Mercurial > hg > xemacs-beta
annotate src/sysdep.c @ 4759:aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
<870180fe0911101613m6b8efa4bpf083fd9013950807@mail.gmail.com>.
| author | Jerry James <james@xemacs.org> |
|---|---|
| date | Wed, 18 Nov 2009 08:49:14 -0700 |
| parents | b3d7b8b98acf |
| children | 217abcf015c4 |
| 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 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
556 #endif /* !defined (SIGTSTP) */ |
| 428 | 557 |
| 558 | |
| 559 | |
| 560 /* Suspend the Emacs process; give terminal to its superior. */ | |
| 561 void | |
| 562 sys_suspend (void) | |
| 563 { | |
| 564 #if defined (SIGTSTP) | |
| 565 { | |
| 566 int pgrp = EMACS_GET_PROCESS_GROUP (); | |
| 567 EMACS_KILLPG (pgrp, SIGTSTP); | |
| 568 } | |
| 569 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
570 #else /* No SIGTSTP */ |
| 428 | 571 /* If you don't know what this is don't mess with it */ |
| 572 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
| 573 kill (getpid (), SIGQUIT); | |
| 574 #endif | |
| 575 } | |
| 576 | |
| 577 /* Suspend a process if possible; give terminal to its superior. */ | |
| 578 void | |
| 2340 | 579 sys_suspend_process ( |
| 580 #ifdef SIGTSTP | |
| 581 int process | |
| 582 #else | |
| 583 int UNUSED (process) | |
| 584 #endif | |
| 585 ) | |
| 428 | 586 { |
| 587 /* 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
|
588 * VMS machines, but I don't know how to do it, so... |
| 428 | 589 */ |
| 590 #if defined (SIGTSTP) | |
| 591 kill(process, SIGTSTP); | |
| 592 #endif | |
| 593 } | |
| 594 | |
| 595 | |
| 596 /* Given FD, obtain pty buffer size. When no luck, a good guess is made, | |
| 442 | 597 so that the function works even when fd is not a pty. */ |
| 428 | 598 |
| 599 int | |
| 2340 | 600 get_pty_max_bytes ( |
| 601 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
| 602 int fd | |
| 603 #else | |
| 604 int UNUSED (fd) | |
| 605 #endif | |
| 606 ) | |
| 428 | 607 { |
| 442 | 608 /* DEC OSF 4.0 fpathconf returns 255, but xemacs hangs on long shell |
| 609 input lines if we return 253. 252 is OK!. So let's leave a bit | |
| 610 of slack for the newline that xemacs will insert, and for those | |
| 611 inevitable vendor off-by-one-or-two-or-three bugs. */ | |
| 612 #define MAX_CANON_SLACK 10 | |
| 613 #define SAFE_MAX_CANON (127 - MAX_CANON_SLACK) | |
| 428 | 614 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) |
| 442 | 615 { |
| 616 int max_canon = fpathconf (fd, _PC_MAX_CANON); | |
| 617 #ifdef __hpux__ | |
| 618 /* HP-UX 10.20 fpathconf returns 768, but this results in | |
| 619 truncated input lines, while 255 works. */ | |
| 620 if (max_canon > 255) max_canon = 255; | |
| 428 | 621 #endif |
| 442 | 622 return (max_canon < 0 ? SAFE_MAX_CANON : |
| 623 max_canon > SAFE_MAX_CANON ? max_canon - MAX_CANON_SLACK : | |
| 624 max_canon); | |
| 625 } | |
| 626 #elif defined (_POSIX_MAX_CANON) | |
| 627 return (_POSIX_MAX_CANON > SAFE_MAX_CANON ? | |
| 628 _POSIX_MAX_CANON - MAX_CANON_SLACK : | |
| 629 _POSIX_MAX_CANON); | |
| 630 #else | |
| 631 return SAFE_MAX_CANON; | |
| 632 #endif | |
| 428 | 633 } |
| 634 | |
| 635 /* Figure out the eof character for the FD. */ | |
| 636 | |
| 867 | 637 Ibyte |
| 428 | 638 get_eof_char (int fd) |
| 639 { | |
| 867 | 640 const Ibyte ctrl_d = (Ibyte) '\004'; |
| 428 | 641 |
| 642 if (!isatty (fd)) | |
| 643 return ctrl_d; | |
| 644 #ifdef HAVE_TERMIOS | |
| 645 { | |
| 646 struct termios t; | |
| 647 tcgetattr (fd, &t); | |
| 648 #if 0 | |
| 649 /* What is the following line designed to do??? -mrb */ | |
| 647 | 650 if ((int) strlen ((const char *) t.c_cc) < (VEOF + 1)) |
| 428 | 651 return ctrl_d; |
| 652 else | |
| 867 | 653 return (Ibyte) t.c_cc[VEOF]; |
| 428 | 654 #endif |
| 867 | 655 return t.c_cc[VEOF] == _POSIX_VDISABLE ? ctrl_d : (Ibyte) t.c_cc[VEOF]; |
| 428 | 656 } |
| 657 #else /* ! HAVE_TERMIOS */ | |
| 658 /* On Berkeley descendants, the following IOCTL's retrieve the | |
| 659 current control characters. */ | |
| 660 #if defined (TIOCGETC) | |
| 661 { | |
| 662 struct tchars c; | |
| 663 ioctl (fd, TIOCGETC, &c); | |
| 867 | 664 return (Ibyte) c.t_eofc; |
| 428 | 665 } |
| 666 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
| 667 /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
| 668 characters. */ | |
| 669 #ifdef TCGETA | |
| 670 { | |
| 671 struct termio t; | |
| 672 ioctl (fd, TCGETA, &t); | |
| 647 | 673 if ((int) strlen ((const char *) t.c_cc) < (VINTR + 1)) |
| 428 | 674 return ctrl_d; |
| 675 else | |
| 867 | 676 return (Ibyte) t.c_cc[VINTR]; |
| 428 | 677 } |
| 678 #else /* ! defined (TCGETA) */ | |
| 679 /* Rather than complain, we'll just guess ^D, which is what | |
| 680 * earlier emacsen always used. */ | |
| 681 return ctrl_d; | |
| 682 #endif /* ! defined (TCGETA) */ | |
| 683 #endif /* ! defined (TIOCGETC) */ | |
| 684 #endif /* ! defined (HAVE_TERMIOS) */ | |
| 685 } | |
| 686 | |
| 687 /* Set the logical window size associated with descriptor FD | |
| 688 to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
| 689 | |
| 690 int | |
| 2340 | 691 set_window_size ( |
| 692 #if defined (TIOCSWINSZ) || defined (TIOCSSIZE) | |
| 693 int fd, int height, int width | |
| 694 #else | |
| 695 int UNUSED (fd), int UNUSED (height), int UNUSED (width) | |
| 696 #endif | |
| 697 ) | |
| 428 | 698 { |
| 699 #ifdef TIOCSWINSZ | |
| 700 | |
| 701 /* BSD-style. */ | |
| 702 struct winsize size; | |
| 703 size.ws_row = height; | |
| 704 size.ws_col = width; | |
| 705 | |
| 706 if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
| 707 return 0; /* error */ | |
| 708 else | |
| 709 return 1; | |
| 710 | |
| 711 #elif defined (TIOCSSIZE) | |
| 712 | |
| 713 /* SunOS - style. */ | |
| 714 struct ttysize size; | |
| 715 size.ts_lines = height; | |
| 716 size.ts_cols = width; | |
| 717 | |
| 718 if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
| 719 return 0; | |
| 720 else | |
| 721 return 1; | |
| 722 #else | |
| 723 return -1; | |
| 724 #endif | |
| 725 } | |
| 726 | |
| 727 /* Set up the proper status flags for use of a pty. */ | |
| 728 | |
| 729 void | |
| 2340 | 730 setup_pty ( |
| 731 #ifdef TIOCPKT | |
| 732 int fd | |
| 733 #else | |
| 734 int UNUSED (fd) | |
| 735 #endif | |
| 736 ) | |
| 428 | 737 { |
| 738 #ifdef TIOCPKT | |
| 739 /* In some systems (Linux through 2.0.0, at least), packet mode doesn't | |
| 740 get cleared when a pty is closed, so we need to clear it here. | |
| 741 Linux pre2.0.13 contained an attempted fix for this (from Ted Ts'o, | |
| 742 tytso@mit.edu), but apparently it messed up rlogind and telnetd, so he | |
| 743 removed the fix in pre2.0.14. - dkindred@cs.cmu.edu | |
| 744 */ | |
| 745 { | |
| 746 int off = 0; | |
| 747 ioctl (fd, TIOCPKT, (char *)&off); | |
| 748 } | |
| 535 | 749 #endif /* TIOCPKT */ |
| 428 | 750 } |
| 751 | |
| 752 | |
| 753 /************************************************************************/ | |
| 754 /* TTY control */ | |
| 755 /************************************************************************/ | |
| 756 | |
| 757 /* ------------------------------------------------------ */ | |
| 758 /* get baud rate */ | |
| 759 /* ------------------------------------------------------ */ | |
| 760 | |
| 761 /* It really makes more sense for the baud-rate to be console-specific | |
| 762 and not device-specific, but it's (at least potentially) used for output | |
| 763 decisions. */ | |
| 764 | |
| 765 void | |
| 766 init_baud_rate (struct device *d) | |
| 767 { | |
| 768 if (DEVICE_WIN_P (d) || DEVICE_STREAM_P (d)) | |
| 769 { | |
| 770 DEVICE_BAUD_RATE (d) = 38400; | |
| 771 return; | |
| 772 } | |
| 773 | |
| 774 #ifdef HAVE_TTY | |
| 775 assert (DEVICE_TTY_P (d)); | |
| 776 { | |
| 647 | 777 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 428 | 778 int input_fd = CONSOLE_TTY_DATA (con)->infd; |
| 814 | 779 #ifdef HAVE_TERMIOS |
| 428 | 780 struct termios sg; |
| 781 | |
| 782 sg.c_cflag = B9600; | |
| 783 tcgetattr (input_fd, &sg); | |
| 784 DEVICE_TTY_DATA (d)->ospeed = cfgetospeed (&sg); | |
| 785 #elif defined (HAVE_TERMIO) | |
| 786 struct termio sg; | |
| 787 | |
| 788 sg.c_cflag = B9600; | |
| 789 # ifdef HAVE_TCATTR | |
| 790 tcgetattr (input_fd, &sg); | |
| 791 # else | |
| 792 ioctl (input_fd, TCGETA, &sg); | |
| 793 # endif | |
| 794 DEVICE_TTY_DATA (d)->ospeed = sg.c_cflag & CBAUD; | |
| 795 #else /* neither TERMIOS nor TERMIO */ | |
| 796 struct sgttyb sg; | |
| 797 | |
| 798 sg.sg_ospeed = B9600; | |
| 799 if (ioctl (input_fd, TIOCGETP, &sg) < 0) | |
| 2500 | 800 ABORT (); |
| 428 | 801 DEVICE_TTY_DATA (d)->ospeed = sg.sg_ospeed; |
| 802 #endif | |
| 803 } | |
| 804 | |
| 805 DEVICE_BAUD_RATE (d) = | |
| 806 (DEVICE_TTY_DATA (d)->ospeed < countof (baud_convert) | |
| 807 ? baud_convert[DEVICE_TTY_DATA (d)->ospeed] | |
| 808 : 9600); | |
| 809 | |
| 810 if (DEVICE_BAUD_RATE (d) == 0) | |
| 811 DEVICE_BAUD_RATE (d) = 1200; | |
| 812 #endif /* HAVE_TTY */ | |
| 813 } | |
| 814 | |
| 815 | |
| 816 /* ------------------------------------------------------ */ | |
| 817 /* SIGIO control */ | |
| 818 /* ------------------------------------------------------ */ | |
| 819 | |
| 853 | 820 #if defined (SIGIO) && !defined (BROKEN_SIGIO) |
| 428 | 821 |
| 822 static void | |
| 823 init_sigio_on_device (struct device *d) | |
| 824 { | |
| 825 int filedesc = DEVICE_INFD (d); | |
| 826 | |
| 827 #if defined (FIOSSAIOOWN) | |
| 828 { /* HPUX stuff */ | |
| 829 int owner = getpid (); | |
| 830 int ioctl_status; | |
| 831 if (DEVICE_TTY_P (d)) | |
| 832 { | |
| 833 ioctl_status = ioctl (filedesc, FIOGSAIOOWN, | |
| 834 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 835 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, &owner); | |
| 836 } | |
| 837 #ifdef HAVE_WINDOW_SYSTEM | |
| 838 else if (!DEVICE_STREAM_P (d)) | |
| 839 { | |
| 840 ioctl_status = ioctl (filedesc, SIOCGPGRP, | |
| 841 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 842 ioctl_status = ioctl (filedesc, SIOCSPGRP, &owner); | |
| 843 } | |
| 844 #endif | |
| 845 } | |
| 846 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 847 DEVICE_OLD_FCNTL_OWNER (d) = fcntl (filedesc, F_GETOWN, 0); | |
| 848 fcntl (filedesc, F_SETOWN, getpid ()); | |
| 849 #endif | |
| 850 } | |
| 851 | |
| 852 static void | |
| 853 reset_sigio_on_device (struct device *d) | |
| 854 { | |
| 855 int filedesc = DEVICE_INFD (d); | |
| 856 | |
| 857 #if defined (FIOSSAIOOWN) | |
| 858 { /* HPUX stuff */ | |
| 859 int ioctl_status; | |
| 860 if (DEVICE_TTY_P (d)) | |
| 861 { | |
| 862 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, | |
| 863 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 864 } | |
| 865 #ifdef HAVE_WINDOW_SYSTEM | |
| 866 else if (!DEVICE_STREAM_P (d)) | |
| 867 { | |
| 868 ioctl_status = ioctl (filedesc, SIOCSPGRP, | |
| 869 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 870 } | |
| 871 #endif | |
| 872 } | |
| 873 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 874 fcntl (filedesc, F_SETOWN, DEVICE_OLD_FCNTL_OWNER (d)); | |
| 875 #endif | |
| 876 } | |
| 877 | |
| 878 static void | |
| 879 request_sigio_on_device (struct device *d) | |
| 880 { | |
| 881 int filedesc = DEVICE_INFD (d); | |
| 882 | |
| 502 | 883 /* NOTE: It appears that Linux has its own mechanism for requesting |
| 884 SIGIO, using the F_GETSIG and F_SETSIG commands to fcntl(). | |
| 885 These let you pick which signal you want sent (not just SIGIO), | |
| 886 and if you do this, you get additional info which tells you which | |
| 887 file descriptor has input ready on it. The man page says: | |
| 888 | |
| 889 Using these mechanisms, a program can implement fully | |
| 890 asynchronous I/O without using select(2) or poll(2) most | |
| 891 of the time. | |
| 892 | |
| 893 The use of O_ASYNC, F_GETOWN, F_SETOWN is specific to BSD | |
| 894 and Linux. F_GETSIG and F_SETSIG are Linux-specific. | |
| 895 POSIX has asynchronous I/O and the aio_sigevent structure | |
| 896 to achieve similar things; these are also available in | |
| 897 Linux as part of the GNU C Library (Glibc). | |
| 898 | |
| 899 But it appears that Linux also supports O_ASYNC, so I see no | |
| 900 particular need to switch. --ben | |
| 901 */ | |
| 902 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
903 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 904 { |
| 502 | 905 int events = 0; |
| 428 | 906 ioctl (filedesc, I_GETSIG, &events); |
| 907 ioctl (filedesc, I_SETSIG, events | S_INPUT); | |
| 908 } | |
| 502 | 909 #elif defined (O_ASYNC) |
| 910 /* Generally FASYNC and O_ASYNC are both defined, and both equal; | |
| 911 but let's not depend on that. O_ASYNC appears to be more | |
| 912 standard (at least the Linux include files think so), so | |
| 913 check it first. */ | |
| 914 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | O_ASYNC); | |
| 428 | 915 #elif defined (FASYNC) |
| 916 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | FASYNC); | |
| 917 #elif defined (FIOSSAIOSTAT) | |
| 918 { | |
| 919 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 920 sockets and other devices for some bizarre reason. We guess | |
| 921 that an X device is a socket, and tty devices aren't. We then | |
| 922 use the following crud to do the appropriate thing. */ | |
| 923 int on = 1; | |
| 924 int ioctl_status; /* ####DG: check if IOCTL succeeds here. */ | |
| 925 | |
| 926 if (DEVICE_TTY_P (d)) | |
| 927 { | |
| 928 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &on); | |
| 929 } | |
| 930 #ifdef HAVE_WINDOW_SYSTEM | |
| 931 else if (!DEVICE_STREAM_P (d)) | |
| 932 { | |
| 933 ioctl_status = ioctl (filedesc, FIOASYNC, &on); | |
| 934 } | |
| 935 #endif | |
| 936 } | |
| 937 #elif defined (FIOASYNC) | |
| 938 { | |
| 939 int on = 1; | |
| 940 ioctl (filedesc, FIOASYNC, &on); | |
| 941 } | |
| 942 #endif | |
| 943 } | |
| 944 | |
| 945 static void | |
| 946 unrequest_sigio_on_device (struct device *d) | |
| 947 { | |
| 948 int filedesc = DEVICE_INFD (d); | |
| 949 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
950 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 951 { |
| 502 | 952 int events = 0; |
| 428 | 953 ioctl (filedesc, I_GETSIG, &events); |
| 954 ioctl (filedesc, I_SETSIG, events & ~S_INPUT); | |
| 955 } | |
| 502 | 956 #elif defined (O_ASYNC) |
| 957 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~O_ASYNC); | |
| 428 | 958 #elif defined (FASYNC) |
| 959 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~FASYNC); | |
| 960 #elif defined (FIOSSAIOSTAT) | |
| 961 { | |
| 962 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 963 sockets and other devices for some bizarre reason. We guess | |
| 964 that an X device is a socket, and tty devices aren't. We then | |
| 965 use the following crud to do the appropriate thing. */ | |
| 966 | |
| 967 int off = 0; | |
| 968 int ioctl_status; | |
| 969 | |
| 970 /* See comment for request_sigio_on_device */ | |
| 971 | |
| 972 if (DEVICE_TTY_P (d)) | |
| 973 { | |
| 974 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &off); | |
| 975 } | |
| 976 else | |
| 977 { | |
| 978 ioctl_status = ioctl (filedesc, FIOASYNC, &off); | |
| 979 } | |
| 980 } | |
| 981 #elif defined (FIOASYNC) | |
| 982 { | |
| 983 int off = 0; | |
| 984 ioctl (filedesc, FIOASYNC, &off); | |
| 985 } | |
| 986 #endif | |
| 987 } | |
| 988 | |
| 989 void | |
| 990 request_sigio (void) | |
| 991 { | |
| 992 Lisp_Object devcons, concons; | |
| 993 | |
| 994 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 995 { | |
| 996 struct device *d; | |
| 997 | |
| 998 d = XDEVICE (XCAR (devcons)); | |
| 999 | |
| 1000 if (!DEVICE_STREAM_P (d)) | |
| 1001 request_sigio_on_device (d); | |
| 1002 } | |
| 1003 } | |
| 1004 | |
| 1005 void | |
| 1006 unrequest_sigio (void) | |
| 1007 { | |
| 1008 Lisp_Object devcons, concons; | |
| 1009 | |
| 1010 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1011 { | |
| 1012 struct device *d; | |
| 1013 | |
| 1014 d = XDEVICE (XCAR (devcons)); | |
| 1015 | |
| 1016 if (!DEVICE_STREAM_P (d)) | |
| 1017 unrequest_sigio_on_device (d); | |
| 1018 } | |
| 1019 } | |
| 1020 | |
| 1021 #endif /* SIGIO */ | |
| 1022 | |
| 1023 /* ------------------------------------------------------ */ | |
| 1024 /* Changing Emacs's process group */ | |
| 1025 /* ------------------------------------------------------ */ | |
| 1026 | |
| 1027 /* Saving and restoring the process group of Emacs's terminal. */ | |
| 1028 | |
| 1029 /* On some systems, apparently (?!) Emacs must be in its own process | |
| 1030 group in order to receive SIGIO correctly. On other systems | |
| 1031 (e.g. Solaris), it's not required and doing it makes things | |
| 1032 get fucked up. So, we only do it when | |
| 1033 SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP is defined. Basically, | |
| 1034 this is only required for BSD 4.2 systems. (Actually, I bet | |
| 1035 we don't have to do this at all -- those systems also | |
| 1036 required interrupt input, which we don't support.) | |
| 1037 | |
| 1038 If Emacs was in its own process group (i.e. inherited_pgroup == | |
| 1039 getpid ()), then we know we're running under a shell with job | |
| 1040 control (Emacs would never be run as part of a pipeline). | |
| 1041 Everything is fine. | |
| 1042 | |
| 1043 If Emacs was not in its own process group, then we know we're | |
| 1044 running under a shell (or a caller) that doesn't know how to | |
| 1045 separate itself from Emacs (like sh). Emacs must be in its own | |
| 1046 process group in order to receive SIGIO correctly. In this | |
| 1047 situation, we put ourselves in our own pgroup, forcibly set the | |
| 1048 tty's pgroup to our pgroup, and make sure to restore and reinstate | |
| 1049 the tty's pgroup just like any other terminal setting. If | |
| 1050 inherited_group was not the tty's pgroup, then we'll get a | |
| 1051 SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
| 1052 it goes foreground in the future, which is what should happen. */ | |
| 1053 | |
| 1054 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1055 | |
| 442 | 1056 static pid_t inherited_pgroup; |
| 1057 static pid_t inherited_tty_pgroup; | |
| 428 | 1058 |
| 1059 #endif | |
| 1060 | |
| 1061 void | |
| 1062 munge_tty_process_group (void) | |
| 1063 { | |
| 1064 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1065 if (noninteractive) | |
| 1066 return; | |
| 1067 | |
| 1068 /* Only do this munging if we have a device on the controlling | |
| 1069 terminal. See the large comment below. */ | |
| 1070 | |
| 1071 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1072 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1073 { | |
| 1074 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 442 | 1075 pid_t me = getpid (); |
| 428 | 1076 EMACS_BLOCK_SIGNAL (SIGTTOU); |
| 1077 EMACS_SET_TTY_PROCESS_GROUP (fd, &me); | |
| 1078 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1079 retry_close (fd); |
| 428 | 1080 } |
| 1081 #endif | |
| 1082 } | |
| 1083 | |
| 1084 /* Split off the foreground process group to Emacs alone. | |
| 1085 When we are in the foreground, but not started in our own process | |
| 1086 group, redirect the TTY to point to our own process group. We need | |
| 1087 to be in our own process group to receive SIGIO properly. */ | |
| 1088 static void | |
| 1089 munge_process_groups (void) | |
| 1090 { | |
| 1091 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1092 if (noninteractive) | |
| 1093 return; | |
| 1094 | |
| 1095 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1096 | |
| 1097 munge_tty_process_group (); | |
| 1098 #endif | |
| 1099 } | |
| 1100 | |
| 1101 void | |
| 1102 unmunge_tty_process_group (void) | |
| 1103 { | |
| 1104 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1105 { | |
| 1106 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1107 EMACS_BLOCK_SIGNAL (SIGTTOU); | |
| 1108 EMACS_SET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 1109 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1110 retry_close (fd); |
| 428 | 1111 } |
| 1112 #endif | |
| 1113 } | |
| 1114 | |
| 1115 /* Set the tty to our original foreground group. | |
| 1116 Also restore the original process group (put us back into sh's | |
| 1117 process group), so that ^Z will suspend both us and sh. */ | |
| 1118 static void | |
| 1119 unmunge_process_groups (void) | |
| 1120 { | |
| 1121 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1122 if (noninteractive) | |
| 1123 return; | |
| 1124 | |
| 1125 unmunge_tty_process_group (); | |
| 1126 | |
| 1127 EMACS_SET_PROCESS_GROUP (inherited_pgroup); | |
| 1128 #endif | |
| 1129 } | |
| 1130 | |
| 1131 /* According to some old wisdom, we need to be in a separate process | |
| 1132 group for SIGIO to work correctly (at least on some systems ...). | |
| 1133 So go ahead and put ourselves into our own process group. This | |
| 1134 will fail if we're already in our own process group, but who cares. | |
| 1135 Also record whether we were in our own process group. (In general, | |
| 1136 we will already be in our own process group if we were started from | |
| 1137 a job-control shell like csh, but not if we were started from sh). | |
| 1138 | |
| 1139 If we succeeded in changing our process group, then we will no | |
| 1140 longer be in the foreground process group of our controlling | |
| 1141 terminal. Therefore, if we have a console open onto this terminal, | |
| 1142 we have to change the controlling terminal's foreground process | |
| 1143 group (otherwise we will get stopped with a SIGTTIN signal when | |
| 1144 attempting to read from the terminal). It's important, | |
| 1145 however, that we do this *only* when we have a console open onto | |
| 1146 the terminal. It's a decidedly bad idea to do so otherwise, | |
| 1147 especially if XEmacs was started from the background. */ | |
| 1148 | |
| 1149 void | |
| 1150 init_process_group (void) | |
| 1151 { | |
| 1152 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1153 if (! noninteractive) | |
| 1154 { | |
| 1155 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1156 inherited_pgroup = EMACS_GET_PROCESS_GROUP (); | |
| 1157 EMACS_GET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 771 | 1158 retry_close (fd); |
| 428 | 1159 EMACS_SEPARATE_PROCESS_GROUP (); |
| 1160 } | |
| 1161 #endif | |
| 1162 } | |
| 1163 | |
| 1164 void | |
| 1165 disconnect_controlling_terminal (void) | |
| 1166 { | |
| 1167 # ifdef HAVE_SETSID | |
| 1168 /* Controlling terminals are attached to a session. | |
| 1169 Create a new session for us; it will have no controlling | |
| 1170 terminal. This also, of course, puts us in our own | |
| 1171 process group. */ | |
| 1172 setsid (); | |
| 1173 # else | |
| 1174 /* Put us in our own process group. */ | |
| 1175 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1176 # if defined (TIOCNOTTY) | |
| 1177 /* This is the older way of disconnecting the controlling | |
| 1178 terminal, on 4.3 BSD. We must open /dev/tty; using | |
| 1179 filedesc 0 is not sufficient because it could be | |
| 1180 something else (e.g. our stdin was redirected to | |
| 1181 another terminal). | |
| 1182 */ | |
| 1183 { | |
| 1184 int j = open ("/dev/tty", O_RDWR, 0); | |
| 1185 ioctl (j, TIOCNOTTY, 0); | |
| 771 | 1186 retry_close (j); |
| 428 | 1187 } |
| 1188 # endif /* TIOCNOTTY */ | |
| 1189 /* | |
| 1190 On systems without TIOCNOTTY and without | |
| 1191 setsid(), we don't need to do anything more to | |
| 1192 disconnect our controlling terminal. Here is | |
| 1193 what the man page for termio(7) from a SYSV 3.2 | |
| 1194 system says: | |
| 1195 | |
| 1196 "The first terminal file opened by the process group leader | |
| 1197 of a terminal file not already associated with a process | |
| 1198 group becomes the control terminal for that process group. | |
| 1199 The control terminal plays a special role in handling quit | |
| 1200 and interrupt signals, as discussed below. The control | |
| 1201 terminal is inherited by a child process during a fork(2). | |
| 1202 A process can break this association by changing its process | |
| 1203 group using setpgrp(2)." | |
| 1204 | |
| 1205 */ | |
| 1206 # endif /* not HAVE_SETSID */ | |
| 1207 } | |
| 1208 | |
| 1209 | |
| 1210 /* ------------------------------------------------------ */ | |
| 1211 /* Getting and setting emacs_tty structures */ | |
| 1212 /* ------------------------------------------------------ */ | |
| 1213 | |
| 1214 /* It's wrong to encase these into #ifdef HAVE_TTY because we need | |
| 1215 them for child TTY processes. */ | |
| 1216 /* However, this does break NT support while we don't do child TTY processes */ | |
| 442 | 1217 #ifndef WIN32_NATIVE |
| 428 | 1218 |
| 1219 /* Set *TC to the parameters associated with the terminal FD. | |
| 1220 Return zero if all's well, or -1 if we ran into an error we | |
| 1221 couldn't deal with. */ | |
| 1222 int | |
| 1223 emacs_get_tty (int fd, struct emacs_tty *settings) | |
| 1224 { | |
| 1225 /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
| 1226 #ifdef HAVE_TCATTR | |
| 1227 /* We have those nifty POSIX tcmumbleattr functions. */ | |
| 1228 if (tcgetattr (fd, &settings->main) < 0) | |
| 1229 return -1; | |
| 1230 | |
| 1231 #elif defined HAVE_TERMIO | |
| 1232 /* The SYSV-style interface? */ | |
| 1233 if (ioctl (fd, TCGETA, &settings->main) < 0) | |
| 1234 return -1; | |
| 1235 | |
| 814 | 1236 #else |
| 428 | 1237 /* I give up - I hope you have the BSD ioctls. */ |
| 1238 if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
| 1239 return -1; | |
| 1240 #endif /* HAVE_TCATTR */ | |
| 1241 | |
| 1242 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1243 #ifdef HAVE_LTCHARS | |
| 1244 if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) | |
| 1245 return -1; | |
| 1246 #endif | |
| 1247 | |
| 1248 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1249 #ifdef HAVE_TCHARS | |
| 1250 if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 | |
| 1251 || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
| 1252 return -1; | |
| 1253 #endif | |
| 1254 | |
| 1255 /* We have survived the tempest. */ | |
| 1256 return 0; | |
| 1257 } | |
| 1258 | |
| 1259 /* Set the parameters of the tty on FD according to the contents of | |
| 1260 *SETTINGS. If FLUSHP is non-zero, we discard input. | |
| 430 | 1261 Return 0 if all went well, and -1 if anything failed. |
| 1262 #### All current callers use FLUSHP == 0. */ | |
| 428 | 1263 |
| 1264 int | |
| 1265 emacs_set_tty (int fd, struct emacs_tty *settings, int flushp) | |
| 1266 { | |
| 1267 /* Set the primary parameters - baud rate, character size, etcetera. */ | |
| 1268 #ifdef HAVE_TCATTR | |
| 1269 int i; | |
| 1270 /* We have those nifty POSIX tcmumbleattr functions. | |
| 1271 William J. Smith <wjs@wiis.wang.com> writes: | |
| 1272 "POSIX 1003.1 defines tcsetattr() to return success if it was | |
| 1273 able to perform any of the requested actions, even if some | |
| 1274 of the requested actions could not be performed. | |
| 1275 We must read settings back to ensure tty setup properly. | |
| 1276 AIX requires this to keep tty from hanging occasionally." */ | |
| 1277 /* This makes sure that we don't loop indefinitely in here. */ | |
| 1278 for (i = 0 ; i < 10 ; i++) | |
| 1279 if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) | |
| 1280 { | |
| 1281 if (errno == EINTR) | |
| 1282 continue; | |
| 1283 else | |
| 1284 return -1; | |
| 1285 } | |
| 1286 else | |
| 1287 { | |
| 2957 | 1288 struct termios new_; |
| 428 | 1289 |
| 1290 /* Get the current settings, and see if they're what we asked for. */ | |
| 2957 | 1291 tcgetattr (fd, &new_); |
| 428 | 1292 /* We cannot use memcmp on the whole structure here because under |
| 1293 * aix386 the termios structure has some reserved field that may | |
| 1294 * 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
|
1295 * FIXME: Now that aix386 is gone, can we memcmp the whole structure? |
| 428 | 1296 */ |
| 2957 | 1297 if ( new_.c_iflag == settings->main.c_iflag |
| 1298 && new_.c_oflag == settings->main.c_oflag | |
| 1299 && new_.c_cflag == settings->main.c_cflag | |
| 1300 && new_.c_lflag == settings->main.c_lflag | |
| 1301 && memcmp(new_.c_cc, settings->main.c_cc, NCCS) == 0) | |
| 428 | 1302 break; |
| 1303 else | |
| 1304 continue; | |
| 1305 } | |
| 1306 #elif defined HAVE_TERMIO | |
| 1307 /* The SYSV-style interface? */ | |
| 1308 if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) | |
| 1309 return -1; | |
| 1310 | |
| 814 | 1311 #else |
| 428 | 1312 /* I give up - I hope you have the BSD ioctls. */ |
| 1313 if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
| 1314 return -1; | |
| 1315 #endif /* HAVE_TCATTR */ | |
| 1316 | |
| 1317 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1318 #ifdef HAVE_LTCHARS | |
| 1319 if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) | |
| 1320 return -1; | |
| 1321 #endif | |
| 1322 | |
| 1323 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1324 #ifdef HAVE_TCHARS | |
| 1325 if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 | |
| 1326 || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
| 1327 return -1; | |
| 1328 #endif | |
| 1329 | |
| 1330 /* We have survived the tempest. */ | |
| 1331 return 0; | |
| 1332 } | |
| 1333 | |
| 442 | 1334 #endif /* WIN32_NATIVE */ |
| 428 | 1335 |
| 1336 /* ------------------------------------------------------ */ | |
| 1337 /* Initializing a device */ | |
| 1338 /* ------------------------------------------------------ */ | |
| 1339 | |
| 1340 #ifdef HAVE_TTY | |
| 1341 | |
| 1342 #if defined (TIOCGLTC) && defined (HAVE_LTCHARS) /* HAVE_LTCHARS */ | |
| 1343 static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; | |
| 1344 #endif | |
| 1345 #ifdef TIOCGETC /* HAVE_TCHARS */ | |
| 1346 #ifdef HAVE_TCHARS | |
| 1347 static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; | |
| 1348 #endif | |
| 1349 #endif | |
| 1350 | |
| 1351 static void | |
| 1352 tty_init_sys_modes_on_device (struct device *d) | |
| 1353 { | |
| 1354 struct emacs_tty tty; | |
| 2286 | 1355 int input_fd; |
| 428 | 1356 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1357 | |
| 1358 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
| 1359 | |
| 430 | 1360 emacs_get_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty); |
| 428 | 1361 tty = CONSOLE_TTY_DATA (con)->old_tty; |
| 1362 | |
| 1363 con->tty_erase_char = Qnil; | |
| 1364 | |
| 1365 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1366 /* after all those years... */ | |
| 1367 con->tty_erase_char = make_char (tty.main.c_cc[VERASE]); | |
| 1368 tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ | |
| 1369 tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
| 1370 #ifdef ISTRIP | |
| 1371 tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
| 1372 #endif | |
| 1373 tty.main.c_lflag &= ~ECHO; /* Disable echo */ | |
| 1374 tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
| 1375 #ifdef IEXTEN | |
| 1376 tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ | |
| 1377 #endif | |
| 1378 tty.main.c_lflag |= ISIG; /* Enable signals */ | |
| 1379 if (TTY_FLAGS (con).flow_control) | |
| 1380 { | |
| 1381 tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
| 1382 #ifdef IXANY | |
| 1383 tty.main.c_iflag &= ~IXANY; | |
| 1384 #endif /* IXANY */ | |
| 1385 } | |
| 1386 else | |
| 1387 tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
| 1388 tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
| 1389 on output */ | |
| 513 | 1390 |
| 1391 #if 0 | |
| 1392 /* We used to disable tab expansion here, but this is the user's decision. */ | |
| 1393 #if defined (TABDLY) && defined (TAB3) | |
| 1394 if ((tty.main.c_oflag & TABDLY) == TAB3) | |
| 1395 tty.main.c_oflag &= ~TABDLY; /* Disable tab expansion (Posix). */ | |
| 1396 #elif defined (OXTABS) | |
| 1397 tty.main.c_oflag &= ~OXTABS; /* Disable tab expansion (BSD). */ | |
| 1398 #endif | |
| 1399 #endif /* 0 */ | |
| 1400 | |
| 428 | 1401 #ifdef CS8 |
| 1402 if (TTY_FLAGS (con).meta_key) | |
| 1403 { | |
| 1404 tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
| 1405 tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
| 1406 } | |
| 1407 #endif | |
| 1408 if (CONSOLE_TTY_DATA (con)->controlling_terminal) | |
| 1409 { | |
| 1204 | 1410 tty.main.c_cc[VINTR] = /* C-g (usually) gives SIGINT */ |
| 2828 | 1411 event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1412 /* Set up C-g for both SIGQUIT and SIGINT. |
| 1413 We don't know which we will get, but we handle both alike | |
| 1414 so which one it really gives us does not matter. */ | |
| 1204 | 1415 tty.main.c_cc[VQUIT] = tty.main.c_cc[VINTR]; |
| 428 | 1416 } |
| 1417 else | |
| 1418 { | |
| 1419 tty.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 1420 tty.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 1421 } | |
| 1422 tty.main.c_cc[VMIN] = 1; /* Input should wait for at | |
| 1423 least 1 char */ | |
| 1424 tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
| 1425 #ifdef VSWTCH | |
| 1426 tty.main.c_cc[VSWTCH] = _POSIX_VDISABLE; /* Turn off shell layering use | |
| 1427 of C-z */ | |
| 1428 #endif /* VSWTCH */ | |
| 1429 /* There was some conditionalizing here on (mips or TCATTR), but | |
| 1430 I think that's wrong. There was one report of C-y (DSUSP) not being | |
| 1431 disabled on HP9000s700 systems, and this might fix it. */ | |
| 1432 #ifdef VSUSP | |
| 1433 tty.main.c_cc[VSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-z. */ | |
| 1434 #endif /* VSUSP */ | |
| 1435 #ifdef V_DSUSP | |
| 1436 tty.main.c_cc[V_DSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-y. */ | |
| 1437 #endif /* V_DSUSP */ | |
| 1438 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ | |
| 1439 tty.main.c_cc[VDSUSP] = _POSIX_VDISABLE; | |
| 1440 #endif /* VDSUSP */ | |
| 1441 #ifdef VLNEXT | |
| 1442 tty.main.c_cc[VLNEXT] = _POSIX_VDISABLE; | |
| 1443 #endif /* VLNEXT */ | |
| 1444 #ifdef VREPRINT | |
| 1445 tty.main.c_cc[VREPRINT] = _POSIX_VDISABLE; | |
| 1446 #endif /* VREPRINT */ | |
| 1447 #ifdef VWERASE | |
| 1448 tty.main.c_cc[VWERASE] = _POSIX_VDISABLE; | |
| 1449 #endif /* VWERASE */ | |
| 1450 #ifdef VDISCARD | |
| 1451 tty.main.c_cc[VDISCARD] = _POSIX_VDISABLE; | |
| 1452 #endif /* VDISCARD */ | |
| 1453 #ifdef VSTART | |
| 1454 tty.main.c_cc[VSTART] = _POSIX_VDISABLE; | |
| 1455 #endif /* VSTART */ | |
| 1456 #ifdef VSTRT | |
| 1457 tty.main.c_cc[VSTRT] = _POSIX_VDISABLE; /* called VSTRT on some systems */ | |
| 1458 #endif /* VSTART */ | |
| 1459 #ifdef VSTOP | |
| 1460 tty.main.c_cc[VSTOP] = _POSIX_VDISABLE; | |
| 1461 #endif /* VSTOP */ | |
| 1462 | |
| 1463 #ifdef AIX | |
| 1464 #ifndef IBMR2AIX | |
| 1465 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 1466 tty.main.c_line = 0; | |
| 1467 tty.main.c_iflag &= ~ASCEDIT; | |
| 1468 #else | |
| 1469 tty.main.c_cc[VSTRT] = 255; | |
| 1470 tty.main.c_cc[VSTOP] = 255; | |
| 1471 tty.main.c_cc[VSUSP] = 255; | |
| 1472 tty.main.c_cc[VDSUSP] = 255; | |
| 1473 #endif /* IBMR2AIX */ | |
| 1474 /* Also, PTY overloads NUL and BREAK. | |
| 1475 don't ignore break, but don't signal either, so it looks like NUL. | |
| 1476 This really serves a purpose only if running in an XTERM window | |
| 1477 or via TELNET or the like, but does no harm elsewhere. */ | |
| 1478 tty.main.c_iflag &= ~IGNBRK; | |
| 1479 tty.main.c_iflag &= ~BRKINT; | |
| 1480 #endif /* AIX */ | |
| 1481 #else /* if not HAVE_TERMIO */ | |
| 1482 con->tty_erase_char = make_char (tty.main.sg_erase); | |
| 1483 tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); | |
| 1484 if (TTY_FLAGS (con).meta_key) | |
| 1485 tty.main.sg_flags |= ANYP; | |
| 1486 /* #### should we be using RAW mode here? */ | |
| 1487 tty.main.sg_flags |= /* interrupt_input ? RAW : */ CBREAK; | |
| 1488 #endif /* not HAVE_TERMIO */ | |
| 1489 | |
| 1490 /* If going to use CBREAK mode, we must request C-g to interrupt | |
| 1491 and turn off start and stop chars, etc. If not going to use | |
| 1492 CBREAK mode, do this anyway so as to turn off local flow | |
| 1493 control for user coming over network on 4.2; in this case, | |
| 1494 only t_stopc and t_startc really matter. */ | |
| 1495 #ifndef HAVE_TERMIO | |
| 1496 #ifdef HAVE_TCHARS | |
| 1497 /* Note: if not using CBREAK mode, it makes no difference how we | |
| 1498 set this */ | |
| 1499 tty.tchars = new_tchars; | |
| 2828 | 1500 tty.tchars.t_intrc = event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1501 if (TTY_FLAGS (con).flow_control) |
| 1502 { | |
| 1503 tty.tchars.t_startc = '\021'; | |
| 1504 tty.tchars.t_stopc = '\023'; | |
| 1505 } | |
| 1506 | |
| 1507 tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | | |
| 1508 CONSOLE_TTY_DATA (con)->old_tty.lmode; | |
| 1509 #endif /* HAVE_TCHARS */ | |
| 1510 #endif /* not HAVE_TERMIO */ | |
| 1511 | |
| 1512 #ifdef HAVE_LTCHARS | |
| 1513 tty.ltchars = new_ltchars; | |
| 1514 #endif /* HAVE_LTCHARS */ | |
| 1515 | |
| 430 | 1516 emacs_set_tty (input_fd, &tty, 0); |
| 428 | 1517 |
| 1518 /* This code added to insure that, if flow-control is not to be used, | |
| 1519 we have an unlocked terminal at the start. */ | |
| 1520 | |
| 1521 #ifdef TCXONC | |
| 1522 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TCXONC, 1); | |
| 1523 #endif | |
| 1524 #ifdef TIOCSTART | |
| 1525 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TIOCSTART, 0); | |
| 1526 #endif | |
| 1527 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1528 #if defined (HAVE_TERMIOS) |
| 428 | 1529 #ifdef TCOON |
| 1530 if (!TTY_FLAGS (con).flow_control) tcflow (input_fd, TCOON); | |
| 1531 #endif | |
| 1532 #endif | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1533 |
| 428 | 1534 set_tty_modes (con); |
| 1535 } | |
| 1536 | |
| 1537 #endif /* HAVE_TTY */ | |
| 1538 | |
| 1539 void | |
| 2340 | 1540 init_one_device ( |
| 1541 #if defined(HAVE_TTY) || (defined(SIGIO) && !defined(BROKEN_SIGIO)) | |
| 1542 struct device *d | |
| 1543 #else | |
| 1544 struct device *UNUSED (d) | |
| 1545 #endif | |
| 1546 ) | |
| 428 | 1547 { |
| 1548 #ifdef HAVE_TTY | |
| 1549 if (DEVICE_TTY_P (d)) | |
| 1550 tty_init_sys_modes_on_device (d); | |
| 1551 #endif | |
| 1552 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1553 if (!DEVICE_STREAM_P (d)) | |
| 1554 { | |
| 1555 init_sigio_on_device (d); | |
| 1556 request_sigio_on_device (d); | |
| 1557 } | |
| 1558 #endif | |
| 1559 } | |
| 1560 | |
| 1561 void | |
| 1562 init_one_console (struct console *con) | |
| 1563 { | |
| 1564 Lisp_Object devcons; | |
| 1565 | |
| 1566 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1567 { | |
| 1568 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1569 | |
| 1570 init_one_device (d); | |
| 1571 } | |
| 1572 } | |
| 1573 | |
| 1574 void | |
| 1575 reinit_initial_console (void) | |
| 1576 { | |
| 1577 munge_process_groups (); | |
| 1578 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1579 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1580 init_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1581 } | |
| 1582 | |
| 1583 | |
| 1584 /* ------------------------------------------------------ */ | |
| 1585 /* Other TTY functions */ | |
| 1586 /* ------------------------------------------------------ */ | |
| 1587 | |
| 1588 #ifdef HAVE_TTY | |
| 1589 | |
| 1590 #if 0 /* not currently used */ | |
| 1591 | |
| 1592 /* Return nonzero if safe to use tabs in output. | |
| 1593 At the time this is called, init_sys_modes has not been done yet. */ | |
| 1594 | |
| 1595 int | |
| 2340 | 1596 tabs_safe_p (struct device *USED_IF_TTY (d)) |
| 428 | 1597 { |
| 1598 #ifdef HAVE_TTY | |
| 1599 if (DEVICE_TTY_P (d)) | |
| 1600 { | |
| 1601 struct emacs_tty tty; | |
| 1602 | |
| 430 | 1603 emacs_get_tty (DEVICE_INFD (d), &tty); |
| 428 | 1604 return EMACS_TTY_TABS_OK (&tty); |
| 1605 } | |
| 1606 #endif | |
| 1607 return 1; | |
| 1608 } | |
| 1609 | |
| 1610 #endif /* 0 */ | |
| 1611 | |
| 1612 /* Get terminal size from system. | |
| 1613 Store number of lines into *heightp and width into *widthp. | |
| 1614 If zero or a negative number is stored, the value is not valid. */ | |
| 1615 | |
| 1616 void | |
| 1617 get_tty_device_size (struct device *d, int *widthp, int *heightp) | |
| 1618 { | |
| 1619 int input_fd = DEVICE_INFD (d); | |
| 1620 | |
| 1621 assert (DEVICE_TTY_P (d)); | |
| 1622 | |
| 1623 #ifdef TIOCGWINSZ | |
| 1624 { | |
| 1625 /* BSD-style. */ | |
| 1626 struct winsize size; | |
| 1627 | |
| 1628 if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
| 1629 *widthp = *heightp = 0; | |
| 1630 else | |
| 1631 { | |
| 1632 *widthp = size.ws_col; | |
| 1633 *heightp = size.ws_row; | |
| 1634 } | |
| 1635 } | |
| 1636 #elif defined TIOCGSIZE | |
| 1637 { | |
| 1638 /* SunOS - style. */ | |
| 1639 struct ttysize size; | |
| 1640 | |
| 1641 if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
| 1642 *widthp = *heightp = 0; | |
| 1643 else | |
| 1644 { | |
| 1645 *widthp = size.ts_cols; | |
| 1646 *heightp = size.ts_lines; | |
| 1647 } | |
| 1648 } | |
| 1649 #else /* system doesn't know size */ | |
| 1650 | |
| 1651 *widthp = 0; | |
| 1652 *heightp = 0; | |
| 1653 | |
| 1654 #endif /* not !TIOCGWINSZ */ | |
| 1655 } | |
| 1656 | |
| 1657 #endif /* HAVE_TTY */ | |
| 1658 | |
| 1659 | |
| 1660 /* ------------------------------------------------------ */ | |
| 1661 /* Is device 8 bit ? */ | |
| 1662 /* ------------------------------------------------------ */ | |
| 1663 | |
| 1664 #ifdef HAVE_TTY | |
| 1665 | |
| 1666 int | |
| 1667 eight_bit_tty (struct device *d) | |
| 1668 { | |
| 1669 struct emacs_tty s; | |
| 1670 int input_fd; | |
| 1671 int eight_bit = 0; | |
| 1672 | |
| 1673 assert (DEVICE_TTY_P (d)); | |
| 1674 input_fd = DEVICE_INFD (d); | |
| 1675 | |
| 430 | 1676 emacs_get_tty (input_fd, &s); |
| 428 | 1677 |
| 1678 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1679 eight_bit = (s.main.c_cflag & CSIZE) == CS8; | |
| 1680 #else | |
| 1681 eight_bit = 0; /* I don't know how to do it */ | |
| 1682 #endif | |
| 1683 return eight_bit; | |
| 1684 } | |
| 1685 | |
| 1686 #endif /* HAVE_TTY */ | |
| 1687 | |
| 1688 | |
| 1689 /* ------------------------------------------------------ */ | |
| 1690 /* Resetting a device */ | |
| 1691 /* ------------------------------------------------------ */ | |
| 1692 | |
| 1693 #ifdef HAVE_TTY | |
| 1694 | |
| 1695 /* Prepare the terminal for exiting Emacs; move the cursor to the | |
| 1696 bottom of the frame, turn off interrupt-driven I/O, etc. */ | |
| 1697 static void | |
| 1698 tty_reset_sys_modes_on_device (struct device *d) | |
| 1699 { | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1700 #if defined (BSD) |
| 2286 | 1701 int output_fd; |
| 1702 #endif | |
| 1703 int input_fd; | |
| 428 | 1704 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1705 | |
| 1706 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
|
1707 #if defined (BSD) |
| 428 | 1708 output_fd = CONSOLE_TTY_DATA (con)->outfd; |
| 2286 | 1709 #endif |
| 428 | 1710 |
| 1711 tty_redisplay_shutdown (con); | |
| 1712 /* reset_tty_modes() flushes the connection at its end. */ | |
| 1713 reset_tty_modes (con); | |
| 1714 | |
| 1715 #if defined (BSD) | |
| 1716 /* Avoid possible loss of output when changing terminal modes. */ | |
| 1717 fsync (output_fd); | |
| 1718 #endif | |
| 1719 | |
| 430 | 1720 while (emacs_set_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty, 0) |
| 428 | 1721 < 0 && errno == EINTR) |
| 1722 ; | |
| 1723 } | |
| 1724 | |
| 1725 #endif /* HAVE_TTY */ | |
| 1726 | |
| 1727 void | |
| 1728 reset_one_device (struct device *d) | |
| 1729 { | |
| 1730 #ifdef HAVE_TTY | |
| 1731 if (DEVICE_TTY_P (d)) | |
| 1732 tty_reset_sys_modes_on_device (d); | |
| 1733 else | |
| 1734 #endif | |
| 1735 if (DEVICE_STREAM_P (d)) | |
| 1736 fflush (CONSOLE_STREAM_DATA (XCONSOLE (DEVICE_CONSOLE (d)))->out); | |
| 1737 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1738 if (!DEVICE_STREAM_P (d)) | |
| 1739 { | |
| 1740 unrequest_sigio_on_device (d); | |
| 1741 reset_sigio_on_device (d); | |
| 1742 } | |
| 1743 #endif | |
| 1744 } | |
| 1745 | |
| 1746 void | |
| 1747 reset_one_console (struct console *con) | |
| 1748 { | |
| 1749 /* Note: this can be called during GC. */ | |
| 1750 Lisp_Object devcons; | |
| 1751 | |
| 1752 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1753 { | |
| 1754 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1755 | |
| 1756 reset_one_device (d); | |
| 1757 } | |
| 1758 } | |
| 1759 | |
| 1760 void | |
| 1761 reset_all_consoles (void) | |
| 1762 { | |
| 1763 /* Note: this can be called during GC. */ | |
| 1764 Lisp_Object concons; | |
| 1765 | |
| 1766 CONSOLE_LOOP (concons) | |
| 1767 { | |
| 1768 struct console *con = XCONSOLE (XCAR (concons)); | |
| 1769 | |
| 1770 reset_one_console (con); | |
| 1771 } | |
| 1772 | |
| 1773 unmunge_process_groups (); | |
| 1774 } | |
| 1775 | |
| 1776 void | |
| 1777 reset_initial_console (void) | |
| 1778 { | |
| 1779 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1780 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1781 reset_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1782 unmunge_process_groups (); | |
| 1783 } | |
| 1784 | |
| 1785 | |
| 1786 /************************************************************************/ | |
| 1787 /* limits of text/data segments */ | |
| 1788 /************************************************************************/ | |
| 1789 | |
| 801 | 1790 /* Need start_of_data() as much as possible now, for total_data_usage(); |
| 1791 but with PDUMP and WIN32_NATIVE, can't currently do it. */ | |
| 1330 | 1792 #if ! (defined (PDUMP) && defined (WIN32_NATIVE) && defined (SYSTEM_MALLOC)) |
| 428 | 1793 #define NEED_STARTS |
| 1794 #endif | |
| 1795 | |
| 1796 #ifdef NEED_STARTS | |
| 1797 /* Some systems that cannot dump also cannot implement these. */ | |
| 1798 | |
| 1799 /* | |
| 1800 * Return the address of the start of the text segment prior to | |
| 1801 * doing an unexec. After unexec the return value is undefined. | |
| 1802 * See crt0.c for further explanation and _start. | |
| 1803 * | |
| 1804 */ | |
| 1805 | |
| 801 | 1806 #if !defined (HAVE_TEXT_START) && !defined (PDUMP) |
| 440 | 1807 |
| 442 | 1808 EXTERN_C int _start (void); |
| 428 | 1809 |
| 1810 char * | |
| 1811 start_of_text (void) | |
| 1812 { | |
| 1813 #ifdef TEXT_START | |
| 442 | 1814 return (char *) TEXT_START; |
| 428 | 1815 #else |
| 442 | 1816 return (char *) _start; |
| 428 | 1817 #endif /* TEXT_START */ |
| 1818 } | |
| 440 | 1819 #endif /* !defined(HAVE_TEXT_START) && !defined(PDUMP) */ |
| 428 | 1820 |
| 1821 /* | |
| 1822 * Return the address of the start of the data segment prior to | |
| 1823 * doing an unexec. After unexec the return value is undefined. | |
| 442 | 1824 * See ecrt0.c for further information and definition of data_start. |
| 428 | 1825 * |
| 1826 * Apparently, on BSD systems this is etext at startup. On | |
| 1827 * USG systems (swapping) this is highly mmu dependent and | |
| 1828 * is also dependent on whether or not the program is running | |
| 1829 * with shared text. Generally there is a (possibly large) | |
| 1830 * gap between end of text and start of data with shared text. | |
| 1831 * | |
| 1832 * On Uniplus+ systems with shared text, data starts at a | |
| 1833 * fixed address. Each port (from a given oem) is generally | |
| 1834 * different, and the specific value of the start of data can | |
| 1835 * be obtained via the UniPlus+ specific "uvar" system call, | |
| 1836 * however the method outlined in crt0.c seems to be more portable. | |
| 1837 * | |
| 1838 * Probably what will have to happen when a USG unexec is available, | |
| 1839 * at least on UniPlus, is temacs will have to be made unshared so | |
| 1840 * that text and data are contiguous. Then once loadup is complete, | |
| 1841 * unexec will produce a shared executable where the data can be | |
| 1842 * at the normal shared text boundary and the startofdata variable | |
| 1843 * will be patched by unexec to the correct value. | |
| 1844 * | |
| 1845 */ | |
| 1846 | |
| 801 | 1847 #if defined (ORDINARY_LINK) && !defined (MINGW) |
| 428 | 1848 extern char **environ; |
| 1849 #endif | |
| 1850 | |
| 1851 void * | |
| 1852 start_of_data (void) | |
| 1853 { | |
| 1854 #ifdef DATA_START | |
| 1855 return ((char *) DATA_START); | |
| 1856 #else | |
| 452 | 1857 #if defined (ORDINARY_LINK) || defined(PDUMP) |
| 428 | 1858 /* |
| 1859 * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
| 1860 * data_start isn't defined. We take the address of environ, which | |
| 1861 * is known to live at or near the start of the system crt0.c, and | |
| 1862 * we don't sweat the handful of bytes that might lose. | |
| 1863 */ | |
| 442 | 1864 #if defined (HEAP_IN_DATA) && !defined(PDUMP) |
| 428 | 1865 extern char* static_heap_base; |
| 1866 if (!initialized) | |
| 1867 return static_heap_base; | |
| 1868 #endif | |
| 801 | 1869 return ((char *) &environ); |
| 428 | 1870 #else |
| 1871 extern int data_start; | |
| 1872 return ((char *) &data_start); | |
| 1873 #endif /* ORDINARY_LINK */ | |
| 1874 #endif /* DATA_START */ | |
| 1875 } | |
| 1330 | 1876 #endif /* NEED_STARTS aka !(PDUMP && WIN32_NATIVE && SYSTEM_MALLOC) */ |
| 428 | 1877 |
| 801 | 1878 extern void *minimum_address_seen; /* from xmalloc() */ |
| 1879 extern void *maximum_address_seen; /* from xmalloc() */ | |
| 1880 | |
| 1881 Bytecount | |
| 1882 total_data_usage (void) | |
| 1883 { | |
| 1884 #ifdef NEED_STARTS | |
| 1885 void *data_start = start_of_data (); | |
| 1886 #else | |
| 1887 void *data_start = minimum_address_seen; | |
| 1888 #endif | |
| 854 | 1889 |
| 1315 | 1890 #ifndef WIN32_ANY |
| 814 | 1891 void *data_end = sbrk (0); |
| 801 | 1892 #else |
| 1893 void *data_end = maximum_address_seen; | |
| 1894 #endif | |
| 1895 | |
| 1896 /* Sanity checking -- the min determined by malloc() should always be | |
| 1897 greater than data start determined by other means. We could do the | |
| 1898 same check on the max, except that things like rel-alloc might | |
| 1899 invalidate it. */ | |
| 1900 if (minimum_address_seen && | |
| 1901 (char *) minimum_address_seen < (char *) data_start) | |
| 1902 data_start = minimum_address_seen; | |
| 1903 | |
| 1904 if (data_end < data_start) /* Huh?????????? */ | |
| 1905 data_end = maximum_address_seen; | |
| 1906 | |
| 1907 /* #### Doesn't seem to give good results on Windows; values are much | |
| 1908 higher than actual memory usage. How to fix??? */ | |
| 1909 return (char *) data_end - (char *) data_start; | |
| 1910 } | |
| 1911 | |
| 428 | 1912 |
| 1913 /************************************************************************/ | |
| 1914 /* get the system name */ | |
| 1915 /************************************************************************/ | |
| 1916 | |
| 1917 /* init_system_name sets up the string for the Lisp function | |
| 1918 system-name to return. */ | |
| 1919 | |
| 1920 extern Lisp_Object Vsystem_name; | |
| 1921 | |
| 1922 void | |
| 1923 init_system_name (void) | |
| 1924 { | |
| 442 | 1925 #if defined (WIN32_NATIVE) |
| 771 | 1926 Extbyte hostname[MAX_XETCHAR_SIZE * (MAX_COMPUTERNAME_LENGTH + 1)]; |
| 1927 DWORD size = sizeof (hostname) / XETCHAR_SIZE; | |
| 1928 qxeGetComputerName (hostname, &size); | |
| 1929 Vsystem_name = build_tstr_string (hostname); | |
| 428 | 1930 #elif !defined (HAVE_GETHOSTNAME) |
| 1931 struct utsname uts; | |
| 1932 uname (&uts); | |
| 1933 Vsystem_name = build_string (uts.nodename); | |
| 1934 #else /* HAVE_GETHOSTNAME */ | |
| 647 | 1935 int hostname_size = 256; |
| 2367 | 1936 /* !!#### Needs review */ |
| 851 | 1937 char *hostname = (char *) ALLOCA (hostname_size); |
| 428 | 1938 |
| 1939 /* Try to get the host name; if the buffer is too short, try | |
| 1940 again. Apparently, the only indication gethostname gives of | |
| 1941 whether the buffer was large enough is the presence or absence | |
| 1942 of a '\0' in the string. Eech. */ | |
| 1943 for (;;) | |
| 1944 { | |
| 1945 gethostname (hostname, hostname_size - 1); | |
| 1946 hostname[hostname_size - 1] = '\0'; | |
| 1947 | |
| 1948 /* Was the buffer large enough for the '\0'? */ | |
| 647 | 1949 if ((int) strlen (hostname) < (hostname_size - 1)) |
| 428 | 1950 break; |
| 1951 | |
| 1952 hostname_size <<= 1; | |
| 2367 | 1953 /* !!#### Needs review */ |
| 851 | 1954 hostname = (char *) ALLOCA (hostname_size); |
| 428 | 1955 } |
| 558 | 1956 # if defined( HAVE_SOCKETS) |
| 428 | 1957 /* Turn the hostname into the official, fully-qualified hostname. |
| 1958 Don't do this if we're going to dump; this can confuse system | |
| 1959 libraries on some machines and make the dumped emacs core dump. */ | |
| 1960 if (initialized) | |
| 1961 if (!strchr (hostname, '.')) | |
| 1962 { | |
| 440 | 1963 # if !(defined(HAVE_GETADDRINFO) && defined(HAVE_GETNAMEINFO)) |
| 428 | 1964 struct hostent *hp = NULL; |
| 1965 int count; | |
| 440 | 1966 # ifdef TRY_AGAIN |
| 428 | 1967 for (count = 0; count < 10; count++) |
| 1968 { | |
| 1969 h_errno = 0; | |
| 440 | 1970 # endif |
| 428 | 1971 /* Some systems can't handle SIGALARM/SIGIO in gethostbyname(). */ |
| 1972 stop_interrupts (); | |
| 1973 hp = gethostbyname (hostname); | |
| 1974 start_interrupts (); | |
| 440 | 1975 # ifdef TRY_AGAIN |
| 428 | 1976 if (! (hp == 0 && h_errno == TRY_AGAIN)) |
| 1977 break; | |
| 1978 Fsleep_for (make_int (1)); | |
| 1979 } | |
| 440 | 1980 # endif |
| 428 | 1981 if (hp) |
| 1982 { | |
| 442 | 1983 const char *fqdn = (const char *) hp->h_name; |
| 428 | 1984 |
| 1985 if (!strchr (fqdn, '.')) | |
| 1986 { | |
| 1987 /* We still don't have a fully qualified domain name. | |
| 1988 Try to find one in the list of alternate names */ | |
| 1989 char **alias = hp->h_aliases; | |
| 1990 while (*alias && !strchr (*alias, '.')) | |
| 1991 alias++; | |
| 1992 if (*alias) | |
| 1993 fqdn = *alias; | |
| 1994 } | |
| 2367 | 1995 /* !!#### Needs review */ |
| 851 | 1996 hostname = (char *) ALLOCA (strlen (fqdn) + 1); |
| 428 | 1997 strcpy (hostname, fqdn); |
| 1998 } | |
| 440 | 1999 # else /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ |
| 2000 struct addrinfo hints, *res; | |
| 2001 | |
| 2002 xzero (hints); | |
| 2003 hints.ai_flags = AI_CANONNAME; | |
| 724 | 2004 #ifdef IPV6_CANONICALIZE |
| 440 | 2005 hints.ai_family = AF_UNSPEC; |
| 724 | 2006 #else |
| 2007 hints.ai_family = PF_INET; | |
| 2008 #endif | |
| 440 | 2009 hints.ai_socktype = SOCK_STREAM; |
| 2010 hints.ai_protocol = 0; | |
| 2011 if (!getaddrinfo (hostname, NULL, &hints, &res)) | |
| 2012 { | |
| 2367 | 2013 /* !!#### Needs review */ |
| 851 | 2014 hostname = (char *) ALLOCA (strlen (res->ai_canonname) + 1); |
| 440 | 2015 strcpy (hostname, res->ai_canonname); |
| 2016 | |
| 2017 freeaddrinfo (res); | |
| 2018 } | |
| 2019 # endif /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ | |
| 428 | 2020 } |
| 2021 # endif /* HAVE_SOCKETS */ | |
| 2022 Vsystem_name = build_string (hostname); | |
| 2023 #endif /* HAVE_GETHOSTNAME */ | |
| 2024 { | |
| 867 | 2025 Ibyte *p; |
| 428 | 2026 Bytecount i; |
| 2027 | |
| 2028 for (i = 0, p = XSTRING_DATA (Vsystem_name); | |
| 2029 i < XSTRING_LENGTH (Vsystem_name); | |
| 2030 i++, p++) | |
| 2031 { | |
| 2032 if (*p == ' ' || *p == '\t') | |
| 2033 *p = '-'; | |
| 2034 } | |
| 2035 } | |
| 2036 } | |
| 2037 | |
| 2038 | |
| 2039 /************************************************************************/ | |
| 2040 /* Emulation of select() */ | |
| 2041 /************************************************************************/ | |
| 2042 | |
| 2043 #ifndef HAVE_SELECT | |
| 2044 | |
| 2045 ERROR: XEmacs requires a working select(). | |
| 2046 | |
| 2047 #endif /* not HAVE_SELECT */ | |
| 2048 | |
| 2049 | |
| 2050 /************************************************************************/ | |
| 2051 /* Emulation of signal stuff */ | |
| 2052 /************************************************************************/ | |
| 2053 | |
| 2054 /* BSD 4.1 crap deleted. 4.2 was released in 1983, for God's sake! I | |
| 2055 can't imagine that anyone is actually running that OS any more. | |
| 2056 You can't use X under it (I think) because there's no select(). | |
| 2057 Anyway, the signal stuff has all been changed. If someone wants to | |
| 2058 get this stuff working again, look in the FSF Emacs sources. */ | |
| 2059 | |
| 2060 /* POSIX signals support - DJB */ | |
| 2061 | |
| 2062 #ifdef HAVE_SIGPROCMASK | |
| 2063 | |
| 2064 /* #### Is there any reason this is static global rather than local? */ | |
| 2065 static struct sigaction new_action, old_action; | |
| 2066 | |
| 2067 signal_handler_t | |
| 613 | 2068 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2069 { |
| 2070 #if 0 | |
| 2071 | |
| 2072 /* XEmacs works better if system calls are *not* restarted. | |
| 2073 This allows C-g to interrupt reads and writes, on most systems. | |
| 2074 | |
| 2075 #### Another possibility is to just longjmp() out of the signal | |
| 2076 handler. According to W.R. Stevens, this should be OK on all | |
| 2077 systems. However, I don't want to deal with the potential | |
| 2078 evil ramifications of this at this point. */ | |
| 2079 | |
| 2080 sigemptyset (&new_action.sa_mask); | |
| 2081 new_action.sa_handler = action; | |
| 2082 #if defined (SA_RESTART) | |
| 2083 /* Emacs mostly works better with restartable system services. If this | |
| 2084 * flag exists, we probably want to turn it on here. | |
| 2085 */ | |
| 2086 new_action.sa_flags = SA_RESTART; | |
| 2087 #else | |
| 2088 new_action.sa_flags = 0; | |
| 2089 #endif | |
| 2090 sigaction (signal_number, &new_action, &old_action); | |
| 2091 return (old_action.sa_handler); | |
| 2092 | |
| 2093 #else /* not 0 */ | |
| 2094 | |
| 2095 sigemptyset (&new_action.sa_mask); | |
| 2096 new_action.sa_handler = action; | |
| 2097 #if defined (SA_INTERRUPT) /* don't restart system calls, under SunOS */ | |
| 2098 new_action.sa_flags = SA_INTERRUPT; | |
| 2099 #else | |
| 2100 new_action.sa_flags = 0; | |
| 2101 #endif | |
| 2102 sigaction (signal_number, &new_action, &old_action); | |
| 2103 return (signal_handler_t) (old_action.sa_handler); | |
| 2104 | |
| 2105 #endif /* not 0 */ | |
| 2106 } | |
| 2107 | |
| 2108 #elif defined (HAVE_SIGBLOCK) | |
| 2109 | |
| 2110 /* We use sigvec() rather than signal() if we have it, because | |
| 2111 it lets us specify interruptible system calls. */ | |
| 2112 signal_handler_t | |
| 613 | 2113 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2114 { |
| 2115 struct sigvec vec, ovec; | |
| 2116 | |
| 2117 vec.sv_handler = action; | |
| 2118 vec.sv_mask = 0; | |
| 2119 #ifdef SV_INTERRUPT /* don't restart system calls */ | |
| 2120 vec.sv_flags = SV_INTERRUPT; | |
| 2121 #else | |
| 2122 vec.sv_flags = 0; | |
| 2123 #endif | |
| 2124 | |
| 2125 sigvec (signal_number, &vec, &ovec); | |
| 2126 | |
| 2127 return (ovec.sv_handler); | |
| 2128 } | |
| 2129 | |
| 2130 #endif /* HAVE_SIGBLOCK (HAVE_SIGPROCMASK) */ | |
| 2131 | |
| 2132 | |
| 2133 /************************************************************************/ | |
| 2134 /* Emulation of strerror() and errno support */ | |
| 2135 /************************************************************************/ | |
| 2136 | |
| 2137 #ifndef HAVE_STRERROR | |
| 2138 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
2139 #if !defined(__alpha) && !defined(MACH) && !defined(LINUX) && !defined(IRIX) && !defined(__NetBSD__) |
| 428 | 2140 /* Linux added here by Raymond L. Toy <toy@alydar.crd.ge.com> for XEmacs. */ |
| 2141 /* Irix added here by gparker@sni-usa.com for XEmacs. */ | |
| 2142 /* NetBSD added here by James R Grinter <jrg@doc.ic.ac.uk> for XEmacs */ | |
| 442 | 2143 extern const char *sys_errlist[]; |
| 428 | 2144 extern int sys_nerr; |
| 2145 #endif | |
| 2146 | |
| 2147 #ifdef __NetBSD__ | |
| 2148 extern char *sys_errlist[]; | |
| 2149 extern int sys_nerr; | |
| 2150 #endif | |
| 2151 | |
| 2152 | |
| 442 | 2153 const char * |
| 428 | 2154 strerror (int errnum) |
| 2155 { | |
| 2156 if (errnum >= 0 && errnum < sys_nerr) | |
| 2157 return sys_errlist[errnum]; | |
| 442 | 2158 return ((const char *) GETTEXT ("Unknown error")); |
| 428 | 2159 } |
| 2160 | |
| 2161 #endif /* ! HAVE_STRERROR */ | |
| 2162 | |
| 2163 | |
| 2164 /************************************************************************/ | |
| 2165 /* Encapsulations of system calls */ | |
| 2166 /************************************************************************/ | |
| 2167 | |
| 2168 /***************** low-level calls ****************/ | |
| 2169 | |
| 2170 /* | |
| 2171 * On USG systems the system calls are INTERRUPTIBLE by signals | |
| 2172 * that the user program has elected to catch. Thus the system call | |
| 2173 * must be retried in these cases. To handle this without massive | |
| 2174 * changes in the source code, we remap the standard system call names | |
| 2175 * to names for our own functions in sysdep.c that do the system call | |
| 2176 * with retries. Actually, for portability reasons, it is good | |
| 2177 * programming practice, as this example shows, to limit all actual | |
| 2178 * system calls to a single occurrence in the source. Sure, this | |
| 2179 * adds an extra level of function call overhead but it is almost | |
| 2180 * always negligible. Fred Fish, Unisoft Systems Inc. | |
| 2181 */ | |
| 2182 | |
| 2183 /* Ben sez: read Dick Gabriel's essay about the Worse Is Better | |
| 2184 approach to programming and its connection to the silly | |
| 2185 interruptible-system-call business. To find it, look on | |
| 2340 | 2186 Jamie's home page (http://www.jwz.org/doc/worse-is-better.html). */ |
| 428 | 2187 |
| 771 | 2188 #ifdef WIN32_NATIVE |
| 2189 | |
| 2190 static int | |
| 2191 underlying_open_1 (const Extbyte *path, int oflag, int mode) | |
| 2192 { | |
| 2193 if (XEUNICODE_P) | |
| 2194 return _wopen ((const wchar_t *) path, oflag, mode); | |
| 2195 else | |
| 2196 return _open (path, oflag, mode); | |
| 2197 } | |
| 2198 | |
| 2199 #endif /* WIN32_NATIVE */ | |
| 2200 | |
| 2367 | 2201 /* Just call open() with normal open() semantics, with some fixups for |
| 2202 problems under Windows. */ | |
| 771 | 2203 |
| 2204 static int | |
| 2205 underlying_open (const Extbyte *path, int oflag, int mode) | |
| 2206 { | |
| 2207 #ifdef WIN32_NATIVE | |
| 2208 { | |
| 2209 /* Try to open file without _O_CREAT, to be able to write to hidden | |
| 2210 and system files. Force all file handles to be | |
| 2211 non-inheritable. */ | |
| 2212 int res = underlying_open_1 (path, (oflag & ~_O_CREAT) | _O_NOINHERIT, | |
| 2213 mode); | |
| 2214 if (res >= 0) | |
| 2215 return res; | |
| 2216 return underlying_open_1 (path, oflag | _O_NOINHERIT, mode); | |
| 2217 } | |
| 2218 #else | |
| 2219 return open (path, oflag, mode); | |
| 2220 #endif /* WIN32_NATIVE */ | |
| 2221 } | |
| 2222 | |
| 2367 | 2223 static int |
| 2224 retry_open_1 (const Extbyte *path, int oflag, int mode) | |
| 428 | 2225 { |
| 440 | 2226 #ifdef INTERRUPTIBLE_OPEN |
| 428 | 2227 { |
| 2228 int rtnval; | |
| 771 | 2229 while ((rtnval = underlying_open (path, oflag, mode)) == -1 |
| 428 | 2230 && (errno == EINTR)) |
| 2231 DO_NOTHING; | |
| 2232 return rtnval; | |
| 2233 } | |
| 2234 #else | |
| 771 | 2235 return underlying_open (path, oflag, mode); |
| 428 | 2236 #endif |
| 2237 } | |
| 771 | 2238 |
| 2367 | 2239 /* A version of open() that retries when interrupted. Operates on |
| 2240 externally-encoded filenames. */ | |
| 2241 | |
| 2242 int XCDECL | |
| 2243 retry_open (const Extbyte *path, int oflag, ...) | |
| 2244 { | |
| 2245 int mode; | |
| 2246 va_list ap; | |
| 2247 | |
| 2248 va_start (ap, oflag); | |
| 2249 mode = va_arg (ap, int); | |
| 2250 va_end (ap); | |
| 2251 | |
| 2252 return retry_open_1 (path, oflag, mode); | |
| 2253 } | |
| 2254 | |
| 2255 #if defined (WIN32_NATIVE) && defined (WEXTTEXT_IS_WIDE) | |
| 2256 | |
| 2257 /* Like retry_open() but operate on Wexttext filenames. */ | |
| 2258 | |
| 2259 int XCDECL | |
| 2260 wext_retry_open (const Wexttext *path, int oflag, ...) | |
| 2261 { | |
| 2262 int mode; | |
| 2263 va_list ap; | |
| 2264 | |
| 2265 va_start (ap, oflag); | |
| 2266 mode = va_arg (ap, int); | |
| 2267 va_end (ap); | |
| 2268 | |
| 2269 if (!XEUNICODE_P) | |
| 2270 return retry_open_1 (WEXTTEXT_TO_MULTIBYTE (path), oflag, mode); | |
| 2271 else | |
| 2272 return retry_open_1 ((Extbyte *) path, oflag, mode); | |
| 2273 } | |
| 2274 | |
| 2275 #endif | |
| 2276 | |
| 771 | 2277 /* The basic external entry point to open(). Handles conversion to |
| 2278 external encoding, interruptions, etc. */ | |
| 2279 | |
| 872 | 2280 int XCDECL |
| 867 | 2281 qxe_open (const Ibyte *path, int oflag, ...) |
| 771 | 2282 { |
| 2283 Extbyte *pathout; | |
| 2284 int mode; | |
| 2285 va_list ap; | |
| 2286 | |
| 2287 va_start (ap, oflag); | |
| 2288 mode = va_arg (ap, int); | |
| 2289 va_end (ap); | |
| 2290 | |
| 2291 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2292 return retry_open (pathout, oflag, mode); | |
| 2293 } | |
| 2294 | |
| 2295 /* Like qxe_open, only when open() is interrupted by EINTR, check for | |
| 428 | 2296 QUIT. This allows the callers of this function to be interrupted |
| 2297 with C-g when, say, reading from named pipes. However, this should | |
| 1123 | 2298 be used with caution, as it can run random Lisp code (although it |
| 2299 cannot GC). | |
| 428 | 2300 |
| 2301 This function will not function as expected on systems where open() | |
| 2302 is not interrupted by C-g. However, the worst that can happen is | |
| 2303 the fallback to simple open(). */ | |
| 2304 int | |
| 867 | 2305 qxe_interruptible_open (const Ibyte *path, int oflag, int mode) |
| 428 | 2306 { |
| 2307 /* This function can GC */ | |
| 771 | 2308 Extbyte *pathout; |
| 2309 | |
| 2310 PATHNAME_CONVERT_OUT (path, pathout); | |
| 428 | 2311 |
| 442 | 2312 #ifdef WIN32_NATIVE |
| 440 | 2313 /* Make all handles non-inheritable */ |
| 2314 oflag |= _O_NOINHERIT; | |
| 2315 #endif | |
| 2316 | |
| 428 | 2317 for (;;) |
| 2318 { | |
| 771 | 2319 int rtnval = underlying_open (pathout, oflag, mode); |
| 428 | 2320 if (!(rtnval == -1 && errno == EINTR)) |
| 2321 return rtnval; | |
| 2322 /* open() was interrupted. Was QUIT responsible? */ | |
| 2323 QUIT; | |
| 2324 } | |
| 2325 } | |
| 2326 | |
| 2327 int | |
| 771 | 2328 retry_close (int filedes) |
| 428 | 2329 { |
| 2330 #ifdef INTERRUPTIBLE_CLOSE | |
| 2331 int did_retry = 0; | |
| 2332 REGISTER int rtnval; | |
| 2333 | |
| 2334 while ((rtnval = close (filedes)) == -1 | |
| 2335 && (errno == EINTR)) | |
| 2336 did_retry = 1; | |
| 2337 | |
| 2338 /* If close is interrupted SunOS 4.1 may or may not have closed the | |
| 2339 file descriptor. If it did the second close will fail with | |
| 2340 errno = EBADF. That means we have succeeded. */ | |
| 2341 if (rtnval == -1 && did_retry && errno == EBADF) | |
| 2342 return 0; | |
| 2343 | |
| 2344 return rtnval; | |
| 2345 #else | |
| 2346 return close (filedes); | |
| 2347 #endif | |
| 2348 } | |
| 771 | 2349 |
| 2350 static ssize_t | |
| 2351 retry_read_1 (int fildes, void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2352 { |
| 2353 ssize_t rtnval; | |
| 2354 | |
| 2355 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */ | |
| 2356 while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
| 2357 && (errno == EINTR)) | |
| 2358 { | |
| 2359 if (allow_quit) | |
| 853 | 2360 QUIT; |
| 428 | 2361 } |
| 2362 return rtnval; | |
| 2363 } | |
| 2364 | |
| 2365 ssize_t | |
| 771 | 2366 retry_read (int fildes, void *buf, size_t nbyte) |
| 428 | 2367 { |
| 771 | 2368 return retry_read_1 (fildes, buf, nbyte, 0); |
| 428 | 2369 } |
| 771 | 2370 |
| 2371 static ssize_t | |
| 2372 retry_write_1 (int fildes, const void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2373 { |
| 2374 ssize_t bytes_written = 0; | |
| 442 | 2375 const char *b = (const char *) buf; |
| 428 | 2376 |
| 2377 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */ | |
| 2378 while (nbyte > 0) | |
| 2379 { | |
| 2380 ssize_t rtnval = write (fildes, b, nbyte); | |
| 2381 | |
| 2382 if (allow_quit) | |
| 853 | 2383 QUIT; |
| 428 | 2384 |
| 2385 if (rtnval == -1) | |
| 2386 { | |
| 2387 if (errno == EINTR) | |
| 2388 continue; | |
| 2389 else | |
| 2390 return bytes_written ? bytes_written : -1; | |
| 2391 } | |
| 2392 b += rtnval; | |
| 2393 nbyte -= rtnval; | |
| 2394 bytes_written += rtnval; | |
| 2395 } | |
| 2396 return bytes_written; | |
| 2397 } | |
| 2398 | |
| 2399 ssize_t | |
| 771 | 2400 retry_write (int fildes, const void *buf, size_t nbyte) |
| 428 | 2401 { |
| 771 | 2402 return retry_write_1 (fildes, buf, nbyte, 0); |
| 428 | 2403 } |
| 771 | 2404 |
| 2405 /* Versions of read() and write() that allow quitting out of the actual | |
| 2406 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the | |
| 2407 signal handler) because that's way too losing. | |
| 2408 | |
| 2409 (#### Actually, longjmp()ing out of the signal handler may not be | |
| 2410 as losing as I thought. See qxe_reliable_signal() in sysdep.c.) */ | |
| 2411 | |
| 2412 Bytecount | |
| 2413 read_allowing_quit (int fildes, void *buf, Bytecount size) | |
| 2414 { | |
| 2415 QUIT; | |
| 2416 return retry_read_1 (fildes, buf, size, 1); | |
| 2417 } | |
| 2418 | |
| 2419 Bytecount | |
| 2420 write_allowing_quit (int fildes, const void *buf, Bytecount size) | |
| 2421 { | |
| 2422 QUIT; | |
| 2423 return retry_write_1 (fildes, buf, size, 1); | |
| 2424 } | |
| 428 | 2425 |
| 2426 | |
| 2427 /**************** stdio calls ****************/ | |
| 2428 | |
| 2429 /* There is at least some evidence that the stdio calls are interruptible | |
| 2430 just like the normal system calls, at least on some systems. In any | |
| 2431 case, it doesn't hurt to encapsulate them. */ | |
| 2432 | |
| 2433 /* #### Should also encapsulate fflush(). | |
| 2434 #### Should conceivably encapsulate getchar() etc. What a pain! */ | |
| 2435 | |
| 2436 FILE * | |
| 2367 | 2437 retry_fopen (const Extbyte *path, const Ascbyte *mode) |
| 428 | 2438 { |
| 771 | 2439 #ifdef WIN32_NATIVE |
| 2440 int fd; | |
| 2441 int oflag; | |
| 2367 | 2442 const Ascbyte *mode_save = mode; |
| 771 | 2443 |
| 2444 /* Force all file handles to be non-inheritable. This is necessary to | |
| 2445 ensure child processes don't unwittingly inherit handles that might | |
| 2446 prevent future file access. */ | |
| 2447 | |
| 2448 if (mode[0] == 'r') | |
| 2449 oflag = O_RDONLY; | |
| 2450 else if (mode[0] == 'w' || mode[0] == 'a') | |
| 2451 oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
| 2452 else | |
| 2453 return NULL; | |
| 2454 | |
| 2455 /* Only do simplistic option parsing. */ | |
| 2456 while (*++mode) | |
| 2457 if (mode[0] == '+') | |
| 2458 { | |
| 2459 oflag &= ~(O_RDONLY | O_WRONLY); | |
| 2460 oflag |= O_RDWR; | |
| 2461 } | |
| 2462 else if (mode[0] == 'b') | |
| 2463 { | |
| 2464 oflag &= ~O_TEXT; | |
| 2465 oflag |= O_BINARY; | |
| 2466 } | |
| 2467 else if (mode[0] == 't') | |
| 2468 { | |
| 2469 oflag &= ~O_BINARY; | |
| 2470 oflag |= O_TEXT; | |
| 2471 } | |
| 2472 else break; | |
| 2473 | |
| 2474 fd = underlying_open (path, oflag, 0644); | |
| 2475 if (fd < 0) | |
| 2476 return NULL; | |
| 2477 | |
| 2478 return _fdopen (fd, mode_save); | |
| 428 | 2479 #elif defined (INTERRUPTIBLE_OPEN) |
| 2480 { | |
| 2481 FILE *rtnval; | |
| 771 | 2482 while (!(rtnval = fopen (path, mode)) && (errno == EINTR)) |
| 428 | 2483 DO_NOTHING; |
| 2484 return rtnval; | |
| 2485 } | |
| 2486 #else | |
| 771 | 2487 return fopen (path, mode); |
| 2488 #endif /* defined (INTERRUPTIBLE_OPEN) */ | |
| 428 | 2489 } |
| 771 | 2490 |
| 2491 FILE * | |
| 2367 | 2492 qxe_fopen (const Ibyte *path, const Ascbyte *mode) |
| 771 | 2493 { |
| 2494 Extbyte *pathout; | |
| 2495 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2496 return retry_fopen (pathout, mode); | |
| 2497 } | |
| 2498 | |
| 428 | 2499 int |
| 771 | 2500 retry_fclose (FILE *stream) |
| 428 | 2501 { |
| 2502 #ifdef INTERRUPTIBLE_CLOSE | |
| 2503 int rtnval; | |
| 2504 | |
| 2505 while ((rtnval = fclose (stream)) == EOF | |
| 2506 && (errno == EINTR)) | |
| 2507 ; | |
| 2508 return rtnval; | |
| 2509 #else | |
| 2510 return fclose (stream); | |
| 2511 #endif | |
| 2512 } | |
| 771 | 2513 |
| 428 | 2514 size_t |
| 771 | 2515 retry_fread (void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2516 { |
| 2517 #ifdef INTERRUPTIBLE_IO | |
| 2518 size_t rtnval; | |
| 2519 size_t items_read = 0; | |
| 2520 char *b = (char *) ptr; | |
| 2521 | |
| 2522 while (nitem > 0) | |
| 2523 { | |
| 2524 rtnval = fread (b, size, nitem, stream); | |
| 2525 if (rtnval == 0) | |
| 2526 { | |
| 2527 if (ferror (stream) && errno == EINTR) | |
| 2528 continue; | |
| 2529 else | |
| 2530 return items_read; | |
| 2531 } | |
| 2532 b += size*rtnval; | |
| 2533 nitem -= rtnval; | |
| 2534 items_read += rtnval; | |
| 2535 } | |
| 2536 return (items_read); | |
| 2537 #else | |
| 2538 return fread (ptr, size, nitem, stream); | |
| 2539 #endif | |
| 2540 } | |
| 771 | 2541 |
| 428 | 2542 size_t |
| 771 | 2543 retry_fwrite (const void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2544 { |
| 2545 #ifdef INTERRUPTIBLE_IO | |
| 2546 size_t rtnval; | |
| 2547 size_t items_written = 0; | |
| 442 | 2548 const char *b = (const char *) ptr; |
| 428 | 2549 |
| 2550 while (nitem > 0) | |
| 2551 { | |
| 2552 rtnval = fwrite (b, size, nitem, stream); | |
| 2553 if (rtnval == 0) | |
| 2554 { | |
| 2555 if (ferror (stream) && errno == EINTR) | |
| 2556 continue; | |
| 2557 else | |
| 2558 return items_written; | |
| 2559 } | |
| 2560 b += size*rtnval; | |
| 2561 nitem -= rtnval; | |
| 2562 items_written += rtnval; | |
| 2563 } | |
| 2564 return (items_written); | |
| 2565 #else | |
| 2566 return fwrite (ptr, size, nitem, stream); | |
| 2567 #endif | |
| 2568 } | |
| 2569 | |
| 2570 /********************* directory calls *******************/ | |
| 2571 | |
| 2572 int | |
| 867 | 2573 qxe_chdir (const Ibyte *path) |
| 428 | 2574 { |
| 771 | 2575 Extbyte *pathout; |
| 2576 PATHNAME_CONVERT_OUT (path, pathout); | |
| 442 | 2577 #ifdef WIN32_NATIVE |
| 771 | 2578 if (XEUNICODE_P) |
| 2579 return _wchdir ((const wchar_t *) pathout); | |
| 2580 else | |
| 2581 return _chdir (pathout); | |
| 428 | 2582 #else |
| 771 | 2583 return chdir (pathout); |
| 428 | 2584 #endif |
| 2585 } | |
| 771 | 2586 |
| 2587 int | |
| 2340 | 2588 qxe_mkdir (const Ibyte *path, |
| 2589 #ifdef WIN32_NATIVE | |
| 2590 mode_t UNUSED (mode) | |
| 2591 #else | |
| 2592 mode_t mode | |
| 2593 #endif | |
| 2594 ) | |
| 771 | 2595 { |
| 2596 Extbyte *pathout; | |
| 2597 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2598 #ifdef WIN32_NATIVE | |
| 2599 if (XEUNICODE_P) | |
| 2600 return _wmkdir ((const wchar_t *) pathout); | |
| 2601 else | |
| 2602 return _mkdir (pathout); | |
| 2603 #else | |
| 2604 return mkdir (pathout, mode); | |
| 2605 #endif | |
| 2606 } | |
| 2607 | |
| 428 | 2608 DIR * |
| 867 | 2609 qxe_opendir (const Ibyte *filename) |
| 428 | 2610 { |
| 771 | 2611 #ifdef WIN32_NATIVE |
| 2612 return mswindows_opendir (filename); | |
| 2613 #else | |
| 428 | 2614 DIR *rtnval; |
| 771 | 2615 Extbyte *pathout; |
| 2616 PATHNAME_CONVERT_OUT (filename, pathout); | |
| 2617 | |
| 2618 while (!(rtnval = opendir (pathout)) | |
| 428 | 2619 && (errno == EINTR)) |
| 2620 ; | |
| 2621 return rtnval; | |
| 771 | 2622 #endif /* WIN32_NATIVE */ |
| 428 | 2623 } |
| 771 | 2624 |
| 428 | 2625 DIRENTRY * |
| 771 | 2626 qxe_readdir (DIR *dirp) |
| 428 | 2627 { |
| 771 | 2628 #ifdef WIN32_NATIVE |
| 2629 return mswindows_readdir (dirp); | |
| 2630 #else /* not WIN32_NATIVE */ | |
| 428 | 2631 DIRENTRY *rtnval; |
| 2632 | |
| 2633 /* Apparently setting errno is necessary on some systems? | |
| 2634 Maybe readdir() doesn't always set errno ?! */ | |
| 2635 while (!(errno = 0, rtnval = readdir (dirp)) | |
| 2636 && (errno == EINTR)) | |
| 2637 ; | |
| 2638 #ifndef MULE | |
| 2639 return rtnval; | |
| 2640 #else /* MULE */ | |
| 2641 if (rtnval == NULL) /* End of directory */ | |
| 2642 return NULL; | |
| 2643 { | |
| 442 | 2644 const Extbyte * const external_name = (const Extbyte *) rtnval->d_name; |
| 665 | 2645 Bytecount external_len = strlen (rtnval->d_name); |
| 867 | 2646 const Ibyte *internal_name; |
| 462 | 2647 Bytecount internal_len; |
| 513 | 2648 |
| 462 | 2649 TO_INTERNAL_FORMAT (DATA, (external_name, external_len), |
| 2650 ALLOCA, (internal_name, internal_len), | |
| 2651 Qfile_name); | |
| 2652 | |
| 2653 /* check for common case of ASCII filename */ | |
| 2654 if (internal_len == external_len && | |
| 2655 !memcmp (external_name, internal_name, internal_len)) | |
| 428 | 2656 return rtnval; |
| 2657 | |
| 2658 { /* Non-ASCII filename */ | |
| 867 | 2659 static Ibyte_dynarr *internal_DIRENTRY; |
| 428 | 2660 if (!internal_DIRENTRY) |
| 867 | 2661 internal_DIRENTRY = Dynarr_new (Ibyte); |
| 428 | 2662 else |
| 2663 Dynarr_reset (internal_DIRENTRY); | |
| 2664 | |
| 867 | 2665 Dynarr_add_many (internal_DIRENTRY, (Ibyte *) rtnval, |
| 428 | 2666 offsetof (DIRENTRY, d_name)); |
| 2667 | |
| 2668 | |
| 2669 Dynarr_add_many (internal_DIRENTRY, internal_name, internal_len); | |
| 444 | 2670 Dynarr_add (internal_DIRENTRY, '\0'); /* NUL-terminate */ |
| 428 | 2671 return (DIRENTRY *) Dynarr_atp (internal_DIRENTRY, 0); |
| 2672 } | |
| 2673 } | |
| 2674 #endif /* MULE */ | |
| 771 | 2675 #endif /* WIN32_NATIVE */ |
| 428 | 2676 } |
| 771 | 2677 |
| 428 | 2678 int |
| 771 | 2679 qxe_closedir (DIR *dirp) |
| 428 | 2680 { |
| 771 | 2681 #ifdef WIN32_NATIVE |
| 2682 return mswindows_closedir (dirp); | |
| 2683 #else /* not WIN32_NATIVE */ | |
| 428 | 2684 int rtnval; |
| 2685 | |
| 2686 while ((rtnval = closedir (dirp)) == -1 | |
| 2687 && (errno == EINTR)) | |
| 2688 ; | |
| 2689 return rtnval; | |
| 771 | 2690 #endif /* WIN32_NATIVE */ |
| 428 | 2691 } |
| 771 | 2692 |
| 428 | 2693 int |
| 867 | 2694 qxe_rmdir (const Ibyte *path) |
| 771 | 2695 { |
| 2696 Extbyte *pathout; | |
| 2697 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2698 #ifdef WIN32_NATIVE | |
| 2699 if (XEUNICODE_P) | |
| 2700 return _wrmdir ((const wchar_t *) pathout); | |
| 2701 else | |
| 2702 return _rmdir (pathout); | |
| 2703 #else | |
| 2704 return rmdir (pathout); | |
| 2705 #endif | |
| 2706 } | |
| 2707 | |
| 867 | 2708 Ibyte * |
| 771 | 2709 qxe_allocating_getcwd (void) |
| 428 | 2710 { |
| 771 | 2711 #ifdef HAVE_GETCWD |
| 2712 Bytecount cwdsize = 1024; | |
| 2713 Extbyte *cwd = xnew_array (Extbyte, cwdsize); | |
| 2714 | |
| 2715 /* Many getcwd()'s can take a NULL argument and malloc() the right amount | |
| 2716 of data, but this is non-standard. */ | |
| 2717 while (1) | |
| 2718 { | |
| 2719 #ifdef WIN32_NATIVE | |
| 2720 Extbyte *ret; | |
| 2721 | |
| 2722 if (XEUNICODE_P) | |
| 2723 ret = (Extbyte *) _wgetcwd ((wchar_t *) cwd, | |
| 2724 cwdsize / sizeof (wchar_t)); | |
| 2725 else | |
| 2726 ret = _getcwd (cwd, cwdsize); | |
| 2727 | |
| 2728 if (ret) | |
| 2729 { | |
| 867 | 2730 Ibyte *retin; |
| 771 | 2731 TSTR_TO_C_STRING_MALLOC (ret, retin); |
| 1726 | 2732 xfree (cwd, Extbyte *); |
| 771 | 2733 return retin; |
| 2734 } | |
| 2735 #else | |
| 2736 Extbyte *ret = getcwd (cwd, cwdsize); | |
| 2737 if (ret) | |
| 2738 { | |
| 867 | 2739 Ibyte *retin; |
| 771 | 2740 EXTERNAL_TO_C_STRING_MALLOC (ret, retin, Qfile_name); |
| 1726 | 2741 xfree (cwd, Extbyte *); |
| 771 | 2742 return retin; |
| 2743 } | |
| 2744 #endif /* WIN32_NATIVE */ | |
| 2745 | |
| 2746 if (errno == ERANGE) | |
| 2747 { | |
| 2748 cwdsize *= 2; | |
| 2749 XREALLOC_ARRAY (cwd, Extbyte, cwdsize); | |
| 2750 } | |
| 2751 else | |
| 2752 { | |
| 1726 | 2753 xfree (cwd, Extbyte *); |
| 771 | 2754 return NULL; |
| 2755 } | |
| 2756 } | |
| 2757 #else | |
| 2421 | 2758 Extbyte chingame_limitos_arbitrarios[PATH_MAX_EXTERNAL]; |
| 867 | 2759 Ibyte *ret2; |
| 771 | 2760 |
| 2761 if (!getwd (chingame_limitos_arbitrarios)) | |
| 2762 return 0; | |
| 2763 EXTERNAL_TO_C_STRING_MALLOC (chingame_limitos_arbitrarios, ret2, Qfile_name); | |
| 2764 return ret2; | |
| 2765 #endif /* HAVE_GETCWD */ | |
| 428 | 2766 } |
| 2767 | |
| 2768 /***************** file-information calls ******************/ | |
| 2769 | |
| 2770 int | |
| 867 | 2771 qxe_access (const Ibyte *path, int mode) |
| 428 | 2772 { |
| 771 | 2773 #ifdef WIN32_NATIVE |
| 2774 return mswindows_access (path, mode); | |
| 2775 #else /* not WIN32_NATIVE */ | |
| 2776 Extbyte *pathout; | |
| 2777 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2778 return access (pathout, mode); | |
| 2779 #endif /* WIN32_NATIVE */ | |
| 428 | 2780 } |
| 771 | 2781 |
| 2782 #if defined (HAVE_EACCESS) | |
| 428 | 2783 int |
| 867 | 2784 qxe_eaccess (const Ibyte *path, int mode) |
| 428 | 2785 { |
| 771 | 2786 Extbyte *pathout; |
| 2787 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2788 return eaccess (pathout, mode); | |
| 428 | 2789 } |
| 771 | 2790 #endif /* defined (HAVE_EACCESS) */ |
| 2791 | |
| 428 | 2792 int |
| 867 | 2793 qxe_lstat (const Ibyte *path, struct stat *buf) |
| 428 | 2794 { |
| 771 | 2795 /* if system does not have symbolic links, it does not have lstat. |
| 2796 In that case, use ordinary stat instead. */ | |
| 2797 #ifndef S_IFLNK | |
| 2798 return qxe_stat (path, buf); | |
| 2526 | 2799 #elif defined (WIN32_NATIVE) |
| 2800 if (mswindows_shortcuts_are_symlinks) | |
| 2801 { | |
| 2802 /* We want to resolve the directory component and leave the rest | |
| 2803 alone. */ | |
| 2804 Ibyte *dirend = find_end_of_directory_component (path, qxestrlen (path)); | |
| 2805 Bytecount len; | |
| 2806 | |
| 2807 if (dirend != path) | |
| 2808 { | |
| 2809 Ibyte *resdir; | |
| 2810 Ichar lastch; | |
| 2811 DECLARE_EISTRING (resname); | |
| 2812 DECLARE_EISTRING (dir); | |
| 2813 | |
| 2814 eicpy_raw (dir, path, dirend - path); | |
| 2815 PATHNAME_RESOLVE_LINKS (eidata (dir), resdir); | |
| 2816 eicpy_rawz (resname, resdir); | |
| 2817 lastch = eigetch_char (resname, eicharlen (resname) - 1); | |
| 2818 if (!IS_DIRECTORY_SEP (lastch)) | |
| 2819 eicat_ch (resname, '\\'); | |
| 2820 eicat_rawz (resname, dirend); | |
| 2821 path = eidata (resname); | |
| 2822 } | |
| 2823 | |
| 2824 /* However, if what we are trying to stat is a link, we need to add | |
| 2825 the .LNK so that the actual file is statted. */ | |
| 2826 len = qxestrlen (path); | |
| 2827 if (len > 4 && qxestrcasecmp_ascii (path + len - 4, ".LNK")) | |
| 2828 { | |
| 2829 DECLARE_EISTRING (name2); | |
| 2830 Ibyte *resolved; | |
| 2831 | |
| 2832 eicpy_rawz (name2, path); | |
| 2833 eicat_ascii (name2, ".LNK"); | |
| 2834 resolved = mswindows_read_link (eidata (name2)); | |
| 2835 if (resolved) | |
| 2836 { | |
| 2837 xfree (resolved, Ibyte *); | |
| 2838 return mswindows_stat (eidata (name2), buf); | |
| 2839 } | |
| 2840 } | |
| 2841 } | |
| 2842 | |
| 2843 return mswindows_stat (path, buf); | |
| 771 | 2844 #else |
| 2845 Extbyte *pathout; | |
| 2846 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2847 return lstat (pathout, buf); | |
| 2848 #endif | |
| 428 | 2849 } |
| 771 | 2850 |
| 2851 #if defined (HAVE_READLINK) | |
| 428 | 2852 int |
| 867 | 2853 qxe_readlink (const Ibyte *path, Ibyte *buf, size_t bufsiz) |
| 428 | 2854 { |
| 771 | 2855 int retval; |
| 2856 Extbyte *pathout; | |
| 2857 | |
| 2858 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2859 retval = readlink (pathout, (char *) buf, bufsiz); | |
| 2860 if (retval < 0) | |
| 2861 return retval; | |
| 2862 { | |
| 867 | 2863 Ibyte *intbuf; |
| 771 | 2864 Bytecount tamanho; |
| 2865 | |
| 2866 TO_INTERNAL_FORMAT (DATA, (buf, retval), | |
| 2867 ALLOCA, (intbuf, tamanho), Qfile_name); | |
| 2868 /* the man page says this function does not null-terminate */ | |
| 2869 if (tamanho >= (Bytecount) bufsiz) | |
| 2870 tamanho = bufsiz; | |
| 2871 memcpy (buf, intbuf, tamanho); | |
| 2872 return tamanho; | |
| 2873 } | |
| 428 | 2874 } |
| 771 | 2875 #endif /* defined (HAVE_READLINK) */ |
| 2876 | |
| 432 | 2877 int |
| 771 | 2878 qxe_fstat (int fd, struct stat *buf) |
| 432 | 2879 { |
| 442 | 2880 #ifdef WIN32_NATIVE |
| 2881 return mswindows_fstat (fd, buf); | |
| 2882 #else | |
| 432 | 2883 return fstat (fd, buf); |
| 771 | 2884 #endif /* WIN32_NATIVE */ |
| 432 | 2885 } |
| 2886 | |
| 428 | 2887 int |
| 867 | 2888 qxe_stat (const Ibyte *path, struct stat *buf) |
| 428 | 2889 { |
| 442 | 2890 #ifdef WIN32_NATIVE |
| 2526 | 2891 Ibyte *resolved; |
| 2892 PATHNAME_RESOLVE_LINKS (path, resolved); | |
| 2893 return mswindows_stat (resolved, buf); | |
| 771 | 2894 #else /* not WIN32_NATIVE */ |
| 2895 Extbyte *pathout; | |
| 2896 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2897 return stat (pathout, buf); | |
| 2898 #endif /* WIN32_NATIVE */ | |
| 428 | 2899 } |
| 2900 | |
| 771 | 2901 |
| 428 | 2902 /****************** file-manipulation calls *****************/ |
| 2903 | |
| 2904 int | |
| 867 | 2905 qxe_chmod (const Ibyte *path, mode_t mode) |
| 428 | 2906 { |
| 771 | 2907 Extbyte *pathout; |
| 2908 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2909 #ifdef WIN32_NATIVE | |
| 2910 if (XEUNICODE_P) | |
| 2911 return _wchmod ((const wchar_t *) pathout, mode); | |
| 2912 else | |
| 2913 return _chmod (pathout, mode); | |
| 2914 #else | |
| 2915 return chmod (pathout, mode); | |
| 2916 #endif | |
| 428 | 2917 } |
| 771 | 2918 |
| 2919 #if defined (HAVE_LINK) | |
| 428 | 2920 int |
| 2957 | 2921 qxe_link (const Ibyte *existing, const Ibyte *new_) |
| 428 | 2922 { |
| 771 | 2923 #ifdef WIN32_NATIVE |
| 2957 | 2924 return mswindows_link (existing, new_); |
| 771 | 2925 #else /* not WIN32_NATIVE */ |
| 2926 Extbyte *existingout, *newout; | |
| 2927 PATHNAME_CONVERT_OUT (existing, existingout); | |
| 2957 | 2928 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 2929 return link (existingout, newout); |
| 2930 #endif /* WIN32_NATIVE */ | |
| 428 | 2931 } |
| 771 | 2932 #endif /* defined (HAVE_LINK) */ |
| 2933 | |
| 428 | 2934 int |
| 2957 | 2935 qxe_rename (const Ibyte *old, const Ibyte *new_) |
| 428 | 2936 { |
| 442 | 2937 #ifdef WIN32_NATIVE |
| 2957 | 2938 return mswindows_rename (old, new_); |
| 771 | 2939 #else /* not WIN32_NATIVE */ |
| 2940 Extbyte *oldout, *newout; | |
| 2941 PATHNAME_CONVERT_OUT (old, oldout); | |
| 2957 | 2942 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 2943 return rename (oldout, newout); |
| 442 | 2944 #endif /* WIN32_NATIVE */ |
| 428 | 2945 } |
| 771 | 2946 |
| 2947 #if defined (HAVE_SYMLINK) | |
| 428 | 2948 int |
| 867 | 2949 qxe_symlink (const Ibyte *name1, const Ibyte *name2) |
| 428 | 2950 { |
| 771 | 2951 Extbyte *name1out, *name2out; |
| 2952 PATHNAME_CONVERT_OUT (name1, name1out); | |
| 2953 PATHNAME_CONVERT_OUT (name2, name2out); | |
| 2954 return symlink (name1out, name2out); | |
| 428 | 2955 } |
| 771 | 2956 #endif /* defined (HAVE_SYMLINK) */ |
| 2957 | |
| 428 | 2958 int |
| 867 | 2959 qxe_unlink (const Ibyte *path) |
| 428 | 2960 { |
| 771 | 2961 #ifdef WIN32_NATIVE |
| 2962 return mswindows_unlink (path); | |
| 2963 #else /* not WIN32_NATIVE */ | |
| 2964 Extbyte *pathout; | |
| 2965 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2966 return unlink (pathout); | |
| 2967 #endif /* WIN32_NATIVE */ | |
| 428 | 2968 } |
| 771 | 2969 |
| 2970 | |
| 2971 /****************** process calls *****************/ | |
| 2972 | |
| 428 | 2973 int |
| 867 | 2974 qxe_execve (const Ibyte *filename, Ibyte * const argv[], |
| 2975 Ibyte * const envp[]) | |
| 428 | 2976 { |
| 771 | 2977 int i, argc, envc; |
| 2978 Extbyte *pathext; | |
| 2979 Extbyte **new_argv; | |
| 2980 Extbyte **new_envp; | |
| 2981 | |
| 2982 PATHNAME_CONVERT_OUT (filename, pathext); | |
| 2983 | |
| 428 | 2984 for (argc = 0; argv[argc]; argc++) |
| 2985 ; | |
| 771 | 2986 new_argv = alloca_array (Extbyte *, argc + 1); |
| 428 | 2987 for (i = 0; i < argc; i++) |
| 771 | 2988 C_STRING_TO_EXTERNAL (argv[i], new_argv[i], Qnative); |
| 428 | 2989 new_argv[argc] = NULL; |
| 771 | 2990 |
| 2991 for (envc = 0; envp[envc]; envc++) | |
| 2992 ; | |
| 2993 new_envp = alloca_array (Extbyte *, envc + 1); | |
| 2994 for (i = 0; i < envc; i++) | |
| 2995 C_STRING_TO_EXTERNAL (envp[i], new_envp[i], Qnative); | |
| 2996 new_envp[envc] = NULL; | |
| 2997 | |
| 1318 | 2998 #if defined (WIN32_NATIVE) |
| 2999 if (XEUNICODE_P) | |
| 3000 return _wexecve ((const wchar_t *) pathext, | |
| 3001 (const wchar_t * const *) new_argv, | |
| 3002 (const wchar_t * const *) new_envp); | |
| 3003 #endif | |
| 771 | 3004 return execve (pathext, new_argv, new_envp); |
| 3005 } | |
| 3006 | |
| 3007 pid_t | |
| 3008 qxe_getpid (void) | |
| 3009 { | |
| 3010 #ifdef WIN32_NATIVE | |
| 3011 return abs (getpid ()); | |
| 3012 #else | |
| 3013 return getpid (); | |
| 3014 #endif | |
| 428 | 3015 } |
| 771 | 3016 |
| 3017 | |
| 3018 /****************** passwd calls *****************/ | |
| 3019 | |
| 3020 struct passwd cached_pwd; | |
| 3021 | |
| 3022 static struct passwd * | |
| 3023 copy_in_passwd (struct passwd *pwd) | |
| 3024 { | |
| 3025 if (!pwd) | |
| 3026 return NULL; | |
| 3027 | |
| 3028 if (cached_pwd.pw_name) | |
| 1726 | 3029 xfree (cached_pwd.pw_name, char *); |
| 771 | 3030 if (cached_pwd.pw_passwd) |
| 1726 | 3031 xfree (cached_pwd.pw_passwd, char *); |
| 771 | 3032 if (cached_pwd.pw_gecos) |
| 1726 | 3033 xfree (cached_pwd.pw_gecos, char *); |
| 771 | 3034 if (cached_pwd.pw_dir) |
| 1726 | 3035 xfree (cached_pwd.pw_dir, char *); |
| 771 | 3036 if (cached_pwd.pw_shell) |
| 1726 | 3037 xfree (cached_pwd.pw_shell, char *); |
| 771 | 3038 |
| 3039 cached_pwd = *pwd; | |
| 3040 if (cached_pwd.pw_name) | |
| 3041 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_name, | |
| 3042 C_STRING_MALLOC, cached_pwd.pw_name, Qnative); | |
| 3043 if (cached_pwd.pw_passwd) | |
| 3044 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_passwd, | |
| 3045 C_STRING_MALLOC, cached_pwd.pw_passwd, Qnative); | |
| 3046 if (cached_pwd.pw_gecos) | |
| 3047 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_gecos, | |
| 3048 C_STRING_MALLOC, cached_pwd.pw_gecos, Qnative); | |
| 3049 if (cached_pwd.pw_dir) | |
| 3050 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_dir, | |
| 3051 C_STRING_MALLOC, cached_pwd.pw_dir, Qfile_name); | |
| 3052 if (cached_pwd.pw_shell) | |
| 3053 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_shell, | |
| 3054 C_STRING_MALLOC, cached_pwd.pw_shell, Qfile_name); | |
| 3055 return &cached_pwd; | |
| 3056 } | |
| 3057 | |
| 3058 struct passwd * | |
| 867 | 3059 qxe_getpwnam (const Ibyte *name) |
| 771 | 3060 { |
| 3061 #ifdef WIN32_NATIVE | |
| 3062 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3063 return getpwnam (name); | |
| 3064 #else | |
| 3065 Extbyte *nameext; | |
| 3066 C_STRING_TO_EXTERNAL (name, nameext, Qnative); | |
| 3067 | |
| 3068 return copy_in_passwd (getpwnam (nameext)); | |
| 3069 #endif /* WIN32_NATIVE */ | |
| 3070 } | |
| 3071 | |
| 3072 struct passwd * | |
| 3073 qxe_getpwuid (uid_t uid) | |
| 3074 { | |
| 3075 #ifdef WIN32_NATIVE | |
| 3076 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3077 return getpwuid (uid); | |
| 3078 #else | |
| 3079 return copy_in_passwd (getpwuid (uid)); | |
| 3080 #endif /* WIN32_NATIVE */ | |
| 3081 } | |
| 3082 | |
| 3083 #ifndef WIN32_NATIVE | |
| 3084 | |
| 3085 struct passwd * | |
| 3086 qxe_getpwent (void) | |
| 3087 { | |
| 3088 /* No WIN32_NATIVE version of this. */ | |
| 3089 return copy_in_passwd (getpwent ()); | |
| 3090 } | |
| 3091 | |
| 3092 #endif /* not WIN32_NATIVE */ | |
| 3093 | |
| 3094 /****************** time calls *****************/ | |
| 3095 | |
| 867 | 3096 static Ibyte *ctime_static; |
| 3097 | |
| 3098 Ibyte * | |
| 771 | 3099 qxe_ctime (const time_t *t) |
| 3100 { | |
| 3101 Extbyte *str = (Extbyte *) ctime (t); | |
| 3102 if (!str) /* can happen on MS Windows */ | |
| 867 | 3103 return (Ibyte *) "Sun Jan 01 00:00:00 1970"; |
| 771 | 3104 if (ctime_static) |
| 1726 | 3105 xfree (ctime_static, Ibyte *); |
| 771 | 3106 EXTERNAL_TO_C_STRING_MALLOC (str, ctime_static, Qnative); |
| 3107 return ctime_static; | |
| 3108 } | |
| 428 | 3109 |
| 1204 | 3110 |
| 912 | 3111 /************************************************************************/ |
| 3112 /* Emulation of missing functions from wchar.h */ | |
| 3113 /************************************************************************/ | |
| 3114 | |
| 3115 #ifndef HAVE_WCHAR_H | |
| 3116 size_t | |
| 2367 | 3117 wcslen (const wchar_t *s) |
| 912 | 3118 { |
| 3700 | 3119 const wchar_t *p = s; |
| 3648 | 3120 if (s == NULL) return NULL; |
| 912 | 3121 |
| 3122 while (*p++) | |
| 3123 ; | |
| 3124 | |
| 3125 return p - s; | |
| 3126 } | |
| 3127 #endif | |
| 1204 | 3128 |
| 3129 /************************************************************************/ | |
| 3130 /* Emulation of missing functions from string.h */ | |
| 3131 /************************************************************************/ | |
| 3132 | |
| 3133 #ifndef HAVE_STRLWR | |
| 3134 char * | |
| 3135 strlwr (char *s) | |
| 3136 { | |
| 3700 | 3137 REGISTER char *c; |
| 3648 | 3138 if (s == NULL) return NULL; |
| 1271 | 3139 |
| 3140 for (c = s; *c; c++) | |
| 1204 | 3141 { |
| 1271 | 3142 *c = tolower (*c); |
| 1204 | 3143 } |
| 1271 | 3144 return s; |
| 1204 | 3145 } |
| 3146 #endif | |
| 3147 | |
| 1271 | 3148 #ifndef HAVE_STRUPR |
| 1204 | 3149 char * |
| 3150 strupr (char *s) | |
| 3151 { | |
| 1271 | 3152 REGISTER char *c; |
| 3153 | |
| 3154 for (c = s; *c; c++) | |
| 1204 | 3155 { |
| 1271 | 3156 *c = toupper (*c); |
| 1204 | 3157 } |
| 1271 | 3158 return s; |
| 1204 | 3159 } |
| 3160 #endif | |
| 912 | 3161 |
| 428 | 3162 |
| 3163 /************************************************************************/ | |
| 3164 /* Emulations of missing system calls */ | |
| 3165 /************************************************************************/ | |
| 3166 | |
| 3167 /***** (these are primarily required for USG, it seems) *****/ | |
| 3168 | |
| 3169 /* | |
| 3170 * Emulate rename using unlink/link. Note that this is | |
| 3171 * only partially correct. Also, doesn't enforce restriction | |
| 3172 * that files be of same type (regular->regular, dir->dir, etc). | |
| 3173 */ | |
| 3174 | |
| 3175 #ifndef HAVE_RENAME | |
| 3176 int | |
| 771 | 3177 rename (const Extbyte *from, const Extbyte *to) |
| 428 | 3178 { |
| 3179 if (access (from, 0) == 0) | |
| 3180 { | |
| 3181 unlink (to); | |
| 3182 if (link (from, to) == 0) | |
| 3183 if (unlink (from) == 0) | |
| 3184 return (0); | |
| 3185 } | |
| 3186 return (-1); | |
| 3187 } | |
| 3188 #endif /* HAVE_RENAME */ | |
| 3189 | |
| 3190 #ifdef HPUX | |
| 3191 #ifndef HAVE_PERROR | |
| 3192 | |
| 3193 /* HPUX curses library references perror, but as far as we know | |
| 3194 it won't be called. Anyway this definition will do for now. */ | |
| 3195 | |
| 3196 perror (void) | |
| 3197 { | |
| 3198 } | |
| 3199 | |
| 3200 #endif /* not HAVE_PERROR */ | |
| 3201 #endif /* HPUX */ | |
| 3202 | |
| 3203 #ifndef HAVE_DUP2 | |
| 3204 | |
| 3205 /* | |
| 3206 * Emulate BSD dup2. First close newd if it already exists. | |
| 3207 * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
| 3208 * until we are, then close the unsuccessful ones. | |
| 3209 */ | |
| 3210 | |
| 3211 int | |
| 3212 dup2 (int oldd, int newd) | |
| 3213 { | |
| 3214 int fd, ret; | |
| 3215 | |
| 771 | 3216 retry_close (newd); |
| 428 | 3217 |
| 3218 #ifdef F_DUPFD | |
| 3219 fd = fcntl (oldd, F_DUPFD, newd); | |
| 3220 if (fd != newd) | |
| 563 | 3221 signal_ferror_with_frob (Qfile_error, lisp_strerror (errno), |
| 3222 "can't dup2 (%i, %i)", oldd, newd); | |
| 428 | 3223 #else |
| 2957 | 3224 fd = dup (oldd); |
| 428 | 3225 if (fd == -1) |
| 3226 return -1; | |
| 2957 | 3227 if (fd == newd) |
| 3228 return newd; | |
| 3229 ret = dup2 (oldd, newd); | |
| 771 | 3230 retry_close (fd); |
| 428 | 3231 return ret; |
| 3232 #endif /* F_DUPFD */ | |
| 3233 } | |
| 3234 | |
| 3235 #endif /* not HAVE_DUP2 */ | |
| 3236 | |
| 3237 /* | |
| 3238 * Gettimeofday. Simulate as much as possible. Only accurate | |
| 3239 * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
| 3240 */ | |
| 3241 | |
| 3242 #if !defined (HAVE_GETTIMEOFDAY) | |
| 3243 | |
| 3244 int | |
| 3245 gettimeofday (struct timeval *tp, struct timezone *tzp) | |
| 3246 { | |
| 3247 extern long time (); | |
| 3248 | |
| 3249 tp->tv_sec = time ((long *)0); | |
| 3250 tp->tv_usec = 0; | |
| 3251 if (tzp != 0) | |
| 3252 tzp->tz_minuteswest = -1; | |
| 3253 return (0); | |
| 3254 } | |
| 3255 | |
| 3256 #endif /* !HAVE_GETTIMEOFDAY */ | |
| 3257 | |
| 3258 /* No need to encapsulate utime and utimes explicitly because all | |
| 3259 access to those functions goes through the following. */ | |
| 3260 | |
| 3261 int | |
| 2340 | 3262 set_file_times ( |
| 3263 #if defined (WIN32_NATIVE) || defined (HAVE_UTIME) || defined (HAVE_UTIMES) | |
| 3264 Lisp_Object path, EMACS_TIME atime, EMACS_TIME mtime | |
| 3265 #else | |
| 3266 Lisp_Object UNUSED (path), EMACS_TIME UNUSED (atime), | |
| 3267 EMACS_TIME UNUSED (mtime) | |
| 3268 #endif | |
| 3269 ) | |
| 428 | 3270 { |
| 592 | 3271 #if defined (WIN32_NATIVE) |
| 460 | 3272 struct utimbuf utb; |
| 3273 utb.actime = EMACS_SECS (atime); | |
| 3274 utb.modtime = EMACS_SECS (mtime); | |
| 592 | 3275 return mswindows_utime (path, &utb); |
| 3276 #elif defined (HAVE_UTIME) | |
| 3277 struct utimbuf utb; | |
| 3278 Extbyte *filename; | |
| 3279 utb.actime = EMACS_SECS (atime); | |
| 3280 utb.modtime = EMACS_SECS (mtime); | |
| 3281 LISP_STRING_TO_EXTERNAL (path, filename, Qfile_name); | |
| 460 | 3282 return utime (filename, &utb); |
| 3283 #elif defined (HAVE_UTIMES) | |
| 428 | 3284 struct timeval tv[2]; |
| 592 | 3285 Extbyte *filename; |
| 428 | 3286 tv[0] = atime; |
| 3287 tv[1] = mtime; | |
| 592 | 3288 LISP_STRING_TO_EXTERNAL (path, filename, Qfile_name); |
| 428 | 3289 return utimes (filename, tv); |
| 460 | 3290 #else |
| 3291 /* No file times setting function available. */ | |
| 3292 return -1; | |
| 3293 #endif | |
| 428 | 3294 } |
| 3295 | |
| 3296 /* */ | |
| 3297 | |
| 3298 static long ticks_per_second; | |
| 3299 static long orig_user_ticks, orig_system_ticks; | |
| 3300 EMACS_TIME orig_real_time; | |
| 3301 | |
| 3302 static int process_times_available; | |
| 3303 | |
| 3304 /* Return the relative user and system tick count. We try to | |
| 3305 maintain calculations in terms of integers as long as possible | |
| 3306 for increased accuracy. */ | |
| 3307 | |
| 3308 static int | |
| 2340 | 3309 get_process_times_1 ( |
| 3310 #if defined (CLOCKS_PER_SEC) || defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) | |
| 3311 long *user_ticks, long *system_ticks | |
| 3312 #else | |
| 3313 long *UNUSED (user_ticks), long *UNUSED (system_ticks) | |
| 3314 #endif | |
| 3315 ) | |
| 428 | 3316 { |
| 442 | 3317 #if defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) |
| 428 | 3318 /* We have the POSIX times() function available. */ |
| 777 | 3319 /* #### Perhaps we should just use a configure test for times()? */ |
| 428 | 3320 struct tms tttt; |
| 3321 times (&tttt); | |
| 3322 *user_ticks = (long) tttt.tms_utime; | |
| 3323 *system_ticks = (long) tttt.tms_stime; | |
| 3324 return 1; | |
| 3325 #elif defined (CLOCKS_PER_SEC) | |
| 3326 *user_ticks = (long) clock (); | |
| 3327 *system_ticks = 0; | |
| 3328 return 1; | |
| 3329 #else | |
| 3330 return 0; | |
| 3331 #endif | |
| 3332 } | |
| 3333 | |
| 3334 void | |
| 3335 init_process_times_very_early (void) | |
| 3336 { | |
| 3337 #if defined (_SC_CLK_TCK) | |
| 3338 ticks_per_second = sysconf (_SC_CLK_TCK); | |
| 3339 #elif defined (CLK_TCK) | |
| 3340 ticks_per_second = CLK_TCK; | |
| 3341 #elif defined (CLOCKS_PER_SEC) | |
| 3342 ticks_per_second = CLOCKS_PER_SEC; | |
| 3343 #endif | |
| 3344 | |
| 3345 process_times_available = get_process_times_1 (&orig_user_ticks, | |
| 3346 &orig_system_ticks); | |
| 3347 EMACS_GET_TIME (orig_real_time); | |
| 3348 } | |
| 3349 | |
| 3350 /* Return the user and system times used up by this process so far. */ | |
| 3351 void | |
| 3352 get_process_times (double *user_time, double *system_time, double *real_time) | |
| 3353 { | |
| 3354 EMACS_TIME curr_real_time; | |
| 3355 EMACS_TIME elapsed_time; | |
| 3356 long curr_user_ticks, curr_system_ticks; | |
| 3357 | |
| 3358 EMACS_GET_TIME (curr_real_time); | |
| 3359 EMACS_SUB_TIME (elapsed_time, curr_real_time, orig_real_time); | |
| 3360 *real_time = (EMACS_SECS (elapsed_time) | |
| 3361 + ((double) EMACS_USECS (elapsed_time)) / 1000000); | |
| 3362 if (get_process_times_1 (&curr_user_ticks, &curr_system_ticks)) | |
| 3363 { | |
| 3364 *user_time = (((double) (curr_user_ticks - orig_user_ticks)) | |
| 3365 / ticks_per_second); | |
| 3366 *system_time = (((double) (curr_system_ticks - orig_system_ticks)) | |
| 3367 / ticks_per_second); | |
| 3368 } | |
| 3369 else | |
| 3370 { | |
| 3371 /* A lame OS */ | |
| 3372 *user_time = *real_time; | |
| 3373 *system_time = 0; | |
| 3374 } | |
| 3375 } | |
| 3376 | |
| 3377 #ifndef HAVE_RANDOM | |
| 3378 #ifdef random | |
| 3379 #define HAVE_RANDOM | |
| 3380 #endif | |
| 3381 #endif | |
| 3382 | |
| 3383 /* Figure out how many bits the system's random number generator uses. | |
| 3384 `random' and `lrand48' are assumed to return 31 usable bits. | |
| 3385 BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
| 3386 so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
| 3387 | |
| 3388 #ifndef RAND_BITS | |
| 3389 # ifdef HAVE_RANDOM | |
| 3390 # define RAND_BITS 31 | |
| 3391 # else /* !HAVE_RANDOM */ | |
| 3392 # ifdef HAVE_LRAND48 | |
| 3393 # define RAND_BITS 31 | |
| 3394 # define random lrand48 | |
| 3395 # else /* !HAVE_LRAND48 */ | |
| 3396 # define RAND_BITS 15 | |
| 3397 # if RAND_MAX == 32767 | |
| 3398 # define random rand | |
| 3399 # else /* RAND_MAX != 32767 */ | |
| 3400 # if RAND_MAX == 2147483647 | |
| 3401 # define random() (rand () >> 16) | |
| 3402 # else /* RAND_MAX != 2147483647 */ | |
| 3403 # ifdef USG | |
| 3404 # define random rand | |
| 3405 # else | |
| 3406 # define random() (rand () >> 16) | |
| 3407 # endif /* !BSD */ | |
| 3408 # endif /* RAND_MAX != 2147483647 */ | |
| 3409 # endif /* RAND_MAX != 32767 */ | |
| 3410 # endif /* !HAVE_LRAND48 */ | |
| 3411 # endif /* !HAVE_RANDOM */ | |
| 3412 #endif /* !RAND_BITS */ | |
| 3413 | |
| 3414 void | |
| 3415 seed_random (long arg) | |
| 3416 { | |
| 3417 #ifdef HAVE_RANDOM | |
| 3418 srandom ((unsigned int)arg); | |
| 3419 #else | |
| 3420 # ifdef HAVE_LRAND48 | |
| 3421 srand48 (arg); | |
| 3422 # else | |
| 3423 srand ((unsigned int)arg); | |
| 3424 # endif | |
| 3425 #endif | |
| 1983 | 3426 #ifdef HAVE_BIGNUM |
| 3427 bignum_random_seed ((unsigned long) arg); | |
| 3428 #endif | |
| 428 | 3429 } |
| 3430 | |
| 3431 /* | |
| 3432 * Build a full Emacs-sized word out of whatever we've got. | |
| 3433 * This suffices even for a 64-bit architecture with a 15-bit rand. | |
| 3434 */ | |
| 3435 long | |
| 3436 get_random (void) | |
| 3437 { | |
| 3438 long val = random (); | |
| 2039 | 3439 #if INT_VALBITS > RAND_BITS |
| 428 | 3440 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3441 #if INT_VALBITS > 2*RAND_BITS |
| 428 | 3442 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3443 #if INT_VALBITS > 3*RAND_BITS |
| 428 | 3444 val = (val << RAND_BITS) ^ random (); |
| 2039 | 3445 #if INT_VALBITS > 4*RAND_BITS |
| 428 | 3446 val = (val << RAND_BITS) ^ random (); |
| 3447 #endif /* need at least 5 */ | |
| 3448 #endif /* need at least 4 */ | |
| 3449 #endif /* need at least 3 */ | |
| 3450 #endif /* need at least 2 */ | |
| 2039 | 3451 return val & (EMACS_INT) ((1UL << INT_VALBITS) - 1); |
| 428 | 3452 } |
| 3453 | |
| 3454 | |
| 3455 /************************************************************************/ | |
| 3456 /* Strings corresponding to defined signals */ | |
| 3457 /************************************************************************/ | |
| 3458 | |
| 2762 | 3459 #if (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) |
| 428 | 3460 |
| 442 | 3461 #if defined(WIN32_NATIVE) || defined(CYGWIN) |
| 3462 const char *sys_siglist[] = | |
| 428 | 3463 { |
| 771 | 3464 /* $$####begin-snarf */ |
| 428 | 3465 "bum signal!!", |
| 3466 "hangup", | |
| 3467 "interrupt", | |
| 3468 "quit", | |
| 3469 "illegal instruction", | |
| 3470 "trace trap", | |
| 3471 "iot instruction", | |
| 3472 "emt instruction", | |
| 3473 "floating point exception", | |
| 3474 "kill", | |
| 3475 "bus error", | |
| 3476 "segmentation violation", | |
| 3477 "bad argument to system call", | |
| 3478 "write on a pipe with no one to read it", | |
| 3479 "alarm clock", | |
| 3480 "software termination signal from kill", | |
| 3481 "status signal", | |
| 3482 "sendable stop signal not from tty", | |
| 3483 "stop signal from tty", | |
| 3484 "continue a stopped process", | |
| 3485 "child status has changed", | |
| 3486 "background read attempted from control tty", | |
| 3487 "background write attempted from control tty", | |
| 3488 "input record available at control tty", | |
| 3489 "exceeded CPU time limit", | |
| 3490 "exceeded file size limit" | |
| 771 | 3491 /* $$####end-snarf */ |
| 428 | 3492 }; |
| 3493 #endif | |
| 3494 | |
| 3495 #ifdef USG | |
| 3496 #ifdef AIX | |
| 442 | 3497 const char *sys_siglist[NSIG + 1] = |
| 428 | 3498 { |
| 3499 /* AIX has changed the signals a bit */ | |
| 863 | 3500 DEFER_GETTEXT ("bogus signal"), /* 0 */ |
| 3501 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */ | |
| 3502 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */ | |
| 3503 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */ | |
| 3504 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */ | |
| 3505 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */ | |
| 3506 DEFER_GETTEXT ("IOT instruction"), /* 6 SIGIOT */ | |
| 3507 DEFER_GETTEXT ("crash likely"), /* 7 SIGDANGER */ | |
| 3508 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */ | |
| 3509 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */ | |
| 3510 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */ | |
| 3511 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */ | |
| 3512 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */ | |
| 3513 DEFER_GETTEXT ("write on a pipe with no one to read it"), /* 13 SIGPIPE */ | |
| 3514 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */ | |
| 3515 DEFER_GETTEXT ("software termination signal"), /* 15 SIGTERM */ | |
| 3516 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */ | |
| 3517 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */ | |
| 3518 DEFER_GETTEXT ("death of a child"), /* 18 SIGCLD */ | |
| 3519 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */ | |
| 3520 DEFER_GETTEXT ("bogus signal"), /* 20 */ | |
| 3521 DEFER_GETTEXT ("bogus signal"), /* 21 */ | |
| 3522 DEFER_GETTEXT ("bogus signal"), /* 22 */ | |
| 3523 DEFER_GETTEXT ("bogus signal"), /* 23 */ | |
| 3524 DEFER_GETTEXT ("bogus signal"), /* 24 */ | |
| 3525 DEFER_GETTEXT ("LAN I/O interrupt"), /* 25 SIGAIO */ | |
| 3526 DEFER_GETTEXT ("PTY I/O interrupt"), /* 26 SIGPTY */ | |
| 3527 DEFER_GETTEXT ("I/O intervention required"), /* 27 SIGIOINT */ | |
| 771 | 3528 /* $$####end-snarf */ |
| 428 | 3529 0 |
| 3530 }; | |
| 3531 #else /* USG, not AIX */ | |
| 442 | 3532 const char *sys_siglist[NSIG + 1] = |
| 428 | 3533 { |
| 863 | 3534 DEFER_GETTEXT ("bogus signal"), /* 0 */ |
| 3535 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */ | |
| 3536 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */ | |
| 3537 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */ | |
| 3538 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */ | |
| 3539 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */ | |
| 3540 DEFER_GETTEXT ("IOT instruction"), /* 6 SIGIOT */ | |
| 3541 DEFER_GETTEXT ("EMT instruction"), /* 7 SIGEMT */ | |
| 3542 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */ | |
| 3543 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */ | |
| 3544 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */ | |
| 3545 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */ | |
| 3546 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */ | |
| 3547 DEFER_GETTEXT ("write on a pipe with no one to read it"), /* 13 SIGPIPE */ | |
| 3548 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */ | |
| 3549 DEFER_GETTEXT ("software termination signal"), /* 15 SIGTERM */ | |
| 3550 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */ | |
| 3551 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */ | |
| 3552 DEFER_GETTEXT ("death of a child"), /* 18 SIGCLD */ | |
| 3553 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */ | |
| 428 | 3554 #ifdef sun |
| 771 | 3555 "window size changed", /* 20 SIGWINCH */ |
| 3556 "urgent socket condition", /* 21 SIGURG */ | |
| 3557 "pollable event occurred", /* 22 SIGPOLL */ | |
| 3558 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ | |
| 3559 "user stop requested from tty", /* 24 SIGTSTP */ | |
| 3560 "stopped process has been continued", /* 25 SIGCONT */ | |
| 3561 "background tty read attempted", /* 26 SIGTTIN */ | |
| 3562 "background tty write attempted", /* 27 SIGTTOU */ | |
| 3563 "virtual timer expired", /* 28 SIGVTALRM */ | |
| 3564 "profiling timer expired", /* 29 SIGPROF */ | |
| 3565 "exceeded cpu limit", /* 30 SIGXCPU */ | |
| 3566 "exceeded file size limit", /* 31 SIGXFSZ */ | |
| 3567 "process's lwps are blocked", /* 32 SIGWAITING */ | |
| 3568 "special signal used by thread library", /* 33 SIGLWP */ | |
| 428 | 3569 #ifdef SIGFREEZE |
| 771 | 3570 "special signal used by CPR", /* 34 SIGFREEZE */ |
| 428 | 3571 #endif |
| 3572 #ifdef SIGTHAW | |
| 771 | 3573 "special signal used by CPR", /* 35 SIGTHAW */ |
| 428 | 3574 #endif |
| 3575 #endif /* sun */ | |
| 771 | 3576 /* $$####end-snarf */ |
| 428 | 3577 0 |
| 3578 }; | |
| 3579 #endif /* not AIX */ | |
| 3580 #endif /* USG */ | |
| 3581 | |
| 2762 | 3582 #endif /* (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) */ |
| 428 | 3583 |
| 3584 | |
| 3585 /************************************************************************/ | |
| 3586 /* Directory routines for systems that don't have them */ | |
| 3587 /************************************************************************/ | |
| 3588 | |
| 3589 #ifdef SYSV_SYSTEM_DIR | |
| 3590 | |
| 3591 #include <dirent.h> | |
| 3592 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3593 #if !defined(HAVE_CLOSEDIR) |
| 428 | 3594 int |
| 3595 closedir (DIR *dirp) /* stream from opendir */ | |
| 3596 { | |
| 3597 int rtnval; | |
| 3598 | |
| 771 | 3599 rtnval = retry_close (dirp->dd_fd); |
| 428 | 3600 |
| 3601 /* Some systems (like Solaris) allocate the buffer and the DIR all | |
| 3602 in one block. Why in the world are we freeing this ourselves | |
| 3603 anyway? */ | |
| 3604 #if ! (defined (sun) && defined (USG5_4)) | |
| 1726 | 3605 xfree (dirp->dd_buf, char *); /* directory block defined in <dirent.h> */ |
| 428 | 3606 #endif |
| 1726 | 3607 xfree (dirp, DIR *); |
| 428 | 3608 return (rtnval); |
| 3609 } | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3610 #endif /* not HAVE_CLOSEDIR */ |
| 428 | 3611 #endif /* SYSV_SYSTEM_DIR */ |
| 3612 | |
| 3613 #ifdef NONSYSTEM_DIR_LIBRARY | |
| 3614 | |
| 3615 DIR * | |
| 442 | 3616 opendir (const char *filename) /* name of directory */ |
| 428 | 3617 { |
| 3618 DIR *dirp; /* -> malloc'ed storage */ | |
| 3619 int fd; /* file descriptor for read */ | |
| 3620 struct stat sbuf; /* result of fstat */ | |
| 3621 | |
| 771 | 3622 fd = open (filename, O_RDONLY); |
| 428 | 3623 if (fd < 0) |
| 3624 return 0; | |
| 3625 | |
| 3626 if (fstat (fd, &sbuf) < 0 | |
| 3627 || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
| 3628 || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
| 3629 { | |
| 771 | 3630 retry_close (fd); |
| 428 | 3631 return 0; /* bad luck today */ |
| 3632 } | |
| 3633 | |
| 3634 dirp->dd_fd = fd; | |
| 3635 dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
| 3636 | |
| 3637 return dirp; | |
| 3638 } | |
| 3639 | |
| 3640 void | |
| 3641 closedir (DIR *dirp) /* stream from opendir */ | |
| 3642 { | |
| 771 | 3643 retry_close (dirp->dd_fd); |
| 1726 | 3644 xfree (dirp, DIR *); |
| 428 | 3645 } |
| 3646 | |
| 3647 | |
| 3648 #define DIRSIZ 14 | |
| 3649 struct olddir | |
| 3650 { | |
| 3651 ino_t od_ino; /* inode */ | |
| 3652 char od_name[DIRSIZ]; /* filename */ | |
| 3653 }; | |
| 3654 | |
| 3655 static struct direct dir_static; /* simulated directory contents */ | |
| 3656 | |
| 3657 /* ARGUSED */ | |
| 3658 struct direct * | |
| 3659 readdir (DIR *dirp) /* stream from opendir */ | |
| 3660 { | |
| 3661 struct olddir *dp; /* -> directory data */ | |
| 3662 | |
| 3663 for (; ;) | |
| 3664 { | |
| 3665 if (dirp->dd_loc >= dirp->dd_size) | |
| 3666 dirp->dd_loc = dirp->dd_size = 0; | |
| 3667 | |
| 3668 if (dirp->dd_size == 0 /* refill buffer */ | |
| 771 | 3669 && (dirp->dd_size = |
| 3670 retry_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
| 428 | 3671 return 0; |
| 3672 | |
| 3673 dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
| 3674 dirp->dd_loc += sizeof (struct olddir); | |
| 3675 | |
| 3676 if (dp->od_ino != 0) /* not deleted entry */ | |
| 3677 { | |
| 3678 dir_static.d_ino = dp->od_ino; | |
| 3679 strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
| 3680 dir_static.d_name[DIRSIZ] = '\0'; | |
| 3681 dir_static.d_namlen = strlen (dir_static.d_name); | |
| 3682 dir_static.d_reclen = sizeof (struct direct) | |
| 3683 - MAXNAMLEN + 3 | |
| 3684 + dir_static.d_namlen - dir_static.d_namlen % 4; | |
| 3685 return &dir_static; /* -> simulated structure */ | |
| 3686 } | |
| 3687 } | |
| 3688 } | |
| 3689 | |
| 3690 | |
| 3691 #endif /* NONSYSTEM_DIR_LIBRARY */ | |
| 3692 | |
| 3693 | |
| 3694 /* mkdir and rmdir functions, for systems which don't have them. */ | |
| 3695 | |
| 3696 #ifndef HAVE_MKDIR | |
| 3697 /* | |
| 3698 * Written by Robert Rother, Mariah Corporation, August 1985. | |
| 3699 * | |
| 3700 * If you want it, it's yours. All I ask in return is that if you | |
| 3701 * figure out how to do this in a Bourne Shell script you send me | |
| 3702 * a copy. | |
| 3703 * sdcsvax!rmr or rmr@uscd | |
| 3704 * | |
| 3705 * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
| 3706 * subroutine. 11Mar86; hoptoad!gnu | |
| 3707 * | |
| 3708 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
| 3709 * subroutine didn't return EEXIST. It does now. | |
| 3710 */ | |
| 3711 | |
| 3712 /* | |
| 3713 * Make a directory. | |
| 3714 */ | |
| 3715 #ifdef MKDIR_PROTOTYPE | |
| 3716 MKDIR_PROTOTYPE | |
| 3717 #else | |
| 3718 int | |
| 442 | 3719 mkdir (const char *dpath, int dmode) |
| 428 | 3720 #endif |
| 3721 { | |
| 3722 int cpid, status, fd; | |
| 3723 struct stat statbuf; | |
| 3724 | |
| 442 | 3725 if (stat (dpath, &statbuf) == 0) /* we do want stat() here */ |
| 428 | 3726 { |
| 3727 errno = EEXIST; /* Stat worked, so it already exists */ | |
| 3728 return -1; | |
| 3729 } | |
| 3730 | |
| 3731 /* If stat fails for a reason other than non-existence, return error */ | |
| 3732 if (errno != ENOENT) | |
| 3733 return -1; | |
| 3734 | |
| 3735 synch_process_alive = 1; | |
| 3736 switch (cpid = fork ()) | |
| 3737 { | |
| 3738 | |
| 3739 case -1: /* Error in fork() */ | |
| 3740 return -1; /* Errno is set already */ | |
| 3741 | |
| 3742 case 0: /* Child process */ | |
| 3743 { | |
| 3744 /* | |
| 3745 * Cheap hack to set mode of new directory. Since this | |
| 3746 * child process is going away anyway, we zap its umask. | |
| 3747 * ####, this won't suffice to set SUID, SGID, etc. on this | |
| 3748 * directory. Does anybody care? | |
| 3749 */ | |
| 3750 status = umask (0); /* Get current umask */ | |
| 3751 status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
| 771 | 3752 fd = open ("/dev/null", O_RDWR); |
| 428 | 3753 if (fd >= 0) |
| 3754 { | |
| 3755 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3756 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3757 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3758 } | |
| 3759 execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); | |
| 3760 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3761 } | |
| 3762 | |
| 3763 default: /* Parent process */ | |
| 3764 wait_for_termination (cpid); | |
| 3765 } | |
| 3766 | |
| 3767 if (synch_process_death != 0 || synch_process_retcode != 0) | |
| 3768 { | |
| 3769 errno = EIO; /* We don't know why, but */ | |
| 3770 return -1; /* /bin/mkdir failed */ | |
| 3771 } | |
| 3772 | |
| 3773 return 0; | |
| 3774 } | |
| 3775 #endif /* not HAVE_MKDIR */ | |
| 3776 | |
| 3777 #ifndef HAVE_RMDIR | |
| 3778 int | |
| 442 | 3779 rmdir (const char *dpath) |
| 428 | 3780 { |
| 3781 int cpid, status, fd; | |
| 3782 struct stat statbuf; | |
| 3783 | |
| 442 | 3784 if (stat (dpath, &statbuf) != 0) /* we do want stat() here */ |
| 428 | 3785 { |
| 3786 /* Stat just set errno. We don't have to */ | |
| 3787 return -1; | |
| 3788 } | |
| 3789 | |
| 3790 synch_process_alive = 1; | |
| 3791 switch (cpid = fork ()) | |
| 3792 { | |
| 3793 | |
| 3794 case -1: /* Error in fork() */ | |
| 3795 return (-1); /* Errno is set already */ | |
| 3796 | |
| 3797 case 0: /* Child process */ | |
| 771 | 3798 fd = open ("/dev/null", O_RDWR); |
| 428 | 3799 if (fd >= 0) |
| 3800 { | |
| 3801 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3802 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3803 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3804 } | |
| 3805 execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); | |
| 3806 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3807 | |
| 3808 default: /* Parent process */ | |
| 3809 wait_for_termination (cpid); | |
| 3810 } | |
| 3811 | |
| 3812 if (synch_process_death != 0 || | |
| 3813 synch_process_retcode != 0) | |
| 3814 { | |
| 3815 errno = EIO; /* We don't know why, but */ | |
| 3816 return -1; /* /bin/rmdir failed */ | |
| 3817 } | |
| 3818 | |
| 3819 return 0; | |
| 3820 } | |
| 3821 #endif /* !HAVE_RMDIR */ | |
| 3822 | |
| 3823 | |
| 3824 /************************************************************************/ | |
| 3825 /* Misc. SunOS crap */ | |
| 3826 /************************************************************************/ | |
| 3827 | |
| 3828 #ifdef USE_DL_STUBS | |
| 3829 | |
| 3830 /* These are included on Sunos 4.1 when we do not use shared libraries. | |
| 3831 X11 libraries may refer to these functions but (we hope) do not | |
| 3832 actually call them. */ | |
| 3833 | |
| 3834 void * | |
| 3835 dlopen (void) | |
| 3836 { | |
| 3837 return 0; | |
| 3838 } | |
| 3839 | |
| 3840 void * | |
| 3841 dlsym (void) | |
| 3842 { | |
| 3843 return 0; | |
| 3844 } | |
| 3845 | |
| 3846 int | |
| 3847 dlclose (void) | |
| 3848 { | |
| 3849 return -1; | |
| 3850 } | |
| 3851 | |
| 3852 #endif /* USE_DL_STUBS */ |