_CONVERT_OUT (path, pathout); | |
| 3004 return stat (pathout, buf); | |
| 3005 #endif /* WIN32_NATIVE */ | |
| 428 | 3006 } |
| 3007 | |
| 771 | 3008 |
| 428 | 3009 /****************** file-manipulation calls *****************/ |
| 3010 | |
| 3011 int | |
| 867 | 3012 qxe_chmod (const Ibyte *path, mode_t mode) |
| 428 | 3013 { |
| 771 | 3014 Extbyte *pathout; |
| 3015 PATHNAME_CONVERT_OUT (path, pathout); | |
| 3016 #ifdef WIN32_NATIVE | |
| 3017 if (XEUNICODE_P) | |
| 3018 return _wchmod ((const wchar_t *) pathout, mode); | |
| 3019 else | |
| 3020 return _chmod (pathout, mode); | |
| 3021 #else | |
| 3022 return chmod (pathout, mode); | |
| 3023 #endif | |
| 428 | 3024 } |
| 771 | 3025 |
| 3026 #if defined (HAVE_LINK) | |
| 428 | 3027 int |
| 2957 | 3028 qxe_link (const Ibyte *existing, const Ibyte *new_) |
| 428 | 3029 { |
| 771 | 3030 #ifdef WIN32_NATIVE |
| 2957 | 3031 return mswindows_link (existing, new_); |
| 771 | 3032 #else /* not WIN32_NATIVE */ |
| 3033 Extbyte *existingout, *newout; | |
| 3034 PATHNAME_CONVERT_OUT (existing, existingout); | |
| 2957 | 3035 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 3036 return link (existingout, newout); |
| 3037 #endif /* WIN32_NATIVE */ | |
| 428 | 3038 } |
| 771 | 3039 #endif /* defined (HAVE_LINK) */ |
| 3040 | |
| 428 | 3041 int |
| 2957 | 3042 qxe_rename (const Ibyte *old, const Ibyte *new_) |
| 428 | 3043 { |
| 442 | 3044 #ifdef WIN32_NATIVE |
| 2957 | 3045 return mswindows_rename (old, new_); |
| 771 | 3046 #else /* not WIN32_NATIVE */ |
| 3047 Extbyte *oldout, *newout; | |
| 3048 PATHNAME_CONVERT_OUT (old, oldout); | |
| 2957 | 3049 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 3050 return rename (oldout, newout); |
| 442 | 3051 #endif /* WIN32_NATIVE */ |
| 428 | 3052 } |
| 771 | 3053 |
| 3054 #if defined (HAVE_SYMLINK) | |
| 428 | 3055 int |
| 867 | 3056 qxe_symlink (const Ibyte *name1, const Ibyte *name2) |
| 428 | 3057 { |
| 771 | 3058 Extbyte *name1out, *name2out; |
| 3059 PATHNAME_CONVERT_OUT (name1, name1out); | |
| 3060 PATHNAME_CONVERT_OUT (name2, name2out); | |
| 3061 return symlink (name1out, name2out); | |
| 428 | 3062 } |
| 771 | 3063 #endif /* defined (HAVE_SYMLINK) */ |
| 3064 | |
| 428 | 3065 int |
| 867 | 3066 qxe_unlink (const Ibyte *path) |
| 428 | 3067 { |
| 771 | 3068 #ifdef WIN32_NATIVE |
| 3069 return mswindows_unlink (path); | |
| 3070 #else /* not WIN32_NATIVE */ | |
| 3071 Extbyte *pathout; | |
| 3072 PATHNAME_CONVERT_OUT (path, pathout); | |
| 3073 return unlink (pathout); | |
| 3074 #endif /* WIN32_NATIVE */ | |
| 428 | 3075 } |
| 771 | 3076 |
| 3077 | |
| 3078 /****************** process calls *****************/ | |
| 3079 | |
| 428 | 3080 int |
| 867 | 3081 qxe_execve (const Ibyte *filename, Ibyte * const argv[], |
| 3082 Ibyte * const envp[]) | |
| 428 | 3083 { |
| 771 | 3084 int i, argc, envc; |
| 3085 Extbyte *pathext; | |
| 3086 Extbyte **new_argv; | |
| 3087 Extbyte **new_envp; | |
| 3088 | |
| 3089 PATHNAME_CONVERT_OUT (filename, pathext); | |
| 3090 | |
| 428 | 3091 for (argc = 0; argv[argc]; argc++) |
| 3092 ; | |
| 771 | 3093 new_argv = alloca_array (Extbyte *, argc + 1); |
| 428 | 3094 for (i = 0; i < argc; i++) |
| 771 | 3095 C_STRING_TO_EXTERNAL (argv[i], new_argv[i], Qnative); |
| 428 | 3096 new_argv[argc] = NULL; |
| 771 | 3097 |
| 3098 for (envc = 0; envp[envc]; envc++) | |
| 3099 ; | |
| 3100 new_envp = alloca_array (Extbyte *, envc + 1); | |
| 3101 for (i = 0; i < envc; i++) | |
| 3102 C_STRING_TO_EXTERNAL (envp[i], new_envp[i], Qnative); | |
| 3103 new_envp[envc] = NULL; | |
| 3104 | |
| 1318 | 3105 #if defined (WIN32_NATIVE) |
| 3106 if (XEUNICODE_P) | |
| 3107 return _wexecve ((const wchar_t *) pathext, | |
| 3108 (const wchar_t * const *) new_argv, | |
| 3109 (const wchar_t * const *) new_envp); | |
| 3110 #endif | |
| 771 | 3111 return execve (pathext, new_argv, new_envp); |
| 3112 } | |
| 3113 | |
| 3114 pid_t | |
| 3115 qxe_getpid (void) | |
| 3116 { | |
| 3117 #ifdef WIN32_NATIVE | |
| 3118 return abs (getpid ()); | |
| 3119 #else | |
| 3120 return getpid (); | |
| 3121 #endif | |
| 428 | 3122 } |
| 771 | 3123 |
| 3124 | |
| 3125 /****************** passwd calls *****************/ | |
| 3126 | |
| 3127 struct passwd cached_pwd; | |
| 3128 | |
| 3129 static struct passwd * | |
| 3130 copy_in_passwd (struct passwd *pwd) | |
| 3131 { | |
| 3132 if (!pwd) | |
| 3133 return NULL; | |
| 3134 | |
| 3135 if (cached_pwd.pw_name) | |
| 1726 | 3136 xfree (cached_pwd.pw_name, char *); |
| 771 | 3137 if (cached_pwd.pw_passwd) |
| 1726 | 3138 xfree (cached_pwd.pw_passwd, char *); |
| 771 | 3139 if (cached_pwd.pw_gecos) |
| 1726 | 3140 xfree (cached_pwd.pw_gecos, char *); |
| 771 | 3141 if (cached_pwd.pw_dir) |
| 1726 | 3142 xfree (cached_pwd.pw_dir, char *); |
| 771 | 3143 if (cached_pwd.pw_shell) |
| 1726 | 3144 xfree (cached_pwd.pw_shell, char *); |
| 771 | 3145 |
| 3146 cached_pwd = *pwd; | |
| 3147 if (cached_pwd.pw_name) | |
| 3148 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_name, | |
| 3149 C_STRING_MALLOC, cached_pwd.pw_name, Qnative); | |
| 3150 if (cached_pwd.pw_passwd) | |
| 3151 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_passwd, | |
| 3152 C_STRING_MALLOC, cached_pwd.pw_passwd, Qnative); | |
| 3153 if (cached_pwd.pw_gecos) | |
| 3154 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_gecos, | |
| 3155 C_STRING_MALLOC, cached_pwd.pw_gecos, Qnative); | |
| 3156 if (cached_pwd.pw_dir) | |
| 3157 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_dir, | |
| 3158 C_STRING_MALLOC, cached_pwd.pw_dir, Qfile_name); | |
| 3159 if (cached_pwd.pw_shell) | |
| 3160 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_shell, | |
| 3161 C_STRING_MALLOC, cached_pwd.pw_shell, Qfile_name); | |
| 3162 return &cached_pwd; | |
| 3163 } | |
| 3164 | |
| 3165 struct passwd * | |
| 867 | 3166 qxe_getpwnam (const Ibyte *name) |
| 771 | 3167 { |
| 3168 #ifdef WIN32_NATIVE | |
| 3169 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3170 return getpwnam (name); | |
| 3171 #else | |
| 3172 Extbyte *nameext; | |
| 3173 C_STRING_TO_EXTERNAL (name, nameext, Qnative); | |
| 3174 | |
| 3175 return copy_in_passwd (getpwnam (nameext)); | |
| 3176 #endif /* WIN32_NATIVE */ | |
| 3177 } | |
| 3178 | |
| 3179 struct passwd * | |
| 3180 qxe_getpwuid (uid_t uid) | |
| 3181 { | |
| 3182 #ifdef WIN32_NATIVE | |
| 3183 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3184 return getpwuid (uid); | |
| 3185 #else | |
| 3186 return copy_in_passwd (getpwuid (uid)); | |
| 3187 #endif /* WIN32_NATIVE */ | |
| 3188 } | |
| 3189 | |
| 3190 #ifndef WIN32_NATIVE | |
| 3191 | |
| 3192 struct passwd * | |
| 3193 qxe_getpwent (void) | |
| 3194 { | |
| 3195 /* No WIN32_NATIVE version of this. */ | |
| 3196 return copy_in_passwd (getpwent ()); | |
| 3197 } | |
| 3198 | |
| 3199 #endif /* not WIN32_NATIVE */ | |
| 3200 | |
| 3201 /****************** time calls *****************/ | |
| 3202 | |
| 867 | 3203 static Ibyte *ctime_static; |
| 3204 | |
| 3205 Ibyte * | |
| 771 | 3206 qxe_ctime (const time_t *t) |
| 3207 { | |
| 3208 Extbyte *str = (Extbyte *) ctime (t); | |
| 3209 if (!str) /* can happen on MS Windows */ | |
| 867 | 3210 return (Ibyte *) "Sun Jan 01 00:00:00 1970"; |
| 771 | 3211 if (ctime_static) |
| 1726 | 3212 xfree (ctime_static, Ibyte *); |
| 771 | 3213 EXTERNAL_TO_C_STRING_MALLOC (str, ctime_static, Qnative); |
| 3214 return ctime_static; | |
| 3215 } | |
| 428 | 3216 |
| 1204 | 3217 |
| 912 | 3218 /************************************************************************/ |
| 3219 /* Emulation of missing functions from wchar.h */ | |
| 3220 /************************************************************************/ | |
| 3221 | |
| 3222 #ifndef HAVE_WCHAR_H | |
| 3223 size_t | |
| 2367 | 3224 wcslen (const wchar_t *s) |
| 912 | 3225 { |
| 3700 | 3226 const wchar_t *p = s; |
| 3648 | 3227 if (s == NULL) return NULL; |
| 912 | 3228 |
| 3229 while (*p++) | |
| 3230 ; | |
| 3231 | |
| 3232 return p - s; | |
| 3233 } | |
| 3234 #endif | |
| 1204 | 3235 |
| 3236 /************************************************************************/ | |
| 3237 /* Emulation of missing functions from string.h */ | |
| 3238 /************************************************************************/ | |
| 3239 | |
| 3240 #ifndef HAVE_STRLWR | |
| 3241 char * | |
| 3242 strlwr (char *s) | |
| 3243 { | |
| 3700 | 3244 REGISTER char *c; |
| 3648 | 3245 if (s == NULL) return NULL; |
| 1271 | 3246 |
| 3247 for (c = s; *c; c++) | |
| 1204 | 3248 { |
| 1271 | 3249 *c = tolower (*c); |
| 1204 | 3250 } |
| 1271 | 3251 return s; |
| 1204 | 3252 } |
| 3253 #endif | |
| 3254 | |
| 1271 | 3255 #ifndef HAVE_STRUPR |
| 1204 | 3256 char * |
| 3257 strupr (char *s) | |
| 3258 { | |
| 1271 | 3259 REGISTER char *c; |
| 3260 | |
| 3261 for (c = s; *c; c++) | |
| 1204 | 3262 { |
| 1271 | 3263 *c = toupper (*c); |
| 1204 | 3264 } |
| 1271 | 3265 return s; |
| 1204 | 3266 } |
| 3267 #endif | |
| 912 | 3268 |
| 428 | 3269 |
| 3270 /************************************************************************/ | |
| 3271 /* Emulations of missing system calls */ | |
| 3272 /************************************************************************/ | |
| 3273 | |
| 3274 /***** (these are primarily required for USG, it seems) *****/ | |
| 3275 | |
| 3276 /* | |
| 3277 * Emulate rename using unlink/link. Note that this is | |
| 3278 * only partially correct. Also, doesn't enforce restriction | |
| 3279 * that files be of same type (regular->regular, dir->dir, etc). | |
| 3280 */ | |
| 3281 | |
| 3282 #ifndef HAVE_RENAME | |
| 3283 int | |
| 771 | 3284 rename (const Extbyte *from, const Extbyte *to) |
| 428 | 3285 { |
| 3286 if (access (from, 0) == 0) | |
| 3287 { | |
| 3288 unlink (to); | |
| 3289 if (link (from, to) == 0) | |
| 3290 if (unlink (from) == 0) | |
| 3291 return (0); | |
| 3292 } | |
| 3293 return (-1); | |
| 3294 } | |
| 3295 #endif /* HAVE_RENAME */ | |
| 3296 | |
| 3297 #ifdef HPUX | |
| 3298 #ifndef HAVE_PERROR | |
| 3299 | |
| 3300 /* HPUX curses library references perror, but as far as we know | |
| 3301 it won't be called. Anyway this definition will do for now. */ | |
| 3302 | |
| 3303 perror (void) | |
| 3304 { | |
| 3305 } | |
| 3306 | |
| 3307 #endif /* not HAVE_PERROR */ | |
| 3308 #endif /* HPUX */ | |
| 3309 | |
| 3310 #ifndef HAVE_DUP2 | |
| 3311 | |
| 3312 /* | |
| 3313 * Emulate BSD dup2. First close newd if it already exists. | |
| 3314 * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
| 3315 * until we are, then close the unsuccessful ones. | |
| 3316 */ | |
| 3317 | |
| 3318 int | |
| 3319 dup2 (int oldd, int newd) | |
| 3320 { | |
| 3321 int fd, ret; | |
| 3322 | |
| 771 | 3323 retry_close (newd); |
| 428 | 3324 |
| 3325 #ifdef F_DUPFD | |
| 3326 fd = fcntl (oldd, F_DUPFD, newd); | |
| 3327 if (fd != newd) | |
| 563 | 3328 signal_ferror_with_frob (Qfile_error, lisp_strerror (errno), |
| 3329 "can't dup2 (%i, %i)", oldd, newd); | |
| 428 | 3330 #else |
| 2957 | 3331 fd = dup (oldd); |
| 428 | 3332 if (fd == -1) |
| 3333 return -1; | |
| 2957 | 3334 if (fd == newd) |
| 3335 return newd; | |
| 3336 ret = dup2 (oldd, newd); | |
| 771 | 3337 retry_close (fd); |
| 428 | 3338 return ret; |
| 3339 #endif /* F_DUPFD */ | |
| 3340 } | |
| 3341 | |
| 3342 #endif /* not HAVE_DUP2 */ | |
| 3343 | |
| 3344 /* | |
| 3345 * Gettimeofday. Simulate as much as possible. Only accurate | |
| 3346 * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
| 3347 */ | |
| 3348 | |
| 3349 #if !defined (HAVE_GETTIMEOFDAY) | |
| 3350 | |
| 3351 int | |
| 3352 gettimeofday (struct timeval *tp, struct timezone *tzp) | |
| 3353 { | |
| 3354 extern long time (); | |
| 3355 | |
| 3356 tp->tv_sec = time ((long *)0); | |
| 3357 tp->tv_usec = 0; | |
| 3358 if (tzp != 0) | |
| 3359 tzp->tz_minuteswest = -1; | |
| 3360 return (0); | |
| 3361 } | |
| 3362 | |
| 3363 #endif /* !HAVE_GETTIMEOFDAY */ | |
| 3364 | |
| 3365 /* No need to encapsulate utime and utimes explicitly because all | |
| 3366 access to those functions goes through the following. */ | |
| 3367 | |
| 3368 int | |
| 2340 | 3369 set_file_times ( |
| 3370 #if defined (WIN32_NATIVE) || defined (HAVE_UTIME) || defined (HAVE_UTIMES) | |
| 3371 Lisp_Object path, EMACS_TIME atime, EMACS_TIME mtime | |
| 3372 #else | |
| 3373 Lisp_Object UNUSED (path), EMACS_TIME UNUSED (atime), | |
| 3374 EMACS_TIME UNUSED (mtime) | |
| 3375 #endif | |
| 3376 ) | |
| 428 | 3377 { |
| 592 | 3378 #if defined (WIN32_NATIVE) |
| 460 | 3379 struct utimbuf utb; |
| 3380 utb.actime = EMACS_SECS (atime); | |
| 3381 utb.modtime = EMACS_SECS (mtime); | |
| 592 | 3382 return mswindows_utime (path, &utb); |
| 3383 #elif defined (HAVE_UTIME) | |
| 3384 struct utimbuf utb; | |
| 3385 Extbyte *filename; | |
| 3386 utb.actime = EMACS_SECS (atime); | |
| 3387 utb.modtime = EMACS_SECS (mtime); | |
| 3388 LISP_STRING_TO_EXTERNAL (path, filename, Qfile_name); | |
| 460 | 3389 return utime (filename, &utb); |
| 3390 #elif defined (HAVE_UTIMES) | |
| 428 | 3391 struct timeval tv[2]; |
| 592 | 3392 Extbyte *filename; |
| 428 | 3393 tv[0] = atime; |
| 3394 tv[1] = mtime; | |
| 592 | 3395 LISP_STRING_TO_EXTERNAL (path, filename, Qfile_name); |
| 428 | 3396 return utimes (filename, tv); |
| 460 | 3397 #else |
| 3398 /* No file times setting function available. */ | |
| 3399 return -1; | |
| 3400 #endif | |
| 428 | 3401 } |
| 3402 | |
| 3403 /* */ | |
| 3404 | |
| 3405 static long ticks_per_second; | |
| 3406 static long orig_user_ticks, orig_system_ticks; | |
| 3407 EMACS_TIME orig_real_time; | |
| 3408 | |
| 3409 static int process_times_available; | |
| 3410 | |
| 3411 /* Return the relative user and system tick count. We try to | |
| 3412 maintain calculations in terms of integers as long as possible | |
| 3413 for increased accuracy. */ | |
| 3414 | |
| 3415 static int | |
| 2340 | 3416 get_process_times_1 ( |
| 3417 #if defined (CLOCKS_PER_SEC) || defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) | |
| 3418 long *user_ticks, long *system_ticks | |
| 3419 #else | |
| 3420 long *UNUSED (user_ticks), long *UNUSED (system_ticks) | |
| 3421 #endif | |
| 3422 ) | |
| 428 | 3423 { |
| 442 | 3424 #if defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) |
| 428 | 3425 /* We have the POSIX times() function available. */ |
| 777 | 3426 /* #### Perhaps we should just use a configure test for times()? */ |
| 428 | 3427 struct tms tttt; |
| 3428 times (&tttt); | |
| 3429 *user_ticks = (long) tttt.tms_utime; | |
| 3430 *system_ticks = (long) tttt.tms_stime; | |
| 3431 return 1; | |
| 3432 #elif defined (CLOCKS_PER_SEC) | |
| 3433 *user_ticks = (long) clock (); | |
| 3434 *system_ticks = 0; | |
| 3435 return 1; | |
| 3436 #else | |
| 3437 return 0; | |
| 3438 #endif | |
| 3439 } | |
| 3440 | |
| 3441 void | |
| 3442 init_process_times_very_early (void) | |
| 3443 { | |
| 3444 #if defined (_SC_CLK_TCK) | |
| 3445 ticks_per_second = sysconf (_SC_CLK_TCK); | |
| 3446 #elif defined (CLK_TCK) | |
| 3447 ticks_per_second = CLK_TCK; | |
| 3448 #elif defined (CLOCKS_PER_SEC) | |
| 3449 ticks_per_second = CLOCKS_PER_SEC; | |
| 3450 #endif | |
| 3451 | |
| 3452 process_times_available = get_process_times_1 (&orig_user_ticks, | |
| 3453 &orig_system_ticks); | |
| 3454 EMACS_GET_TIME (orig_real_time); | |
| 3455 } | |
| 3456 | |
| 3457 /* Return the user and system times used up by this process so far. */ | |
| 3458 void | |
| 3459 get_process_times (double *user_time, double *system_time, double *real_time) | |
| 3460 { | |
| 3461 EMACS_TIME curr_real_time; | |
| 3462 EMACS_TIME elapsed_time; | |
| 3463 long curr_user_ticks, curr_system_ticks; | |
| 3464 | |
| 3465 EMACS_GET_TIME (curr_real_time); | |
| 3466 EMACS_SUB_TIME (elapsed_time, curr_real_time, orig_real_time); | |
| 3467 *real_time = (EMACS_SECS (elapsed_time) | |
| 3468 + ((double) EMACS_USECS (elapsed_time)) / 1000000); | |
| 3469 if (get_process_times_1 (&curr_user_ticks, &curr_system_ticks)) | |
| 3470 { | |
| 3471 *user_time = (((double) (curr_user_ticks - orig_user_ticks)) | |
| 3472 / ticks_per_second); | |
| 3473 *system_time = (((double) (curr_system_ticks - orig_system_ticks)) | |
| 3474 / ticks_per_second); | |
| 3475 } | |
| 3476 else | |
| 3477 { | |
| 3478 /* A lame OS */ | |
| 3479 *user_time = *real_time; | |
| 3480 *system_time = 0; | |
| 3481 } | |
| 3482 } | |
| 3483 | |
| 3484 #ifndef HAVE_RANDOM | |
| 3485 #ifdef random | |
| 3486 #define HAVE_RANDOM | |
| 3487 #endif | |
| 3488 #endif | |
| 3489 | |
| 3490 /* Figure out how many bits the system's random number generator uses. | |
| 3491 `random' and `lrand48' are assumed to return 31 usable bits. | |
| 3492 BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
| 3493 so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
| 3494 | |
| 3495 #ifndef RAND_BITS | |
| 3496 # ifdef HAVE_RANDOM | |
| 3497 # define RAND_BITS 31 | |
| 3498 # else /* !HAVE_RANDOM */ | |
| 3499 # ifdef HAVE_LRAND48 | |
| 3500 # define RAND_BITS 31 | |
| 3501 # define random lrand48 | |
| 3502 # else /* !HAVE_LRAND48 */ | |
| 3503 # define RAND_BITS 15 | |
| 3504 # if RAND_MAX == 32767 | |
| 3505 # define random rand | |
| 3506 # else /* RAND_MAX != 32767 */ | |
| 3507 # if RAND_MAX == 2147483647 | |
| 3508 # define random() (rand () >> 16) | |
| 3509 # else /* RAND_MAX != 2147483647 */ | |
| 3510 # ifdef USG | |
| 3511 # define random rand | |
| 3512 # else | |
| 3513 # define random() (rand () >> 16) | |
| 3514 # endif /* !BSD */ | |
| 3515 # endif /* RAND_MAX != 2147483647 */ | |
| 3516 # endif /* RAND_MAX != 32767 */ | |
| 3517 # endif /* !HAVE_LRAND48 */ | |
| 3518 # endif /* !HAVE_RANDOM */ | |
| 3519 #endif /* !RAND_BITS */ | |
| 3520 | |
| 3521 void | |
| 3522 seed_random (long arg) | |
| 3523 { | |
| 3524 #ifdef HAVE_RANDOM | |
| 3525 srandom ((unsigned int)arg); | |
| 3526 #else | |
| 3527 # ifdef HAVE_LRAND48 | |
| 3528 srand48 (arg); | |
| 3529 # else | |
| 3530 srand ((unsigned int)arg); | |
| 3531 # endif | |
| 3532 #endif | |
| 1983 | 3533 #ifdef HAVE_BIGNUM |
| 3534 bignum_random_seed ((unsigned long) arg); | |
| 3535 #endif | |
| 428 | 3536 } |
| 3537 | |
| 3538 /* | |
| 3539 * Build a full Emacs-sized word out of whatever we've got. | |
| 3540 * This suffices even for a 64-bit architecture with a 15-bit rand. | |
| 3541 */ | |
| 3542 long | |
| 3543 get_random (void) | |
| 3544 { | |
| 3545 long val = random (); | |
| 2039 | 3546 #if INT_VALBITS > RAND_BITS |
| 428 | 3547 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3548 #if INT_VALBITS > 2*RAND_BITS |
| 428 | 3549 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3550 #if INT_VALBITS > 3*RAND_BITS |
| 428 | 3551 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3552 #if INT_VALBITS > 4*RAND_BITS |
| 428 | 3553 val = (val << RAND_BITS) ^ random (); |
| 3554 #endif /* need at least 5 */ | |
| 3555 #endif /* need at least 4 */ | |
| 3556 #endif /* need at least 3 */ | |
| 3557 #endif /* need at least 2 */ | |
| 2039 | 3558 return val & (EMACS_INT) ((1UL << INT_VALBITS) - 1); |
| 428 | 3559 } |
| 3560 | |
| 3561 | |
| 3562 /************************************************************************/ | |
| 3563 /* Strings corresponding to defined signals */ | |
| 3564 /************************************************************************/ | |
| 3565 | |
| 2762 | 3566 #if (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) |
| 428 | 3567 |
| 442 | 3568 #if defined(WIN32_NATIVE) || defined(CYGWIN) |
| 3569 const char *sys_siglist[] = | |
| 428 | 3570 { |
| 771 | 3571 /* $$####begin-snarf */ |
| 428 | 3572 "bum signal!!", |
| 3573 "hangup", | |
| 3574 "interrupt", | |
| 3575 "quit", | |
| 3576 "illegal instruction", | |
| 3577 "trace trap", | |
| 3578 "iot instruction", | |
| 3579 "emt instruction", | |
| 3580 "floating point exception", | |
| 3581 "kill", | |
| 3582 "bus error", | |
| 3583 "segmentation violation", | |
| 3584 "bad argument to system call", | |
| 3585 "write on a pipe with no one to read it", | |
| 3586 "alarm clock", | |
| 3587 "software termination signal from kill", | |
| 3588 "status signal", | |
| 3589 "sendable stop signal not from tty", | |
| 3590 "stop signal from tty", | |
| 3591 "continue a stopped process", | |
| 3592 "child status has changed", | |
| 3593 "background read attempted from control tty", | |
| 3594 "background write attempted from control tty", | |
| 3595 "input record available at control tty", | |
| 3596 "exceeded CPU time limit", | |
| 3597 "exceeded file size limit" | |
| 771 | 3598 /* $$####end-snarf */ |
| 428 | 3599 }; |
| 3600 #endif | |
| 3601 | |
| 3602 #ifdef USG | |
| 3603 #ifdef AIX | |
| 442 | 3604 const char *sys_siglist[NSIG + 1] = |
| 428 | 3605 { |
| 3606 /* AIX has changed the signals a bit */ | |
| 863 | 3607 DEFER_GETTEXT ("bogus signal"), /* 0 */ |
| 3608 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */ | |
| 3609 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */ | |
| 3610 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */ | |
| 3611 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */ | |
| 3612 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */ | |
| 3613 DEFER_GETTEXT ("IOT instruction"), /* 6 SIGIOT */ | |
| 3614 DEFER_GETTEXT ("crash likely"), /* 7 SIGDANGER */ | |
| 3615 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */ | |
| 3616 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */ | |
| 3617 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */ | |
| 3618 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */ | |
| 3619 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */ | |
| 3620 DEFER_GETTEXT ("write on a pipe with no one to read it"), /* 13 SIGPIPE */ | |
| 3621 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */ | |
| 3622 DEFER_GETTEXT ("software termination signal"), /* 15 SIGTERM */ | |
| 3623 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */ | |
| 3624 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */ | |
| 3625 DEFER_GETTEXT ("death of a child"), /* 18 SIGCLD */ | |
| 3626 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */ | |
| 3627 DEFER_GETTEXT ("bogus signal"), /* 20 */ | |
| 3628 DEFER_GETTEXT ("bogus signal"), /* 21 */ | |
| 3629 DEFER_GETTEXT ("bogus signal"), /* 22 */ | |
| 3630 DEFER_GETTEXT ("bogus signal"), /* 23 */ | |
| 3631 DEFER_GETTEXT ("bogus signal"), /* 24 */ | |
| 3632 DEFER_GETTEXT ("LAN I/O interrupt"), /* 25 SIGAIO */ | |
| 3633 DEFER_GETTEXT ("PTY I/O interrupt"), /* 26 SIGPTY */ | |
| 3634 DEFER_GETTEXT ("I/O intervention required"), /* 27 SIGIOINT */ | |
| 771 | 3635 /* $$####end-snarf */ |
| 428 | 3636 0 |
| 3637 }; | |
| 3638 #else /* USG, not AIX */ | |
| 442 | 3639 const char *sys_siglist[NSIG + 1] = |
| 428 | 3640 { |
| 863 | 3641 DEFER_GETTEXT ("bogus signal"), /* 0 */ |
| 3642 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */ | |
| 3643 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */ | |
| 3644 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */ | |
| 3645 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */ | |
| 3646 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */ | |
| 3647 DEFER_GETTEXT ("IOT instruction"), /* 6 SIGIOT */ | |
| 3648 DEFER_GETTEXT ("EMT instruction"), /* 7 SIGEMT */ | |
| 3649 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */ | |
| 3650 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */ | |
| 3651 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */ | |
| 3652 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */ | |
| 3653 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */ | |
| 3654 DEFER_GETTEXT ("write on a pipe with no one to read it"), /* 13 SIGPIPE */ | |
| 3655 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */ | |
| 3656 DEFER_GETTEXT ("software termination signal"), /* 15 SIGTERM */ | |
| 3657 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */ | |
| 3658 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */ | |
| 3659 DEFER_GETTEXT ("death of a child"), /* 18 SIGCLD */ | |
| 3660 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */ | |
| 428 | 3661 #ifdef sun |
| 771 | 3662 "window size changed", /* 20 SIGWINCH */ |
| 3663 "urgent socket condition", /* 21 SIGURG */ | |
| 3664 "pollable event occurred", /* 22 SIGPOLL */ | |
| 3665 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ | |
| 3666 "user stop requested from tty", /* 24 SIGTSTP */ | |
| 3667 "stopped process has been continued", /* 25 SIGCONT */ | |
| 3668 "background tty read attempted", /* 26 SIGTTIN */ | |
| 3669 "background tty write attempted", /* 27 SIGTTOU */ | |
| 3670 "virtual timer expired", /* 28 SIGVTALRM */ | |
| 3671 "profiling timer expired", /* 29 SIGPROF */ | |
| 3672 "exceeded cpu limit", /* 30 SIGXCPU */ | |
| 3673 "exceeded file size limit", /* 31 SIGXFSZ */ | |
| 3674 "process's lwps are blocked", /* 32 SIGWAITING */ | |
| 3675 "special signal used by thread library", /* 33 SIGLWP */ | |
| 428 | 3676 #ifdef SIGFREEZE |
| 771 | 3677 "special signal used by CPR", /* 34 SIGFREEZE */ |
| 428 | 3678 #endif |
| 3679 #ifdef SIGTHAW | |
| 771 | 3680 "special signal used by CPR", /* 35 SIGTHAW */ |
| 428 | 3681 #endif |
| 3682 #endif /* sun */ | |
| 771 | 3683 /* $$####end-snarf */ |
| 428 | 3684 0 |
| 3685 }; | |
| 3686 #endif /* not AIX */ | |
| 3687 #endif /* USG */ | |
| 3688 | |
| 2762 | 3689 #endif /* (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) */ |
| 428 | 3690 |
| 3691 | |
| 3692 /************************************************************************/ | |
| 3693 /* Directory routines for systems that don't have them */ | |
| 3694 /************************************************************************/ | |
| 3695 | |
| 3696 #ifdef SYSV_SYSTEM_DIR | |
| 3697 | |
| 3698 #include <dirent.h> | |
| 3699 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3700 #if !defined(HAVE_CLOSEDIR) |
| 428 | 3701 int |
| 3702 closedir (DIR *dirp) /* stream from opendir */ | |
| 3703 { | |
| 3704 int rtnval; | |
| 3705 | |
| 771 | 3706 rtnval = retry_close (dirp->dd_fd); |
| 428 | 3707 |
| 3708 /* Some systems (like Solaris) allocate the buffer and the DIR all | |
| 3709 in one block. Why in the world are we freeing this ourselves | |
| 3710 anyway? */ | |
| 3711 #if ! (defined (sun) && defined (USG5_4)) | |
| 1726 | 3712 xfree (dirp->dd_buf, char *); /* directory block defined in <dirent.h> */ |
| 428 | 3713 #endif |
| 1726 | 3714 xfree (dirp, DIR *); |
| 428 | 3715 return (rtnval); |
| 3716 } | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3717 #endif /* not HAVE_CLOSEDIR */ |
| 428 | 3718 #endif /* SYSV_SYSTEM_DIR */ |
| 3719 | |
| 3720 #ifdef NONSYSTEM_DIR_LIBRARY | |
| 3721 | |
| 3722 DIR * | |
| 442 | 3723 opendir (const char *filename) /* name of directory */ |
| 428 | 3724 { |
| 3725 DIR *dirp; /* -> malloc'ed storage */ | |
| 3726 int fd; /* file descriptor for read */ | |
| 3727 struct stat sbuf; /* result of fstat */ | |
| 3728 | |
| 771 | 3729 fd = open (filename, O_RDONLY); |
| 428 | 3730 if (fd < 0) |
| 3731 return 0; | |
| 3732 | |
| 3733 if (fstat (fd, &sbuf) < 0 | |
| 3734 || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
| 3735 || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
| 3736 { | |
| 771 | 3737 retry_close (fd); |
| 428 | 3738 return 0; /* bad luck today */ |
| 3739 } | |
| 3740 | |
| 3741 dirp->dd_fd = fd; | |
| 3742 dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
| 3743 | |
| 3744 return dirp; | |
| 3745 } | |
| 3746 | |
| 3747 void | |
| 3748 closedir (DIR *dirp) /* stream from opendir */ | |
| 3749 { | |
| 771 | 3750 retry_close (dirp->dd_fd); |
| 1726 | 3751 xfree (dirp, DIR *); |
| 428 | 3752 } |
| 3753 | |
| 3754 | |
| 3755 #define DIRSIZ 14 | |
| 3756 struct olddir | |
| 3757 { | |
| 3758 ino_t od_ino; /* inode */ | |
| 3759 char od_name[DIRSIZ]; /* filename */ | |
| 3760 }; | |
| 3761 | |
| 3762 static struct direct dir_static; /* simulated directory contents */ | |
| 3763 | |
| 3764 /* ARGUSED */ | |
| 3765 struct direct * | |
| 3766 readdir (DIR *dirp) /* stream from opendir */ | |
| 3767 { | |
| 3768 struct olddir *dp; /* -> directory data */ | |
| 3769 | |
| 3770 for (; ;) | |
| 3771 { | |
| 3772 if (dirp->dd_loc >= dirp->dd_size) | |
| 3773 dirp->dd_loc = dirp->dd_size = 0; | |
| 3774 | |
| 3775 if (dirp->dd_size == 0 /* refill buffer */ | |
| 771 | 3776 && (dirp->dd_size = |
| 3777 retry_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
| 428 | 3778 return 0; |
| 3779 | |
| 3780 dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
| 3781 dirp->dd_loc += sizeof (struct olddir); | |
| 3782 | |
| 3783 if (dp->od_ino != 0) /* not deleted entry */ | |
| 3784 { | |
| 3785 dir_static.d_ino = dp->od_ino; | |
| 3786 strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
| 3787 dir_static.d_name[DIRSIZ] = '\0'; | |
| 3788 dir_static.d_namlen = strlen (dir_static.d_name); | |
| 3789 dir_static.d_reclen = sizeof (struct direct) | |
| 3790 - MAXNAMLEN + 3 | |
| 3791 + dir_static.d_namlen - dir_static.d_namlen % 4; | |
| 3792 return &dir_static; /* -> simulated structure */ | |
| 3793 } | |
| 3794 } | |
| 3795 } | |
| 3796 | |
| 3797 | |
| 3798 #endif /* NONSYSTEM_DIR_LIBRARY */ | |
| 3799 | |
| 3800 | |
| 3801 /* mkdir and rmdir functions, for systems which don't have them. */ | |
| 3802 | |
| 3803 #ifndef HAVE_MKDIR | |
| 3804 /* | |
| 3805 * Written by Robert Rother, Mariah Corporation, August 1985. | |
| 3806 * | |
| 3807 * If you want it, it's yours. All I ask in return is that if you | |
| 3808 * figure out how to do this in a Bourne Shell script you send me | |
| 3809 * a copy. | |
| 3810 * sdcsvax!rmr or rmr@uscd | |
| 3811 * | |
| 3812 * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
| 3813 * subroutine. 11Mar86; hoptoad!gnu | |
| 3814 * | |
| 3815 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
| 3816 * subroutine didn't return EEXIST. It does now. | |
| 3817 */ | |
| 3818 | |
| 3819 /* | |
| 3820 * Make a directory. | |
| 3821 */ | |
| 3822 #ifdef MKDIR_PROTOTYPE | |
| 3823 MKDIR_PROTOTYPE | |
| 3824 #else | |
| 3825 int | |
| 442 | 3826 mkdir (const char *dpath, int dmode) |
| 428 | 3827 #endif |
| 3828 { | |
| 3829 int cpid, status, fd; | |
| 3830 struct stat statbuf; | |
| 3831 | |
| 442 | 3832 if (stat (dpath, &statbuf) == 0) /* we do want stat() here */ |
| 428 | 3833 { |
| 3834 errno = EEXIST; /* Stat worked, so it already exists */ | |
| 3835 return -1; | |
| 3836 } | |
| 3837 | |
| 3838 /* If stat fails for a reason other than non-existence, return error */ | |
| 3839 if (errno != ENOENT) | |
| 3840 return -1; | |
| 3841 | |
| 3842 synch_process_alive = 1; | |
| 3843 switch (cpid = fork ()) | |
| 3844 { | |
| 3845 | |
| 3846 case -1: /* Error in fork() */ | |
| 3847 return -1; /* Errno is set already */ | |
| 3848 | |
| 3849 case 0: /* Child process */ | |
| 3850 { | |
| 3851 /* | |
| 3852 * Cheap hack to set mode of new directory. Since this | |
| 3853 * child process is going away anyway, we zap its umask. | |
| 3854 * ####, this won't suffice to set SUID, SGID, etc. on this | |
| 3855 * directory. Does anybody care? | |
| 3856 */ | |
| 3857 status = umask (0); /* Get current umask */ | |
| 3858 status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
| 771 | 3859 fd = open ("/dev/null", O_RDWR); |
| 428 | 3860 if (fd >= 0) |
| 3861 { | |
| 3862 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3863 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3864 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3865 } | |
| 3866 execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); | |
| 3867 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3868 } | |
| 3869 | |
| 3870 default: /* Parent process */ | |
| 3871 wait_for_termination (cpid); | |
| 3872 } | |
| 3873 | |
| 3874 if (synch_process_death != 0 || synch_process_retcode != 0) | |
| 3875 { | |
| 3876 errno = EIO; /* We don't know why, but */ | |
| 3877 return -1; /* /bin/mkdir failed */ | |
| 3878 } | |
| 3879 | |
| 3880 return 0; | |
| 3881 } | |
| 3882 #endif /* not HAVE_MKDIR */ | |
| 3883 | |
| 3884 #ifndef HAVE_RMDIR | |
| 3885 int | |
| 442 | 3886 rmdir (const char *dpath) |
| 428 | 3887 { |
| 3888 int cpid, status, fd; | |
| 3889 struct stat statbuf; | |
| 3890 | |
| 442 | 3891 if (stat (dpath, &statbuf) != 0) /* we do want stat() here */ |
| 428 | 3892 { |
| 3893 /* Stat just set errno. We don't have to */ | |
| 3894 return -1; | |
| 3895 } | |
| 3896 | |
| 3897 synch_process_alive = 1; | |
| 3898 switch (cpid = fork ()) | |
| 3899 { | |
| 3900 | |
| 3901 case -1: /* Error in fork() */ | |
| 3902 return (-1); /* Errno is set already */ | |
| 3903 | |
| 3904 case 0: /* Child process */ | |
| 771 | 3905 fd = open ("/dev/null", O_RDWR); |
| 428 | 3906 if (fd >= 0) |
| 3907 { | |
| 3908 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3909 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3910 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3911 } | |
| 3912 execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); | |
| 3913 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3914 | |
| 3915 default: /* Parent process */ | |
| 3916 wait_for_termination (cpid); | |
| 3917 } | |
| 3918 | |
| 3919 if (synch_process_death != 0 || | |
| 3920 synch_process_retcode != 0) | |
| 3921 { | |
| 3922 errno = EIO; /* We don't know why, but */ | |
| 3923 return -1; /* /bin/rmdir failed */ | |
| 3924 } | |
| 3925 | |
| 3926 return 0; | |
| 3927 } | |
| 3928 #endif /* !HAVE_RMDIR */ | |
| 3929 | |
| 3930 | |
| 3931 /************************************************************************/ | |
| 3932 /* Misc. SunOS crap */ | |
| 3933 /************************************************************************/ | |
| 3934 | |
| 3935 #ifdef USE_DL_STUBS | |
| 3936 | |
| 3937 /* These are included on Sunos 4.1 when we do not use shared libraries. | |
| 3938 X11 libraries may refer to these functions but (we hope) do not | |
| 3939 actually call them. */ | |
| 3940 | |
| 3941 void * | |
| 3942 dlopen (void) | |
| 3943 { | |
| 3944 return 0; | |
| 3945 } | |
| 3946 | |
| 3947 void * | |
| 3948 dlsym (void) | |
| 3949 { | |
| 3950 return 0; | |
| 3951 } | |
| 3952 | |
| 3953 int | |
| 3954 dlclose (void) | |
| 3955 { | |
| 3956 return -1; | |
| 3957 } | |
| 3958 | |
| 3959 #endif /* USE_DL_STUBS */ |