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428
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1 /* Interfaces to system-dependent kernel and library entries.
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2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Tinker Systems.
|
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2367
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4 Copyright (C) 2000, 2001, 2002, 2003, 2004 Ben Wing.
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428
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5
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|
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6 This file is part of XEmacs.
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|
7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
|
|
|
10 Free Software Foundation; either version 2, or (at your option) any
|
|
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11 later version.
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12
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|
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
16 for more details.
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|
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17
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18 You should have received a copy of the GNU General Public License
|
|
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19 along with XEmacs; see the file COPYING. If not, write to
|
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|
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
|
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771
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23
|
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428
|
24 /* Synched up with: FSF 19.30 except for some Windows-NT crap. */
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25
|
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771
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26 /* Authorship:
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27
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28 Current primary author: Various
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29
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30 Originally from FSF. Major changes at various times.
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31 Substantially cleaned up by Ben Wing, Dec. 1994 / Jan. 1995.
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32 SIGIO stuff ripped apart and redone by Ben Wing. (during 19.14 devel?)
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33 Signal stuff totally redone by Ben Wing. (during 19.14 devel? that would
|
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34 be Dec 1995 - Apr 1996.)
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35 Controlling terminal stuff redone by Ben Wing for 19.13.
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|
36 System call encapsulation stuff written by Ben Wing for 19.12. (1995)
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37 Ripped up and redone avoiding preprocessor tricks Aug - Sep 2001 during
|
|
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38 Mule-on-Windows development.
|
|
|
39 */
|
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428
|
40
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|
|
41 #include <config.h>
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|
|
42 #include "lisp.h"
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|
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43
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|
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44 /* ------------------------------- */
|
|
|
45 /* basic includes */
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|
|
46 /* ------------------------------- */
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|
|
47
|
|
800
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48
|
|
|
49 #include "buffer.h"
|
|
872
|
50 #include "device-impl.h"
|
|
800
|
51 #include "events.h"
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|
|
52 #include "frame.h"
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|
|
53 #include "process.h"
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|
|
54 #include "redisplay.h"
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|
|
55 #include "sysdep.h"
|
|
|
56 #include "window.h"
|
|
|
57
|
|
428
|
58 #ifdef HAVE_TTY
|
|
872
|
59 #include "console-tty-impl.h"
|
|
428
|
60 #else
|
|
|
61 #endif /* HAVE_TTY */
|
|
|
62
|
|
872
|
63 #include "console-stream-impl.h"
|
|
442
|
64 #ifdef WIN32_NATIVE
|
|
771
|
65 #include "syswindows.h"
|
|
428
|
66 #endif
|
|
|
67
|
|
800
|
68 #include "sysdir.h"
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|
|
69 #include "sysfile.h"
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|
|
70 #include "sysproc.h"
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|
|
71 #include "syspwd.h"
|
|
859
|
72 #include "syssignal.h"
|
|
800
|
73 #include "systime.h"
|
|
|
74 #include "systty.h"
|
|
|
75 #include "syswait.h"
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|
|
76
|
|
|
77 #include <setjmp.h>
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|
|
78
|
|
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79
|
|
428
|
80 /* ------------------------------- */
|
|
|
81 /* TTY definitions */
|
|
|
82 /* ------------------------------- */
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83
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|
|
84 #ifdef USG
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|
|
85 #include <sys/utsname.h>
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|
86 #if defined (TIOCGWINSZ) || defined (ISC4_0)
|
|
|
87 #ifdef NEED_SIOCTL
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|
|
88 #include <sys/sioctl.h>
|
|
|
89 #endif
|
|
|
90 #ifdef NEED_PTEM_H
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|
91 #include <sys/stream.h>
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|
|
92 #include <sys/ptem.h>
|
|
|
93 #endif
|
|
|
94 #endif /* TIOCGWINSZ or ISC4_0 */
|
|
|
95 #endif /* USG */
|
|
|
96
|
|
|
97 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
|
|
|
98 #ifndef LPASS8
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|
|
99 #define LPASS8 0
|
|
|
100 #endif
|
|
|
101
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|
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102 #ifndef HAVE_H_ERRNO
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|
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103 int h_errno;
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|
|
104 #endif
|
|
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105
|
|
|
106 #ifdef HAVE_TTY
|
|
|
107
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|
|
108 static int baud_convert[] =
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|
|
109 #ifdef BAUD_CONVERT
|
|
|
110 BAUD_CONVERT;
|
|
|
111 #else
|
|
|
112 {
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|
|
113 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
|
|
|
114 1800, 2400, 4800, 9600, 19200, 38400
|
|
|
115 };
|
|
|
116 #endif
|
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|
117
|
|
|
118 #endif
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|
119
|
|
|
120 #ifdef AIXHFT
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|
|
121 static void hft_init (struct console *c);
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|
122 static void hft_reset (struct console *c);
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|
123 #include <sys/termio.h>
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|
|
124 #endif
|
|
|
125
|
|
2340
|
126 #ifdef HAVE_TTY
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|
|
127 #define USED_IF_TTY(decl) decl
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|
|
128 #else
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|
|
129 #define USED_IF_TTY(decl) UNUSED (decl)
|
|
|
130 #endif
|
|
|
131
|
|
428
|
132
|
|
|
133 /************************************************************************/
|
|
|
134 /* subprocess control */
|
|
|
135 /************************************************************************/
|
|
|
136
|
|
853
|
137 #ifdef NEED_SYNC_PROCESS_CODE
|
|
|
138
|
|
|
139 /* True iff we are about to fork off a synchronous process or if we
|
|
|
140 are waiting for it. */
|
|
|
141 volatile int synch_process_alive;
|
|
|
142
|
|
|
143 /* Nonzero => this is a string explaining death of synchronous subprocess. */
|
|
|
144 const char *synch_process_death;
|
|
|
145
|
|
|
146 /* If synch_process_death is zero,
|
|
|
147 this is exit code of synchronous subprocess. */
|
|
|
148 int synch_process_retcode;
|
|
|
149
|
|
|
150 #endif /* NEED_SYNC_PROCESS_CODE */
|
|
|
151
|
|
428
|
152 #ifdef HAVE_TTY
|
|
|
153
|
|
|
154 #ifdef SIGTSTP
|
|
|
155
|
|
|
156 /* Arrange for character C to be read as the next input from
|
|
|
157 the terminal. */
|
|
|
158 void
|
|
2311
|
159 stuff_char (struct console *con,
|
|
|
160 #ifdef TIOCSTI
|
|
|
161 int c
|
|
|
162 #else
|
|
|
163 int UNUSED (c)
|
|
|
164 #endif
|
|
|
165 )
|
|
428
|
166 {
|
|
|
167 int input_fd;
|
|
|
168
|
|
|
169 assert (CONSOLE_TTY_P (con));
|
|
|
170 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
|
171 /* Should perhaps error if in batch mode */
|
|
|
172 #ifdef TIOCSTI
|
|
|
173 ioctl (input_fd, TIOCSTI, &c);
|
|
|
174 #else /* no TIOCSTI */
|
|
563
|
175 invalid_operation ("Cannot stuff terminal input characters in this version of Unix.", Qunbound);
|
|
428
|
176 #endif /* no TIOCSTI */
|
|
|
177 }
|
|
|
178
|
|
|
179 #endif /* SIGTSTP */
|
|
|
180
|
|
|
181 #endif /* HAVE_TTY */
|
|
|
182
|
|
|
183 void
|
|
2311
|
184 set_exclusive_use (
|
|
|
185 #ifdef FIOCLEX
|
|
|
186 int fd
|
|
|
187 #else
|
|
|
188 int UNUSED (fd)
|
|
|
189 #endif
|
|
|
190 )
|
|
428
|
191 {
|
|
|
192 #ifdef FIOCLEX
|
|
|
193 ioctl (fd, FIOCLEX, 0);
|
|
|
194 #endif
|
|
|
195 /* Ok to do nothing if this feature does not exist */
|
|
|
196 }
|
|
|
197
|
|
|
198 void
|
|
2340
|
199 set_descriptor_non_blocking (
|
|
|
200 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX) || defined (F_SETFL)
|
|
|
201 int fd
|
|
|
202 #else
|
|
|
203 int UNUSED (fd)
|
|
|
204 #endif
|
|
|
205 )
|
|
428
|
206 {
|
|
|
207 /* Stride people say it's a mystery why this is needed
|
|
|
208 as well as the O_NDELAY, but that it fails without this. */
|
|
|
209 /* For AIX: Apparently need this for non-blocking reads on sockets.
|
|
|
210 It seems that O_NONBLOCK applies only to FIFOs? From
|
|
|
211 lowry@watson.ibm.com (Andy Lowry). */
|
|
|
212 /* #### Should this be conditionalized on FIONBIO? */
|
|
872
|
213 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX)
|
|
428
|
214 {
|
|
|
215 int one = 1;
|
|
|
216 ioctl (fd, FIONBIO, &one);
|
|
|
217 }
|
|
|
218 #endif
|
|
|
219
|
|
|
220 #ifdef F_SETFL
|
|
|
221 fcntl (fd, F_SETFL, O_NONBLOCK);
|
|
|
222 #endif
|
|
|
223 }
|
|
|
224
|
|
853
|
225 #ifdef NEED_SYNC_PROCESS_CODE /* #### Used only on super-ancient systems */
|
|
|
226
|
|
|
227 static void
|
|
814
|
228 wait_for_termination (int pid)
|
|
428
|
229 {
|
|
|
230 /* #### With the new improved SIGCHLD handling stuff, there is much
|
|
|
231 less danger of race conditions and some of the comments below
|
|
|
232 don't apply. This should be updated. */
|
|
|
233
|
|
|
234 #if defined (NO_SUBPROCESSES)
|
|
|
235 while (1)
|
|
|
236 {
|
|
|
237 /* No need to be tricky like below; we can just call wait(). */
|
|
|
238 /* #### should figure out how to write a wait_allowing_quit().
|
|
|
239 Since hardly any systems don't have subprocess support,
|
|
|
240 however, there doesn't seem to be much point. */
|
|
|
241 if (wait (0) == pid)
|
|
|
242 return;
|
|
|
243 }
|
|
|
244 #elif defined (HAVE_WAITPID)
|
|
|
245 /* Note that, whenever any subprocess terminates (asynch. or synch.),
|
|
|
246 the SIGCHLD handler will be called and it will call wait(). Thus
|
|
|
247 we cannot just call wait() ourselves, and we can't block SIGCHLD
|
|
|
248 and then call wait(), because then if an asynch. process dies
|
|
|
249 while we're waiting for our synch. process, Emacs will never
|
|
|
250 notice that the asynch. process died.
|
|
|
251
|
|
|
252 So, the general approach we take is to repeatedly block until a
|
|
|
253 signal arrives, and then check if our process died using kill
|
|
|
254 (pid, 0). (We could also check the value of `synch_process_alive',
|
|
|
255 since the SIGCHLD handler will reset that and we know that we're
|
|
|
256 only being called on synchronous processes, but this approach is
|
|
|
257 safer. I don't trust the proper delivery of SIGCHLD.
|
|
|
258
|
|
|
259 Note also that we cannot use any form of waitpid(). A loop with
|
|
|
260 WNOHANG will chew up CPU time; better to use sleep(). A loop
|
|
|
261 without WNOWAIT will screw up the SIGCHLD handler (actually this
|
|
|
262 is not true, if you duplicate the exit-status-reaping code; see
|
|
|
263 below). A loop with WNOWAIT will result in a race condition if
|
|
|
264 the process terminates between the process-status check and the
|
|
|
265 call to waitpid(). */
|
|
|
266
|
|
|
267 /* Formerly, immediate_quit was set around this function call, but
|
|
|
268 that could lead to problems if the QUIT happened when SIGCHLD was
|
|
|
269 blocked -- it would remain blocked. Yet another reason why
|
|
|
270 immediate_quit is a bad idea. In any case, there is no reason to
|
|
|
271 resort to this because either the SIGIO or the SIGALRM will stop
|
|
|
272 the block in EMACS_WAIT_FOR_SIGNAL(). */
|
|
|
273
|
|
|
274 /* Apparently there are bugs on some systems with the second method
|
|
|
275 used below (the EMACS_BLOCK_SIGNAL method), whereby zombie
|
|
|
276 processes get left around. It appears in those cases that the
|
|
|
277 SIGCHLD handler is never getting invoked. It's not clear whether
|
|
|
278 this is an Emacs bug or a kernel bug or both: on HPUX this
|
|
|
279 problem is observed only with XEmacs, but under Solaris 2.4 all
|
|
|
280 sorts of different programs have problems with zombies. The
|
|
|
281 method we use here does not require a working SIGCHLD (but will
|
|
|
282 not break if it is working), and should be safe. */
|
|
|
283 /*
|
|
|
284 We use waitpid(), contrary to the remarks above. There is no
|
|
|
285 race condition, because the three situations when sigchld_handler
|
|
|
286 is invoked should be handled OK:
|
|
|
287
|
|
|
288 - handler invoked before waitpid(): In this case, subprocess
|
|
|
289 status will be set by sigchld_handler. waitpid() here will
|
|
|
290 return -1 with errno set to ECHILD, which is a valid exit
|
|
|
291 condition.
|
|
|
292
|
|
|
293 - handler invoked during waitpid(): as above, except that errno
|
|
|
294 here will be set to EINTR. This will cause waitpid() to be
|
|
|
295 called again, and this time it will exit with ECHILD.
|
|
|
296
|
|
|
297 - handler invoked after waitpid(): The following code will reap
|
|
|
298 the subprocess. In the handler, wait() will return -1 because
|
|
|
299 there is no child to reap, and the handler will exit without
|
|
|
300 modifying child subprocess status. */
|
|
|
301 int ret, status;
|
|
|
302
|
|
|
303 /* Because the SIGCHLD handler can potentially reap the synchronous
|
|
|
304 subprocess, we should take care of that. */
|
|
|
305
|
|
|
306 /* Will stay in the do loop as long as:
|
|
|
307 1. Process is alive
|
|
|
308 2. Ctrl-G is not pressed */
|
|
|
309 do
|
|
|
310 {
|
|
|
311 QUIT;
|
|
|
312 ret = waitpid (pid, &status, 0);
|
|
|
313 /* waitpid returns 0 if the process is still alive. */
|
|
|
314 }
|
|
|
315 while (ret == 0 || (ret == -1 && errno == EINTR));
|
|
|
316
|
|
|
317 if (ret == pid) /* Success */
|
|
|
318 /* Set synch process globals. This is can also happen
|
|
|
319 in sigchld_handler, and that code is duplicated. */
|
|
|
320 {
|
|
|
321 synch_process_alive = 0;
|
|
|
322 if (WIFEXITED (status))
|
|
|
323 synch_process_retcode = WEXITSTATUS (status);
|
|
|
324 else if (WIFSIGNALED (status))
|
|
|
325 synch_process_death = signal_name (WTERMSIG (status));
|
|
|
326 }
|
|
|
327 /* On exiting the loop, ret will be -1, with errno set to ECHILD if
|
|
|
328 the child has already been reaped, e.g. in the signal handler. */
|
|
|
329
|
|
|
330 /* Otherwise, we've had some error condition here.
|
|
|
331 Per POSIX, the only other possibilities are:
|
|
|
332 - EFAULT (bus error accessing arg 2) or
|
|
|
333 - EINVAL (incorrect arguments),
|
|
|
334 which are both program bugs.
|
|
|
335
|
|
|
336 Since implementations may add their own error indicators on top,
|
|
|
337 we ignore it by default. */
|
|
|
338 #elif defined (EMACS_BLOCK_SIGNAL) && !defined (BROKEN_WAIT_FOR_SIGNAL) && defined (SIGCHLD)
|
|
|
339 while (1)
|
|
|
340 {
|
|
|
341 static int wait_debugging = 0; /* Set nonzero to make following
|
|
|
342 function work under dbx (at least for bsd). */
|
|
|
343 QUIT;
|
|
|
344 if (wait_debugging)
|
|
|
345 return;
|
|
|
346
|
|
|
347 EMACS_BLOCK_SIGNAL (SIGCHLD);
|
|
|
348 /* Block SIGCHLD from happening during this check,
|
|
|
349 to avoid race conditions. */
|
|
|
350 if (kill (pid, 0) < 0)
|
|
|
351 {
|
|
|
352 EMACS_UNBLOCK_SIGNAL (SIGCHLD);
|
|
|
353 return;
|
|
|
354 }
|
|
|
355 else
|
|
|
356 /* WARNING: Whatever this macro does *must* not allow SIGCHLD
|
|
|
357 to happen between the time that it's reenabled and when we
|
|
|
358 begin to block. Otherwise we may end up blocking for a
|
|
|
359 signal that has already arrived and isn't coming again.
|
|
|
360 Can you say "race condition"?
|
|
|
361
|
|
|
362 I assume that the system calls sigpause() or sigsuspend()
|
|
|
363 to provide this atomicness. If you're getting hangs in
|
|
|
364 sigpause()/sigsuspend(), then your OS doesn't implement
|
|
|
365 this properly (this applies under hpux9, for example).
|
|
|
366 Try defining BROKEN_WAIT_FOR_SIGNAL. */
|
|
|
367 EMACS_WAIT_FOR_SIGNAL (SIGCHLD);
|
|
|
368 }
|
|
853
|
369 #else /* not HAVE_WAITPID and (not EMACS_BLOCK_SIGNAL or BROKEN_WAIT_FOR_SIGNAL) */
|
|
428
|
370 /* This approach is kind of cheesy but is guaranteed(?!) to work
|
|
|
371 for all systems. */
|
|
|
372 while (1)
|
|
|
373 {
|
|
|
374 QUIT;
|
|
|
375 if (kill (pid, 0) < 0)
|
|
|
376 return;
|
|
771
|
377 stop_interrupts ();
|
|
|
378 sleep (1);
|
|
|
379 start_interrupts ();
|
|
428
|
380 }
|
|
|
381 #endif /* OS features */
|
|
|
382 }
|
|
|
383
|
|
853
|
384 #endif /* NEED_SYNC_PROCESS_CODE */
|
|
428
|
385
|
|
|
386 #if !defined (NO_SUBPROCESSES)
|
|
|
387
|
|
|
388 /*
|
|
|
389 * flush any pending output
|
|
|
390 * (may flush input as well; it does not matter the way we use it)
|
|
|
391 */
|
|
|
392
|
|
|
393 void
|
|
2286
|
394 flush_pending_output (
|
|
|
395 #if !defined (HAVE_TERMIOS) && (defined (TCFLSH) || defined (TIOCFLUSH))
|
|
|
396 int channel
|
|
|
397 #else
|
|
|
398 int UNUSED (channel)
|
|
|
399 #endif
|
|
|
400 )
|
|
428
|
401 {
|
|
|
402 #ifdef HAVE_TERMIOS
|
|
|
403 /* If we try this, we get hit with SIGTTIN, because
|
|
|
404 the child's tty belongs to the child's pgrp. */
|
|
|
405 #elif defined (TCFLSH)
|
|
|
406 ioctl (channel, TCFLSH, 1);
|
|
|
407 #elif defined (TIOCFLUSH)
|
|
|
408 int zero = 0;
|
|
|
409 /* 3rd arg should be ignored
|
|
|
410 but some 4.2 kernels actually want the address of an int
|
|
|
411 and nonzero means something different. */
|
|
|
412 ioctl (channel, TIOCFLUSH, &zero);
|
|
|
413 #endif
|
|
|
414 }
|
|
|
415
|
|
442
|
416 #ifndef WIN32_NATIVE
|
|
428
|
417 /* Set up the terminal at the other end of a pseudo-terminal that
|
|
|
418 we will be controlling an inferior through.
|
|
|
419 It should not echo or do line-editing, since that is done
|
|
|
420 in Emacs. No padding needed for insertion into an Emacs buffer. */
|
|
|
421
|
|
|
422 void
|
|
|
423 child_setup_tty (int out)
|
|
|
424 {
|
|
|
425 struct emacs_tty s;
|
|
430
|
426 emacs_get_tty (out, &s);
|
|
428
|
427
|
|
|
428 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
|
|
|
429 assert (isatty(out));
|
|
|
430 s.main.c_oflag |= OPOST; /* Enable output postprocessing */
|
|
|
431 s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */
|
|
513
|
432
|
|
|
433 {
|
|
|
434 /* Disable all output delays. */
|
|
|
435 tcflag_t delay_mask = 0;
|
|
428
|
436 #ifdef NLDLY
|
|
513
|
437 delay_mask |= NLDLY;
|
|
|
438 #endif
|
|
|
439 #ifdef CRDLY
|
|
|
440 delay_mask |= CRDLY;
|
|
|
441 #endif
|
|
|
442 #ifdef TABDLY
|
|
|
443 delay_mask |= TABDLY; /* Also disables tab expansion (Posix). */
|
|
|
444 #endif
|
|
|
445 #ifdef BSDLY
|
|
|
446 delay_mask |= BSDLY;
|
|
|
447 #endif
|
|
|
448 #ifdef VTDLY
|
|
|
449 delay_mask |= VTDLY;
|
|
428
|
450 #endif
|
|
513
|
451 #ifdef FFDLY
|
|
|
452 delay_mask |= FFDLY;
|
|
|
453 #endif
|
|
|
454 s.main.c_oflag &= ~delay_mask;
|
|
|
455 }
|
|
|
456
|
|
|
457 #ifdef OXTABS
|
|
|
458 /* Posix defines the TAB3 value for TABDLY to mean: expand tabs to spaces.
|
|
|
459 On those systems tab expansion would be disabled by the above code.
|
|
|
460 BSD systems use an independent flag, OXTABS. */
|
|
|
461 s.main.c_oflag &= ~OXTABS; /* Disable tab expansion */
|
|
|
462 #endif
|
|
|
463
|
|
428
|
464 s.main.c_lflag &= ~ECHO; /* Disable echo */
|
|
|
465 s.main.c_lflag |= ISIG; /* Enable signals */
|
|
|
466 #ifdef IUCLC
|
|
|
467 s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */
|
|
|
468 #endif
|
|
|
469 #ifdef OLCUC
|
|
|
470 s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */
|
|
|
471 #endif
|
|
513
|
472
|
|
428
|
473 #if defined (CSIZE) && defined (CS8)
|
|
|
474 s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */
|
|
|
475 #endif
|
|
|
476 #ifdef ISTRIP
|
|
|
477 s.main.c_iflag &= ~ISTRIP; /* Don't strip 8th bit on input */
|
|
|
478 #endif
|
|
|
479 #if 0
|
|
|
480 /* Unnecessary as long as ICANON is set */
|
|
|
481 s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */
|
|
|
482 s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */
|
|
|
483 #endif /* 0 */
|
|
|
484
|
|
|
485 s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */
|
|
|
486 s.main.c_cc[VEOF] = 04; /* ensure that EOF is Control-D */
|
|
|
487 s.main.c_cc[VERASE] = _POSIX_VDISABLE; /* disable erase processing */
|
|
|
488 s.main.c_cc[VKILL] = _POSIX_VDISABLE; /* disable kill processing */
|
|
|
489
|
|
|
490 #ifdef HPUX
|
|
|
491 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
|
|
|
492 #endif /* HPUX */
|
|
|
493
|
|
|
494 #ifdef AIX
|
|
|
495 #ifndef IBMR2AIX
|
|
|
496 /* AIX enhanced edit loses NULs, so disable it. */
|
|
|
497 s.main.c_line = 0;
|
|
|
498 s.main.c_iflag &= ~ASCEDIT;
|
|
|
499 #endif /* IBMR2AIX */
|
|
|
500 /* Also, PTY overloads NUL and BREAK.
|
|
|
501 don't ignore break, but don't signal either, so it looks like NUL.
|
|
|
502 This really serves a purpose only if running in an XTERM window
|
|
|
503 or via TELNET or the like, but does no harm elsewhere. */
|
|
|
504 s.main.c_iflag &= ~IGNBRK;
|
|
|
505 s.main.c_iflag &= ~BRKINT;
|
|
|
506 #endif /* AIX */
|
|
|
507 #ifdef SIGNALS_VIA_CHARACTERS
|
|
|
508 /* TTY `special characters' are used in process_send_signal
|
|
|
509 so set them here to something useful. */
|
|
|
510 s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */
|
|
|
511 s.main.c_cc[VINTR] = 'C' &037; /* Control-C */
|
|
|
512 s.main.c_cc[VSUSP] = 'Z' &037; /* Control-Z */
|
|
|
513 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
|
|
|
514 /* TTY `special characters' work better as signals, so disable
|
|
|
515 character forms */
|
|
|
516 s.main.c_cc[VQUIT] = _POSIX_VDISABLE;
|
|
|
517 s.main.c_cc[VINTR] = _POSIX_VDISABLE;
|
|
|
518 s.main.c_cc[VSUSP] = _POSIX_VDISABLE;
|
|
|
519 s.main.c_lflag &= ~ISIG;
|
|
|
520 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
|
|
|
521 s.main.c_cc[VEOL] = _POSIX_VDISABLE;
|
|
|
522 #if defined (CBAUD)
|
|
440
|
523 /* <mdiers> #### This is not portable. ###
|
|
428
|
524 POSIX does not specify CBAUD, and 4.4BSD does not have it.
|
|
|
525 Instead, POSIX suggests to use cfset{i,o}speed().
|
|
|
526 [cf. D. Lewine, POSIX Programmer's Guide, Chapter 8: Terminal
|
|
|
527 I/O, O'Reilly 1991] */
|
|
|
528 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
|
|
|
529 #else
|
|
|
530 /* <mdiers> What to do upon failure? Just ignoring rc is probably
|
|
|
531 not acceptable, is it? */
|
|
|
532 if (cfsetispeed (&s.main, B9600) == -1) /* ignore */;
|
|
|
533 if (cfsetospeed (&s.main, B9600) == -1) /* ignore */;
|
|
|
534 #endif /* defined (CBAUD) */
|
|
|
535
|
|
|
536 #else /* not HAVE_TERMIO */
|
|
|
537
|
|
|
538 s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE
|
|
|
539 | CBREAK | TANDEM);
|
|
|
540 s.main.sg_flags |= LPASS8;
|
|
|
541 s.main.sg_erase = 0377;
|
|
|
542 s.main.sg_kill = 0377;
|
|
|
543 s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */
|
|
|
544
|
|
|
545 #endif /* not HAVE_TERMIO */
|
|
430
|
546 emacs_set_tty (out, &s, 0);
|
|
428
|
547
|
|
|
548 #ifdef RTU
|
|
|
549 {
|
|
|
550 int zero = 0;
|
|
|
551 ioctl (out, FIOASYNC, &zero);
|
|
|
552 }
|
|
|
553 #endif /* RTU */
|
|
|
554 }
|
|
442
|
555 #endif /* WIN32_NATIVE */
|
|
428
|
556
|
|
|
557 #endif /* not NO_SUBPROCESSES */
|
|
|
558
|
|
|
559
|
|
|
560 #if !defined (SIGTSTP) && !defined (USG_JOBCTRL)
|
|
|
561
|
|
|
562 #define SIG_PARAM_TYPE int
|
|
|
563
|
|
|
564 /* Record a signal code and the handler for it. */
|
|
|
565 struct save_signal
|
|
|
566 {
|
|
|
567 int code;
|
|
872
|
568 RETSIGTYPE (XCDECL * handler) (SIG_PARAM_TYPE);
|
|
428
|
569 };
|
|
|
570
|
|
|
571 static void
|
|
|
572 save_signal_handlers (struct save_signal *saved_handlers)
|
|
|
573 {
|
|
|
574 while (saved_handlers->code)
|
|
|
575 {
|
|
|
576 saved_handlers->handler
|
|
872
|
577 = (RETSIGTYPE (XCDECL *) (SIG_PARAM_TYPE)) EMACS_SIGNAL (saved_handlers->code, SIG_IGN);
|
|
428
|
578 saved_handlers++;
|
|
|
579 }
|
|
|
580 }
|
|
|
581
|
|
|
582 static void
|
|
|
583 restore_signal_handlers (struct save_signal *saved_handlers)
|
|
|
584 {
|
|
|
585 while (saved_handlers->code)
|
|
|
586 {
|
|
613
|
587 EMACS_SIGNAL (saved_handlers->code, saved_handlers->handler);
|
|
428
|
588 saved_handlers++;
|
|
|
589 }
|
|
|
590 }
|
|
|
591
|
|
|
592
|
|
|
593 /* Fork a subshell. */
|
|
|
594 static void
|
|
|
595 sys_subshell (void)
|
|
|
596 {
|
|
|
597 Lisp_Object dir;
|
|
867
|
598 Ibyte *str = 0;
|
|
771
|
599 Bytecount len;
|
|
428
|
600 struct gcpro gcpro1;
|
|
867
|
601 Ibyte *sh = 0;
|
|
771
|
602 Extbyte *shext;
|
|
|
603
|
|
|
604 /* Use our buffer's default directory for the subshell. */
|
|
|
605
|
|
|
606 /* Note: These calls are spread out to insure that the return values
|
|
|
607 of the calls (which may be newly-created strings) are properly
|
|
|
608 GC-protected. */
|
|
854
|
609
|
|
428
|
610 GCPRO1 (dir);
|
|
771
|
611
|
|
|
612 dir = current_buffer->directory;
|
|
|
613 /* If the current dir has no terminating slash, we'll get undesirable
|
|
|
614 results, so put the slash back. */
|
|
|
615 dir = Ffile_name_as_directory (dir);
|
|
428
|
616 dir = Funhandled_file_name_directory (dir);
|
|
|
617 dir = expand_and_dir_to_file (dir, Qnil);
|
|
771
|
618
|
|
2367
|
619 str = alloca_ibytes (XSTRING_LENGTH (dir) + 2);
|
|
428
|
620 len = XSTRING_LENGTH (dir);
|
|
|
621 memcpy (str, XSTRING_DATA (dir), len);
|
|
442
|
622 if (!IS_ANY_SEP (str[len - 1]))
|
|
|
623 str[len++] = DIRECTORY_SEP;
|
|
428
|
624 str[len] = 0;
|
|
771
|
625
|
|
|
626 if (sh == 0)
|
|
|
627 sh = egetenv ("SHELL");
|
|
|
628 if (sh == 0)
|
|
1204
|
629 sh = (Ibyte *) "sh";
|
|
771
|
630
|
|
|
631 C_STRING_TO_EXTERNAL (sh, shext, Qfile_name);
|
|
|
632
|
|
|
633 UNGCPRO;
|
|
428
|
634
|
|
442
|
635 #ifdef WIN32_NATIVE
|
|
|
636
|
|
771
|
637 if (str)
|
|
|
638 qxe_chdir (str);
|
|
|
639
|
|
|
640 /* Waits for process completion */
|
|
|
641 if (_spawnlp (_P_WAIT, shext, shext, NULL) != 0)
|
|
|
642 report_process_error ("Can't spawn subshell", Qunbound);
|
|
|
643 else
|
|
|
644 return; /* we're done, no need to wait for termination */
|
|
|
645
|
|
|
646 #else /* not WIN32_NATIVE */
|
|
|
647
|
|
|
648 {
|
|
|
649 int pid;
|
|
|
650 struct save_signal saved_handlers[5];
|
|
|
651
|
|
|
652 saved_handlers[0].code = SIGINT;
|
|
|
653 saved_handlers[1].code = SIGQUIT;
|
|
|
654 saved_handlers[2].code = SIGTERM;
|
|
|
655 #ifdef SIGIO
|
|
|
656 saved_handlers[3].code = SIGIO;
|
|
|
657 saved_handlers[4].code = 0;
|
|
|
658 #else
|
|
|
659 saved_handlers[3].code = 0;
|
|
|
660 #endif
|
|
|
661
|
|
|
662 pid = fork ();
|
|
|
663
|
|
|
664 if (pid == -1)
|
|
563
|
665 report_process_error ("Can't spawn subshell", Qunbound);
|
|
771
|
666 if (pid == 0)
|
|
|
667 {
|
|
|
668 if (str)
|
|
|
669 qxe_chdir (str);
|
|
442
|
670
|
|
|
671 #if !defined (NO_SUBPROCESSES)
|
|
771
|
672 close_process_descs (); /* Close Emacs's pipes/ptys */
|
|
428
|
673 #endif
|
|
|
674
|
|
|
675 #ifdef SET_EMACS_PRIORITY
|
|
771
|
676 if (emacs_priority != 0)
|
|
|
677 nice (-emacs_priority); /* Give the new shell the default priority */
|
|
428
|
678 #endif
|
|
|
679
|
|
771
|
680 execlp (shext, shext, 0);
|
|
|
681 retry_write (1, "Can't execute subshell", 22);
|
|
|
682 _exit (1);
|
|
|
683 }
|
|
|
684
|
|
|
685 save_signal_handlers (saved_handlers);
|
|
|
686 synch_process_alive = 1;
|
|
|
687 wait_for_termination (pid);
|
|
|
688 restore_signal_handlers (saved_handlers);
|
|
428
|
689 }
|
|
|
690
|
|
442
|
691 #endif /* not WIN32_NATIVE */
|
|
428
|
692 }
|
|
|
693
|
|
|
694 #endif /* !defined (SIGTSTP) && !defined (USG_JOBCTRL) */
|
|
|
695
|
|
|
696
|
|
|
697
|
|
|
698 /* Suspend the Emacs process; give terminal to its superior. */
|
|
|
699 void
|
|
|
700 sys_suspend (void)
|
|
|
701 {
|
|
|
702 #if defined (SIGTSTP)
|
|
|
703 {
|
|
|
704 int pgrp = EMACS_GET_PROCESS_GROUP ();
|
|
|
705 EMACS_KILLPG (pgrp, SIGTSTP);
|
|
|
706 }
|
|
|
707
|
|
|
708 #elif defined (USG_JOBCTRL)
|
|
|
709 /* If you don't know what this is don't mess with it */
|
|
|
710 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
|
|
|
711 kill (getpid (), SIGQUIT);
|
|
|
712
|
|
|
713 #else /* No SIGTSTP or USG_JOBCTRL */
|
|
|
714
|
|
|
715 /* On a system where suspending is not implemented,
|
|
|
716 instead fork a subshell and let it talk directly to the terminal
|
|
|
717 while we wait. */
|
|
|
718 sys_subshell ();
|
|
|
719
|
|
|
720 #endif
|
|
|
721 }
|
|
|
722
|
|
|
723 /* Suspend a process if possible; give terminal to its superior. */
|
|
|
724 void
|
|
2340
|
725 sys_suspend_process (
|
|
|
726 #ifdef SIGTSTP
|
|
|
727 int process
|
|
|
728 #else
|
|
|
729 int UNUSED (process)
|
|
|
730 #endif
|
|
|
731 )
|
|
428
|
732 {
|
|
|
733 /* I don't doubt that it is possible to suspend processes on
|
|
|
734 * VMS machines or thost that use USG_JOBCTRL,
|
|
|
735 * but I don't know how to do it, so...
|
|
|
736 */
|
|
|
737 #if defined (SIGTSTP)
|
|
|
738 kill(process, SIGTSTP);
|
|
|
739 #endif
|
|
|
740 }
|
|
|
741
|
|
|
742
|
|
|
743 /* Given FD, obtain pty buffer size. When no luck, a good guess is made,
|
|
442
|
744 so that the function works even when fd is not a pty. */
|
|
428
|
745
|
|
|
746 int
|
|
2340
|
747 get_pty_max_bytes (
|
|
|
748 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
|
|
|
749 int fd
|
|
|
750 #else
|
|
|
751 int UNUSED (fd)
|
|
|
752 #endif
|
|
|
753 )
|
|
428
|
754 {
|
|
442
|
755 /* DEC OSF 4.0 fpathconf returns 255, but xemacs hangs on long shell
|
|
|
756 input lines if we return 253. 252 is OK!. So let's leave a bit
|
|
|
757 of slack for the newline that xemacs will insert, and for those
|
|
|
758 inevitable vendor off-by-one-or-two-or-three bugs. */
|
|
|
759 #define MAX_CANON_SLACK 10
|
|
|
760 #define SAFE_MAX_CANON (127 - MAX_CANON_SLACK)
|
|
428
|
761 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
|
|
442
|
762 {
|
|
|
763 int max_canon = fpathconf (fd, _PC_MAX_CANON);
|
|
|
764 #ifdef __hpux__
|
|
|
765 /* HP-UX 10.20 fpathconf returns 768, but this results in
|
|
|
766 truncated input lines, while 255 works. */
|
|
|
767 if (max_canon > 255) max_canon = 255;
|
|
428
|
768 #endif
|
|
442
|
769 return (max_canon < 0 ? SAFE_MAX_CANON :
|
|
|
770 max_canon > SAFE_MAX_CANON ? max_canon - MAX_CANON_SLACK :
|
|
|
771 max_canon);
|
|
|
772 }
|
|
|
773 #elif defined (_POSIX_MAX_CANON)
|
|
|
774 return (_POSIX_MAX_CANON > SAFE_MAX_CANON ?
|
|
|
775 _POSIX_MAX_CANON - MAX_CANON_SLACK :
|
|
|
776 _POSIX_MAX_CANON);
|
|
|
777 #else
|
|
|
778 return SAFE_MAX_CANON;
|
|
|
779 #endif
|
|
428
|
780 }
|
|
|
781
|
|
|
782 /* Figure out the eof character for the FD. */
|
|
|
783
|
|
867
|
784 Ibyte
|
|
428
|
785 get_eof_char (int fd)
|
|
|
786 {
|
|
867
|
787 const Ibyte ctrl_d = (Ibyte) '\004';
|
|
428
|
788
|
|
|
789 if (!isatty (fd))
|
|
|
790 return ctrl_d;
|
|
|
791 #ifdef HAVE_TERMIOS
|
|
|
792 {
|
|
|
793 struct termios t;
|
|
|
794 tcgetattr (fd, &t);
|
|
|
795 #if 0
|
|
|
796 /* What is the following line designed to do??? -mrb */
|
|
647
|
797 if ((int) strlen ((const char *) t.c_cc) < (VEOF + 1))
|
|
428
|
798 return ctrl_d;
|
|
|
799 else
|
|
867
|
800 return (Ibyte) t.c_cc[VEOF];
|
|
428
|
801 #endif
|
|
867
|
802 return t.c_cc[VEOF] == _POSIX_VDISABLE ? ctrl_d : (Ibyte) t.c_cc[VEOF];
|
|
428
|
803 }
|
|
|
804 #else /* ! HAVE_TERMIOS */
|
|
|
805 /* On Berkeley descendants, the following IOCTL's retrieve the
|
|
|
806 current control characters. */
|
|
|
807 #if defined (TIOCGETC)
|
|
|
808 {
|
|
|
809 struct tchars c;
|
|
|
810 ioctl (fd, TIOCGETC, &c);
|
|
867
|
811 return (Ibyte) c.t_eofc;
|
|
428
|
812 }
|
|
|
813 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
|
|
|
814 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
|
|
|
815 characters. */
|
|
|
816 #ifdef TCGETA
|
|
|
817 {
|
|
|
818 struct termio t;
|
|
|
819 ioctl (fd, TCGETA, &t);
|
|
647
|
820 if ((int) strlen ((const char *) t.c_cc) < (VINTR + 1))
|
|
428
|
821 return ctrl_d;
|
|
|
822 else
|
|
867
|
823 return (Ibyte) t.c_cc[VINTR];
|
|
428
|
824 }
|
|
|
825 #else /* ! defined (TCGETA) */
|
|
|
826 /* Rather than complain, we'll just guess ^D, which is what
|
|
|
827 * earlier emacsen always used. */
|
|
|
828 return ctrl_d;
|
|
|
829 #endif /* ! defined (TCGETA) */
|
|
|
830 #endif /* ! defined (TIOCGETC) */
|
|
|
831 #endif /* ! defined (HAVE_TERMIOS) */
|
|
|
832 }
|
|
|
833
|
|
|
834 /* Set the logical window size associated with descriptor FD
|
|
|
835 to HEIGHT and WIDTH. This is used mainly with ptys. */
|
|
|
836
|
|
|
837 int
|
|
2340
|
838 set_window_size (
|
|
|
839 #if defined (TIOCSWINSZ) || defined (TIOCSSIZE)
|
|
|
840 int fd, int height, int width
|
|
|
841 #else
|
|
|
842 int UNUSED (fd), int UNUSED (height), int UNUSED (width)
|
|
|
843 #endif
|
|
|
844 )
|
|
428
|
845 {
|
|
|
846 #ifdef TIOCSWINSZ
|
|
|
847
|
|
|
848 /* BSD-style. */
|
|
|
849 struct winsize size;
|
|
|
850 size.ws_row = height;
|
|
|
851 size.ws_col = width;
|
|
|
852
|
|
|
853 if (ioctl (fd, TIOCSWINSZ, &size) == -1)
|
|
|
854 return 0; /* error */
|
|
|
855 else
|
|
|
856 return 1;
|
|
|
857
|
|
|
858 #elif defined (TIOCSSIZE)
|
|
|
859
|
|
|
860 /* SunOS - style. */
|
|
|
861 struct ttysize size;
|
|
|
862 size.ts_lines = height;
|
|
|
863 size.ts_cols = width;
|
|
|
864
|
|
|
865 if (ioctl (fd, TIOCGSIZE, &size) == -1)
|
|
|
866 return 0;
|
|
|
867 else
|
|
|
868 return 1;
|
|
|
869 #else
|
|
|
870 return -1;
|
|
|
871 #endif
|
|
|
872 }
|
|
|
873
|
|
|
874 /* Set up the proper status flags for use of a pty. */
|
|
|
875
|
|
|
876 void
|
|
2340
|
877 setup_pty (
|
|
|
878 #ifdef TIOCPKT
|
|
|
879 int fd
|
|
|
880 #else
|
|
|
881 int UNUSED (fd)
|
|
|
882 #endif
|
|
|
883 )
|
|
428
|
884 {
|
|
|
885 #ifdef IBMRTAIX
|
|
|
886 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
|
|
|
887 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
|
|
|
888 /* cause EMACS not to die when it should, i.e., when its own controlling */
|
|
|
889 /* tty goes away. I've complained to the AIX developers, and they may */
|
|
|
890 /* change this behavior, but I'm not going to hold my breath. */
|
|
613
|
891 EMACS_SIGNAL (SIGHUP, SIG_IGN);
|
|
535
|
892 #endif /* IBMRTAIX */
|
|
|
893
|
|
428
|
894 #ifdef TIOCPKT
|
|
|
895 /* In some systems (Linux through 2.0.0, at least), packet mode doesn't
|
|
|
896 get cleared when a pty is closed, so we need to clear it here.
|
|
|
897 Linux pre2.0.13 contained an attempted fix for this (from Ted Ts'o,
|
|
|
898 tytso@mit.edu), but apparently it messed up rlogind and telnetd, so he
|
|
|
899 removed the fix in pre2.0.14. - dkindred@cs.cmu.edu
|
|
|
900 */
|
|
|
901 {
|
|
|
902 int off = 0;
|
|
|
903 ioctl (fd, TIOCPKT, (char *)&off);
|
|
|
904 }
|
|
535
|
905 #endif /* TIOCPKT */
|
|
428
|
906 }
|
|
|
907
|
|
|
908
|
|
|
909 /************************************************************************/
|
|
|
910 /* TTY control */
|
|
|
911 /************************************************************************/
|
|
|
912
|
|
|
913 /* ------------------------------------------------------ */
|
|
|
914 /* get baud rate */
|
|
|
915 /* ------------------------------------------------------ */
|
|
|
916
|
|
|
917 /* It really makes more sense for the baud-rate to be console-specific
|
|
|
918 and not device-specific, but it's (at least potentially) used for output
|
|
|
919 decisions. */
|
|
|
920
|
|
|
921 void
|
|
|
922 init_baud_rate (struct device *d)
|
|
|
923 {
|
|
|
924 if (DEVICE_WIN_P (d) || DEVICE_STREAM_P (d))
|
|
|
925 {
|
|
|
926 DEVICE_BAUD_RATE (d) = 38400;
|
|
|
927 return;
|
|
|
928 }
|
|
|
929
|
|
|
930 #ifdef HAVE_TTY
|
|
|
931 assert (DEVICE_TTY_P (d));
|
|
|
932 {
|
|
647
|
933 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
|
|
428
|
934 int input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
814
|
935 #ifdef HAVE_TERMIOS
|
|
428
|
936 struct termios sg;
|
|
|
937
|
|
|
938 sg.c_cflag = B9600;
|
|
|
939 tcgetattr (input_fd, &sg);
|
|
|
940 DEVICE_TTY_DATA (d)->ospeed = cfgetospeed (&sg);
|
|
|
941 # if defined (USE_GETOBAUD) && defined (getobaud)
|
|
|
942 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
|
|
|
943 if (DEVICE_TTY_DATA (d)->ospeed == 0)
|
|
|
944 DEVICE_TTY_DATA (d)->ospeed = getobaud (sg.c_cflag);
|
|
|
945 # endif
|
|
|
946 #elif defined (HAVE_TERMIO)
|
|
|
947 struct termio sg;
|
|
|
948
|
|
|
949 sg.c_cflag = B9600;
|
|
|
950 # ifdef HAVE_TCATTR
|
|
|
951 tcgetattr (input_fd, &sg);
|
|
|
952 # else
|
|
|
953 ioctl (input_fd, TCGETA, &sg);
|
|
|
954 # endif
|
|
|
955 DEVICE_TTY_DATA (d)->ospeed = sg.c_cflag & CBAUD;
|
|
|
956 #else /* neither TERMIOS nor TERMIO */
|
|
|
957 struct sgttyb sg;
|
|
|
958
|
|
|
959 sg.sg_ospeed = B9600;
|
|
|
960 if (ioctl (input_fd, TIOCGETP, &sg) < 0)
|
|
2500
|
961 ABORT ();
|
|
428
|
962 DEVICE_TTY_DATA (d)->ospeed = sg.sg_ospeed;
|
|
|
963 #endif
|
|
|
964 }
|
|
|
965
|
|
|
966 DEVICE_BAUD_RATE (d) =
|
|
|
967 (DEVICE_TTY_DATA (d)->ospeed < countof (baud_convert)
|
|
|
968 ? baud_convert[DEVICE_TTY_DATA (d)->ospeed]
|
|
|
969 : 9600);
|
|
|
970
|
|
|
971 if (DEVICE_BAUD_RATE (d) == 0)
|
|
|
972 DEVICE_BAUD_RATE (d) = 1200;
|
|
|
973 #endif /* HAVE_TTY */
|
|
|
974 }
|
|
|
975
|
|
|
976
|
|
|
977 /* ------------------------------------------------------ */
|
|
|
978 /* SIGIO control */
|
|
|
979 /* ------------------------------------------------------ */
|
|
|
980
|
|
853
|
981 #if defined (SIGIO) && !defined (BROKEN_SIGIO)
|
|
428
|
982
|
|
|
983 static void
|
|
|
984 init_sigio_on_device (struct device *d)
|
|
|
985 {
|
|
|
986 int filedesc = DEVICE_INFD (d);
|
|
|
987
|
|
|
988 #if defined (FIOSSAIOOWN)
|
|
|
989 { /* HPUX stuff */
|
|
|
990 int owner = getpid ();
|
|
|
991 int ioctl_status;
|
|
|
992 if (DEVICE_TTY_P (d))
|
|
|
993 {
|
|
|
994 ioctl_status = ioctl (filedesc, FIOGSAIOOWN,
|
|
|
995 &DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
996 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, &owner);
|
|
|
997 }
|
|
|
998 #ifdef HAVE_WINDOW_SYSTEM
|
|
|
999 else if (!DEVICE_STREAM_P (d))
|
|
|
1000 {
|
|
|
1001 ioctl_status = ioctl (filedesc, SIOCGPGRP,
|
|
|
1002 &DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
1003 ioctl_status = ioctl (filedesc, SIOCSPGRP, &owner);
|
|
|
1004 }
|
|
|
1005 #endif
|
|
|
1006 }
|
|
|
1007 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG)
|
|
|
1008 DEVICE_OLD_FCNTL_OWNER (d) = fcntl (filedesc, F_GETOWN, 0);
|
|
|
1009 # ifdef F_SETOWN_SOCK_NEG
|
|
|
1010 /* stdin is a socket here */
|
|
|
1011 fcntl (filedesc, F_SETOWN, -getpid ());
|
|
|
1012 # else
|
|
|
1013 fcntl (filedesc, F_SETOWN, getpid ());
|
|
|
1014 # endif
|
|
|
1015 #endif
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 static void
|
|
|
1019 reset_sigio_on_device (struct device *d)
|
|
|
1020 {
|
|
|
1021 int filedesc = DEVICE_INFD (d);
|
|
|
1022
|
|
|
1023 #if defined (FIOSSAIOOWN)
|
|
|
1024 { /* HPUX stuff */
|
|
|
1025 int ioctl_status;
|
|
|
1026 if (DEVICE_TTY_P (d))
|
|
|
1027 {
|
|
|
1028 ioctl_status = ioctl (filedesc, FIOSSAIOOWN,
|
|
|
1029 &DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
1030 }
|
|
|
1031 #ifdef HAVE_WINDOW_SYSTEM
|
|
|
1032 else if (!DEVICE_STREAM_P (d))
|
|
|
1033 {
|
|
|
1034 ioctl_status = ioctl (filedesc, SIOCSPGRP,
|
|
|
1035 &DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
1036 }
|
|
|
1037 #endif
|
|
|
1038 }
|
|
|
1039 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG)
|
|
|
1040 fcntl (filedesc, F_SETOWN, DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
1041 #endif
|
|
|
1042 }
|
|
|
1043
|
|
|
1044 static void
|
|
|
1045 request_sigio_on_device (struct device *d)
|
|
|
1046 {
|
|
|
1047 int filedesc = DEVICE_INFD (d);
|
|
|
1048
|
|
502
|
1049 /* NOTE: It appears that Linux has its own mechanism for requesting
|
|
|
1050 SIGIO, using the F_GETSIG and F_SETSIG commands to fcntl().
|
|
|
1051 These let you pick which signal you want sent (not just SIGIO),
|
|
|
1052 and if you do this, you get additional info which tells you which
|
|
|
1053 file descriptor has input ready on it. The man page says:
|
|
|
1054
|
|
|
1055 Using these mechanisms, a program can implement fully
|
|
|
1056 asynchronous I/O without using select(2) or poll(2) most
|
|
|
1057 of the time.
|
|
|
1058
|
|
|
1059 The use of O_ASYNC, F_GETOWN, F_SETOWN is specific to BSD
|
|
|
1060 and Linux. F_GETSIG and F_SETSIG are Linux-specific.
|
|
|
1061 POSIX has asynchronous I/O and the aio_sigevent structure
|
|
|
1062 to achieve similar things; these are also available in
|
|
|
1063 Linux as part of the GNU C Library (Glibc).
|
|
|
1064
|
|
|
1065 But it appears that Linux also supports O_ASYNC, so I see no
|
|
|
1066 particular need to switch. --ben
|
|
|
1067 */
|
|
|
1068
|
|
|
1069 #if defined (I_SETSIG) && !defined (HPUX10) && !defined (LINUX)
|
|
428
|
1070 {
|
|
502
|
1071 int events = 0;
|
|
428
|
1072 ioctl (filedesc, I_GETSIG, &events);
|
|
|
1073 ioctl (filedesc, I_SETSIG, events | S_INPUT);
|
|
|
1074 }
|
|
502
|
1075 #elif defined (O_ASYNC)
|
|
|
1076 /* Generally FASYNC and O_ASYNC are both defined, and both equal;
|
|
|
1077 but let's not depend on that. O_ASYNC appears to be more
|
|
|
1078 standard (at least the Linux include files think so), so
|
|
|
1079 check it first. */
|
|
|
1080 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | O_ASYNC);
|
|
428
|
1081 #elif defined (FASYNC)
|
|
|
1082 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) | FASYNC);
|
|
|
1083 #elif defined (FIOSSAIOSTAT)
|
|
|
1084 {
|
|
|
1085 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for
|
|
|
1086 sockets and other devices for some bizarre reason. We guess
|
|
|
1087 that an X device is a socket, and tty devices aren't. We then
|
|
|
1088 use the following crud to do the appropriate thing. */
|
|
|
1089 int on = 1;
|
|
|
1090 int ioctl_status; /* ####DG: check if IOCTL succeeds here. */
|
|
|
1091
|
|
|
1092 if (DEVICE_TTY_P (d))
|
|
|
1093 {
|
|
|
1094 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &on);
|
|
|
1095 }
|
|
|
1096 #ifdef HAVE_WINDOW_SYSTEM
|
|
|
1097 else if (!DEVICE_STREAM_P (d))
|
|
|
1098 {
|
|
|
1099 ioctl_status = ioctl (filedesc, FIOASYNC, &on);
|
|
|
1100 }
|
|
|
1101 #endif
|
|
|
1102 }
|
|
|
1103 #elif defined (FIOASYNC)
|
|
|
1104 {
|
|
|
1105 int on = 1;
|
|
|
1106 ioctl (filedesc, FIOASYNC, &on);
|
|
|
1107 }
|
|
|
1108 #endif
|
|
|
1109
|
|
|
1110 #if defined (_CX_UX) /* #### Is this crap necessary? */
|
|
|
1111 EMACS_UNBLOCK_SIGNAL (SIGIO);
|
|
|
1112 #endif
|
|
|
1113 }
|
|
|
1114
|
|
|
1115 static void
|
|
|
1116 unrequest_sigio_on_device (struct device *d)
|
|
|
1117 {
|
|
|
1118 int filedesc = DEVICE_INFD (d);
|
|
|
1119
|
|
502
|
1120 #if defined (I_SETSIG) && !defined (HPUX10) && !defined (LINUX)
|
|
428
|
1121 {
|
|
502
|
1122 int events = 0;
|
|
428
|
1123 ioctl (filedesc, I_GETSIG, &events);
|
|
|
1124 ioctl (filedesc, I_SETSIG, events & ~S_INPUT);
|
|
|
1125 }
|
|
502
|
1126 #elif defined (O_ASYNC)
|
|
|
1127 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~O_ASYNC);
|
|
428
|
1128 #elif defined (FASYNC)
|
|
|
1129 fcntl (filedesc, F_SETFL, fcntl (filedesc, F_GETFL, 0) & ~FASYNC);
|
|
|
1130 #elif defined (FIOSSAIOSTAT)
|
|
|
1131 {
|
|
|
1132 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for
|
|
|
1133 sockets and other devices for some bizarre reason. We guess
|
|
|
1134 that an X device is a socket, and tty devices aren't. We then
|
|
|
1135 use the following crud to do the appropriate thing. */
|
|
|
1136
|
|
|
1137 int off = 0;
|
|
|
1138 int ioctl_status;
|
|
|
1139
|
|
|
1140 /* See comment for request_sigio_on_device */
|
|
|
1141
|
|
|
1142 if (DEVICE_TTY_P (d))
|
|
|
1143 {
|
|
|
1144 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &off);
|
|
|
1145 }
|
|
|
1146 else
|
|
|
1147 {
|
|
|
1148 ioctl_status = ioctl (filedesc, FIOASYNC, &off);
|
|
|
1149 }
|
|
|
1150 }
|
|
|
1151 #elif defined (FIOASYNC)
|
|
|
1152 {
|
|
|
1153 int off = 0;
|
|
|
1154 ioctl (filedesc, FIOASYNC, &off);
|
|
|
1155 }
|
|
|
1156 #endif
|
|
|
1157 }
|
|
|
1158
|
|
|
1159 void
|
|
|
1160 request_sigio (void)
|
|
|
1161 {
|
|
|
1162 Lisp_Object devcons, concons;
|
|
|
1163
|
|
|
1164 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
1165 {
|
|
|
1166 struct device *d;
|
|
|
1167
|
|
|
1168 d = XDEVICE (XCAR (devcons));
|
|
|
1169
|
|
|
1170 if (!DEVICE_STREAM_P (d))
|
|
|
1171 request_sigio_on_device (d);
|
|
|
1172 }
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 void
|
|
|
1176 unrequest_sigio (void)
|
|
|
1177 {
|
|
|
1178 Lisp_Object devcons, concons;
|
|
|
1179
|
|
|
1180 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
1181 {
|
|
|
1182 struct device *d;
|
|
|
1183
|
|
|
1184 d = XDEVICE (XCAR (devcons));
|
|
|
1185
|
|
|
1186 if (!DEVICE_STREAM_P (d))
|
|
|
1187 unrequest_sigio_on_device (d);
|
|
|
1188 }
|
|
|
1189 }
|
|
|
1190
|
|
|
1191 #endif /* SIGIO */
|
|
|
1192
|
|
|
1193 /* ------------------------------------------------------ */
|
|
|
1194 /* Changing Emacs's process group */
|
|
|
1195 /* ------------------------------------------------------ */
|
|
|
1196
|
|
|
1197 /* Saving and restoring the process group of Emacs's terminal. */
|
|
|
1198
|
|
|
1199 /* On some systems, apparently (?!) Emacs must be in its own process
|
|
|
1200 group in order to receive SIGIO correctly. On other systems
|
|
|
1201 (e.g. Solaris), it's not required and doing it makes things
|
|
|
1202 get fucked up. So, we only do it when
|
|
|
1203 SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP is defined. Basically,
|
|
|
1204 this is only required for BSD 4.2 systems. (Actually, I bet
|
|
|
1205 we don't have to do this at all -- those systems also
|
|
|
1206 required interrupt input, which we don't support.)
|
|
|
1207
|
|
|
1208 If Emacs was in its own process group (i.e. inherited_pgroup ==
|
|
|
1209 getpid ()), then we know we're running under a shell with job
|
|
|
1210 control (Emacs would never be run as part of a pipeline).
|
|
|
1211 Everything is fine.
|
|
|
1212
|
|
|
1213 If Emacs was not in its own process group, then we know we're
|
|
|
1214 running under a shell (or a caller) that doesn't know how to
|
|
|
1215 separate itself from Emacs (like sh). Emacs must be in its own
|
|
|
1216 process group in order to receive SIGIO correctly. In this
|
|
|
1217 situation, we put ourselves in our own pgroup, forcibly set the
|
|
|
1218 tty's pgroup to our pgroup, and make sure to restore and reinstate
|
|
|
1219 the tty's pgroup just like any other terminal setting. If
|
|
|
1220 inherited_group was not the tty's pgroup, then we'll get a
|
|
|
1221 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
|
|
|
1222 it goes foreground in the future, which is what should happen. */
|
|
|
1223
|
|
|
1224 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1225
|
|
442
|
1226 static pid_t inherited_pgroup;
|
|
|
1227 static pid_t inherited_tty_pgroup;
|
|
428
|
1228
|
|
|
1229 #endif
|
|
|
1230
|
|
|
1231 void
|
|
|
1232 munge_tty_process_group (void)
|
|
|
1233 {
|
|
|
1234 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1235 if (noninteractive)
|
|
|
1236 return;
|
|
|
1237
|
|
|
1238 /* Only do this munging if we have a device on the controlling
|
|
|
1239 terminal. See the large comment below. */
|
|
|
1240
|
|
|
1241 if (CONSOLEP (Vcontrolling_terminal) &&
|
|
|
1242 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
|
|
|
1243 {
|
|
|
1244 int fd = open ("/dev/tty", O_RDWR, 0);
|
|
442
|
1245 pid_t me = getpid ();
|
|
428
|
1246 EMACS_BLOCK_SIGNAL (SIGTTOU);
|
|
|
1247 EMACS_SET_TTY_PROCESS_GROUP (fd, &me);
|
|
|
1248 EMACS_UNBLOCK_SIGNAL (SIGTTOU);
|
|
771
|
1249 retry_close (fd);
|
|
428
|
1250 }
|
|
|
1251 #endif
|
|
|
1252 }
|
|
|
1253
|
|
|
1254 /* Split off the foreground process group to Emacs alone.
|
|
|
1255 When we are in the foreground, but not started in our own process
|
|
|
1256 group, redirect the TTY to point to our own process group. We need
|
|
|
1257 to be in our own process group to receive SIGIO properly. */
|
|
|
1258 static void
|
|
|
1259 munge_process_groups (void)
|
|
|
1260 {
|
|
|
1261 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1262 if (noninteractive)
|
|
|
1263 return;
|
|
|
1264
|
|
|
1265 EMACS_SEPARATE_PROCESS_GROUP ();
|
|
|
1266
|
|
|
1267 munge_tty_process_group ();
|
|
|
1268 #endif
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 void
|
|
|
1272 unmunge_tty_process_group (void)
|
|
|
1273 {
|
|
|
1274 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1275 {
|
|
|
1276 int fd = open ("/dev/tty", O_RDWR, 0);
|
|
|
1277 EMACS_BLOCK_SIGNAL (SIGTTOU);
|
|
|
1278 EMACS_SET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup);
|
|
|
1279 EMACS_UNBLOCK_SIGNAL (SIGTTOU);
|
|
771
|
1280 retry_close (fd);
|
|
428
|
1281 }
|
|
|
1282 #endif
|
|
|
1283 }
|
|
|
1284
|
|
|
1285 /* Set the tty to our original foreground group.
|
|
|
1286 Also restore the original process group (put us back into sh's
|
|
|
1287 process group), so that ^Z will suspend both us and sh. */
|
|
|
1288 static void
|
|
|
1289 unmunge_process_groups (void)
|
|
|
1290 {
|
|
|
1291 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1292 if (noninteractive)
|
|
|
1293 return;
|
|
|
1294
|
|
|
1295 unmunge_tty_process_group ();
|
|
|
1296
|
|
|
1297 EMACS_SET_PROCESS_GROUP (inherited_pgroup);
|
|
|
1298 #endif
|
|
|
1299 }
|
|
|
1300
|
|
|
1301 /* According to some old wisdom, we need to be in a separate process
|
|
|
1302 group for SIGIO to work correctly (at least on some systems ...).
|
|
|
1303 So go ahead and put ourselves into our own process group. This
|
|
|
1304 will fail if we're already in our own process group, but who cares.
|
|
|
1305 Also record whether we were in our own process group. (In general,
|
|
|
1306 we will already be in our own process group if we were started from
|
|
|
1307 a job-control shell like csh, but not if we were started from sh).
|
|
|
1308
|
|
|
1309 If we succeeded in changing our process group, then we will no
|
|
|
1310 longer be in the foreground process group of our controlling
|
|
|
1311 terminal. Therefore, if we have a console open onto this terminal,
|
|
|
1312 we have to change the controlling terminal's foreground process
|
|
|
1313 group (otherwise we will get stopped with a SIGTTIN signal when
|
|
|
1314 attempting to read from the terminal). It's important,
|
|
|
1315 however, that we do this *only* when we have a console open onto
|
|
|
1316 the terminal. It's a decidedly bad idea to do so otherwise,
|
|
|
1317 especially if XEmacs was started from the background. */
|
|
|
1318
|
|
|
1319 void
|
|
|
1320 init_process_group (void)
|
|
|
1321 {
|
|
|
1322 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1323 if (! noninteractive)
|
|
|
1324 {
|
|
|
1325 int fd = open ("/dev/tty", O_RDWR, 0);
|
|
|
1326 inherited_pgroup = EMACS_GET_PROCESS_GROUP ();
|
|
|
1327 EMACS_GET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup);
|
|
771
|
1328 retry_close (fd);
|
|
428
|
1329 EMACS_SEPARATE_PROCESS_GROUP ();
|
|
|
1330 }
|
|
|
1331 #endif
|
|
|
1332 }
|
|
|
1333
|
|
|
1334 void
|
|
|
1335 disconnect_controlling_terminal (void)
|
|
|
1336 {
|
|
|
1337 # ifdef HAVE_SETSID
|
|
|
1338 /* Controlling terminals are attached to a session.
|
|
|
1339 Create a new session for us; it will have no controlling
|
|
|
1340 terminal. This also, of course, puts us in our own
|
|
|
1341 process group. */
|
|
|
1342 setsid ();
|
|
|
1343 # else
|
|
|
1344 /* Put us in our own process group. */
|
|
|
1345 EMACS_SEPARATE_PROCESS_GROUP ();
|
|
|
1346 # if defined (TIOCNOTTY)
|
|
|
1347 /* This is the older way of disconnecting the controlling
|
|
|
1348 terminal, on 4.3 BSD. We must open /dev/tty; using
|
|
|
1349 filedesc 0 is not sufficient because it could be
|
|
|
1350 something else (e.g. our stdin was redirected to
|
|
|
1351 another terminal).
|
|
|
1352 */
|
|
|
1353 {
|
|
|
1354 int j = open ("/dev/tty", O_RDWR, 0);
|
|
|
1355 ioctl (j, TIOCNOTTY, 0);
|
|
771
|
1356 retry_close (j);
|
|
428
|
1357 }
|
|
|
1358 # endif /* TIOCNOTTY */
|
|
|
1359 /*
|
|
|
1360 On systems without TIOCNOTTY and without
|
|
|
1361 setsid(), we don't need to do anything more to
|
|
|
1362 disconnect our controlling terminal. Here is
|
|
|
1363 what the man page for termio(7) from a SYSV 3.2
|
|
|
1364 system says:
|
|
|
1365
|
|
|
1366 "The first terminal file opened by the process group leader
|
|
|
1367 of a terminal file not already associated with a process
|
|
|
1368 group becomes the control terminal for that process group.
|
|
|
1369 The control terminal plays a special role in handling quit
|
|
|
1370 and interrupt signals, as discussed below. The control
|
|
|
1371 terminal is inherited by a child process during a fork(2).
|
|
|
1372 A process can break this association by changing its process
|
|
|
1373 group using setpgrp(2)."
|
|
|
1374
|
|
|
1375 */
|
|
|
1376 # endif /* not HAVE_SETSID */
|
|
|
1377 }
|
|
|
1378
|
|
|
1379
|
|
|
1380 /* ------------------------------------------------------ */
|
|
|
1381 /* Getting and setting emacs_tty structures */
|
|
|
1382 /* ------------------------------------------------------ */
|
|
|
1383
|
|
|
1384 /* It's wrong to encase these into #ifdef HAVE_TTY because we need
|
|
|
1385 them for child TTY processes. */
|
|
|
1386 /* However, this does break NT support while we don't do child TTY processes */
|
|
442
|
1387 #ifndef WIN32_NATIVE
|
|
428
|
1388
|
|
|
1389 /* Set *TC to the parameters associated with the terminal FD.
|
|
|
1390 Return zero if all's well, or -1 if we ran into an error we
|
|
|
1391 couldn't deal with. */
|
|
|
1392 int
|
|
|
1393 emacs_get_tty (int fd, struct emacs_tty *settings)
|
|
|
1394 {
|
|
|
1395 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
|
|
|
1396 #ifdef HAVE_TCATTR
|
|
|
1397 /* We have those nifty POSIX tcmumbleattr functions. */
|
|
|
1398 if (tcgetattr (fd, &settings->main) < 0)
|
|
|
1399 return -1;
|
|
|
1400
|
|
|
1401 #elif defined HAVE_TERMIO
|
|
|
1402 /* The SYSV-style interface? */
|
|
|
1403 if (ioctl (fd, TCGETA, &settings->main) < 0)
|
|
|
1404 return -1;
|
|
|
1405
|
|
814
|
1406 #else
|
|
428
|
1407 /* I give up - I hope you have the BSD ioctls. */
|
|
|
1408 if (ioctl (fd, TIOCGETP, &settings->main) < 0)
|
|
|
1409 return -1;
|
|
|
1410 #endif /* HAVE_TCATTR */
|
|
|
1411
|
|
|
1412 /* Suivant - Do we have to get struct ltchars data? */
|
|
|
1413 #ifdef HAVE_LTCHARS
|
|
|
1414 if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0)
|
|
|
1415 return -1;
|
|
|
1416 #endif
|
|
|
1417
|
|
|
1418 /* How about a struct tchars and a wordful of lmode bits? */
|
|
|
1419 #ifdef HAVE_TCHARS
|
|
|
1420 if (ioctl (fd, TIOCGETC, &settings->tchars) < 0
|
|
|
1421 || ioctl (fd, TIOCLGET, &settings->lmode) < 0)
|
|
|
1422 return -1;
|
|
|
1423 #endif
|
|
|
1424
|
|
|
1425 /* We have survived the tempest. */
|
|
|
1426 return 0;
|
|
|
1427 }
|
|
|
1428
|
|
|
1429 /* Set the parameters of the tty on FD according to the contents of
|
|
|
1430 *SETTINGS. If FLUSHP is non-zero, we discard input.
|
|
430
|
1431 Return 0 if all went well, and -1 if anything failed.
|
|
|
1432 #### All current callers use FLUSHP == 0. */
|
|
428
|
1433
|
|
|
1434 int
|
|
|
1435 emacs_set_tty (int fd, struct emacs_tty *settings, int flushp)
|
|
|
1436 {
|
|
|
1437 /* Set the primary parameters - baud rate, character size, etcetera. */
|
|
|
1438 #ifdef HAVE_TCATTR
|
|
|
1439 int i;
|
|
|
1440 /* We have those nifty POSIX tcmumbleattr functions.
|
|
|
1441 William J. Smith <wjs@wiis.wang.com> writes:
|
|
|
1442 "POSIX 1003.1 defines tcsetattr() to return success if it was
|
|
|
1443 able to perform any of the requested actions, even if some
|
|
|
1444 of the requested actions could not be performed.
|
|
|
1445 We must read settings back to ensure tty setup properly.
|
|
|
1446 AIX requires this to keep tty from hanging occasionally." */
|
|
|
1447 /* This makes sure that we don't loop indefinitely in here. */
|
|
|
1448 for (i = 0 ; i < 10 ; i++)
|
|
|
1449 if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0)
|
|
|
1450 {
|
|
|
1451 if (errno == EINTR)
|
|
|
1452 continue;
|
|
|
1453 else
|
|
|
1454 return -1;
|
|
|
1455 }
|
|
|
1456 else
|
|
|
1457 {
|
|
|
1458 struct termios new;
|
|
|
1459
|
|
|
1460 /* Get the current settings, and see if they're what we asked for. */
|
|
|
1461 tcgetattr (fd, &new);
|
|
|
1462 /* We cannot use memcmp on the whole structure here because under
|
|
|
1463 * aix386 the termios structure has some reserved field that may
|
|
|
1464 * not be filled in.
|
|
|
1465 */
|
|
|
1466 if ( new.c_iflag == settings->main.c_iflag
|
|
|
1467 && new.c_oflag == settings->main.c_oflag
|
|
|
1468 && new.c_cflag == settings->main.c_cflag
|
|
|
1469 && new.c_lflag == settings->main.c_lflag
|
|
|
1470 && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0)
|
|
|
1471 break;
|
|
|
1472 else
|
|
|
1473 continue;
|
|
|
1474 }
|
|
|
1475 #elif defined HAVE_TERMIO
|
|
|
1476 /* The SYSV-style interface? */
|
|
|
1477 if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0)
|
|
|
1478 return -1;
|
|
|
1479
|
|
814
|
1480 #else
|
|
428
|
1481 /* I give up - I hope you have the BSD ioctls. */
|
|
|
1482 if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0)
|
|
|
1483 return -1;
|
|
|
1484 #endif /* HAVE_TCATTR */
|
|
|
1485
|
|
|
1486 /* Suivant - Do we have to get struct ltchars data? */
|
|
|
1487 #ifdef HAVE_LTCHARS
|
|
|
1488 if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0)
|
|
|
1489 return -1;
|
|
|
1490 #endif
|
|
|
1491
|
|
|
1492 /* How about a struct tchars and a wordful of lmode bits? */
|
|
|
1493 #ifdef HAVE_TCHARS
|
|
|
1494 if (ioctl (fd, TIOCSETC, &settings->tchars) < 0
|
|
|
1495 || ioctl (fd, TIOCLSET, &settings->lmode) < 0)
|
|
|
1496 return -1;
|
|
|
1497 #endif
|
|
|
1498
|
|
|
1499 /* We have survived the tempest. */
|
|
|
1500 return 0;
|
|
|
1501 }
|
|
|
1502
|
|
442
|
1503 #endif /* WIN32_NATIVE */
|
|
428
|
1504
|
|
|
1505 /* ------------------------------------------------------ */
|
|
|
1506 /* Initializing a device */
|
|
|
1507 /* ------------------------------------------------------ */
|
|
|
1508
|
|
|
1509 #ifdef HAVE_TTY
|
|
|
1510
|
|
|
1511 /* This may also be defined in stdio,
|
|
|
1512 but if so, this does no harm,
|
|
|
1513 and using the same name avoids wasting the other one's space. */
|
|
|
1514
|
|
|
1515 #if ((defined(USG) || defined(DGUX)) && !defined(__STDC__))
|
|
|
1516 char _sobuf[BUFSIZ+8];
|
|
|
1517 #elif (defined(USG) && !defined(LINUX) && !defined(_SCO_DS)) || defined(IRIX5)
|
|
|
1518 extern unsigned char _sobuf[BUFSIZ+8];
|
|
|
1519 #else
|
|
|
1520 char _sobuf[BUFSIZ];
|
|
|
1521 #endif
|
|
|
1522
|
|
|
1523 #if defined (TIOCGLTC) && defined (HAVE_LTCHARS) /* HAVE_LTCHARS */
|
|
|
1524 static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1};
|
|
|
1525 #endif
|
|
|
1526 #ifdef TIOCGETC /* HAVE_TCHARS */
|
|
|
1527 #ifdef HAVE_TCHARS
|
|
|
1528 static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1};
|
|
|
1529 #endif
|
|
|
1530 #endif
|
|
|
1531
|
|
|
1532 static void
|
|
|
1533 tty_init_sys_modes_on_device (struct device *d)
|
|
|
1534 {
|
|
|
1535 struct emacs_tty tty;
|
|
2286
|
1536 int input_fd;
|
|
|
1537 #if defined (IBMR2AIX) && defined (AIXHFT)
|
|
|
1538 int output_fd;
|
|
|
1539 #endif
|
|
428
|
1540 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
|
|
|
1541
|
|
|
1542 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
2286
|
1543 #if defined (IBMR2AIX) && defined (AIXHFT)
|
|
428
|
1544 output_fd = CONSOLE_TTY_DATA (con)->outfd;
|
|
2286
|
1545 #endif
|
|
428
|
1546
|
|
430
|
1547 emacs_get_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty);
|
|
428
|
1548 tty = CONSOLE_TTY_DATA (con)->old_tty;
|
|
|
1549
|
|
|
1550 con->tty_erase_char = Qnil;
|
|
|
1551
|
|
|
1552 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
|
|
|
1553 /* after all those years... */
|
|
|
1554 con->tty_erase_char = make_char (tty.main.c_cc[VERASE]);
|
|
|
1555 #ifdef DGUX
|
|
|
1556 /* This allows meta to be sent on 8th bit. */
|
|
|
1557 tty.main.c_iflag &= ~INPCK; /* don't check input for parity */
|
|
|
1558 #endif
|
|
|
1559 tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */
|
|
|
1560 tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */
|
|
|
1561 #ifdef ISTRIP
|
|
|
1562 tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */
|
|
|
1563 #endif
|
|
|
1564 tty.main.c_lflag &= ~ECHO; /* Disable echo */
|
|
|
1565 tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */
|
|
|
1566 #ifdef IEXTEN
|
|
|
1567 tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */
|
|
|
1568 #endif
|
|
|
1569 tty.main.c_lflag |= ISIG; /* Enable signals */
|
|
|
1570 if (TTY_FLAGS (con).flow_control)
|
|
|
1571 {
|
|
|
1572 tty.main.c_iflag |= IXON; /* Enable start/stop output control */
|
|
|
1573 #ifdef IXANY
|
|
|
1574 tty.main.c_iflag &= ~IXANY;
|
|
|
1575 #endif /* IXANY */
|
|
|
1576 }
|
|
|
1577 else
|
|
|
1578 tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */
|
|
|
1579 tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL
|
|
|
1580 on output */
|
|
513
|
1581
|
|
|
1582 #if 0
|
|
|
1583 /* We used to disable tab expansion here, but this is the user's decision. */
|
|
|
1584 #if defined (TABDLY) && defined (TAB3)
|
|
|
1585 if ((tty.main.c_oflag & TABDLY) == TAB3)
|
|
|
1586 tty.main.c_oflag &= ~TABDLY; /* Disable tab expansion (Posix). */
|
|
|
1587 #elif defined (OXTABS)
|
|
|
1588 tty.main.c_oflag &= ~OXTABS; /* Disable tab expansion (BSD). */
|
|
|
1589 #endif
|
|
|
1590 #endif /* 0 */
|
|
|
1591
|
|
428
|
1592 #ifdef CS8
|
|
|
1593 if (TTY_FLAGS (con).meta_key)
|
|
|
1594 {
|
|
|
1595 tty.main.c_cflag |= CS8; /* allow 8th bit on input */
|
|
|
1596 tty.main.c_cflag &= ~PARENB;/* Don't check parity */
|
|
|
1597 }
|
|
|
1598 #endif
|
|
|
1599 if (CONSOLE_TTY_DATA (con)->controlling_terminal)
|
|
|
1600 {
|
|
1204
|
1601 tty.main.c_cc[VINTR] = /* C-g (usually) gives SIGINT */
|
|
|
1602 event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1, 0);
|
|
428
|
1603 /* Set up C-g for both SIGQUIT and SIGINT.
|
|
|
1604 We don't know which we will get, but we handle both alike
|
|
|
1605 so which one it really gives us does not matter. */
|
|
1204
|
1606 tty.main.c_cc[VQUIT] = tty.main.c_cc[VINTR];
|
|
428
|
1607 }
|
|
|
1608 else
|
|
|
1609 {
|
|
|
1610 tty.main.c_cc[VINTR] = _POSIX_VDISABLE;
|
|
|
1611 tty.main.c_cc[VQUIT] = _POSIX_VDISABLE;
|
|
|
1612 }
|
|
|
1613 tty.main.c_cc[VMIN] = 1; /* Input should wait for at
|
|
|
1614 least 1 char */
|
|
|
1615 tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */
|
|
|
1616 #ifdef VSWTCH
|
|
|
1617 tty.main.c_cc[VSWTCH] = _POSIX_VDISABLE; /* Turn off shell layering use
|
|
|
1618 of C-z */
|
|
|
1619 #endif /* VSWTCH */
|
|
|
1620 /* There was some conditionalizing here on (mips or TCATTR), but
|
|
|
1621 I think that's wrong. There was one report of C-y (DSUSP) not being
|
|
|
1622 disabled on HP9000s700 systems, and this might fix it. */
|
|
|
1623 #ifdef VSUSP
|
|
|
1624 tty.main.c_cc[VSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-z. */
|
|
|
1625 #endif /* VSUSP */
|
|
|
1626 #ifdef V_DSUSP
|
|
|
1627 tty.main.c_cc[V_DSUSP] = _POSIX_VDISABLE; /* Turn off mips handling of C-y. */
|
|
|
1628 #endif /* V_DSUSP */
|
|
|
1629 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
|
|
|
1630 tty.main.c_cc[VDSUSP] = _POSIX_VDISABLE;
|
|
|
1631 #endif /* VDSUSP */
|
|
|
1632 #ifdef VLNEXT
|
|
|
1633 tty.main.c_cc[VLNEXT] = _POSIX_VDISABLE;
|
|
|
1634 #endif /* VLNEXT */
|
|
|
1635 #ifdef VREPRINT
|
|
|
1636 tty.main.c_cc[VREPRINT] = _POSIX_VDISABLE;
|
|
|
1637 #endif /* VREPRINT */
|
|
|
1638 #ifdef VWERASE
|
|
|
1639 tty.main.c_cc[VWERASE] = _POSIX_VDISABLE;
|
|
|
1640 #endif /* VWERASE */
|
|
|
1641 #ifdef VDISCARD
|
|
|
1642 tty.main.c_cc[VDISCARD] = _POSIX_VDISABLE;
|
|
|
1643 #endif /* VDISCARD */
|
|
|
1644 #ifdef VSTART
|
|
|
1645 tty.main.c_cc[VSTART] = _POSIX_VDISABLE;
|
|
|
1646 #endif /* VSTART */
|
|
|
1647 #ifdef VSTRT
|
|
|
1648 tty.main.c_cc[VSTRT] = _POSIX_VDISABLE; /* called VSTRT on some systems */
|
|
|
1649 #endif /* VSTART */
|
|
|
1650 #ifdef VSTOP
|
|
|
1651 tty.main.c_cc[VSTOP] = _POSIX_VDISABLE;
|
|
|
1652 #endif /* VSTOP */
|
|
|
1653 #ifdef SET_LINE_DISCIPLINE
|
|
|
1654 /* Need to explicitly request TERMIODISC line discipline or
|
|
|
1655 Ultrix's termios does not work correctly. */
|
|
|
1656 tty.main.c_line = SET_LINE_DISCIPLINE;
|
|
|
1657 #endif
|
|
|
1658
|
|
|
1659 #ifdef AIX
|
|
|
1660 #ifndef IBMR2AIX
|
|
|
1661 /* AIX enhanced edit loses NULs, so disable it. */
|
|
|
1662 tty.main.c_line = 0;
|
|
|
1663 tty.main.c_iflag &= ~ASCEDIT;
|
|
|
1664 #else
|
|
|
1665 tty.main.c_cc[VSTRT] = 255;
|
|
|
1666 tty.main.c_cc[VSTOP] = 255;
|
|
|
1667 tty.main.c_cc[VSUSP] = 255;
|
|
|
1668 tty.main.c_cc[VDSUSP] = 255;
|
|
|
1669 #endif /* IBMR2AIX */
|
|
|
1670 /* Also, PTY overloads NUL and BREAK.
|
|
|
1671 don't ignore break, but don't signal either, so it looks like NUL.
|
|
|
1672 This really serves a purpose only if running in an XTERM window
|
|
|
1673 or via TELNET or the like, but does no harm elsewhere. */
|
|
|
1674 tty.main.c_iflag &= ~IGNBRK;
|
|
|
1675 tty.main.c_iflag &= ~BRKINT;
|
|
|
1676 #endif /* AIX */
|
|
|
1677 #else /* if not HAVE_TERMIO */
|
|
|
1678 con->tty_erase_char = make_char (tty.main.sg_erase);
|
|
|
1679 tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS);
|
|
|
1680 if (TTY_FLAGS (con).meta_key)
|
|
|
1681 tty.main.sg_flags |= ANYP;
|
|
|
1682 /* #### should we be using RAW mode here? */
|
|
|
1683 tty.main.sg_flags |= /* interrupt_input ? RAW : */ CBREAK;
|
|
|
1684 #endif /* not HAVE_TERMIO */
|
|
|
1685
|
|
|
1686 /* If going to use CBREAK mode, we must request C-g to interrupt
|
|
|
1687 and turn off start and stop chars, etc. If not going to use
|
|
|
1688 CBREAK mode, do this anyway so as to turn off local flow
|
|
|
1689 control for user coming over network on 4.2; in this case,
|
|
|
1690 only t_stopc and t_startc really matter. */
|
|
|
1691 #ifndef HAVE_TERMIO
|
|
|
1692 #ifdef HAVE_TCHARS
|
|
|
1693 /* Note: if not using CBREAK mode, it makes no difference how we
|
|
|
1694 set this */
|
|
|
1695 tty.tchars = new_tchars;
|
|
1204
|
1696 tty.tchars.t_intrc = event_to_character (CONSOLE_QUIT_EVENT (con), 0, 1, 0);
|
|
428
|
1697 if (TTY_FLAGS (con).flow_control)
|
|
|
1698 {
|
|
|
1699 tty.tchars.t_startc = '\021';
|
|
|
1700 tty.tchars.t_stopc = '\023';
|
|
|
1701 }
|
|
|
1702
|
|
|
1703 tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH |
|
|
|
1704 CONSOLE_TTY_DATA (con)->old_tty.lmode;
|
|
|
1705
|
|
|
1706 #if defined (ultrix) || defined (__bsdi__)
|
|
|
1707 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
|
|
|
1708 anything, and leaving it in breaks the meta key. Go figure. */
|
|
|
1709 /* Turning off ONLCR is enough under BSD/386. Leave the general
|
|
|
1710 output post-processing flag alone since for some reason it
|
|
|
1711 doesn't get reset after XEmacs goes away. */
|
|
|
1712 tty.lmode &= ~LLITOUT;
|
|
|
1713 #endif
|
|
|
1714
|
|
|
1715 #endif /* HAVE_TCHARS */
|
|
|
1716 #endif /* not HAVE_TERMIO */
|
|
|
1717
|
|
|
1718 #ifdef HAVE_LTCHARS
|
|
|
1719 tty.ltchars = new_ltchars;
|
|
|
1720 #endif /* HAVE_LTCHARS */
|
|
|
1721
|
|
430
|
1722 emacs_set_tty (input_fd, &tty, 0);
|
|
428
|
1723
|
|
|
1724 /* This code added to insure that, if flow-control is not to be used,
|
|
|
1725 we have an unlocked terminal at the start. */
|
|
|
1726
|
|
|
1727 #ifdef TCXONC
|
|
|
1728 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TCXONC, 1);
|
|
|
1729 #endif
|
|
|
1730 #ifdef TIOCSTART
|
|
|
1731 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TIOCSTART, 0);
|
|
|
1732 #endif
|
|
|
1733
|
|
|
1734 #if defined (HAVE_TERMIOS) || defined (HPUX9)
|
|
|
1735 #ifdef TCOON
|
|
|
1736 if (!TTY_FLAGS (con).flow_control) tcflow (input_fd, TCOON);
|
|
|
1737 #endif
|
|
|
1738 #endif
|
|
|
1739 #ifdef AIXHFT
|
|
|
1740 hft_init (con);
|
|
|
1741 #ifdef IBMR2AIX
|
|
|
1742 {
|
|
|
1743 /* IBM's HFT device usually thinks a ^J should be LF/CR.
|
|
|
1744 We need it to be only LF. This is the way that is
|
|
|
1745 done. */
|
|
|
1746 struct termio tty;
|
|
|
1747
|
|
|
1748 if (ioctl (output_fd, HFTGETID, &tty) != -1)
|
|
771
|
1749 retry_write (output_fd, "\033[20l", 5);
|
|
428
|
1750 }
|
|
|
1751 #endif
|
|
|
1752 #endif
|
|
|
1753
|
|
|
1754 #if 0 /* We do our own buffering with lstreams. */
|
|
|
1755 #ifdef _IOFBF
|
|
|
1756 /* This symbol is defined on recent USG systems.
|
|
|
1757 Someone says without this call USG won't really buffer the file
|
|
|
1758 even with a call to setbuf. */
|
|
647
|
1759 setvbuf (CONSOLE_TTY_DATA (con)->outfd, (char *) _sobuf, _IOFBF,
|
|
|
1760 sizeof (_sobuf));
|
|
428
|
1761 #else
|
|
|
1762 setbuf (CONSOLE_TTY_DATA (con)->outfd, (char *) _sobuf);
|
|
|
1763 #endif
|
|
|
1764 #endif
|
|
|
1765 set_tty_modes (con);
|
|
|
1766 }
|
|
|
1767
|
|
|
1768 #endif /* HAVE_TTY */
|
|
|
1769
|
|
|
1770 void
|
|
2340
|
1771 init_one_device (
|
|
|
1772 #if defined(HAVE_TTY) || (defined(SIGIO) && !defined(BROKEN_SIGIO))
|
|
|
1773 struct device *d
|
|
|
1774 #else
|
|
|
1775 struct device *UNUSED (d)
|
|
|
1776 #endif
|
|
|
1777 )
|
|
428
|
1778 {
|
|
|
1779 #ifdef HAVE_TTY
|
|
|
1780 if (DEVICE_TTY_P (d))
|
|
|
1781 tty_init_sys_modes_on_device (d);
|
|
|
1782 #endif
|
|
|
1783 #if defined(SIGIO) && !defined(BROKEN_SIGIO)
|
|
|
1784 if (!DEVICE_STREAM_P (d))
|
|
|
1785 {
|
|
|
1786 init_sigio_on_device (d);
|
|
|
1787 request_sigio_on_device (d);
|
|
|
1788 }
|
|
|
1789 #endif
|
|
|
1790 }
|
|
|
1791
|
|
|
1792 void
|
|
|
1793 init_one_console (struct console *con)
|
|
|
1794 {
|
|
|
1795 Lisp_Object devcons;
|
|
|
1796
|
|
|
1797 CONSOLE_DEVICE_LOOP (devcons, con)
|
|
|
1798 {
|
|
|
1799 struct device *d = XDEVICE (XCAR (devcons));
|
|
|
1800
|
|
|
1801 init_one_device (d);
|
|
|
1802 }
|
|
|
1803 }
|
|
|
1804
|
|
|
1805 void
|
|
|
1806 reinit_initial_console (void)
|
|
|
1807 {
|
|
|
1808 munge_process_groups ();
|
|
|
1809 if (CONSOLEP (Vcontrolling_terminal) &&
|
|
|
1810 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
|
|
|
1811 init_one_console (XCONSOLE (Vcontrolling_terminal));
|
|
|
1812 }
|
|
|
1813
|
|
|
1814
|
|
|
1815 /* ------------------------------------------------------ */
|
|
|
1816 /* Other TTY functions */
|
|
|
1817 /* ------------------------------------------------------ */
|
|
|
1818
|
|
|
1819 #ifdef HAVE_TTY
|
|
|
1820
|
|
|
1821 #if 0 /* not currently used */
|
|
|
1822
|
|
|
1823 /* Return nonzero if safe to use tabs in output.
|
|
|
1824 At the time this is called, init_sys_modes has not been done yet. */
|
|
|
1825
|
|
|
1826 int
|
|
2340
|
1827 tabs_safe_p (struct device *USED_IF_TTY (d))
|
|
428
|
1828 {
|
|
|
1829 #ifdef HAVE_TTY
|
|
|
1830 if (DEVICE_TTY_P (d))
|
|
|
1831 {
|
|
|
1832 struct emacs_tty tty;
|
|
|
1833
|
|
430
|
1834 emacs_get_tty (DEVICE_INFD (d), &tty);
|
|
428
|
1835 return EMACS_TTY_TABS_OK (&tty);
|
|
|
1836 }
|
|
|
1837 #endif
|
|
|
1838 return 1;
|
|
|
1839 }
|
|
|
1840
|
|
|
1841 #endif /* 0 */
|
|
|
1842
|
|
|
1843 /* Get terminal size from system.
|
|
|
1844 Store number of lines into *heightp and width into *widthp.
|
|
|
1845 If zero or a negative number is stored, the value is not valid. */
|
|
|
1846
|
|
|
1847 void
|
|
|
1848 get_tty_device_size (struct device *d, int *widthp, int *heightp)
|
|
|
1849 {
|
|
|
1850 int input_fd = DEVICE_INFD (d);
|
|
|
1851
|
|
|
1852 assert (DEVICE_TTY_P (d));
|
|
|
1853
|
|
|
1854 #ifdef TIOCGWINSZ
|
|
|
1855 {
|
|
|
1856 /* BSD-style. */
|
|
|
1857 struct winsize size;
|
|
|
1858
|
|
|
1859 if (ioctl (input_fd, TIOCGWINSZ, &size) == -1)
|
|
|
1860 *widthp = *heightp = 0;
|
|
|
1861 else
|
|
|
1862 {
|
|
|
1863 *widthp = size.ws_col;
|
|
|
1864 *heightp = size.ws_row;
|
|
|
1865 }
|
|
|
1866 }
|
|
|
1867 #elif defined TIOCGSIZE
|
|
|
1868 {
|
|
|
1869 /* SunOS - style. */
|
|
|
1870 struct ttysize size;
|
|
|
1871
|
|
|
1872 if (ioctl (input_fd, TIOCGSIZE, &size) == -1)
|
|
|
1873 *widthp = *heightp = 0;
|
|
|
1874 else
|
|
|
1875 {
|
|
|
1876 *widthp = size.ts_cols;
|
|
|
1877 *heightp = size.ts_lines;
|
|
|
1878 }
|
|
|
1879 }
|
|
|
1880 #else /* system doesn't know size */
|
|
|
1881
|
|
|
1882 *widthp = 0;
|
|
|
1883 *heightp = 0;
|
|
|
1884
|
|
|
1885 #endif /* not !TIOCGWINSZ */
|
|
|
1886 }
|
|
|
1887
|
|
|
1888 #endif /* HAVE_TTY */
|
|
|
1889
|
|
|
1890
|
|
|
1891 /* ------------------------------------------------------ */
|
|
|
1892 /* Is device 8 bit ? */
|
|
|
1893 /* ------------------------------------------------------ */
|
|
|
1894
|
|
|
1895 #ifdef HAVE_TTY
|
|
|
1896
|
|
|
1897 int
|
|
|
1898 eight_bit_tty (struct device *d)
|
|
|
1899 {
|
|
|
1900 struct emacs_tty s;
|
|
|
1901 int input_fd;
|
|
|
1902 int eight_bit = 0;
|
|
|
1903
|
|
|
1904 assert (DEVICE_TTY_P (d));
|
|
|
1905 input_fd = DEVICE_INFD (d);
|
|
|
1906
|
|
430
|
1907 emacs_get_tty (input_fd, &s);
|
|
428
|
1908
|
|
|
1909 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
|
|
|
1910 eight_bit = (s.main.c_cflag & CSIZE) == CS8;
|
|
|
1911 #else
|
|
|
1912 eight_bit = 0; /* I don't know how to do it */
|
|
|
1913 #endif
|
|
|
1914 return eight_bit;
|
|
|
1915 }
|
|
|
1916
|
|
|
1917 #endif /* HAVE_TTY */
|
|
|
1918
|
|
|
1919
|
|
|
1920 /* ------------------------------------------------------ */
|
|
|
1921 /* Resetting a device */
|
|
|
1922 /* ------------------------------------------------------ */
|
|
|
1923
|
|
|
1924 #ifdef HAVE_TTY
|
|
|
1925
|
|
|
1926 /* Prepare the terminal for exiting Emacs; move the cursor to the
|
|
|
1927 bottom of the frame, turn off interrupt-driven I/O, etc. */
|
|
|
1928 static void
|
|
|
1929 tty_reset_sys_modes_on_device (struct device *d)
|
|
|
1930 {
|
|
2286
|
1931 #if defined (BSD) || (defined (IBMR2AIX) && defined (AIXHFT))
|
|
|
1932 int output_fd;
|
|
|
1933 #endif
|
|
|
1934 int input_fd;
|
|
428
|
1935 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
|
|
|
1936
|
|
|
1937 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
2286
|
1938 #if defined (BSD) || (defined (IBMR2AIX) && defined (AIXHFT))
|
|
428
|
1939 output_fd = CONSOLE_TTY_DATA (con)->outfd;
|
|
2286
|
1940 #endif
|
|
428
|
1941
|
|
|
1942 #if defined (IBMR2AIX) && defined (AIXHFT)
|
|
|
1943 {
|
|
|
1944 /* HFT consoles normally use ^J as a LF/CR. We forced it to
|
|
|
1945 do the LF only. Now, we need to reset it. */
|
|
|
1946 struct termio tty;
|
|
|
1947
|
|
|
1948 if (ioctl (output_fd, HFTGETID, &tty) != -1)
|
|
771
|
1949 retry_write (output_fd, "\033[20h", 5);
|
|
428
|
1950 }
|
|
|
1951 #endif
|
|
|
1952
|
|
|
1953 tty_redisplay_shutdown (con);
|
|
|
1954 /* reset_tty_modes() flushes the connection at its end. */
|
|
|
1955 reset_tty_modes (con);
|
|
|
1956
|
|
|
1957 #if defined (BSD)
|
|
|
1958 /* Avoid possible loss of output when changing terminal modes. */
|
|
|
1959 fsync (output_fd);
|
|
|
1960 #endif
|
|
|
1961
|
|
430
|
1962 while (emacs_set_tty (input_fd, &CONSOLE_TTY_DATA (con)->old_tty, 0)
|
|
428
|
1963 < 0 && errno == EINTR)
|
|
|
1964 ;
|
|
|
1965
|
|
|
1966 #ifdef SET_LINE_DISCIPLINE
|
|
|
1967 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
|
|
|
1968 A different old line discipline is therefore not restored, yet.
|
|
|
1969 Restore the old line discipline by hand. */
|
|
|
1970 ioctl (input_fd, TIOCSETD, &old_tty.main.c_line);
|
|
|
1971 #endif
|
|
|
1972
|
|
|
1973 #ifdef AIXHFT
|
|
|
1974 hft_reset (con);
|
|
|
1975 #endif
|
|
|
1976
|
|
|
1977 }
|
|
|
1978
|
|
|
1979 #endif /* HAVE_TTY */
|
|
|
1980
|
|
|
1981 void
|
|
|
1982 reset_one_device (struct device *d)
|
|
|
1983 {
|
|
|
1984 #ifdef HAVE_TTY
|
|
|
1985 if (DEVICE_TTY_P (d))
|
|
|
1986 tty_reset_sys_modes_on_device (d);
|
|
|
1987 else
|
|
|
1988 #endif
|
|
|
1989 if (DEVICE_STREAM_P (d))
|
|
|
1990 fflush (CONSOLE_STREAM_DATA (XCONSOLE (DEVICE_CONSOLE (d)))->out);
|
|
|
1991 #if defined(SIGIO) && !defined(BROKEN_SIGIO)
|
|
|
1992 if (!DEVICE_STREAM_P (d))
|
|
|
1993 {
|
|
|
1994 unrequest_sigio_on_device (d);
|
|
|
1995 reset_sigio_on_device (d);
|
|
|
1996 }
|
|
|
1997 #endif
|
|
|
1998 }
|
|
|
1999
|
|
|
2000 void
|
|
|
2001 reset_one_console (struct console *con)
|
|
|
2002 {
|
|
|
2003 /* Note: this can be called during GC. */
|
|
|
2004 Lisp_Object devcons;
|
|
|
2005
|
|
|
2006 CONSOLE_DEVICE_LOOP (devcons, con)
|
|
|
2007 {
|
|
|
2008 struct device *d = XDEVICE (XCAR (devcons));
|
|
|
2009
|
|
|
2010 reset_one_device (d);
|
|
|
2011 }
|
|
|
2012 }
|
|
|
2013
|
|
|
2014 void
|
|
|
2015 reset_all_consoles (void)
|
|
|
2016 {
|
|
|
2017 /* Note: this can be called during GC. */
|
|
|
2018 Lisp_Object concons;
|
|
|
2019
|
|
|
2020 CONSOLE_LOOP (concons)
|
|
|
2021 {
|
|
|
2022 struct console *con = XCONSOLE (XCAR (concons));
|
|
|
2023
|
|
|
2024 reset_one_console (con);
|
|
|
2025 }
|
|
|
2026
|
|
|
2027 unmunge_process_groups ();
|
|
|
2028 }
|
|
|
2029
|
|
|
2030 void
|
|
|
2031 reset_initial_console (void)
|
|
|
2032 {
|
|
|
2033 if (CONSOLEP (Vcontrolling_terminal) &&
|
|
|
2034 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
|
|
|
2035 reset_one_console (XCONSOLE (Vcontrolling_terminal));
|
|
|
2036 unmunge_process_groups ();
|
|
|
2037 }
|
|
|
2038
|
|
|
2039
|
|
|
2040 /* ------------------------------------------------------ */
|
|
|
2041 /* extra TTY stuff under AIX */
|
|
|
2042 /* ------------------------------------------------------ */
|
|
|
2043
|
|
|
2044 #ifdef AIXHFT
|
|
|
2045
|
|
|
2046 /* Called from init_sys_modes. */
|
|
|
2047 static void
|
|
|
2048 hft_init (struct console *con)
|
|
|
2049 {
|
|
|
2050 int junk;
|
|
|
2051 int input_fd;
|
|
|
2052
|
|
|
2053 assert (CONSOLE_TTY_P (con));
|
|
|
2054 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
|
2055
|
|
|
2056 /* If we're not on an HFT we shouldn't do any of this. We determine
|
|
|
2057 if we are on an HFT by trying to get an HFT error code. If this
|
|
|
2058 call fails, we're not on an HFT. */
|
|
|
2059 #ifdef IBMR2AIX
|
|
|
2060 if (ioctl (input_fd, HFQERROR, &junk) < 0)
|
|
|
2061 return;
|
|
|
2062 #else /* not IBMR2AIX */
|
|
|
2063 if (ioctl (input_fd, HFQEIO, 0) < 0)
|
|
|
2064 return;
|
|
|
2065 #endif /* not IBMR2AIX */
|
|
|
2066
|
|
|
2067 /* On AIX the default hft keyboard mapping uses backspace rather than delete
|
|
|
2068 as the rubout key's ASCII code. Here this is changed. The bug is that
|
|
|
2069 there's no way to determine the old mapping, so in reset_one_console
|
|
|
2070 we need to assume that the normal map had been present. Of course, this
|
|
|
2071 code also doesn't help if on a terminal emulator which doesn't understand
|
|
|
2072 HFT VTD's. */
|
|
|
2073 {
|
|
|
2074 struct hfbuf buf;
|
|
|
2075 struct hfkeymap keymap;
|
|
|
2076
|
|
|
2077 buf.hf_bufp = (char *)&keymap;
|
|
|
2078 buf.hf_buflen = sizeof (keymap);
|
|
|
2079 keymap.hf_nkeys = 2;
|
|
|
2080 keymap.hfkey[0].hf_kpos = 15;
|
|
|
2081 keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE;
|
|
|
2082 #ifdef IBMR2AIX
|
|
|
2083 keymap.hfkey[0].hf_keyidh = '<';
|
|
|
2084 #else /* not IBMR2AIX */
|
|
|
2085 keymap.hfkey[0].hf_page = '<';
|
|
|
2086 #endif /* not IBMR2AIX */
|
|
|
2087 keymap.hfkey[0].hf_char = 127;
|
|
|
2088 keymap.hfkey[1].hf_kpos = 15;
|
|
|
2089 keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT;
|
|
|
2090 #ifdef IBMR2AIX
|
|
|
2091 keymap.hfkey[1].hf_keyidh = '<';
|
|
|
2092 #else /* not IBMR2AIX */
|
|
|
2093 keymap.hfkey[1].hf_page = '<';
|
|
|
2094 #endif /* not IBMR2AIX */
|
|
|
2095 keymap.hfkey[1].hf_char = 127;
|
|
|
2096 hftctl (input_fd, HFSKBD, &buf);
|
|
|
2097 }
|
|
|
2098 /* #### Should probably set a console TTY flag here. */
|
|
|
2099 #if 0
|
|
|
2100 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
|
|
|
2101 at times. */
|
|
|
2102 line_ins_del_ok = char_ins_del_ok = 0;
|
|
|
2103 #endif /* 0 */
|
|
|
2104 }
|
|
|
2105
|
|
|
2106 /* Reset the rubout key to backspace. */
|
|
|
2107
|
|
|
2108 static void
|
|
|
2109 hft_reset (struct console *con)
|
|
|
2110 {
|
|
|
2111 struct hfbuf buf;
|
|
|
2112 struct hfkeymap keymap;
|
|
|
2113 int junk;
|
|
|
2114 int input_fd;
|
|
|
2115
|
|
|
2116 assert (CONSOLE_TTY_P (con));
|
|
|
2117 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
|
2118
|
|
|
2119 #ifdef IBMR2AIX
|
|
|
2120 if (ioctl (input_fd, HFQERROR, &junk) < 0)
|
|
|
2121 return;
|
|
|
2122 #else /* not IBMR2AIX */
|
|
|
2123 if (ioctl (input_fd, HFQEIO, 0) < 0)
|
|
|
2124 return;
|
|
|
2125 #endif /* not IBMR2AIX */
|
|
|
2126
|
|
|
2127 buf.hf_bufp = (char *)&keymap;
|
|
|
2128 buf.hf_buflen = sizeof (keymap);
|
|
|
2129 keymap.hf_nkeys = 2;
|
|
|
2130 keymap.hfkey[0].hf_kpos = 15;
|
|
|
2131 keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE;
|
|
|
2132 #ifdef IBMR2AIX
|
|
|
2133 keymap.hfkey[0].hf_keyidh = '<';
|
|
|
2134 #else /* not IBMR2AIX */
|
|
|
2135 keymap.hfkey[0].hf_page = '<';
|
|
|
2136 #endif /* not IBMR2AIX */
|
|
|
2137 keymap.hfkey[0].hf_char = 8;
|
|
|
2138 keymap.hfkey[1].hf_kpos = 15;
|
|
|
2139 keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT;
|
|
|
2140 #ifdef IBMR2AIX
|
|
|
2141 keymap.hfkey[1].hf_keyidh = '<';
|
|
|
2142 #else /* not IBMR2AIX */
|
|
|
2143 keymap.hfkey[1].hf_page = '<';
|
|
|
2144 #endif /* not IBMR2AIX */
|
|
|
2145 keymap.hfkey[1].hf_char = 8;
|
|
|
2146 hftctl (input_fd, HFSKBD, &buf);
|
|
|
2147 }
|
|
|
2148
|
|
|
2149 #endif /* AIXHFT */
|
|
|
2150
|
|
|
2151
|
|
|
2152 /************************************************************************/
|
|
|
2153 /* limits of text/data segments */
|
|
|
2154 /************************************************************************/
|
|
|
2155
|
|
801
|
2156 /* Need start_of_data() as much as possible now, for total_data_usage();
|
|
|
2157 but with PDUMP and WIN32_NATIVE, can't currently do it. */
|
|
1330
|
2158 #if ! (defined (PDUMP) && defined (WIN32_NATIVE) && defined (SYSTEM_MALLOC))
|
|
428
|
2159 #define NEED_STARTS
|
|
|
2160 #endif
|
|
|
2161
|
|
|
2162 #ifdef NEED_STARTS
|
|
|
2163 /* Some systems that cannot dump also cannot implement these. */
|
|
|
2164
|
|
|
2165 /*
|
|
|
2166 * Return the address of the start of the text segment prior to
|
|
|
2167 * doing an unexec. After unexec the return value is undefined.
|
|
|
2168 * See crt0.c for further explanation and _start.
|
|
|
2169 *
|
|
|
2170 */
|
|
|
2171
|
|
801
|
2172 #if !defined (HAVE_TEXT_START) && !defined (PDUMP)
|
|
440
|
2173
|
|
442
|
2174 EXTERN_C int _start (void);
|
|
428
|
2175
|
|
|
2176 char *
|
|
|
2177 start_of_text (void)
|
|
|
2178 {
|
|
|
2179 #ifdef TEXT_START
|
|
442
|
2180 return (char *) TEXT_START;
|
|
428
|
2181 #else
|
|
442
|
2182 return (char *) _start;
|
|
428
|
2183 #endif /* TEXT_START */
|
|
|
2184 }
|
|
440
|
2185 #endif /* !defined(HAVE_TEXT_START) && !defined(PDUMP) */
|
|
428
|
2186
|
|
|
2187 /*
|
|
|
2188 * Return the address of the start of the data segment prior to
|
|
|
2189 * doing an unexec. After unexec the return value is undefined.
|
|
442
|
2190 * See ecrt0.c for further information and definition of data_start.
|
|
428
|
2191 *
|
|
|
2192 * Apparently, on BSD systems this is etext at startup. On
|
|
|
2193 * USG systems (swapping) this is highly mmu dependent and
|
|
|
2194 * is also dependent on whether or not the program is running
|
|
|
2195 * with shared text. Generally there is a (possibly large)
|
|
|
2196 * gap between end of text and start of data with shared text.
|
|
|
2197 *
|
|
|
2198 * On Uniplus+ systems with shared text, data starts at a
|
|
|
2199 * fixed address. Each port (from a given oem) is generally
|
|
|
2200 * different, and the specific value of the start of data can
|
|
|
2201 * be obtained via the UniPlus+ specific "uvar" system call,
|
|
|
2202 * however the method outlined in crt0.c seems to be more portable.
|
|
|
2203 *
|
|
|
2204 * Probably what will have to happen when a USG unexec is available,
|
|
|
2205 * at least on UniPlus, is temacs will have to be made unshared so
|
|
|
2206 * that text and data are contiguous. Then once loadup is complete,
|
|
|
2207 * unexec will produce a shared executable where the data can be
|
|
|
2208 * at the normal shared text boundary and the startofdata variable
|
|
|
2209 * will be patched by unexec to the correct value.
|
|
|
2210 *
|
|
|
2211 */
|
|
|
2212
|
|
801
|
2213 #if defined (ORDINARY_LINK) && !defined (MINGW)
|
|
428
|
2214 extern char **environ;
|
|
|
2215 #endif
|
|
|
2216
|
|
|
2217 void *
|
|
|
2218 start_of_data (void)
|
|
|
2219 {
|
|
|
2220 #ifdef DATA_START
|
|
|
2221 return ((char *) DATA_START);
|
|
|
2222 #else
|
|
452
|
2223 #if defined (ORDINARY_LINK) || defined(PDUMP)
|
|
428
|
2224 /*
|
|
|
2225 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
|
|
|
2226 * data_start isn't defined. We take the address of environ, which
|
|
|
2227 * is known to live at or near the start of the system crt0.c, and
|
|
|
2228 * we don't sweat the handful of bytes that might lose.
|
|
|
2229 */
|
|
442
|
2230 #if defined (HEAP_IN_DATA) && !defined(PDUMP)
|
|
428
|
2231 extern char* static_heap_base;
|
|
|
2232 if (!initialized)
|
|
|
2233 return static_heap_base;
|
|
|
2234 #endif
|
|
801
|
2235 return ((char *) &environ);
|
|
428
|
2236 #else
|
|
|
2237 extern int data_start;
|
|
|
2238 return ((char *) &data_start);
|
|
|
2239 #endif /* ORDINARY_LINK */
|
|
|
2240 #endif /* DATA_START */
|
|
|
2241 }
|
|
1330
|
2242 #endif /* NEED_STARTS aka !(PDUMP && WIN32_NATIVE && SYSTEM_MALLOC) */
|
|
428
|
2243
|
|
801
|
2244 extern void *minimum_address_seen; /* from xmalloc() */
|
|
|
2245 extern void *maximum_address_seen; /* from xmalloc() */
|
|
|
2246
|
|
|
2247 Bytecount
|
|
|
2248 total_data_usage (void)
|
|
|
2249 {
|
|
|
2250 #ifdef NEED_STARTS
|
|
|
2251 void *data_start = start_of_data ();
|
|
|
2252 #else
|
|
|
2253 void *data_start = minimum_address_seen;
|
|
|
2254 #endif
|
|
854
|
2255
|
|
1315
|
2256 #ifndef WIN32_ANY
|
|
814
|
2257 void *data_end = sbrk (0);
|
|
801
|
2258 #else
|
|
|
2259 void *data_end = maximum_address_seen;
|
|
|
2260 #endif
|
|
|
2261
|
|
|
2262 /* Sanity checking -- the min determined by malloc() should always be
|
|
|
2263 greater than data start determined by other means. We could do the
|
|
|
2264 same check on the max, except that things like rel-alloc might
|
|
|
2265 invalidate it. */
|
|
|
2266 if (minimum_address_seen &&
|
|
|
2267 (char *) minimum_address_seen < (char *) data_start)
|
|
|
2268 data_start = minimum_address_seen;
|
|
|
2269
|
|
|
2270 if (data_end < data_start) /* Huh?????????? */
|
|
|
2271 data_end = maximum_address_seen;
|
|
|
2272
|
|
|
2273 /* #### Doesn't seem to give good results on Windows; values are much
|
|
|
2274 higher than actual memory usage. How to fix??? */
|
|
|
2275 return (char *) data_end - (char *) data_start;
|
|
|
2276 }
|
|
|
2277
|
|
428
|
2278
|
|
|
2279 /************************************************************************/
|
|
|
2280 /* get the system name */
|
|
|
2281 /************************************************************************/
|
|
|
2282
|
|
|
2283 /* init_system_name sets up the string for the Lisp function
|
|
|
2284 system-name to return. */
|
|
|
2285
|
|
|
2286 extern Lisp_Object Vsystem_name;
|
|
|
2287
|
|
|
2288 void
|
|
|
2289 init_system_name (void)
|
|
|
2290 {
|
|
442
|
2291 #if defined (WIN32_NATIVE)
|
|
771
|
2292 Extbyte hostname[MAX_XETCHAR_SIZE * (MAX_COMPUTERNAME_LENGTH + 1)];
|
|
|
2293 DWORD size = sizeof (hostname) / XETCHAR_SIZE;
|
|
|
2294 qxeGetComputerName (hostname, &size);
|
|
|
2295 Vsystem_name = build_tstr_string (hostname);
|
|
428
|
2296 #elif !defined (HAVE_GETHOSTNAME)
|
|
|
2297 struct utsname uts;
|
|
|
2298 uname (&uts);
|
|
|
2299 Vsystem_name = build_string (uts.nodename);
|
|
|
2300 #else /* HAVE_GETHOSTNAME */
|
|
647
|
2301 int hostname_size = 256;
|
|
2367
|
2302 /* !!#### Needs review */
|
|
851
|
2303 char *hostname = (char *) ALLOCA (hostname_size);
|
|
428
|
2304
|
|
|
2305 /* Try to get the host name; if the buffer is too short, try
|
|
|
2306 again. Apparently, the only indication gethostname gives of
|
|
|
2307 whether the buffer was large enough is the presence or absence
|
|
|
2308 of a '\0' in the string. Eech. */
|
|
|
2309 for (;;)
|
|
|
2310 {
|
|
|
2311 gethostname (hostname, hostname_size - 1);
|
|
|
2312 hostname[hostname_size - 1] = '\0';
|
|
|
2313
|
|
|
2314 /* Was the buffer large enough for the '\0'? */
|
|
647
|
2315 if ((int) strlen (hostname) < (hostname_size - 1))
|
|
428
|
2316 break;
|
|
|
2317
|
|
|
2318 hostname_size <<= 1;
|
|
2367
|
2319 /* !!#### Needs review */
|
|
851
|
2320 hostname = (char *) ALLOCA (hostname_size);
|
|
428
|
2321 }
|
|
558
|
2322 # if defined( HAVE_SOCKETS)
|
|
428
|
2323 /* Turn the hostname into the official, fully-qualified hostname.
|
|
|
2324 Don't do this if we're going to dump; this can confuse system
|
|
|
2325 libraries on some machines and make the dumped emacs core dump. */
|
|
|
2326 if (initialized)
|
|
|
2327 if (!strchr (hostname, '.'))
|
|
|
2328 {
|
|
440
|
2329 # if !(defined(HAVE_GETADDRINFO) && defined(HAVE_GETNAMEINFO))
|
|
428
|
2330 struct hostent *hp = NULL;
|
|
|
2331 int count;
|
|
440
|
2332 # ifdef TRY_AGAIN
|
|
428
|
2333 for (count = 0; count < 10; count++)
|
|
|
2334 {
|
|
|
2335 h_errno = 0;
|
|
440
|
2336 # endif
|
|
428
|
2337 /* Some systems can't handle SIGALARM/SIGIO in gethostbyname(). */
|
|
|
2338 stop_interrupts ();
|
|
|
2339 hp = gethostbyname (hostname);
|
|
|
2340 start_interrupts ();
|
|
440
|
2341 # ifdef TRY_AGAIN
|
|
428
|
2342 if (! (hp == 0 && h_errno == TRY_AGAIN))
|
|
|
2343 break;
|
|
|
2344 Fsleep_for (make_int (1));
|
|
|
2345 }
|
|
440
|
2346 # endif
|
|
428
|
2347 if (hp)
|
|
|
2348 {
|
|
442
|
2349 const char *fqdn = (const char *) hp->h_name;
|
|
428
|
2350
|
|
|
2351 if (!strchr (fqdn, '.'))
|
|
|
2352 {
|
|
|
2353 /* We still don't have a fully qualified domain name.
|
|
|
2354 Try to find one in the list of alternate names */
|
|
|
2355 char **alias = hp->h_aliases;
|
|
|
2356 while (*alias && !strchr (*alias, '.'))
|
|
|
2357 alias++;
|
|
|
2358 if (*alias)
|
|
|
2359 fqdn = *alias;
|
|
|
2360 }
|
|
2367
|
2361 /* !!#### Needs review */
|
|
851
|
2362 hostname = (char *) ALLOCA (strlen (fqdn) + 1);
|
|
428
|
2363 strcpy (hostname, fqdn);
|
|
|
2364 }
|
|
440
|
2365 # else /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */
|
|
|
2366 struct addrinfo hints, *res;
|
|
|
2367
|
|
|
2368 xzero (hints);
|
|
|
2369 hints.ai_flags = AI_CANONNAME;
|
|
724
|
2370 #ifdef IPV6_CANONICALIZE
|
|
440
|
2371 hints.ai_family = AF_UNSPEC;
|
|
724
|
2372 #else
|
|
|
2373 hints.ai_family = PF_INET;
|
|
|
2374 #endif
|
|
440
|
2375 hints.ai_socktype = SOCK_STREAM;
|
|
|
2376 hints.ai_protocol = 0;
|
|
|
2377 if (!getaddrinfo (hostname, NULL, &hints, &res))
|
|
|
2378 {
|
|
2367
|
2379 /* !!#### Needs review */
|
|
851
|
2380 hostname = (char *) ALLOCA (strlen (res->ai_canonname) + 1);
|
|
440
|
2381 strcpy (hostname, res->ai_canonname);
|
|
|
2382
|
|
|
2383 freeaddrinfo (res);
|
|
|
2384 }
|
|
|
2385 # endif /* !(HAVE_GETADDRINFO && HAVE_GETNAMEINFO) */
|
|
428
|
2386 }
|
|
|
2387 # endif /* HAVE_SOCKETS */
|
|
|
2388 Vsystem_name = build_string (hostname);
|
|
|
2389 #endif /* HAVE_GETHOSTNAME */
|
|
|
2390 {
|
|
867
|
2391 Ibyte *p;
|
|
428
|
2392 Bytecount i;
|
|
|
2393
|
|
|
2394 for (i = 0, p = XSTRING_DATA (Vsystem_name);
|
|
|
2395 i < XSTRING_LENGTH (Vsystem_name);
|
|
|
2396 i++, p++)
|
|
|
2397 {
|
|
|
2398 if (*p == ' ' || *p == '\t')
|
|
|
2399 *p = '-';
|
|
|
2400 }
|
|
|
2401 }
|
|
|
2402 }
|
|
|
2403
|
|
|
2404
|
|
|
2405 /************************************************************************/
|
|
|
2406 /* Emulation of select() */
|
|
|
2407 /************************************************************************/
|
|
|
2408
|
|
|
2409 #ifndef HAVE_SELECT
|
|
|
2410
|
|
|
2411 ERROR: XEmacs requires a working select().
|
|
|
2412
|
|
|
2413 #endif /* not HAVE_SELECT */
|
|
|
2414
|
|
|
2415
|
|
|
2416 /************************************************************************/
|
|
|
2417 /* Emulation of signal stuff */
|
|
|
2418 /************************************************************************/
|
|
|
2419
|
|
|
2420 /* BSD 4.1 crap deleted. 4.2 was released in 1983, for God's sake! I
|
|
|
2421 can't imagine that anyone is actually running that OS any more.
|
|
|
2422 You can't use X under it (I think) because there's no select().
|
|
|
2423 Anyway, the signal stuff has all been changed. If someone wants to
|
|
|
2424 get this stuff working again, look in the FSF Emacs sources. */
|
|
|
2425
|
|
|
2426 /* POSIX signals support - DJB */
|
|
|
2427
|
|
|
2428 #ifdef HAVE_SIGPROCMASK
|
|
|
2429
|
|
|
2430 /* #### Is there any reason this is static global rather than local? */
|
|
|
2431 static struct sigaction new_action, old_action;
|
|
|
2432
|
|
|
2433 signal_handler_t
|
|
613
|
2434 qxe_reliable_signal (int signal_number, signal_handler_t action)
|
|
428
|
2435 {
|
|
|
2436 #if 0
|
|
|
2437
|
|
|
2438 /* XEmacs works better if system calls are *not* restarted.
|
|
|
2439 This allows C-g to interrupt reads and writes, on most systems.
|
|
|
2440
|
|
|
2441 #### Another possibility is to just longjmp() out of the signal
|
|
|
2442 handler. According to W.R. Stevens, this should be OK on all
|
|
|
2443 systems. However, I don't want to deal with the potential
|
|
|
2444 evil ramifications of this at this point. */
|
|
|
2445
|
|
|
2446 #ifdef DGUX
|
|
|
2447 /* This gets us restartable system calls for efficiency.
|
|
|
2448 The "else" code will work as well. */
|
|
|
2449 return (berk_signal (signal_number, action));
|
|
|
2450 #else
|
|
|
2451 sigemptyset (&new_action.sa_mask);
|
|
|
2452 new_action.sa_handler = action;
|
|
|
2453 #if defined (SA_RESTART)
|
|
|
2454 /* Emacs mostly works better with restartable system services. If this
|
|
|
2455 * flag exists, we probably want to turn it on here.
|
|
|
2456 */
|
|
|
2457 new_action.sa_flags = SA_RESTART;
|
|
|
2458 #else
|
|
|
2459 new_action.sa_flags = 0;
|
|
|
2460 #endif
|
|
|
2461 sigaction (signal_number, &new_action, &old_action);
|
|
|
2462 return (old_action.sa_handler);
|
|
|
2463 #endif /* DGUX */
|
|
|
2464
|
|
|
2465 #else /* not 0 */
|
|
|
2466
|
|
|
2467 sigemptyset (&new_action.sa_mask);
|
|
|
2468 new_action.sa_handler = action;
|
|
|
2469 #if defined (SA_INTERRUPT) /* don't restart system calls, under SunOS */
|
|
|
2470 new_action.sa_flags = SA_INTERRUPT;
|
|
|
2471 #else
|
|
|
2472 new_action.sa_flags = 0;
|
|
|
2473 #endif
|
|
|
2474 sigaction (signal_number, &new_action, &old_action);
|
|
|
2475 return (signal_handler_t) (old_action.sa_handler);
|
|
|
2476
|
|
|
2477 #endif /* not 0 */
|
|
|
2478 }
|
|
|
2479
|
|
|
2480 #elif defined (HAVE_SIGBLOCK)
|
|
|
2481
|
|
|
2482 /* We use sigvec() rather than signal() if we have it, because
|
|
|
2483 it lets us specify interruptible system calls. */
|
|
|
2484 signal_handler_t
|
|
613
|
2485 qxe_reliable_signal (int signal_number, signal_handler_t action)
|
|
428
|
2486 {
|
|
|
2487 struct sigvec vec, ovec;
|
|
|
2488
|
|
|
2489 vec.sv_handler = action;
|
|
|
2490 vec.sv_mask = 0;
|
|
|
2491 #ifdef SV_INTERRUPT /* don't restart system calls */
|
|
|
2492 vec.sv_flags = SV_INTERRUPT;
|
|
|
2493 #else
|
|
|
2494 vec.sv_flags = 0;
|
|
|
2495 #endif
|
|
|
2496
|
|
|
2497 sigvec (signal_number, &vec, &ovec);
|
|
|
2498
|
|
|
2499 return (ovec.sv_handler);
|
|
|
2500 }
|
|
|
2501
|
|
|
2502 #endif /* HAVE_SIGBLOCK (HAVE_SIGPROCMASK) */
|
|
|
2503
|
|
|
2504
|
|
|
2505 /************************************************************************/
|
|
|
2506 /* Emulation of strerror() and errno support */
|
|
|
2507 /************************************************************************/
|
|
|
2508
|
|
|
2509 #ifndef HAVE_STRERROR
|
|
|
2510
|
|
|
2511 #if !defined(NeXT) && !defined(__alpha) && !defined(MACH) && !defined(LINUX) && !defined(IRIX) && !defined(__NetBSD__)
|
|
|
2512 /* Linux added here by Raymond L. Toy <toy@alydar.crd.ge.com> for XEmacs. */
|
|
|
2513 /* Irix added here by gparker@sni-usa.com for XEmacs. */
|
|
|
2514 /* NetBSD added here by James R Grinter <jrg@doc.ic.ac.uk> for XEmacs */
|
|
442
|
2515 extern const char *sys_errlist[];
|
|
428
|
2516 extern int sys_nerr;
|
|
|
2517 #endif
|
|
|
2518
|
|
|
2519 #ifdef __NetBSD__
|
|
|
2520 extern char *sys_errlist[];
|
|
|
2521 extern int sys_nerr;
|
|
|
2522 #endif
|
|
|
2523
|
|
|
2524
|
|
442
|
2525 const char *
|
|
428
|
2526 strerror (int errnum)
|
|
|
2527 {
|
|
|
2528 if (errnum >= 0 && errnum < sys_nerr)
|
|
|
2529 return sys_errlist[errnum];
|
|
442
|
2530 return ((const char *) GETTEXT ("Unknown error"));
|
|
428
|
2531 }
|
|
|
2532
|
|
|
2533 #endif /* ! HAVE_STRERROR */
|
|
|
2534
|
|
|
2535
|
|
|
2536 /************************************************************************/
|
|
|
2537 /* Encapsulations of system calls */
|
|
|
2538 /************************************************************************/
|
|
|
2539
|
|
1318
|
2540 /* The documentation in VC++ claims that the pathname library functions
|
|
|
2541 accept strings in the current locale-specific encoding, but that's
|
|
|
2542 false, because they just call the native Win32 routines directly, which
|
|
|
2543 always use the system-default encoding (which is what Qmswindows_tstr
|
|
|
2544 will give us when not XEUNICODE_P). */
|
|
771
|
2545 #ifdef WIN32_NATIVE
|
|
|
2546 #define PATHNAME_CONVERT_OUT(path, pathout) C_STRING_TO_TSTR (path, pathout)
|
|
|
2547 #else
|
|
|
2548 #define PATHNAME_CONVERT_OUT(path, pathout) \
|
|
|
2549 C_STRING_TO_EXTERNAL (path, pathout, Qfile_name)
|
|
|
2550 #endif
|
|
428
|
2551
|
|
|
2552 /***************** low-level calls ****************/
|
|
|
2553
|
|
|
2554 /*
|
|
|
2555 * On USG systems the system calls are INTERRUPTIBLE by signals
|
|
|
2556 * that the user program has elected to catch. Thus the system call
|
|
|
2557 * must be retried in these cases. To handle this without massive
|
|
|
2558 * changes in the source code, we remap the standard system call names
|
|
|
2559 * to names for our own functions in sysdep.c that do the system call
|
|
|
2560 * with retries. Actually, for portability reasons, it is good
|
|
|
2561 * programming practice, as this example shows, to limit all actual
|
|
|
2562 * system calls to a single occurrence in the source. Sure, this
|
|
|
2563 * adds an extra level of function call overhead but it is almost
|
|
|
2564 * always negligible. Fred Fish, Unisoft Systems Inc.
|
|
|
2565 */
|
|
|
2566
|
|
|
2567 /* Ben sez: read Dick Gabriel's essay about the Worse Is Better
|
|
|
2568 approach to programming and its connection to the silly
|
|
|
2569 interruptible-system-call business. To find it, look on
|
|
2340
|
2570 Jamie's home page (http://www.jwz.org/doc/worse-is-better.html). */
|
|
428
|
2571
|
|
771
|
2572 #ifdef WIN32_NATIVE
|
|
|
2573
|
|
|
2574 static int
|
|
|
2575 underlying_open_1 (const Extbyte *path, int oflag, int mode)
|
|
|
2576 {
|
|
|
2577 if (XEUNICODE_P)
|
|
|
2578 return _wopen ((const wchar_t *) path, oflag, mode);
|
|
|
2579 else
|
|
|
2580 return _open (path, oflag, mode);
|
|
|
2581 }
|
|
|
2582
|
|
|
2583 #endif /* WIN32_NATIVE */
|
|
|
2584
|
|
2367
|
2585 /* Just call open() with normal open() semantics, with some fixups for
|
|
|
2586 problems under Windows. */
|
|
771
|
2587
|
|
|
2588 static int
|
|
|
2589 underlying_open (const Extbyte *path, int oflag, int mode)
|
|
|
2590 {
|
|
|
2591 #ifdef WIN32_NATIVE
|
|
|
2592 {
|
|
|
2593 /* Try to open file without _O_CREAT, to be able to write to hidden
|
|
|
2594 and system files. Force all file handles to be
|
|
|
2595 non-inheritable. */
|
|
|
2596 int res = underlying_open_1 (path, (oflag & ~_O_CREAT) | _O_NOINHERIT,
|
|
|
2597 mode);
|
|
|
2598 if (res >= 0)
|
|
|
2599 return res;
|
|
|
2600 return underlying_open_1 (path, oflag | _O_NOINHERIT, mode);
|
|
|
2601 }
|
|
|
2602 #else
|
|
|
2603 return open (path, oflag, mode);
|
|
|
2604 #endif /* WIN32_NATIVE */
|
|
|
2605 }
|
|
|
2606
|
|
2367
|
2607 static int
|
|
|
2608 retry_open_1 (const Extbyte *path, int oflag, int mode)
|
|
428
|
2609 {
|
|
440
|
2610 #ifdef INTERRUPTIBLE_OPEN
|
|
428
|
2611 {
|
|
|
2612 int rtnval;
|
|
771
|
2613 while ((rtnval = underlying_open (path, oflag, mode)) == -1
|
|
428
|
2614 && (errno == EINTR))
|
|
|
2615 DO_NOTHING;
|
|
|
2616 return rtnval;
|
|
|
2617 }
|
|
|
2618 #else
|
|
771
|
2619 return underlying_open (path, oflag, mode);
|
|
428
|
2620 #endif
|
|
|
2621 }
|
|
771
|
2622
|
|
2367
|
2623 /* A version of open() that retries when interrupted. Operates on
|
|
|
2624 externally-encoded filenames. */
|
|
|
2625
|
|
|
2626 int XCDECL
|
|
|
2627 retry_open (const Extbyte *path, int oflag, ...)
|
|
|
2628 {
|
|
|
2629 int mode;
|
|
|
2630 va_list ap;
|
|
|
2631
|
|
|
2632 va_start (ap, oflag);
|
|
|
2633 mode = va_arg (ap, int);
|
|
|
2634 va_end (ap);
|
|
|
2635
|
|
|
2636 return retry_open_1 (path, oflag, mode);
|
|
|
2637 }
|
|
|
2638
|
|
|
2639 #if defined (WIN32_NATIVE) && defined (WEXTTEXT_IS_WIDE)
|
|
|
2640
|
|
|
2641 /* Like retry_open() but operate on Wexttext filenames. */
|
|
|
2642
|
|
|
2643 int XCDECL
|
|
|
2644 wext_retry_open (const Wexttext *path, int oflag, ...)
|
|
|
2645 {
|
|
|
2646 int mode;
|
|
|
2647 va_list ap;
|
|
|
2648
|
|
|
2649 va_start (ap, oflag);
|
|
|
2650 mode = va_arg (ap, int);
|
|
|
2651 va_end (ap);
|
|
|
2652
|
|
|
2653 if (!XEUNICODE_P)
|
|
|
2654 return retry_open_1 (WEXTTEXT_TO_MULTIBYTE (path), oflag, mode);
|
|
|
2655 else
|
|
|
2656 return retry_open_1 ((Extbyte *) path, oflag, mode);
|
|
|
2657 }
|
|
|
2658
|
|
|
2659 #endif
|
|
|
2660
|
|
771
|
2661 /* The basic external entry point to open(). Handles conversion to
|
|
|
2662 external encoding, interruptions, etc. */
|
|
|
2663
|
|
872
|
2664 int XCDECL
|
|
867
|
2665 qxe_open (const Ibyte *path, int oflag, ...)
|
|
771
|
2666 {
|
|
|
2667 Extbyte *pathout;
|
|
|
2668 int mode;
|
|
|
2669 va_list ap;
|
|
|
2670
|
|
|
2671 va_start (ap, oflag);
|
|
|
2672 mode = va_arg (ap, int);
|
|
|
2673 va_end (ap);
|
|
|
2674
|
|
|
2675 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
2676 return retry_open (pathout, oflag, mode);
|
|
|
2677 }
|
|
|
2678
|
|
|
2679 /* Like qxe_open, only when open() is interrupted by EINTR, check for
|
|
428
|
2680 QUIT. This allows the callers of this function to be interrupted
|
|
|
2681 with C-g when, say, reading from named pipes. However, this should
|
|
1123
|
2682 be used with caution, as it can run random Lisp code (although it
|
|
|
2683 cannot GC).
|
|
428
|
2684
|
|
|
2685 This function will not function as expected on systems where open()
|
|
|
2686 is not interrupted by C-g. However, the worst that can happen is
|
|
|
2687 the fallback to simple open(). */
|
|
|
2688 int
|
|
867
|
2689 qxe_interruptible_open (const Ibyte *path, int oflag, int mode)
|
|
428
|
2690 {
|
|
|
2691 /* This function can GC */
|
|
771
|
2692 Extbyte *pathout;
|
|
|
2693
|
|
|
2694 PATHNAME_CONVERT_OUT (path, pathout);
|
|
428
|
2695
|
|
442
|
2696 #ifdef WIN32_NATIVE
|
|
440
|
2697 /* Make all handles non-inheritable */
|
|
|
2698 oflag |= _O_NOINHERIT;
|
|
|
2699 #endif
|
|
|
2700
|
|
428
|
2701 for (;;)
|
|
|
2702 {
|
|
771
|
2703 int rtnval = underlying_open (pathout, oflag, mode);
|
|
428
|
2704 if (!(rtnval == -1 && errno == EINTR))
|
|
|
2705 return rtnval;
|
|
|
2706 /* open() was interrupted. Was QUIT responsible? */
|
|
|
2707 QUIT;
|
|
|
2708 }
|
|
|
2709 }
|
|
|
2710
|
|
|
2711 int
|
|
771
|
2712 retry_close (int filedes)
|
|
428
|
2713 {
|
|
|
2714 #ifdef INTERRUPTIBLE_CLOSE
|
|
|
2715 int did_retry = 0;
|
|
|
2716 REGISTER int rtnval;
|
|
|
2717
|
|
|
2718 while ((rtnval = close (filedes)) == -1
|
|
|
2719 && (errno == EINTR))
|
|
|
2720 did_retry = 1;
|
|
|
2721
|
|
|
2722 /* If close is interrupted SunOS 4.1 may or may not have closed the
|
|
|
2723 file descriptor. If it did the second close will fail with
|
|
|
2724 errno = EBADF. That means we have succeeded. */
|
|
|
2725 if (rtnval == -1 && did_retry && errno == EBADF)
|
|
|
2726 return 0;
|
|
|
2727
|
|
|
2728 return rtnval;
|
|
|
2729 #else
|
|
|
2730 return close (filedes);
|
|
|
2731 #endif
|
|
|
2732 }
|
|
771
|
2733
|
|
|
2734 static ssize_t
|
|
|
2735 retry_read_1 (int fildes, void *buf, size_t nbyte, int allow_quit)
|
|
428
|
2736 {
|
|
|
2737 ssize_t rtnval;
|
|
|
2738
|
|
|
2739 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */
|
|
|
2740 while ((rtnval = read (fildes, buf, nbyte)) == -1
|
|
|
2741 && (errno == EINTR))
|
|
|
2742 {
|
|
|
2743 if (allow_quit)
|
|
853
|
2744 QUIT;
|
|
428
|
2745 }
|
|
|
2746 return rtnval;
|
|
|
2747 }
|
|
|
2748
|
|
|
2749 ssize_t
|
|
771
|
2750 retry_read (int fildes, void *buf, size_t nbyte)
|
|
428
|
2751 {
|
|
771
|
2752 return retry_read_1 (fildes, buf, nbyte, 0);
|
|
428
|
2753 }
|
|
771
|
2754
|
|
|
2755 static ssize_t
|
|
|
2756 retry_write_1 (int fildes, const void *buf, size_t nbyte, int allow_quit)
|
|
428
|
2757 {
|
|
|
2758 ssize_t bytes_written = 0;
|
|
442
|
2759 const char *b = (const char *) buf;
|
|
428
|
2760
|
|
|
2761 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */
|
|
|
2762 while (nbyte > 0)
|
|
|
2763 {
|
|
|
2764 ssize_t rtnval = write (fildes, b, nbyte);
|
|
|
2765
|
|
|
2766 if (allow_quit)
|
|
853
|
2767 QUIT;
|
|
428
|
2768
|
|
|
2769 if (rtnval == -1)
|
|
|
2770 {
|
|
|
2771 if (errno == EINTR)
|
|
|
2772 continue;
|
|
|
2773 else
|
|
|
2774 return bytes_written ? bytes_written : -1;
|
|
|
2775 }
|
|
|
2776 b += rtnval;
|
|
|
2777 nbyte -= rtnval;
|
|
|
2778 bytes_written += rtnval;
|
|
|
2779 }
|
|
|
2780 return bytes_written;
|
|
|
2781 }
|
|
|
2782
|
|
|
2783 ssize_t
|
|
771
|
2784 retry_write (int fildes, const void *buf, size_t nbyte)
|
|
428
|
2785 {
|
|
771
|
2786 return retry_write_1 (fildes, buf, nbyte, 0);
|
|
428
|
2787 }
|
|
771
|
2788
|
|
|
2789 /* Versions of read() and write() that allow quitting out of the actual
|
|
|
2790 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
|
|
|
2791 signal handler) because that's way too losing.
|
|
|
2792
|
|
|
2793 (#### Actually, longjmp()ing out of the signal handler may not be
|
|
|
2794 as losing as I thought. See qxe_reliable_signal() in sysdep.c.) */
|
|
|
2795
|
|
|
2796 Bytecount
|
|
|
2797 read_allowing_quit (int fildes, void *buf, Bytecount size)
|
|
|
2798 {
|
|
|
2799 QUIT;
|
|
|
2800 return retry_read_1 (fildes, buf, size, 1);
|
|
|
2801 }
|
|
|
2802
|
|
|
2803 Bytecount
|
|
|
2804 write_allowing_quit (int fildes, const void *buf, Bytecount size)
|
|
|
2805 {
|
|
|
2806 QUIT;
|
|
|
2807 return retry_write_1 (fildes, buf, size, 1);
|
|
|
2808 }
|
|
428
|
2809
|
|
|
2810
|
|
|
2811 /**************** stdio calls ****************/
|
|
|
2812
|
|
|
2813 /* There is at least some evidence that the stdio calls are interruptible
|
|
|
2814 just like the normal system calls, at least on some systems. In any
|
|
|
2815 case, it doesn't hurt to encapsulate them. */
|
|
|
2816
|
|
|
2817 /* #### Should also encapsulate fflush().
|
|
|
2818 #### Should conceivably encapsulate getchar() etc. What a pain! */
|
|
|
2819
|
|
|
2820 FILE *
|
|
2367
|
2821 retry_fopen (const Extbyte *path, const Ascbyte *mode)
|
|
428
|
2822 {
|
|
771
|
2823 #ifdef WIN32_NATIVE
|
|
|
2824 int fd;
|
|
|
2825 int oflag;
|
|
2367
|
2826 const Ascbyte *mode_save = mode;
|
|
771
|
2827
|
|
|
2828 /* Force all file handles to be non-inheritable. This is necessary to
|
|
|
2829 ensure child processes don't unwittingly inherit handles that might
|
|
|
2830 prevent future file access. */
|
|
|
2831
|
|
|
2832 if (mode[0] == 'r')
|
|
|
2833 oflag = O_RDONLY;
|
|
|
2834 else if (mode[0] == 'w' || mode[0] == 'a')
|
|
|
2835 oflag = O_WRONLY | O_CREAT | O_TRUNC;
|
|
|
2836 else
|
|
|
2837 return NULL;
|
|
|
2838
|
|
|
2839 /* Only do simplistic option parsing. */
|
|
|
2840 while (*++mode)
|
|
|
2841 if (mode[0] == '+')
|
|
|
2842 {
|
|
|
2843 oflag &= ~(O_RDONLY | O_WRONLY);
|
|
|
2844 oflag |= O_RDWR;
|
|
|
2845 }
|
|
|
2846 else if (mode[0] == 'b')
|
|
|
2847 {
|
|
|
2848 oflag &= ~O_TEXT;
|
|
|
2849 oflag |= O_BINARY;
|
|
|
2850 }
|
|
|
2851 else if (mode[0] == 't')
|
|
|
2852 {
|
|
|
2853 oflag &= ~O_BINARY;
|
|
|
2854 oflag |= O_TEXT;
|
|
|
2855 }
|
|
|
2856 else break;
|
|
|
2857
|
|
|
2858 fd = underlying_open (path, oflag, 0644);
|
|
|
2859 if (fd < 0)
|
|
|
2860 return NULL;
|
|
|
2861
|
|
|
2862 return _fdopen (fd, mode_save);
|
|
428
|
2863 #elif defined (INTERRUPTIBLE_OPEN)
|
|
|
2864 {
|
|
|
2865 FILE *rtnval;
|
|
771
|
2866 while (!(rtnval = fopen (path, mode)) && (errno == EINTR))
|
|
428
|
2867 DO_NOTHING;
|
|
|
2868 return rtnval;
|
|
|
2869 }
|
|
|
2870 #else
|
|
771
|
2871 return fopen (path, mode);
|
|
|
2872 #endif /* defined (INTERRUPTIBLE_OPEN) */
|
|
428
|
2873 }
|
|
771
|
2874
|
|
|
2875 FILE *
|
|
2367
|
2876 qxe_fopen (const Ibyte *path, const Ascbyte *mode)
|
|
771
|
2877 {
|
|
|
2878 Extbyte *pathout;
|
|
|
2879 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
2880 return retry_fopen (pathout, mode);
|
|
|
2881 }
|
|
|
2882
|
|
428
|
2883 int
|
|
771
|
2884 retry_fclose (FILE *stream)
|
|
428
|
2885 {
|
|
|
2886 #ifdef INTERRUPTIBLE_CLOSE
|
|
|
2887 int rtnval;
|
|
|
2888
|
|
|
2889 while ((rtnval = fclose (stream)) == EOF
|
|
|
2890 && (errno == EINTR))
|
|
|
2891 ;
|
|
|
2892 return rtnval;
|
|
|
2893 #else
|
|
|
2894 return fclose (stream);
|
|
|
2895 #endif
|
|
|
2896 }
|
|
771
|
2897
|
|
428
|
2898 size_t
|
|
771
|
2899 retry_fread (void *ptr, size_t size, size_t nitem, FILE *stream)
|
|
428
|
2900 {
|
|
|
2901 #ifdef INTERRUPTIBLE_IO
|
|
|
2902 size_t rtnval;
|
|
|
2903 size_t items_read = 0;
|
|
|
2904 char *b = (char *) ptr;
|
|
|
2905
|
|
|
2906 while (nitem > 0)
|
|
|
2907 {
|
|
|
2908 rtnval = fread (b, size, nitem, stream);
|
|
|
2909 if (rtnval == 0)
|
|
|
2910 {
|
|
|
2911 if (ferror (stream) && errno == EINTR)
|
|
|
2912 continue;
|
|
|
2913 else
|
|
|
2914 return items_read;
|
|
|
2915 }
|
|
|
2916 b += size*rtnval;
|
|
|
2917 nitem -= rtnval;
|
|
|
2918 items_read += rtnval;
|
|
|
2919 }
|
|
|
2920 return (items_read);
|
|
|
2921 #else
|
|
|
2922 return fread (ptr, size, nitem, stream);
|
|
|
2923 #endif
|
|
|
2924 }
|
|
771
|
2925
|
|
428
|
2926 size_t
|
|
771
|
2927 retry_fwrite (const void *ptr, size_t size, size_t nitem, FILE *stream)
|
|
428
|
2928 {
|
|
|
2929 #ifdef INTERRUPTIBLE_IO
|
|
|
2930 size_t rtnval;
|
|
|
2931 size_t items_written = 0;
|
|
442
|
2932 const char *b = (const char *) ptr;
|
|
428
|
2933
|
|
|
2934 while (nitem > 0)
|
|
|
2935 {
|
|
|
2936 rtnval = fwrite (b, size, nitem, stream);
|
|
|
2937 if (rtnval == 0)
|
|
|
2938 {
|
|
|
2939 if (ferror (stream) && errno == EINTR)
|
|
|
2940 continue;
|
|
|
2941 else
|
|
|
2942 return items_written;
|
|
|
2943 }
|
|
|
2944 b += size*rtnval;
|
|
|
2945 nitem -= rtnval;
|
|
|
2946 items_written += rtnval;
|
|
|
2947 }
|
|
|
2948 return (items_written);
|
|
|
2949 #else
|
|
|
2950 return fwrite (ptr, size, nitem, stream);
|
|
|
2951 #endif
|
|
|
2952 }
|
|
|
2953
|
|
|
2954 /********************* directory calls *******************/
|
|
|
2955
|
|
|
2956 int
|
|
867
|
2957 qxe_chdir (const Ibyte *path)
|
|
428
|
2958 {
|
|
771
|
2959 Extbyte *pathout;
|
|
|
2960 PATHNAME_CONVERT_OUT (path, pathout);
|
|
442
|
2961 #ifdef WIN32_NATIVE
|
|
771
|
2962 if (XEUNICODE_P)
|
|
|
2963 return _wchdir ((const wchar_t *) pathout);
|
|
|
2964 else
|
|
|
2965 return _chdir (pathout);
|
|
428
|
2966 #else
|
|
771
|
2967 return chdir (pathout);
|
|
428
|
2968 #endif
|
|
|
2969 }
|
|
771
|
2970
|
|
|
2971 int
|
|
2340
|
2972 qxe_mkdir (const Ibyte *path,
|
|
|
2973 #ifdef WIN32_NATIVE
|
|
|
2974 mode_t UNUSED (mode)
|
|
|
2975 #else
|
|
|
2976 mode_t mode
|
|
|
2977 #endif
|
|
|
2978 )
|
|
771
|
2979 {
|
|
|
2980 Extbyte *pathout;
|
|
|
2981 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
2982 #ifdef WIN32_NATIVE
|
|
|
2983 if (XEUNICODE_P)
|
|
|
2984 return _wmkdir ((const wchar_t *) pathout);
|
|
|
2985 else
|
|
|
2986 return _mkdir (pathout);
|
|
|
2987 #else
|
|
|
2988 return mkdir (pathout, mode);
|
|
|
2989 #endif
|
|
|
2990 }
|
|
|
2991
|
|
428
|
2992 DIR *
|
|
867
|
2993 qxe_opendir (const Ibyte *filename)
|
|
428
|
2994 {
|
|
771
|
2995 #ifdef WIN32_NATIVE
|
|
|
2996 return mswindows_opendir (filename);
|
|
|
2997 #else
|
|
428
|
2998 DIR *rtnval;
|
|
771
|
2999 Extbyte *pathout;
|
|
|
3000 PATHNAME_CONVERT_OUT (filename, pathout);
|
|
|
3001
|
|
|
3002 while (!(rtnval = opendir (pathout))
|
|
428
|
3003 && (errno == EINTR))
|
|
|
3004 ;
|
|
|
3005 return rtnval;
|
|
771
|
3006 #endif /* WIN32_NATIVE */
|
|
428
|
3007 }
|
|
771
|
3008
|
|
428
|
3009 DIRENTRY *
|
|
771
|
3010 qxe_readdir (DIR *dirp)
|
|
428
|
3011 {
|
|
771
|
3012 #ifdef WIN32_NATIVE
|
|
|
3013 return mswindows_readdir (dirp);
|
|
|
3014 #else /* not WIN32_NATIVE */
|
|
428
|
3015 DIRENTRY *rtnval;
|
|
|
3016
|
|
|
3017 /* Apparently setting errno is necessary on some systems?
|
|
|
3018 Maybe readdir() doesn't always set errno ?! */
|
|
|
3019 while (!(errno = 0, rtnval = readdir (dirp))
|
|
|
3020 && (errno == EINTR))
|
|
|
3021 ;
|
|
|
3022 #ifndef MULE
|
|
|
3023 return rtnval;
|
|
|
3024 #else /* MULE */
|
|
|
3025 if (rtnval == NULL) /* End of directory */
|
|
|
3026 return NULL;
|
|
|
3027 {
|
|
442
|
3028 const Extbyte * const external_name = (const Extbyte *) rtnval->d_name;
|
|
665
|
3029 Bytecount external_len = strlen (rtnval->d_name);
|
|
867
|
3030 const Ibyte *internal_name;
|
|
462
|
3031 Bytecount internal_len;
|
|
513
|
3032
|
|
462
|
3033 TO_INTERNAL_FORMAT (DATA, (external_name, external_len),
|
|
|
3034 ALLOCA, (internal_name, internal_len),
|
|
|
3035 Qfile_name);
|
|
|
3036
|
|
|
3037 /* check for common case of ASCII filename */
|
|
|
3038 if (internal_len == external_len &&
|
|
|
3039 !memcmp (external_name, internal_name, internal_len))
|
|
428
|
3040 return rtnval;
|
|
|
3041
|
|
|
3042 { /* Non-ASCII filename */
|
|
867
|
3043 static Ibyte_dynarr *internal_DIRENTRY;
|
|
428
|
3044 if (!internal_DIRENTRY)
|
|
867
|
3045 internal_DIRENTRY = Dynarr_new (Ibyte);
|
|
428
|
3046 else
|
|
|
3047 Dynarr_reset (internal_DIRENTRY);
|
|
|
3048
|
|
867
|
3049 Dynarr_add_many (internal_DIRENTRY, (Ibyte *) rtnval,
|
|
428
|
3050 offsetof (DIRENTRY, d_name));
|
|
|
3051
|
|
|
3052
|
|
|
3053 Dynarr_add_many (internal_DIRENTRY, internal_name, internal_len);
|
|
444
|
3054 Dynarr_add (internal_DIRENTRY, '\0'); /* NUL-terminate */
|
|
428
|
3055 return (DIRENTRY *) Dynarr_atp (internal_DIRENTRY, 0);
|
|
|
3056 }
|
|
|
3057 }
|
|
|
3058 #endif /* MULE */
|
|
771
|
3059 #endif /* WIN32_NATIVE */
|
|
428
|
3060 }
|
|
771
|
3061
|
|
428
|
3062 int
|
|
771
|
3063 qxe_closedir (DIR *dirp)
|
|
428
|
3064 {
|
|
771
|
3065 #ifdef WIN32_NATIVE
|
|
|
3066 return mswindows_closedir (dirp);
|
|
|
3067 #else /* not WIN32_NATIVE */
|
|
428
|
3068 int rtnval;
|
|
|
3069
|
|
|
3070 while ((rtnval = closedir (dirp)) == -1
|
|
|
3071 && (errno == EINTR))
|
|
|
3072 ;
|
|
|
3073 return rtnval;
|
|
771
|
3074 #endif /* WIN32_NATIVE */
|
|
428
|
3075 }
|
|
771
|
3076
|
|
428
|
3077 int
|
|
867
|
3078 qxe_rmdir (const Ibyte *path)
|
|
771
|
3079 {
|
|
|
3080 Extbyte *pathout;
|
|
|
3081 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
3082 #ifdef WIN32_NATIVE
|
|
|
3083 if (XEUNICODE_P)
|
|
|
3084 return _wrmdir ((const wchar_t *) pathout);
|
|
|
3085 else
|
|
|
3086 return _rmdir (pathout);
|
|
|
3087 #else
|
|
|
3088 return rmdir (pathout);
|
|
|
3089 #endif
|
|
|
3090 }
|
|
|
3091
|
|
867
|
3092 Ibyte *
|
|
771
|
3093 qxe_allocating_getcwd (void)
|
|
428
|
3094 {
|
|
771
|
3095 #ifdef HAVE_GETCWD
|
|
|
3096 Bytecount cwdsize = 1024;
|
|
|
3097 Extbyte *cwd = xnew_array (Extbyte, cwdsize);
|
|
|
3098
|
|
|
3099 /* Many getcwd()'s can take a NULL argument and malloc() the right amount
|
|
|
3100 of data, but this is non-standard. */
|
|
|
3101 while (1)
|
|
|
3102 {
|
|
|
3103 #ifdef WIN32_NATIVE
|
|
|
3104 Extbyte *ret;
|
|
|
3105
|
|
|
3106 if (XEUNICODE_P)
|
|
|
3107 ret = (Extbyte *) _wgetcwd ((wchar_t *) cwd,
|
|
|
3108 cwdsize / sizeof (wchar_t));
|
|
|
3109 else
|
|
|
3110 ret = _getcwd (cwd, cwdsize);
|
|
|
3111
|
|
|
3112 if (ret)
|
|
|
3113 {
|
|
867
|
3114 Ibyte *retin;
|
|
771
|
3115 TSTR_TO_C_STRING_MALLOC (ret, retin);
|
|
1726
|
3116 xfree (cwd, Extbyte *);
|
|
771
|
3117 return retin;
|
|
|
3118 }
|
|
|
3119 #else
|
|
|
3120 Extbyte *ret = getcwd (cwd, cwdsize);
|
|
|
3121 if (ret)
|
|
|
3122 {
|
|
867
|
3123 Ibyte *retin;
|
|
771
|
3124 EXTERNAL_TO_C_STRING_MALLOC (ret, retin, Qfile_name);
|
|
1726
|
3125 xfree (cwd, Extbyte *);
|
|
771
|
3126 return retin;
|
|
|
3127 }
|
|
|
3128 #endif /* WIN32_NATIVE */
|
|
|
3129
|
|
|
3130 if (errno == ERANGE)
|
|
|
3131 {
|
|
|
3132 cwdsize *= 2;
|
|
|
3133 XREALLOC_ARRAY (cwd, Extbyte, cwdsize);
|
|
|
3134 }
|
|
|
3135 else
|
|
|
3136 {
|
|
1726
|
3137 xfree (cwd, Extbyte *);
|
|
771
|
3138 return NULL;
|
|
|
3139 }
|
|
|
3140 }
|
|
|
3141 #else
|
|
2421
|
3142 Extbyte chingame_limitos_arbitrarios[PATH_MAX_EXTERNAL];
|
|
867
|
3143 Ibyte *ret2;
|
|
771
|
3144
|
|
|
3145 if (!getwd (chingame_limitos_arbitrarios))
|
|
|
3146 return 0;
|
|
|
3147 EXTERNAL_TO_C_STRING_MALLOC (chingame_limitos_arbitrarios, ret2, Qfile_name);
|
|
|
3148 return ret2;
|
|
|
3149 #endif /* HAVE_GETCWD */
|
|
428
|
3150 }
|
|
|
3151
|
|
|
3152 /***************** file-information calls ******************/
|
|
|
3153
|
|
|
3154 int
|
|
867
|
3155 qxe_access (const Ibyte *path, int mode)
|
|
428
|
3156 {
|
|
771
|
3157 #ifdef WIN32_NATIVE
|
|
|
3158 return mswindows_access (path, mode);
|
|
|
3159 #else /* not WIN32_NATIVE */
|
|
|
3160 Extbyte *pathout;
|
|
|
3161 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
3162 return access (pathout, mode);
|
|
|
3163 #endif /* WIN32_NATIVE */
|
|
428
|
3164 }
|
|
771
|
3165
|
|
|
3166 #if defined (HAVE_EACCESS)
|
|
428
|
3167 int
|
|
867
|
3168 qxe_eaccess (const Ibyte *path, int mode)
|
|
428
|
3169 {
|
|
771
|
3170 Extbyte *pathout;
|
|
|
3171 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
3172 return eaccess (pathout, mode);
|
|
428
|
3173 }
|
|
771
|
3174 #endif /* defined (HAVE_EACCESS) */
|
|
|
3175
|
|
428
|
3176 int
|
|
867
|
3177 qxe_lstat (const Ibyte *path, struct stat *buf)
|
|
428
|
3178 {
|
|
771
|
3179 /* if system does not have symbolic links, it does not have lstat.
|
|
|
3180 In that case, use ordinary stat instead. */
|
|
|
3181 #ifndef S_IFLNK
|
|
|
3182 return qxe_stat (path, buf);
|
|
|
3183 #else
|
|
|
3184 Extbyte *pathout;
|
|
|
3185 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
3186 return lstat (pathout, buf);
|
|
|
3187 #endif
|
|
428
|
3188 }
|
|
771
|
3189
|
|
|
3190 #if defined (HAVE_READLINK)
|
|
428
|
3191 int
|
|
867
|
3192 qxe_readlink (const Ibyte *path, Ibyte *buf, size_t bufsiz)
|
|
428
|
3193 {
|
|
771
|
3194 int retval;
|
|
|
3195 Extbyte *pathout;
|
|
|
3196
|
|
|
3197 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
3198 retval = readlink (pathout, (char *) buf, bufsiz);
|
|
|
3199 if (retval < 0)
|
|
|
3200 return retval;
|
|
|
3201 {
|
|
867
|
3202 Ibyte *intbuf;
|
|
771
|
3203 Bytecount tamanho;
|
|
|
3204
|
|
|
3205 TO_INTERNAL_FORMAT (DATA, (buf, retval),
|
|
|
3206 ALLOCA, (intbuf, tamanho), Qfile_name);
|
|
|
3207 /* the man page says this function does not null-terminate */
|
|
|
3208 if (tamanho >= (Bytecount) bufsiz)
|
|
|
3209 tamanho = bufsiz;
|
|
|
3210 memcpy (buf, intbuf, tamanho);
|
|
|
3211 return tamanho;
|
|
|
3212 }
|
|
428
|
3213 }
|
|
771
|
3214 #endif /* defined (HAVE_READLINK) */
|
|
|
3215
|
|
432
|
3216 int
|
|
771
|
3217 qxe_fstat (int fd, struct stat *buf)
|
|
432
|
3218 {
|
|
442
|
3219 #ifdef WIN32_NATIVE
|
|
|
3220 return mswindows_fstat (fd, buf);
|
|
|
3221 #else
|
|
432
|
3222 return fstat (fd, buf);
|
|
771
|
3223 #endif /* WIN32_NATIVE */
|
|
432
|
3224 }
|
|
|
3225
|
|
428
|
3226 int
|
|
867
|
3227 qxe_stat (const Ibyte *path, struct stat *buf)
|
|
428
|
3228 {
|
|
442
|
3229 #ifdef WIN32_NATIVE
|
|
|
3230 return mswindows_stat (path, buf);
|
|
771
|
3231 #else /* not WIN32_NATIVE */
|
|
|
3232 Extbyte *pathout;
|
|
|
3233 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
3234 return stat (pathout, buf);
|
|
|
3235 #endif /* WIN32_NATIVE */
|
|
428
|
3236 }
|
|
|
3237
|
|
771
|
3238
|
|
428
|
3239 /****************** file-manipulation calls *****************/
|
|
|
3240
|
|
|
3241 int
|
|
867
|
3242 qxe_chmod (const Ibyte *path, mode_t mode)
|
|
428
|
3243 {
|
|
771
|
3244 Extbyte *pathout;
|
|
|
3245 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
3246 #ifdef WIN32_NATIVE
|
|
|
3247 if (XEUNICODE_P)
|
|
|
3248 return _wchmod ((const wchar_t *) pathout, mode);
|
|
|
3249 else
|
|
|
3250 return _chmod (pathout, mode);
|
|
|
3251 #else
|
|
|
3252 return chmod (pathout, mode);
|
|
|
3253 #endif
|
|
428
|
3254 }
|
|
771
|
3255
|
|
|
3256 #if defined (HAVE_LINK)
|
|
428
|
3257 int
|
|
867
|
3258 qxe_link (const Ibyte *existing, const Ibyte *new)
|
|
428
|
3259 {
|
|
771
|
3260 #ifdef WIN32_NATIVE
|
|
|
3261 return mswindows_link (existing, new);
|
|
|
3262 #else /* not WIN32_NATIVE */
|
|
|
3263 Extbyte *existingout, *newout;
|
|
|
3264 PATHNAME_CONVERT_OUT (existing, existingout);
|
|
|
3265 PATHNAME_CONVERT_OUT (new, newout);
|
|
|
3266 return link (existingout, newout);
|
|
|
3267 #endif /* WIN32_NATIVE */
|
|
428
|
3268 }
|
|
771
|
3269 #endif /* defined (HAVE_LINK) */
|
|
|
3270
|
|
428
|
3271 int
|
|
867
|
3272 qxe_rename (const Ibyte *old, const Ibyte *new)
|
|
428
|
3273 {
|
|
442
|
3274 #ifdef WIN32_NATIVE
|
|
872
|
3275 return mswindows_rename (old, new);
|
|
771
|
3276 #else /* not WIN32_NATIVE */
|
|
|
3277 Extbyte *oldout, *newout;
|
|
|
3278 PATHNAME_CONVERT_OUT (old, oldout);
|
|
|
3279 PATHNAME_CONVERT_OUT (new, newout);
|
|
|
3280 return rename (oldout, newout);
|
|
442
|
3281 #endif /* WIN32_NATIVE */
|
|
428
|
3282 }
|
|
771
|
3283
|
|
|
3284 #if defined (HAVE_SYMLINK)
|
|
428
|
3285 int
|
|
867
|
3286 qxe_symlink (const Ibyte *name1, const Ibyte *name2)
|
|
428
|
3287 {
|
|
771
|
3288 Extbyte *name1out, *name2out;
|
|
|
3289 PATHNAME_CONVERT_OUT (name1, name1out);
|
|
|
3290 PATHNAME_CONVERT_OUT (name2, name2out);
|
|
|
3291 return symlink (name1out, name2out);
|
|
428
|
3292 }
|
|
771
|
3293 #endif /* defined (HAVE_SYMLINK) */
|
|
|
3294
|
|
428
|
3295 int
|
|
867
|
3296 qxe_unlink (const Ibyte *path)
|
|
428
|
3297 {
|
|
771
|
3298 #ifdef WIN32_NATIVE
|
|
|
3299 return mswindows_unlink (path);
|
|
|
3300 #else /* not WIN32_NATIVE */
|
|
|
3301 Extbyte *pathout;
|
|
|
3302 PATHNAME_CONVERT_OUT (path, pathout);
|
|
|
3303 return unlink (pathout);
|
|
|
3304 #endif /* WIN32_NATIVE */
|
|
428
|
3305 }
|
|
771
|
3306
|
|
|
3307
|
|
|
3308 /****************** process calls *****************/
|
|
|
3309
|
|
428
|
3310 int
|
|
867
|
3311 qxe_execve (const Ibyte *filename, Ibyte * const argv[],
|
|
|
3312 Ibyte * const envp[])
|
|
428
|
3313 {
|
|
771
|
3314 int i, argc, envc;
|
|
|
3315 Extbyte *pathext;
|
|
|
3316 Extbyte **new_argv;
|
|
|
3317 Extbyte **new_envp;
|
|
|
3318
|
|
|
3319 PATHNAME_CONVERT_OUT (filename, pathext);
|
|
|
3320
|
|
428
|
3321 for (argc = 0; argv[argc]; argc++)
|
|
|
3322 ;
|
|
771
|
3323 new_argv = alloca_array (Extbyte *, argc + 1);
|
|
428
|
3324 for (i = 0; i < argc; i++)
|
|
771
|
3325 C_STRING_TO_EXTERNAL (argv[i], new_argv[i], Qnative);
|
|
428
|
3326 new_argv[argc] = NULL;
|
|
771
|
3327
|
|
|
3328 for (envc = 0; envp[envc]; envc++)
|
|
|
3329 ;
|
|
|
3330 new_envp = alloca_array (Extbyte *, envc + 1);
|
|
|
3331 for (i = 0; i < envc; i++)
|
|
|
3332 C_STRING_TO_EXTERNAL (envp[i], new_envp[i], Qnative);
|
|
|
3333 new_envp[envc] = NULL;
|
|
|
3334
|
|
1318
|
3335 #if defined (WIN32_NATIVE)
|
|
|
3336 if (XEUNICODE_P)
|
|
|
3337 return _wexecve ((const wchar_t *) pathext,
|
|
|
3338 (const wchar_t * const *) new_argv,
|
|
|
3339 (const wchar_t * const *) new_envp);
|
|
|
3340 #endif
|
|
771
|
3341 return execve (pathext, new_argv, new_envp);
|
|
|
3342 }
|
|
|
3343
|
|
|
3344 pid_t
|
|
|
3345 qxe_getpid (void)
|
|
|
3346 {
|
|
|
3347 #ifdef WIN32_NATIVE
|
|
|
3348 return abs (getpid ());
|
|
|
3349 #else
|
|
|
3350 return getpid ();
|
|
|
3351 #endif
|
|
428
|
3352 }
|
|
771
|
3353
|
|
|
3354
|
|
|
3355 /****************** passwd calls *****************/
|
|
|
3356
|
|
|
3357 struct passwd cached_pwd;
|
|
|
3358
|
|
|
3359 static struct passwd *
|
|
|
3360 copy_in_passwd (struct passwd *pwd)
|
|
|
3361 {
|
|
|
3362 if (!pwd)
|
|
|
3363 return NULL;
|
|
|
3364
|
|
|
3365 if (cached_pwd.pw_name)
|
|
1726
|
3366 xfree (cached_pwd.pw_name, char *);
|
|
771
|
3367 if (cached_pwd.pw_passwd)
|
|
1726
|
3368 xfree (cached_pwd.pw_passwd, char *);
|
|
771
|
3369 if (cached_pwd.pw_gecos)
|
|
1726
|
3370 xfree (cached_pwd.pw_gecos, char *);
|
|
771
|
3371 if (cached_pwd.pw_dir)
|
|
1726
|
3372 xfree (cached_pwd.pw_dir, char *);
|
|
771
|
3373 if (cached_pwd.pw_shell)
|
|
1726
|
3374 xfree (cached_pwd.pw_shell, char *);
|
|
771
|
3375
|
|
|
3376 cached_pwd = *pwd;
|
|
|
3377 if (cached_pwd.pw_name)
|
|
|
3378 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_name,
|
|
|
3379 C_STRING_MALLOC, cached_pwd.pw_name, Qnative);
|
|
|
3380 if (cached_pwd.pw_passwd)
|
|
|
3381 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_passwd,
|
|
|
3382 C_STRING_MALLOC, cached_pwd.pw_passwd, Qnative);
|
|
|
3383 if (cached_pwd.pw_gecos)
|
|
|
3384 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_gecos,
|
|
|
3385 C_STRING_MALLOC, cached_pwd.pw_gecos, Qnative);
|
|
|
3386 if (cached_pwd.pw_dir)
|
|
|
3387 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_dir,
|
|
|
3388 C_STRING_MALLOC, cached_pwd.pw_dir, Qfile_name);
|
|
|
3389 if (cached_pwd.pw_shell)
|
|
|
3390 TO_INTERNAL_FORMAT (C_STRING, cached_pwd.pw_shell,
|
|
|
3391 C_STRING_MALLOC, cached_pwd.pw_shell, Qfile_name);
|
|
|
3392 return &cached_pwd;
|
|
|
3393 }
|
|
|
3394
|
|
|
3395 struct passwd *
|
|
867
|
3396 qxe_getpwnam (const Ibyte *name)
|
|
771
|
3397 {
|
|
|
3398 #ifdef WIN32_NATIVE
|
|
|
3399 /* Synthetic versions are defined in nt.c and already do conversion. */
|
|
|
3400 return getpwnam (name);
|
|
|
3401 #else
|
|
|
3402 Extbyte *nameext;
|
|
|
3403 C_STRING_TO_EXTERNAL (name, nameext, Qnative);
|
|
|
3404
|
|
|
3405 return copy_in_passwd (getpwnam (nameext));
|
|
|
3406 #endif /* WIN32_NATIVE */
|
|
|
3407 }
|
|
|
3408
|
|
|
3409 struct passwd *
|
|
|
3410 qxe_getpwuid (uid_t uid)
|
|
|
3411 {
|
|
|
3412 #ifdef WIN32_NATIVE
|
|
|
3413 /* Synthetic versions are defined in nt.c and already do conversion. */
|
|
|
3414 return getpwuid (uid);
|
|
|
3415 #else
|
|
|
3416 return copy_in_passwd (getpwuid (uid));
|
|
|
3417 #endif /* WIN32_NATIVE */
|
|
|
3418 }
|
|
|
3419
|
|
|
3420 #ifndef WIN32_NATIVE
|
|
|
3421
|
|
|
3422 struct passwd *
|
|
|
3423 qxe_getpwent (void)
|
|
|
3424 {
|
|
|
3425 /* No WIN32_NATIVE version of this. */
|
|
|
3426 return copy_in_passwd (getpwent ());
|
|
|
3427 }
|
|
|
3428
|
|
|
3429 #endif /* not WIN32_NATIVE */
|
|
|
3430
|
|
|
3431 /****************** time calls *****************/
|
|
|
3432
|
|
867
|
3433 static Ibyte *ctime_static;
|
|
|
3434
|
|
|
3435 Ibyte *
|
|
771
|
3436 qxe_ctime (const time_t *t)
|
|
|
3437 {
|
|
|
3438 Extbyte *str = (Extbyte *) ctime (t);
|
|
|
3439 if (!str) /* can happen on MS Windows */
|
|
867
|
3440 return (Ibyte *) "Sun Jan 01 00:00:00 1970";
|
|
771
|
3441 if (ctime_static)
|
|
1726
|
3442 xfree (ctime_static, Ibyte *);
|
|
771
|
3443 EXTERNAL_TO_C_STRING_MALLOC (str, ctime_static, Qnative);
|
|
|
3444 return ctime_static;
|
|
|
3445 }
|
|
428
|
3446
|
|
1204
|
3447
|
|
912
|
3448 /************************************************************************/
|
|
|
3449 /* Emulation of missing functions from wchar.h */
|
|
|
3450 /************************************************************************/
|
|
|
3451
|
|
|
3452 #ifndef HAVE_WCHAR_H
|
|
|
3453 size_t
|
|
2367
|
3454 wcslen (const wchar_t *s)
|
|
912
|
3455 {
|
|
|
3456 const wchar_t *p = s;
|
|
|
3457
|
|
|
3458 while (*p++)
|
|
|
3459 ;
|
|
|
3460
|
|
|
3461 return p - s;
|
|
|
3462 }
|
|
|
3463 #endif
|
|
1204
|
3464
|
|
|
3465 /************************************************************************/
|
|
|
3466 /* Emulation of missing functions from string.h */
|
|
|
3467 /************************************************************************/
|
|
|
3468
|
|
|
3469 #ifndef HAVE_STRLWR
|
|
|
3470 char *
|
|
|
3471 strlwr (char *s)
|
|
|
3472 {
|
|
1271
|
3473 REGISTER char *c;
|
|
|
3474
|
|
|
3475 for (c = s; *c; c++)
|
|
1204
|
3476 {
|
|
1271
|
3477 *c = tolower (*c);
|
|
1204
|
3478 }
|
|
1271
|
3479 return s;
|
|
1204
|
3480 }
|
|
|
3481 #endif
|
|
|
3482
|
|
1271
|
3483 #ifndef HAVE_STRUPR
|
|
1204
|
3484 char *
|
|
|
3485 strupr (char *s)
|
|
|
3486 {
|
|
1271
|
3487 REGISTER char *c;
|
|
|
3488
|
|
|
3489 for (c = s; *c; c++)
|
|
1204
|
3490 {
|
|
1271
|
3491 *c = toupper (*c);
|
|
1204
|
3492 }
|
|
1271
|
3493 return s;
|
|
1204
|
3494 }
|
|
|
3495 #endif
|
|
912
|
3496
|
|
428
|
3497
|
|
|
3498 /************************************************************************/
|
|
|
3499 /* Emulations of missing system calls */
|
|
|
3500 /************************************************************************/
|
|
|
3501
|
|
|
3502 /***** (these are primarily required for USG, it seems) *****/
|
|
|
3503
|
|
|
3504 /*
|
|
|
3505 * Emulate rename using unlink/link. Note that this is
|
|
|
3506 * only partially correct. Also, doesn't enforce restriction
|
|
|
3507 * that files be of same type (regular->regular, dir->dir, etc).
|
|
|
3508 */
|
|
|
3509
|
|
|
3510 #ifndef HAVE_RENAME
|
|
|
3511 int
|
|
771
|
3512 rename (const Extbyte *from, const Extbyte *to)
|
|
428
|
3513 {
|
|
|
3514 if (access (from, 0) == 0)
|
|
|
3515 {
|
|
|
3516 unlink (to);
|
|
|
3517 if (link (from, to) == 0)
|
|
|
3518 if (unlink (from) == 0)
|
|
|
3519 return (0);
|
|
|
3520 }
|
|
|
3521 return (-1);
|
|
|
3522 }
|
|
|
3523 #endif /* HAVE_RENAME */
|
|
|
3524
|
|
|
3525 #ifdef HPUX
|
|
|
3526 #ifndef HAVE_PERROR
|
|
|
3527
|
|
|
3528 /* HPUX curses library references perror, but as far as we know
|
|
|
3529 it won't be called. Anyway this definition will do for now. */
|
|
|
3530
|
|
|
3531 perror (void)
|
|
|
3532 {
|
|
|
3533 }
|
|
|
3534
|
|
|
3535 #endif /* not HAVE_PERROR */
|
|
|
3536 #endif /* HPUX */
|
|
|
3537
|
|
|
3538 #ifndef HAVE_DUP2
|
|
|
3539
|
|
|
3540 /*
|
|
|
3541 * Emulate BSD dup2. First close newd if it already exists.
|
|
|
3542 * Then, attempt to dup oldd. If not successful, call dup2 recursively
|
|
|
3543 * until we are, then close the unsuccessful ones.
|
|
|
3544 */
|
|
|
3545
|
|
|
3546 int
|
|
|
3547 dup2 (int oldd, int newd)
|
|
|
3548 {
|
|
|
3549 int fd, ret;
|
|
|
3550
|
|
771
|
3551 retry_close (newd);
|
|
428
|
3552
|
|
|
3553 #ifdef F_DUPFD
|
|
|
3554 fd = fcntl (oldd, F_DUPFD, newd);
|
|
|
3555 if (fd != newd)
|
|
563
|
3556 signal_ferror_with_frob (Qfile_error, lisp_strerror (errno),
|
|
|
3557 "can't dup2 (%i, %i)", oldd, newd);
|
|
428
|
3558 #else
|
|
|
3559 fd = dup (old);
|
|
|
3560 if (fd == -1)
|
|
|
3561 return -1;
|
|
|
3562 if (fd == new)
|
|
|
3563 return new;
|
|
|
3564 ret = dup2 (old, new);
|
|
771
|
3565 retry_close (fd);
|
|
428
|
3566 return ret;
|
|
|
3567 #endif /* F_DUPFD */
|
|
|
3568 }
|
|
|
3569
|
|
|
3570 #endif /* not HAVE_DUP2 */
|
|
|
3571
|
|
|
3572 /*
|
|
|
3573 * Gettimeofday. Simulate as much as possible. Only accurate
|
|
|
3574 * to nearest second. Emacs doesn't use tzp so ignore it for now.
|
|
|
3575 */
|
|
|
3576
|
|
|
3577 #if !defined (HAVE_GETTIMEOFDAY)
|
|
|
3578
|
|
|
3579 int
|
|
|
3580 gettimeofday (struct timeval *tp, struct timezone *tzp)
|
|
|
3581 {
|
|
|
3582 extern long time ();
|
|
|
3583
|
|
|
3584 tp->tv_sec = time ((long *)0);
|
|
|
3585 tp->tv_usec = 0;
|
|
|
3586 if (tzp != 0)
|
|
|
3587 tzp->tz_minuteswest = -1;
|
|
|
3588 return (0);
|
|
|
3589 }
|
|
|
3590
|
|
|
3591 #endif /* !HAVE_GETTIMEOFDAY */
|
|
|
3592
|
|
|
3593 /* No need to encapsulate utime and utimes explicitly because all
|
|
|
3594 access to those functions goes through the following. */
|
|
|
3595
|
|
|
3596 int
|
|
2340
|
3597 set_file_times (
|
|
|
3598 #if defined (WIN32_NATIVE) || defined (HAVE_UTIME) || defined (HAVE_UTIMES)
|
|
|
3599 Lisp_Object path, EMACS_TIME atime, EMACS_TIME mtime
|
|
|
3600 #else
|
|
|
3601 Lisp_Object UNUSED (path), EMACS_TIME UNUSED (atime),
|
|
|
3602 EMACS_TIME UNUSED (mtime)
|
|
|
3603 #endif
|
|
|
3604 )
|
|
428
|
3605 {
|
|
592
|
3606 #if defined (WIN32_NATIVE)
|
|
460
|
3607 struct utimbuf utb;
|
|
|
3608 utb.actime = EMACS_SECS (atime);
|
|
|
3609 utb.modtime = EMACS_SECS (mtime);
|
|
592
|
3610 return mswindows_utime (path, &utb);
|
|
|
3611 #elif defined (HAVE_UTIME)
|
|
|
3612 struct utimbuf utb;
|
|
|
3613 Extbyte *filename;
|
|
|
3614 utb.actime = EMACS_SECS (atime);
|
|
|
3615 utb.modtime = EMACS_SECS (mtime);
|
|
|
3616 LISP_STRING_TO_EXTERNAL (path, filename, Qfile_name);
|
|
460
|
3617 return utime (filename, &utb);
|
|
|
3618 #elif defined (HAVE_UTIMES)
|
|
428
|
3619 struct timeval tv[2];
|
|
592
|
3620 Extbyte *filename;
|
|
428
|
3621 tv[0] = atime;
|
|
|
3622 tv[1] = mtime;
|
|
592
|
3623 LISP_STRING_TO_EXTERNAL (path, filename, Qfile_name);
|
|
428
|
3624 return utimes (filename, tv);
|
|
460
|
3625 #else
|
|
|
3626 /* No file times setting function available. */
|
|
|
3627 return -1;
|
|
|
3628 #endif
|
|
428
|
3629 }
|
|
|
3630
|
|
|
3631 /* */
|
|
|
3632
|
|
|
3633 static long ticks_per_second;
|
|
|
3634 static long orig_user_ticks, orig_system_ticks;
|
|
|
3635 EMACS_TIME orig_real_time;
|
|
|
3636
|
|
|
3637 static int process_times_available;
|
|
|
3638
|
|
|
3639 /* Return the relative user and system tick count. We try to
|
|
|
3640 maintain calculations in terms of integers as long as possible
|
|
|
3641 for increased accuracy. */
|
|
|
3642
|
|
|
3643 static int
|
|
2340
|
3644 get_process_times_1 (
|
|
|
3645 #if defined (CLOCKS_PER_SEC) || defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE)
|
|
|
3646 long *user_ticks, long *system_ticks
|
|
|
3647 #else
|
|
|
3648 long *UNUSED (user_ticks), long *UNUSED (system_ticks)
|
|
|
3649 #endif
|
|
|
3650 )
|
|
428
|
3651 {
|
|
442
|
3652 #if defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WIN32_NATIVE)
|
|
428
|
3653 /* We have the POSIX times() function available. */
|
|
777
|
3654 /* #### Perhaps we should just use a configure test for times()? */
|
|
428
|
3655 struct tms tttt;
|
|
|
3656 times (&tttt);
|
|
|
3657 *user_ticks = (long) tttt.tms_utime;
|
|
|
3658 *system_ticks = (long) tttt.tms_stime;
|
|
|
3659 return 1;
|
|
|
3660 #elif defined (CLOCKS_PER_SEC)
|
|
|
3661 *user_ticks = (long) clock ();
|
|
|
3662 *system_ticks = 0;
|
|
|
3663 return 1;
|
|
|
3664 #else
|
|
|
3665 return 0;
|
|
|
3666 #endif
|
|
|
3667 }
|
|
|
3668
|
|
|
3669 void
|
|
|
3670 init_process_times_very_early (void)
|
|
|
3671 {
|
|
|
3672 #if defined (_SC_CLK_TCK)
|
|
|
3673 ticks_per_second = sysconf (_SC_CLK_TCK);
|
|
|
3674 #elif defined (CLK_TCK)
|
|
|
3675 ticks_per_second = CLK_TCK;
|
|
|
3676 #elif defined (CLOCKS_PER_SEC)
|
|
|
3677 ticks_per_second = CLOCKS_PER_SEC;
|
|
|
3678 #endif
|
|
|
3679
|
|
|
3680 process_times_available = get_process_times_1 (&orig_user_ticks,
|
|
|
3681 &orig_system_ticks);
|
|
|
3682 EMACS_GET_TIME (orig_real_time);
|
|
|
3683 }
|
|
|
3684
|
|
|
3685 /* Return the user and system times used up by this process so far. */
|
|
|
3686 void
|
|
|
3687 get_process_times (double *user_time, double *system_time, double *real_time)
|
|
|
3688 {
|
|
|
3689 EMACS_TIME curr_real_time;
|
|
|
3690 EMACS_TIME elapsed_time;
|
|
|
3691 long curr_user_ticks, curr_system_ticks;
|
|
|
3692
|
|
|
3693 EMACS_GET_TIME (curr_real_time);
|
|
|
3694 EMACS_SUB_TIME (elapsed_time, curr_real_time, orig_real_time);
|
|
|
3695 *real_time = (EMACS_SECS (elapsed_time)
|
|
|
3696 + ((double) EMACS_USECS (elapsed_time)) / 1000000);
|
|
|
3697 if (get_process_times_1 (&curr_user_ticks, &curr_system_ticks))
|
|
|
3698 {
|
|
|
3699 *user_time = (((double) (curr_user_ticks - orig_user_ticks))
|
|
|
3700 / ticks_per_second);
|
|
|
3701 *system_time = (((double) (curr_system_ticks - orig_system_ticks))
|
|
|
3702 / ticks_per_second);
|
|
|
3703 }
|
|
|
3704 else
|
|
|
3705 {
|
|
|
3706 /* A lame OS */
|
|
|
3707 *user_time = *real_time;
|
|
|
3708 *system_time = 0;
|
|
|
3709 }
|
|
|
3710 }
|
|
|
3711
|
|
|
3712 #ifndef HAVE_RANDOM
|
|
|
3713 #ifdef random
|
|
|
3714 #define HAVE_RANDOM
|
|
|
3715 #endif
|
|
|
3716 #endif
|
|
|
3717
|
|
|
3718 /* Figure out how many bits the system's random number generator uses.
|
|
|
3719 `random' and `lrand48' are assumed to return 31 usable bits.
|
|
|
3720 BSD `rand' returns a 31 bit value but the low order bits are unusable;
|
|
|
3721 so we'll shift it and treat it like the 15-bit USG `rand'. */
|
|
|
3722
|
|
|
3723 #ifndef RAND_BITS
|
|
|
3724 # ifdef HAVE_RANDOM
|
|
|
3725 # define RAND_BITS 31
|
|
|
3726 # else /* !HAVE_RANDOM */
|
|
|
3727 # ifdef HAVE_LRAND48
|
|
|
3728 # define RAND_BITS 31
|
|
|
3729 # define random lrand48
|
|
|
3730 # else /* !HAVE_LRAND48 */
|
|
|
3731 # define RAND_BITS 15
|
|
|
3732 # if RAND_MAX == 32767
|
|
|
3733 # define random rand
|
|
|
3734 # else /* RAND_MAX != 32767 */
|
|
|
3735 # if RAND_MAX == 2147483647
|
|
|
3736 # define random() (rand () >> 16)
|
|
|
3737 # else /* RAND_MAX != 2147483647 */
|
|
|
3738 # ifdef USG
|
|
|
3739 # define random rand
|
|
|
3740 # else
|
|
|
3741 # define random() (rand () >> 16)
|
|
|
3742 # endif /* !BSD */
|
|
|
3743 # endif /* RAND_MAX != 2147483647 */
|
|
|
3744 # endif /* RAND_MAX != 32767 */
|
|
|
3745 # endif /* !HAVE_LRAND48 */
|
|
|
3746 # endif /* !HAVE_RANDOM */
|
|
|
3747 #endif /* !RAND_BITS */
|
|
|
3748
|
|
|
3749 void
|
|
|
3750 seed_random (long arg)
|
|
|
3751 {
|
|
|
3752 #ifdef HAVE_RANDOM
|
|
|
3753 srandom ((unsigned int)arg);
|
|
|
3754 #else
|
|
|
3755 # ifdef HAVE_LRAND48
|
|
|
3756 srand48 (arg);
|
|
|
3757 # else
|
|
|
3758 srand ((unsigned int)arg);
|
|
|
3759 # endif
|
|
|
3760 #endif
|
|
1983
|
3761 #ifdef HAVE_BIGNUM
|
|
|
3762 bignum_random_seed ((unsigned long) arg);
|
|
|
3763 #endif
|
|
428
|
3764 }
|
|
|
3765
|
|
|
3766 /*
|
|
|
3767 * Build a full Emacs-sized word out of whatever we've got.
|
|
|
3768 * This suffices even for a 64-bit architecture with a 15-bit rand.
|
|
|
3769 */
|
|
|
3770 long
|
|
|
3771 get_random (void)
|
|
|
3772 {
|
|
|
3773 long val = random ();
|
|
2039
|
3774 #if INT_VALBITS > RAND_BITS
|
|
428
|
3775 val = (val << RAND_BITS) ^ random ();
|
|
2039
|
3776 #if INT_VALBITS > 2*RAND_BITS
|
|
428
|
3777 val = (val << RAND_BITS) ^ random ();
|
|
2039
|
3778 #if INT_VALBITS > 3*RAND_BITS
|
|
428
|
3779 val = (val << RAND_BITS) ^ random ();
|
|
2039
|
3780 #if INT_VALBITS > 4*RAND_BITS
|
|
428
|
3781 val = (val << RAND_BITS) ^ random ();
|
|
|
3782 #endif /* need at least 5 */
|
|
|
3783 #endif /* need at least 4 */
|
|
|
3784 #endif /* need at least 3 */
|
|
|
3785 #endif /* need at least 2 */
|
|
2039
|
3786 return val & (EMACS_INT) ((1UL << INT_VALBITS) - 1);
|
|
428
|
3787 }
|
|
|
3788
|
|
|
3789
|
|
|
3790 /************************************************************************/
|
|
|
3791 /* Strings corresponding to defined signals */
|
|
|
3792 /************************************************************************/
|
|
|
3793
|
|
|
3794 #if !defined (SYS_SIGLIST_DECLARED) && !defined (HAVE_SYS_SIGLIST)
|
|
|
3795
|
|
442
|
3796 #if defined(WIN32_NATIVE) || defined(CYGWIN)
|
|
|
3797 const char *sys_siglist[] =
|
|
428
|
3798 {
|
|
771
|
3799 /* $$####begin-snarf */
|
|
428
|
3800 "bum signal!!",
|
|
|
3801 "hangup",
|
|
|
3802 "interrupt",
|
|
|
3803 "quit",
|
|
|
3804 "illegal instruction",
|
|
|
3805 "trace trap",
|
|
|
3806 "iot instruction",
|
|
|
3807 "emt instruction",
|
|
|
3808 "floating point exception",
|
|
|
3809 "kill",
|
|
|
3810 "bus error",
|
|
|
3811 "segmentation violation",
|
|
|
3812 "bad argument to system call",
|
|
|
3813 "write on a pipe with no one to read it",
|
|
|
3814 "alarm clock",
|
|
|
3815 "software termination signal from kill",
|
|
|
3816 "status signal",
|
|
|
3817 "sendable stop signal not from tty",
|
|
|
3818 "stop signal from tty",
|
|
|
3819 "continue a stopped process",
|
|
|
3820 "child status has changed",
|
|
|
3821 "background read attempted from control tty",
|
|
|
3822 "background write attempted from control tty",
|
|
|
3823 "input record available at control tty",
|
|
|
3824 "exceeded CPU time limit",
|
|
|
3825 "exceeded file size limit"
|
|
771
|
3826 /* $$####end-snarf */
|
|
428
|
3827 };
|
|
|
3828 #endif
|
|
|
3829
|
|
|
3830 #ifdef USG
|
|
|
3831 #ifdef AIX
|
|
442
|
3832 const char *sys_siglist[NSIG + 1] =
|
|
428
|
3833 {
|
|
|
3834 /* AIX has changed the signals a bit */
|
|
863
|
3835 DEFER_GETTEXT ("bogus signal"), /* 0 */
|
|
|
3836 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */
|
|
|
3837 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */
|
|
|
3838 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */
|
|
|
3839 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */
|
|
|
3840 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */
|
|
|
3841 DEFER_GETTEXT ("IOT instruction"), /* 6 SIGIOT */
|
|
|
3842 DEFER_GETTEXT ("crash likely"), /* 7 SIGDANGER */
|
|
|
3843 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */
|
|
|
3844 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */
|
|
|
3845 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */
|
|
|
3846 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */
|
|
|
3847 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */
|
|
|
3848 DEFER_GETTEXT ("write on a pipe with no one to read it"), /* 13 SIGPIPE */
|
|
|
3849 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */
|
|
|
3850 DEFER_GETTEXT ("software termination signal"), /* 15 SIGTERM */
|
|
|
3851 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */
|
|
|
3852 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */
|
|
|
3853 DEFER_GETTEXT ("death of a child"), /* 18 SIGCLD */
|
|
|
3854 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */
|
|
|
3855 DEFER_GETTEXT ("bogus signal"), /* 20 */
|
|
|
3856 DEFER_GETTEXT ("bogus signal"), /* 21 */
|
|
|
3857 DEFER_GETTEXT ("bogus signal"), /* 22 */
|
|
|
3858 DEFER_GETTEXT ("bogus signal"), /* 23 */
|
|
|
3859 DEFER_GETTEXT ("bogus signal"), /* 24 */
|
|
|
3860 DEFER_GETTEXT ("LAN I/O interrupt"), /* 25 SIGAIO */
|
|
|
3861 DEFER_GETTEXT ("PTY I/O interrupt"), /* 26 SIGPTY */
|
|
|
3862 DEFER_GETTEXT ("I/O intervention required"), /* 27 SIGIOINT */
|
|
428
|
3863 #ifdef AIXHFT
|
|
771
|
3864 "HFT grant", /* 28 SIGGRANT */
|
|
|
3865 "HFT retract", /* 29 SIGRETRACT */
|
|
|
3866 "HFT sound done", /* 30 SIGSOUND */
|
|
|
3867 "HFT input ready", /* 31 SIGMSG */
|
|
428
|
3868 #endif
|
|
771
|
3869 /* $$####end-snarf */
|
|
428
|
3870 0
|
|
|
3871 };
|
|
|
3872 #else /* USG, not AIX */
|
|
442
|
3873 const char *sys_siglist[NSIG + 1] =
|
|
428
|
3874 {
|
|
863
|
3875 DEFER_GETTEXT ("bogus signal"), /* 0 */
|
|
|
3876 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */
|
|
|
3877 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */
|
|
|
3878 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */
|
|
|
3879 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */
|
|
|
3880 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */
|
|
|
3881 DEFER_GETTEXT ("IOT instruction"), /* 6 SIGIOT */
|
|
|
3882 DEFER_GETTEXT ("EMT instruction"), /* 7 SIGEMT */
|
|
|
3883 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */
|
|
|
3884 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */
|
|
|
3885 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */
|
|
|
3886 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */
|
|
|
3887 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */
|
|
|
3888 DEFER_GETTEXT ("write on a pipe with no one to read it"), /* 13 SIGPIPE */
|
|
|
3889 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */
|
|
|
3890 DEFER_GETTEXT ("software termination signal"), /* 15 SIGTERM */
|
|
|
3891 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */
|
|
|
3892 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */
|
|
|
3893 DEFER_GETTEXT ("death of a child"), /* 18 SIGCLD */
|
|
|
3894 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */
|
|
428
|
3895 #ifdef sun
|
|
771
|
3896 "window size changed", /* 20 SIGWINCH */
|
|
|
3897 "urgent socket condition", /* 21 SIGURG */
|
|
|
3898 "pollable event occurred", /* 22 SIGPOLL */
|
|
|
3899 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
|
|
|
3900 "user stop requested from tty", /* 24 SIGTSTP */
|
|
|
3901 "stopped process has been continued", /* 25 SIGCONT */
|
|
|
3902 "background tty read attempted", /* 26 SIGTTIN */
|
|
|
3903 "background tty write attempted", /* 27 SIGTTOU */
|
|
|
3904 "virtual timer expired", /* 28 SIGVTALRM */
|
|
|
3905 "profiling timer expired", /* 29 SIGPROF */
|
|
|
3906 "exceeded cpu limit", /* 30 SIGXCPU */
|
|
|
3907 "exceeded file size limit", /* 31 SIGXFSZ */
|
|
|
3908 "process's lwps are blocked", /* 32 SIGWAITING */
|
|
|
3909 "special signal used by thread library", /* 33 SIGLWP */
|
|
428
|
3910 #ifdef SIGFREEZE
|
|
771
|
3911 "special signal used by CPR", /* 34 SIGFREEZE */
|
|
428
|
3912 #endif
|
|
|
3913 #ifdef SIGTHAW
|
|
771
|
3914 "special signal used by CPR", /* 35 SIGTHAW */
|
|
428
|
3915 #endif
|
|
|
3916 #endif /* sun */
|
|
771
|
3917 /* $$####end-snarf */
|
|
428
|
3918 0
|
|
|
3919 };
|
|
|
3920 #endif /* not AIX */
|
|
|
3921 #endif /* USG */
|
|
|
3922 #ifdef DGUX
|
|
442
|
3923 const char *sys_siglist[NSIG + 1] =
|
|
428
|
3924 {
|
|
771
|
3925 /* $$####begin-snarf */
|
|
|
3926 "null signal", /* 0 SIGNULL */
|
|
|
3927 "hangup", /* 1 SIGHUP */
|
|
|
3928 "interrupt", /* 2 SIGINT */
|
|
|
3929 "quit", /* 3 SIGQUIT */
|
|
|
3930 "illegal instruction", /* 4 SIGILL */
|
|
|
3931 "trace trap", /* 5 SIGTRAP */
|
|
|
3932 "abort termination", /* 6 SIGABRT */
|
|
|
3933 "SIGEMT", /* 7 SIGEMT */
|
|
|
3934 "floating point exception", /* 8 SIGFPE */
|
|
|
3935 "kill", /* 9 SIGKILL */
|
|
|
3936 "bus error", /* 10 SIGBUS */
|
|
|
3937 "segmentation violation", /* 11 SIGSEGV */
|
|
|
3938 "bad argument to system call", /* 12 SIGSYS */
|
|
|
3939 "write on a pipe with no reader", /* 13 SIGPIPE */
|
|
|
3940 "alarm clock", /* 14 SIGALRM */
|
|
|
3941 "software termination signal", /* 15 SIGTERM */
|
|
|
3942 "user defined signal 1", /* 16 SIGUSR1 */
|
|
|
3943 "user defined signal 2", /* 17 SIGUSR2 */
|
|
|
3944 "child stopped or terminated", /* 18 SIGCLD */
|
|
|
3945 "power-fail restart", /* 19 SIGPWR */
|
|
|
3946 "window size changed", /* 20 SIGWINCH */
|
|
|
3947 "undefined", /* 21 */
|
|
|
3948 "pollable event occurred", /* 22 SIGPOLL */
|
|
|
3949 "sendable stop signal not from tty", /* 23 SIGSTOP */
|
|
|
3950 "stop signal from tty", /* 24 SIGSTP */
|
|
|
3951 "continue a stopped process", /* 25 SIGCONT */
|
|
|
3952 "attempted background tty read", /* 26 SIGTTIN */
|
|
|
3953 "attempted background tty write", /* 27 SIGTTOU */
|
|
|
3954 "undefined", /* 28 */
|
|
|
3955 "undefined", /* 29 */
|
|
|
3956 "undefined", /* 30 */
|
|
|
3957 "undefined", /* 31 */
|
|
|
3958 "undefined", /* 32 */
|
|
|
3959 "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
|
|
|
3960 "I/O is possible", /* 34 SIGIO */
|
|
|
3961 "exceeded cpu time limit", /* 35 SIGXCPU */
|
|
|
3962 "exceeded file size limit", /* 36 SIGXFSZ */
|
|
|
3963 "virtual time alarm", /* 37 SIGVTALRM */
|
|
|
3964 "profiling time alarm", /* 38 SIGPROF */
|
|
|
3965 "undefined", /* 39 */
|
|
|
3966 "file record locks revoked", /* 40 SIGLOST */
|
|
|
3967 "undefined", /* 41 */
|
|
|
3968 "undefined", /* 42 */
|
|
|
3969 "undefined", /* 43 */
|
|
|
3970 "undefined", /* 44 */
|
|
|
3971 "undefined", /* 45 */
|
|
|
3972 "undefined", /* 46 */
|
|
|
3973 "undefined", /* 47 */
|
|
|
3974 "undefined", /* 48 */
|
|
|
3975 "undefined", /* 49 */
|
|
|
3976 "undefined", /* 50 */
|
|
|
3977 "undefined", /* 51 */
|
|
|
3978 "undefined", /* 52 */
|
|
|
3979 "undefined", /* 53 */
|
|
|
3980 "undefined", /* 54 */
|
|
|
3981 "undefined", /* 55 */
|
|
|
3982 "undefined", /* 56 */
|
|
|
3983 "undefined", /* 57 */
|
|
|
3984 "undefined", /* 58 */
|
|
|
3985 "undefined", /* 59 */
|
|
|
3986 "undefined", /* 60 */
|
|
|
3987 "undefined", /* 61 */
|
|
|
3988 "undefined", /* 62 */
|
|
|
3989 "undefined", /* 63 */
|
|
|
3990 "notification message in mess. queue", /* 64 SIGDGNOTIFY */
|
|
|
3991 /* $$####end-snarf */
|
|
428
|
3992 0
|
|
|
3993 };
|
|
|
3994 #endif /* DGUX */
|
|
|
3995
|
|
|
3996 #endif /* ! SYS_SIGLIST_DECLARED && ! HAVE_SYS_SIGLIST */
|
|
|
3997
|
|
|
3998
|
|
|
3999 /************************************************************************/
|
|
|
4000 /* Directory routines for systems that don't have them */
|
|
|
4001 /************************************************************************/
|
|
|
4002
|
|
|
4003 #ifdef SYSV_SYSTEM_DIR
|
|
|
4004
|
|
|
4005 #include <dirent.h>
|
|
|
4006
|
|
|
4007 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
|
|
|
4008 int
|
|
|
4009 closedir (DIR *dirp) /* stream from opendir */
|
|
|
4010 {
|
|
|
4011 int rtnval;
|
|
|
4012
|
|
771
|
4013 rtnval = retry_close (dirp->dd_fd);
|
|
428
|
4014
|
|
|
4015 /* Some systems (like Solaris) allocate the buffer and the DIR all
|
|
|
4016 in one block. Why in the world are we freeing this ourselves
|
|
|
4017 anyway? */
|
|
|
4018 #if ! (defined (sun) && defined (USG5_4))
|
|
1726
|
4019 xfree (dirp->dd_buf, char *); /* directory block defined in <dirent.h> */
|
|
428
|
4020 #endif
|
|
1726
|
4021 xfree (dirp, DIR *);
|
|
428
|
4022 return (rtnval);
|
|
|
4023 }
|
|
|
4024 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
|
|
|
4025 #endif /* SYSV_SYSTEM_DIR */
|
|
|
4026
|
|
|
4027 #ifdef NONSYSTEM_DIR_LIBRARY
|
|
|
4028
|
|
|
4029 DIR *
|
|
442
|
4030 opendir (const char *filename) /* name of directory */
|
|
428
|
4031 {
|
|
|
4032 DIR *dirp; /* -> malloc'ed storage */
|
|
|
4033 int fd; /* file descriptor for read */
|
|
|
4034 struct stat sbuf; /* result of fstat */
|
|
|
4035
|
|
771
|
4036 fd = open (filename, O_RDONLY);
|
|
428
|
4037 if (fd < 0)
|
|
|
4038 return 0;
|
|
|
4039
|
|
|
4040 if (fstat (fd, &sbuf) < 0
|
|
|
4041 || (sbuf.st_mode & S_IFMT) != S_IFDIR
|
|
|
4042 || (dirp = (DIR *) malloc (sizeof (DIR))) == 0)
|
|
|
4043 {
|
|
771
|
4044 retry_close (fd);
|
|
428
|
4045 return 0; /* bad luck today */
|
|
|
4046 }
|
|
|
4047
|
|
|
4048 dirp->dd_fd = fd;
|
|
|
4049 dirp->dd_loc = dirp->dd_size = 0; /* refill needed */
|
|
|
4050
|
|
|
4051 return dirp;
|
|
|
4052 }
|
|
|
4053
|
|
|
4054 void
|
|
|
4055 closedir (DIR *dirp) /* stream from opendir */
|
|
|
4056 {
|
|
771
|
4057 retry_close (dirp->dd_fd);
|
|
1726
|
4058 xfree (dirp, DIR *);
|
|
428
|
4059 }
|
|
|
4060
|
|
|
4061
|
|
|
4062 #define DIRSIZ 14
|
|
|
4063 struct olddir
|
|
|
4064 {
|
|
|
4065 ino_t od_ino; /* inode */
|
|
|
4066 char od_name[DIRSIZ]; /* filename */
|
|
|
4067 };
|
|
|
4068
|
|
|
4069 static struct direct dir_static; /* simulated directory contents */
|
|
|
4070
|
|
|
4071 /* ARGUSED */
|
|
|
4072 struct direct *
|
|
|
4073 readdir (DIR *dirp) /* stream from opendir */
|
|
|
4074 {
|
|
|
4075 struct olddir *dp; /* -> directory data */
|
|
|
4076
|
|
|
4077 for (; ;)
|
|
|
4078 {
|
|
|
4079 if (dirp->dd_loc >= dirp->dd_size)
|
|
|
4080 dirp->dd_loc = dirp->dd_size = 0;
|
|
|
4081
|
|
|
4082 if (dirp->dd_size == 0 /* refill buffer */
|
|
771
|
4083 && (dirp->dd_size =
|
|
|
4084 retry_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0)
|
|
428
|
4085 return 0;
|
|
|
4086
|
|
|
4087 dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc];
|
|
|
4088 dirp->dd_loc += sizeof (struct olddir);
|
|
|
4089
|
|
|
4090 if (dp->od_ino != 0) /* not deleted entry */
|
|
|
4091 {
|
|
|
4092 dir_static.d_ino = dp->od_ino;
|
|
|
4093 strncpy (dir_static.d_name, dp->od_name, DIRSIZ);
|
|
|
4094 dir_static.d_name[DIRSIZ] = '\0';
|
|
|
4095 dir_static.d_namlen = strlen (dir_static.d_name);
|
|
|
4096 dir_static.d_reclen = sizeof (struct direct)
|
|
|
4097 - MAXNAMLEN + 3
|
|
|
4098 + dir_static.d_namlen - dir_static.d_namlen % 4;
|
|
|
4099 return &dir_static; /* -> simulated structure */
|
|
|
4100 }
|
|
|
4101 }
|
|
|
4102 }
|
|
|
4103
|
|
|
4104
|
|
|
4105 #endif /* NONSYSTEM_DIR_LIBRARY */
|
|
|
4106
|
|
|
4107
|
|
|
4108 /* mkdir and rmdir functions, for systems which don't have them. */
|
|
|
4109
|
|
|
4110 #ifndef HAVE_MKDIR
|
|
|
4111 /*
|
|
|
4112 * Written by Robert Rother, Mariah Corporation, August 1985.
|
|
|
4113 *
|
|
|
4114 * If you want it, it's yours. All I ask in return is that if you
|
|
|
4115 * figure out how to do this in a Bourne Shell script you send me
|
|
|
4116 * a copy.
|
|
|
4117 * sdcsvax!rmr or rmr@uscd
|
|
|
4118 *
|
|
|
4119 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
|
|
|
4120 * subroutine. 11Mar86; hoptoad!gnu
|
|
|
4121 *
|
|
|
4122 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
|
|
|
4123 * subroutine didn't return EEXIST. It does now.
|
|
|
4124 */
|
|
|
4125
|
|
|
4126 /*
|
|
|
4127 * Make a directory.
|
|
|
4128 */
|
|
|
4129 #ifdef MKDIR_PROTOTYPE
|
|
|
4130 MKDIR_PROTOTYPE
|
|
|
4131 #else
|
|
|
4132 int
|
|
442
|
4133 mkdir (const char *dpath, int dmode)
|
|
428
|
4134 #endif
|
|
|
4135 {
|
|
|
4136 int cpid, status, fd;
|
|
|
4137 struct stat statbuf;
|
|
|
4138
|
|
442
|
4139 if (stat (dpath, &statbuf) == 0) /* we do want stat() here */
|
|
428
|
4140 {
|
|
|
4141 errno = EEXIST; /* Stat worked, so it already exists */
|
|
|
4142 return -1;
|
|
|
4143 }
|
|
|
4144
|
|
|
4145 /* If stat fails for a reason other than non-existence, return error */
|
|
|
4146 if (errno != ENOENT)
|
|
|
4147 return -1;
|
|
|
4148
|
|
|
4149 synch_process_alive = 1;
|
|
|
4150 switch (cpid = fork ())
|
|
|
4151 {
|
|
|
4152
|
|
|
4153 case -1: /* Error in fork() */
|
|
|
4154 return -1; /* Errno is set already */
|
|
|
4155
|
|
|
4156 case 0: /* Child process */
|
|
|
4157 {
|
|
|
4158 /*
|
|
|
4159 * Cheap hack to set mode of new directory. Since this
|
|
|
4160 * child process is going away anyway, we zap its umask.
|
|
|
4161 * ####, this won't suffice to set SUID, SGID, etc. on this
|
|
|
4162 * directory. Does anybody care?
|
|
|
4163 */
|
|
|
4164 status = umask (0); /* Get current umask */
|
|
|
4165 status = umask (status | (0777 & ~dmode)); /* Set for mkdir */
|
|
771
|
4166 fd = open ("/dev/null", O_RDWR);
|
|
428
|
4167 if (fd >= 0)
|
|
|
4168 {
|
|
|
4169 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO);
|
|
|
4170 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO);
|
|
|
4171 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO);
|
|
|
4172 }
|
|
|
4173 execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
|
|
|
4174 _exit (-1); /* Can't exec /bin/mkdir */
|
|
|
4175 }
|
|
|
4176
|
|
|
4177 default: /* Parent process */
|
|
|
4178 wait_for_termination (cpid);
|
|
|
4179 }
|
|
|
4180
|
|
|
4181 if (synch_process_death != 0 || synch_process_retcode != 0)
|
|
|
4182 {
|
|
|
4183 errno = EIO; /* We don't know why, but */
|
|
|
4184 return -1; /* /bin/mkdir failed */
|
|
|
4185 }
|
|
|
4186
|
|
|
4187 return 0;
|
|
|
4188 }
|
|
|
4189 #endif /* not HAVE_MKDIR */
|
|
|
4190
|
|
|
4191 #ifndef HAVE_RMDIR
|
|
|
4192 int
|
|
442
|
4193 rmdir (const char *dpath)
|
|
428
|
4194 {
|
|
|
4195 int cpid, status, fd;
|
|
|
4196 struct stat statbuf;
|
|
|
4197
|
|
442
|
4198 if (stat (dpath, &statbuf) != 0) /* we do want stat() here */
|
|
428
|
4199 {
|
|
|
4200 /* Stat just set errno. We don't have to */
|
|
|
4201 return -1;
|
|
|
4202 }
|
|
|
4203
|
|
|
4204 synch_process_alive = 1;
|
|
|
4205 switch (cpid = fork ())
|
|
|
4206 {
|
|
|
4207
|
|
|
4208 case -1: /* Error in fork() */
|
|
|
4209 return (-1); /* Errno is set already */
|
|
|
4210
|
|
|
4211 case 0: /* Child process */
|
|
771
|
4212 fd = open ("/dev/null", O_RDWR);
|
|
428
|
4213 if (fd >= 0)
|
|
|
4214 {
|
|
|
4215 if (fd != STDIN_FILENO) dup2 (fd, STDIN_FILENO);
|
|
|
4216 if (fd != STDOUT_FILENO) dup2 (fd, STDOUT_FILENO);
|
|
|
4217 if (fd != STDERR_FILENO) dup2 (fd, STDERR_FILENO);
|
|
|
4218 }
|
|
|
4219 execl ("/bin/rmdir", "rmdir", dpath, (char *) 0);
|
|
|
4220 _exit (-1); /* Can't exec /bin/mkdir */
|
|
|
4221
|
|
|
4222 default: /* Parent process */
|
|
|
4223 wait_for_termination (cpid);
|
|
|
4224 }
|
|
|
4225
|
|
|
4226 if (synch_process_death != 0 ||
|
|
|
4227 synch_process_retcode != 0)
|
|
|
4228 {
|
|
|
4229 errno = EIO; /* We don't know why, but */
|
|
|
4230 return -1; /* /bin/rmdir failed */
|
|
|
4231 }
|
|
|
4232
|
|
|
4233 return 0;
|
|
|
4234 }
|
|
|
4235 #endif /* !HAVE_RMDIR */
|
|
|
4236
|
|
|
4237
|
|
|
4238 /************************************************************************/
|
|
|
4239 /* Misc. SunOS crap */
|
|
|
4240 /************************************************************************/
|
|
|
4241
|
|
|
4242 #ifdef USE_DL_STUBS
|
|
|
4243
|
|
|
4244 /* These are included on Sunos 4.1 when we do not use shared libraries.
|
|
|
4245 X11 libraries may refer to these functions but (we hope) do not
|
|
|
4246 actually call them. */
|
|
|
4247
|
|
|
4248 void *
|
|
|
4249 dlopen (void)
|
|
|
4250 {
|
|
|
4251 return 0;
|
|
|
4252 }
|
|
|
4253
|
|
|
4254 void *
|
|
|
4255 dlsym (void)
|
|
|
4256 {
|
|
|
4257 return 0;
|
|
|
4258 }
|
|
|
4259
|
|
|
4260 int
|
|
|
4261 dlclose (void)
|
|
|
4262 {
|
|
|
4263 return -1;
|
|
|
4264 }
|
|
|
4265
|
|
|
4266 #endif /* USE_DL_STUBS */
|
