Mercurial > hg > xemacs-beta
annotate src/sysdep.c @ 5894:23178aa71f8b
Define ALIGNOF using C11 and C++11 operators.
See <CAHCOHQmG51R61KwGUNY7T5t9tXxzbyg=aGijUKYstbE+wL2-6Q@mail.gmail.com> in
xemacs-patches for more information.
| author | Jerry James <james@xemacs.org> |
|---|---|
| date | Mon, 20 Apr 2015 15:09:11 -0600 |
| parents | 4d7032d36975 |
| children | e2fae7783046 |
| rev | line source |
|---|---|
| 428 | 1 /* Interfaces to system-dependent kernel and library entries. |
|
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Added optional argument ID-FORMAT to file-attributes for GNU compatibility.
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2 Copyright (C) 1985-1988, 1992-1995, 2013 Free Software Foundation, Inc. |
| 428 | 3 Copyright (C) 1995 Tinker Systems. |
|
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4 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2010 Ben Wing. |
| 428 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
|
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8 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 9 under the terms of the GNU General Public License as published by the |
|
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10 Free Software Foundation, either version 3 of the License, or (at your |
|
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11 option) any later version. |
| 428 | 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 | |
|
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19 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 20 |
| 771 | 21 |
| 428 | 22 /* Synched up with: FSF 19.30 except for some Windows-NT crap. */ |
| 23 | |
| 771 | 24 /* Authorship: |
| 25 | |
| 26 Current primary author: Various | |
| 27 | |
| 28 Originally from FSF. Major changes at various times. | |
| 29 Substantially cleaned up by Ben Wing, Dec. 1994 / Jan. 1995. | |
| 30 SIGIO stuff ripped apart and redone by Ben Wing. (during 19.14 devel?) | |
| 31 Signal stuff totally redone by Ben Wing. (during 19.14 devel? that would | |
| 32 be Dec 1995 - Apr 1996.) | |
| 33 Controlling terminal stuff redone by Ben Wing for 19.13. | |
| 34 System call encapsulation stuff written by Ben Wing for 19.12. (1995) | |
| 35 Ripped up and redone avoiding preprocessor tricks Aug - Sep 2001 during | |
| 36 Mule-on-Windows development. | |
| 37 */ | |
| 428 | 38 |
| 39 #include <config.h> | |
| 40 #include "lisp.h" | |
| 41 | |
| 42 /* ------------------------------- */ | |
| 43 /* basic includes */ | |
| 44 /* ------------------------------- */ | |
| 45 | |
| 800 | 46 |
| 47 #include "buffer.h" | |
| 872 | 48 #include "device-impl.h" |
| 800 | 49 #include "events.h" |
| 50 #include "frame.h" | |
| 51 #include "process.h" | |
| 52 #include "redisplay.h" | |
| 53 #include "sysdep.h" | |
| 54 #include "window.h" | |
| 55 | |
| 428 | 56 #ifdef HAVE_TTY |
| 872 | 57 #include "console-tty-impl.h" |
| 428 | 58 #else |
| 59 #endif /* HAVE_TTY */ | |
| 60 | |
| 872 | 61 #include "console-stream-impl.h" |
| 442 | 62 #ifdef WIN32_NATIVE |
| 771 | 63 #include "syswindows.h" |
| 428 | 64 #endif |
| 65 | |
| 800 | 66 #include "sysdir.h" |
| 67 #include "sysfile.h" | |
| 68 #include "sysproc.h" | |
| 69 #include "syspwd.h" | |
| 859 | 70 #include "syssignal.h" |
| 800 | 71 #include "systime.h" |
| 72 #include "systty.h" | |
| 73 #include "syswait.h" | |
| 74 | |
| 75 #include <setjmp.h> | |
| 76 | |
| 77 | |
| 428 | 78 /* ------------------------------- */ |
| 79 /* TTY definitions */ | |
| 80 /* ------------------------------- */ | |
| 81 | |
| 82 #ifdef USG | |
| 83 #include <sys/utsname.h> | |
| 84 #endif /* USG */ | |
| 85 | |
| 86 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ | |
| 87 #ifndef LPASS8 | |
| 88 #define LPASS8 0 | |
| 89 #endif | |
| 90 | |
| 91 #ifndef HAVE_H_ERRNO | |
| 92 int h_errno; | |
| 93 #endif | |
| 94 | |
| 95 #ifdef HAVE_TTY | |
| 96 | |
| 97 static int baud_convert[] = | |
| 98 #ifdef BAUD_CONVERT | |
| 99 BAUD_CONVERT; | |
| 100 #else | |
| 101 { | |
| 102 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
| 103 1800, 2400, 4800, 9600, 19200, 38400 | |
| 104 }; | |
| 105 #endif | |
| 106 | |
| 107 #endif | |
| 108 | |
| 109 | |
| 110 /************************************************************************/ | |
| 111 /* subprocess control */ | |
| 112 /************************************************************************/ | |
| 113 | |
| 853 | 114 #ifdef NEED_SYNC_PROCESS_CODE |
| 115 | |
| 116 /* True iff we are about to fork off a synchronous process or if we | |
| 117 are waiting for it. */ | |
| 118 volatile int synch_process_alive; | |
| 119 | |
| 120 /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
| 121 const char *synch_process_death; | |
| 122 | |
| 123 /* If synch_process_death is zero, | |
| 124 this is exit code of synchronous subprocess. */ | |
| 125 int synch_process_retcode; | |
| 126 | |
| 127 #endif /* NEED_SYNC_PROCESS_CODE */ | |
| 128 | |
| 428 | 129 #ifdef HAVE_TTY |
| 130 | |
| 131 #ifdef SIGTSTP | |
| 132 | |
| 133 /* Arrange for character C to be read as the next input from | |
| 134 the terminal. */ | |
| 135 void | |
| 2311 | 136 stuff_char (struct console *con, |
| 137 #ifdef TIOCSTI | |
| 138 int c | |
| 139 #else | |
| 140 int UNUSED (c) | |
| 141 #endif | |
| 142 ) | |
| 428 | 143 { |
| 144 int input_fd; | |
| 145 | |
| 146 assert (CONSOLE_TTY_P (con)); | |
| 147 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
| 148 /* Should perhaps error if in batch mode */ | |
| 149 #ifdef TIOCSTI | |
| 150 ioctl (input_fd, TIOCSTI, &c); | |
| 151 #else /* no TIOCSTI */ | |
| 563 | 152 invalid_operation ("Cannot stuff terminal input characters in this version of Unix.", Qunbound); |
| 428 | 153 #endif /* no TIOCSTI */ |
| 154 } | |
| 155 | |
| 156 #endif /* SIGTSTP */ | |
| 157 | |
| 158 #endif /* HAVE_TTY */ | |
| 159 | |
| 160 void | |
| 2311 | 161 set_exclusive_use ( |
| 162 #ifdef FIOCLEX | |
| 163 int fd | |
| 164 #else | |
| 165 int UNUSED (fd) | |
| 166 #endif | |
| 167 ) | |
| 428 | 168 { |
| 169 #ifdef FIOCLEX | |
| 170 ioctl (fd, FIOCLEX, 0); | |
| 171 #endif | |
| 172 /* Ok to do nothing if this feature does not exist */ | |
| 173 } | |
| 174 | |
| 175 void | |
| 2340 | 176 set_descriptor_non_blocking ( |
| 177 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX) || defined (F_SETFL) | |
| 178 int fd | |
| 179 #else | |
| 180 int UNUSED (fd) | |
| 181 #endif | |
| 182 ) | |
| 428 | 183 { |
| 184 /* Stride people say it's a mystery why this is needed | |
| 185 as well as the O_NDELAY, but that it fails without this. */ | |
| 186 /* For AIX: Apparently need this for non-blocking reads on sockets. | |
| 187 It seems that O_NONBLOCK applies only to FIFOs? From | |
| 188 lowry@watson.ibm.com (Andy Lowry). */ | |
| 189 /* #### Should this be conditionalized on FIONBIO? */ | |
| 872 | 190 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX) |
|
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Allow building --without-tls on the Windows native platform
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191 #if !defined(WIN32_NATIVE) |
| 428 | 192 { |
| 193 int one = 1; | |
| 194 ioctl (fd, FIONBIO, &one); | |
| 195 } | |
| 196 #endif | |
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197 #endif |
| 428 | 198 |
| 199 #ifdef F_SETFL | |
| 200 fcntl (fd, F_SETFL, O_NONBLOCK); | |
| 201 #endif | |
| 202 } | |
| 203 | |
| 853 | 204 #ifdef NEED_SYNC_PROCESS_CODE /* #### Used only on super-ancient systems */ |
| 205 | |
| 206 static void | |
| 814 | 207 wait_for_termination (int pid) |
| 428 | 208 { |
| 209 /* #### With the new improved SIGCHLD handling stuff, there is much | |
| 210 less danger of race conditions and some of the comments below | |
| 211 don't apply. This should be updated. */ | |
| 212 | |
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Remove support for obsolete systems. See xemacs-patches message with ID
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213 #if defined (HAVE_WAITPID) |
| 428 | 214 /* Note that, whenever any subprocess terminates (asynch. or synch.), |
| 215 the SIGCHLD handler will be called and it will call wait(). Thus | |
| 216 we cannot just call wait() ourselves, and we can't block SIGCHLD | |
| 217 and then call wait(), because then if an asynch. process dies | |
| 218 while we're waiting for our synch. process, Emacs will never | |
| 219 notice that the asynch. process died. | |
| 220 | |
| 221 So, the general approach we take is to repeatedly block until a | |
| 222 signal arrives, and then check if our process died using kill | |
| 223 (pid, 0). (We could also check the value of `synch_process_alive', | |
| 224 since the SIGCHLD handler will reset that and we know that we're | |
| 225 only being called on synchronous processes, but this approach is | |
| 226 safer. I don't trust the proper delivery of SIGCHLD. | |
| 227 | |
| 228 Note also that we cannot use any form of waitpid(). A loop with | |
| 229 WNOHANG will chew up CPU time; better to use sleep(). A loop | |
| 230 without WNOWAIT will screw up the SIGCHLD handler (actually this | |
| 231 is not true, if you duplicate the exit-status-reaping code; see | |
| 232 below). A loop with WNOWAIT will result in a race condition if | |
| 233 the process terminates between the process-status check and the | |
| 234 call to waitpid(). */ | |
| 235 | |
| 236 /* Formerly, immediate_quit was set around this function call, but | |
| 237 that could lead to problems if the QUIT happened when SIGCHLD was | |
| 238 blocked -- it would remain blocked. Yet another reason why | |
| 239 immediate_quit is a bad idea. In any case, there is no reason to | |
| 240 resort to this because either the SIGIO or the SIGALRM will stop | |
| 241 the block in EMACS_WAIT_FOR_SIGNAL(). */ | |
| 242 | |
| 243 /* Apparently there are bugs on some systems with the second method | |
| 244 used below (the EMACS_BLOCK_SIGNAL method), whereby zombie | |
| 245 processes get left around. It appears in those cases that the | |
| 246 SIGCHLD handler is never getting invoked. It's not clear whether | |
| 247 this is an Emacs bug or a kernel bug or both: on HPUX this | |
| 248 problem is observed only with XEmacs, but under Solaris 2.4 all | |
| 249 sorts of different programs have problems with zombies. The | |
| 250 method we use here does not require a working SIGCHLD (but will | |
| 251 not break if it is working), and should be safe. */ | |
| 252 /* | |
| 253 We use waitpid(), contrary to the remarks above. There is no | |
| 254 race condition, because the three situations when sigchld_handler | |
| 255 is invoked should be handled OK: | |
| 256 | |
| 257 - handler invoked before waitpid(): In this case, subprocess | |
| 258 status will be set by sigchld_handler. waitpid() here will | |
| 259 return -1 with errno set to ECHILD, which is a valid exit | |
| 260 condition. | |
| 261 | |
| 262 - handler invoked during waitpid(): as above, except that errno | |
| 263 here will be set to EINTR. This will cause waitpid() to be | |
| 264 called again, and this time it will exit with ECHILD. | |
| 265 | |
| 266 - handler invoked after waitpid(): The following code will reap | |
| 267 the subprocess. In the handler, wait() will return -1 because | |
| 268 there is no child to reap, and the handler will exit without | |
| 269 modifying child subprocess status. */ | |
| 270 int ret, status; | |
| 271 | |
| 272 /* Because the SIGCHLD handler can potentially reap the synchronous | |
| 273 subprocess, we should take care of that. */ | |
| 274 | |
| 275 /* Will stay in the do loop as long as: | |
| 276 1. Process is alive | |
| 277 2. Ctrl-G is not pressed */ | |
| 278 do | |
| 279 { | |
| 280 QUIT; | |
| 281 ret = waitpid (pid, &status, 0); | |
| 282 /* waitpid returns 0 if the process is still alive. */ | |
| 283 } | |
| 284 while (ret == 0 || (ret == -1 && errno == EINTR)); | |
| 285 | |
| 286 if (ret == pid) /* Success */ | |
| 287 /* Set synch process globals. This is can also happen | |
| 288 in sigchld_handler, and that code is duplicated. */ | |
| 289 { | |
| 290 synch_process_alive = 0; | |
| 291 if (WIFEXITED (status)) | |
| 292 synch_process_retcode = WEXITSTATUS (status); | |
| 293 else if (WIFSIGNALED (status)) | |
| 294 synch_process_death = signal_name (WTERMSIG (status)); | |
| 295 } | |
| 296 /* On exiting the loop, ret will be -1, with errno set to ECHILD if | |
| 297 the child has already been reaped, e.g. in the signal handler. */ | |
| 298 | |
| 299 /* Otherwise, we've had some error condition here. | |
| 300 Per POSIX, the only other possibilities are: | |
| 301 - EFAULT (bus error accessing arg 2) or | |
| 302 - EINVAL (incorrect arguments), | |
| 303 which are both program bugs. | |
| 304 | |
| 305 Since implementations may add their own error indicators on top, | |
| 306 we ignore it by default. */ | |
| 307 #elif defined (EMACS_BLOCK_SIGNAL) && !defined (BROKEN_WAIT_FOR_SIGNAL) && defined (SIGCHLD) | |
| 308 while (1) | |
| 309 { | |
| 310 static int wait_debugging = 0; /* Set nonzero to make following | |
| 311 function work under dbx (at least for bsd). */ | |
| 312 QUIT; | |
| 313 if (wait_debugging) | |
| 314 return; | |
| 315 | |
| 316 EMACS_BLOCK_SIGNAL (SIGCHLD); | |
| 317 /* Block SIGCHLD from happening during this check, | |
| 318 to avoid race conditions. */ | |
| 319 if (kill (pid, 0) < 0) | |
| 320 { | |
| 321 EMACS_UNBLOCK_SIGNAL (SIGCHLD); | |
| 322 return; | |
| 323 } | |
| 324 else | |
| 325 /* WARNING: Whatever this macro does *must* not allow SIGCHLD | |
| 326 to happen between the time that it's reenabled and when we | |
| 327 begin to block. Otherwise we may end up blocking for a | |
| 328 signal that has already arrived and isn't coming again. | |
| 329 Can you say "race condition"? | |
| 330 | |
| 331 I assume that the system calls sigpause() or sigsuspend() | |
| 332 to provide this atomicness. If you're getting hangs in | |
| 333 sigpause()/sigsuspend(), then your OS doesn't implement | |
| 334 this properly (this applies under hpux9, for example). | |
| 335 Try defining BROKEN_WAIT_FOR_SIGNAL. */ | |
| 336 EMACS_WAIT_FOR_SIGNAL (SIGCHLD); | |
| 337 } | |
| 853 | 338 #else /* not HAVE_WAITPID and (not EMACS_BLOCK_SIGNAL or BROKEN_WAIT_FOR_SIGNAL) */ |
| 428 | 339 /* This approach is kind of cheesy but is guaranteed(?!) to work |
| 340 for all systems. */ | |
| 341 while (1) | |
| 342 { | |
| 343 QUIT; | |
| 344 if (kill (pid, 0) < 0) | |
| 345 return; | |
| 771 | 346 stop_interrupts (); |
| 347 sleep (1); | |
| 348 start_interrupts (); | |
| 428 | 349 } |
| 350 #endif /* OS features */ | |
| 351 } | |
| 352 | |
| 853 | 353 #endif /* NEED_SYNC_PROCESS_CODE */ |
| 428 | 354 |
| 355 /* | |
| 356 * flush any pending output | |
| 357 * (may flush input as well; it does not matter the way we use it) | |
| 358 */ | |
| 359 | |
| 360 void | |
| 2286 | 361 flush_pending_output ( |
| 362 #if !defined (HAVE_TERMIOS) && (defined (TCFLSH) || defined (TIOCFLUSH)) | |
| 363 int channel | |
| 364 #else | |
| 365 int UNUSED (channel) | |
| 366 #endif | |
| 367 ) | |
| 428 | 368 { |
| 369 #ifdef HAVE_TERMIOS | |
| 370 /* If we try this, we get hit with SIGTTIN, because | |
| 371 the child's tty belongs to the child's pgrp. */ | |
| 372 #elif defined (TCFLSH) | |
| 373 ioctl (channel, TCFLSH, 1); | |
| 374 #elif defined (TIOCFLUSH) | |
| 375 int zero = 0; | |
| 376 /* 3rd arg should be ignored | |
| 377 but some 4.2 kernels actually want the address of an int | |
| 378 and nonzero means something different. */ | |
| 379 ioctl (channel, TIOCFLUSH, &zero); | |
| 380 #endif | |
| 381 } | |
| 382 | |
| 442 | 383 #ifndef WIN32_NATIVE |
| 428 | 384 /* Set up the terminal at the other end of a pseudo-terminal that |
| 385 we will be controlling an inferior through. | |
| 386 It should not echo or do line-editing, since that is done | |
| 387 in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
| 388 | |
| 389 void | |
| 390 child_setup_tty (int out) | |
| 391 { | |
| 392 struct emacs_tty s; | |
| 430 | 393 emacs_get_tty (out, &s); |
| 428 | 394 |
| 395 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 396 assert (isatty(out)); | |
| 397 s.main.c_oflag |= OPOST; /* Enable output postprocessing */ | |
| 398 s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
| 513 | 399 |
| 400 { | |
| 401 /* Disable all output delays. */ | |
| 402 tcflag_t delay_mask = 0; | |
| 428 | 403 #ifdef NLDLY |
| 513 | 404 delay_mask |= NLDLY; |
| 405 #endif | |
| 406 #ifdef CRDLY | |
| 407 delay_mask |= CRDLY; | |
| 408 #endif | |
| 409 #ifdef TABDLY | |
| 410 delay_mask |= TABDLY; /* Also disables tab expansion (Posix). */ | |
| 411 #endif | |
| 412 #ifdef BSDLY | |
| 413 delay_mask |= BSDLY; | |
| 414 #endif | |
| 415 #ifdef VTDLY | |
| 416 delay_mask |= VTDLY; | |
| 428 | 417 #endif |
| 513 | 418 #ifdef FFDLY |
| 419 delay_mask |= FFDLY; | |
| 420 #endif | |
| 421 s.main.c_oflag &= ~delay_mask; | |
| 422 } | |
| 423 | |
| 424 #ifdef OXTABS | |
| 425 /* Posix defines the TAB3 value for TABDLY to mean: expand tabs to spaces. | |
| 426 On those systems tab expansion would be disabled by the above code. | |
| 427 BSD systems use an independent flag, OXTABS. */ | |
| 428 s.main.c_oflag &= ~OXTABS; /* Disable tab expansion */ | |
| 429 #endif | |
| 430 | |
| 428 | 431 s.main.c_lflag &= ~ECHO; /* Disable echo */ |
| 432 s.main.c_lflag |= ISIG; /* Enable signals */ | |
| 433 #ifdef IUCLC | |
| 434 s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
| 435 #endif | |
| 436 #ifdef OLCUC | |
| 437 s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ | |
| 438 #endif | |
| 513 | 439 |
| 428 | 440 #if defined (CSIZE) && defined (CS8) |
| 441 s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ | |
| 442 #endif | |
| 443 #ifdef ISTRIP | |
| 444 s.main.c_iflag &= ~ISTRIP; /* Don't strip 8th bit on input */ | |
| 445 #endif | |
| 446 #if 0 | |
| 447 /* Unnecessary as long as ICANON is set */ | |
| 448 s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ | |
| 449 s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
| 450 #endif /* 0 */ | |
| 451 | |
| 452 s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
| 453 s.main.c_cc[VEOF] = 04; /* ensure that EOF is Control-D */ | |
| 454 s.main.c_cc[VERASE] = _POSIX_VDISABLE; /* disable erase processing */ | |
| 455 s.main.c_cc[VKILL] = _POSIX_VDISABLE; /* disable kill processing */ | |
| 456 | |
| 457 #ifdef HPUX | |
| 458 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
| 459 #endif /* HPUX */ | |
| 460 | |
| 461 #ifdef AIX | |
| 462 #ifndef IBMR2AIX | |
| 463 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 464 s.main.c_line = 0; | |
| 465 s.main.c_iflag &= ~ASCEDIT; | |
| 466 #endif /* IBMR2AIX */ | |
| 467 /* Also, PTY overloads NUL and BREAK. | |
| 468 don't ignore break, but don't signal either, so it looks like NUL. | |
| 469 This really serves a purpose only if running in an XTERM window | |
| 470 or via TELNET or the like, but does no harm elsewhere. */ | |
| 471 s.main.c_iflag &= ~IGNBRK; | |
| 472 s.main.c_iflag &= ~BRKINT; | |
| 473 #endif /* AIX */ | |
| 474 #ifdef SIGNALS_VIA_CHARACTERS | |
| 475 /* TTY `special characters' are used in process_send_signal | |
| 476 so set them here to something useful. */ | |
| 477 s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
| 478 s.main.c_cc[VINTR] = 'C' &037; /* Control-C */ | |
| 479 s.main.c_cc[VSUSP] = 'Z' &037; /* Control-Z */ | |
| 480 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
| 481 /* TTY `special characters' work better as signals, so disable | |
| 482 character forms */ | |
| 483 s.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 484 s.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 485 s.main.c_cc[VSUSP] = _POSIX_VDISABLE; | |
| 486 s.main.c_lflag &= ~ISIG; | |
| 487 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
| 488 s.main.c_cc[VEOL] = _POSIX_VDISABLE; | |
| 489 #if defined (CBAUD) | |
| 440 | 490 /* <mdiers> #### This is not portable. ### |
| 428 | 491 POSIX does not specify CBAUD, and 4.4BSD does not have it. |
| 492 Instead, POSIX suggests to use cfset{i,o}speed(). | |
| 493 [cf. D. Lewine, POSIX Programmer's Guide, Chapter 8: Terminal | |
| 494 I/O, O'Reilly 1991] */ | |
| 495 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
| 496 #else | |
| 497 /* <mdiers> What to do upon failure? Just ignoring rc is probably | |
| 498 not acceptable, is it? */ | |
|
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Eliminate several compiler (clang) warnings.
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499 if (cfsetispeed (&s.main, B9600) == -1) |
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500 DO_NOTHING; /* ignore */ |
|
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Eliminate several compiler (clang) warnings.
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501 if (cfsetospeed (&s.main, B9600) == -1) |
|
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502 DO_NOTHING; /* ignore */ |
| 428 | 503 #endif /* defined (CBAUD) */ |
| 504 | |
| 505 #else /* not HAVE_TERMIO */ | |
| 506 | |
| 507 s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
| 508 | CBREAK | TANDEM); | |
| 509 s.main.sg_flags |= LPASS8; | |
| 510 s.main.sg_erase = 0377; | |
| 511 s.main.sg_kill = 0377; | |
| 512 s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ | |
| 513 | |
| 514 #endif /* not HAVE_TERMIO */ | |
| 430 | 515 emacs_set_tty (out, &s, 0); |
| 428 | 516 } |
| 442 | 517 #endif /* WIN32_NATIVE */ |
| 428 | 518 |
| 519 | |
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520 #if !defined (SIGTSTP) |
| 428 | 521 |
| 522 #define SIG_PARAM_TYPE int | |
| 523 | |
| 524 /* Record a signal code and the handler for it. */ | |
| 525 struct save_signal | |
| 526 { | |
| 527 int code; | |
| 872 | 528 RETSIGTYPE (XCDECL * handler) (SIG_PARAM_TYPE); |
| 428 | 529 }; |
| 530 | |
| 531 static void | |
| 532 save_signal_handlers (struct save_signal *saved_handlers) | |
| 533 { | |
| 534 while (saved_handlers->code) | |
| 535 { | |
| 536 saved_handlers->handler | |
| 872 | 537 = (RETSIGTYPE (XCDECL *) (SIG_PARAM_TYPE)) EMACS_SIGNAL (saved_handlers->code, SIG_IGN); |
| 428 | 538 saved_handlers++; |
| 539 } | |
| 540 } | |
| 541 | |
| 542 static void | |
| 543 restore_signal_handlers (struct save_signal *saved_handlers) | |
| 544 { | |
| 545 while (saved_handlers->code) | |
| 546 { | |
| 613 | 547 EMACS_SIGNAL (saved_handlers->code, saved_handlers->handler); |
| 428 | 548 saved_handlers++; |
| 549 } | |
| 550 } | |
| 551 | |
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552 /* Fork a subshell. */ |
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553 static void |
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554 sys_subshell (void) |
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555 { |
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556 Lisp_Object dir; |
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557 Ibyte *str = 0; |
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558 Bytecount len; |
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559 struct gcpro gcpro1; |
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560 Ibyte *sh = 0; |
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561 Extbyte *shext; |
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562 |
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563 /* Use our buffer's default directory for the subshell. */ |
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564 |
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565 /* Note: These calls are spread out to insure that the return values |
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566 of the calls (which may be newly-created strings) are properly |
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567 GC-protected. */ |
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568 |
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569 GCPRO1 (dir); |
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570 |
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571 dir = current_buffer->directory; |
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572 /* If the current dir has no terminating slash, we'll get undesirable |
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573 results, so put the slash back. */ |
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574 dir = Ffile_name_as_directory (dir); |
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575 dir = Funhandled_file_name_directory (dir); |
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576 dir = expand_and_dir_to_file (dir, Qnil); |
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577 |
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578 str = alloca_ibytes (XSTRING_LENGTH (dir) + 2); |
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579 len = XSTRING_LENGTH (dir); |
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580 memcpy (str, XSTRING_DATA (dir), len); |
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581 if (!IS_ANY_SEP (str[len - 1])) |
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582 str[len++] = DIRECTORY_SEP; |
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583 str[len] = 0; |
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584 |
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585 if (sh == 0) |
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586 sh = egetenv ("SHELL"); |
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587 if (sh == 0) |
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588 sh = (Ibyte *) "sh"; |
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589 |
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590 PATHNAME_CONVERT_OUT (sh, shext); |
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591 |
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592 UNGCPRO; |
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593 |
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594 #ifdef WIN32_NATIVE |
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595 |
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596 if (str) |
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597 qxe_chdir (str); |
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598 |
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599 /* Waits for process completion */ |
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600 if (XEUNICODE_P ? |
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601 _wspawnlp (_P_WAIT, (const wchar_t *) shext, |
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602 (const wchar_t *) shext, NULL) != 0 : |
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603 _spawnlp (_P_WAIT, shext, shext, NULL) != 0) |
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604 report_process_error ("Can't spawn subshell", Qunbound); |
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605 else |
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606 return; /* we're done, no need to wait for termination */ |
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607 |
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608 #else /* not WIN32_NATIVE */ |
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609 |
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610 { |
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611 int pid; |
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612 struct save_signal saved_handlers[5]; |
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613 |
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614 saved_handlers[0].code = SIGINT; |
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615 saved_handlers[1].code = SIGQUIT; |
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616 saved_handlers[2].code = SIGTERM; |
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617 #ifdef SIGIO |
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618 saved_handlers[3].code = SIGIO; |
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619 saved_handlers[4].code = 0; |
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620 #else |
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621 saved_handlers[3].code = 0; |
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622 #endif |
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623 |
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624 pid = fork (); |
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625 |
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626 if (pid == -1) |
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627 report_process_error ("Can't spawn subshell", Qunbound); |
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628 if (pid == 0) |
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629 { |
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630 if (str) |
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631 qxe_chdir (str); |
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632 |
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633 #if !defined (NO_SUBPROCESSES) |
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634 close_process_descs (); /* Close Emacs's pipes/ptys */ |
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635 #endif |
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636 |
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637 #ifdef SET_EMACS_PRIORITY |
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638 if (emacs_priority != 0) |
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639 nice (-emacs_priority); /* Give the new shell the default priority */ |
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640 #endif |
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641 |
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642 execlp (shext, shext, 0); |
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643 retry_write (1, "Can't execute subshell", 22); |
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644 _exit (1); |
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645 } |
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646 |
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647 save_signal_handlers (saved_handlers); |
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648 synch_process_alive = 1; |
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649 wait_for_termination (pid); |
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650 restore_signal_handlers (saved_handlers); |
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651 } |
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652 |
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653 #endif /* not WIN32_NATIVE */ |
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654 } |
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655 |
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656 #endif /* !defined (SIGTSTP) */ |
| 428 | 657 |
| 658 | |
| 659 | |
| 660 /* Suspend the Emacs process; give terminal to its superior. */ | |
| 661 void | |
| 662 sys_suspend (void) | |
| 663 { | |
| 664 #if defined (SIGTSTP) | |
| 665 { | |
| 666 int pgrp = EMACS_GET_PROCESS_GROUP (); | |
| 667 EMACS_KILLPG (pgrp, SIGTSTP); | |
| 668 } | |
| 669 | |
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parents:
3700
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670 #else /* No SIGTSTP */ |
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671 |
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672 /* On a system where suspending is not implemented, |
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673 instead fork a subshell and let it talk directly to the terminal |
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674 while we wait. */ |
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675 sys_subshell (); |
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676 |
| 428 | 677 #endif |
| 678 } | |
| 679 | |
| 680 /* Suspend a process if possible; give terminal to its superior. */ | |
| 681 void | |
| 2340 | 682 sys_suspend_process ( |
| 683 #ifdef SIGTSTP | |
| 684 int process | |
| 685 #else | |
| 686 int UNUSED (process) | |
| 687 #endif | |
| 688 ) | |
| 428 | 689 { |
| 690 /* I don't doubt that it is possible to suspend processes on | |
|
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parents:
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691 * VMS machines, but I don't know how to do it, so... |
| 428 | 692 */ |
| 693 #if defined (SIGTSTP) | |
| 694 kill(process, SIGTSTP); | |
| 695 #endif | |
| 696 } | |
| 697 | |
| 698 | |
| 699 /* Given FD, obtain pty buffer size. When no luck, a good guess is made, | |
| 442 | 700 so that the function works even when fd is not a pty. */ |
| 428 | 701 |
| 702 int | |
| 2340 | 703 get_pty_max_bytes ( |
| 704 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
| 705 int fd | |
| 706 #else | |
| 707 int UNUSED (fd) | |
| 708 #endif | |
| 709 ) | |
| 428 | 710 { |
| 442 | 711 /* DEC OSF 4.0 fpathconf returns 255, but xemacs hangs on long shell |
| 712 input lines if we return 253. 252 is OK!. So let's leave a bit | |
| 713 of slack for the newline that xemacs will insert, and for those | |
| 714 inevitable vendor off-by-one-or-two-or-three bugs. */ | |
| 715 #define MAX_CANON_SLACK 10 | |
| 716 #define SAFE_MAX_CANON (127 - MAX_CANON_SLACK) | |
| 428 | 717 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) |
| 442 | 718 { |
| 719 int max_canon = fpathconf (fd, _PC_MAX_CANON); | |
| 720 #ifdef __hpux__ | |
| 721 /* HP-UX 10.20 fpathconf returns 768, but this results in | |
| 722 truncated input lines, while 255 works. */ | |
| 723 if (max_canon > 255) max_canon = 255; | |
| 428 | 724 #endif |
| 442 | 725 return (max_canon < 0 ? SAFE_MAX_CANON : |
| 726 max_canon > SAFE_MAX_CANON ? max_canon - MAX_CANON_SLACK : | |
| 727 max_canon); | |
| 728 } | |
| 729 #elif defined (_POSIX_MAX_CANON) | |
| 730 return (_POSIX_MAX_CANON > SAFE_MAX_CANON ? | |
| 731 _POSIX_MAX_CANON - MAX_CANON_SLACK : | |
| 732 _POSIX_MAX_CANON); | |
| 733 #else | |
| 734 return SAFE_MAX_CANON; | |
| 735 #endif | |
| 428 | 736 } |
| 737 | |
| 738 /* Figure out the eof character for the FD. */ | |
| 739 | |
| 867 | 740 Ibyte |
| 428 | 741 get_eof_char (int fd) |
| 742 { | |
| 867 | 743 const Ibyte ctrl_d = (Ibyte) '\004'; |
| 428 | 744 |
| 745 if (!isatty (fd)) | |
| 746 return ctrl_d; | |
| 747 #ifdef HAVE_TERMIOS | |
| 748 { | |
| 749 struct termios t; | |
| 750 tcgetattr (fd, &t); | |
| 751 #if 0 | |
| 752 /* What is the following line designed to do??? -mrb */ | |
| 647 | 753 if ((int) strlen ((const char *) t.c_cc) < (VEOF + 1)) |
| 428 | 754 return ctrl_d; |
| 755 else | |
| 867 | 756 return (Ibyte) t.c_cc[VEOF]; |
| 428 | 757 #endif |
| 867 | 758 return t.c_cc[VEOF] == _POSIX_VDISABLE ? ctrl_d : (Ibyte) t.c_cc[VEOF]; |
| 428 | 759 } |
| 760 #else /* ! HAVE_TERMIOS */ | |
| 761 /* On Berkeley descendants, the following IOCTL's retrieve the | |
| 762 current control characters. */ | |
| 763 #if defined (TIOCGETC) | |
| 764 { | |
| 765 struct tchars c; | |
| 766 ioctl (fd, TIOCGETC, &c); | |
| 867 | 767 return (Ibyte) c.t_eofc; |
| 428 | 768 } |
| 769 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
| 770 /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
| 771 characters. */ | |
| 772 #ifdef TCGETA | |
| 773 { | |
| 774 struct termio t; | |
| 775 ioctl (fd, TCGETA, &t); | |
| 647 | 776 if ((int) strlen ((const char *) t.c_cc) < (VINTR + 1)) |
| 428 | 777 return ctrl_d; |
| 778 else | |
| 867 | 779 return (Ibyte) t.c_cc[VINTR]; |
| 428 | 780 } |
| 781 #else /* ! defined (TCGETA) */ | |
| 782 /* Rather than complain, we'll just guess ^D, which is what | |
| 783 * earlier emacsen always used. */ | |
| 784 return ctrl_d; | |
| 785 #endif /* ! defined (TCGETA) */ | |
| 786 #endif /* ! defined (TIOCGETC) */ | |
| 787 #endif /* ! defined (HAVE_TERMIOS) */ | |
| 788 } | |
| 789 | |
| 790 /* Set the logical window size associated with descriptor FD | |
| 791 to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
| 792 | |
| 793 int | |
| 2340 | 794 set_window_size ( |
| 795 #if defined (TIOCSWINSZ) || defined (TIOCSSIZE) | |
| 796 int fd, int height, int width | |
| 797 #else | |
| 798 int UNUSED (fd), int UNUSED (height), int UNUSED (width) | |
| 799 #endif | |
| 800 ) | |
| 428 | 801 { |
| 802 #ifdef TIOCSWINSZ | |
| 803 | |
| 804 /* BSD-style. */ | |
| 805 struct winsize size; | |
| 806 size.ws_row = height; | |
| 807 size.ws_col = width; | |
| 808 | |
| 809 if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
| 810 return 0; /* error */ | |
| 811 else | |
| 812 return 1; | |
| 813 | |
| 814 #elif defined (TIOCSSIZE) | |
| 815 | |
| 816 /* SunOS - style. */ | |
| 817 struct ttysize size; | |
| 818 size.ts_lines = height; | |
| 819 size.ts_cols = width; | |
| 820 | |
| 821 if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
| 822 return 0; | |
| 823 else | |
| 824 return 1; | |
| 825 #else | |
| 826 return -1; | |
| 827 #endif | |
| 828 } | |
| 829 | |
| 830 /* Set up the proper status flags for use of a pty. */ | |
| 831 | |
| 832 void | |
| 2340 | 833 setup_pty ( |
| 834 #ifdef TIOCPKT | |
| 835 int fd | |
| 836 #else | |
| 837 int UNUSED (fd) | |
| 838 #endif | |
| 839 ) | |
| 428 | 840 { |
| 841 #ifdef TIOCPKT | |
| 842 /* In some systems (Linux through 2.0.0, at least), packet mode doesn't | |
| 843 get cleared when a pty is closed, so we need to clear it here. | |
| 844 Linux pre2.0.13 contained an attempted fix for this (from Ted Ts'o, | |
| 845 tytso@mit.edu), but apparently it messed up rlogind and telnetd, so he | |
| 846 removed the fix in pre2.0.14. - dkindred@cs.cmu.edu | |
| 847 */ | |
| 848 { | |
| 849 int off = 0; | |
| 850 ioctl (fd, TIOCPKT, (char *)&off); | |
| 851 } | |
| 535 | 852 #endif /* TIOCPKT */ |
| 428 | 853 } |
| 854 | |
| 855 | |
| 856 /************************************************************************/ | |
| 857 /* TTY control */ | |
| 858 /************************************************************************/ | |
| 859 | |
| 860 /* ------------------------------------------------------ */ | |
| 861 /* get baud rate */ | |
| 862 /* ------------------------------------------------------ */ | |
| 863 | |
| 864 /* It really makes more sense for the baud-rate to be console-specific | |
| 865 and not device-specific, but it's (at least potentially) used for output | |
| 866 decisions. */ | |
| 867 | |
| 868 void | |
| 869 init_baud_rate (struct device *d) | |
| 870 { | |
| 871 if (DEVICE_WIN_P (d) || DEVICE_STREAM_P (d)) | |
| 872 { | |
| 873 DEVICE_BAUD_RATE (d) = 38400; | |
| 874 return; | |
| 875 } | |
| 876 | |
| 877 #ifdef HAVE_TTY | |
| 878 assert (DEVICE_TTY_P (d)); | |
| 879 { | |
| 647 | 880 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 428 | 881 int input_fd = CONSOLE_TTY_DATA (con)->infd; |
| 814 | 882 #ifdef HAVE_TERMIOS |
| 428 | 883 struct termios sg; |
| 884 | |
| 885 sg.c_cflag = B9600; | |
| 886 tcgetattr (input_fd, &sg); | |
| 887 DEVICE_TTY_DATA (d)->ospeed = cfgetospeed (&sg); | |
| 888 #elif defined (HAVE_TERMIO) | |
| 889 struct termio sg; | |
| 890 | |
| 891 sg.c_cflag = B9600; | |
| 892 # ifdef HAVE_TCATTR | |
| 893 tcgetattr (input_fd, &sg); | |
| 894 # else | |
| 895 ioctl (input_fd, TCGETA, &sg); | |
| 896 # endif | |
| 897 DEVICE_TTY_DATA (d)->ospeed = sg.c_cflag & CBAUD; | |
| 898 #else /* neither TERMIOS nor TERMIO */ | |
| 899 struct sgttyb sg; | |
| 900 | |
| 901 sg.sg_ospeed = B9600; | |
| 902 if (ioctl (input_fd, TIOCGETP, &sg) < 0) | |
| 2500 | 903 ABORT (); |
| 428 | 904 DEVICE_TTY_DATA (d)->ospeed = sg.sg_ospeed; |
| 905 #endif | |
| 906 } | |
| 907 | |
| 908 DEVICE_BAUD_RATE (d) = | |
| 909 (DEVICE_TTY_DATA (d)->ospeed < countof (baud_convert) | |
| 910 ? baud_convert[DEVICE_TTY_DATA (d)->ospeed] | |
| 911 : 9600); | |
| 912 | |
| 913 if (DEVICE_BAUD_RATE (d) == 0) | |
| 914 DEVICE_BAUD_RATE (d) = 1200; | |
| 915 #endif /* HAVE_TTY */ | |
| 916 } | |
| 917 | |
| 918 | |
| 919 /* ------------------------------------------------------ */ | |
| 920 /* SIGIO control */ | |
| 921 /* ------------------------------------------------------ */ | |
| 922 | |
| 853 | 923 #if defined (SIGIO) && !defined (BROKEN_SIGIO) |
| 428 | 924 |
| 925 static void | |
| 926 init_sigio_on_device (struct device *d) | |
| 927 { | |
| 928 int filedesc = DEVICE_INFD (d); | |
| 929 | |
| 930 #if defined (FIOSSAIOOWN) | |
| 931 { /* HPUX stuff */ | |
| 932 int owner = getpid (); | |
| 933 int ioctl_status; | |
| 934 if (DEVICE_TTY_P (d)) | |
| 935 { | |
| 936 ioctl_status = ioctl (filedesc, FIOGSAIOOWN, | |
| 937 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 938 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, &owner); | |
| 939 } | |
| 940 #ifdef HAVE_WINDOW_SYSTEM | |
| 941 else if (!DEVICE_STREAM_P (d)) | |
| 942 { | |
| 943 ioctl_status = ioctl (filedesc, SIOCGPGRP, | |
| 944 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 945 ioctl_status = ioctl (filedesc, SIOCSPGRP, &owner); | |
| 946 } | |
| 947 #endif | |
| 948 } | |
| 949 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 950 DEVICE_OLD_FCNTL_OWNER (d) = fcntl (filedesc, F_GETOWN, 0); | |
| 951 fcntl (filedesc, F_SETOWN, getpid ()); | |
| 952 #endif | |
| 953 } | |
| 954 | |
| 955 static void | |
| 956 reset_sigio_on_device (struct device *d) | |
| 957 { | |
| 958 int filedesc = DEVICE_INFD (d); | |
| 959 | |
| 960 #if defined (FIOSSAIOOWN) | |
| 961 { /* HPUX stuff */ | |
| 962 int ioctl_status; | |
| 963 if (DEVICE_TTY_P (d)) | |
| 964 { | |
| 965 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, | |
| 966 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 967 } | |
| 968 #ifdef HAVE_WINDOW_SYSTEM | |
| 969 else if (!DEVICE_STREAM_P (d)) | |
| 970 { | |
| 971 ioctl_status = ioctl (filedesc, SIOCSPGRP, | |
| 972 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 973 } | |
| 974 #endif | |
| 975 } | |
| 976 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 977 fcntl (filedesc, F_SETOWN, DEVICE_OLD_FCNTL_OWNER (d)); | |
| 978 #endif | |
| 979 } | |
| 980 | |
| 981 static void | |
| 982 request_sigio_on_device (struct device *d) | |
| 983 { | |
| 984 int filedesc = DEVICE_INFD (d); | |
| 985 | |
| 502 | 986 /* NOTE: It appears that Linux has its own mechanism for requesting |
| 987 SIGIO, using the F_GETSIG and F_SETSIG commands to fcntl(). | |
| 988 These let you pick which signal you want sent (not just SIGIO), | |
| 989 and if you do this, you get additional info which tells you which | |
| 990 file descriptor has input ready on it. The man page says: | |
| 991 | |
| 992 Using these mechanisms, a program can implement fully | |
| 993 asynchronous I/O without using select(2) or poll(2) most | |
| 994 of the time. | |
| 995 | |
| 996 The use of O_ASYNC, F_GETOWN, F_SETOWN is specific to BSD | |
| 997 and Linux. F_GETSIG and F_SETSIG are Linux-specific. | |
| 998 POSIX has asynchronous I/O and the aio_sigevent structure | |
| 999 to achieve similar things; these are also available in | |
| 1000 Linux as part of the GNU C Library (Glibc). | |
| 1001 | |
| 1002 But it appears that Linux also supports O_ASYNC, so I see no | |
| 1003 particular need to switch. --ben | |
| 1004 */ | |
| 1005 | |
|
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parents:
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|
1006 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 1007 { |
| 502 | 1008 int events = 0; |
| 428 | 1009 ioctl (filedesc, I_GETSIG, &events); |
| 1010 ioctl (filedesc, I_SETSIG, events | S_INPUT); | |
| 1011 } | |
| 502 | 1012 #elif defined (O_ASYNC) |
| 1013 /* Generally FASYNC and O_ASYNC are both defined, and both equal; | |
| 1014 but let's not depend on that. O_ASYNC appears to be more | |
| 1015 standard (at least the Linux include files think so), so | |
| 1016 check it first. */ | |
| 1017 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | O_ASYNC); | |
| 428 | 1018 #elif defined (FASYNC) |
| 1019 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | FASYNC); | |
| 1020 #elif defined (FIOSSAIOSTAT) | |
| 1021 { | |
| 1022 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 1023 sockets and other devices for some bizarre reason. We guess | |
| 1024 that an X device is a socket, and tty devices aren't. We then | |
| 1025 use the following crud to do the appropriate thing. */ | |
| 1026 int on = 1; | |
| 1027 int ioctl_status; /* ####DG: check if IOCTL succeeds here. */ | |
| 1028 | |
| 1029 if (DEVICE_TTY_P (d)) | |
| 1030 { | |
| 1031 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &on); | |
| 1032 } | |
| 1033 #ifdef HAVE_WINDOW_SYSTEM | |
| 1034 else if (!DEVICE_STREAM_P (d)) | |
| 1035 { | |
| 1036 ioctl_status = ioctl (filedesc, FIOASYNC, &on); | |
| 1037 } | |
| 1038 #endif | |
| 1039 } | |
| 1040 #elif defined (FIOASYNC) | |
| 1041 { | |
| 1042 int on = 1; | |
| 1043 ioctl (filedesc, FIOASYNC, &on); | |
| 1044 } | |
| 1045 #endif | |
| 1046 } | |
| 1047 | |
| 1048 static void | |
| 1049 unrequest_sigio_on_device (struct device *d) | |
| 1050 { | |
| 1051 int filedesc = DEVICE_INFD (d); | |
| 1052 | |
|
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parents:
3700
diff
changeset
|
1053 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 1054 { |
| 502 | 1055 int events = 0; |
| 428 | 1056 ioctl (filedesc, I_GETSIG, &events); |
| 1057 ioctl (filedesc, I_SETSIG, events & ~S_INPUT); | |
| 1058 } | |
| 502 | 1059 #elif defined (O_ASYNC) |
| 1060 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~O_ASYNC); | |
| 428 | 1061 #elif defined (FASYNC) |
| 1062 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~FASYNC); | |
| 1063 #elif defined (FIOSSAIOSTAT) | |
| 1064 { | |
| 1065 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 1066 sockets and other devices for some bizarre reason. We guess | |
| 1067 that an X device is a socket, and tty devices aren't. We then | |
| 1068 use the following crud to do the appropriate thing. */ | |
| 1069 | |
| 1070 int off = 0; | |
| 1071 int ioctl_status; | |
| 1072 | |
| 1073 /* See comment for request_sigio_on_device */ | |
| 1074 | |
| 1075 if (DEVICE_TTY_P (d)) | |
| 1076 { | |
| 1077 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &off); | |
| 1078 } | |
| 1079 else | |
| 1080 { | |
| 1081 ioctl_status = ioctl (filedesc, FIOASYNC, &off); | |
| 1082 } | |
| 1083 } | |
| 1084 #elif defined (FIOASYNC) | |
| 1085 { | |
| 1086 int off = 0; | |
| 1087 ioctl (filedesc, FIOASYNC, &off); | |
| 1088 } | |
| 1089 #endif | |
| 1090 } | |
| 1091 | |
| 1092 void | |
| 1093 request_sigio (void) | |
| 1094 { | |
| 1095 Lisp_Object devcons, concons; | |
| 1096 | |
| 1097 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1098 { | |
| 1099 struct device *d; | |
| 1100 | |
| 1101 d = XDEVICE (XCAR (devcons)); | |
| 1102 | |
| 1103 if (!DEVICE_STREAM_P (d)) | |
| 1104 request_sigio_on_device (d); | |
| 1105 } | |
| 1106 } | |
| 1107 | |
| 1108 void | |
| 1109 unrequest_sigio (void) | |
| 1110 { | |
| 1111 Lisp_Object devcons, concons; | |
| 1112 | |
| 1113 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1114 { | |
| 1115 struct device *d; | |
| 1116 | |
| 1117 d = XDEVICE (XCAR (devcons)); | |
| 1118 | |
| 1119 if (!DEVICE_STREAM_P (d)) | |
| 1120 unrequest_sigio_on_device (d); | |
| 1121 } | |
| 1122 } | |
| 1123 | |
| 1124 #endif /* SIGIO */ | |
| 1125 | |
| 1126 /* ------------------------------------------------------ */ | |
| 1127 /* Changing Emacs's process group */ | |
| 1128 /* ------------------------------------------------------ */ | |
| 1129 | |
| 1130 /* Saving and restoring the process group of Emacs's terminal. */ | |
| 1131 | |
| 1132 /* On some systems, apparently (?!) Emacs must be in its own process | |
| 1133 group in order to receive SIGIO correctly. On other systems | |
| 1134 (e.g. Solaris), it's not required and doing it makes things | |
| 1135 get fucked up. So, we only do it when | |
| 1136 SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP is defined. Basically, | |
| 1137 this is only required for BSD 4.2 systems. (Actually, I bet | |
| 1138 we don't have to do this at all -- those systems also | |
| 1139 required interrupt input, which we don't support.) | |
| 1140 | |
| 1141 If Emacs was in its own process group (i.e. inherited_pgroup == | |
| 1142 getpid ()), then we know we're running under a shell with job | |
| 1143 control (Emacs would never be run as part of a pipeline). | |
| 1144 Everything is fine. | |
| 1145 | |
| 1146 If Emacs was not in its own process group, then we know we're | |
| 1147 running under a shell (or a caller) that doesn't know how to | |
| 1148 separate itself from Emacs (like sh). Emacs must be in its own | |
| 1149 process group in order to receive SIGIO correctly. In this | |
| 1150 situation, we put ourselves in our own pgroup, forcibly set the | |
| 1151 tty's pgroup to our pgroup, and make sure to restore and reinstate | |
| 1152 the tty's pgroup just like any other terminal setting. If | |
| 1153 inherited_group was not the tty's pgroup, then we'll get a | |
| 1154 SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
| 1155 it goes foreground in the future, which is what should happen. */ | |
| 1156 | |
| 1157 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1158 | |
| 442 | 1159 static pid_t inherited_pgroup; |
| 1160 static pid_t inherited_tty_pgroup; | |
| 428 | 1161 |
| 1162 #endif | |
| 1163 | |
| 1164 void | |
| 1165 munge_tty_process_group (void) | |
| 1166 { | |
| 1167 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1168 if (noninteractive) | |
| 1169 return; | |
| 1170 | |
| 1171 /* Only do this munging if we have a device on the controlling | |
| 1172 terminal. See the large comment below. */ | |
| 1173 | |
| 1174 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1175 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1176 { | |
| 1177 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 442 | 1178 pid_t me = getpid (); |
| 428 | 1179 EMACS_BLOCK_SIGNAL (SIGTTOU); |
| 1180 EMACS_SET_TTY_PROCESS_GROUP (fd, &me); | |
| 1181 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1182 retry_close (fd); |
| 428 | 1183 } |
| 1184 #endif | |
| 1185 } | |
| 1186 | |
| 1187 /* Split off the foreground process group to Emacs alone. | |
| 1188 When we are in the foreground, but not started in our own process | |
| 1189 group, redirect the TTY to point to our own process group. We need | |
| 1190 to be in our own process group to receive SIGIO properly. */ | |
| 1191 static void | |
| 1192 munge_process_groups (void) | |
| 1193 { | |
| 1194 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1195 if (noninteractive) | |
| 1196 return; | |
| 1197 | |
| 1198 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1199 | |
| 1200 munge_tty_process_group (); | |
| 1201 #endif | |
| 1202 } | |
| 1203 | |
| 1204 void | |
| 1205 unmunge_tty_process_group (void) | |
| 1206 { | |
| 1207 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1208 { | |
| 1209 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1210 EMACS_BLOCK_SIGNAL (SIGTTOU); | |
| 1211 EMACS_SET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 1212 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1213 retry_close (fd); |
| 428 | 1214 } |
| 1215 #endif | |
| 1216 } | |
| 1217 | |
| 1218 /* Set the tty to our original foreground group. | |
| 1219 Also restore the original process group (put us back into sh's | |
| 1220 process group), so that ^Z will suspend both us and sh. */ | |
| 1221 static void | |
| 1222 unmunge_process_groups (void) | |
| 1223 { | |
| 1224 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1225 if (noninteractive) | |
| 1226 return; | |
| 1227 | |
| 1228 unmunge_tty_process_group (); | |
| 1229 | |
| 1230 EMACS_SET_PROCESS_GROUP (inherited_pgroup); | |
| 1231 #endif | |
| 1232 } | |
| 1233 | |
| 1234 /* According to some old wisdom, we need to be in a separate process | |
| 1235 group for SIGIO to work correctly (at least on some systems ...). | |
| 1236 So go ahead and put ourselves into our own process group. This | |
| 1237 will fail if we're already in our own process group, but who cares. | |
| 1238 Also record whether we were in our own process group. (In general, | |
| 1239 we will already be in our own process group if we were started from | |
| 1240 a job-control shell like csh, but not if we were started from sh). | |
| 1241 | |
| 1242 If we succeeded in changing our process group, then we will no | |
| 1243 longer be in the foreground process group of our controlling | |
| 1244 terminal. Therefore, if we have a console open onto this terminal, | |
| 1245 we have to change the controlling terminal's foreground process | |
| 1246 group (otherwise we will get stopped with a SIGTTIN signal when | |
| 1247 attempting to read from the terminal). It's important, | |
| 1248 however, that we do this *only* when we have a console open onto | |
| 1249 the terminal. It's a decidedly bad idea to do so otherwise, | |
| 1250 especially if XEmacs was started from the background. */ | |
| 1251 | |
| 1252 void | |
| 1253 init_process_group (void) | |
| 1254 { | |
| 1255 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1256 if (! noninteractive) | |
| 1257 { | |
| 1258 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1259 inherited_pgroup = EMACS_GET_PROCESS_GROUP (); | |
| 1260 EMACS_GET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 771 | 1261 retry_close (fd); |
| 428 | 1262 EMACS_SEPARATE_PROCESS_GROUP (); |
| 1263 } | |
| 1264 #endif | |
| 1265 } | |
| 1266 | |
| 1267 void | |
| 1268 disconnect_controlling_terminal (void) | |
| 1269 { | |
| 1270 # ifdef HAVE_SETSID | |
| 1271 /* Controlling terminals are attached to a session. | |
| 1272 Create a new session for us; it will have no controlling | |
| 1273 terminal. This also, of course, puts us in our own | |
| 1274 process group. */ | |
| 1275 setsid (); | |
| 1276 # else | |
| 1277 /* Put us in our own process group. */ | |
| 1278 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1279 # if defined (TIOCNOTTY) | |
| 1280 /* This is the older way of disconnecting the controlling | |
| 1281 terminal, on 4.3 BSD. We must open /dev/tty; using | |
| 1282 filedesc 0 is not sufficient because it could be | |
| 1283 something else (e.g. our stdin was redirected to | |
| 1284 another terminal). | |
| 1285 */ | |
| 1286 { | |
| 1287 int j = open ("/dev/tty", O_RDWR, 0); | |
| 1288 ioctl (j, TIOCNOTTY, 0); | |
| 771 | 1289 retry_close (j); |
| 428 | 1290 } |
| 1291 # endif /* TIOCNOTTY */ | |
| 1292 /* | |
| 1293 On systems without TIOCNOTTY and without | |
| 1294 setsid(), we don't need to do anything more to | |
| 1295 disconnect our controlling terminal. Here is | |
| 1296 what the man page for termio(7) from a SYSV 3.2 | |
| 1297 system says: | |
| 1298 | |
| 1299 "The first terminal file opened by the process group leader | |
| 1300 of a terminal file not already associated with a process | |
| 1301 group becomes the control terminal for that process group. | |
| 1302 The control terminal plays a special role in handling quit | |
| 1303 and interrupt signals, as discussed below. The control | |
| 1304 terminal is inherited by a child process during a fork(2). | |
| 1305 A process can break this association by changing its process | |
| 1306 group using setpgrp(2)." | |
| 1307 | |
| 1308 */ | |
| 1309 # endif /* not HAVE_SETSID */ | |
| 1310 } | |
| 1311 | |
| 1312 | |
| 1313 /* ------------------------------------------------------ */ | |
| 1314 /* Getting and setting emacs_tty structures */ | |
| 1315 /* ------------------------------------------------------ */ | |
| 1316 | |
| 1317 /* It's wrong to encase these into #ifdef HAVE_TTY because we need | |
| 1318 them for child TTY processes. */ | |
| 1319 /* However, this does break NT support while we don't do child TTY processes */ | |
| 442 | 1320 #ifndef WIN32_NATIVE |
| 428 | 1321 |
| 1322 /* Set *TC to the parameters associated with the terminal FD. | |
| 1323 Return zero if all's well, or -1 if we ran into an error we | |
| 1324 couldn't deal with. */ | |
| 1325 int | |
| 1326 emacs_get_tty (int fd, struct emacs_tty *settings) | |
| 1327 { | |
| 1328 /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
| 1329 #ifdef HAVE_TCATTR | |
| 1330 /* We have those nifty POSIX tcmumbleattr functions. */ | |
| 1331 if (tcgetattr (fd, &settings->main) < 0) | |
| 1332 return -1; | |
| 1333 | |
| 1334 #elif defined HAVE_TERMIO | |
| 1335 /* The SYSV-style interface? */ | |
| 1336 if (ioctl (fd, TCGETA, &settings->main) < 0) | |
| 1337 return -1; | |
| 1338 | |
| 814 | 1339 #else |
| 428 | 1340 /* I give up - I hope you have the BSD ioctls. */ |
| 1341 if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
| 1342 return -1; | |
| 1343 #endif /* HAVE_TCATTR */ | |
| 1344 | |
| 1345 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1346 #ifdef HAVE_LTCHARS | |
| 1347 if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) | |
| 1348 return -1; | |
| 1349 #endif | |
| 1350 | |
| 1351 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1352 #ifdef HAVE_TCHARS | |
| 1353 if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 | |
| 1354 || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
| 1355 return -1; | |
| 1356 #endif | |
| 1357 | |
| 1358 /* We have survived the tempest. */ | |
| 1359 return 0; | |
| 1360 } | |
| 1361 | |
| 1362 /* Set the parameters of the tty on FD according to the contents of | |
| 1363 *SETTINGS. If FLUSHP is non-zero, we discard input. | |
| 430 | 1364 Return 0 if all went well, and -1 if anything failed. |
| 1365 #### All current callers use FLUSHP == 0. */ | |
| 428 | 1366 |
| 1367 int | |
| 1368 emacs_set_tty (int fd, struct emacs_tty *settings, int flushp) | |
| 1369 { | |
| 1370 /* Set the primary parameters - baud rate, character size, etcetera. */ | |
| 1371 #ifdef HAVE_TCATTR | |
| 1372 int i; | |
| 1373 /* We have those nifty POSIX tcmumbleattr functions. | |
| 1374 William J. Smith <wjs@wiis.wang.com> writes: | |
| 1375 "POSIX 1003.1 defines tcsetattr() to return success if it was | |
| 1376 able to perform any of the requested actions, even if some | |
| 1377 of the requested actions could not be performed. | |
| 1378 We must read settings back to ensure tty setup properly. | |
| 1379 AIX requires this to keep tty from hanging occasionally." */ | |
| 1380 /* This makes sure that we don't loop indefinitely in here. */ | |
| 1381 for (i = 0 ; i < 10 ; i++) | |
| 1382 if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) | |
| 1383 { | |
| 1384 if (errno == EINTR) | |
| 1385 continue; | |
| 1386 else | |
| 1387 return -1; | |
| 1388 } | |
| 1389 else | |
| 1390 { | |
| 2957 | 1391 struct termios new_; |
| 428 | 1392 |
| 1393 /* Get the current settings, and see if they're what we asked for. */ | |
| 2957 | 1394 tcgetattr (fd, &new_); |
| 428 | 1395 /* We cannot use memcmp on the whole structure here because under |
| 1396 * aix386 the termios structure has some reserved field that may | |
| 1397 * 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
|
1398 * FIXME: Now that aix386 is gone, can we memcmp the whole structure? |
| 428 | 1399 */ |
| 2957 | 1400 if ( new_.c_iflag == settings->main.c_iflag |
| 1401 && new_.c_oflag == settings->main.c_oflag | |
| 1402 && new_.c_cflag == settings->main.c_cflag | |
| 1403 && new_.c_lflag == settings->main.c_lflag | |
| 1404 && memcmp(new_.c_cc, settings->main.c_cc, NCCS) == 0) | |
| 428 | 1405 break; |
| 1406 else | |
| 1407 continue; | |
| 1408 } | |
| 1409 #elif defined HAVE_TERMIO | |
| 1410 /* The SYSV-style interface? */ | |
| 1411 if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) | |
| 1412 return -1; | |
| 1413 | |
| 814 | 1414 #else |
| 428 | 1415 /* I give up - I hope you have the BSD ioctls. */ |
| 1416 if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
| 1417 return -1; | |
| 1418 #endif /* HAVE_TCATTR */ | |
| 1419 | |
| 1420 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1421 #ifdef HAVE_LTCHARS | |
| 1422 if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) | |
| 1423 return -1; | |
| 1424 #endif | |
| 1425 | |
| 1426 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1427 #ifdef HAVE_TCHARS | |
| 1428 if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 | |
| 1429 || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
| 1430 return -1; | |
| 1431 #endif | |
| 1432 | |
| 1433 /* We have survived the tempest. */ | |
| 1434 return 0; | |
| 1435 } | |
| 1436 | |
| 442 | 1437 #endif /* WIN32_NATIVE */ |
| 428 | 1438 |
| 1439 /* ------------------------------------------------------ */ | |
| 1440 /* Initializing a device */ | |
| 1441 /* ------------------------------------------------------ */ | |
| 1442 | |
| 1443 #ifdef HAVE_TTY | |
| 1444 | |
| 1445 #if defined (TIOCGLTC) && defined (HAVE_LTCHARS) /* HAVE_LTCHARS */ | |
| 1446 static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; | |
| 1447 #endif | |
| 1448 #ifdef TIOCGETC /* HAVE_TCHARS */ | |
| 1449 #ifdef HAVE_TCHARS | |
| 1450 static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; | |
| 1451 #endif | |
| 1452 #endif | |
| 1453 | |
| 1454 static void | |
| 1455 tty_init_sys_modes_on_device (struct device *d) | |
| 1456 { | |
| 1457 struct emacs_tty tty; | |
| 2286 | 1458 int input_fd; |
| 428 | 1459 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1460 | |
| 1461 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
| 1462 | |
| 430 | 1463 emacs_get_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty); |
| 428 | 1464 tty = CONSOLE_TTY_DATA (con)->old_tty; |
| 1465 | |
| 1466 con->tty_erase_char = Qnil; | |
| 1467 | |
| 1468 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1469 /* after all those years... */ | |
| 1470 con->tty_erase_char = make_char (tty.main.c_cc[VERASE]); | |
| 1471 tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ | |
| 1472 tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
| 1473 #ifdef ISTRIP | |
| 1474 tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
| 1475 #endif | |
| 1476 tty.main.c_lflag &= ~ECHO; /* Disable echo */ | |
| 1477 tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
| 1478 #ifdef IEXTEN | |
| 1479 tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ | |
| 1480 #endif | |
| 1481 tty.main.c_lflag |= ISIG; /* Enable signals */ | |
| 1482 if (TTY_FLAGS (con).flow_control) | |
| 1483 { | |
| 1484 tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
| 1485 #ifdef IXANY | |
| 1486 tty.main.c_iflag &= ~IXANY; | |
| 1487 #endif /* IXANY */ | |
| 1488 } | |
| 1489 else | |
| 1490 tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
| 1491 tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
| 1492 on output */ | |
| 513 | 1493 |
| 1494 #if 0 | |
| 1495 /* We used to disable tab expansion here, but this is the user's decision. */ | |
| 1496 #if defined (TABDLY) && defined (TAB3) | |
| 1497 if ((tty.main.c_oflag & TABDLY) == TAB3) | |
| 1498 tty.main.c_oflag &= ~TABDLY; /* Disable tab expansion (Posix). */ | |
| 1499 #elif defined (OXTABS) | |
| 1500 tty.main.c_oflag &= ~OXTABS; /* Disable tab expansion (BSD). */ | |
| 1501 #endif | |
| 1502 #endif /* 0 */ | |
| 1503 | |
| 428 | 1504 #ifdef CS8 |
| 1505 if (TTY_FLAGS (con).meta_key) | |
| 1506 { | |
| 1507 tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
| 1508 tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
| 1509 } | |
| 1510 #endif | |
| 1511 if (CONSOLE_TTY_DATA (con)->controlling_terminal) | |
| 1512 { | |
| 1204 | 1513 tty.main.c_cc[VINTR] = /* C-g (usually) gives SIGINT */ |
| 2828 | 1514 event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1515 /* Set up C-g for both SIGQUIT and SIGINT. |
| 1516 We don't know which we will get, but we handle both alike | |
| 1517 so which one it really gives us does not matter. */ | |
| 1204 | 1518 tty.main.c_cc[VQUIT] = tty.main.c_cc[VINTR]; |
| 428 | 1519 } |
| 1520 else | |
| 1521 { | |
| 1522 tty.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 1523 tty.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 1524 } | |
| 1525 tty.main.c_cc[VMIN] = 1; /* Input should wait for at | |
| 1526 least 1 char */ | |
| 1527 tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
| 1528 #ifdef VSWTCH | |
| 1529 tty.main.c_cc[VSWTCH] = _POSIX_VDISABLE; /* Turn off shell layering use | |
| 1530 of C-z */ | |
| 1531 #endif /* VSWTCH */ | |
| 1532 /* There was some conditionalizing here on (mips or TCATTR), but | |
| 1533 I think that's wrong. There was one report of C-y (DSUSP) not being | |
| 1534 disabled on HP9000s700 systems, and this might fix it. */ | |
| 1535 #ifdef VSUSP | |
| 1536 tty.main.c_cc[VSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-z. */ | |
| 1537 #endif /* VSUSP */ | |
| 1538 #ifdef V_DSUSP | |
| 1539 tty.main.c_cc[V_DSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-y. */ | |
| 1540 #endif /* V_DSUSP */ | |
| 1541 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ | |
| 1542 tty.main.c_cc[VDSUSP] = _POSIX_VDISABLE; | |
| 1543 #endif /* VDSUSP */ | |
| 1544 #ifdef VLNEXT | |
| 1545 tty.main.c_cc[VLNEXT] = _POSIX_VDISABLE; | |
| 1546 #endif /* VLNEXT */ | |
| 1547 #ifdef VREPRINT | |
| 1548 tty.main.c_cc[VREPRINT] = _POSIX_VDISABLE; | |
| 1549 #endif /* VREPRINT */ | |
| 1550 #ifdef VWERASE | |
| 1551 tty.main.c_cc[VWERASE] = _POSIX_VDISABLE; | |
| 1552 #endif /* VWERASE */ | |
| 1553 #ifdef VDISCARD | |
| 1554 tty.main.c_cc[VDISCARD] = _POSIX_VDISABLE; | |
| 1555 #endif /* VDISCARD */ | |
| 1556 #ifdef VSTART | |
| 1557 tty.main.c_cc[VSTART] = _POSIX_VDISABLE; | |
| 1558 #endif /* VSTART */ | |
| 1559 #ifdef VSTRT | |
| 1560 tty.main.c_cc[VSTRT] = _POSIX_VDISABLE; /* called VSTRT on some systems */ | |
| 1561 #endif /* VSTART */ | |
| 1562 #ifdef VSTOP | |
| 1563 tty.main.c_cc[VSTOP] = _POSIX_VDISABLE; | |
| 1564 #endif /* VSTOP */ | |
| 1565 | |
| 1566 #ifdef AIX | |
| 1567 #ifndef IBMR2AIX | |
| 1568 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 1569 tty.main.c_line = 0; | |
| 1570 tty.main.c_iflag &= ~ASCEDIT; | |
| 1571 #else | |
| 1572 tty.main.c_cc[VSTRT] = 255; | |
| 1573 tty.main.c_cc[VSTOP] = 255; | |
| 1574 tty.main.c_cc[VSUSP] = 255; | |
| 1575 tty.main.c_cc[VDSUSP] = 255; | |
| 1576 #endif /* IBMR2AIX */ | |
| 1577 /* Also, PTY overloads NUL and BREAK. | |
| 1578 don't ignore break, but don't signal either, so it looks like NUL. | |
| 1579 This really serves a purpose only if running in an XTERM window | |
| 1580 or via TELNET or the like, but does no harm elsewhere. */ | |
| 1581 tty.main.c_iflag &= ~IGNBRK; | |
| 1582 tty.main.c_iflag &= ~BRKINT; | |
| 1583 #endif /* AIX */ | |
| 1584 #else /* if not HAVE_TERMIO */ | |
| 1585 con->tty_erase_char = make_char (tty.main.sg_erase); | |
| 1586 tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); | |
| 1587 if (TTY_FLAGS (con).meta_key) | |
| 1588 tty.main.sg_flags |= ANYP; | |
| 1589 /* #### should we be using RAW mode here? */ | |
| 1590 tty.main.sg_flags |= /* interrupt_input ? RAW : */ CBREAK; | |
| 1591 #endif /* not HAVE_TERMIO */ | |
| 1592 | |
| 1593 /* If going to use CBREAK mode, we must request C-g to interrupt | |
| 1594 and turn off start and stop chars, etc. If not going to use | |
| 1595 CBREAK mode, do this anyway so as to turn off local flow | |
| 1596 control for user coming over network on 4.2; in this case, | |
| 1597 only t_stopc and t_startc really matter. */ | |
| 1598 #ifndef HAVE_TERMIO | |
| 1599 #ifdef HAVE_TCHARS | |
| 1600 /* Note: if not using CBREAK mode, it makes no difference how we | |
| 1601 set this */ | |
| 1602 tty.tchars = new_tchars; | |
| 2828 | 1603 tty.tchars.t_intrc = event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1604 if (TTY_FLAGS (con).flow_control) |
| 1605 { | |
| 1606 tty.tchars.t_startc = '\021'; | |
| 1607 tty.tchars.t_stopc = '\023'; | |
| 1608 } | |
| 1609 | |
| 1610 tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | | |
| 1611 CONSOLE_TTY_DATA (con)->old_tty.lmode; | |
| 1612 #endif /* HAVE_TCHARS */ | |
| 1613 #endif /* not HAVE_TERMIO */ | |
| 1614 | |
| 1615 #ifdef HAVE_LTCHARS | |
| 1616 tty.ltchars = new_ltchars; | |
| 1617 #endif /* HAVE_LTCHARS */ | |
| 1618 | |
| 430 | 1619 emacs_set_tty (input_fd, &tty, 0); |
| 428 | 1620 |
| 1621 /* This code added to insure that, if flow-control is not to be used, | |
| 1622 we have an unlocked terminal at the start. */ | |
| 1623 | |
| 1624 #ifdef TCXONC | |
| 1625 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TCXONC, 1); | |
| 1626 #endif | |
| 1627 #ifdef TIOCSTART | |
| 1628 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TIOCSTART, 0); | |
| 1629 #endif | |
| 1630 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1631 #if defined (HAVE_TERMIOS) |
| 428 | 1632 #ifdef TCOON |
| 1633 if (!TTY_FLAGS (con).flow_control) tcflow (input_fd, TCOON); | |
| 1634 #endif | |
| 1635 #endif | |
|
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|
1636 |
| 428 | 1637 set_tty_modes (con); |
| 1638 } | |
| 1639 | |
| 1640 #endif /* HAVE_TTY */ | |
| 1641 | |
| 1642 void | |
| 2340 | 1643 init_one_device ( |
| 1644 #if defined(HAVE_TTY) || (defined(SIGIO) && !defined(BROKEN_SIGIO)) | |
| 1645 struct device *d | |
| 1646 #else | |
| 1647 struct device *UNUSED (d) | |
| 1648 #endif | |
| 1649 ) | |
| 428 | 1650 { |
| 1651 #ifdef HAVE_TTY | |
| 1652 if (DEVICE_TTY_P (d)) | |
| 1653 tty_init_sys_modes_on_device (d); | |
| 1654 #endif | |
| 1655 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1656 if (!DEVICE_STREAM_P (d)) | |
| 1657 { | |
| 1658 init_sigio_on_device (d); | |
| 1659 request_sigio_on_device (d); | |
| 1660 } | |
| 1661 #endif | |
| 1662 } | |
| 1663 | |
| 1664 void | |
| 1665 init_one_console (struct console *con) | |
| 1666 { | |
| 1667 Lisp_Object devcons; | |
| 1668 | |
| 1669 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1670 { | |
| 1671 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1672 | |
| 1673 init_one_device (d); | |
| 1674 } | |
| 1675 } | |
| 1676 | |
| 1677 void | |
| 1678 reinit_initial_console (void) | |
| 1679 { | |
| 1680 munge_process_groups (); | |
| 1681 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1682 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1683 init_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1684 } | |
| 1685 | |
| 1686 | |
| 1687 /* ------------------------------------------------------ */ | |
| 1688 /* Other TTY functions */ | |
| 1689 /* ------------------------------------------------------ */ | |
| 1690 | |
| 1691 #ifdef HAVE_TTY | |
| 1692 | |
| 1693 #if 0 /* not currently used */ | |
| 1694 | |
| 1695 /* Return nonzero if safe to use tabs in output. | |
| 1696 At the time this is called, init_sys_modes has not been done yet. */ | |
| 1697 | |
| 1698 int | |
| 2340 | 1699 tabs_safe_p (struct device *USED_IF_TTY (d)) |
| 428 | 1700 { |
| 1701 #ifdef HAVE_TTY | |
| 1702 if (DEVICE_TTY_P (d)) | |
| 1703 { | |
| 1704 struct emacs_tty tty; | |
| 1705 | |
| 430 | 1706 emacs_get_tty (DEVICE_INFD (d), &tty); |
| 428 | 1707 return EMACS_TTY_TABS_OK (&tty); |
| 1708 } | |
| 1709 #endif | |
| 1710 return 1; | |
| 1711 } | |
| 1712 | |
| 1713 #endif /* 0 */ | |
| 1714 | |
| 1715 /* Get terminal size from system. | |
| 1716 Store number of lines into *heightp and width into *widthp. | |
| 1717 If zero or a negative number is stored, the value is not valid. */ | |
| 1718 | |
| 1719 void | |
| 1720 get_tty_device_size (struct device *d, int *widthp, int *heightp) | |
| 1721 { | |
| 1722 int input_fd = DEVICE_INFD (d); | |
| 1723 | |
| 1724 assert (DEVICE_TTY_P (d)); | |
| 1725 | |
| 1726 #ifdef TIOCGWINSZ | |
| 1727 { | |
| 1728 /* BSD-style. */ | |
| 1729 struct winsize size; | |
| 1730 | |
| 1731 if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
| 1732 *widthp = *heightp = 0; | |
| 1733 else | |
| 1734 { | |
| 1735 *widthp = size.ws_col; | |
| 1736 *heightp = size.ws_row; | |
| 1737 } | |
| 1738 } | |
| 1739 #elif defined TIOCGSIZE | |
| 1740 { | |
| 1741 /* SunOS - style. */ | |
| 1742 struct ttysize size; | |
| 1743 | |
| 1744 if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
| 1745 *widthp = *heightp = 0; | |
| 1746 else | |
| 1747 { | |
| 1748 *widthp = size.ts_cols; | |
| 1749 *heightp = size.ts_lines; | |
| 1750 } | |
| 1751 } | |
| 1752 #else /* system doesn't know size */ | |
| 1753 | |
| 1754 *widthp = 0; | |
| 1755 *heightp = 0; | |
| 1756 | |
| 1757 #endif /* not !TIOCGWINSZ */ | |
| 1758 } | |
| 1759 | |
| 1760 #endif /* HAVE_TTY */ | |
| 1761 | |
| 1762 | |
| 1763 /* ------------------------------------------------------ */ | |
| 1764 /* Is device 8 bit ? */ | |
| 1765 /* ------------------------------------------------------ */ | |
| 1766 | |
| 1767 #ifdef HAVE_TTY | |
| 1768 | |
| 1769 int | |
| 1770 eight_bit_tty (struct device *d) | |
| 1771 { | |
| 1772 struct emacs_tty s; | |
| 1773 int input_fd; | |
| 1774 int eight_bit = 0; | |
| 1775 | |
| 1776 assert (DEVICE_TTY_P (d)); | |
| 1777 input_fd = DEVICE_INFD (d); | |
| 1778 | |
| 430 | 1779 emacs_get_tty (input_fd, &s); |
| 428 | 1780 |
| 1781 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1782 eight_bit = (s.main.c_cflag & CSIZE) == CS8; | |
| 1783 #else | |
| 1784 eight_bit = 0; /* I don't know how to do it */ | |
| 1785 #endif | |
| 1786 return eight_bit; | |
| 1787 } | |
| 1788 | |
| 1789 #endif /* HAVE_TTY */ | |
| 1790 | |
| 1791 | |
| 1792 /* ------------------------------------------------------ */ | |
| 1793 /* Resetting a device */ | |
| 1794 /* ------------------------------------------------------ */ | |
| 1795 | |
| 1796 #ifdef HAVE_TTY | |
| 1797 | |
| 1798 /* Prepare the terminal for exiting Emacs; move the cursor to the | |
| 1799 bottom of the frame, turn off interrupt-driven I/O, etc. */ | |
| 1800 static void | |
| 1801 tty_reset_sys_modes_on_device (struct device *d) | |
| 1802 { | |
|
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Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1803 #if defined (BSD) |
| 2286 | 1804 int output_fd; |
| 1805 #endif | |
| 1806 int input_fd; | |
| 428 | 1807 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1808 | |
| 1809 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
|
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Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1810 #if defined (BSD) |
| 428 | 1811 output_fd = CONSOLE_TTY_DATA (con)->outfd; |
| 2286 | 1812 #endif |
| 428 | 1813 |
| 1814 tty_redisplay_shutdown (con); | |
| 1815 /* reset_tty_modes() flushes the connection at its end. */ | |
| 1816 reset_tty_modes (con); | |
| 1817 | |
| 1818 #if defined (BSD) | |
| 1819 /* Avoid possible loss of output when changing terminal modes. */ | |
| 1820 fsync (output_fd); | |
| 1821 #endif | |
| 1822 | |
| 430 | 1823 while (emacs_set_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty, 0) |
| 428 | 1824 < 0 && errno == EINTR) |
| 1825 ; | |
| 1826 } | |
| 1827 | |
| 1828 #endif /* HAVE_TTY */ | |
| 1829 | |
| 1830 void | |
| 1831 reset_one_device (struct device *d) | |
| 1832 { | |
| 1833 #ifdef HAVE_TTY | |
| 1834 if (DEVICE_TTY_P (d)) | |
| 1835 tty_reset_sys_modes_on_device (d); | |
| 1836 else | |
| 1837 #endif | |
| 1838 if (DEVICE_STREAM_P (d)) | |
| 1839 fflush (CONSOLE_STREAM_DATA (XCONSOLE (DEVICE_CONSOLE (d)))->out); | |
| 1840 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1841 if (!DEVICE_STREAM_P (d)) | |
| 1842 { | |
| 1843 unrequest_sigio_on_device (d); | |
| 1844 reset_sigio_on_device (d); | |
| 1845 } | |
| 1846 #endif | |
| 1847 } | |
| 1848 | |
| 1849 void | |
| 1850 reset_one_console (struct console *con) | |
| 1851 { | |
| 1852 /* Note: this can be called during GC. */ | |
| 1853 Lisp_Object devcons; | |
| 1854 | |
| 1855 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1856 { | |
| 1857 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1858 | |
| 1859 reset_one_device (d); | |
| 1860 } | |
| 1861 } | |
| 1862 | |
| 1863 void | |
| 1864 reset_all_consoles (void) | |
| 1865 { | |
| 1866 /* Note: this can be called during GC. */ | |
| 1867 Lisp_Object concons; | |
| 1868 | |
| 1869 CONSOLE_LOOP (concons) | |
| 1870 { | |
| 1871 struct console *con = XCONSOLE (XCAR (concons)); | |
| 1872 | |
| 1873 reset_one_console (con); | |
| 1874 } | |
| 1875 | |
| 1876 unmunge_process_groups (); | |
| 1877 } | |
| 1878 | |
| 1879 void | |
| 1880 reset_initial_console (void) | |
| 1881 { | |
| 1882 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1883 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1884 reset_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1885 unmunge_process_groups (); | |
| 1886 } | |
| 1887 | |
| 1888 | |
| 1889 /************************************************************************/ | |
| 1890 /* limits of text/data segments */ | |
| 1891 /************************************************************************/ | |
| 1892 | |
| 801 | 1893 /* Need start_of_data() as much as possible now, for total_data_usage(); |
| 1894 but with PDUMP and WIN32_NATIVE, can't currently do it. */ | |
| 1330 | 1895 #if ! (defined (PDUMP) && defined (WIN32_NATIVE) && defined (SYSTEM_MALLOC)) |
| 428 | 1896 #define NEED_STARTS |
| 1897 #endif | |
| 1898 | |
| 1899 #ifdef NEED_STARTS | |
| 1900 /* Some systems that cannot dump also cannot implement these. */ | |
| 1901 | |
| 1902 /* | |
| 1903 * Return the address of the start of the text segment prior to | |
| 1904 * doing an unexec. After unexec the return value is undefined. | |
| 1905 * See crt0.c for further explanation and _start. | |
| 1906 * | |
| 1907 */ | |
| 1908 | |
| 801 | 1909 #if !defined (HAVE_TEXT_START) && !defined (PDUMP) |
| 440 | 1910 |
| 442 | 1911 EXTERN_C int _start (void); |
| 428 | 1912 |
| 1913 char * | |
| 1914 start_of_text (void) | |
| 1915 { | |
| 1916 #ifdef TEXT_START | |
| 442 | 1917 return (char *) TEXT_START; |
| 428 | 1918 #else |
| 442 | 1919 return (char *) _start; |
| 428 | 1920 #endif /* TEXT_START */ |
| 1921 } | |
| 440 | 1922 #endif /* !defined(HAVE_TEXT_START) && !defined(PDUMP) */ |
| 428 | 1923 |
| 1924 /* | |
| 1925 * Return the address of the start of the data segment prior to | |
| 1926 * doing an unexec. After unexec the return value is undefined. | |
| 442 | 1927 * See ecrt0.c for further information and definition of data_start. |
| 428 | 1928 * |
| 1929 * Apparently, on BSD systems this is etext at startup. On | |
| 1930 * USG systems (swapping) this is highly mmu dependent and | |
| 1931 * is also dependent on whether or not the program is running | |
| 1932 * with shared text. Generally there is a (possibly large) | |
| 1933 * gap between end of text and start of data with shared text. | |
| 1934 * | |
| 1935 * On Uniplus+ systems with shared text, data starts at a | |
| 1936 * fixed address. Each port (from a given oem) is generally | |
| 1937 * different, and the specific value of the start of data can | |
| 1938 * be obtained via the UniPlus+ specific "uvar" system call, | |
| 1939 * however the method outlined in crt0.c seems to be more portable. | |
| 1940 * | |
| 1941 * Probably what will have to happen when a USG unexec is available, | |
| 1942 * at least on UniPlus, is temacs will have to be made unshared so | |
| 1943 * that text and data are contiguous. Then once loadup is complete, | |
| 1944 * unexec will produce a shared executable where the data can be | |
| 1945 * at the normal shared text boundary and the startofdata variable | |
| 1946 * will be patched by unexec to the correct value. | |
| 1947 * | |
| 1948 */ | |
| 1949 | |
| 801 | 1950 #if defined (ORDINARY_LINK) && !defined (MINGW) |
| 428 | 1951 extern char **environ; |
| 1952 #endif | |
| 1953 | |
| 1954 void * | |
| 1955 start_of_data (void) | |
| 1956 { | |
| 1957 #ifdef DATA_START | |
| 1958 return ((char *) DATA_START); | |
| 1959 #else | |
| 452 | 1960 #if defined (ORDINARY_LINK) || defined(PDUMP) |
| 428 | 1961 /* |
| 1962 * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
| 1963 * data_start isn't defined. We take the address of environ, which | |
| 1964 * is known to live at or near the start of the system crt0.c, and | |
| 1965 * we don't sweat the handful of bytes that might lose. | |
| 1966 */ | |
| 442 | 1967 #if defined (HEAP_IN_DATA) && !defined(PDUMP) |
| 428 | 1968 extern char* static_heap_base; |
| 1969 if (!initialized) | |
| 1970 return static_heap_base; | |
| 1971 #endif | |
| 801 | 1972 return ((char *) &environ); |
| 428 | 1973 #else |
| 1974 extern int data_start; | |
| 1975 return ((char *) &data_start); | |
| 1976 #endif /* ORDINARY_LINK */ | |
| 1977 #endif /* DATA_START */ | |
| 1978 } | |
| 1330 | 1979 #endif /* NEED_STARTS aka !(PDUMP && WIN32_NATIVE && SYSTEM_MALLOC) */ |
| 428 | 1980 |
| 801 | 1981 extern void *minimum_address_seen; /* from xmalloc() */ |
| 1982 extern void *maximum_address_seen; /* from xmalloc() */ | |
| 1983 | |
| 1984 Bytecount | |
| 1985 total_data_usage (void) | |
| 1986 { | |
| 1987 #ifdef NEED_STARTS | |
| 1988 void *data_start = start_of_data (); | |
| 1989 #else | |
| 1990 void *data_start = minimum_address_seen; | |
| 1991 #endif | |
| 854 | 1992 |
| 1315 | 1993 #ifndef WIN32_ANY |
| 814 | 1994 void *data_end = sbrk (0); |
| 801 | 1995 #else |
| 1996 void *data_end = maximum_address_seen; | |
| 1997 #endif | |
| 1998 | |
| 1999 /* Sanity checking -- the min determined by malloc() should always be | |
| 2000 greater than data start determined by other means. We could do the | |
| 2001 same check on the max, except that things like rel-alloc might | |
| 2002 invalidate it. */ | |
| 2003 if (minimum_address_seen && | |
| 2004 (char *) minimum_address_seen < (char *) data_start) | |
| 2005 data_start = minimum_address_seen; | |
| 2006 | |
| 2007 if (data_end < data_start) /* Huh?????????? */ | |
| 2008 data_end = maximum_address_seen; | |
| 2009 | |
| 2010 /* #### Doesn't seem to give good results on Windows; values are much | |
| 2011 higher than actual memory usage. How to fix??? */ | |
| 2012 return (char *) data_end - (char *) data_start; | |
| 2013 } | |
| 2014 | |
| 428 | 2015 |
| 2016 /************************************************************************/ | |
| 2017 /* get the system name */ | |
| 2018 /************************************************************************/ | |
| 2019 | |
| 2020 /* init_system_name sets up the string for the Lisp function | |
| 2021 system-name to return. */ | |
| 2022 | |
| 2023 extern Lisp_Object Vsystem_name; | |
| 2024 | |
| 2025 void | |
| 2026 init_system_name (void) | |
| 2027 { | |
| 442 | 2028 #if defined (WIN32_NATIVE) |
| 771 | 2029 Extbyte hostname[MAX_XETCHAR_SIZE * (MAX_COMPUTERNAME_LENGTH + 1)]; |
| 2030 DWORD size = sizeof (hostname) / XETCHAR_SIZE; | |
| 2031 qxeGetComputerName (hostname, &size); | |
| 2032 Vsystem_name = build_tstr_string (hostname); | |
| 428 | 2033 #elif !defined (HAVE_GETHOSTNAME) |
| 2034 struct utsname uts; | |
| 2035 uname (&uts); | |
|
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function renamings to track names of char typedefs
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parents:
4952
diff
changeset
|
2036 Vsystem_name = build_extstring (uts.nodename, Qunix_host_name_encoding); |
| 428 | 2037 #else /* HAVE_GETHOSTNAME */ |
| 647 | 2038 int hostname_size = 256; |
|
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
2039 Extbyte *hostname = alloca_extbytes (hostname_size); |
| 428 | 2040 |
| 2041 /* Try to get the host name; if the buffer is too short, try | |
| 2042 again. Apparently, the only indication gethostname gives of | |
| 2043 whether the buffer was large enough is the presence or absence | |
| 2044 of a '\0' in the string. Eech. */ | |
| 2045 for (;;) | |
| 2046 { | |
| 2047 gethostname (hostname, hostname_size - 1); | |
| 2048 hostname[hostname_size - 1] = '\0'; | |
| 2049 | |
| 2050 /* Was the buffer large enough for the '\0'? */ | |
| 647 | 2051 if ((int) strlen (hostname) < (hostname_size - 1)) |
| 428 | 2052 break; |
| 2053 | |
| 2054 hostname_size <<= 1; | |
|
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
2055 hostname = alloca_extbytes (hostname_size); |
| 428 | 2056 } |
|
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Mule-izing, various fixes related to char * arguments
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parents:
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diff
changeset
|
2057 # if defined (HAVE_SOCKETS) |
| 428 | 2058 /* Turn the hostname into the official, fully-qualified hostname. |
| 2059 Don't do this if we're going to dump; this can confuse system | |
| 2060 libraries on some machines and make the dumped emacs core dump. */ | |
| 2061 if (initialized) | |
|
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Mule-izing, various fixes related to char * arguments
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parents:
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diff
changeset
|
2062 /* !!#### Could fail if we have a 7-bit external encoding */ |
| 428 | 2063 if (!strchr (hostname, '.')) |
| 2064 { | |
|
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parents:
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diff
changeset
|
2065 # if !(defined (HAVE_GETADDRINFO) && defined (HAVE_GETNAMEINFO)) |
| 428 | 2066 struct hostent *hp = NULL; |
| 2067 int count; | |
| 440 | 2068 # ifdef TRY_AGAIN |
| 428 | 2069 for (count = 0; count < 10; count++) |
| 2070 { | |
| 2071 h_errno = 0; | |
| 440 | 2072 # endif |
| 428 | 2073 /* Some systems can't handle SIGALARM/SIGIO in gethostbyname(). */ |
| 2074 stop_interrupts (); | |
| 2075 hp = gethostbyname (hostname); | |
| 2076 start_interrupts (); | |
| 440 | 2077 # ifdef TRY_AGAIN |
| 428 | 2078 if (! (hp == 0 && h_errno == TRY_AGAIN)) |
| 2079 break; | |
|
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Mechanically change INT to FIXNUM in our sources.
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diff
changeset
|
2080 Fsleep_for (make_fixnum (1)); |
| 428 | 2081 } |
| 440 | 2082 # endif |
| 428 | 2083 if (hp) |
| 2084 { | |
|
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diff
changeset
|
2085 const Extbyte *fqdn = (const Extbyte *) hp->h_name; |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
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|
2086 |
|
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|
2087 /* !!#### Could fail if we have a 7-bit external encoding */ |
| 428 | 2088 if (!strchr (fqdn, '.')) |
| 2089 { | |
| 2090 /* We still don't have a fully qualified domain name. | |
| 2091 Try to find one in the list of alternate names */ | |
|
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changeset
|
2092 Extbyte **alias = hp->h_aliases; |
| 428 | 2093 while (*alias && !strchr (*alias, '.')) |
| 2094 alias++; | |
| 2095 if (*alias) | |
| 2096 fqdn = *alias; | |
| 2097 } | |
|
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|
2098 hostname = alloca_extbytes (strlen (fqdn) + 1); |
| 428 | 2099 strcpy (hostname, fqdn); |
| 2100 } | |
| 440 | 2101 # else /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ |
| 2102 struct addrinfo hints, *res; | |
| 2103 | |
| 2104 xzero (hints); | |
| 2105 hints.ai_flags = AI_CANONNAME; | |
| 724 | 2106 #ifdef IPV6_CANONICALIZE |
| 440 | 2107 hints.ai_family = AF_UNSPEC; |
| 724 | 2108 #else |
| 2109 hints.ai_family = PF_INET; | |
| 2110 #endif | |
| 440 | 2111 hints.ai_socktype = SOCK_STREAM; |
| 2112 hints.ai_protocol = 0; | |
| 2113 if (!getaddrinfo (hostname, NULL, &hints, &res)) | |
| 2114 { | |
|
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diff
changeset
|
2115 hostname = alloca_extbytes (strlen (res->ai_canonname) + 1); |
| 440 | 2116 strcpy (hostname, res->ai_canonname); |
| 2117 | |
| 2118 freeaddrinfo (res); | |
| 2119 } | |
| 2120 # endif /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ | |
| 428 | 2121 } |
| 2122 # endif /* HAVE_SOCKETS */ | |
|
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parents:
4952
diff
changeset
|
2123 Vsystem_name = build_extstring (hostname, Qunix_host_name_encoding); |
| 428 | 2124 #endif /* HAVE_GETHOSTNAME */ |
| 2125 { | |
| 867 | 2126 Ibyte *p; |
| 428 | 2127 Bytecount i; |
| 2128 | |
| 2129 for (i = 0, p = XSTRING_DATA (Vsystem_name); | |
| 2130 i < XSTRING_LENGTH (Vsystem_name); | |
| 2131 i++, p++) | |
| 2132 { | |
| 2133 if (*p == ' ' || *p == '\t') | |
| 2134 *p = '-'; | |
| 2135 } | |
| 2136 } | |
| 2137 } | |
| 2138 | |
| 2139 | |
| 2140 /************************************************************************/ | |
| 2141 /* Emulation of select() */ | |
| 2142 /************************************************************************/ | |
| 2143 | |
| 2144 #ifndef HAVE_SELECT | |
| 2145 | |
| 2146 ERROR: XEmacs requires a working select(). | |
| 2147 | |
| 2148 #endif /* not HAVE_SELECT */ | |
| 2149 | |
| 2150 | |
| 2151 /************************************************************************/ | |
| 2152 /* Emulation of signal stuff */ | |
| 2153 /************************************************************************/ | |
| 2154 | |
| 2155 /* BSD 4.1 crap deleted. 4.2 was released in 1983, for God's sake! I | |
| 2156 can't imagine that anyone is actually running that OS any more. | |
| 2157 You can't use X under it (I think) because there's no select(). | |
| 2158 Anyway, the signal stuff has all been changed. If someone wants to | |
| 2159 get this stuff working again, look in the FSF Emacs sources. */ | |
| 2160 | |
| 2161 /* POSIX signals support - DJB */ | |
| 2162 | |
| 2163 #ifdef HAVE_SIGPROCMASK | |
| 2164 | |
| 2165 signal_handler_t | |
| 613 | 2166 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2167 { |
|
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2168 static struct sigaction new_action, old_action; |
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2169 |
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2170 /* XEmacs works better if system calls are not restarted. |
| 428 | 2171 This allows C-g to interrupt reads and writes, on most systems. |
| 2172 | |
| 2173 #### Another possibility is to just longjmp() out of the signal | |
| 2174 handler. According to W.R. Stevens, this should be OK on all | |
| 2175 systems. However, I don't want to deal with the potential | |
| 2176 evil ramifications of this at this point. */ | |
| 2177 sigemptyset (&new_action.sa_mask); | |
| 2178 new_action.sa_handler = action; | |
| 2179 #if defined (SA_INTERRUPT) /* don't restart system calls, under SunOS */ | |
| 2180 new_action.sa_flags = SA_INTERRUPT; | |
| 2181 #else | |
| 2182 new_action.sa_flags = 0; | |
| 2183 #endif | |
| 2184 sigaction (signal_number, &new_action, &old_action); | |
| 2185 return (signal_handler_t) (old_action.sa_handler); | |
| 2186 } | |
| 2187 | |
| 2188 #elif defined (HAVE_SIGBLOCK) | |
| 2189 | |
| 2190 /* We use sigvec() rather than signal() if we have it, because | |
| 2191 it lets us specify interruptible system calls. */ | |
| 2192 signal_handler_t | |
| 613 | 2193 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2194 { |
| 2195 struct sigvec vec, ovec; | |
| 2196 | |
| 2197 vec.sv_handler = action; | |
| 2198 vec.sv_mask = 0; | |
| 2199 #ifdef SV_INTERRUPT /* don't restart system calls */ | |
| 2200 vec.sv_flags = SV_INTERRUPT; | |
| 2201 #else | |
| 2202 vec.sv_flags = 0; | |
| 2203 #endif | |
| 2204 | |
| 2205 sigvec (signal_number, &vec, &ovec); | |
| 2206 | |
| 2207 return (ovec.sv_handler); | |
| 2208 } | |
| 2209 | |
| 2210 #endif /* HAVE_SIGBLOCK (HAVE_SIGPROCMASK) */ | |
| 2211 | |
| 2212 | |
| 2213 /************************************************************************/ | |
| 2214 /* Emulation of strerror() and errno support */ | |
| 2215 /************************************************************************/ | |
| 2216 | |
| 2217 #ifndef HAVE_STRERROR | |
| 2218 | |
|
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2219 #if !defined(__alpha) && !defined(MACH) && !defined(LINUX) && !defined(IRIX6_5) && !defined(__NetBSD__) |
| 428 | 2220 /* Linux added here by Raymond L. Toy <toy@alydar.crd.ge.com> for XEmacs. */ |
| 2221 /* Irix added here by gparker@sni-usa.com for XEmacs. */ | |
| 2222 /* NetBSD added here by James R Grinter <jrg@doc.ic.ac.uk> for XEmacs */ | |
| 442 | 2223 extern const char *sys_errlist[]; |
| 428 | 2224 extern int sys_nerr; |
| 2225 #endif | |
| 2226 | |
| 2227 #ifdef __NetBSD__ | |
| 2228 extern char *sys_errlist[]; | |
| 2229 extern int sys_nerr; | |
| 2230 #endif | |
| 2231 | |
| 2232 | |
| 442 | 2233 const char * |
| 428 | 2234 strerror (int errnum) |
| 2235 { | |
| 2236 if (errnum >= 0 && errnum < sys_nerr) | |
| 2237 return sys_errlist[errnum]; | |
| 442 | 2238 return ((const char *) GETTEXT ("Unknown error")); |
| 428 | 2239 } |
| 2240 | |
| 2241 #endif /* ! HAVE_STRERROR */ | |
| 2242 | |
| 2243 | |
| 2244 /************************************************************************/ | |
| 2245 /* Encapsulations of system calls */ | |
| 2246 /************************************************************************/ | |
| 2247 | |
| 2248 /***************** low-level calls ****************/ | |
| 2249 | |
| 2250 /* | |
| 2251 * On USG systems the system calls are INTERRUPTIBLE by signals | |
| 2252 * that the user program has elected to catch. Thus the system call | |
| 2253 * must be retried in these cases. To handle this without massive | |
| 2254 * changes in the source code, we remap the standard system call names | |
| 2255 * to names for our own functions in sysdep.c that do the system call | |
| 2256 * with retries. Actually, for portability reasons, it is good | |
| 2257 * programming practice, as this example shows, to limit all actual | |
| 2258 * system calls to a single occurrence in the source. Sure, this | |
| 2259 * adds an extra level of function call overhead but it is almost | |
| 2260 * always negligible. Fred Fish, Unisoft Systems Inc. | |
| 2261 */ | |
| 2262 | |
| 2263 /* Ben sez: read Dick Gabriel's essay about the Worse Is Better | |
| 2264 approach to programming and its connection to the silly | |
| 2265 interruptible-system-call business. To find it, look on | |
| 2340 | 2266 Jamie's home page (http://www.jwz.org/doc/worse-is-better.html). */ |
| 428 | 2267 |
| 771 | 2268 #ifdef WIN32_NATIVE |
| 2269 | |
| 2270 static int | |
| 2271 underlying_open_1 (const Extbyte *path, int oflag, int mode) | |
| 2272 { | |
| 2273 if (XEUNICODE_P) | |
| 2274 return _wopen ((const wchar_t *) path, oflag, mode); | |
| 2275 else | |
| 2276 return _open (path, oflag, mode); | |
| 2277 } | |
| 2278 | |
| 2279 #endif /* WIN32_NATIVE */ | |
| 2280 | |
| 2367 | 2281 /* Just call open() with normal open() semantics, with some fixups for |
| 2282 problems under Windows. */ | |
| 771 | 2283 |
| 2284 static int | |
| 2285 underlying_open (const Extbyte *path, int oflag, int mode) | |
| 2286 { | |
| 2287 #ifdef WIN32_NATIVE | |
| 2288 { | |
| 2289 /* Try to open file without _O_CREAT, to be able to write to hidden | |
| 2290 and system files. Force all file handles to be | |
| 2291 non-inheritable. */ | |
| 2292 int res = underlying_open_1 (path, (oflag & ~_O_CREAT) | _O_NOINHERIT, | |
| 2293 mode); | |
| 2294 if (res >= 0) | |
| 2295 return res; | |
| 2296 return underlying_open_1 (path, oflag | _O_NOINHERIT, mode); | |
| 2297 } | |
| 2298 #else | |
| 2299 return open (path, oflag, mode); | |
| 2300 #endif /* WIN32_NATIVE */ | |
| 2301 } | |
| 2302 | |
| 2367 | 2303 static int |
| 2304 retry_open_1 (const Extbyte *path, int oflag, int mode) | |
| 428 | 2305 { |
|
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2306 int rtnval; |
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2307 while ((rtnval = underlying_open (path, oflag, mode)) == -1 |
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2308 && (errno == EINTR)) |
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2309 DO_NOTHING; |
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2310 return rtnval; |
| 428 | 2311 } |
| 771 | 2312 |
| 2367 | 2313 /* A version of open() that retries when interrupted. Operates on |
| 2314 externally-encoded filenames. */ | |
| 2315 | |
| 2316 int XCDECL | |
| 2317 retry_open (const Extbyte *path, int oflag, ...) | |
| 2318 { | |
| 2319 int mode; | |
| 2320 va_list ap; | |
| 2321 | |
| 2322 va_start (ap, oflag); | |
| 2323 mode = va_arg (ap, int); | |
| 2324 va_end (ap); | |
| 2325 | |
| 2326 return retry_open_1 (path, oflag, mode); | |
| 2327 } | |
| 2328 | |
| 2329 #if defined (WIN32_NATIVE) && defined (WEXTTEXT_IS_WIDE) | |
| 2330 | |
| 2331 /* Like retry_open() but operate on Wexttext filenames. */ | |
| 2332 | |
| 2333 int XCDECL | |
| 2334 wext_retry_open (const Wexttext *path, int oflag, ...) | |
| 2335 { | |
| 2336 int mode; | |
| 2337 va_list ap; | |
| 2338 | |
| 2339 va_start (ap, oflag); | |
| 2340 mode = va_arg (ap, int); | |
| 2341 va_end (ap); | |
| 2342 | |
| 2343 if (!XEUNICODE_P) | |
| 2344 return retry_open_1 (WEXTTEXT_TO_MULTIBYTE (path), oflag, mode); | |
| 2345 else | |
| 2346 return retry_open_1 ((Extbyte *) path, oflag, mode); | |
| 2347 } | |
| 2348 | |
| 2349 #endif | |
| 2350 | |
| 771 | 2351 /* The basic external entry point to open(). Handles conversion to |
| 2352 external encoding, interruptions, etc. */ | |
| 2353 | |
| 872 | 2354 int XCDECL |
| 867 | 2355 qxe_open (const Ibyte *path, int oflag, ...) |
| 771 | 2356 { |
| 2357 Extbyte *pathout; | |
| 2358 int mode; | |
| 2359 va_list ap; | |
| 2360 | |
| 2361 va_start (ap, oflag); | |
| 2362 mode = va_arg (ap, int); | |
| 2363 va_end (ap); | |
| 2364 | |
| 2365 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2366 return retry_open (pathout, oflag, mode); | |
| 2367 } | |
| 2368 | |
| 2369 /* Like qxe_open, only when open() is interrupted by EINTR, check for | |
| 428 | 2370 QUIT. This allows the callers of this function to be interrupted |
| 2371 with C-g when, say, reading from named pipes. However, this should | |
| 1123 | 2372 be used with caution, as it can run random Lisp code (although it |
| 2373 cannot GC). | |
| 428 | 2374 |
| 2375 This function will not function as expected on systems where open() | |
| 2376 is not interrupted by C-g. However, the worst that can happen is | |
| 2377 the fallback to simple open(). */ | |
| 2378 int | |
| 867 | 2379 qxe_interruptible_open (const Ibyte *path, int oflag, int mode) |
| 428 | 2380 { |
| 2381 /* This function can GC */ | |
| 771 | 2382 Extbyte *pathout; |
| 2383 | |
| 2384 PATHNAME_CONVERT_OUT (path, pathout); | |
| 428 | 2385 |
| 442 | 2386 #ifdef WIN32_NATIVE |
| 440 | 2387 /* Make all handles non-inheritable */ |
| 2388 oflag |= _O_NOINHERIT; | |
| 2389 #endif | |
| 2390 | |
| 428 | 2391 for (;;) |
| 2392 { | |
| 771 | 2393 int rtnval = underlying_open (pathout, oflag, mode); |
| 428 | 2394 if (!(rtnval == -1 && errno == EINTR)) |
| 2395 return rtnval; | |
| 2396 /* open() was interrupted. Was QUIT responsible? */ | |
| 2397 QUIT; | |
| 2398 } | |
| 2399 } | |
| 2400 | |
| 2401 int | |
| 771 | 2402 retry_close (int filedes) |
| 428 | 2403 { |
| 2404 int did_retry = 0; | |
| 2405 REGISTER int rtnval; | |
| 2406 | |
| 2407 while ((rtnval = close (filedes)) == -1 | |
| 2408 && (errno == EINTR)) | |
| 2409 did_retry = 1; | |
| 2410 | |
| 2411 /* If close is interrupted SunOS 4.1 may or may not have closed the | |
| 2412 file descriptor. If it did the second close will fail with | |
| 2413 errno = EBADF. That means we have succeeded. */ | |
| 2414 if (rtnval == -1 && did_retry && errno == EBADF) | |
| 2415 return 0; | |
| 2416 | |
| 2417 return rtnval; | |
| 2418 } | |
| 771 | 2419 |
| 2420 static ssize_t | |
| 2421 retry_read_1 (int fildes, void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2422 { |
| 2423 ssize_t rtnval; | |
| 2424 | |
| 2425 while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
| 2426 && (errno == EINTR)) | |
| 2427 { | |
| 2428 if (allow_quit) | |
| 853 | 2429 QUIT; |
| 428 | 2430 } |
| 2431 return rtnval; | |
| 2432 } | |
| 2433 | |
| 2434 ssize_t | |
| 771 | 2435 retry_read (int fildes, void *buf, size_t nbyte) |
| 428 | 2436 { |
| 771 | 2437 return retry_read_1 (fildes, buf, nbyte, 0); |
| 428 | 2438 } |
| 771 | 2439 |
| 2440 static ssize_t | |
| 2441 retry_write_1 (int fildes, const void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2442 { |
| 2443 ssize_t bytes_written = 0; | |
| 442 | 2444 const char *b = (const char *) buf; |
| 428 | 2445 |
| 2446 while (nbyte > 0) | |
| 2447 { | |
| 2448 ssize_t rtnval = write (fildes, b, nbyte); | |
| 2449 | |
| 2450 if (allow_quit) | |
| 853 | 2451 QUIT; |
| 428 | 2452 |
| 2453 if (rtnval == -1) | |
| 2454 { | |
| 2455 if (errno == EINTR) | |
| 2456 continue; | |
| 2457 else | |
| 2458 return bytes_written ? bytes_written : -1; | |
| 2459 } | |
| 2460 b += rtnval; | |
| 2461 nbyte -= rtnval; | |
| 2462 bytes_written += rtnval; | |
| 2463 } | |
| 2464 return bytes_written; | |
| 2465 } | |
| 2466 | |
| 2467 ssize_t | |
| 771 | 2468 retry_write (int fildes, const void *buf, size_t nbyte) |
| 428 | 2469 { |
| 771 | 2470 return retry_write_1 (fildes, buf, nbyte, 0); |
| 428 | 2471 } |
| 771 | 2472 |
| 2473 /* Versions of read() and write() that allow quitting out of the actual | |
| 2474 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the | |
| 2475 signal handler) because that's way too losing. | |
| 2476 | |
| 2477 (#### Actually, longjmp()ing out of the signal handler may not be | |
| 2478 as losing as I thought. See qxe_reliable_signal() in sysdep.c.) */ | |
| 2479 | |
| 2480 Bytecount | |
| 2481 read_allowing_quit (int fildes, void *buf, Bytecount size) | |
| 2482 { | |
| 2483 QUIT; | |
| 2484 return retry_read_1 (fildes, buf, size, 1); | |
| 2485 } | |
| 2486 | |
| 2487 Bytecount | |
| 2488 write_allowing_quit (int fildes, const void *buf, Bytecount size) | |
| 2489 { | |
| 2490 QUIT; | |
| 2491 return retry_write_1 (fildes, buf, size, 1); | |
| 2492 } | |
| 428 | 2493 |
| 2494 | |
| 2495 /**************** stdio calls ****************/ | |
| 2496 | |
| 2497 /* There is at least some evidence that the stdio calls are interruptible | |
| 2498 just like the normal system calls, at least on some systems. In any | |
| 2499 case, it doesn't hurt to encapsulate them. */ | |
| 2500 | |
| 2501 /* #### Should also encapsulate fflush(). | |
| 2502 #### Should conceivably encapsulate getchar() etc. What a pain! */ | |
| 2503 | |
| 2504 FILE * | |
| 2367 | 2505 retry_fopen (const Extbyte *path, const Ascbyte *mode) |
| 428 | 2506 { |
| 771 | 2507 #ifdef WIN32_NATIVE |
| 2508 int fd; | |
| 2509 int oflag; | |
| 2367 | 2510 const Ascbyte *mode_save = mode; |
| 771 | 2511 |
| 2512 /* Force all file handles to be non-inheritable. This is necessary to | |
| 2513 ensure child processes don't unwittingly inherit handles that might | |
| 2514 prevent future file access. */ | |
| 2515 | |
| 2516 if (mode[0] == 'r') | |
| 2517 oflag = O_RDONLY; | |
| 2518 else if (mode[0] == 'w' || mode[0] == 'a') | |
| 2519 oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
| 2520 else | |
| 2521 return NULL; | |
| 2522 | |
| 2523 /* Only do simplistic option parsing. */ | |
| 2524 while (*++mode) | |
| 2525 if (mode[0] == '+') | |
| 2526 { | |
| 2527 oflag &= ~(O_RDONLY | O_WRONLY); | |
| 2528 oflag |= O_RDWR; | |
| 2529 } | |
| 2530 else if (mode[0] == 'b') | |
| 2531 { | |
| 2532 oflag &= ~O_TEXT; | |
| 2533 oflag |= O_BINARY; | |
| 2534 } | |
| 2535 else if (mode[0] == 't') | |
| 2536 { | |
| 2537 oflag &= ~O_BINARY; | |
| 2538 oflag |= O_TEXT; | |
| 2539 } | |
| 2540 else break; | |
| 2541 | |
| 2542 fd = underlying_open (path, oflag, 0644); | |
| 2543 if (fd < 0) | |
| 2544 return NULL; | |
| 2545 | |
| 2546 return _fdopen (fd, mode_save); | |
| 428 | 2547 #else |
|
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2548 FILE *rtnval; |
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2549 while (!(rtnval = fopen (path, mode)) && (errno == EINTR)) |
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2550 DO_NOTHING; |
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2551 return rtnval; |
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2552 #endif /* (not) WIN32_NATIVE */ |
| 428 | 2553 } |
| 771 | 2554 |
| 2555 FILE * | |
| 2367 | 2556 qxe_fopen (const Ibyte *path, const Ascbyte *mode) |
| 771 | 2557 { |
| 2558 Extbyte *pathout; | |
| 2559 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2560 return retry_fopen (pathout, mode); | |
| 2561 } | |
| 2562 | |
| 428 | 2563 int |
| 771 | 2564 retry_fclose (FILE *stream) |
| 428 | 2565 { |
| 2566 int rtnval; | |
| 2567 | |
| 2568 while ((rtnval = fclose (stream)) == EOF | |
| 2569 && (errno == EINTR)) | |
| 2570 ; | |
| 2571 return rtnval; | |
| 2572 } | |
| 771 | 2573 |
| 428 | 2574 size_t |
| 771 | 2575 retry_fread (void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2576 { |
| 2577 size_t rtnval; | |
| 2578 size_t items_read = 0; | |
| 2579 char *b = (char *) ptr; | |
| 2580 | |
| 2581 while (nitem > 0) | |
| 2582 { | |
| 2583 rtnval = fread (b, size, nitem, stream); | |
| 2584 if (rtnval == 0) | |
| 2585 { | |
| 2586 if (ferror (stream) && errno == EINTR) | |
| 2587 continue; | |
| 2588 else | |
| 2589 return items_read; | |
| 2590 } | |
| 2591 b += size*rtnval; | |
| 2592 nitem -= rtnval; | |
| 2593 items_read += rtnval; | |
| 2594 } | |
| 2595 return (items_read); | |
| 2596 } | |
| 771 | 2597 |
| 428 | 2598 size_t |
| 771 | 2599 retry_fwrite (const void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2600 { |
| 2601 size_t rtnval; | |
| 2602 size_t items_written = 0; | |
| 442 | 2603 const char *b = (const char *) ptr; |
| 428 | 2604 |
| 2605 while (nitem > 0) | |
| 2606 { | |
| 2607 rtnval = fwrite (b, size, nitem, stream); | |
| 2608 if (rtnval == 0) | |
| 2609 { | |
| 2610 if (ferror (stream) && errno == EINTR) | |
| 2611 continue; | |
| 2612 else | |
| 2613 return items_written; | |
| 2614 } | |
| 2615 b += size*rtnval; | |
| 2616 nitem -= rtnval; | |
| 2617 items_written += rtnval; | |
| 2618 } | |
| 2619 return (items_written); | |
| 2620 } | |
| 2621 | |
| 2622 /********************* directory calls *******************/ | |
| 2623 | |
| 2624 int | |
| 867 | 2625 qxe_chdir (const Ibyte *path) |
| 428 | 2626 { |
| 771 | 2627 Extbyte *pathout; |
| 2628 PATHNAME_CONVERT_OUT (path, pathout); | |
| 442 | 2629 #ifdef WIN32_NATIVE |
| 771 | 2630 if (XEUNICODE_P) |
| 2631 return _wchdir ((const wchar_t *) pathout); | |
| 2632 else | |
| 2633 return _chdir (pathout); | |
| 428 | 2634 #else |
| 771 | 2635 return chdir (pathout); |
| 428 | 2636 #endif |
| 2637 } | |
| 771 | 2638 |
| 2639 int | |
| 2340 | 2640 qxe_mkdir (const Ibyte *path, |
| 2641 #ifdef WIN32_NATIVE | |
| 2642 mode_t UNUSED (mode) | |
| 2643 #else | |
| 2644 mode_t mode | |
| 2645 #endif | |
| 2646 ) | |
| 771 | 2647 { |
| 2648 Extbyte *pathout; | |
| 2649 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2650 #ifdef WIN32_NATIVE | |
| 2651 if (XEUNICODE_P) | |
| 2652 return _wmkdir ((const wchar_t *) pathout); | |
| 2653 else | |
| 2654 return _mkdir (pathout); | |
| 2655 #else | |
| 2656 return mkdir (pathout, mode); | |
| 2657 #endif | |
| 2658 } | |
| 2659 | |
| 428 | 2660 DIR * |
| 867 | 2661 qxe_opendir (const Ibyte *filename) |
| 428 | 2662 { |
| 771 | 2663 #ifdef WIN32_NATIVE |
| 2664 return mswindows_opendir (filename); | |
| 2665 #else | |
| 428 | 2666 DIR *rtnval; |
| 771 | 2667 Extbyte *pathout; |
| 2668 PATHNAME_CONVERT_OUT (filename, pathout); | |
| 2669 | |
| 2670 while (!(rtnval = opendir (pathout)) | |
| 428 | 2671 && (errno == EINTR)) |
| 2672 ; | |
| 2673 return rtnval; | |
| 771 | 2674 #endif /* WIN32_NATIVE */ |
| 428 | 2675 } |
| 771 | 2676 |
| 428 | 2677 DIRENTRY * |
| 771 | 2678 qxe_readdir (DIR *dirp) |
| 428 | 2679 { |
| 771 | 2680 #ifdef WIN32_NATIVE |
| 2681 return mswindows_readdir (dirp); | |
| 2682 #else /* not WIN32_NATIVE */ | |
| 428 | 2683 DIRENTRY *rtnval; |
| 2684 | |
| 2685 /* Apparently setting errno is necessary on some systems? | |
| 2686 Maybe readdir() doesn't always set errno ?! */ | |
| 2687 while (!(errno = 0, rtnval = readdir (dirp)) | |
| 2688 && (errno == EINTR)) | |
| 2689 ; | |
| 2690 #ifndef MULE | |
| 2691 return rtnval; | |
| 2692 #else /* MULE */ | |
| 2693 if (rtnval == NULL) /* End of directory */ | |
| 2694 return NULL; | |
| 2695 { | |
| 442 | 2696 const Extbyte * const external_name = (const Extbyte *) rtnval->d_name; |
| 665 | 2697 Bytecount external_len = strlen (rtnval->d_name); |
| 867 | 2698 const Ibyte *internal_name; |
| 462 | 2699 Bytecount internal_len; |
| 513 | 2700 |
| 462 | 2701 TO_INTERNAL_FORMAT (DATA, (external_name, external_len), |
| 2702 ALLOCA, (internal_name, internal_len), | |
| 2703 Qfile_name); | |
| 2704 | |
| 2705 /* check for common case of ASCII filename */ | |
| 2706 if (internal_len == external_len && | |
| 2707 !memcmp (external_name, internal_name, internal_len)) | |
| 428 | 2708 return rtnval; |
| 2709 | |
| 2710 { /* Non-ASCII filename */ | |
| 867 | 2711 static Ibyte_dynarr *internal_DIRENTRY; |
| 428 | 2712 if (!internal_DIRENTRY) |
| 867 | 2713 internal_DIRENTRY = Dynarr_new (Ibyte); |
| 428 | 2714 else |
| 2715 Dynarr_reset (internal_DIRENTRY); | |
| 2716 | |
| 867 | 2717 Dynarr_add_many (internal_DIRENTRY, (Ibyte *) rtnval, |
| 428 | 2718 offsetof (DIRENTRY, d_name)); |
| 2719 | |
| 2720 | |
| 2721 Dynarr_add_many (internal_DIRENTRY, internal_name, internal_len); | |
| 444 | 2722 Dynarr_add (internal_DIRENTRY, '\0'); /* NUL-terminate */ |
| 4967 | 2723 return (DIRENTRY *) Dynarr_begin (internal_DIRENTRY); |
| 428 | 2724 } |
| 2725 } | |
| 2726 #endif /* MULE */ | |
| 771 | 2727 #endif /* WIN32_NATIVE */ |
| 428 | 2728 } |
| 771 | 2729 |
| 428 | 2730 int |
| 771 | 2731 qxe_closedir (DIR *dirp) |
| 428 | 2732 { |
| 771 | 2733 #ifdef WIN32_NATIVE |
| 2734 return mswindows_closedir (dirp); | |
| 2735 #else /* not WIN32_NATIVE */ | |
| 428 | 2736 int rtnval; |
| 2737 | |
| 2738 while ((rtnval = closedir (dirp)) == -1 | |
| 2739 && (errno == EINTR)) | |
| 2740 ; | |
| 2741 return rtnval; | |
| 771 | 2742 #endif /* WIN32_NATIVE */ |
| 428 | 2743 } |
| 771 | 2744 |
| 428 | 2745 int |
| 867 | 2746 qxe_rmdir (const Ibyte *path) |
| 771 | 2747 { |
| 2748 Extbyte *pathout; | |
| 2749 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2750 #ifdef WIN32_NATIVE | |
| 2751 if (XEUNICODE_P) | |
| 2752 return _wrmdir ((const wchar_t *) pathout); | |
| 2753 else | |
| 2754 return _rmdir (pathout); | |
| 2755 #else | |
| 2756 return rmdir (pathout); | |
| 2757 #endif | |
| 2758 } | |
| 2759 | |
| 867 | 2760 Ibyte * |
| 771 | 2761 qxe_allocating_getcwd (void) |
| 428 | 2762 { |
| 771 | 2763 #ifdef HAVE_GETCWD |
| 2764 Bytecount cwdsize = 1024; | |
| 2765 Extbyte *cwd = xnew_array (Extbyte, cwdsize); | |
| 2766 | |
| 2767 /* Many getcwd()'s can take a NULL argument and malloc() the right amount | |
| 2768 of data, but this is non-standard. */ | |
| 2769 while (1) | |
| 2770 { | |
| 2771 #ifdef WIN32_NATIVE | |
| 2772 Extbyte *ret; | |
| 2773 | |
| 2774 if (XEUNICODE_P) | |
| 2775 ret = (Extbyte *) _wgetcwd ((wchar_t *) cwd, | |
| 2776 cwdsize / sizeof (wchar_t)); | |
| 2777 else | |
| 2778 ret = _getcwd (cwd, cwdsize); | |
| 2779 | |
| 2780 if (ret) | |
| 2781 { | |
| 867 | 2782 Ibyte *retin; |
|
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2783 retin = TSTR_TO_ITEXT_MALLOC (ret); |
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2784 xfree (cwd); |
| 771 | 2785 return retin; |
| 2786 } | |
| 2787 #else | |
| 2788 Extbyte *ret = getcwd (cwd, cwdsize); | |
| 2789 if (ret) | |
| 2790 { | |
| 867 | 2791 Ibyte *retin; |
|
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|
2792 retin = EXTERNAL_TO_ITEXT_MALLOC (ret, Qfile_name); |
|
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|
2793 xfree (cwd); |
| 771 | 2794 return retin; |
| 2795 } | |
| 2796 #endif /* WIN32_NATIVE */ | |
| 2797 | |
| 2798 if (errno == ERANGE) | |
| 2799 { | |
| 2800 cwdsize *= 2; | |
| 2801 XREALLOC_ARRAY (cwd, Extbyte, cwdsize); | |
| 2802 } | |
| 2803 else | |
| 2804 { | |
|
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|
2805 xfree (cwd); |
| 771 | 2806 return NULL; |
| 2807 } | |
| 2808 } | |
| 2809 #else | |
| 4854 | 2810 Extbyte chingame_limitos_arbitrarios[PATH_MAX_TCHAR]; |
| 867 | 2811 Ibyte *ret2; |
| 771 | 2812 |
| 2813 if (!getwd (chingame_limitos_arbitrarios)) | |
| 2814 return 0; | |
|
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2815 ret2 = EXTERNAL_TO_ITEXT_MALLOC (chingame_limitos_arbitrarios, Qfile_name); |
| 771 | 2816 return ret2; |
| 2817 #endif /* HAVE_GETCWD */ | |
| 428 | 2818 } |
| 2819 | |
| 2820 /***************** file-information calls ******************/ | |
| 2821 | |
| 2822 int | |
| 867 | 2823 qxe_access (const Ibyte *path, int mode) |
| 428 | 2824 { |
| 771 | 2825 #ifdef WIN32_NATIVE |
| 2826 return mswindows_access (path, mode); | |
| 2827 #else /* not WIN32_NATIVE */ | |
| 2828 Extbyte *pathout; | |
| 2829 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2830 return access (pathout, mode); | |
| 2831 #endif /* WIN32_NATIVE */ | |
| 428 | 2832 } |
| 771 | 2833 |
| 2834 #if defined (HAVE_EACCESS) | |
| 428 | 2835 int |
| 867 | 2836 qxe_eaccess (const Ibyte *path, int mode) |
| 428 | 2837 { |
| 771 | 2838 Extbyte *pathout; |
| 2839 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2840 return eaccess (pathout, mode); | |
| 428 | 2841 } |
| 771 | 2842 #endif /* defined (HAVE_EACCESS) */ |
| 2843 | |
| 428 | 2844 int |
| 867 | 2845 qxe_lstat (const Ibyte *path, struct stat *buf) |
| 428 | 2846 { |
| 771 | 2847 /* if system does not have symbolic links, it does not have lstat. |
| 2848 In that case, use ordinary stat instead. */ | |
| 2849 #ifndef S_IFLNK | |
| 2850 return qxe_stat (path, buf); | |
| 2526 | 2851 #elif defined (WIN32_NATIVE) |
| 2852 if (mswindows_shortcuts_are_symlinks) | |
| 2853 { | |
| 2854 /* We want to resolve the directory component and leave the rest | |
| 2855 alone. */ | |
| 2856 Ibyte *dirend = find_end_of_directory_component (path, qxestrlen (path)); | |
| 2857 Bytecount len; | |
| 2858 | |
| 2859 if (dirend != path) | |
| 2860 { | |
| 2861 Ibyte *resdir; | |
| 2862 Ichar lastch; | |
| 2863 DECLARE_EISTRING (resname); | |
| 2864 DECLARE_EISTRING (dir); | |
| 2865 | |
| 2866 eicpy_raw (dir, path, dirend - path); | |
| 2867 PATHNAME_RESOLVE_LINKS (eidata (dir), resdir); | |
| 2868 eicpy_rawz (resname, resdir); | |
| 2869 lastch = eigetch_char (resname, eicharlen (resname) - 1); | |
| 2870 if (!IS_DIRECTORY_SEP (lastch)) | |
| 2871 eicat_ch (resname, '\\'); | |
| 2872 eicat_rawz (resname, dirend); | |
| 2873 path = eidata (resname); | |
| 2874 } | |
| 2875 | |
| 2876 /* However, if what we are trying to stat is a link, we need to add | |
| 2877 the .LNK so that the actual file is statted. */ | |
| 2878 len = qxestrlen (path); | |
| 2879 if (len > 4 && qxestrcasecmp_ascii (path + len - 4, ".LNK")) | |
| 2880 { | |
| 2881 DECLARE_EISTRING (name2); | |
| 2882 Ibyte *resolved; | |
| 2883 | |
| 2884 eicpy_rawz (name2, path); | |
| 2885 eicat_ascii (name2, ".LNK"); | |
| 2886 resolved = mswindows_read_link (eidata (name2)); | |
| 2887 if (resolved) | |
| 2888 { | |
|
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2889 xfree (resolved); |
| 2526 | 2890 return mswindows_stat (eidata (name2), buf); |
| 2891 } | |
| 2892 } | |
| 2893 } | |
| 2894 | |
| 2895 return mswindows_stat (path, buf); | |
| 771 | 2896 #else |
| 2897 Extbyte *pathout; | |
| 2898 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2899 return lstat (pathout, buf); | |
| 2900 #endif | |
| 428 | 2901 } |
| 771 | 2902 |
| 2903 #if defined (HAVE_READLINK) | |
| 428 | 2904 int |
| 867 | 2905 qxe_readlink (const Ibyte *path, Ibyte *buf, size_t bufsiz) |
| 428 | 2906 { |
| 771 | 2907 int retval; |
| 2908 Extbyte *pathout; | |
| 2909 | |
| 2910 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2911 retval = readlink (pathout, (char *) buf, bufsiz); | |
| 2912 if (retval < 0) | |
| 2913 return retval; | |
| 2914 { | |
| 867 | 2915 Ibyte *intbuf; |
| 771 | 2916 Bytecount tamanho; |
| 2917 | |
| 2918 TO_INTERNAL_FORMAT (DATA, (buf, retval), | |
| 2919 ALLOCA, (intbuf, tamanho), Qfile_name); | |
| 2920 /* the man page says this function does not null-terminate */ | |
| 2921 if (tamanho >= (Bytecount) bufsiz) | |
| 2922 tamanho = bufsiz; | |
| 2923 memcpy (buf, intbuf, tamanho); | |
| 2924 return tamanho; | |
| 2925 } | |
| 428 | 2926 } |
| 771 | 2927 #endif /* defined (HAVE_READLINK) */ |
| 2928 | |
| 432 | 2929 int |
| 771 | 2930 qxe_fstat (int fd, struct stat *buf) |
| 432 | 2931 { |
| 442 | 2932 #ifdef WIN32_NATIVE |
| 2933 return mswindows_fstat (fd, buf); | |
| 2934 #else | |
| 432 | 2935 return fstat (fd, buf); |
| 771 | 2936 #endif /* WIN32_NATIVE */ |
| 432 | 2937 } |
| 2938 | |
| 428 | 2939 int |
| 867 | 2940 qxe_stat (const Ibyte *path, struct stat *buf) |
| 428 | 2941 { |
| 442 | 2942 #ifdef WIN32_NATIVE |
| 2526 | 2943 Ibyte *resolved; |
| 2944 PATHNAME_RESOLVE_LINKS (path, resolved); | |
| 2945 return mswindows_stat (resolved, buf); | |
| 771 | 2946 #else /* not WIN32_NATIVE */ |
| 2947 Extbyte *pathout; | |
| 2948 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2949 return stat (pathout, buf); | |
| 2950 #endif /* WIN32_NATIVE */ | |
| 428 | 2951 } |
| 2952 | |
| 771 | 2953 |
| 428 | 2954 /****************** file-manipulation calls *****************/ |
| 2955 | |
| 2956 int | |
| 867 | 2957 qxe_chmod (const Ibyte *path, mode_t mode) |
| 428 | 2958 { |
| 771 | 2959 Extbyte *pathout; |
| 2960 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2961 #ifdef WIN32_NATIVE | |
| 2962 if (XEUNICODE_P) | |
| 2963 return _wchmod ((const wchar_t *) pathout, mode); | |
| 2964 else | |
| 2965 return _chmod (pathout, mode); | |
| 2966 #else | |
| 2967 return chmod (pathout, mode); | |
| 2968 #endif | |
| 428 | 2969 } |
| 771 | 2970 |
| 2971 #if defined (HAVE_LINK) | |
| 428 | 2972 int |
| 2957 | 2973 qxe_link (const Ibyte *existing, const Ibyte *new_) |
| 428 | 2974 { |
| 771 | 2975 #ifdef WIN32_NATIVE |
| 2957 | 2976 return mswindows_link (existing, new_); |
| 771 | 2977 #else /* not WIN32_NATIVE */ |
| 2978 Extbyte *existingout, *newout; | |
| 2979 PATHNAME_CONVERT_OUT (existing, existingout); | |
| 2957 | 2980 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 2981 return link (existingout, newout); |
| 2982 #endif /* WIN32_NATIVE */ | |
| 428 | 2983 } |
| 771 | 2984 #endif /* defined (HAVE_LINK) */ |
| 2985 | |
| 428 | 2986 int |
| 2957 | 2987 qxe_rename (const Ibyte *old, const Ibyte *new_) |
| 428 | 2988 { |
| 442 | 2989 #ifdef WIN32_NATIVE |
| 2957 | 2990 return mswindows_rename (old, new_); |
| 771 | 2991 #else /* not WIN32_NATIVE */ |
| 2992 Extbyte *oldout, *newout; | |
| 2993 PATHNAME_CONVERT_OUT (old, oldout); | |
| 2957 | 2994 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 2995 return rename (oldout, newout); |
| 442 | 2996 #endif /* WIN32_NATIVE */ |
| 428 | 2997 } |
| 771 | 2998 |
| 2999 #if defined (HAVE_SYMLINK) | |
| 428 | 3000 int |
| 867 | 3001 qxe_symlink (const Ibyte *name1, const Ibyte *name2) |
| 428 | 3002 { |
| 771 | 3003 Extbyte *name1out, *name2out; |
| 3004 PATHNAME_CONVERT_OUT (name1, name1out); | |
| 3005 PATHNAME_CONVERT_OUT (name2, name2out); | |
| 3006 return symlink (name1out, name2out); | |
| 428 | 3007 } |
| 771 | 3008 #endif /* defined (HAVE_SYMLINK) */ |
| 3009 | |
| 428 | 3010 int |
| 867 | 3011 qxe_unlink (const Ibyte *path) |
| 428 | 3012 { |
| 771 | 3013 #ifdef WIN32_NATIVE |
| 3014 return mswindows_unlink (path); | |
| 3015 #else /* not WIN32_NATIVE */ | |
| 3016 Extbyte *pathout; | |
| 3017 PATHNAME_CONVERT_OUT (path, pathout); | |
| 3018 return unlink (pathout); | |
| 3019 #endif /* WIN32_NATIVE */ | |
| 428 | 3020 } |
| 771 | 3021 |
| 3022 | |
| 3023 /****************** process calls *****************/ | |
| 3024 | |
| 428 | 3025 int |
| 867 | 3026 qxe_execve (const Ibyte *filename, Ibyte * const argv[], |
| 3027 Ibyte * const envp[]) | |
| 428 | 3028 { |
| 771 | 3029 int i, argc, envc; |
| 3030 Extbyte *pathext; | |
| 3031 Extbyte **new_argv; | |
| 3032 Extbyte **new_envp; | |
| 3033 | |
| 3034 PATHNAME_CONVERT_OUT (filename, pathext); | |
| 3035 | |
| 428 | 3036 for (argc = 0; argv[argc]; argc++) |
| 3037 ; | |
| 771 | 3038 new_argv = alloca_array (Extbyte *, argc + 1); |
| 428 | 3039 for (i = 0; i < argc; i++) |
|
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3040 new_argv[i] = ITEXT_TO_EXTERNAL (argv[i], Qcommand_argument_encoding); |
| 428 | 3041 new_argv[argc] = NULL; |
| 771 | 3042 |
| 3043 for (envc = 0; envp[envc]; envc++) | |
| 3044 ; | |
| 3045 new_envp = alloca_array (Extbyte *, envc + 1); | |
| 3046 for (i = 0; i < envc; i++) | |
|
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3047 new_envp[i] = ITEXT_TO_EXTERNAL (envp[i], Qenvironment_variable_encoding); |
| 771 | 3048 new_envp[envc] = NULL; |
| 3049 | |
| 1318 | 3050 #if defined (WIN32_NATIVE) |
| 3051 if (XEUNICODE_P) | |
| 3052 return _wexecve ((const wchar_t *) pathext, | |
| 3053 (const wchar_t * const *) new_argv, | |
| 3054 (const wchar_t * const *) new_envp); | |
| 3055 #endif | |
| 771 | 3056 return execve (pathext, new_argv, new_envp); |
| 3057 } | |
| 3058 | |
| 3059 pid_t | |
| 3060 qxe_getpid (void) | |
| 3061 { | |
| 3062 #ifdef WIN32_NATIVE | |
| 3063 return abs (getpid ()); | |
| 3064 #else | |
| 3065 return getpid (); | |
| 3066 #endif | |
| 428 | 3067 } |
| 771 | 3068 |
| 3069 | |
| 3070 /****************** passwd calls *****************/ | |
| 3071 | |
| 3072 struct passwd cached_pwd; | |
| 3073 | |
| 3074 static struct passwd * | |
| 3075 copy_in_passwd (struct passwd *pwd) | |
| 3076 { | |
| 3077 if (!pwd) | |
| 3078 return NULL; | |
| 3079 | |
| 3080 if (cached_pwd.pw_name) | |
|
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3081 xfree (cached_pwd.pw_name); |
| 771 | 3082 if (cached_pwd.pw_passwd) |
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3083 xfree (cached_pwd.pw_passwd); |
| 771 | 3084 if (cached_pwd.pw_gecos) |
|
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3085 xfree (cached_pwd.pw_gecos); |
| 771 | 3086 if (cached_pwd.pw_dir) |
|
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3087 xfree (cached_pwd.pw_dir); |
| 771 | 3088 if (cached_pwd.pw_shell) |
|
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3089 xfree (cached_pwd.pw_shell); |
| 771 | 3090 |
| 3091 cached_pwd = *pwd; | |
|
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3092 |
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3093 #define FROB(field, encoding) \ |
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3094 do \ |
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3095 { \ |
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3096 if (cached_pwd.field) \ |
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3097 cached_pwd.field = (CIbyte *) \ |
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3098 EXTERNAL_TO_ITEXT_MALLOC (cached_pwd.field, encoding); \ |
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3099 } while (0) |
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3100 |
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3101 FROB (pw_name, Quser_name_encoding); |
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3102 FROB (pw_passwd, Quser_name_encoding); |
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|
3103 FROB (pw_gecos, Quser_name_encoding); |
|
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diff
changeset
|
3104 FROB (pw_dir, Qfile_name); |
|
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diff
changeset
|
3105 FROB (pw_shell, Qfile_name); |
|
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4967
diff
changeset
|
3106 #undef FROB |
| 771 | 3107 return &cached_pwd; |
| 3108 } | |
| 3109 | |
| 3110 struct passwd * | |
| 867 | 3111 qxe_getpwnam (const Ibyte *name) |
| 771 | 3112 { |
| 3113 #ifdef WIN32_NATIVE | |
| 3114 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3115 return getpwnam (name); | |
| 3116 #else | |
|
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diff
changeset
|
3117 Extbyte *nameext = ITEXT_TO_EXTERNAL (name, Quser_name_encoding); |
| 771 | 3118 |
| 3119 return copy_in_passwd (getpwnam (nameext)); | |
| 3120 #endif /* WIN32_NATIVE */ | |
| 3121 } | |
| 3122 | |
| 3123 struct passwd * | |
| 3124 qxe_getpwuid (uid_t uid) | |
| 3125 { | |
| 3126 #ifdef WIN32_NATIVE | |
| 3127 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3128 return getpwuid (uid); | |
| 3129 #else | |
| 3130 return copy_in_passwd (getpwuid (uid)); | |
| 3131 #endif /* WIN32_NATIVE */ | |
| 3132 } | |
| 3133 | |
|
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Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
changeset
|
3134 struct group * |
|
c30fdcab7bc8
Added optional argument ID-FORMAT to file-attributes for GNU compatibility.
Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
changeset
|
3135 qxe_getgrgid (gid_t gid) |
|
c30fdcab7bc8
Added optional argument ID-FORMAT to file-attributes for GNU compatibility.
Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
changeset
|
3136 { |
|
5735
ff13c44ce0d9
Hack in rudimentary group support for WIN32 in support of Mats ID-FORMAT patch
Vin Shelton <acs@xemacs.org>
parents:
5733
diff
changeset
|
3137 #ifdef WIN32_NATIVE |
|
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Vin Shelton <acs@xemacs.org>
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5733
diff
changeset
|
3138 return NULL; |
|
ff13c44ce0d9
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Vin Shelton <acs@xemacs.org>
parents:
5733
diff
changeset
|
3139 #else |
|
ff13c44ce0d9
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Vin Shelton <acs@xemacs.org>
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5733
diff
changeset
|
3140 return getgrgid (gid); |
|
ff13c44ce0d9
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Vin Shelton <acs@xemacs.org>
parents:
5733
diff
changeset
|
3141 #endif /* WIN32_NATIVE */ |
|
5733
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Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
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|
3142 } |
|
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|
3143 |
| 771 | 3144 #ifndef WIN32_NATIVE |
| 3145 | |
| 3146 struct passwd * | |
| 3147 qxe_getpwent (void) | |
| 3148 { | |
| 3149 /* No WIN32_NATIVE version of this. */ | |
| 3150 return copy_in_passwd (getpwent ()); | |
| 3151 } | |
| 3152 | |
| 3153 #endif /* not WIN32_NATIVE */ | |
| 3154 | |
| 3155 /****************** time calls *****************/ | |
| 3156 | |
| 867 | 3157 static Ibyte *ctime_static; |
| 3158 | |
| 3159 Ibyte * | |
| 771 | 3160 qxe_ctime (const time_t *t) |
| 3161 { | |
| 3162 Extbyte *str = (Extbyte *) ctime (t); | |
| 3163 if (!str) /* can happen on MS Windows */ | |
| 867 | 3164 return (Ibyte *) "Sun Jan 01 00:00:00 1970"; |
| 771 | 3165 if (ctime_static) |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3166 xfree (ctime_static); |
|
4981
4aebb0131297
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Ben Wing <ben@xemacs.org>
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diff
changeset
|
3167 ctime_static = EXTERNAL_TO_ITEXT_MALLOC (str, Qtime_function_encoding); |
| 771 | 3168 return ctime_static; |
| 3169 } | |
| 428 | 3170 |
| 1204 | 3171 |
| 912 | 3172 /************************************************************************/ |
| 3173 /* Emulation of missing functions from wchar.h */ | |
| 3174 /************************************************************************/ | |
| 3175 | |
| 3176 #ifndef HAVE_WCHAR_H | |
| 3177 size_t | |
| 2367 | 3178 wcslen (const wchar_t *s) |
| 912 | 3179 { |
| 3700 | 3180 const wchar_t *p = s; |
| 3648 | 3181 if (s == NULL) return NULL; |
| 912 | 3182 |
| 3183 while (*p++) | |
| 3184 ; | |
| 3185 | |
| 3186 return p - s; | |
| 3187 } | |
| 3188 #endif | |
| 1204 | 3189 |
| 3190 /************************************************************************/ | |
| 3191 /* Emulation of missing functions from string.h */ | |
| 3192 /************************************************************************/ | |
| 3193 | |
| 3194 #ifndef HAVE_STRLWR | |
| 3195 char * | |
| 3196 strlwr (char *s) | |
| 3197 { | |
| 3700 | 3198 REGISTER char *c; |
| 3648 | 3199 if (s == NULL) return NULL; |
| 1271 | 3200 |
| 3201 for (c = s; *c; c++) | |
| 1204 | 3202 { |
| 1271 | 3203 *c = tolower (*c); |
| 1204 | 3204 } |
| 1271 | 3205 return s; |
| 1204 | 3206 } |
| 3207 #endif | |
| 3208 | |
| 1271 | 3209 #ifndef HAVE_STRUPR |
| 1204 | 3210 char * |
| 3211 strupr (char *s) | |
| 3212 { | |
| 1271 | 3213 REGISTER char *c; |
| 3214 | |
| 3215 for (c = s; *c; c++) | |
| 1204 | 3216 { |
| 1271 | 3217 *c = toupper (*c); |
| 1204 | 3218 } |
| 1271 | 3219 return s; |
| 1204 | 3220 } |
| 3221 #endif | |
| 912 | 3222 |
| 428 | 3223 |
| 3224 /************************************************************************/ | |
| 3225 /* Emulations of missing system calls */ | |
| 3226 /************************************************************************/ | |
| 3227 | |
| 3228 /***** (these are primarily required for USG, it seems) *****/ | |
| 3229 | |
| 3230 /* | |
| 3231 * Emulate rename using unlink/link. Note that this is | |
| 3232 * only partially correct. Also, doesn't enforce restriction | |
| 3233 * that files be of same type (regular->regular, dir->dir, etc). | |
| 3234 */ | |
| 3235 | |
| 3236 #ifndef HAVE_RENAME | |
| 3237 int | |
| 771 | 3238 rename (const Extbyte *from, const Extbyte *to) |
| 428 | 3239 { |
| 3240 if (access (from, 0) == 0) | |
| 3241 { | |
| 3242 unlink (to); | |
| 3243 if (link (from, to) == 0) | |
| 3244 if (unlink (from) == 0) | |
| 3245 return (0); | |
| 3246 } | |
| 3247 return (-1); | |
| 3248 } | |
| 3249 #endif /* HAVE_RENAME */ | |
| 3250 | |
| 3251 #ifdef HPUX | |
| 3252 #ifndef HAVE_PERROR | |
| 3253 | |
| 3254 /* HPUX curses library references perror, but as far as we know | |
| 3255 it won't be called. Anyway this definition will do for now. */ | |
| 3256 | |
| 3257 perror (void) | |
| 3258 { | |
| 3259 } | |
| 3260 | |
| 3261 #endif /* not HAVE_PERROR */ | |
| 3262 #endif /* HPUX */ | |
| 3263 | |
| 3264 #ifndef HAVE_DUP2 | |
| 3265 | |
| 3266 /* | |
| 3267 * Emulate BSD dup2. First close newd if it already exists. | |
| 3268 * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
| 3269 * until we are, then close the unsuccessful ones. | |
| 3270 */ | |
| 3271 | |
| 3272 int | |
| 3273 dup2 (int oldd, int newd) | |
| 3274 { | |
| 3275 int fd, ret; | |
| 3276 | |
| 771 | 3277 retry_close (newd); |
| 428 | 3278 |
| 3279 #ifdef F_DUPFD | |
| 3280 fd = fcntl (oldd, F_DUPFD, newd); | |
| 3281 if (fd != newd) | |
| 563 | 3282 signal_ferror_with_frob (Qfile_error, lisp_strerror (errno), |
| 3283 "can't dup2 (%i, %i)", oldd, newd); | |
| 428 | 3284 #else |
| 2957 | 3285 fd = dup (oldd); |
| 428 | 3286 if (fd == -1) |
| 3287 return -1; | |
| 2957 | 3288 if (fd == newd) |
| 3289 return newd; | |
| 3290 ret = dup2 (oldd, newd); | |
| 771 | 3291 retry_close (fd); |
| 428 | 3292 return ret; |
| 3293 #endif /* F_DUPFD */ | |
| 3294 } | |
| 3295 | |
| 3296 #endif /* not HAVE_DUP2 */ | |
| 3297 | |
| 3298 /* | |
| 3299 * Gettimeofday. Simulate as much as possible. Only accurate | |
| 3300 * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
| 3301 */ | |
| 3302 | |
| 3303 #if !defined (HAVE_GETTIMEOFDAY) | |
| 3304 | |
| 3305 int | |
| 3306 gettimeofday (struct timeval *tp, struct timezone *tzp) | |
| 3307 { | |
| 3308 extern long time (); | |
| 3309 | |
| 3310 tp->tv_sec = time ((long *)0); | |
| 3311 tp->tv_usec = 0; | |
| 3312 if (tzp != 0) | |
| 3313 tzp->tz_minuteswest = -1; | |
| 3314 return (0); | |
| 3315 } | |
| 3316 | |
| 3317 #endif /* !HAVE_GETTIMEOFDAY */ | |
| 3318 | |
| 3319 /* No need to encapsulate utime and utimes explicitly because all | |
| 3320 access to those functions goes through the following. */ | |
| 3321 | |
| 3322 int | |
| 2340 | 3323 set_file_times ( |
| 3324 #if defined (WIN32_NATIVE) || defined (HAVE_UTIME) || defined (HAVE_UTIMES) | |
| 3325 Lisp_Object path, EMACS_TIME atime, EMACS_TIME mtime | |
| 3326 #else | |
| 3327 Lisp_Object UNUSED (path), EMACS_TIME UNUSED (atime), | |
| 3328 EMACS_TIME UNUSED (mtime) | |
| 3329 #endif | |
| 3330 ) | |
| 428 | 3331 { |
| 592 | 3332 #if defined (WIN32_NATIVE) |
| 460 | 3333 struct utimbuf utb; |
| 3334 utb.actime = EMACS_SECS (atime); | |
| 3335 utb.modtime = EMACS_SECS (mtime); | |
| 592 | 3336 return mswindows_utime (path, &utb); |
| 3337 #elif defined (HAVE_UTIME) | |
| 3338 struct utimbuf utb; | |
| 3339 Extbyte *filename; | |
| 3340 utb.actime = EMACS_SECS (atime); | |
| 3341 utb.modtime = EMACS_SECS (mtime); | |
|
4981
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Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3342 LISP_PATHNAME_CONVERT_OUT (path, filename); |
| 460 | 3343 return utime (filename, &utb); |
| 3344 #elif defined (HAVE_UTIMES) | |
| 428 | 3345 struct timeval tv[2]; |
| 592 | 3346 Extbyte *filename; |
| 428 | 3347 tv[0] = atime; |
| 3348 tv[1] = mtime; | |
|
4981
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Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3349 LISP_PATHNAME_CONVERT_OUT (path, filename); |
| 428 | 3350 return utimes (filename, tv); |
| 460 | 3351 #else |
| 3352 /* No file times setting function available. */ | |
| 3353 return -1; | |
| 3354 #endif | |
| 428 | 3355 } |
| 3356 | |
| 3357 /* */ | |
| 3358 | |
| 3359 static long ticks_per_second; | |
| 3360 static long orig_user_ticks, orig_system_ticks; | |
| 3361 EMACS_TIME orig_real_time; | |
| 3362 | |
| 3363 static int process_times_available; | |
| 3364 | |
| 3365 /* Return the relative user and system tick count. We try to | |
| 3366 maintain calculations in terms of integers as long as possible | |
| 3367 for increased accuracy. */ | |
| 3368 | |
| 3369 static int | |
| 2340 | 3370 get_process_times_1 ( |
| 3371 #if defined (CLOCKS_PER_SEC) || defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) | |
| 3372 long *user_ticks, long *system_ticks | |
| 3373 #else | |
| 3374 long *UNUSED (user_ticks), long *UNUSED (system_ticks) | |
| 3375 #endif | |
| 3376 ) | |
| 428 | 3377 { |
| 442 | 3378 #if defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) |
| 428 | 3379 /* We have the POSIX times() function available. */ |
| 777 | 3380 /* #### Perhaps we should just use a configure test for times()? */ |
| 428 | 3381 struct tms tttt; |
| 3382 times (&tttt); | |
| 3383 *user_ticks = (long) tttt.tms_utime; | |
| 3384 *system_ticks = (long) tttt.tms_stime; | |
| 3385 return 1; | |
| 3386 #elif defined (CLOCKS_PER_SEC) | |
| 3387 *user_ticks = (long) clock (); | |
| 3388 *system_ticks = 0; | |
| 3389 return 1; | |
| 3390 #else | |
| 3391 return 0; | |
| 3392 #endif | |
| 3393 } | |
| 3394 | |
| 3395 void | |
| 3396 init_process_times_very_early (void) | |
| 3397 { | |
| 3398 #if defined (_SC_CLK_TCK) | |
| 3399 ticks_per_second = sysconf (_SC_CLK_TCK); | |
| 3400 #elif defined (CLK_TCK) | |
| 3401 ticks_per_second = CLK_TCK; | |
| 3402 #elif defined (CLOCKS_PER_SEC) | |
| 3403 ticks_per_second = CLOCKS_PER_SEC; | |
| 3404 #endif | |
| 3405 | |
| 3406 process_times_available = get_process_times_1 (&orig_user_ticks, | |
| 3407 &orig_system_ticks); | |
| 3408 EMACS_GET_TIME (orig_real_time); | |
| 3409 } | |
| 3410 | |
| 3411 /* Return the user and system times used up by this process so far. */ | |
| 3412 void | |
| 3413 get_process_times (double *user_time, double *system_time, double *real_time) | |
| 3414 { | |
| 3415 EMACS_TIME curr_real_time; | |
| 3416 EMACS_TIME elapsed_time; | |
| 3417 long curr_user_ticks, curr_system_ticks; | |
| 3418 | |
| 3419 EMACS_GET_TIME (curr_real_time); | |
| 3420 EMACS_SUB_TIME (elapsed_time, curr_real_time, orig_real_time); | |
| 3421 *real_time = (EMACS_SECS (elapsed_time) | |
| 3422 + ((double) EMACS_USECS (elapsed_time)) / 1000000); | |
| 3423 if (get_process_times_1 (&curr_user_ticks, &curr_system_ticks)) | |
| 3424 { | |
| 3425 *user_time = (((double) (curr_user_ticks - orig_user_ticks)) | |
| 3426 / ticks_per_second); | |
| 3427 *system_time = (((double) (curr_system_ticks - orig_system_ticks)) | |
| 3428 / ticks_per_second); | |
| 3429 } | |
| 3430 else | |
| 3431 { | |
| 3432 /* A lame OS */ | |
| 3433 *user_time = *real_time; | |
| 3434 *system_time = 0; | |
| 3435 } | |
| 3436 } | |
| 3437 | |
| 3438 #ifndef HAVE_RANDOM | |
| 3439 #ifdef random | |
| 3440 #define HAVE_RANDOM | |
| 3441 #endif | |
| 3442 #endif | |
| 3443 | |
| 3444 /* Figure out how many bits the system's random number generator uses. | |
| 3445 `random' and `lrand48' are assumed to return 31 usable bits. | |
| 3446 BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
| 3447 so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
| 3448 | |
| 3449 #ifndef RAND_BITS | |
| 3450 # ifdef HAVE_RANDOM | |
| 3451 # define RAND_BITS 31 | |
| 3452 # else /* !HAVE_RANDOM */ | |
| 3453 # ifdef HAVE_LRAND48 | |
| 3454 # define RAND_BITS 31 | |
| 3455 # define random lrand48 | |
| 3456 # else /* !HAVE_LRAND48 */ | |
| 3457 # define RAND_BITS 15 | |
| 3458 # if RAND_MAX == 32767 | |
| 3459 # define random rand | |
| 3460 # else /* RAND_MAX != 32767 */ | |
| 3461 # if RAND_MAX == 2147483647 | |
| 3462 # define random() (rand () >> 16) | |
| 3463 # else /* RAND_MAX != 2147483647 */ | |
| 3464 # ifdef USG | |
| 3465 # define random rand | |
| 3466 # else | |
| 3467 # define random() (rand () >> 16) | |
| 3468 # endif /* !BSD */ | |
| 3469 # endif /* RAND_MAX != 2147483647 */ | |
| 3470 # endif /* RAND_MAX != 32767 */ | |
| 3471 # endif /* !HAVE_LRAND48 */ | |
| 3472 # endif /* !HAVE_RANDOM */ | |
| 3473 #endif /* !RAND_BITS */ | |
| 3474 | |
| 3475 void | |
| 3476 seed_random (long arg) | |
| 3477 { | |
| 3478 #ifdef HAVE_RANDOM | |
| 3479 srandom ((unsigned int)arg); | |
| 3480 #else | |
| 3481 # ifdef HAVE_LRAND48 | |
| 3482 srand48 (arg); | |
| 3483 # else | |
| 3484 srand ((unsigned int)arg); | |
| 3485 # endif | |
| 3486 #endif | |
| 1983 | 3487 #ifdef HAVE_BIGNUM |
| 3488 bignum_random_seed ((unsigned long) arg); | |
| 3489 #endif | |
| 428 | 3490 } |
| 3491 | |
| 3492 /* | |
| 3493 * Build a full Emacs-sized word out of whatever we've got. | |
| 3494 * This suffices even for a 64-bit architecture with a 15-bit rand. | |
| 3495 */ | |
| 3496 long | |
| 3497 get_random (void) | |
| 3498 { | |
| 3499 long val = random (); | |
|
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Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
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diff
changeset
|
3500 #if FIXNUM_VALBITS > RAND_BITS |
| 428 | 3501 val = (val << RAND_BITS) ^ random (); |
|
5581
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parents:
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diff
changeset
|
3502 #if FIXNUM_VALBITS > 2*RAND_BITS |
| 428 | 3503 val = (val << RAND_BITS) ^ random (); |
|
5581
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Mechanically change INT to FIXNUM in our sources.
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diff
changeset
|
3504 #if FIXNUM_VALBITS > 3*RAND_BITS |
| 428 | 3505 val = (val << RAND_BITS) ^ random (); |
|
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diff
changeset
|
3506 #if FIXNUM_VALBITS > 4*RAND_BITS |
| 428 | 3507 val = (val << RAND_BITS) ^ random (); |
| 3508 #endif /* need at least 5 */ | |
| 3509 #endif /* need at least 4 */ | |
| 3510 #endif /* need at least 3 */ | |
| 3511 #endif /* need at least 2 */ | |
|
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Aidan Kehoe <kehoea@parhasard.net>
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5495
diff
changeset
|
3512 return val & (EMACS_INT) ((1UL << FIXNUM_VALBITS) - 1); |
| 428 | 3513 } |
| 3514 | |
| 3515 | |
| 3516 /************************************************************************/ | |
| 3517 /* Strings corresponding to defined signals */ | |
| 3518 /************************************************************************/ | |
| 3519 | |
| 2762 | 3520 #if (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) |
| 428 | 3521 |
| 442 | 3522 #if defined(WIN32_NATIVE) || defined(CYGWIN) |
| 3523 const char *sys_siglist[] = | |
| 428 | 3524 { |
|
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diff
changeset
|
3525 /* @@@begin-snarf@@@ */ |
| 428 | 3526 "bum signal!!", |
| 3527 "hangup", | |
| 3528 "interrupt", | |
| 3529 "quit", | |
| 3530 "illegal instruction", | |
| 3531 "trace trap", | |
| 3532 "iot instruction", | |
| 3533 "emt instruction", | |
| 3534 "floating point exception", | |
| 3535 "kill", | |
| 3536 "bus error", | |
| 3537 "segmentation violation", | |
| 3538 "bad argument to system call", | |
| 3539 "write on a pipe with no one to read it", | |
| 3540 "alarm clock", | |
| 3541 "software termination signal from kill", | |
| 3542 "status signal", | |
| 3543 "sendable stop signal not from tty", | |
| 3544 "stop signal from tty", | |
| 3545 "continue a stopped process", | |
| 3546 "child status has changed", | |
| 3547 "background read attempted from control tty", | |
| 3548 "background write attempted from control tty", | |
| 3549 "input record available at control tty", | |
| 3550 "exceeded CPU time limit", | |
|
4952
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Ben Wing <ben@xemacs.org>
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4854
diff
changeset
|
3551 "exceeded file size limit", |
|
19a72041c5ed
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Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3552 /* @@@end-snarf@@@ */ |
| 428 | 3553 }; |
| 3554 #endif | |
| 3555 | |
| 3556 #ifdef USG | |
| 3557 #ifdef AIX | |
| 442 | 3558 const char *sys_siglist[NSIG + 1] = |
| 428 | 3559 { |
| 3560 /* AIX has changed the signals a bit */ | |
|
4952
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Ben Wing <ben@xemacs.org>
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changeset
|
3561 /* @@@begin-snarf@@@ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3562 "bogus signal", /* 0 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3563 "hangup", /* 1 SIGHUP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3564 "interrupt", /* 2 SIGINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3565 "quit", /* 3 SIGQUIT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3566 "illegal instruction", /* 4 SIGILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3567 "trace trap", /* 5 SIGTRAP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3568 "IOT instruction", /* 6 SIGIOT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3569 "crash likely", /* 7 SIGDANGER */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3570 "floating point exception", /* 8 SIGFPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3571 "kill", /* 9 SIGKILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3572 "bus error", /* 10 SIGBUS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3573 "segmentation violation", /* 11 SIGSEGV */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3574 "bad argument to system call", /* 12 SIGSYS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3575 "write on a pipe with no one to read it", /* 13 SIGPIPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3576 "alarm clock", /* 14 SIGALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3577 "software termination signal", /* 15 SIGTERM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3578 "user defined signal 1", /* 16 SIGUSR1 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3579 "user defined signal 2", /* 17 SIGUSR2 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3580 "death of a child", /* 18 SIGCLD */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3581 "power-fail restart", /* 19 SIGPWR */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3582 "bogus signal", /* 20 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3583 "bogus signal", /* 21 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3584 "bogus signal", /* 22 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3585 "bogus signal", /* 23 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3586 "bogus signal", /* 24 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3587 "LAN I/O interrupt", /* 25 SIGAIO */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3588 "PTY I/O interrupt", /* 26 SIGPTY */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3589 "I/O intervention required", /* 27 SIGIOINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3590 /* @@@end-snarf@@@ */ |
| 428 | 3591 0 |
| 3592 }; | |
| 3593 #else /* USG, not AIX */ | |
| 442 | 3594 const char *sys_siglist[NSIG + 1] = |
| 428 | 3595 { |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3596 /* @@@begin-snarf@@@ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3597 "bogus signal", /* 0 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3598 "hangup", /* 1 SIGHUP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3599 "interrupt", /* 2 SIGINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3600 "quit", /* 3 SIGQUIT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3601 "illegal instruction", /* 4 SIGILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3602 "trace trap", /* 5 SIGTRAP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3603 "IOT instruction", /* 6 SIGIOT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3604 "EMT instruction", /* 7 SIGEMT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3605 "floating point exception", /* 8 SIGFPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3606 "kill", /* 9 SIGKILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3607 "bus error", /* 10 SIGBUS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3608 "segmentation violation", /* 11 SIGSEGV */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3609 "bad argument to system call", /* 12 SIGSYS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3610 "write on a pipe with no one to read it", /* 13 SIGPIPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3611 "alarm clock", /* 14 SIGALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3612 "software termination signal", /* 15 SIGTERM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3613 "user defined signal 1", /* 16 SIGUSR1 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3614 "user defined signal 2", /* 17 SIGUSR2 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3615 "death of a child", /* 18 SIGCLD */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3616 "power-fail restart", /* 19 SIGPWR */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3617 #ifdef sun |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3618 "window size changed", /* 20 SIGWINCH */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3619 "urgent socket condition", /* 21 SIGURG */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3620 "pollable event occurred", /* 22 SIGPOLL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3621 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3622 "user stop requested from tty", /* 24 SIGTSTP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3623 "stopped process has been continued", /* 25 SIGCONT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3624 "background tty read attempted", /* 26 SIGTTIN */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3625 "background tty write attempted", /* 27 SIGTTOU */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3626 "virtual timer expired", /* 28 SIGVTALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3627 "profiling timer expired", /* 29 SIGPROF */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3628 "exceeded cpu limit", /* 30 SIGXCPU */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3629 "exceeded file size limit", /* 31 SIGXFSZ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3630 "process's lwps are blocked", /* 32 SIGWAITING */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3631 "special signal used by thread library", /* 33 SIGLWP */ |
| 428 | 3632 #ifdef SIGFREEZE |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3633 "special signal used by CPR", /* 34 SIGFREEZE */ |
| 428 | 3634 #endif |
| 3635 #ifdef SIGTHAW | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3636 "special signal used by CPR", /* 35 SIGTHAW */ |
| 428 | 3637 #endif |
| 3638 #endif /* sun */ | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3639 /* @@@end-snarf@@@ */ |
| 428 | 3640 0 |
| 3641 }; | |
| 3642 #endif /* not AIX */ | |
| 3643 #endif /* USG */ | |
| 3644 | |
| 2762 | 3645 #endif /* (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) */ |
| 428 | 3646 |
| 3647 | |
| 3648 /************************************************************************/ | |
| 3649 /* Directory routines for systems that don't have them */ | |
| 3650 /************************************************************************/ | |
| 3651 | |
| 3652 #ifdef SYSV_SYSTEM_DIR | |
| 3653 | |
| 3654 #include <dirent.h> | |
| 3655 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3656 #if !defined(HAVE_CLOSEDIR) |
| 428 | 3657 int |
| 3658 closedir (DIR *dirp) /* stream from opendir */ | |
| 3659 { | |
| 3660 int rtnval; | |
| 3661 | |
| 771 | 3662 rtnval = retry_close (dirp->dd_fd); |
| 428 | 3663 |
| 3664 /* Some systems (like Solaris) allocate the buffer and the DIR all | |
| 3665 in one block. Why in the world are we freeing this ourselves | |
| 3666 anyway? */ | |
| 3667 #if ! (defined (sun) && defined (USG5_4)) | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3668 xfree (dirp->dd_buf); /* directory block defined in <dirent.h> */ |
| 428 | 3669 #endif |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3670 xfree (dirp); |
| 428 | 3671 return (rtnval); |
| 3672 } | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3673 #endif /* not HAVE_CLOSEDIR */ |
| 428 | 3674 #endif /* SYSV_SYSTEM_DIR */ |
| 3675 | |
| 3676 #ifdef NONSYSTEM_DIR_LIBRARY | |
| 3677 | |
| 3678 DIR * | |
| 442 | 3679 opendir (const char *filename) /* name of directory */ |
| 428 | 3680 { |
| 3681 DIR *dirp; /* -> malloc'ed storage */ | |
| 3682 int fd; /* file descriptor for read */ | |
| 3683 struct stat sbuf; /* result of fstat */ | |
| 3684 | |
| 771 | 3685 fd = open (filename, O_RDONLY); |
| 428 | 3686 if (fd < 0) |
| 3687 return 0; | |
| 3688 | |
| 3689 if (fstat (fd, &sbuf) < 0 | |
| 3690 || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
| 3691 || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
| 3692 { | |
| 771 | 3693 retry_close (fd); |
| 428 | 3694 return 0; /* bad luck today */ |
| 3695 } | |
| 3696 | |
| 3697 dirp->dd_fd = fd; | |
| 3698 dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
| 3699 | |
| 3700 return dirp; | |
| 3701 } | |
| 3702 | |
| 3703 void | |
| 3704 closedir (DIR *dirp) /* stream from opendir */ | |
| 3705 { | |
| 771 | 3706 retry_close (dirp->dd_fd); |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3707 xfree (dirp); |
| 428 | 3708 } |
| 3709 | |
| 3710 | |
| 3711 #define DIRSIZ 14 | |
| 3712 struct olddir | |
| 3713 { | |
| 3714 ino_t od_ino; /* inode */ | |
| 3715 char od_name[DIRSIZ]; /* filename */ | |
| 3716 }; | |
| 3717 | |
| 3718 static struct direct dir_static; /* simulated directory contents */ | |
| 3719 | |
| 3720 /* ARGUSED */ | |
| 3721 struct direct * | |
| 3722 readdir (DIR *dirp) /* stream from opendir */ | |
| 3723 { | |
| 3724 struct olddir *dp; /* -> directory data */ | |
| 3725 | |
| 3726 for (; ;) | |
| 3727 { | |
| 3728 if (dirp->dd_loc >= dirp->dd_size) | |
| 3729 dirp->dd_loc = dirp->dd_size = 0; | |
| 3730 | |
| 3731 if (dirp->dd_size == 0 /* refill buffer */ | |
| 771 | 3732 && (dirp->dd_size = |
| 3733 retry_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
| 428 | 3734 return 0; |
| 3735 | |
| 3736 dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
| 3737 dirp->dd_loc += sizeof (struct olddir); | |
| 3738 | |
| 3739 if (dp->od_ino != 0) /* not deleted entry */ | |
| 3740 { | |
| 3741 dir_static.d_ino = dp->od_ino; | |
| 3742 strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
| 3743 dir_static.d_name[DIRSIZ] = '\0'; | |
| 3744 dir_static.d_namlen = strlen (dir_static.d_name); | |
| 3745 dir_static.d_reclen = sizeof (struct direct) | |
| 3746 - MAXNAMLEN + 3 | |
| 3747 + dir_static.d_namlen - dir_static.d_namlen % 4; | |
| 3748 return &dir_static; /* -> simulated structure */ | |
| 3749 } | |
| 3750 } | |
| 3751 } | |
| 3752 | |
| 3753 | |
| 3754 #endif /* NONSYSTEM_DIR_LIBRARY */ | |
| 3755 | |
| 3756 | |
| 3757 /* mkdir and rmdir functions, for systems which don't have them. */ | |
| 3758 | |
| 3759 #ifndef HAVE_MKDIR | |
| 3760 /* | |
| 3761 * Written by Robert Rother, Mariah Corporation, August 1985. | |
| 3762 * | |
| 3763 * If you want it, it's yours. All I ask in return is that if you | |
| 3764 * figure out how to do this in a Bourne Shell script you send me | |
| 3765 * a copy. | |
| 3766 * sdcsvax!rmr or rmr@uscd | |
| 3767 * | |
| 3768 * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
| 3769 * subroutine. 11Mar86; hoptoad!gnu | |
| 3770 * | |
| 3771 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
| 3772 * subroutine didn't return EEXIST. It does now. | |
| 3773 */ | |
| 3774 | |
| 3775 /* | |
| 3776 * Make a directory. | |
| 3777 */ | |
| 3778 #ifdef MKDIR_PROTOTYPE | |
| 3779 MKDIR_PROTOTYPE | |
| 3780 #else | |
| 3781 int | |
| 442 | 3782 mkdir (const char *dpath, int dmode) |
| 428 | 3783 #endif |
| 3784 { | |
| 3785 int cpid, status, fd; | |
| 3786 struct stat statbuf; | |
| 3787 | |
| 442 | 3788 if (stat (dpath, &statbuf) == 0) /* we do want stat() here */ |
| 428 | 3789 { |
| 3790 errno = EEXIST; /* Stat worked, so it already exists */ | |
| 3791 return -1; | |
| 3792 } | |
| 3793 | |
| 3794 /* If stat fails for a reason other than non-existence, return error */ | |
| 3795 if (errno != ENOENT) | |
| 3796 return -1; | |
| 3797 | |
| 3798 synch_process_alive = 1; | |
| 3799 switch (cpid = fork ()) | |
| 3800 { | |
| 3801 | |
| 3802 case -1: /* Error in fork() */ | |
| 3803 return -1; /* Errno is set already */ | |
| 3804 | |
| 3805 case 0: /* Child process */ | |
| 3806 { | |
| 3807 /* | |
| 3808 * Cheap hack to set mode of new directory. Since this | |
| 3809 * child process is going away anyway, we zap its umask. | |
| 3810 * ####, this won't suffice to set SUID, SGID, etc. on this | |
| 3811 * directory. Does anybody care? | |
| 3812 */ | |
| 3813 status = umask (0); /* Get current umask */ | |
| 3814 status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
| 771 | 3815 fd = open ("/dev/null", O_RDWR); |
| 428 | 3816 if (fd >= 0) |
| 3817 { | |
| 3818 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3819 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3820 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3821 } | |
| 3822 execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); | |
| 3823 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3824 } | |
| 3825 | |
| 3826 default: /* Parent process */ | |
| 3827 wait_for_termination (cpid); | |
| 3828 } | |
| 3829 | |
| 3830 if (synch_process_death != 0 || synch_process_retcode != 0) | |
| 3831 { | |
| 3832 errno = EIO; /* We don't know why, but */ | |
| 3833 return -1; /* /bin/mkdir failed */ | |
| 3834 } | |
| 3835 | |
| 3836 return 0; | |
| 3837 } | |
| 3838 #endif /* not HAVE_MKDIR */ | |
| 3839 | |
| 3840 #ifndef HAVE_RMDIR | |
| 3841 int | |
| 442 | 3842 rmdir (const char *dpath) |
| 428 | 3843 { |
| 3844 int cpid, status, fd; | |
| 3845 struct stat statbuf; | |
| 3846 | |
| 442 | 3847 if (stat (dpath, &statbuf) != 0) /* we do want stat() here */ |
| 428 | 3848 { |
| 3849 /* Stat just set errno. We don't have to */ | |
| 3850 return -1; | |
| 3851 } | |
| 3852 | |
| 3853 synch_process_alive = 1; | |
| 3854 switch (cpid = fork ()) | |
| 3855 { | |
| 3856 | |
| 3857 case -1: /* Error in fork() */ | |
| 3858 return (-1); /* Errno is set already */ | |
| 3859 | |
| 3860 case 0: /* Child process */ | |
| 771 | 3861 fd = open ("/dev/null", O_RDWR); |
| 428 | 3862 if (fd >= 0) |
| 3863 { | |
| 3864 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3865 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3866 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3867 } | |
| 3868 execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); | |
| 3869 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3870 | |
| 3871 default: /* Parent process */ | |
| 3872 wait_for_termination (cpid); | |
| 3873 } | |
| 3874 | |
| 3875 if (synch_process_death != 0 || | |
| 3876 synch_process_retcode != 0) | |
| 3877 { | |
| 3878 errno = EIO; /* We don't know why, but */ | |
| 3879 return -1; /* /bin/rmdir failed */ | |
| 3880 } | |
| 3881 | |
| 3882 return 0; | |
| 3883 } | |
| 3884 #endif /* !HAVE_RMDIR */ | |
| 3885 | |
| 3886 | |
| 3887 /************************************************************************/ | |
| 3888 /* Misc. SunOS crap */ | |
| 3889 /************************************************************************/ | |
| 3890 | |
| 3891 #ifdef USE_DL_STUBS | |
| 3892 | |
| 3893 /* These are included on Sunos 4.1 when we do not use shared libraries. | |
| 3894 X11 libraries may refer to these functions but (we hope) do not | |
| 3895 actually call them. */ | |
| 3896 | |
| 3897 void * | |
| 3898 dlopen (void) | |
| 3899 { | |
| 3900 return 0; | |
| 3901 } | |
| 3902 | |
| 3903 void * | |
| 3904 dlsym (void) | |
| 3905 { | |
| 3906 return 0; | |
| 3907 } | |
| 3908 | |
| 3909 int | |
| 3910 dlclose (void) | |
| 3911 { | |
| 3912 return -1; | |
| 3913 } | |
| 3914 | |
| 3915 #endif /* USE_DL_STUBS */ |