Mercurial > hg > xemacs-beta
annotate src/sysdep.c @ 5803:b79e1e02bf01
Preserve extent information in the command builder code.
src/ChangeLog addition:
2014-07-14 Aidan Kehoe <kehoea@parhasard.net>
* event-stream.c:
* event-stream.c (mark_command_builder):
* event-stream.c (finalize_command_builder): Removed.
* event-stream.c (allocate_command_builder):
* event-stream.c (free_command_builder): Removed. Use
free_normal_lisp_object() instead.
* event-stream.c (echo_key_event):
* event-stream.c (regenerate_echo_keys_from_this_command_keys):
Detach all extents here.
* event-stream.c (maybe_echo_keys):
* event-stream.c (reset_key_echo):
* event-stream.c (execute_help_form):
* event-stream.c (Fnext_event):
* event-stream.c (command_builder_find_leaf_no_jit_binding):
* event-stream.c (command_builder_find_leaf):
* event-stream.c (lookup_command_event):
* events.h (struct command_builder):
Move the command builder's echo_buf to being a Lisp string rather
than a malloced Ibyte array. This allows passing through extent
information, which was previously dropped. It also simplifies the
allocation and release code for the command builder.
Rename echo_buf_index to echo_buf_fill_pointer, better reflecting
its function.
Don't rely on zero-termination (something not particularly
compatible with Lisp-level code) when showing a substring of
echo_buf that differs from that designated by
echo_buf_fill_pointer, keep a separate counter instead and use
that.
* minibuf.c:
* minibuf.c (echo_area_append):
Use the new START and END keyword arguments to #'append-message,
rather than consing a new string for basically every #'next-event
prompt displayed.
test/ChangeLog addition:
2014-07-14 Aidan Kehoe <kehoea@parhasard.net>
* automated/extent-tests.el:
Check that extent information is passed through to the echo area
correctly with #'next-event's PROMPT argument.
lisp/ChangeLog addition:
2014-07-14 Aidan Kehoe <kehoea@parhasard.net>
* simple.el (raw-append-message):
Use #'write-sequence in this, take its START and END keyword
arguments, so our callers don't have to cons as much.
* simple.el (append-message):
Pass through START and END here.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Mon, 14 Jul 2014 13:42:42 +0100 |
| parents | 427a72c6ee17 |
| children | b3824b7f5627 |
| rev | line source |
|---|---|
| 428 | 1 /* Interfaces to system-dependent kernel and library entries. |
|
5733
c30fdcab7bc8
Added optional argument ID-FORMAT to file-attributes for GNU compatibility.
Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
changeset
|
2 Copyright (C) 1985-1988, 1992-1995, 2013 Free Software Foundation, Inc. |
| 428 | 3 Copyright (C) 1995 Tinker Systems. |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
4 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2010 Ben Wing. |
| 428 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5046
diff
changeset
|
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 |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5046
diff
changeset
|
10 Free Software Foundation, either version 3 of the License, or (at your |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5046
diff
changeset
|
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 | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5046
diff
changeset
|
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) |
| 428 | 191 { |
| 192 int one = 1; | |
| 193 ioctl (fd, FIONBIO, &one); | |
| 194 } | |
| 195 #endif | |
| 196 | |
| 197 #ifdef F_SETFL | |
| 198 fcntl (fd, F_SETFL, O_NONBLOCK); | |
| 199 #endif | |
| 200 } | |
| 201 | |
| 853 | 202 #ifdef NEED_SYNC_PROCESS_CODE /* #### Used only on super-ancient systems */ |
| 203 | |
| 204 static void | |
| 814 | 205 wait_for_termination (int pid) |
| 428 | 206 { |
| 207 /* #### With the new improved SIGCHLD handling stuff, there is much | |
| 208 less danger of race conditions and some of the comments below | |
| 209 don't apply. This should be updated. */ | |
| 210 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
211 #if defined (HAVE_WAITPID) |
| 428 | 212 /* Note that, whenever any subprocess terminates (asynch. or synch.), |
| 213 the SIGCHLD handler will be called and it will call wait(). Thus | |
| 214 we cannot just call wait() ourselves, and we can't block SIGCHLD | |
| 215 and then call wait(), because then if an asynch. process dies | |
| 216 while we're waiting for our synch. process, Emacs will never | |
| 217 notice that the asynch. process died. | |
| 218 | |
| 219 So, the general approach we take is to repeatedly block until a | |
| 220 signal arrives, and then check if our process died using kill | |
| 221 (pid, 0). (We could also check the value of `synch_process_alive', | |
| 222 since the SIGCHLD handler will reset that and we know that we're | |
| 223 only being called on synchronous processes, but this approach is | |
| 224 safer. I don't trust the proper delivery of SIGCHLD. | |
| 225 | |
| 226 Note also that we cannot use any form of waitpid(). A loop with | |
| 227 WNOHANG will chew up CPU time; better to use sleep(). A loop | |
| 228 without WNOWAIT will screw up the SIGCHLD handler (actually this | |
| 229 is not true, if you duplicate the exit-status-reaping code; see | |
| 230 below). A loop with WNOWAIT will result in a race condition if | |
| 231 the process terminates between the process-status check and the | |
| 232 call to waitpid(). */ | |
| 233 | |
| 234 /* Formerly, immediate_quit was set around this function call, but | |
| 235 that could lead to problems if the QUIT happened when SIGCHLD was | |
| 236 blocked -- it would remain blocked. Yet another reason why | |
| 237 immediate_quit is a bad idea. In any case, there is no reason to | |
| 238 resort to this because either the SIGIO or the SIGALRM will stop | |
| 239 the block in EMACS_WAIT_FOR_SIGNAL(). */ | |
| 240 | |
| 241 /* Apparently there are bugs on some systems with the second method | |
| 242 used below (the EMACS_BLOCK_SIGNAL method), whereby zombie | |
| 243 processes get left around. It appears in those cases that the | |
| 244 SIGCHLD handler is never getting invoked. It's not clear whether | |
| 245 this is an Emacs bug or a kernel bug or both: on HPUX this | |
| 246 problem is observed only with XEmacs, but under Solaris 2.4 all | |
| 247 sorts of different programs have problems with zombies. The | |
| 248 method we use here does not require a working SIGCHLD (but will | |
| 249 not break if it is working), and should be safe. */ | |
| 250 /* | |
| 251 We use waitpid(), contrary to the remarks above. There is no | |
| 252 race condition, because the three situations when sigchld_handler | |
| 253 is invoked should be handled OK: | |
| 254 | |
| 255 - handler invoked before waitpid(): In this case, subprocess | |
| 256 status will be set by sigchld_handler. waitpid() here will | |
| 257 return -1 with errno set to ECHILD, which is a valid exit | |
| 258 condition. | |
| 259 | |
| 260 - handler invoked during waitpid(): as above, except that errno | |
| 261 here will be set to EINTR. This will cause waitpid() to be | |
| 262 called again, and this time it will exit with ECHILD. | |
| 263 | |
| 264 - handler invoked after waitpid(): The following code will reap | |
| 265 the subprocess. In the handler, wait() will return -1 because | |
| 266 there is no child to reap, and the handler will exit without | |
| 267 modifying child subprocess status. */ | |
| 268 int ret, status; | |
| 269 | |
| 270 /* Because the SIGCHLD handler can potentially reap the synchronous | |
| 271 subprocess, we should take care of that. */ | |
| 272 | |
| 273 /* Will stay in the do loop as long as: | |
| 274 1. Process is alive | |
| 275 2. Ctrl-G is not pressed */ | |
| 276 do | |
| 277 { | |
| 278 QUIT; | |
| 279 ret = waitpid (pid, &status, 0); | |
| 280 /* waitpid returns 0 if the process is still alive. */ | |
| 281 } | |
| 282 while (ret == 0 || (ret == -1 && errno == EINTR)); | |
| 283 | |
| 284 if (ret == pid) /* Success */ | |
| 285 /* Set synch process globals. This is can also happen | |
| 286 in sigchld_handler, and that code is duplicated. */ | |
| 287 { | |
| 288 synch_process_alive = 0; | |
| 289 if (WIFEXITED (status)) | |
| 290 synch_process_retcode = WEXITSTATUS (status); | |
| 291 else if (WIFSIGNALED (status)) | |
| 292 synch_process_death = signal_name (WTERMSIG (status)); | |
| 293 } | |
| 294 /* On exiting the loop, ret will be -1, with errno set to ECHILD if | |
| 295 the child has already been reaped, e.g. in the signal handler. */ | |
| 296 | |
| 297 /* Otherwise, we've had some error condition here. | |
| 298 Per POSIX, the only other possibilities are: | |
| 299 - EFAULT (bus error accessing arg 2) or | |
| 300 - EINVAL (incorrect arguments), | |
| 301 which are both program bugs. | |
| 302 | |
| 303 Since implementations may add their own error indicators on top, | |
| 304 we ignore it by default. */ | |
| 305 #elif defined (EMACS_BLOCK_SIGNAL) && !defined (BROKEN_WAIT_FOR_SIGNAL) && defined (SIGCHLD) | |
| 306 while (1) | |
| 307 { | |
| 308 static int wait_debugging = 0; /* Set nonzero to make following | |
| 309 function work under dbx (at least for bsd). */ | |
| 310 QUIT; | |
| 311 if (wait_debugging) | |
| 312 return; | |
| 313 | |
| 314 EMACS_BLOCK_SIGNAL (SIGCHLD); | |
| 315 /* Block SIGCHLD from happening during this check, | |
| 316 to avoid race conditions. */ | |
| 317 if (kill (pid, 0) < 0) | |
| 318 { | |
| 319 EMACS_UNBLOCK_SIGNAL (SIGCHLD); | |
| 320 return; | |
| 321 } | |
| 322 else | |
| 323 /* WARNING: Whatever this macro does *must* not allow SIGCHLD | |
| 324 to happen between the time that it's reenabled and when we | |
| 325 begin to block. Otherwise we may end up blocking for a | |
| 326 signal that has already arrived and isn't coming again. | |
| 327 Can you say "race condition"? | |
| 328 | |
| 329 I assume that the system calls sigpause() or sigsuspend() | |
| 330 to provide this atomicness. If you're getting hangs in | |
| 331 sigpause()/sigsuspend(), then your OS doesn't implement | |
| 332 this properly (this applies under hpux9, for example). | |
| 333 Try defining BROKEN_WAIT_FOR_SIGNAL. */ | |
| 334 EMACS_WAIT_FOR_SIGNAL (SIGCHLD); | |
| 335 } | |
| 853 | 336 #else /* not HAVE_WAITPID and (not EMACS_BLOCK_SIGNAL or BROKEN_WAIT_FOR_SIGNAL) */ |
| 428 | 337 /* This approach is kind of cheesy but is guaranteed(?!) to work |
| 338 for all systems. */ | |
| 339 while (1) | |
| 340 { | |
| 341 QUIT; | |
| 342 if (kill (pid, 0) < 0) | |
| 343 return; | |
| 771 | 344 stop_interrupts (); |
| 345 sleep (1); | |
| 346 start_interrupts (); | |
| 428 | 347 } |
| 348 #endif /* OS features */ | |
| 349 } | |
| 350 | |
| 853 | 351 #endif /* NEED_SYNC_PROCESS_CODE */ |
| 428 | 352 |
| 353 /* | |
| 354 * flush any pending output | |
| 355 * (may flush input as well; it does not matter the way we use it) | |
| 356 */ | |
| 357 | |
| 358 void | |
| 2286 | 359 flush_pending_output ( |
| 360 #if !defined (HAVE_TERMIOS) && (defined (TCFLSH) || defined (TIOCFLUSH)) | |
| 361 int channel | |
| 362 #else | |
| 363 int UNUSED (channel) | |
| 364 #endif | |
| 365 ) | |
| 428 | 366 { |
| 367 #ifdef HAVE_TERMIOS | |
| 368 /* If we try this, we get hit with SIGTTIN, because | |
| 369 the child's tty belongs to the child's pgrp. */ | |
| 370 #elif defined (TCFLSH) | |
| 371 ioctl (channel, TCFLSH, 1); | |
| 372 #elif defined (TIOCFLUSH) | |
| 373 int zero = 0; | |
| 374 /* 3rd arg should be ignored | |
| 375 but some 4.2 kernels actually want the address of an int | |
| 376 and nonzero means something different. */ | |
| 377 ioctl (channel, TIOCFLUSH, &zero); | |
| 378 #endif | |
| 379 } | |
| 380 | |
| 442 | 381 #ifndef WIN32_NATIVE |
| 428 | 382 /* Set up the terminal at the other end of a pseudo-terminal that |
| 383 we will be controlling an inferior through. | |
| 384 It should not echo or do line-editing, since that is done | |
| 385 in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
| 386 | |
| 387 void | |
| 388 child_setup_tty (int out) | |
| 389 { | |
| 390 struct emacs_tty s; | |
| 430 | 391 emacs_get_tty (out, &s); |
| 428 | 392 |
| 393 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 394 assert (isatty(out)); | |
| 395 s.main.c_oflag |= OPOST; /* Enable output postprocessing */ | |
| 396 s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
| 513 | 397 |
| 398 { | |
| 399 /* Disable all output delays. */ | |
| 400 tcflag_t delay_mask = 0; | |
| 428 | 401 #ifdef NLDLY |
| 513 | 402 delay_mask |= NLDLY; |
| 403 #endif | |
| 404 #ifdef CRDLY | |
| 405 delay_mask |= CRDLY; | |
| 406 #endif | |
| 407 #ifdef TABDLY | |
| 408 delay_mask |= TABDLY; /* Also disables tab expansion (Posix). */ | |
| 409 #endif | |
| 410 #ifdef BSDLY | |
| 411 delay_mask |= BSDLY; | |
| 412 #endif | |
| 413 #ifdef VTDLY | |
| 414 delay_mask |= VTDLY; | |
| 428 | 415 #endif |
| 513 | 416 #ifdef FFDLY |
| 417 delay_mask |= FFDLY; | |
| 418 #endif | |
| 419 s.main.c_oflag &= ~delay_mask; | |
| 420 } | |
| 421 | |
| 422 #ifdef OXTABS | |
| 423 /* Posix defines the TAB3 value for TABDLY to mean: expand tabs to spaces. | |
| 424 On those systems tab expansion would be disabled by the above code. | |
| 425 BSD systems use an independent flag, OXTABS. */ | |
| 426 s.main.c_oflag &= ~OXTABS; /* Disable tab expansion */ | |
| 427 #endif | |
| 428 | |
| 428 | 429 s.main.c_lflag &= ~ECHO; /* Disable echo */ |
| 430 s.main.c_lflag |= ISIG; /* Enable signals */ | |
| 431 #ifdef IUCLC | |
| 432 s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
| 433 #endif | |
| 434 #ifdef OLCUC | |
| 435 s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ | |
| 436 #endif | |
| 513 | 437 |
| 428 | 438 #if defined (CSIZE) && defined (CS8) |
| 439 s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ | |
| 440 #endif | |
| 441 #ifdef ISTRIP | |
| 442 s.main.c_iflag &= ~ISTRIP; /* Don't strip 8th bit on input */ | |
| 443 #endif | |
| 444 #if 0 | |
| 445 /* Unnecessary as long as ICANON is set */ | |
| 446 s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ | |
| 447 s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
| 448 #endif /* 0 */ | |
| 449 | |
| 450 s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
| 451 s.main.c_cc[VEOF] = 04; /* ensure that EOF is Control-D */ | |
| 452 s.main.c_cc[VERASE] = _POSIX_VDISABLE; /* disable erase processing */ | |
| 453 s.main.c_cc[VKILL] = _POSIX_VDISABLE; /* disable kill processing */ | |
| 454 | |
| 455 #ifdef HPUX | |
| 456 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
| 457 #endif /* HPUX */ | |
| 458 | |
| 459 #ifdef AIX | |
| 460 #ifndef IBMR2AIX | |
| 461 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 462 s.main.c_line = 0; | |
| 463 s.main.c_iflag &= ~ASCEDIT; | |
| 464 #endif /* IBMR2AIX */ | |
| 465 /* Also, PTY overloads NUL and BREAK. | |
| 466 don't ignore break, but don't signal either, so it looks like NUL. | |
| 467 This really serves a purpose only if running in an XTERM window | |
| 468 or via TELNET or the like, but does no harm elsewhere. */ | |
| 469 s.main.c_iflag &= ~IGNBRK; | |
| 470 s.main.c_iflag &= ~BRKINT; | |
| 471 #endif /* AIX */ | |
| 472 #ifdef SIGNALS_VIA_CHARACTERS | |
| 473 /* TTY `special characters' are used in process_send_signal | |
| 474 so set them here to something useful. */ | |
| 475 s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
| 476 s.main.c_cc[VINTR] = 'C' &037; /* Control-C */ | |
| 477 s.main.c_cc[VSUSP] = 'Z' &037; /* Control-Z */ | |
| 478 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
| 479 /* TTY `special characters' work better as signals, so disable | |
| 480 character forms */ | |
| 481 s.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 482 s.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 483 s.main.c_cc[VSUSP] = _POSIX_VDISABLE; | |
| 484 s.main.c_lflag &= ~ISIG; | |
| 485 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
| 486 s.main.c_cc[VEOL] = _POSIX_VDISABLE; | |
| 487 #if defined (CBAUD) | |
| 440 | 488 /* <mdiers> #### This is not portable. ### |
| 428 | 489 POSIX does not specify CBAUD, and 4.4BSD does not have it. |
| 490 Instead, POSIX suggests to use cfset{i,o}speed(). | |
| 491 [cf. D. Lewine, POSIX Programmer's Guide, Chapter 8: Terminal | |
| 492 I/O, O'Reilly 1991] */ | |
| 493 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
| 494 #else | |
| 495 /* <mdiers> What to do upon failure? Just ignoring rc is probably | |
| 496 not acceptable, is it? */ | |
|
5762
427a72c6ee17
Eliminate several compiler (clang) warnings.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
5735
diff
changeset
|
497 if (cfsetispeed (&s.main, B9600) == -1) |
|
427a72c6ee17
Eliminate several compiler (clang) warnings.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
5735
diff
changeset
|
498 ; /* ignore */ |
|
427a72c6ee17
Eliminate several compiler (clang) warnings.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
5735
diff
changeset
|
499 if (cfsetospeed (&s.main, B9600) == -1) |
|
427a72c6ee17
Eliminate several compiler (clang) warnings.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
5735
diff
changeset
|
500 ; /* ignore */ |
| 428 | 501 #endif /* defined (CBAUD) */ |
| 502 | |
| 503 #else /* not HAVE_TERMIO */ | |
| 504 | |
| 505 s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
| 506 | CBREAK | TANDEM); | |
| 507 s.main.sg_flags |= LPASS8; | |
| 508 s.main.sg_erase = 0377; | |
| 509 s.main.sg_kill = 0377; | |
| 510 s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ | |
| 511 | |
| 512 #endif /* not HAVE_TERMIO */ | |
| 430 | 513 emacs_set_tty (out, &s, 0); |
| 428 | 514 } |
| 442 | 515 #endif /* WIN32_NATIVE */ |
| 428 | 516 |
| 517 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
518 #if !defined (SIGTSTP) |
| 428 | 519 |
| 520 #define SIG_PARAM_TYPE int | |
| 521 | |
| 522 /* Record a signal code and the handler for it. */ | |
| 523 struct save_signal | |
| 524 { | |
| 525 int code; | |
| 872 | 526 RETSIGTYPE (XCDECL * handler) (SIG_PARAM_TYPE); |
| 428 | 527 }; |
| 528 | |
| 529 static void | |
| 530 save_signal_handlers (struct save_signal *saved_handlers) | |
| 531 { | |
| 532 while (saved_handlers->code) | |
| 533 { | |
| 534 saved_handlers->handler | |
| 872 | 535 = (RETSIGTYPE (XCDECL *) (SIG_PARAM_TYPE)) EMACS_SIGNAL (saved_handlers->code, SIG_IGN); |
| 428 | 536 saved_handlers++; |
| 537 } | |
| 538 } | |
| 539 | |
| 540 static void | |
| 541 restore_signal_handlers (struct save_signal *saved_handlers) | |
| 542 { | |
| 543 while (saved_handlers->code) | |
| 544 { | |
| 613 | 545 EMACS_SIGNAL (saved_handlers->code, saved_handlers->handler); |
| 428 | 546 saved_handlers++; |
| 547 } | |
| 548 } | |
| 549 | |
|
4760
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
550 /* Fork a subshell. */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
551 static void |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
552 sys_subshell (void) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
553 { |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
554 Lisp_Object dir; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
555 Ibyte *str = 0; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
556 Bytecount len; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
557 struct gcpro gcpro1; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
558 Ibyte *sh = 0; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
559 Extbyte *shext; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
560 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
561 /* Use our buffer's default directory for the subshell. */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
562 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
563 /* Note: These calls are spread out to insure that the return values |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
564 of the calls (which may be newly-created strings) are properly |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
565 GC-protected. */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
566 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
567 GCPRO1 (dir); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
568 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
569 dir = current_buffer->directory; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
570 /* If the current dir has no terminating slash, we'll get undesirable |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
571 results, so put the slash back. */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
572 dir = Ffile_name_as_directory (dir); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
573 dir = Funhandled_file_name_directory (dir); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
574 dir = expand_and_dir_to_file (dir, Qnil); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
575 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
576 str = alloca_ibytes (XSTRING_LENGTH (dir) + 2); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
577 len = XSTRING_LENGTH (dir); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
578 memcpy (str, XSTRING_DATA (dir), len); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
579 if (!IS_ANY_SEP (str[len - 1])) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
580 str[len++] = DIRECTORY_SEP; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
581 str[len] = 0; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
582 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
583 if (sh == 0) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
584 sh = egetenv ("SHELL"); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
585 if (sh == 0) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
586 sh = (Ibyte *) "sh"; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
587 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
588 PATHNAME_CONVERT_OUT (sh, shext); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
589 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
590 UNGCPRO; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
591 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
592 #ifdef WIN32_NATIVE |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
593 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
594 if (str) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
595 qxe_chdir (str); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
596 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
597 /* Waits for process completion */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
598 if (XEUNICODE_P ? |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
599 _wspawnlp (_P_WAIT, (const wchar_t *) shext, |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
600 (const wchar_t *) shext, NULL) != 0 : |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
601 _spawnlp (_P_WAIT, shext, shext, NULL) != 0) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
602 report_process_error ("Can't spawn subshell", Qunbound); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
603 else |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
604 return; /* we're done, no need to wait for termination */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
605 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
606 #else /* not WIN32_NATIVE */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
607 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
608 { |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
609 int pid; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
610 struct save_signal saved_handlers[5]; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
611 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
612 saved_handlers[0].code = SIGINT; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
613 saved_handlers[1].code = SIGQUIT; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
614 saved_handlers[2].code = SIGTERM; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
615 #ifdef SIGIO |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
616 saved_handlers[3].code = SIGIO; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
617 saved_handlers[4].code = 0; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
618 #else |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
619 saved_handlers[3].code = 0; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
620 #endif |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
621 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
622 pid = fork (); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
623 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
624 if (pid == -1) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
625 report_process_error ("Can't spawn subshell", Qunbound); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
626 if (pid == 0) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
627 { |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
628 if (str) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
629 qxe_chdir (str); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
630 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
631 #if !defined (NO_SUBPROCESSES) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
632 close_process_descs (); /* Close Emacs's pipes/ptys */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
633 #endif |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
634 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
635 #ifdef SET_EMACS_PRIORITY |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
636 if (emacs_priority != 0) |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
637 nice (-emacs_priority); /* Give the new shell the default priority */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
638 #endif |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
639 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
640 execlp (shext, shext, 0); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
641 retry_write (1, "Can't execute subshell", 22); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
642 _exit (1); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
643 } |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
644 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
645 save_signal_handlers (saved_handlers); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
646 synch_process_alive = 1; |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
647 wait_for_termination (pid); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
648 restore_signal_handlers (saved_handlers); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
649 } |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
650 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
651 #endif /* not WIN32_NATIVE */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
652 } |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
653 |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
654 #endif /* !defined (SIGTSTP) */ |
| 428 | 655 |
| 656 | |
| 657 | |
| 658 /* Suspend the Emacs process; give terminal to its superior. */ | |
| 659 void | |
| 660 sys_suspend (void) | |
| 661 { | |
| 662 #if defined (SIGTSTP) | |
| 663 { | |
| 664 int pgrp = EMACS_GET_PROCESS_GROUP (); | |
| 665 EMACS_KILLPG (pgrp, SIGTSTP); | |
| 666 } | |
| 667 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
668 #else /* No SIGTSTP */ |
|
4760
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
669 |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
670 /* On a system where suspending is not implemented, |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
671 instead fork a subshell and let it talk directly to the terminal |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
672 while we wait. */ |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
673 sys_subshell (); |
|
217abcf015c4
sys_subshell() is needed for WIndows native builds
Vin Shelton <acs@xemacs.org>
parents:
4759
diff
changeset
|
674 |
| 428 | 675 #endif |
| 676 } | |
| 677 | |
| 678 /* Suspend a process if possible; give terminal to its superior. */ | |
| 679 void | |
| 2340 | 680 sys_suspend_process ( |
| 681 #ifdef SIGTSTP | |
| 682 int process | |
| 683 #else | |
| 684 int UNUSED (process) | |
| 685 #endif | |
| 686 ) | |
| 428 | 687 { |
| 688 /* I don't doubt that it is possible to suspend processes on | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
689 * VMS machines, but I don't know how to do it, so... |
| 428 | 690 */ |
| 691 #if defined (SIGTSTP) | |
| 692 kill(process, SIGTSTP); | |
| 693 #endif | |
| 694 } | |
| 695 | |
| 696 | |
| 697 /* Given FD, obtain pty buffer size. When no luck, a good guess is made, | |
| 442 | 698 so that the function works even when fd is not a pty. */ |
| 428 | 699 |
| 700 int | |
| 2340 | 701 get_pty_max_bytes ( |
| 702 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
| 703 int fd | |
| 704 #else | |
| 705 int UNUSED (fd) | |
| 706 #endif | |
| 707 ) | |
| 428 | 708 { |
| 442 | 709 /* DEC OSF 4.0 fpathconf returns 255, but xemacs hangs on long shell |
| 710 input lines if we return 253. 252 is OK!. So let's leave a bit | |
| 711 of slack for the newline that xemacs will insert, and for those | |
| 712 inevitable vendor off-by-one-or-two-or-three bugs. */ | |
| 713 #define MAX_CANON_SLACK 10 | |
| 714 #define SAFE_MAX_CANON (127 - MAX_CANON_SLACK) | |
| 428 | 715 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) |
| 442 | 716 { |
| 717 int max_canon = fpathconf (fd, _PC_MAX_CANON); | |
| 718 #ifdef __hpux__ | |
| 719 /* HP-UX 10.20 fpathconf returns 768, but this results in | |
| 720 truncated input lines, while 255 works. */ | |
| 721 if (max_canon > 255) max_canon = 255; | |
| 428 | 722 #endif |
| 442 | 723 return (max_canon < 0 ? SAFE_MAX_CANON : |
| 724 max_canon > SAFE_MAX_CANON ? max_canon - MAX_CANON_SLACK : | |
| 725 max_canon); | |
| 726 } | |
| 727 #elif defined (_POSIX_MAX_CANON) | |
| 728 return (_POSIX_MAX_CANON > SAFE_MAX_CANON ? | |
| 729 _POSIX_MAX_CANON - MAX_CANON_SLACK : | |
| 730 _POSIX_MAX_CANON); | |
| 731 #else | |
| 732 return SAFE_MAX_CANON; | |
| 733 #endif | |
| 428 | 734 } |
| 735 | |
| 736 /* Figure out the eof character for the FD. */ | |
| 737 | |
| 867 | 738 Ibyte |
| 428 | 739 get_eof_char (int fd) |
| 740 { | |
| 867 | 741 const Ibyte ctrl_d = (Ibyte) '\004'; |
| 428 | 742 |
| 743 if (!isatty (fd)) | |
| 744 return ctrl_d; | |
| 745 #ifdef HAVE_TERMIOS | |
| 746 { | |
| 747 struct termios t; | |
| 748 tcgetattr (fd, &t); | |
| 749 #if 0 | |
| 750 /* What is the following line designed to do??? -mrb */ | |
| 647 | 751 if ((int) strlen ((const char *) t.c_cc) < (VEOF + 1)) |
| 428 | 752 return ctrl_d; |
| 753 else | |
| 867 | 754 return (Ibyte) t.c_cc[VEOF]; |
| 428 | 755 #endif |
| 867 | 756 return t.c_cc[VEOF] == _POSIX_VDISABLE ? ctrl_d : (Ibyte) t.c_cc[VEOF]; |
| 428 | 757 } |
| 758 #else /* ! HAVE_TERMIOS */ | |
| 759 /* On Berkeley descendants, the following IOCTL's retrieve the | |
| 760 current control characters. */ | |
| 761 #if defined (TIOCGETC) | |
| 762 { | |
| 763 struct tchars c; | |
| 764 ioctl (fd, TIOCGETC, &c); | |
| 867 | 765 return (Ibyte) c.t_eofc; |
| 428 | 766 } |
| 767 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
| 768 /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
| 769 characters. */ | |
| 770 #ifdef TCGETA | |
| 771 { | |
| 772 struct termio t; | |
| 773 ioctl (fd, TCGETA, &t); | |
| 647 | 774 if ((int) strlen ((const char *) t.c_cc) < (VINTR + 1)) |
| 428 | 775 return ctrl_d; |
| 776 else | |
| 867 | 777 return (Ibyte) t.c_cc[VINTR]; |
| 428 | 778 } |
| 779 #else /* ! defined (TCGETA) */ | |
| 780 /* Rather than complain, we'll just guess ^D, which is what | |
| 781 * earlier emacsen always used. */ | |
| 782 return ctrl_d; | |
| 783 #endif /* ! defined (TCGETA) */ | |
| 784 #endif /* ! defined (TIOCGETC) */ | |
| 785 #endif /* ! defined (HAVE_TERMIOS) */ | |
| 786 } | |
| 787 | |
| 788 /* Set the logical window size associated with descriptor FD | |
| 789 to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
| 790 | |
| 791 int | |
| 2340 | 792 set_window_size ( |
| 793 #if defined (TIOCSWINSZ) || defined (TIOCSSIZE) | |
| 794 int fd, int height, int width | |
| 795 #else | |
| 796 int UNUSED (fd), int UNUSED (height), int UNUSED (width) | |
| 797 #endif | |
| 798 ) | |
| 428 | 799 { |
| 800 #ifdef TIOCSWINSZ | |
| 801 | |
| 802 /* BSD-style. */ | |
| 803 struct winsize size; | |
| 804 size.ws_row = height; | |
| 805 size.ws_col = width; | |
| 806 | |
| 807 if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
| 808 return 0; /* error */ | |
| 809 else | |
| 810 return 1; | |
| 811 | |
| 812 #elif defined (TIOCSSIZE) | |
| 813 | |
| 814 /* SunOS - style. */ | |
| 815 struct ttysize size; | |
| 816 size.ts_lines = height; | |
| 817 size.ts_cols = width; | |
| 818 | |
| 819 if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
| 820 return 0; | |
| 821 else | |
| 822 return 1; | |
| 823 #else | |
| 824 return -1; | |
| 825 #endif | |
| 826 } | |
| 827 | |
| 828 /* Set up the proper status flags for use of a pty. */ | |
| 829 | |
| 830 void | |
| 2340 | 831 setup_pty ( |
| 832 #ifdef TIOCPKT | |
| 833 int fd | |
| 834 #else | |
| 835 int UNUSED (fd) | |
| 836 #endif | |
| 837 ) | |
| 428 | 838 { |
| 839 #ifdef TIOCPKT | |
| 840 /* In some systems (Linux through 2.0.0, at least), packet mode doesn't | |
| 841 get cleared when a pty is closed, so we need to clear it here. | |
| 842 Linux pre2.0.13 contained an attempted fix for this (from Ted Ts'o, | |
| 843 tytso@mit.edu), but apparently it messed up rlogind and telnetd, so he | |
| 844 removed the fix in pre2.0.14. - dkindred@cs.cmu.edu | |
| 845 */ | |
| 846 { | |
| 847 int off = 0; | |
| 848 ioctl (fd, TIOCPKT, (char *)&off); | |
| 849 } | |
| 535 | 850 #endif /* TIOCPKT */ |
| 428 | 851 } |
| 852 | |
| 853 | |
| 854 /************************************************************************/ | |
| 855 /* TTY control */ | |
| 856 /************************************************************************/ | |
| 857 | |
| 858 /* ------------------------------------------------------ */ | |
| 859 /* get baud rate */ | |
| 860 /* ------------------------------------------------------ */ | |
| 861 | |
| 862 /* It really makes more sense for the baud-rate to be console-specific | |
| 863 and not device-specific, but it's (at least potentially) used for output | |
| 864 decisions. */ | |
| 865 | |
| 866 void | |
| 867 init_baud_rate (struct device *d) | |
| 868 { | |
| 869 if (DEVICE_WIN_P (d) || DEVICE_STREAM_P (d)) | |
| 870 { | |
| 871 DEVICE_BAUD_RATE (d) = 38400; | |
| 872 return; | |
| 873 } | |
| 874 | |
| 875 #ifdef HAVE_TTY | |
| 876 assert (DEVICE_TTY_P (d)); | |
| 877 { | |
| 647 | 878 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 428 | 879 int input_fd = CONSOLE_TTY_DATA (con)->infd; |
| 814 | 880 #ifdef HAVE_TERMIOS |
| 428 | 881 struct termios sg; |
| 882 | |
| 883 sg.c_cflag = B9600; | |
| 884 tcgetattr (input_fd, &sg); | |
| 885 DEVICE_TTY_DATA (d)->ospeed = cfgetospeed (&sg); | |
| 886 #elif defined (HAVE_TERMIO) | |
| 887 struct termio sg; | |
| 888 | |
| 889 sg.c_cflag = B9600; | |
| 890 # ifdef HAVE_TCATTR | |
| 891 tcgetattr (input_fd, &sg); | |
| 892 # else | |
| 893 ioctl (input_fd, TCGETA, &sg); | |
| 894 # endif | |
| 895 DEVICE_TTY_DATA (d)->ospeed = sg.c_cflag & CBAUD; | |
| 896 #else /* neither TERMIOS nor TERMIO */ | |
| 897 struct sgttyb sg; | |
| 898 | |
| 899 sg.sg_ospeed = B9600; | |
| 900 if (ioctl (input_fd, TIOCGETP, &sg) < 0) | |
| 2500 | 901 ABORT (); |
| 428 | 902 DEVICE_TTY_DATA (d)->ospeed = sg.sg_ospeed; |
| 903 #endif | |
| 904 } | |
| 905 | |
| 906 DEVICE_BAUD_RATE (d) = | |
| 907 (DEVICE_TTY_DATA (d)->ospeed < countof (baud_convert) | |
| 908 ? baud_convert[DEVICE_TTY_DATA (d)->ospeed] | |
| 909 : 9600); | |
| 910 | |
| 911 if (DEVICE_BAUD_RATE (d) == 0) | |
| 912 DEVICE_BAUD_RATE (d) = 1200; | |
| 913 #endif /* HAVE_TTY */ | |
| 914 } | |
| 915 | |
| 916 | |
| 917 /* ------------------------------------------------------ */ | |
| 918 /* SIGIO control */ | |
| 919 /* ------------------------------------------------------ */ | |
| 920 | |
| 853 | 921 #if defined (SIGIO) && !defined (BROKEN_SIGIO) |
| 428 | 922 |
| 923 static void | |
| 924 init_sigio_on_device (struct device *d) | |
| 925 { | |
| 926 int filedesc = DEVICE_INFD (d); | |
| 927 | |
| 928 #if defined (FIOSSAIOOWN) | |
| 929 { /* HPUX stuff */ | |
| 930 int owner = getpid (); | |
| 931 int ioctl_status; | |
| 932 if (DEVICE_TTY_P (d)) | |
| 933 { | |
| 934 ioctl_status = ioctl (filedesc, FIOGSAIOOWN, | |
| 935 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 936 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, &owner); | |
| 937 } | |
| 938 #ifdef HAVE_WINDOW_SYSTEM | |
| 939 else if (!DEVICE_STREAM_P (d)) | |
| 940 { | |
| 941 ioctl_status = ioctl (filedesc, SIOCGPGRP, | |
| 942 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 943 ioctl_status = ioctl (filedesc, SIOCSPGRP, &owner); | |
| 944 } | |
| 945 #endif | |
| 946 } | |
| 947 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 948 DEVICE_OLD_FCNTL_OWNER (d) = fcntl (filedesc, F_GETOWN, 0); | |
| 949 fcntl (filedesc, F_SETOWN, getpid ()); | |
| 950 #endif | |
| 951 } | |
| 952 | |
| 953 static void | |
| 954 reset_sigio_on_device (struct device *d) | |
| 955 { | |
| 956 int filedesc = DEVICE_INFD (d); | |
| 957 | |
| 958 #if defined (FIOSSAIOOWN) | |
| 959 { /* HPUX stuff */ | |
| 960 int ioctl_status; | |
| 961 if (DEVICE_TTY_P (d)) | |
| 962 { | |
| 963 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, | |
| 964 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 965 } | |
| 966 #ifdef HAVE_WINDOW_SYSTEM | |
| 967 else if (!DEVICE_STREAM_P (d)) | |
| 968 { | |
| 969 ioctl_status = ioctl (filedesc, SIOCSPGRP, | |
| 970 &DEVICE_OLD_FCNTL_OWNER (d)); | |
| 971 } | |
| 972 #endif | |
| 973 } | |
| 974 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG) | |
| 975 fcntl (filedesc, F_SETOWN, DEVICE_OLD_FCNTL_OWNER (d)); | |
| 976 #endif | |
| 977 } | |
| 978 | |
| 979 static void | |
| 980 request_sigio_on_device (struct device *d) | |
| 981 { | |
| 982 int filedesc = DEVICE_INFD (d); | |
| 983 | |
| 502 | 984 /* NOTE: It appears that Linux has its own mechanism for requesting |
| 985 SIGIO, using the F_GETSIG and F_SETSIG commands to fcntl(). | |
| 986 These let you pick which signal you want sent (not just SIGIO), | |
| 987 and if you do this, you get additional info which tells you which | |
| 988 file descriptor has input ready on it. The man page says: | |
| 989 | |
| 990 Using these mechanisms, a program can implement fully | |
| 991 asynchronous I/O without using select(2) or poll(2) most | |
| 992 of the time. | |
| 993 | |
| 994 The use of O_ASYNC, F_GETOWN, F_SETOWN is specific to BSD | |
| 995 and Linux. F_GETSIG and F_SETSIG are Linux-specific. | |
| 996 POSIX has asynchronous I/O and the aio_sigevent structure | |
| 997 to achieve similar things; these are also available in | |
| 998 Linux as part of the GNU C Library (Glibc). | |
| 999 | |
| 1000 But it appears that Linux also supports O_ASYNC, so I see no | |
| 1001 particular need to switch. --ben | |
| 1002 */ | |
| 1003 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1004 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 1005 { |
| 502 | 1006 int events = 0; |
| 428 | 1007 ioctl (filedesc, I_GETSIG, &events); |
| 1008 ioctl (filedesc, I_SETSIG, events | S_INPUT); | |
| 1009 } | |
| 502 | 1010 #elif defined (O_ASYNC) |
| 1011 /* Generally FASYNC and O_ASYNC are both defined, and both equal; | |
| 1012 but let's not depend on that. O_ASYNC appears to be more | |
| 1013 standard (at least the Linux include files think so), so | |
| 1014 check it first. */ | |
| 1015 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | O_ASYNC); | |
| 428 | 1016 #elif defined (FASYNC) |
| 1017 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | FASYNC); | |
| 1018 #elif defined (FIOSSAIOSTAT) | |
| 1019 { | |
| 1020 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 1021 sockets and other devices for some bizarre reason. We guess | |
| 1022 that an X device is a socket, and tty devices aren't. We then | |
| 1023 use the following crud to do the appropriate thing. */ | |
| 1024 int on = 1; | |
| 1025 int ioctl_status; /* ####DG: check if IOCTL succeeds here. */ | |
| 1026 | |
| 1027 if (DEVICE_TTY_P (d)) | |
| 1028 { | |
| 1029 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &on); | |
| 1030 } | |
| 1031 #ifdef HAVE_WINDOW_SYSTEM | |
| 1032 else if (!DEVICE_STREAM_P (d)) | |
| 1033 { | |
| 1034 ioctl_status = ioctl (filedesc, FIOASYNC, &on); | |
| 1035 } | |
| 1036 #endif | |
| 1037 } | |
| 1038 #elif defined (FIOASYNC) | |
| 1039 { | |
| 1040 int on = 1; | |
| 1041 ioctl (filedesc, FIOASYNC, &on); | |
| 1042 } | |
| 1043 #endif | |
| 1044 } | |
| 1045 | |
| 1046 static void | |
| 1047 unrequest_sigio_on_device (struct device *d) | |
| 1048 { | |
| 1049 int filedesc = DEVICE_INFD (d); | |
| 1050 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1051 #if defined (I_SETSIG) && !defined (HPUX11) && !defined (LINUX) |
| 428 | 1052 { |
| 502 | 1053 int events = 0; |
| 428 | 1054 ioctl (filedesc, I_GETSIG, &events); |
| 1055 ioctl (filedesc, I_SETSIG, events & ~S_INPUT); | |
| 1056 } | |
| 502 | 1057 #elif defined (O_ASYNC) |
| 1058 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~O_ASYNC); | |
| 428 | 1059 #elif defined (FASYNC) |
| 1060 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~FASYNC); | |
| 1061 #elif defined (FIOSSAIOSTAT) | |
| 1062 { | |
| 1063 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for | |
| 1064 sockets and other devices for some bizarre reason. We guess | |
| 1065 that an X device is a socket, and tty devices aren't. We then | |
| 1066 use the following crud to do the appropriate thing. */ | |
| 1067 | |
| 1068 int off = 0; | |
| 1069 int ioctl_status; | |
| 1070 | |
| 1071 /* See comment for request_sigio_on_device */ | |
| 1072 | |
| 1073 if (DEVICE_TTY_P (d)) | |
| 1074 { | |
| 1075 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &off); | |
| 1076 } | |
| 1077 else | |
| 1078 { | |
| 1079 ioctl_status = ioctl (filedesc, FIOASYNC, &off); | |
| 1080 } | |
| 1081 } | |
| 1082 #elif defined (FIOASYNC) | |
| 1083 { | |
| 1084 int off = 0; | |
| 1085 ioctl (filedesc, FIOASYNC, &off); | |
| 1086 } | |
| 1087 #endif | |
| 1088 } | |
| 1089 | |
| 1090 void | |
| 1091 request_sigio (void) | |
| 1092 { | |
| 1093 Lisp_Object devcons, concons; | |
| 1094 | |
| 1095 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1096 { | |
| 1097 struct device *d; | |
| 1098 | |
| 1099 d = XDEVICE (XCAR (devcons)); | |
| 1100 | |
| 1101 if (!DEVICE_STREAM_P (d)) | |
| 1102 request_sigio_on_device (d); | |
| 1103 } | |
| 1104 } | |
| 1105 | |
| 1106 void | |
| 1107 unrequest_sigio (void) | |
| 1108 { | |
| 1109 Lisp_Object devcons, concons; | |
| 1110 | |
| 1111 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1112 { | |
| 1113 struct device *d; | |
| 1114 | |
| 1115 d = XDEVICE (XCAR (devcons)); | |
| 1116 | |
| 1117 if (!DEVICE_STREAM_P (d)) | |
| 1118 unrequest_sigio_on_device (d); | |
| 1119 } | |
| 1120 } | |
| 1121 | |
| 1122 #endif /* SIGIO */ | |
| 1123 | |
| 1124 /* ------------------------------------------------------ */ | |
| 1125 /* Changing Emacs's process group */ | |
| 1126 /* ------------------------------------------------------ */ | |
| 1127 | |
| 1128 /* Saving and restoring the process group of Emacs's terminal. */ | |
| 1129 | |
| 1130 /* On some systems, apparently (?!) Emacs must be in its own process | |
| 1131 group in order to receive SIGIO correctly. On other systems | |
| 1132 (e.g. Solaris), it's not required and doing it makes things | |
| 1133 get fucked up. So, we only do it when | |
| 1134 SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP is defined. Basically, | |
| 1135 this is only required for BSD 4.2 systems. (Actually, I bet | |
| 1136 we don't have to do this at all -- those systems also | |
| 1137 required interrupt input, which we don't support.) | |
| 1138 | |
| 1139 If Emacs was in its own process group (i.e. inherited_pgroup == | |
| 1140 getpid ()), then we know we're running under a shell with job | |
| 1141 control (Emacs would never be run as part of a pipeline). | |
| 1142 Everything is fine. | |
| 1143 | |
| 1144 If Emacs was not in its own process group, then we know we're | |
| 1145 running under a shell (or a caller) that doesn't know how to | |
| 1146 separate itself from Emacs (like sh). Emacs must be in its own | |
| 1147 process group in order to receive SIGIO correctly. In this | |
| 1148 situation, we put ourselves in our own pgroup, forcibly set the | |
| 1149 tty's pgroup to our pgroup, and make sure to restore and reinstate | |
| 1150 the tty's pgroup just like any other terminal setting. If | |
| 1151 inherited_group was not the tty's pgroup, then we'll get a | |
| 1152 SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
| 1153 it goes foreground in the future, which is what should happen. */ | |
| 1154 | |
| 1155 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1156 | |
| 442 | 1157 static pid_t inherited_pgroup; |
| 1158 static pid_t inherited_tty_pgroup; | |
| 428 | 1159 |
| 1160 #endif | |
| 1161 | |
| 1162 void | |
| 1163 munge_tty_process_group (void) | |
| 1164 { | |
| 1165 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1166 if (noninteractive) | |
| 1167 return; | |
| 1168 | |
| 1169 /* Only do this munging if we have a device on the controlling | |
| 1170 terminal. See the large comment below. */ | |
| 1171 | |
| 1172 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1173 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1174 { | |
| 1175 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 442 | 1176 pid_t me = getpid (); |
| 428 | 1177 EMACS_BLOCK_SIGNAL (SIGTTOU); |
| 1178 EMACS_SET_TTY_PROCESS_GROUP (fd, &me); | |
| 1179 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1180 retry_close (fd); |
| 428 | 1181 } |
| 1182 #endif | |
| 1183 } | |
| 1184 | |
| 1185 /* Split off the foreground process group to Emacs alone. | |
| 1186 When we are in the foreground, but not started in our own process | |
| 1187 group, redirect the TTY to point to our own process group. We need | |
| 1188 to be in our own process group to receive SIGIO properly. */ | |
| 1189 static void | |
| 1190 munge_process_groups (void) | |
| 1191 { | |
| 1192 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1193 if (noninteractive) | |
| 1194 return; | |
| 1195 | |
| 1196 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1197 | |
| 1198 munge_tty_process_group (); | |
| 1199 #endif | |
| 1200 } | |
| 1201 | |
| 1202 void | |
| 1203 unmunge_tty_process_group (void) | |
| 1204 { | |
| 1205 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1206 { | |
| 1207 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1208 EMACS_BLOCK_SIGNAL (SIGTTOU); | |
| 1209 EMACS_SET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 1210 EMACS_UNBLOCK_SIGNAL (SIGTTOU); | |
| 771 | 1211 retry_close (fd); |
| 428 | 1212 } |
| 1213 #endif | |
| 1214 } | |
| 1215 | |
| 1216 /* Set the tty to our original foreground group. | |
| 1217 Also restore the original process group (put us back into sh's | |
| 1218 process group), so that ^Z will suspend both us and sh. */ | |
| 1219 static void | |
| 1220 unmunge_process_groups (void) | |
| 1221 { | |
| 1222 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1223 if (noninteractive) | |
| 1224 return; | |
| 1225 | |
| 1226 unmunge_tty_process_group (); | |
| 1227 | |
| 1228 EMACS_SET_PROCESS_GROUP (inherited_pgroup); | |
| 1229 #endif | |
| 1230 } | |
| 1231 | |
| 1232 /* According to some old wisdom, we need to be in a separate process | |
| 1233 group for SIGIO to work correctly (at least on some systems ...). | |
| 1234 So go ahead and put ourselves into our own process group. This | |
| 1235 will fail if we're already in our own process group, but who cares. | |
| 1236 Also record whether we were in our own process group. (In general, | |
| 1237 we will already be in our own process group if we were started from | |
| 1238 a job-control shell like csh, but not if we were started from sh). | |
| 1239 | |
| 1240 If we succeeded in changing our process group, then we will no | |
| 1241 longer be in the foreground process group of our controlling | |
| 1242 terminal. Therefore, if we have a console open onto this terminal, | |
| 1243 we have to change the controlling terminal's foreground process | |
| 1244 group (otherwise we will get stopped with a SIGTTIN signal when | |
| 1245 attempting to read from the terminal). It's important, | |
| 1246 however, that we do this *only* when we have a console open onto | |
| 1247 the terminal. It's a decidedly bad idea to do so otherwise, | |
| 1248 especially if XEmacs was started from the background. */ | |
| 1249 | |
| 1250 void | |
| 1251 init_process_group (void) | |
| 1252 { | |
| 1253 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP | |
| 1254 if (! noninteractive) | |
| 1255 { | |
| 1256 int fd = open ("/dev/tty", O_RDWR, 0); | |
| 1257 inherited_pgroup = EMACS_GET_PROCESS_GROUP (); | |
| 1258 EMACS_GET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup); | |
| 771 | 1259 retry_close (fd); |
| 428 | 1260 EMACS_SEPARATE_PROCESS_GROUP (); |
| 1261 } | |
| 1262 #endif | |
| 1263 } | |
| 1264 | |
| 1265 void | |
| 1266 disconnect_controlling_terminal (void) | |
| 1267 { | |
| 1268 # ifdef HAVE_SETSID | |
| 1269 /* Controlling terminals are attached to a session. | |
| 1270 Create a new session for us; it will have no controlling | |
| 1271 terminal. This also, of course, puts us in our own | |
| 1272 process group. */ | |
| 1273 setsid (); | |
| 1274 # else | |
| 1275 /* Put us in our own process group. */ | |
| 1276 EMACS_SEPARATE_PROCESS_GROUP (); | |
| 1277 # if defined (TIOCNOTTY) | |
| 1278 /* This is the older way of disconnecting the controlling | |
| 1279 terminal, on 4.3 BSD. We must open /dev/tty; using | |
| 1280 filedesc 0 is not sufficient because it could be | |
| 1281 something else (e.g. our stdin was redirected to | |
| 1282 another terminal). | |
| 1283 */ | |
| 1284 { | |
| 1285 int j = open ("/dev/tty", O_RDWR, 0); | |
| 1286 ioctl (j, TIOCNOTTY, 0); | |
| 771 | 1287 retry_close (j); |
| 428 | 1288 } |
| 1289 # endif /* TIOCNOTTY */ | |
| 1290 /* | |
| 1291 On systems without TIOCNOTTY and without | |
| 1292 setsid(), we don't need to do anything more to | |
| 1293 disconnect our controlling terminal. Here is | |
| 1294 what the man page for termio(7) from a SYSV 3.2 | |
| 1295 system says: | |
| 1296 | |
| 1297 "The first terminal file opened by the process group leader | |
| 1298 of a terminal file not already associated with a process | |
| 1299 group becomes the control terminal for that process group. | |
| 1300 The control terminal plays a special role in handling quit | |
| 1301 and interrupt signals, as discussed below. The control | |
| 1302 terminal is inherited by a child process during a fork(2). | |
| 1303 A process can break this association by changing its process | |
| 1304 group using setpgrp(2)." | |
| 1305 | |
| 1306 */ | |
| 1307 # endif /* not HAVE_SETSID */ | |
| 1308 } | |
| 1309 | |
| 1310 | |
| 1311 /* ------------------------------------------------------ */ | |
| 1312 /* Getting and setting emacs_tty structures */ | |
| 1313 /* ------------------------------------------------------ */ | |
| 1314 | |
| 1315 /* It's wrong to encase these into #ifdef HAVE_TTY because we need | |
| 1316 them for child TTY processes. */ | |
| 1317 /* However, this does break NT support while we don't do child TTY processes */ | |
| 442 | 1318 #ifndef WIN32_NATIVE |
| 428 | 1319 |
| 1320 /* Set *TC to the parameters associated with the terminal FD. | |
| 1321 Return zero if all's well, or -1 if we ran into an error we | |
| 1322 couldn't deal with. */ | |
| 1323 int | |
| 1324 emacs_get_tty (int fd, struct emacs_tty *settings) | |
| 1325 { | |
| 1326 /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
| 1327 #ifdef HAVE_TCATTR | |
| 1328 /* We have those nifty POSIX tcmumbleattr functions. */ | |
| 1329 if (tcgetattr (fd, &settings->main) < 0) | |
| 1330 return -1; | |
| 1331 | |
| 1332 #elif defined HAVE_TERMIO | |
| 1333 /* The SYSV-style interface? */ | |
| 1334 if (ioctl (fd, TCGETA, &settings->main) < 0) | |
| 1335 return -1; | |
| 1336 | |
| 814 | 1337 #else |
| 428 | 1338 /* I give up - I hope you have the BSD ioctls. */ |
| 1339 if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
| 1340 return -1; | |
| 1341 #endif /* HAVE_TCATTR */ | |
| 1342 | |
| 1343 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1344 #ifdef HAVE_LTCHARS | |
| 1345 if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) | |
| 1346 return -1; | |
| 1347 #endif | |
| 1348 | |
| 1349 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1350 #ifdef HAVE_TCHARS | |
| 1351 if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 | |
| 1352 || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
| 1353 return -1; | |
| 1354 #endif | |
| 1355 | |
| 1356 /* We have survived the tempest. */ | |
| 1357 return 0; | |
| 1358 } | |
| 1359 | |
| 1360 /* Set the parameters of the tty on FD according to the contents of | |
| 1361 *SETTINGS. If FLUSHP is non-zero, we discard input. | |
| 430 | 1362 Return 0 if all went well, and -1 if anything failed. |
| 1363 #### All current callers use FLUSHP == 0. */ | |
| 428 | 1364 |
| 1365 int | |
| 1366 emacs_set_tty (int fd, struct emacs_tty *settings, int flushp) | |
| 1367 { | |
| 1368 /* Set the primary parameters - baud rate, character size, etcetera. */ | |
| 1369 #ifdef HAVE_TCATTR | |
| 1370 int i; | |
| 1371 /* We have those nifty POSIX tcmumbleattr functions. | |
| 1372 William J. Smith <wjs@wiis.wang.com> writes: | |
| 1373 "POSIX 1003.1 defines tcsetattr() to return success if it was | |
| 1374 able to perform any of the requested actions, even if some | |
| 1375 of the requested actions could not be performed. | |
| 1376 We must read settings back to ensure tty setup properly. | |
| 1377 AIX requires this to keep tty from hanging occasionally." */ | |
| 1378 /* This makes sure that we don't loop indefinitely in here. */ | |
| 1379 for (i = 0 ; i < 10 ; i++) | |
| 1380 if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) | |
| 1381 { | |
| 1382 if (errno == EINTR) | |
| 1383 continue; | |
| 1384 else | |
| 1385 return -1; | |
| 1386 } | |
| 1387 else | |
| 1388 { | |
| 2957 | 1389 struct termios new_; |
| 428 | 1390 |
| 1391 /* Get the current settings, and see if they're what we asked for. */ | |
| 2957 | 1392 tcgetattr (fd, &new_); |
| 428 | 1393 /* We cannot use memcmp on the whole structure here because under |
| 1394 * aix386 the termios structure has some reserved field that may | |
| 1395 * not be filled in. | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1396 * FIXME: Now that aix386 is gone, can we memcmp the whole structure? |
| 428 | 1397 */ |
| 2957 | 1398 if ( new_.c_iflag == settings->main.c_iflag |
| 1399 && new_.c_oflag == settings->main.c_oflag | |
| 1400 && new_.c_cflag == settings->main.c_cflag | |
| 1401 && new_.c_lflag == settings->main.c_lflag | |
| 1402 && memcmp(new_.c_cc, settings->main.c_cc, NCCS) == 0) | |
| 428 | 1403 break; |
| 1404 else | |
| 1405 continue; | |
| 1406 } | |
| 1407 #elif defined HAVE_TERMIO | |
| 1408 /* The SYSV-style interface? */ | |
| 1409 if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) | |
| 1410 return -1; | |
| 1411 | |
| 814 | 1412 #else |
| 428 | 1413 /* I give up - I hope you have the BSD ioctls. */ |
| 1414 if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
| 1415 return -1; | |
| 1416 #endif /* HAVE_TCATTR */ | |
| 1417 | |
| 1418 /* Suivant - Do we have to get struct ltchars data? */ | |
| 1419 #ifdef HAVE_LTCHARS | |
| 1420 if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) | |
| 1421 return -1; | |
| 1422 #endif | |
| 1423 | |
| 1424 /* How about a struct tchars and a wordful of lmode bits? */ | |
| 1425 #ifdef HAVE_TCHARS | |
| 1426 if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 | |
| 1427 || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
| 1428 return -1; | |
| 1429 #endif | |
| 1430 | |
| 1431 /* We have survived the tempest. */ | |
| 1432 return 0; | |
| 1433 } | |
| 1434 | |
| 442 | 1435 #endif /* WIN32_NATIVE */ |
| 428 | 1436 |
| 1437 /* ------------------------------------------------------ */ | |
| 1438 /* Initializing a device */ | |
| 1439 /* ------------------------------------------------------ */ | |
| 1440 | |
| 1441 #ifdef HAVE_TTY | |
| 1442 | |
| 1443 #if defined (TIOCGLTC) && defined (HAVE_LTCHARS) /* HAVE_LTCHARS */ | |
| 1444 static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; | |
| 1445 #endif | |
| 1446 #ifdef TIOCGETC /* HAVE_TCHARS */ | |
| 1447 #ifdef HAVE_TCHARS | |
| 1448 static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; | |
| 1449 #endif | |
| 1450 #endif | |
| 1451 | |
| 1452 static void | |
| 1453 tty_init_sys_modes_on_device (struct device *d) | |
| 1454 { | |
| 1455 struct emacs_tty tty; | |
| 2286 | 1456 int input_fd; |
| 428 | 1457 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1458 | |
| 1459 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
| 1460 | |
| 430 | 1461 emacs_get_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty); |
| 428 | 1462 tty = CONSOLE_TTY_DATA (con)->old_tty; |
| 1463 | |
| 1464 con->tty_erase_char = Qnil; | |
| 1465 | |
| 1466 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1467 /* after all those years... */ | |
| 1468 con->tty_erase_char = make_char (tty.main.c_cc[VERASE]); | |
| 1469 tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ | |
| 1470 tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
| 1471 #ifdef ISTRIP | |
| 1472 tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
| 1473 #endif | |
| 1474 tty.main.c_lflag &= ~ECHO; /* Disable echo */ | |
| 1475 tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
| 1476 #ifdef IEXTEN | |
| 1477 tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ | |
| 1478 #endif | |
| 1479 tty.main.c_lflag |= ISIG; /* Enable signals */ | |
| 1480 if (TTY_FLAGS (con).flow_control) | |
| 1481 { | |
| 1482 tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
| 1483 #ifdef IXANY | |
| 1484 tty.main.c_iflag &= ~IXANY; | |
| 1485 #endif /* IXANY */ | |
| 1486 } | |
| 1487 else | |
| 1488 tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
| 1489 tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
| 1490 on output */ | |
| 513 | 1491 |
| 1492 #if 0 | |
| 1493 /* We used to disable tab expansion here, but this is the user's decision. */ | |
| 1494 #if defined (TABDLY) && defined (TAB3) | |
| 1495 if ((tty.main.c_oflag & TABDLY) == TAB3) | |
| 1496 tty.main.c_oflag &= ~TABDLY; /* Disable tab expansion (Posix). */ | |
| 1497 #elif defined (OXTABS) | |
| 1498 tty.main.c_oflag &= ~OXTABS; /* Disable tab expansion (BSD). */ | |
| 1499 #endif | |
| 1500 #endif /* 0 */ | |
| 1501 | |
| 428 | 1502 #ifdef CS8 |
| 1503 if (TTY_FLAGS (con).meta_key) | |
| 1504 { | |
| 1505 tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
| 1506 tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
| 1507 } | |
| 1508 #endif | |
| 1509 if (CONSOLE_TTY_DATA (con)->controlling_terminal) | |
| 1510 { | |
| 1204 | 1511 tty.main.c_cc[VINTR] = /* C-g (usually) gives SIGINT */ |
| 2828 | 1512 event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1513 /* Set up C-g for both SIGQUIT and SIGINT. |
| 1514 We don't know which we will get, but we handle both alike | |
| 1515 so which one it really gives us does not matter. */ | |
| 1204 | 1516 tty.main.c_cc[VQUIT] = tty.main.c_cc[VINTR]; |
| 428 | 1517 } |
| 1518 else | |
| 1519 { | |
| 1520 tty.main.c_cc[VINTR] = _POSIX_VDISABLE; | |
| 1521 tty.main.c_cc[VQUIT] = _POSIX_VDISABLE; | |
| 1522 } | |
| 1523 tty.main.c_cc[VMIN] = 1; /* Input should wait for at | |
| 1524 least 1 char */ | |
| 1525 tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
| 1526 #ifdef VSWTCH | |
| 1527 tty.main.c_cc[VSWTCH] = _POSIX_VDISABLE; /* Turn off shell layering use | |
| 1528 of C-z */ | |
| 1529 #endif /* VSWTCH */ | |
| 1530 /* There was some conditionalizing here on (mips or TCATTR), but | |
| 1531 I think that's wrong. There was one report of C-y (DSUSP) not being | |
| 1532 disabled on HP9000s700 systems, and this might fix it. */ | |
| 1533 #ifdef VSUSP | |
| 1534 tty.main.c_cc[VSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-z. */ | |
| 1535 #endif /* VSUSP */ | |
| 1536 #ifdef V_DSUSP | |
| 1537 tty.main.c_cc[V_DSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-y. */ | |
| 1538 #endif /* V_DSUSP */ | |
| 1539 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ | |
| 1540 tty.main.c_cc[VDSUSP] = _POSIX_VDISABLE; | |
| 1541 #endif /* VDSUSP */ | |
| 1542 #ifdef VLNEXT | |
| 1543 tty.main.c_cc[VLNEXT] = _POSIX_VDISABLE; | |
| 1544 #endif /* VLNEXT */ | |
| 1545 #ifdef VREPRINT | |
| 1546 tty.main.c_cc[VREPRINT] = _POSIX_VDISABLE; | |
| 1547 #endif /* VREPRINT */ | |
| 1548 #ifdef VWERASE | |
| 1549 tty.main.c_cc[VWERASE] = _POSIX_VDISABLE; | |
| 1550 #endif /* VWERASE */ | |
| 1551 #ifdef VDISCARD | |
| 1552 tty.main.c_cc[VDISCARD] = _POSIX_VDISABLE; | |
| 1553 #endif /* VDISCARD */ | |
| 1554 #ifdef VSTART | |
| 1555 tty.main.c_cc[VSTART] = _POSIX_VDISABLE; | |
| 1556 #endif /* VSTART */ | |
| 1557 #ifdef VSTRT | |
| 1558 tty.main.c_cc[VSTRT] = _POSIX_VDISABLE; /* called VSTRT on some systems */ | |
| 1559 #endif /* VSTART */ | |
| 1560 #ifdef VSTOP | |
| 1561 tty.main.c_cc[VSTOP] = _POSIX_VDISABLE; | |
| 1562 #endif /* VSTOP */ | |
| 1563 | |
| 1564 #ifdef AIX | |
| 1565 #ifndef IBMR2AIX | |
| 1566 /* AIX enhanced edit loses NULs, so disable it. */ | |
| 1567 tty.main.c_line = 0; | |
| 1568 tty.main.c_iflag &= ~ASCEDIT; | |
| 1569 #else | |
| 1570 tty.main.c_cc[VSTRT] = 255; | |
| 1571 tty.main.c_cc[VSTOP] = 255; | |
| 1572 tty.main.c_cc[VSUSP] = 255; | |
| 1573 tty.main.c_cc[VDSUSP] = 255; | |
| 1574 #endif /* IBMR2AIX */ | |
| 1575 /* Also, PTY overloads NUL and BREAK. | |
| 1576 don't ignore break, but don't signal either, so it looks like NUL. | |
| 1577 This really serves a purpose only if running in an XTERM window | |
| 1578 or via TELNET or the like, but does no harm elsewhere. */ | |
| 1579 tty.main.c_iflag &= ~IGNBRK; | |
| 1580 tty.main.c_iflag &= ~BRKINT; | |
| 1581 #endif /* AIX */ | |
| 1582 #else /* if not HAVE_TERMIO */ | |
| 1583 con->tty_erase_char = make_char (tty.main.sg_erase); | |
| 1584 tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); | |
| 1585 if (TTY_FLAGS (con).meta_key) | |
| 1586 tty.main.sg_flags |= ANYP; | |
| 1587 /* #### should we be using RAW mode here? */ | |
| 1588 tty.main.sg_flags |= /* interrupt_input ? RAW : */ CBREAK; | |
| 1589 #endif /* not HAVE_TERMIO */ | |
| 1590 | |
| 1591 /* If going to use CBREAK mode, we must request C-g to interrupt | |
| 1592 and turn off start and stop chars, etc. If not going to use | |
| 1593 CBREAK mode, do this anyway so as to turn off local flow | |
| 1594 control for user coming over network on 4.2; in this case, | |
| 1595 only t_stopc and t_startc really matter. */ | |
| 1596 #ifndef HAVE_TERMIO | |
| 1597 #ifdef HAVE_TCHARS | |
| 1598 /* Note: if not using CBREAK mode, it makes no difference how we | |
| 1599 set this */ | |
| 1600 tty.tchars = new_tchars; | |
| 2828 | 1601 tty.tchars.t_intrc = event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1); |
| 428 | 1602 if (TTY_FLAGS (con).flow_control) |
| 1603 { | |
| 1604 tty.tchars.t_startc = '\021'; | |
| 1605 tty.tchars.t_stopc = '\023'; | |
| 1606 } | |
| 1607 | |
| 1608 tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | | |
| 1609 CONSOLE_TTY_DATA (con)->old_tty.lmode; | |
| 1610 #endif /* HAVE_TCHARS */ | |
| 1611 #endif /* not HAVE_TERMIO */ | |
| 1612 | |
| 1613 #ifdef HAVE_LTCHARS | |
| 1614 tty.ltchars = new_ltchars; | |
| 1615 #endif /* HAVE_LTCHARS */ | |
| 1616 | |
| 430 | 1617 emacs_set_tty (input_fd, &tty, 0); |
| 428 | 1618 |
| 1619 /* This code added to insure that, if flow-control is not to be used, | |
| 1620 we have an unlocked terminal at the start. */ | |
| 1621 | |
| 1622 #ifdef TCXONC | |
| 1623 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TCXONC, 1); | |
| 1624 #endif | |
| 1625 #ifdef TIOCSTART | |
| 1626 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TIOCSTART, 0); | |
| 1627 #endif | |
| 1628 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1629 #if defined (HAVE_TERMIOS) |
| 428 | 1630 #ifdef TCOON |
| 1631 if (!TTY_FLAGS (con).flow_control) tcflow (input_fd, TCOON); | |
| 1632 #endif | |
| 1633 #endif | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1634 |
| 428 | 1635 set_tty_modes (con); |
| 1636 } | |
| 1637 | |
| 1638 #endif /* HAVE_TTY */ | |
| 1639 | |
| 1640 void | |
| 2340 | 1641 init_one_device ( |
| 1642 #if defined(HAVE_TTY) || (defined(SIGIO) && !defined(BROKEN_SIGIO)) | |
| 1643 struct device *d | |
| 1644 #else | |
| 1645 struct device *UNUSED (d) | |
| 1646 #endif | |
| 1647 ) | |
| 428 | 1648 { |
| 1649 #ifdef HAVE_TTY | |
| 1650 if (DEVICE_TTY_P (d)) | |
| 1651 tty_init_sys_modes_on_device (d); | |
| 1652 #endif | |
| 1653 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1654 if (!DEVICE_STREAM_P (d)) | |
| 1655 { | |
| 1656 init_sigio_on_device (d); | |
| 1657 request_sigio_on_device (d); | |
| 1658 } | |
| 1659 #endif | |
| 1660 } | |
| 1661 | |
| 1662 void | |
| 1663 init_one_console (struct console *con) | |
| 1664 { | |
| 1665 Lisp_Object devcons; | |
| 1666 | |
| 1667 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1668 { | |
| 1669 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1670 | |
| 1671 init_one_device (d); | |
| 1672 } | |
| 1673 } | |
| 1674 | |
| 1675 void | |
| 1676 reinit_initial_console (void) | |
| 1677 { | |
| 1678 munge_process_groups (); | |
| 1679 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1680 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1681 init_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1682 } | |
| 1683 | |
| 1684 | |
| 1685 /* ------------------------------------------------------ */ | |
| 1686 /* Other TTY functions */ | |
| 1687 /* ------------------------------------------------------ */ | |
| 1688 | |
| 1689 #ifdef HAVE_TTY | |
| 1690 | |
| 1691 #if 0 /* not currently used */ | |
| 1692 | |
| 1693 /* Return nonzero if safe to use tabs in output. | |
| 1694 At the time this is called, init_sys_modes has not been done yet. */ | |
| 1695 | |
| 1696 int | |
| 2340 | 1697 tabs_safe_p (struct device *USED_IF_TTY (d)) |
| 428 | 1698 { |
| 1699 #ifdef HAVE_TTY | |
| 1700 if (DEVICE_TTY_P (d)) | |
| 1701 { | |
| 1702 struct emacs_tty tty; | |
| 1703 | |
| 430 | 1704 emacs_get_tty (DEVICE_INFD (d), &tty); |
| 428 | 1705 return EMACS_TTY_TABS_OK (&tty); |
| 1706 } | |
| 1707 #endif | |
| 1708 return 1; | |
| 1709 } | |
| 1710 | |
| 1711 #endif /* 0 */ | |
| 1712 | |
| 1713 /* Get terminal size from system. | |
| 1714 Store number of lines into *heightp and width into *widthp. | |
| 1715 If zero or a negative number is stored, the value is not valid. */ | |
| 1716 | |
| 1717 void | |
| 1718 get_tty_device_size (struct device *d, int *widthp, int *heightp) | |
| 1719 { | |
| 1720 int input_fd = DEVICE_INFD (d); | |
| 1721 | |
| 1722 assert (DEVICE_TTY_P (d)); | |
| 1723 | |
| 1724 #ifdef TIOCGWINSZ | |
| 1725 { | |
| 1726 /* BSD-style. */ | |
| 1727 struct winsize size; | |
| 1728 | |
| 1729 if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
| 1730 *widthp = *heightp = 0; | |
| 1731 else | |
| 1732 { | |
| 1733 *widthp = size.ws_col; | |
| 1734 *heightp = size.ws_row; | |
| 1735 } | |
| 1736 } | |
| 1737 #elif defined TIOCGSIZE | |
| 1738 { | |
| 1739 /* SunOS - style. */ | |
| 1740 struct ttysize size; | |
| 1741 | |
| 1742 if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
| 1743 *widthp = *heightp = 0; | |
| 1744 else | |
| 1745 { | |
| 1746 *widthp = size.ts_cols; | |
| 1747 *heightp = size.ts_lines; | |
| 1748 } | |
| 1749 } | |
| 1750 #else /* system doesn't know size */ | |
| 1751 | |
| 1752 *widthp = 0; | |
| 1753 *heightp = 0; | |
| 1754 | |
| 1755 #endif /* not !TIOCGWINSZ */ | |
| 1756 } | |
| 1757 | |
| 1758 #endif /* HAVE_TTY */ | |
| 1759 | |
| 1760 | |
| 1761 /* ------------------------------------------------------ */ | |
| 1762 /* Is device 8 bit ? */ | |
| 1763 /* ------------------------------------------------------ */ | |
| 1764 | |
| 1765 #ifdef HAVE_TTY | |
| 1766 | |
| 1767 int | |
| 1768 eight_bit_tty (struct device *d) | |
| 1769 { | |
| 1770 struct emacs_tty s; | |
| 1771 int input_fd; | |
| 1772 int eight_bit = 0; | |
| 1773 | |
| 1774 assert (DEVICE_TTY_P (d)); | |
| 1775 input_fd = DEVICE_INFD (d); | |
| 1776 | |
| 430 | 1777 emacs_get_tty (input_fd, &s); |
| 428 | 1778 |
| 1779 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) | |
| 1780 eight_bit = (s.main.c_cflag & CSIZE) == CS8; | |
| 1781 #else | |
| 1782 eight_bit = 0; /* I don't know how to do it */ | |
| 1783 #endif | |
| 1784 return eight_bit; | |
| 1785 } | |
| 1786 | |
| 1787 #endif /* HAVE_TTY */ | |
| 1788 | |
| 1789 | |
| 1790 /* ------------------------------------------------------ */ | |
| 1791 /* Resetting a device */ | |
| 1792 /* ------------------------------------------------------ */ | |
| 1793 | |
| 1794 #ifdef HAVE_TTY | |
| 1795 | |
| 1796 /* Prepare the terminal for exiting Emacs; move the cursor to the | |
| 1797 bottom of the frame, turn off interrupt-driven I/O, etc. */ | |
| 1798 static void | |
| 1799 tty_reset_sys_modes_on_device (struct device *d) | |
| 1800 { | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1801 #if defined (BSD) |
| 2286 | 1802 int output_fd; |
| 1803 #endif | |
| 1804 int input_fd; | |
| 428 | 1805 struct console *con = XCONSOLE (DEVICE_CONSOLE (d)); |
| 1806 | |
| 1807 input_fd = CONSOLE_TTY_DATA (con)->infd; | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
1808 #if defined (BSD) |
| 428 | 1809 output_fd = CONSOLE_TTY_DATA (con)->outfd; |
| 2286 | 1810 #endif |
| 428 | 1811 |
| 1812 tty_redisplay_shutdown (con); | |
| 1813 /* reset_tty_modes() flushes the connection at its end. */ | |
| 1814 reset_tty_modes (con); | |
| 1815 | |
| 1816 #if defined (BSD) | |
| 1817 /* Avoid possible loss of output when changing terminal modes. */ | |
| 1818 fsync (output_fd); | |
| 1819 #endif | |
| 1820 | |
| 430 | 1821 while (emacs_set_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty, 0) |
| 428 | 1822 < 0 && errno == EINTR) |
| 1823 ; | |
| 1824 } | |
| 1825 | |
| 1826 #endif /* HAVE_TTY */ | |
| 1827 | |
| 1828 void | |
| 1829 reset_one_device (struct device *d) | |
| 1830 { | |
| 1831 #ifdef HAVE_TTY | |
| 1832 if (DEVICE_TTY_P (d)) | |
| 1833 tty_reset_sys_modes_on_device (d); | |
| 1834 else | |
| 1835 #endif | |
| 1836 if (DEVICE_STREAM_P (d)) | |
| 1837 fflush (CONSOLE_STREAM_DATA (XCONSOLE (DEVICE_CONSOLE (d)))->out); | |
| 1838 #if defined(SIGIO) && !defined(BROKEN_SIGIO) | |
| 1839 if (!DEVICE_STREAM_P (d)) | |
| 1840 { | |
| 1841 unrequest_sigio_on_device (d); | |
| 1842 reset_sigio_on_device (d); | |
| 1843 } | |
| 1844 #endif | |
| 1845 } | |
| 1846 | |
| 1847 void | |
| 1848 reset_one_console (struct console *con) | |
| 1849 { | |
| 1850 /* Note: this can be called during GC. */ | |
| 1851 Lisp_Object devcons; | |
| 1852 | |
| 1853 CONSOLE_DEVICE_LOOP (devcons, con) | |
| 1854 { | |
| 1855 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1856 | |
| 1857 reset_one_device (d); | |
| 1858 } | |
| 1859 } | |
| 1860 | |
| 1861 void | |
| 1862 reset_all_consoles (void) | |
| 1863 { | |
| 1864 /* Note: this can be called during GC. */ | |
| 1865 Lisp_Object concons; | |
| 1866 | |
| 1867 CONSOLE_LOOP (concons) | |
| 1868 { | |
| 1869 struct console *con = XCONSOLE (XCAR (concons)); | |
| 1870 | |
| 1871 reset_one_console (con); | |
| 1872 } | |
| 1873 | |
| 1874 unmunge_process_groups (); | |
| 1875 } | |
| 1876 | |
| 1877 void | |
| 1878 reset_initial_console (void) | |
| 1879 { | |
| 1880 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1881 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1882 reset_one_console (XCONSOLE (Vcontrolling_terminal)); | |
| 1883 unmunge_process_groups (); | |
| 1884 } | |
| 1885 | |
| 1886 | |
| 1887 /************************************************************************/ | |
| 1888 /* limits of text/data segments */ | |
| 1889 /************************************************************************/ | |
| 1890 | |
| 801 | 1891 /* Need start_of_data() as much as possible now, for total_data_usage(); |
| 1892 but with PDUMP and WIN32_NATIVE, can't currently do it. */ | |
| 1330 | 1893 #if ! (defined (PDUMP) && defined (WIN32_NATIVE) && defined (SYSTEM_MALLOC)) |
| 428 | 1894 #define NEED_STARTS |
| 1895 #endif | |
| 1896 | |
| 1897 #ifdef NEED_STARTS | |
| 1898 /* Some systems that cannot dump also cannot implement these. */ | |
| 1899 | |
| 1900 /* | |
| 1901 * Return the address of the start of the text segment prior to | |
| 1902 * doing an unexec. After unexec the return value is undefined. | |
| 1903 * See crt0.c for further explanation and _start. | |
| 1904 * | |
| 1905 */ | |
| 1906 | |
| 801 | 1907 #if !defined (HAVE_TEXT_START) && !defined (PDUMP) |
| 440 | 1908 |
| 442 | 1909 EXTERN_C int _start (void); |
| 428 | 1910 |
| 1911 char * | |
| 1912 start_of_text (void) | |
| 1913 { | |
| 1914 #ifdef TEXT_START | |
| 442 | 1915 return (char *) TEXT_START; |
| 428 | 1916 #else |
| 442 | 1917 return (char *) _start; |
| 428 | 1918 #endif /* TEXT_START */ |
| 1919 } | |
| 440 | 1920 #endif /* !defined(HAVE_TEXT_START) && !defined(PDUMP) */ |
| 428 | 1921 |
| 1922 /* | |
| 1923 * Return the address of the start of the data segment prior to | |
| 1924 * doing an unexec. After unexec the return value is undefined. | |
| 442 | 1925 * See ecrt0.c for further information and definition of data_start. |
| 428 | 1926 * |
| 1927 * Apparently, on BSD systems this is etext at startup. On | |
| 1928 * USG systems (swapping) this is highly mmu dependent and | |
| 1929 * is also dependent on whether or not the program is running | |
| 1930 * with shared text. Generally there is a (possibly large) | |
| 1931 * gap between end of text and start of data with shared text. | |
| 1932 * | |
| 1933 * On Uniplus+ systems with shared text, data starts at a | |
| 1934 * fixed address. Each port (from a given oem) is generally | |
| 1935 * different, and the specific value of the start of data can | |
| 1936 * be obtained via the UniPlus+ specific "uvar" system call, | |
| 1937 * however the method outlined in crt0.c seems to be more portable. | |
| 1938 * | |
| 1939 * Probably what will have to happen when a USG unexec is available, | |
| 1940 * at least on UniPlus, is temacs will have to be made unshared so | |
| 1941 * that text and data are contiguous. Then once loadup is complete, | |
| 1942 * unexec will produce a shared executable where the data can be | |
| 1943 * at the normal shared text boundary and the startofdata variable | |
| 1944 * will be patched by unexec to the correct value. | |
| 1945 * | |
| 1946 */ | |
| 1947 | |
| 801 | 1948 #if defined (ORDINARY_LINK) && !defined (MINGW) |
| 428 | 1949 extern char **environ; |
| 1950 #endif | |
| 1951 | |
| 1952 void * | |
| 1953 start_of_data (void) | |
| 1954 { | |
| 1955 #ifdef DATA_START | |
| 1956 return ((char *) DATA_START); | |
| 1957 #else | |
| 452 | 1958 #if defined (ORDINARY_LINK) || defined(PDUMP) |
| 428 | 1959 /* |
| 1960 * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
| 1961 * data_start isn't defined. We take the address of environ, which | |
| 1962 * is known to live at or near the start of the system crt0.c, and | |
| 1963 * we don't sweat the handful of bytes that might lose. | |
| 1964 */ | |
| 442 | 1965 #if defined (HEAP_IN_DATA) && !defined(PDUMP) |
| 428 | 1966 extern char* static_heap_base; |
| 1967 if (!initialized) | |
| 1968 return static_heap_base; | |
| 1969 #endif | |
| 801 | 1970 return ((char *) &environ); |
| 428 | 1971 #else |
| 1972 extern int data_start; | |
| 1973 return ((char *) &data_start); | |
| 1974 #endif /* ORDINARY_LINK */ | |
| 1975 #endif /* DATA_START */ | |
| 1976 } | |
| 1330 | 1977 #endif /* NEED_STARTS aka !(PDUMP && WIN32_NATIVE && SYSTEM_MALLOC) */ |
| 428 | 1978 |
| 801 | 1979 extern void *minimum_address_seen; /* from xmalloc() */ |
| 1980 extern void *maximum_address_seen; /* from xmalloc() */ | |
| 1981 | |
| 1982 Bytecount | |
| 1983 total_data_usage (void) | |
| 1984 { | |
| 1985 #ifdef NEED_STARTS | |
| 1986 void *data_start = start_of_data (); | |
| 1987 #else | |
| 1988 void *data_start = minimum_address_seen; | |
| 1989 #endif | |
| 854 | 1990 |
| 1315 | 1991 #ifndef WIN32_ANY |
| 814 | 1992 void *data_end = sbrk (0); |
| 801 | 1993 #else |
| 1994 void *data_end = maximum_address_seen; | |
| 1995 #endif | |
| 1996 | |
| 1997 /* Sanity checking -- the min determined by malloc() should always be | |
| 1998 greater than data start determined by other means. We could do the | |
| 1999 same check on the max, except that things like rel-alloc might | |
| 2000 invalidate it. */ | |
| 2001 if (minimum_address_seen && | |
| 2002 (char *) minimum_address_seen < (char *) data_start) | |
| 2003 data_start = minimum_address_seen; | |
| 2004 | |
| 2005 if (data_end < data_start) /* Huh?????????? */ | |
| 2006 data_end = maximum_address_seen; | |
| 2007 | |
| 2008 /* #### Doesn't seem to give good results on Windows; values are much | |
| 2009 higher than actual memory usage. How to fix??? */ | |
| 2010 return (char *) data_end - (char *) data_start; | |
| 2011 } | |
| 2012 | |
| 428 | 2013 |
| 2014 /************************************************************************/ | |
| 2015 /* get the system name */ | |
| 2016 /************************************************************************/ | |
| 2017 | |
| 2018 /* init_system_name sets up the string for the Lisp function | |
| 2019 system-name to return. */ | |
| 2020 | |
| 2021 extern Lisp_Object Vsystem_name; | |
| 2022 | |
| 2023 void | |
| 2024 init_system_name (void) | |
| 2025 { | |
| 442 | 2026 #if defined (WIN32_NATIVE) |
| 771 | 2027 Extbyte hostname[MAX_XETCHAR_SIZE * (MAX_COMPUTERNAME_LENGTH + 1)]; |
| 2028 DWORD size = sizeof (hostname) / XETCHAR_SIZE; | |
| 2029 qxeGetComputerName (hostname, &size); | |
| 2030 Vsystem_name = build_tstr_string (hostname); | |
| 428 | 2031 #elif !defined (HAVE_GETHOSTNAME) |
| 2032 struct utsname uts; | |
| 2033 uname (&uts); | |
|
4953
304aebb79cd3
function renamings to track names of char typedefs
Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
2034 Vsystem_name = build_extstring (uts.nodename, Qunix_host_name_encoding); |
| 428 | 2035 #else /* HAVE_GETHOSTNAME */ |
| 647 | 2036 int hostname_size = 256; |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2037 Extbyte *hostname = alloca_extbytes (hostname_size); |
| 428 | 2038 |
| 2039 /* Try to get the host name; if the buffer is too short, try | |
| 2040 again. Apparently, the only indication gethostname gives of | |
| 2041 whether the buffer was large enough is the presence or absence | |
| 2042 of a '\0' in the string. Eech. */ | |
| 2043 for (;;) | |
| 2044 { | |
| 2045 gethostname (hostname, hostname_size - 1); | |
| 2046 hostname[hostname_size - 1] = '\0'; | |
| 2047 | |
| 2048 /* Was the buffer large enough for the '\0'? */ | |
| 647 | 2049 if ((int) strlen (hostname) < (hostname_size - 1)) |
| 428 | 2050 break; |
| 2051 | |
| 2052 hostname_size <<= 1; | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2053 hostname = alloca_extbytes (hostname_size); |
| 428 | 2054 } |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2055 # if defined (HAVE_SOCKETS) |
| 428 | 2056 /* Turn the hostname into the official, fully-qualified hostname. |
| 2057 Don't do this if we're going to dump; this can confuse system | |
| 2058 libraries on some machines and make the dumped emacs core dump. */ | |
| 2059 if (initialized) | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2060 /* !!#### Could fail if we have a 7-bit external encoding */ |
| 428 | 2061 if (!strchr (hostname, '.')) |
| 2062 { | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2063 # if !(defined (HAVE_GETADDRINFO) && defined (HAVE_GETNAMEINFO)) |
| 428 | 2064 struct hostent *hp = NULL; |
| 2065 int count; | |
| 440 | 2066 # ifdef TRY_AGAIN |
| 428 | 2067 for (count = 0; count < 10; count++) |
| 2068 { | |
| 2069 h_errno = 0; | |
| 440 | 2070 # endif |
| 428 | 2071 /* Some systems can't handle SIGALARM/SIGIO in gethostbyname(). */ |
| 2072 stop_interrupts (); | |
| 2073 hp = gethostbyname (hostname); | |
| 2074 start_interrupts (); | |
| 440 | 2075 # ifdef TRY_AGAIN |
| 428 | 2076 if (! (hp == 0 && h_errno == TRY_AGAIN)) |
| 2077 break; | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5495
diff
changeset
|
2078 Fsleep_for (make_fixnum (1)); |
| 428 | 2079 } |
| 440 | 2080 # endif |
| 428 | 2081 if (hp) |
| 2082 { | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2083 const Extbyte *fqdn = (const Extbyte *) hp->h_name; |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2084 |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2085 /* !!#### Could fail if we have a 7-bit external encoding */ |
| 428 | 2086 if (!strchr (fqdn, '.')) |
| 2087 { | |
| 2088 /* We still don't have a fully qualified domain name. | |
| 2089 Try to find one in the list of alternate names */ | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2090 Extbyte **alias = hp->h_aliases; |
| 428 | 2091 while (*alias && !strchr (*alias, '.')) |
| 2092 alias++; | |
| 2093 if (*alias) | |
| 2094 fqdn = *alias; | |
| 2095 } | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2096 hostname = alloca_extbytes (strlen (fqdn) + 1); |
| 428 | 2097 strcpy (hostname, fqdn); |
| 2098 } | |
| 440 | 2099 # else /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ |
| 2100 struct addrinfo hints, *res; | |
| 2101 | |
| 2102 xzero (hints); | |
| 2103 hints.ai_flags = AI_CANONNAME; | |
| 724 | 2104 #ifdef IPV6_CANONICALIZE |
| 440 | 2105 hints.ai_family = AF_UNSPEC; |
| 724 | 2106 #else |
| 2107 hints.ai_family = PF_INET; | |
| 2108 #endif | |
| 440 | 2109 hints.ai_socktype = SOCK_STREAM; |
| 2110 hints.ai_protocol = 0; | |
| 2111 if (!getaddrinfo (hostname, NULL, &hints, &res)) | |
| 2112 { | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
2113 hostname = alloca_extbytes (strlen (res->ai_canonname) + 1); |
| 440 | 2114 strcpy (hostname, res->ai_canonname); |
| 2115 | |
| 2116 freeaddrinfo (res); | |
| 2117 } | |
| 2118 # endif /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */ | |
| 428 | 2119 } |
| 2120 # endif /* HAVE_SOCKETS */ | |
|
4953
304aebb79cd3
function renamings to track names of char typedefs
Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
2121 Vsystem_name = build_extstring (hostname, Qunix_host_name_encoding); |
| 428 | 2122 #endif /* HAVE_GETHOSTNAME */ |
| 2123 { | |
| 867 | 2124 Ibyte *p; |
| 428 | 2125 Bytecount i; |
| 2126 | |
| 2127 for (i = 0, p = XSTRING_DATA (Vsystem_name); | |
| 2128 i < XSTRING_LENGTH (Vsystem_name); | |
| 2129 i++, p++) | |
| 2130 { | |
| 2131 if (*p == ' ' || *p == '\t') | |
| 2132 *p = '-'; | |
| 2133 } | |
| 2134 } | |
| 2135 } | |
| 2136 | |
| 2137 | |
| 2138 /************************************************************************/ | |
| 2139 /* Emulation of select() */ | |
| 2140 /************************************************************************/ | |
| 2141 | |
| 2142 #ifndef HAVE_SELECT | |
| 2143 | |
| 2144 ERROR: XEmacs requires a working select(). | |
| 2145 | |
| 2146 #endif /* not HAVE_SELECT */ | |
| 2147 | |
| 2148 | |
| 2149 /************************************************************************/ | |
| 2150 /* Emulation of signal stuff */ | |
| 2151 /************************************************************************/ | |
| 2152 | |
| 2153 /* BSD 4.1 crap deleted. 4.2 was released in 1983, for God's sake! I | |
| 2154 can't imagine that anyone is actually running that OS any more. | |
| 2155 You can't use X under it (I think) because there's no select(). | |
| 2156 Anyway, the signal stuff has all been changed. If someone wants to | |
| 2157 get this stuff working again, look in the FSF Emacs sources. */ | |
| 2158 | |
| 2159 /* POSIX signals support - DJB */ | |
| 2160 | |
| 2161 #ifdef HAVE_SIGPROCMASK | |
| 2162 | |
| 2163 signal_handler_t | |
| 613 | 2164 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2165 { |
|
5494
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2166 static struct sigaction new_action, old_action; |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2167 |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2168 /* XEmacs works better if system calls are not restarted. |
| 428 | 2169 This allows C-g to interrupt reads and writes, on most systems. |
| 2170 | |
| 2171 #### Another possibility is to just longjmp() out of the signal | |
| 2172 handler. According to W.R. Stevens, this should be OK on all | |
| 2173 systems. However, I don't want to deal with the potential | |
| 2174 evil ramifications of this at this point. */ | |
| 2175 sigemptyset (&new_action.sa_mask); | |
| 2176 new_action.sa_handler = action; | |
| 2177 #if defined (SA_INTERRUPT) /* don't restart system calls, under SunOS */ | |
| 2178 new_action.sa_flags = SA_INTERRUPT; | |
| 2179 #else | |
| 2180 new_action.sa_flags = 0; | |
| 2181 #endif | |
| 2182 sigaction (signal_number, &new_action, &old_action); | |
| 2183 return (signal_handler_t) (old_action.sa_handler); | |
| 2184 } | |
| 2185 | |
| 2186 #elif defined (HAVE_SIGBLOCK) | |
| 2187 | |
| 2188 /* We use sigvec() rather than signal() if we have it, because | |
| 2189 it lets us specify interruptible system calls. */ | |
| 2190 signal_handler_t | |
| 613 | 2191 qxe_reliable_signal (int signal_number, signal_handler_t action) |
| 428 | 2192 { |
| 2193 struct sigvec vec, ovec; | |
| 2194 | |
| 2195 vec.sv_handler = action; | |
| 2196 vec.sv_mask = 0; | |
| 2197 #ifdef SV_INTERRUPT /* don't restart system calls */ | |
| 2198 vec.sv_flags = SV_INTERRUPT; | |
| 2199 #else | |
| 2200 vec.sv_flags = 0; | |
| 2201 #endif | |
| 2202 | |
| 2203 sigvec (signal_number, &vec, &ovec); | |
| 2204 | |
| 2205 return (ovec.sv_handler); | |
| 2206 } | |
| 2207 | |
| 2208 #endif /* HAVE_SIGBLOCK (HAVE_SIGPROCMASK) */ | |
| 2209 | |
| 2210 | |
| 2211 /************************************************************************/ | |
| 2212 /* Emulation of strerror() and errno support */ | |
| 2213 /************************************************************************/ | |
| 2214 | |
| 2215 #ifndef HAVE_STRERROR | |
| 2216 | |
|
5494
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2217 #if !defined(__alpha) && !defined(MACH) && !defined(LINUX) && !defined(IRIX6_5) && !defined(__NetBSD__) |
| 428 | 2218 /* Linux added here by Raymond L. Toy <toy@alydar.crd.ge.com> for XEmacs. */ |
| 2219 /* Irix added here by gparker@sni-usa.com for XEmacs. */ | |
| 2220 /* NetBSD added here by James R Grinter <jrg@doc.ic.ac.uk> for XEmacs */ | |
| 442 | 2221 extern const char *sys_errlist[]; |
| 428 | 2222 extern int sys_nerr; |
| 2223 #endif | |
| 2224 | |
| 2225 #ifdef __NetBSD__ | |
| 2226 extern char *sys_errlist[]; | |
| 2227 extern int sys_nerr; | |
| 2228 #endif | |
| 2229 | |
| 2230 | |
| 442 | 2231 const char * |
| 428 | 2232 strerror (int errnum) |
| 2233 { | |
| 2234 if (errnum >= 0 && errnum < sys_nerr) | |
| 2235 return sys_errlist[errnum]; | |
| 442 | 2236 return ((const char *) GETTEXT ("Unknown error")); |
| 428 | 2237 } |
| 2238 | |
| 2239 #endif /* ! HAVE_STRERROR */ | |
| 2240 | |
| 2241 | |
| 2242 /************************************************************************/ | |
| 2243 /* Encapsulations of system calls */ | |
| 2244 /************************************************************************/ | |
| 2245 | |
| 2246 /***************** low-level calls ****************/ | |
| 2247 | |
| 2248 /* | |
| 2249 * On USG systems the system calls are INTERRUPTIBLE by signals | |
| 2250 * that the user program has elected to catch. Thus the system call | |
| 2251 * must be retried in these cases. To handle this without massive | |
| 2252 * changes in the source code, we remap the standard system call names | |
| 2253 * to names for our own functions in sysdep.c that do the system call | |
| 2254 * with retries. Actually, for portability reasons, it is good | |
| 2255 * programming practice, as this example shows, to limit all actual | |
| 2256 * system calls to a single occurrence in the source. Sure, this | |
| 2257 * adds an extra level of function call overhead but it is almost | |
| 2258 * always negligible. Fred Fish, Unisoft Systems Inc. | |
| 2259 */ | |
| 2260 | |
| 2261 /* Ben sez: read Dick Gabriel's essay about the Worse Is Better | |
| 2262 approach to programming and its connection to the silly | |
| 2263 interruptible-system-call business. To find it, look on | |
| 2340 | 2264 Jamie's home page (http://www.jwz.org/doc/worse-is-better.html). */ |
| 428 | 2265 |
| 771 | 2266 #ifdef WIN32_NATIVE |
| 2267 | |
| 2268 static int | |
| 2269 underlying_open_1 (const Extbyte *path, int oflag, int mode) | |
| 2270 { | |
| 2271 if (XEUNICODE_P) | |
| 2272 return _wopen ((const wchar_t *) path, oflag, mode); | |
| 2273 else | |
| 2274 return _open (path, oflag, mode); | |
| 2275 } | |
| 2276 | |
| 2277 #endif /* WIN32_NATIVE */ | |
| 2278 | |
| 2367 | 2279 /* Just call open() with normal open() semantics, with some fixups for |
| 2280 problems under Windows. */ | |
| 771 | 2281 |
| 2282 static int | |
| 2283 underlying_open (const Extbyte *path, int oflag, int mode) | |
| 2284 { | |
| 2285 #ifdef WIN32_NATIVE | |
| 2286 { | |
| 2287 /* Try to open file without _O_CREAT, to be able to write to hidden | |
| 2288 and system files. Force all file handles to be | |
| 2289 non-inheritable. */ | |
| 2290 int res = underlying_open_1 (path, (oflag & ~_O_CREAT) | _O_NOINHERIT, | |
| 2291 mode); | |
| 2292 if (res >= 0) | |
| 2293 return res; | |
| 2294 return underlying_open_1 (path, oflag | _O_NOINHERIT, mode); | |
| 2295 } | |
| 2296 #else | |
| 2297 return open (path, oflag, mode); | |
| 2298 #endif /* WIN32_NATIVE */ | |
| 2299 } | |
| 2300 | |
| 2367 | 2301 static int |
| 2302 retry_open_1 (const Extbyte *path, int oflag, int mode) | |
| 428 | 2303 { |
|
5494
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2304 int rtnval; |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2305 while ((rtnval = underlying_open (path, oflag, mode)) == -1 |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2306 && (errno == EINTR)) |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2307 DO_NOTHING; |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2308 return rtnval; |
| 428 | 2309 } |
| 771 | 2310 |
| 2367 | 2311 /* A version of open() that retries when interrupted. Operates on |
| 2312 externally-encoded filenames. */ | |
| 2313 | |
| 2314 int XCDECL | |
| 2315 retry_open (const Extbyte *path, int oflag, ...) | |
| 2316 { | |
| 2317 int mode; | |
| 2318 va_list ap; | |
| 2319 | |
| 2320 va_start (ap, oflag); | |
| 2321 mode = va_arg (ap, int); | |
| 2322 va_end (ap); | |
| 2323 | |
| 2324 return retry_open_1 (path, oflag, mode); | |
| 2325 } | |
| 2326 | |
| 2327 #if defined (WIN32_NATIVE) && defined (WEXTTEXT_IS_WIDE) | |
| 2328 | |
| 2329 /* Like retry_open() but operate on Wexttext filenames. */ | |
| 2330 | |
| 2331 int XCDECL | |
| 2332 wext_retry_open (const Wexttext *path, int oflag, ...) | |
| 2333 { | |
| 2334 int mode; | |
| 2335 va_list ap; | |
| 2336 | |
| 2337 va_start (ap, oflag); | |
| 2338 mode = va_arg (ap, int); | |
| 2339 va_end (ap); | |
| 2340 | |
| 2341 if (!XEUNICODE_P) | |
| 2342 return retry_open_1 (WEXTTEXT_TO_MULTIBYTE (path), oflag, mode); | |
| 2343 else | |
| 2344 return retry_open_1 ((Extbyte *) path, oflag, mode); | |
| 2345 } | |
| 2346 | |
| 2347 #endif | |
| 2348 | |
| 771 | 2349 /* The basic external entry point to open(). Handles conversion to |
| 2350 external encoding, interruptions, etc. */ | |
| 2351 | |
| 872 | 2352 int XCDECL |
| 867 | 2353 qxe_open (const Ibyte *path, int oflag, ...) |
| 771 | 2354 { |
| 2355 Extbyte *pathout; | |
| 2356 int mode; | |
| 2357 va_list ap; | |
| 2358 | |
| 2359 va_start (ap, oflag); | |
| 2360 mode = va_arg (ap, int); | |
| 2361 va_end (ap); | |
| 2362 | |
| 2363 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2364 return retry_open (pathout, oflag, mode); | |
| 2365 } | |
| 2366 | |
| 2367 /* Like qxe_open, only when open() is interrupted by EINTR, check for | |
| 428 | 2368 QUIT. This allows the callers of this function to be interrupted |
| 2369 with C-g when, say, reading from named pipes. However, this should | |
| 1123 | 2370 be used with caution, as it can run random Lisp code (although it |
| 2371 cannot GC). | |
| 428 | 2372 |
| 2373 This function will not function as expected on systems where open() | |
| 2374 is not interrupted by C-g. However, the worst that can happen is | |
| 2375 the fallback to simple open(). */ | |
| 2376 int | |
| 867 | 2377 qxe_interruptible_open (const Ibyte *path, int oflag, int mode) |
| 428 | 2378 { |
| 2379 /* This function can GC */ | |
| 771 | 2380 Extbyte *pathout; |
| 2381 | |
| 2382 PATHNAME_CONVERT_OUT (path, pathout); | |
| 428 | 2383 |
| 442 | 2384 #ifdef WIN32_NATIVE |
| 440 | 2385 /* Make all handles non-inheritable */ |
| 2386 oflag |= _O_NOINHERIT; | |
| 2387 #endif | |
| 2388 | |
| 428 | 2389 for (;;) |
| 2390 { | |
| 771 | 2391 int rtnval = underlying_open (pathout, oflag, mode); |
| 428 | 2392 if (!(rtnval == -1 && errno == EINTR)) |
| 2393 return rtnval; | |
| 2394 /* open() was interrupted. Was QUIT responsible? */ | |
| 2395 QUIT; | |
| 2396 } | |
| 2397 } | |
| 2398 | |
| 2399 int | |
| 771 | 2400 retry_close (int filedes) |
| 428 | 2401 { |
| 2402 int did_retry = 0; | |
| 2403 REGISTER int rtnval; | |
| 2404 | |
| 2405 while ((rtnval = close (filedes)) == -1 | |
| 2406 && (errno == EINTR)) | |
| 2407 did_retry = 1; | |
| 2408 | |
| 2409 /* If close is interrupted SunOS 4.1 may or may not have closed the | |
| 2410 file descriptor. If it did the second close will fail with | |
| 2411 errno = EBADF. That means we have succeeded. */ | |
| 2412 if (rtnval == -1 && did_retry && errno == EBADF) | |
| 2413 return 0; | |
| 2414 | |
| 2415 return rtnval; | |
| 2416 } | |
| 771 | 2417 |
| 2418 static ssize_t | |
| 2419 retry_read_1 (int fildes, void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2420 { |
| 2421 ssize_t rtnval; | |
| 2422 | |
| 2423 while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
| 2424 && (errno == EINTR)) | |
| 2425 { | |
| 2426 if (allow_quit) | |
| 853 | 2427 QUIT; |
| 428 | 2428 } |
| 2429 return rtnval; | |
| 2430 } | |
| 2431 | |
| 2432 ssize_t | |
| 771 | 2433 retry_read (int fildes, void *buf, size_t nbyte) |
| 428 | 2434 { |
| 771 | 2435 return retry_read_1 (fildes, buf, nbyte, 0); |
| 428 | 2436 } |
| 771 | 2437 |
| 2438 static ssize_t | |
| 2439 retry_write_1 (int fildes, const void *buf, size_t nbyte, int allow_quit) | |
| 428 | 2440 { |
| 2441 ssize_t bytes_written = 0; | |
| 442 | 2442 const char *b = (const char *) buf; |
| 428 | 2443 |
| 2444 while (nbyte > 0) | |
| 2445 { | |
| 2446 ssize_t rtnval = write (fildes, b, nbyte); | |
| 2447 | |
| 2448 if (allow_quit) | |
| 853 | 2449 QUIT; |
| 428 | 2450 |
| 2451 if (rtnval == -1) | |
| 2452 { | |
| 2453 if (errno == EINTR) | |
| 2454 continue; | |
| 2455 else | |
| 2456 return bytes_written ? bytes_written : -1; | |
| 2457 } | |
| 2458 b += rtnval; | |
| 2459 nbyte -= rtnval; | |
| 2460 bytes_written += rtnval; | |
| 2461 } | |
| 2462 return bytes_written; | |
| 2463 } | |
| 2464 | |
| 2465 ssize_t | |
| 771 | 2466 retry_write (int fildes, const void *buf, size_t nbyte) |
| 428 | 2467 { |
| 771 | 2468 return retry_write_1 (fildes, buf, nbyte, 0); |
| 428 | 2469 } |
| 771 | 2470 |
| 2471 /* Versions of read() and write() that allow quitting out of the actual | |
| 2472 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the | |
| 2473 signal handler) because that's way too losing. | |
| 2474 | |
| 2475 (#### Actually, longjmp()ing out of the signal handler may not be | |
| 2476 as losing as I thought. See qxe_reliable_signal() in sysdep.c.) */ | |
| 2477 | |
| 2478 Bytecount | |
| 2479 read_allowing_quit (int fildes, void *buf, Bytecount size) | |
| 2480 { | |
| 2481 QUIT; | |
| 2482 return retry_read_1 (fildes, buf, size, 1); | |
| 2483 } | |
| 2484 | |
| 2485 Bytecount | |
| 2486 write_allowing_quit (int fildes, const void *buf, Bytecount size) | |
| 2487 { | |
| 2488 QUIT; | |
| 2489 return retry_write_1 (fildes, buf, size, 1); | |
| 2490 } | |
| 428 | 2491 |
| 2492 | |
| 2493 /**************** stdio calls ****************/ | |
| 2494 | |
| 2495 /* There is at least some evidence that the stdio calls are interruptible | |
| 2496 just like the normal system calls, at least on some systems. In any | |
| 2497 case, it doesn't hurt to encapsulate them. */ | |
| 2498 | |
| 2499 /* #### Should also encapsulate fflush(). | |
| 2500 #### Should conceivably encapsulate getchar() etc. What a pain! */ | |
| 2501 | |
| 2502 FILE * | |
| 2367 | 2503 retry_fopen (const Extbyte *path, const Ascbyte *mode) |
| 428 | 2504 { |
| 771 | 2505 #ifdef WIN32_NATIVE |
| 2506 int fd; | |
| 2507 int oflag; | |
| 2367 | 2508 const Ascbyte *mode_save = mode; |
| 771 | 2509 |
| 2510 /* Force all file handles to be non-inheritable. This is necessary to | |
| 2511 ensure child processes don't unwittingly inherit handles that might | |
| 2512 prevent future file access. */ | |
| 2513 | |
| 2514 if (mode[0] == 'r') | |
| 2515 oflag = O_RDONLY; | |
| 2516 else if (mode[0] == 'w' || mode[0] == 'a') | |
| 2517 oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
| 2518 else | |
| 2519 return NULL; | |
| 2520 | |
| 2521 /* Only do simplistic option parsing. */ | |
| 2522 while (*++mode) | |
| 2523 if (mode[0] == '+') | |
| 2524 { | |
| 2525 oflag &= ~(O_RDONLY | O_WRONLY); | |
| 2526 oflag |= O_RDWR; | |
| 2527 } | |
| 2528 else if (mode[0] == 'b') | |
| 2529 { | |
| 2530 oflag &= ~O_TEXT; | |
| 2531 oflag |= O_BINARY; | |
| 2532 } | |
| 2533 else if (mode[0] == 't') | |
| 2534 { | |
| 2535 oflag &= ~O_BINARY; | |
| 2536 oflag |= O_TEXT; | |
| 2537 } | |
| 2538 else break; | |
| 2539 | |
| 2540 fd = underlying_open (path, oflag, 0644); | |
| 2541 if (fd < 0) | |
| 2542 return NULL; | |
| 2543 | |
| 2544 return _fdopen (fd, mode_save); | |
| 428 | 2545 #else |
|
5494
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2546 FILE *rtnval; |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2547 while (!(rtnval = fopen (path, mode)) && (errno == EINTR)) |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2548 DO_NOTHING; |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2549 return rtnval; |
|
861f2601a38b
Sync s/ files with GNU 23.1.92, delete obsolete stuff, simplify other stuff
Ben Wing <ben@xemacs.org>
parents:
4982
diff
changeset
|
2550 #endif /* (not) WIN32_NATIVE */ |
| 428 | 2551 } |
| 771 | 2552 |
| 2553 FILE * | |
| 2367 | 2554 qxe_fopen (const Ibyte *path, const Ascbyte *mode) |
| 771 | 2555 { |
| 2556 Extbyte *pathout; | |
| 2557 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2558 return retry_fopen (pathout, mode); | |
| 2559 } | |
| 2560 | |
| 428 | 2561 int |
| 771 | 2562 retry_fclose (FILE *stream) |
| 428 | 2563 { |
| 2564 int rtnval; | |
| 2565 | |
| 2566 while ((rtnval = fclose (stream)) == EOF | |
| 2567 && (errno == EINTR)) | |
| 2568 ; | |
| 2569 return rtnval; | |
| 2570 } | |
| 771 | 2571 |
| 428 | 2572 size_t |
| 771 | 2573 retry_fread (void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2574 { |
| 2575 size_t rtnval; | |
| 2576 size_t items_read = 0; | |
| 2577 char *b = (char *) ptr; | |
| 2578 | |
| 2579 while (nitem > 0) | |
| 2580 { | |
| 2581 rtnval = fread (b, size, nitem, stream); | |
| 2582 if (rtnval == 0) | |
| 2583 { | |
| 2584 if (ferror (stream) && errno == EINTR) | |
| 2585 continue; | |
| 2586 else | |
| 2587 return items_read; | |
| 2588 } | |
| 2589 b += size*rtnval; | |
| 2590 nitem -= rtnval; | |
| 2591 items_read += rtnval; | |
| 2592 } | |
| 2593 return (items_read); | |
| 2594 } | |
| 771 | 2595 |
| 428 | 2596 size_t |
| 771 | 2597 retry_fwrite (const void *ptr, size_t size, size_t nitem, FILE *stream) |
| 428 | 2598 { |
| 2599 size_t rtnval; | |
| 2600 size_t items_written = 0; | |
| 442 | 2601 const char *b = (const char *) ptr; |
| 428 | 2602 |
| 2603 while (nitem > 0) | |
| 2604 { | |
| 2605 rtnval = fwrite (b, size, nitem, stream); | |
| 2606 if (rtnval == 0) | |
| 2607 { | |
| 2608 if (ferror (stream) && errno == EINTR) | |
| 2609 continue; | |
| 2610 else | |
| 2611 return items_written; | |
| 2612 } | |
| 2613 b += size*rtnval; | |
| 2614 nitem -= rtnval; | |
| 2615 items_written += rtnval; | |
| 2616 } | |
| 2617 return (items_written); | |
| 2618 } | |
| 2619 | |
| 2620 /********************* directory calls *******************/ | |
| 2621 | |
| 2622 int | |
| 867 | 2623 qxe_chdir (const Ibyte *path) |
| 428 | 2624 { |
| 771 | 2625 Extbyte *pathout; |
| 2626 PATHNAME_CONVERT_OUT (path, pathout); | |
| 442 | 2627 #ifdef WIN32_NATIVE |
| 771 | 2628 if (XEUNICODE_P) |
| 2629 return _wchdir ((const wchar_t *) pathout); | |
| 2630 else | |
| 2631 return _chdir (pathout); | |
| 428 | 2632 #else |
| 771 | 2633 return chdir (pathout); |
| 428 | 2634 #endif |
| 2635 } | |
| 771 | 2636 |
| 2637 int | |
| 2340 | 2638 qxe_mkdir (const Ibyte *path, |
| 2639 #ifdef WIN32_NATIVE | |
| 2640 mode_t UNUSED (mode) | |
| 2641 #else | |
| 2642 mode_t mode | |
| 2643 #endif | |
| 2644 ) | |
| 771 | 2645 { |
| 2646 Extbyte *pathout; | |
| 2647 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2648 #ifdef WIN32_NATIVE | |
| 2649 if (XEUNICODE_P) | |
| 2650 return _wmkdir ((const wchar_t *) pathout); | |
| 2651 else | |
| 2652 return _mkdir (pathout); | |
| 2653 #else | |
| 2654 return mkdir (pathout, mode); | |
| 2655 #endif | |
| 2656 } | |
| 2657 | |
| 428 | 2658 DIR * |
| 867 | 2659 qxe_opendir (const Ibyte *filename) |
| 428 | 2660 { |
| 771 | 2661 #ifdef WIN32_NATIVE |
| 2662 return mswindows_opendir (filename); | |
| 2663 #else | |
| 428 | 2664 DIR *rtnval; |
| 771 | 2665 Extbyte *pathout; |
| 2666 PATHNAME_CONVERT_OUT (filename, pathout); | |
| 2667 | |
| 2668 while (!(rtnval = opendir (pathout)) | |
| 428 | 2669 && (errno == EINTR)) |
| 2670 ; | |
| 2671 return rtnval; | |
| 771 | 2672 #endif /* WIN32_NATIVE */ |
| 428 | 2673 } |
| 771 | 2674 |
| 428 | 2675 DIRENTRY * |
| 771 | 2676 qxe_readdir (DIR *dirp) |
| 428 | 2677 { |
| 771 | 2678 #ifdef WIN32_NATIVE |
| 2679 return mswindows_readdir (dirp); | |
| 2680 #else /* not WIN32_NATIVE */ | |
| 428 | 2681 DIRENTRY *rtnval; |
| 2682 | |
| 2683 /* Apparently setting errno is necessary on some systems? | |
| 2684 Maybe readdir() doesn't always set errno ?! */ | |
| 2685 while (!(errno = 0, rtnval = readdir (dirp)) | |
| 2686 && (errno == EINTR)) | |
| 2687 ; | |
| 2688 #ifndef MULE | |
| 2689 return rtnval; | |
| 2690 #else /* MULE */ | |
| 2691 if (rtnval == NULL) /* End of directory */ | |
| 2692 return NULL; | |
| 2693 { | |
| 442 | 2694 const Extbyte * const external_name = (const Extbyte *) rtnval->d_name; |
| 665 | 2695 Bytecount external_len = strlen (rtnval->d_name); |
| 867 | 2696 const Ibyte *internal_name; |
| 462 | 2697 Bytecount internal_len; |
| 513 | 2698 |
| 462 | 2699 TO_INTERNAL_FORMAT (DATA, (external_name, external_len), |
| 2700 ALLOCA, (internal_name, internal_len), | |
| 2701 Qfile_name); | |
| 2702 | |
| 2703 /* check for common case of ASCII filename */ | |
| 2704 if (internal_len == external_len && | |
| 2705 !memcmp (external_name, internal_name, internal_len)) | |
| 428 | 2706 return rtnval; |
| 2707 | |
| 2708 { /* Non-ASCII filename */ | |
| 867 | 2709 static Ibyte_dynarr *internal_DIRENTRY; |
| 428 | 2710 if (!internal_DIRENTRY) |
| 867 | 2711 internal_DIRENTRY = Dynarr_new (Ibyte); |
| 428 | 2712 else |
| 2713 Dynarr_reset (internal_DIRENTRY); | |
| 2714 | |
| 867 | 2715 Dynarr_add_many (internal_DIRENTRY, (Ibyte *) rtnval, |
| 428 | 2716 offsetof (DIRENTRY, d_name)); |
| 2717 | |
| 2718 | |
| 2719 Dynarr_add_many (internal_DIRENTRY, internal_name, internal_len); | |
| 444 | 2720 Dynarr_add (internal_DIRENTRY, '\0'); /* NUL-terminate */ |
| 4967 | 2721 return (DIRENTRY *) Dynarr_begin (internal_DIRENTRY); |
| 428 | 2722 } |
| 2723 } | |
| 2724 #endif /* MULE */ | |
| 771 | 2725 #endif /* WIN32_NATIVE */ |
| 428 | 2726 } |
| 771 | 2727 |
| 428 | 2728 int |
| 771 | 2729 qxe_closedir (DIR *dirp) |
| 428 | 2730 { |
| 771 | 2731 #ifdef WIN32_NATIVE |
| 2732 return mswindows_closedir (dirp); | |
| 2733 #else /* not WIN32_NATIVE */ | |
| 428 | 2734 int rtnval; |
| 2735 | |
| 2736 while ((rtnval = closedir (dirp)) == -1 | |
| 2737 && (errno == EINTR)) | |
| 2738 ; | |
| 2739 return rtnval; | |
| 771 | 2740 #endif /* WIN32_NATIVE */ |
| 428 | 2741 } |
| 771 | 2742 |
| 428 | 2743 int |
| 867 | 2744 qxe_rmdir (const Ibyte *path) |
| 771 | 2745 { |
| 2746 Extbyte *pathout; | |
| 2747 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2748 #ifdef WIN32_NATIVE | |
| 2749 if (XEUNICODE_P) | |
| 2750 return _wrmdir ((const wchar_t *) pathout); | |
| 2751 else | |
| 2752 return _rmdir (pathout); | |
| 2753 #else | |
| 2754 return rmdir (pathout); | |
| 2755 #endif | |
| 2756 } | |
| 2757 | |
| 867 | 2758 Ibyte * |
| 771 | 2759 qxe_allocating_getcwd (void) |
| 428 | 2760 { |
| 771 | 2761 #ifdef HAVE_GETCWD |
| 2762 Bytecount cwdsize = 1024; | |
| 2763 Extbyte *cwd = xnew_array (Extbyte, cwdsize); | |
| 2764 | |
| 2765 /* Many getcwd()'s can take a NULL argument and malloc() the right amount | |
| 2766 of data, but this is non-standard. */ | |
| 2767 while (1) | |
| 2768 { | |
| 2769 #ifdef WIN32_NATIVE | |
| 2770 Extbyte *ret; | |
| 2771 | |
| 2772 if (XEUNICODE_P) | |
| 2773 ret = (Extbyte *) _wgetcwd ((wchar_t *) cwd, | |
| 2774 cwdsize / sizeof (wchar_t)); | |
| 2775 else | |
| 2776 ret = _getcwd (cwd, cwdsize); | |
| 2777 | |
| 2778 if (ret) | |
| 2779 { | |
| 867 | 2780 Ibyte *retin; |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2781 retin = TSTR_TO_ITEXT_MALLOC (ret); |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2782 xfree (cwd); |
| 771 | 2783 return retin; |
| 2784 } | |
| 2785 #else | |
| 2786 Extbyte *ret = getcwd (cwd, cwdsize); | |
| 2787 if (ret) | |
| 2788 { | |
| 867 | 2789 Ibyte *retin; |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2790 retin = EXTERNAL_TO_ITEXT_MALLOC (ret, Qfile_name); |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2791 xfree (cwd); |
| 771 | 2792 return retin; |
| 2793 } | |
| 2794 #endif /* WIN32_NATIVE */ | |
| 2795 | |
| 2796 if (errno == ERANGE) | |
| 2797 { | |
| 2798 cwdsize *= 2; | |
| 2799 XREALLOC_ARRAY (cwd, Extbyte, cwdsize); | |
| 2800 } | |
| 2801 else | |
| 2802 { | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2803 xfree (cwd); |
| 771 | 2804 return NULL; |
| 2805 } | |
| 2806 } | |
| 2807 #else | |
| 4854 | 2808 Extbyte chingame_limitos_arbitrarios[PATH_MAX_TCHAR]; |
| 867 | 2809 Ibyte *ret2; |
| 771 | 2810 |
| 2811 if (!getwd (chingame_limitos_arbitrarios)) | |
| 2812 return 0; | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2813 ret2 = EXTERNAL_TO_ITEXT_MALLOC (chingame_limitos_arbitrarios, Qfile_name); |
| 771 | 2814 return ret2; |
| 2815 #endif /* HAVE_GETCWD */ | |
| 428 | 2816 } |
| 2817 | |
| 2818 /***************** file-information calls ******************/ | |
| 2819 | |
| 2820 int | |
| 867 | 2821 qxe_access (const Ibyte *path, int mode) |
| 428 | 2822 { |
| 771 | 2823 #ifdef WIN32_NATIVE |
| 2824 return mswindows_access (path, mode); | |
| 2825 #else /* not WIN32_NATIVE */ | |
| 2826 Extbyte *pathout; | |
| 2827 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2828 return access (pathout, mode); | |
| 2829 #endif /* WIN32_NATIVE */ | |
| 428 | 2830 } |
| 771 | 2831 |
| 2832 #if defined (HAVE_EACCESS) | |
| 428 | 2833 int |
| 867 | 2834 qxe_eaccess (const Ibyte *path, int mode) |
| 428 | 2835 { |
| 771 | 2836 Extbyte *pathout; |
| 2837 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2838 return eaccess (pathout, mode); | |
| 428 | 2839 } |
| 771 | 2840 #endif /* defined (HAVE_EACCESS) */ |
| 2841 | |
| 428 | 2842 int |
| 867 | 2843 qxe_lstat (const Ibyte *path, struct stat *buf) |
| 428 | 2844 { |
| 771 | 2845 /* if system does not have symbolic links, it does not have lstat. |
| 2846 In that case, use ordinary stat instead. */ | |
| 2847 #ifndef S_IFLNK | |
| 2848 return qxe_stat (path, buf); | |
| 2526 | 2849 #elif defined (WIN32_NATIVE) |
| 2850 if (mswindows_shortcuts_are_symlinks) | |
| 2851 { | |
| 2852 /* We want to resolve the directory component and leave the rest | |
| 2853 alone. */ | |
| 2854 Ibyte *dirend = find_end_of_directory_component (path, qxestrlen (path)); | |
| 2855 Bytecount len; | |
| 2856 | |
| 2857 if (dirend != path) | |
| 2858 { | |
| 2859 Ibyte *resdir; | |
| 2860 Ichar lastch; | |
| 2861 DECLARE_EISTRING (resname); | |
| 2862 DECLARE_EISTRING (dir); | |
| 2863 | |
| 2864 eicpy_raw (dir, path, dirend - path); | |
| 2865 PATHNAME_RESOLVE_LINKS (eidata (dir), resdir); | |
| 2866 eicpy_rawz (resname, resdir); | |
| 2867 lastch = eigetch_char (resname, eicharlen (resname) - 1); | |
| 2868 if (!IS_DIRECTORY_SEP (lastch)) | |
| 2869 eicat_ch (resname, '\\'); | |
| 2870 eicat_rawz (resname, dirend); | |
| 2871 path = eidata (resname); | |
| 2872 } | |
| 2873 | |
| 2874 /* However, if what we are trying to stat is a link, we need to add | |
| 2875 the .LNK so that the actual file is statted. */ | |
| 2876 len = qxestrlen (path); | |
| 2877 if (len > 4 && qxestrcasecmp_ascii (path + len - 4, ".LNK")) | |
| 2878 { | |
| 2879 DECLARE_EISTRING (name2); | |
| 2880 Ibyte *resolved; | |
| 2881 | |
| 2882 eicpy_rawz (name2, path); | |
| 2883 eicat_ascii (name2, ".LNK"); | |
| 2884 resolved = mswindows_read_link (eidata (name2)); | |
| 2885 if (resolved) | |
| 2886 { | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2887 xfree (resolved); |
| 2526 | 2888 return mswindows_stat (eidata (name2), buf); |
| 2889 } | |
| 2890 } | |
| 2891 } | |
| 2892 | |
| 2893 return mswindows_stat (path, buf); | |
| 771 | 2894 #else |
| 2895 Extbyte *pathout; | |
| 2896 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2897 return lstat (pathout, buf); | |
| 2898 #endif | |
| 428 | 2899 } |
| 771 | 2900 |
| 2901 #if defined (HAVE_READLINK) | |
| 428 | 2902 int |
| 867 | 2903 qxe_readlink (const Ibyte *path, Ibyte *buf, size_t bufsiz) |
| 428 | 2904 { |
| 771 | 2905 int retval; |
| 2906 Extbyte *pathout; | |
| 2907 | |
| 2908 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2909 retval = readlink (pathout, (char *) buf, bufsiz); | |
| 2910 if (retval < 0) | |
| 2911 return retval; | |
| 2912 { | |
| 867 | 2913 Ibyte *intbuf; |
| 771 | 2914 Bytecount tamanho; |
| 2915 | |
| 2916 TO_INTERNAL_FORMAT (DATA, (buf, retval), | |
| 2917 ALLOCA, (intbuf, tamanho), Qfile_name); | |
| 2918 /* the man page says this function does not null-terminate */ | |
| 2919 if (tamanho >= (Bytecount) bufsiz) | |
| 2920 tamanho = bufsiz; | |
| 2921 memcpy (buf, intbuf, tamanho); | |
| 2922 return tamanho; | |
| 2923 } | |
| 428 | 2924 } |
| 771 | 2925 #endif /* defined (HAVE_READLINK) */ |
| 2926 | |
| 432 | 2927 int |
| 771 | 2928 qxe_fstat (int fd, struct stat *buf) |
| 432 | 2929 { |
| 442 | 2930 #ifdef WIN32_NATIVE |
| 2931 return mswindows_fstat (fd, buf); | |
| 2932 #else | |
| 432 | 2933 return fstat (fd, buf); |
| 771 | 2934 #endif /* WIN32_NATIVE */ |
| 432 | 2935 } |
| 2936 | |
| 428 | 2937 int |
| 867 | 2938 qxe_stat (const Ibyte *path, struct stat *buf) |
| 428 | 2939 { |
| 442 | 2940 #ifdef WIN32_NATIVE |
| 2526 | 2941 Ibyte *resolved; |
| 2942 PATHNAME_RESOLVE_LINKS (path, resolved); | |
| 2943 return mswindows_stat (resolved, buf); | |
| 771 | 2944 #else /* not WIN32_NATIVE */ |
| 2945 Extbyte *pathout; | |
| 2946 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2947 return stat (pathout, buf); | |
| 2948 #endif /* WIN32_NATIVE */ | |
| 428 | 2949 } |
| 2950 | |
| 771 | 2951 |
| 428 | 2952 /****************** file-manipulation calls *****************/ |
| 2953 | |
| 2954 int | |
| 867 | 2955 qxe_chmod (const Ibyte *path, mode_t mode) |
| 428 | 2956 { |
| 771 | 2957 Extbyte *pathout; |
| 2958 PATHNAME_CONVERT_OUT (path, pathout); | |
| 2959 #ifdef WIN32_NATIVE | |
| 2960 if (XEUNICODE_P) | |
| 2961 return _wchmod ((const wchar_t *) pathout, mode); | |
| 2962 else | |
| 2963 return _chmod (pathout, mode); | |
| 2964 #else | |
| 2965 return chmod (pathout, mode); | |
| 2966 #endif | |
| 428 | 2967 } |
| 771 | 2968 |
| 2969 #if defined (HAVE_LINK) | |
| 428 | 2970 int |
| 2957 | 2971 qxe_link (const Ibyte *existing, const Ibyte *new_) |
| 428 | 2972 { |
| 771 | 2973 #ifdef WIN32_NATIVE |
| 2957 | 2974 return mswindows_link (existing, new_); |
| 771 | 2975 #else /* not WIN32_NATIVE */ |
| 2976 Extbyte *existingout, *newout; | |
| 2977 PATHNAME_CONVERT_OUT (existing, existingout); | |
| 2957 | 2978 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 2979 return link (existingout, newout); |
| 2980 #endif /* WIN32_NATIVE */ | |
| 428 | 2981 } |
| 771 | 2982 #endif /* defined (HAVE_LINK) */ |
| 2983 | |
| 428 | 2984 int |
| 2957 | 2985 qxe_rename (const Ibyte *old, const Ibyte *new_) |
| 428 | 2986 { |
| 442 | 2987 #ifdef WIN32_NATIVE |
| 2957 | 2988 return mswindows_rename (old, new_); |
| 771 | 2989 #else /* not WIN32_NATIVE */ |
| 2990 Extbyte *oldout, *newout; | |
| 2991 PATHNAME_CONVERT_OUT (old, oldout); | |
| 2957 | 2992 PATHNAME_CONVERT_OUT (new_, newout); |
| 771 | 2993 return rename (oldout, newout); |
| 442 | 2994 #endif /* WIN32_NATIVE */ |
| 428 | 2995 } |
| 771 | 2996 |
| 2997 #if defined (HAVE_SYMLINK) | |
| 428 | 2998 int |
| 867 | 2999 qxe_symlink (const Ibyte *name1, const Ibyte *name2) |
| 428 | 3000 { |
| 771 | 3001 Extbyte *name1out, *name2out; |
| 3002 PATHNAME_CONVERT_OUT (name1, name1out); | |
| 3003 PATHNAME_CONVERT_OUT (name2, name2out); | |
| 3004 return symlink (name1out, name2out); | |
| 428 | 3005 } |
| 771 | 3006 #endif /* defined (HAVE_SYMLINK) */ |
| 3007 | |
| 428 | 3008 int |
| 867 | 3009 qxe_unlink (const Ibyte *path) |
| 428 | 3010 { |
| 771 | 3011 #ifdef WIN32_NATIVE |
| 3012 return mswindows_unlink (path); | |
| 3013 #else /* not WIN32_NATIVE */ | |
| 3014 Extbyte *pathout; | |
| 3015 PATHNAME_CONVERT_OUT (path, pathout); | |
| 3016 return unlink (pathout); | |
| 3017 #endif /* WIN32_NATIVE */ | |
| 428 | 3018 } |
| 771 | 3019 |
| 3020 | |
| 3021 /****************** process calls *****************/ | |
| 3022 | |
| 428 | 3023 int |
| 867 | 3024 qxe_execve (const Ibyte *filename, Ibyte * const argv[], |
| 3025 Ibyte * const envp[]) | |
| 428 | 3026 { |
| 771 | 3027 int i, argc, envc; |
| 3028 Extbyte *pathext; | |
| 3029 Extbyte **new_argv; | |
| 3030 Extbyte **new_envp; | |
| 3031 | |
| 3032 PATHNAME_CONVERT_OUT (filename, pathext); | |
| 3033 | |
| 428 | 3034 for (argc = 0; argv[argc]; argc++) |
| 3035 ; | |
| 771 | 3036 new_argv = alloca_array (Extbyte *, argc + 1); |
| 428 | 3037 for (i = 0; i < argc; i++) |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3038 new_argv[i] = ITEXT_TO_EXTERNAL (argv[i], Qcommand_argument_encoding); |
| 428 | 3039 new_argv[argc] = NULL; |
| 771 | 3040 |
| 3041 for (envc = 0; envp[envc]; envc++) | |
| 3042 ; | |
| 3043 new_envp = alloca_array (Extbyte *, envc + 1); | |
| 3044 for (i = 0; i < envc; i++) | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3045 new_envp[i] = ITEXT_TO_EXTERNAL (envp[i], Qenvironment_variable_encoding); |
| 771 | 3046 new_envp[envc] = NULL; |
| 3047 | |
| 1318 | 3048 #if defined (WIN32_NATIVE) |
| 3049 if (XEUNICODE_P) | |
| 3050 return _wexecve ((const wchar_t *) pathext, | |
| 3051 (const wchar_t * const *) new_argv, | |
| 3052 (const wchar_t * const *) new_envp); | |
| 3053 #endif | |
| 771 | 3054 return execve (pathext, new_argv, new_envp); |
| 3055 } | |
| 3056 | |
| 3057 pid_t | |
| 3058 qxe_getpid (void) | |
| 3059 { | |
| 3060 #ifdef WIN32_NATIVE | |
| 3061 return abs (getpid ()); | |
| 3062 #else | |
| 3063 return getpid (); | |
| 3064 #endif | |
| 428 | 3065 } |
| 771 | 3066 |
| 3067 | |
| 3068 /****************** passwd calls *****************/ | |
| 3069 | |
| 3070 struct passwd cached_pwd; | |
| 3071 | |
| 3072 static struct passwd * | |
| 3073 copy_in_passwd (struct passwd *pwd) | |
| 3074 { | |
| 3075 if (!pwd) | |
| 3076 return NULL; | |
| 3077 | |
| 3078 if (cached_pwd.pw_name) | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3079 xfree (cached_pwd.pw_name); |
| 771 | 3080 if (cached_pwd.pw_passwd) |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3081 xfree (cached_pwd.pw_passwd); |
| 771 | 3082 if (cached_pwd.pw_gecos) |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3083 xfree (cached_pwd.pw_gecos); |
| 771 | 3084 if (cached_pwd.pw_dir) |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3085 xfree (cached_pwd.pw_dir); |
| 771 | 3086 if (cached_pwd.pw_shell) |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3087 xfree (cached_pwd.pw_shell); |
| 771 | 3088 |
| 3089 cached_pwd = *pwd; | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3090 |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3091 #define FROB(field, encoding) \ |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3092 do \ |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3093 { \ |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3094 if (cached_pwd.field) \ |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3095 cached_pwd.field = (CIbyte *) \ |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3096 EXTERNAL_TO_ITEXT_MALLOC (cached_pwd.field, encoding); \ |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3097 } while (0) |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3098 |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3099 FROB (pw_name, Quser_name_encoding); |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3100 FROB (pw_passwd, Quser_name_encoding); |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3101 FROB (pw_gecos, Quser_name_encoding); |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3102 FROB (pw_dir, Qfile_name); |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3103 FROB (pw_shell, Qfile_name); |
|
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3104 #undef FROB |
| 771 | 3105 return &cached_pwd; |
| 3106 } | |
| 3107 | |
| 3108 struct passwd * | |
| 867 | 3109 qxe_getpwnam (const Ibyte *name) |
| 771 | 3110 { |
| 3111 #ifdef WIN32_NATIVE | |
| 3112 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3113 return getpwnam (name); | |
| 3114 #else | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3115 Extbyte *nameext = ITEXT_TO_EXTERNAL (name, Quser_name_encoding); |
| 771 | 3116 |
| 3117 return copy_in_passwd (getpwnam (nameext)); | |
| 3118 #endif /* WIN32_NATIVE */ | |
| 3119 } | |
| 3120 | |
| 3121 struct passwd * | |
| 3122 qxe_getpwuid (uid_t uid) | |
| 3123 { | |
| 3124 #ifdef WIN32_NATIVE | |
| 3125 /* Synthetic versions are defined in nt.c and already do conversion. */ | |
| 3126 return getpwuid (uid); | |
| 3127 #else | |
| 3128 return copy_in_passwd (getpwuid (uid)); | |
| 3129 #endif /* WIN32_NATIVE */ | |
| 3130 } | |
| 3131 | |
|
5733
c30fdcab7bc8
Added optional argument ID-FORMAT to file-attributes for GNU compatibility.
Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
changeset
|
3132 struct group * |
|
c30fdcab7bc8
Added optional argument ID-FORMAT to file-attributes for GNU compatibility.
Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
changeset
|
3133 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
|
3134 { |
|
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
|
3135 #ifdef WIN32_NATIVE |
|
ff13c44ce0d9
Hack in rudimentary group support for WIN32 in support of Mats ID-FORMAT patch
Vin Shelton <acs@xemacs.org>
parents:
5733
diff
changeset
|
3136 return NULL; |
|
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 #else |
|
ff13c44ce0d9
Hack in rudimentary group support for WIN32 in support of Mats ID-FORMAT patch
Vin Shelton <acs@xemacs.org>
parents:
5733
diff
changeset
|
3138 return getgrgid (gid); |
|
ff13c44ce0d9
Hack in rudimentary group support for WIN32 in support of Mats ID-FORMAT patch
Vin Shelton <acs@xemacs.org>
parents:
5733
diff
changeset
|
3139 #endif /* WIN32_NATIVE */ |
|
5733
c30fdcab7bc8
Added optional argument ID-FORMAT to file-attributes for GNU compatibility.
Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
changeset
|
3140 } |
|
c30fdcab7bc8
Added optional argument ID-FORMAT to file-attributes for GNU compatibility.
Mats Lidell <mats.lidell@cag.se>
parents:
5581
diff
changeset
|
3141 |
| 771 | 3142 #ifndef WIN32_NATIVE |
| 3143 | |
| 3144 struct passwd * | |
| 3145 qxe_getpwent (void) | |
| 3146 { | |
| 3147 /* No WIN32_NATIVE version of this. */ | |
| 3148 return copy_in_passwd (getpwent ()); | |
| 3149 } | |
| 3150 | |
| 3151 #endif /* not WIN32_NATIVE */ | |
| 3152 | |
| 3153 /****************** time calls *****************/ | |
| 3154 | |
| 867 | 3155 static Ibyte *ctime_static; |
| 3156 | |
| 3157 Ibyte * | |
| 771 | 3158 qxe_ctime (const time_t *t) |
| 3159 { | |
| 3160 Extbyte *str = (Extbyte *) ctime (t); | |
| 3161 if (!str) /* can happen on MS Windows */ | |
| 867 | 3162 return (Ibyte *) "Sun Jan 01 00:00:00 1970"; |
| 771 | 3163 if (ctime_static) |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3164 xfree (ctime_static); |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3165 ctime_static = EXTERNAL_TO_ITEXT_MALLOC (str, Qtime_function_encoding); |
| 771 | 3166 return ctime_static; |
| 3167 } | |
| 428 | 3168 |
| 1204 | 3169 |
| 912 | 3170 /************************************************************************/ |
| 3171 /* Emulation of missing functions from wchar.h */ | |
| 3172 /************************************************************************/ | |
| 3173 | |
| 3174 #ifndef HAVE_WCHAR_H | |
| 3175 size_t | |
| 2367 | 3176 wcslen (const wchar_t *s) |
| 912 | 3177 { |
| 3700 | 3178 const wchar_t *p = s; |
| 3648 | 3179 if (s == NULL) return NULL; |
| 912 | 3180 |
| 3181 while (*p++) | |
| 3182 ; | |
| 3183 | |
| 3184 return p - s; | |
| 3185 } | |
| 3186 #endif | |
| 1204 | 3187 |
| 3188 /************************************************************************/ | |
| 3189 /* Emulation of missing functions from string.h */ | |
| 3190 /************************************************************************/ | |
| 3191 | |
| 3192 #ifndef HAVE_STRLWR | |
| 3193 char * | |
| 3194 strlwr (char *s) | |
| 3195 { | |
| 3700 | 3196 REGISTER char *c; |
| 3648 | 3197 if (s == NULL) return NULL; |
| 1271 | 3198 |
| 3199 for (c = s; *c; c++) | |
| 1204 | 3200 { |
| 1271 | 3201 *c = tolower (*c); |
| 1204 | 3202 } |
| 1271 | 3203 return s; |
| 1204 | 3204 } |
| 3205 #endif | |
| 3206 | |
| 1271 | 3207 #ifndef HAVE_STRUPR |
| 1204 | 3208 char * |
| 3209 strupr (char *s) | |
| 3210 { | |
| 1271 | 3211 REGISTER char *c; |
| 3212 | |
| 3213 for (c = s; *c; c++) | |
| 1204 | 3214 { |
| 1271 | 3215 *c = toupper (*c); |
| 1204 | 3216 } |
| 1271 | 3217 return s; |
| 1204 | 3218 } |
| 3219 #endif | |
| 912 | 3220 |
| 428 | 3221 |
| 3222 /************************************************************************/ | |
| 3223 /* Emulations of missing system calls */ | |
| 3224 /************************************************************************/ | |
| 3225 | |
| 3226 /***** (these are primarily required for USG, it seems) *****/ | |
| 3227 | |
| 3228 /* | |
| 3229 * Emulate rename using unlink/link. Note that this is | |
| 3230 * only partially correct. Also, doesn't enforce restriction | |
| 3231 * that files be of same type (regular->regular, dir->dir, etc). | |
| 3232 */ | |
| 3233 | |
| 3234 #ifndef HAVE_RENAME | |
| 3235 int | |
| 771 | 3236 rename (const Extbyte *from, const Extbyte *to) |
| 428 | 3237 { |
| 3238 if (access (from, 0) == 0) | |
| 3239 { | |
| 3240 unlink (to); | |
| 3241 if (link (from, to) == 0) | |
| 3242 if (unlink (from) == 0) | |
| 3243 return (0); | |
| 3244 } | |
| 3245 return (-1); | |
| 3246 } | |
| 3247 #endif /* HAVE_RENAME */ | |
| 3248 | |
| 3249 #ifdef HPUX | |
| 3250 #ifndef HAVE_PERROR | |
| 3251 | |
| 3252 /* HPUX curses library references perror, but as far as we know | |
| 3253 it won't be called. Anyway this definition will do for now. */ | |
| 3254 | |
| 3255 perror (void) | |
| 3256 { | |
| 3257 } | |
| 3258 | |
| 3259 #endif /* not HAVE_PERROR */ | |
| 3260 #endif /* HPUX */ | |
| 3261 | |
| 3262 #ifndef HAVE_DUP2 | |
| 3263 | |
| 3264 /* | |
| 3265 * Emulate BSD dup2. First close newd if it already exists. | |
| 3266 * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
| 3267 * until we are, then close the unsuccessful ones. | |
| 3268 */ | |
| 3269 | |
| 3270 int | |
| 3271 dup2 (int oldd, int newd) | |
| 3272 { | |
| 3273 int fd, ret; | |
| 3274 | |
| 771 | 3275 retry_close (newd); |
| 428 | 3276 |
| 3277 #ifdef F_DUPFD | |
| 3278 fd = fcntl (oldd, F_DUPFD, newd); | |
| 3279 if (fd != newd) | |
| 563 | 3280 signal_ferror_with_frob (Qfile_error, lisp_strerror (errno), |
| 3281 "can't dup2 (%i, %i)", oldd, newd); | |
| 428 | 3282 #else |
| 2957 | 3283 fd = dup (oldd); |
| 428 | 3284 if (fd == -1) |
| 3285 return -1; | |
| 2957 | 3286 if (fd == newd) |
| 3287 return newd; | |
| 3288 ret = dup2 (oldd, newd); | |
| 771 | 3289 retry_close (fd); |
| 428 | 3290 return ret; |
| 3291 #endif /* F_DUPFD */ | |
| 3292 } | |
| 3293 | |
| 3294 #endif /* not HAVE_DUP2 */ | |
| 3295 | |
| 3296 /* | |
| 3297 * Gettimeofday. Simulate as much as possible. Only accurate | |
| 3298 * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
| 3299 */ | |
| 3300 | |
| 3301 #if !defined (HAVE_GETTIMEOFDAY) | |
| 3302 | |
| 3303 int | |
| 3304 gettimeofday (struct timeval *tp, struct timezone *tzp) | |
| 3305 { | |
| 3306 extern long time (); | |
| 3307 | |
| 3308 tp->tv_sec = time ((long *)0); | |
| 3309 tp->tv_usec = 0; | |
| 3310 if (tzp != 0) | |
| 3311 tzp->tz_minuteswest = -1; | |
| 3312 return (0); | |
| 3313 } | |
| 3314 | |
| 3315 #endif /* !HAVE_GETTIMEOFDAY */ | |
| 3316 | |
| 3317 /* No need to encapsulate utime and utimes explicitly because all | |
| 3318 access to those functions goes through the following. */ | |
| 3319 | |
| 3320 int | |
| 2340 | 3321 set_file_times ( |
| 3322 #if defined (WIN32_NATIVE) || defined (HAVE_UTIME) || defined (HAVE_UTIMES) | |
| 3323 Lisp_Object path, EMACS_TIME atime, EMACS_TIME mtime | |
| 3324 #else | |
| 3325 Lisp_Object UNUSED (path), EMACS_TIME UNUSED (atime), | |
| 3326 EMACS_TIME UNUSED (mtime) | |
| 3327 #endif | |
| 3328 ) | |
| 428 | 3329 { |
| 592 | 3330 #if defined (WIN32_NATIVE) |
| 460 | 3331 struct utimbuf utb; |
| 3332 utb.actime = EMACS_SECS (atime); | |
| 3333 utb.modtime = EMACS_SECS (mtime); | |
| 592 | 3334 return mswindows_utime (path, &utb); |
| 3335 #elif defined (HAVE_UTIME) | |
| 3336 struct utimbuf utb; | |
| 3337 Extbyte *filename; | |
| 3338 utb.actime = EMACS_SECS (atime); | |
| 3339 utb.modtime = EMACS_SECS (mtime); | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3340 LISP_PATHNAME_CONVERT_OUT (path, filename); |
| 460 | 3341 return utime (filename, &utb); |
| 3342 #elif defined (HAVE_UTIMES) | |
| 428 | 3343 struct timeval tv[2]; |
| 592 | 3344 Extbyte *filename; |
| 428 | 3345 tv[0] = atime; |
| 3346 tv[1] = mtime; | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3347 LISP_PATHNAME_CONVERT_OUT (path, filename); |
| 428 | 3348 return utimes (filename, tv); |
| 460 | 3349 #else |
| 3350 /* No file times setting function available. */ | |
| 3351 return -1; | |
| 3352 #endif | |
| 428 | 3353 } |
| 3354 | |
| 3355 /* */ | |
| 3356 | |
| 3357 static long ticks_per_second; | |
| 3358 static long orig_user_ticks, orig_system_ticks; | |
| 3359 EMACS_TIME orig_real_time; | |
| 3360 | |
| 3361 static int process_times_available; | |
| 3362 | |
| 3363 /* Return the relative user and system tick count. We try to | |
| 3364 maintain calculations in terms of integers as long as possible | |
| 3365 for increased accuracy. */ | |
| 3366 | |
| 3367 static int | |
| 2340 | 3368 get_process_times_1 ( |
| 3369 #if defined (CLOCKS_PER_SEC) || defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) | |
| 3370 long *user_ticks, long *system_ticks | |
| 3371 #else | |
| 3372 long *UNUSED (user_ticks), long *UNUSED (system_ticks) | |
| 3373 #endif | |
| 3374 ) | |
| 428 | 3375 { |
| 442 | 3376 #if defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE) |
| 428 | 3377 /* We have the POSIX times() function available. */ |
| 777 | 3378 /* #### Perhaps we should just use a configure test for times()? */ |
| 428 | 3379 struct tms tttt; |
| 3380 times (&tttt); | |
| 3381 *user_ticks = (long) tttt.tms_utime; | |
| 3382 *system_ticks = (long) tttt.tms_stime; | |
| 3383 return 1; | |
| 3384 #elif defined (CLOCKS_PER_SEC) | |
| 3385 *user_ticks = (long) clock (); | |
| 3386 *system_ticks = 0; | |
| 3387 return 1; | |
| 3388 #else | |
| 3389 return 0; | |
| 3390 #endif | |
| 3391 } | |
| 3392 | |
| 3393 void | |
| 3394 init_process_times_very_early (void) | |
| 3395 { | |
| 3396 #if defined (_SC_CLK_TCK) | |
| 3397 ticks_per_second = sysconf (_SC_CLK_TCK); | |
| 3398 #elif defined (CLK_TCK) | |
| 3399 ticks_per_second = CLK_TCK; | |
| 3400 #elif defined (CLOCKS_PER_SEC) | |
| 3401 ticks_per_second = CLOCKS_PER_SEC; | |
| 3402 #endif | |
| 3403 | |
| 3404 process_times_available = get_process_times_1 (&orig_user_ticks, | |
| 3405 &orig_system_ticks); | |
| 3406 EMACS_GET_TIME (orig_real_time); | |
| 3407 } | |
| 3408 | |
| 3409 /* Return the user and system times used up by this process so far. */ | |
| 3410 void | |
| 3411 get_process_times (double *user_time, double *system_time, double *real_time) | |
| 3412 { | |
| 3413 EMACS_TIME curr_real_time; | |
| 3414 EMACS_TIME elapsed_time; | |
| 3415 long curr_user_ticks, curr_system_ticks; | |
| 3416 | |
| 3417 EMACS_GET_TIME (curr_real_time); | |
| 3418 EMACS_SUB_TIME (elapsed_time, curr_real_time, orig_real_time); | |
| 3419 *real_time = (EMACS_SECS (elapsed_time) | |
| 3420 + ((double) EMACS_USECS (elapsed_time)) / 1000000); | |
| 3421 if (get_process_times_1 (&curr_user_ticks, &curr_system_ticks)) | |
| 3422 { | |
| 3423 *user_time = (((double) (curr_user_ticks - orig_user_ticks)) | |
| 3424 / ticks_per_second); | |
| 3425 *system_time = (((double) (curr_system_ticks - orig_system_ticks)) | |
| 3426 / ticks_per_second); | |
| 3427 } | |
| 3428 else | |
| 3429 { | |
| 3430 /* A lame OS */ | |
| 3431 *user_time = *real_time; | |
| 3432 *system_time = 0; | |
| 3433 } | |
| 3434 } | |
| 3435 | |
| 3436 #ifndef HAVE_RANDOM | |
| 3437 #ifdef random | |
| 3438 #define HAVE_RANDOM | |
| 3439 #endif | |
| 3440 #endif | |
| 3441 | |
| 3442 /* Figure out how many bits the system's random number generator uses. | |
| 3443 `random' and `lrand48' are assumed to return 31 usable bits. | |
| 3444 BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
| 3445 so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
| 3446 | |
| 3447 #ifndef RAND_BITS | |
| 3448 # ifdef HAVE_RANDOM | |
| 3449 # define RAND_BITS 31 | |
| 3450 # else /* !HAVE_RANDOM */ | |
| 3451 # ifdef HAVE_LRAND48 | |
| 3452 # define RAND_BITS 31 | |
| 3453 # define random lrand48 | |
| 3454 # else /* !HAVE_LRAND48 */ | |
| 3455 # define RAND_BITS 15 | |
| 3456 # if RAND_MAX == 32767 | |
| 3457 # define random rand | |
| 3458 # else /* RAND_MAX != 32767 */ | |
| 3459 # if RAND_MAX == 2147483647 | |
| 3460 # define random() (rand () >> 16) | |
| 3461 # else /* RAND_MAX != 2147483647 */ | |
| 3462 # ifdef USG | |
| 3463 # define random rand | |
| 3464 # else | |
| 3465 # define random() (rand () >> 16) | |
| 3466 # endif /* !BSD */ | |
| 3467 # endif /* RAND_MAX != 2147483647 */ | |
| 3468 # endif /* RAND_MAX != 32767 */ | |
| 3469 # endif /* !HAVE_LRAND48 */ | |
| 3470 # endif /* !HAVE_RANDOM */ | |
| 3471 #endif /* !RAND_BITS */ | |
| 3472 | |
| 3473 void | |
| 3474 seed_random (long arg) | |
| 3475 { | |
| 3476 #ifdef HAVE_RANDOM | |
| 3477 srandom ((unsigned int)arg); | |
| 3478 #else | |
| 3479 # ifdef HAVE_LRAND48 | |
| 3480 srand48 (arg); | |
| 3481 # else | |
| 3482 srand ((unsigned int)arg); | |
| 3483 # endif | |
| 3484 #endif | |
| 1983 | 3485 #ifdef HAVE_BIGNUM |
| 3486 bignum_random_seed ((unsigned long) arg); | |
| 3487 #endif | |
| 428 | 3488 } |
| 3489 | |
| 3490 /* | |
| 3491 * Build a full Emacs-sized word out of whatever we've got. | |
| 3492 * This suffices even for a 64-bit architecture with a 15-bit rand. | |
| 3493 */ | |
| 3494 long | |
| 3495 get_random (void) | |
| 3496 { | |
| 3497 long val = random (); | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5495
diff
changeset
|
3498 #if FIXNUM_VALBITS > RAND_BITS |
| 428 | 3499 val = (val << RAND_BITS) ^ random (); |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5495
diff
changeset
|
3500 #if FIXNUM_VALBITS > 2*RAND_BITS |
| 428 | 3501 val = (val << RAND_BITS) ^ random (); |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5495
diff
changeset
|
3502 #if FIXNUM_VALBITS > 3*RAND_BITS |
| 428 | 3503 val = (val << RAND_BITS) ^ random (); |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5495
diff
changeset
|
3504 #if FIXNUM_VALBITS > 4*RAND_BITS |
| 428 | 3505 val = (val << RAND_BITS) ^ random (); |
| 3506 #endif /* need at least 5 */ | |
| 3507 #endif /* need at least 4 */ | |
| 3508 #endif /* need at least 3 */ | |
| 3509 #endif /* need at least 2 */ | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5495
diff
changeset
|
3510 return val & (EMACS_INT) ((1UL << FIXNUM_VALBITS) - 1); |
| 428 | 3511 } |
| 3512 | |
| 3513 | |
| 3514 /************************************************************************/ | |
| 3515 /* Strings corresponding to defined signals */ | |
| 3516 /************************************************************************/ | |
| 3517 | |
| 2762 | 3518 #if (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) |
| 428 | 3519 |
| 442 | 3520 #if defined(WIN32_NATIVE) || defined(CYGWIN) |
| 3521 const char *sys_siglist[] = | |
| 428 | 3522 { |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3523 /* @@@begin-snarf@@@ */ |
| 428 | 3524 "bum signal!!", |
| 3525 "hangup", | |
| 3526 "interrupt", | |
| 3527 "quit", | |
| 3528 "illegal instruction", | |
| 3529 "trace trap", | |
| 3530 "iot instruction", | |
| 3531 "emt instruction", | |
| 3532 "floating point exception", | |
| 3533 "kill", | |
| 3534 "bus error", | |
| 3535 "segmentation violation", | |
| 3536 "bad argument to system call", | |
| 3537 "write on a pipe with no one to read it", | |
| 3538 "alarm clock", | |
| 3539 "software termination signal from kill", | |
| 3540 "status signal", | |
| 3541 "sendable stop signal not from tty", | |
| 3542 "stop signal from tty", | |
| 3543 "continue a stopped process", | |
| 3544 "child status has changed", | |
| 3545 "background read attempted from control tty", | |
| 3546 "background write attempted from control tty", | |
| 3547 "input record available at control tty", | |
| 3548 "exceeded CPU time limit", | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3549 "exceeded file size limit", |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3550 /* @@@end-snarf@@@ */ |
| 428 | 3551 }; |
| 3552 #endif | |
| 3553 | |
| 3554 #ifdef USG | |
| 3555 #ifdef AIX | |
| 442 | 3556 const char *sys_siglist[NSIG + 1] = |
| 428 | 3557 { |
| 3558 /* AIX has changed the signals a bit */ | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3559 /* @@@begin-snarf@@@ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3560 "bogus signal", /* 0 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3561 "hangup", /* 1 SIGHUP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3562 "interrupt", /* 2 SIGINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3563 "quit", /* 3 SIGQUIT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3564 "illegal instruction", /* 4 SIGILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3565 "trace trap", /* 5 SIGTRAP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3566 "IOT instruction", /* 6 SIGIOT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3567 "crash likely", /* 7 SIGDANGER */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3568 "floating point exception", /* 8 SIGFPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3569 "kill", /* 9 SIGKILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3570 "bus error", /* 10 SIGBUS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3571 "segmentation violation", /* 11 SIGSEGV */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3572 "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
|
3573 "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
|
3574 "alarm clock", /* 14 SIGALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3575 "software termination signal", /* 15 SIGTERM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3576 "user defined signal 1", /* 16 SIGUSR1 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3577 "user defined signal 2", /* 17 SIGUSR2 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3578 "death of a child", /* 18 SIGCLD */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3579 "power-fail restart", /* 19 SIGPWR */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3580 "bogus signal", /* 20 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3581 "bogus signal", /* 21 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3582 "bogus signal", /* 22 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3583 "bogus signal", /* 23 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3584 "bogus signal", /* 24 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3585 "LAN I/O interrupt", /* 25 SIGAIO */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3586 "PTY I/O interrupt", /* 26 SIGPTY */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3587 "I/O intervention required", /* 27 SIGIOINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3588 /* @@@end-snarf@@@ */ |
| 428 | 3589 0 |
| 3590 }; | |
| 3591 #else /* USG, not AIX */ | |
| 442 | 3592 const char *sys_siglist[NSIG + 1] = |
| 428 | 3593 { |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3594 /* @@@begin-snarf@@@ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3595 "bogus signal", /* 0 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3596 "hangup", /* 1 SIGHUP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3597 "interrupt", /* 2 SIGINT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3598 "quit", /* 3 SIGQUIT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3599 "illegal instruction", /* 4 SIGILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3600 "trace trap", /* 5 SIGTRAP */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3601 "IOT instruction", /* 6 SIGIOT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3602 "EMT instruction", /* 7 SIGEMT */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3603 "floating point exception", /* 8 SIGFPE */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3604 "kill", /* 9 SIGKILL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3605 "bus error", /* 10 SIGBUS */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3606 "segmentation violation", /* 11 SIGSEGV */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3607 "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
|
3608 "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
|
3609 "alarm clock", /* 14 SIGALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3610 "software termination signal", /* 15 SIGTERM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3611 "user defined signal 1", /* 16 SIGUSR1 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3612 "user defined signal 2", /* 17 SIGUSR2 */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3613 "death of a child", /* 18 SIGCLD */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3614 "power-fail restart", /* 19 SIGPWR */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3615 #ifdef sun |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3616 "window size changed", /* 20 SIGWINCH */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3617 "urgent socket condition", /* 21 SIGURG */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3618 "pollable event occurred", /* 22 SIGPOLL */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3619 "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
|
3620 "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
|
3621 "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
|
3622 "background tty read attempted", /* 26 SIGTTIN */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3623 "background tty write attempted", /* 27 SIGTTOU */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3624 "virtual timer expired", /* 28 SIGVTALRM */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3625 "profiling timer expired", /* 29 SIGPROF */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3626 "exceeded cpu limit", /* 30 SIGXCPU */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3627 "exceeded file size limit", /* 31 SIGXFSZ */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3628 "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
|
3629 "special signal used by thread library", /* 33 SIGLWP */ |
| 428 | 3630 #ifdef SIGFREEZE |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3631 "special signal used by CPR", /* 34 SIGFREEZE */ |
| 428 | 3632 #endif |
| 3633 #ifdef SIGTHAW | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3634 "special signal used by CPR", /* 35 SIGTHAW */ |
| 428 | 3635 #endif |
| 3636 #endif /* sun */ | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
3637 /* @@@end-snarf@@@ */ |
| 428 | 3638 0 |
| 3639 }; | |
| 3640 #endif /* not AIX */ | |
| 3641 #endif /* USG */ | |
| 3642 | |
| 2762 | 3643 #endif /* (!defined(HAVE_DECL_SYS_SIGLIST) || !HAVE_DECL_SYS_SIGLIST ) && !defined (HAVE_SYS_SIGLIST) */ |
| 428 | 3644 |
| 3645 | |
| 3646 /************************************************************************/ | |
| 3647 /* Directory routines for systems that don't have them */ | |
| 3648 /************************************************************************/ | |
| 3649 | |
| 3650 #ifdef SYSV_SYSTEM_DIR | |
| 3651 | |
| 3652 #include <dirent.h> | |
| 3653 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3654 #if !defined(HAVE_CLOSEDIR) |
| 428 | 3655 int |
| 3656 closedir (DIR *dirp) /* stream from opendir */ | |
| 3657 { | |
| 3658 int rtnval; | |
| 3659 | |
| 771 | 3660 rtnval = retry_close (dirp->dd_fd); |
| 428 | 3661 |
| 3662 /* Some systems (like Solaris) allocate the buffer and the DIR all | |
| 3663 in one block. Why in the world are we freeing this ourselves | |
| 3664 anyway? */ | |
| 3665 #if ! (defined (sun) && defined (USG5_4)) | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3666 xfree (dirp->dd_buf); /* directory block defined in <dirent.h> */ |
| 428 | 3667 #endif |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3668 xfree (dirp); |
| 428 | 3669 return (rtnval); |
| 3670 } | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3700
diff
changeset
|
3671 #endif /* not HAVE_CLOSEDIR */ |
| 428 | 3672 #endif /* SYSV_SYSTEM_DIR */ |
| 3673 | |
| 3674 #ifdef NONSYSTEM_DIR_LIBRARY | |
| 3675 | |
| 3676 DIR * | |
| 442 | 3677 opendir (const char *filename) /* name of directory */ |
| 428 | 3678 { |
| 3679 DIR *dirp; /* -> malloc'ed storage */ | |
| 3680 int fd; /* file descriptor for read */ | |
| 3681 struct stat sbuf; /* result of fstat */ | |
| 3682 | |
| 771 | 3683 fd = open (filename, O_RDONLY); |
| 428 | 3684 if (fd < 0) |
| 3685 return 0; | |
| 3686 | |
| 3687 if (fstat (fd, &sbuf) < 0 | |
| 3688 || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
| 3689 || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
| 3690 { | |
| 771 | 3691 retry_close (fd); |
| 428 | 3692 return 0; /* bad luck today */ |
| 3693 } | |
| 3694 | |
| 3695 dirp->dd_fd = fd; | |
| 3696 dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
| 3697 | |
| 3698 return dirp; | |
| 3699 } | |
| 3700 | |
| 3701 void | |
| 3702 closedir (DIR *dirp) /* stream from opendir */ | |
| 3703 { | |
| 771 | 3704 retry_close (dirp->dd_fd); |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3705 xfree (dirp); |
| 428 | 3706 } |
| 3707 | |
| 3708 | |
| 3709 #define DIRSIZ 14 | |
| 3710 struct olddir | |
| 3711 { | |
| 3712 ino_t od_ino; /* inode */ | |
| 3713 char od_name[DIRSIZ]; /* filename */ | |
| 3714 }; | |
| 3715 | |
| 3716 static struct direct dir_static; /* simulated directory contents */ | |
| 3717 | |
| 3718 /* ARGUSED */ | |
| 3719 struct direct * | |
| 3720 readdir (DIR *dirp) /* stream from opendir */ | |
| 3721 { | |
| 3722 struct olddir *dp; /* -> directory data */ | |
| 3723 | |
| 3724 for (; ;) | |
| 3725 { | |
| 3726 if (dirp->dd_loc >= dirp->dd_size) | |
| 3727 dirp->dd_loc = dirp->dd_size = 0; | |
| 3728 | |
| 3729 if (dirp->dd_size == 0 /* refill buffer */ | |
| 771 | 3730 && (dirp->dd_size = |
| 3731 retry_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
| 428 | 3732 return 0; |
| 3733 | |
| 3734 dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
| 3735 dirp->dd_loc += sizeof (struct olddir); | |
| 3736 | |
| 3737 if (dp->od_ino != 0) /* not deleted entry */ | |
| 3738 { | |
| 3739 dir_static.d_ino = dp->od_ino; | |
| 3740 strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
| 3741 dir_static.d_name[DIRSIZ] = '\0'; | |
| 3742 dir_static.d_namlen = strlen (dir_static.d_name); | |
| 3743 dir_static.d_reclen = sizeof (struct direct) | |
| 3744 - MAXNAMLEN + 3 | |
| 3745 + dir_static.d_namlen - dir_static.d_namlen % 4; | |
| 3746 return &dir_static; /* -> simulated structure */ | |
| 3747 } | |
| 3748 } | |
| 3749 } | |
| 3750 | |
| 3751 | |
| 3752 #endif /* NONSYSTEM_DIR_LIBRARY */ | |
| 3753 | |
| 3754 | |
| 3755 /* mkdir and rmdir functions, for systems which don't have them. */ | |
| 3756 | |
| 3757 #ifndef HAVE_MKDIR | |
| 3758 /* | |
| 3759 * Written by Robert Rother, Mariah Corporation, August 1985. | |
| 3760 * | |
| 3761 * If you want it, it's yours. All I ask in return is that if you | |
| 3762 * figure out how to do this in a Bourne Shell script you send me | |
| 3763 * a copy. | |
| 3764 * sdcsvax!rmr or rmr@uscd | |
| 3765 * | |
| 3766 * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
| 3767 * subroutine. 11Mar86; hoptoad!gnu | |
| 3768 * | |
| 3769 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
| 3770 * subroutine didn't return EEXIST. It does now. | |
| 3771 */ | |
| 3772 | |
| 3773 /* | |
| 3774 * Make a directory. | |
| 3775 */ | |
| 3776 #ifdef MKDIR_PROTOTYPE | |
| 3777 MKDIR_PROTOTYPE | |
| 3778 #else | |
| 3779 int | |
| 442 | 3780 mkdir (const char *dpath, int dmode) |
| 428 | 3781 #endif |
| 3782 { | |
| 3783 int cpid, status, fd; | |
| 3784 struct stat statbuf; | |
| 3785 | |
| 442 | 3786 if (stat (dpath, &statbuf) == 0) /* we do want stat() here */ |
| 428 | 3787 { |
| 3788 errno = EEXIST; /* Stat worked, so it already exists */ | |
| 3789 return -1; | |
| 3790 } | |
| 3791 | |
| 3792 /* If stat fails for a reason other than non-existence, return error */ | |
| 3793 if (errno != ENOENT) | |
| 3794 return -1; | |
| 3795 | |
| 3796 synch_process_alive = 1; | |
| 3797 switch (cpid = fork ()) | |
| 3798 { | |
| 3799 | |
| 3800 case -1: /* Error in fork() */ | |
| 3801 return -1; /* Errno is set already */ | |
| 3802 | |
| 3803 case 0: /* Child process */ | |
| 3804 { | |
| 3805 /* | |
| 3806 * Cheap hack to set mode of new directory. Since this | |
| 3807 * child process is going away anyway, we zap its umask. | |
| 3808 * ####, this won't suffice to set SUID, SGID, etc. on this | |
| 3809 * directory. Does anybody care? | |
| 3810 */ | |
| 3811 status = umask (0); /* Get current umask */ | |
| 3812 status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
| 771 | 3813 fd = open ("/dev/null", O_RDWR); |
| 428 | 3814 if (fd >= 0) |
| 3815 { | |
| 3816 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3817 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3818 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3819 } | |
| 3820 execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); | |
| 3821 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3822 } | |
| 3823 | |
| 3824 default: /* Parent process */ | |
| 3825 wait_for_termination (cpid); | |
| 3826 } | |
| 3827 | |
| 3828 if (synch_process_death != 0 || synch_process_retcode != 0) | |
| 3829 { | |
| 3830 errno = EIO; /* We don't know why, but */ | |
| 3831 return -1; /* /bin/mkdir failed */ | |
| 3832 } | |
| 3833 | |
| 3834 return 0; | |
| 3835 } | |
| 3836 #endif /* not HAVE_MKDIR */ | |
| 3837 | |
| 3838 #ifndef HAVE_RMDIR | |
| 3839 int | |
| 442 | 3840 rmdir (const char *dpath) |
| 428 | 3841 { |
| 3842 int cpid, status, fd; | |
| 3843 struct stat statbuf; | |
| 3844 | |
| 442 | 3845 if (stat (dpath, &statbuf) != 0) /* we do want stat() here */ |
| 428 | 3846 { |
| 3847 /* Stat just set errno. We don't have to */ | |
| 3848 return -1; | |
| 3849 } | |
| 3850 | |
| 3851 synch_process_alive = 1; | |
| 3852 switch (cpid = fork ()) | |
| 3853 { | |
| 3854 | |
| 3855 case -1: /* Error in fork() */ | |
| 3856 return (-1); /* Errno is set already */ | |
| 3857 | |
| 3858 case 0: /* Child process */ | |
| 771 | 3859 fd = open ("/dev/null", O_RDWR); |
| 428 | 3860 if (fd >= 0) |
| 3861 { | |
| 3862 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO); | |
| 3863 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO); | |
| 3864 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO); | |
| 3865 } | |
| 3866 execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); | |
| 3867 _exit (-1); /* Can't exec /bin/mkdir */ | |
| 3868 | |
| 3869 default: /* Parent process */ | |
| 3870 wait_for_termination (cpid); | |
| 3871 } | |
| 3872 | |
| 3873 if (synch_process_death != 0 || | |
| 3874 synch_process_retcode != 0) | |
| 3875 { | |
| 3876 errno = EIO; /* We don't know why, but */ | |
| 3877 return -1; /* /bin/rmdir failed */ | |
| 3878 } | |
| 3879 | |
| 3880 return 0; | |
| 3881 } | |
| 3882 #endif /* !HAVE_RMDIR */ | |
| 3883 | |
| 3884 | |
| 3885 /************************************************************************/ | |
| 3886 /* Misc. SunOS crap */ | |
| 3887 /************************************************************************/ | |
| 3888 | |
| 3889 #ifdef USE_DL_STUBS | |
| 3890 | |
| 3891 /* These are included on Sunos 4.1 when we do not use shared libraries. | |
| 3892 X11 libraries may refer to these functions but (we hope) do not | |
| 3893 actually call them. */ | |
| 3894 | |
| 3895 void * | |
| 3896 dlopen (void) | |
| 3897 { | |
| 3898 return 0; | |
| 3899 } | |
| 3900 | |
| 3901 void * | |
| 3902 dlsym (void) | |
| 3903 { | |
| 3904 return 0; | |
| 3905 } | |
| 3906 | |
| 3907 int | |
| 3908 dlclose (void) | |
| 3909 { | |
| 3910 return -1; | |
| 3911 } | |
| 3912 | |
| 3913 #endif /* USE_DL_STUBS */ |