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dcfdbac7 | 1 | /* Interfaces to subprocesses on VMS. |
3a22ee35 | 2 | Copyright (C) 1988, 1994 Free Software Foundation, Inc. |
dcfdbac7 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
dcfdbac7 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | /* | |
22 | Event flag and `select' emulation | |
23 | ||
24 | 0 is never used | |
25 | 1 is the terminal | |
26 | 23 is the timer event flag | |
27 | 24-31 are reserved by VMS | |
28 | */ | |
0bc439a0 | 29 | #include <config.h> |
dcfdbac7 JB |
30 | #include <ssdef.h> |
31 | #include <iodef.h> | |
32 | #include <dvidef.h> | |
33 | #include <clidef.h> | |
34 | #include "vmsproc.h" | |
0bc439a0 RS |
35 | #include "lisp.h" |
36 | #include "buffer.h" | |
37 | #include <file.h> | |
38 | #include "process.h" | |
39 | #include "commands.h" | |
40 | #include <errno.h> | |
41 | extern Lisp_Object call_process_cleanup (); | |
42 | ||
dcfdbac7 JB |
43 | |
44 | #define KEYBOARD_EVENT_FLAG 1 | |
45 | #define TIMER_EVENT_FLAG 23 | |
46 | ||
47 | static VMS_PROC_STUFF procList[MAX_EVENT_FLAGS+1]; | |
48 | ||
49 | get_kbd_event_flag () | |
50 | { | |
51 | /* | |
52 | Return the first event flag for keyboard input. | |
53 | */ | |
54 | VMS_PROC_STUFF *vs = &procList[KEYBOARD_EVENT_FLAG]; | |
55 | ||
56 | vs->busy = 1; | |
57 | vs->pid = 0; | |
58 | return (vs->eventFlag); | |
59 | } | |
60 | ||
61 | get_timer_event_flag () | |
62 | { | |
63 | /* | |
64 | Return the last event flag for use by timeouts | |
65 | */ | |
66 | VMS_PROC_STUFF *vs = &procList[TIMER_EVENT_FLAG]; | |
67 | ||
68 | vs->busy = 1; | |
69 | vs->pid = 0; | |
70 | return (vs->eventFlag); | |
71 | } | |
72 | ||
73 | VMS_PROC_STUFF * | |
74 | get_vms_process_stuff () | |
75 | { | |
76 | /* | |
77 | Return a process_stuff structure | |
78 | ||
79 | We use 1-23 as our event flags to simplify implementing | |
80 | a VMS `select' call. | |
81 | */ | |
82 | int i; | |
83 | VMS_PROC_STUFF *vs; | |
84 | ||
85 | for (i=1, vs = procList; i<MAX_EVENT_FLAGS; i++, vs++) | |
86 | { | |
87 | if (!vs->busy) | |
88 | { | |
89 | vs->busy = 1; | |
90 | vs->inputChan = 0; | |
91 | vs->pid = 0; | |
92 | sys$clref (vs->eventFlag); | |
93 | return (vs); | |
94 | } | |
95 | } | |
96 | return ((VMS_PROC_STUFF *)0); | |
97 | } | |
98 | ||
99 | give_back_vms_process_stuff (vs) | |
100 | VMS_PROC_STUFF *vs; | |
101 | { | |
102 | /* | |
103 | Return an event flag to our pool | |
104 | */ | |
105 | vs->busy = 0; | |
106 | vs->inputChan = 0; | |
107 | vs->pid = 0; | |
108 | } | |
109 | ||
110 | VMS_PROC_STUFF * | |
111 | get_vms_process_pointer (pid) | |
112 | int pid; | |
113 | { | |
114 | /* | |
115 | Given a pid, return the VMS_STUFF pointer | |
116 | */ | |
117 | int i; | |
118 | VMS_PROC_STUFF *vs; | |
119 | ||
120 | /* Don't search the last one */ | |
121 | for (i=0, vs=procList; i<MAX_EVENT_FLAGS; i++, vs++) | |
122 | { | |
123 | if (vs->busy && vs->pid == pid) | |
124 | return (vs); | |
125 | } | |
126 | return ((VMS_PROC_STUFF *)0); | |
127 | } | |
128 | ||
129 | start_vms_process_read (vs) | |
130 | VMS_PROC_STUFF *vs; | |
131 | { | |
132 | /* | |
133 | Start an asynchronous read on a VMS process | |
134 | We will catch up with the output sooner or later | |
135 | */ | |
136 | int status; | |
137 | int ProcAst (); | |
138 | ||
139 | status = sys$qio (vs->eventFlag, vs->outputChan, IO$_READVBLK, | |
140 | vs->iosb, 0, vs, | |
141 | vs->inputBuffer, sizeof (vs->inputBuffer), 0, 0, 0, 0); | |
142 | if (status != SS$_NORMAL) | |
143 | return (0); | |
144 | else | |
145 | return (1); | |
146 | } | |
147 | ||
148 | extern int waiting_for_ast; /* in sysdep.c */ | |
149 | extern int timer_ef; | |
150 | extern int input_ef; | |
151 | ||
152 | select (nDesc, rdsc, wdsc, edsc, timeOut) | |
153 | int nDesc; | |
154 | int *rdsc; | |
155 | int *wdsc; | |
156 | int *edsc; | |
157 | int *timeOut; | |
158 | { | |
159 | /* Emulate a select call | |
160 | ||
161 | We know that we only use event flags 1-23 | |
162 | ||
163 | timeout == 100000 & bit 0 set means wait on keyboard input until | |
164 | something shows up. If timeout == 0, we just read the event | |
165 | flags and return what we find. */ | |
166 | ||
167 | int nfds = 0; | |
168 | int status; | |
169 | int time[2]; | |
170 | int delta = -10000000; | |
171 | int zero = 0; | |
172 | int timeout = *timeOut; | |
173 | unsigned long mask, readMask, waitMask; | |
174 | ||
175 | if (rdsc) | |
176 | readMask = *rdsc << 1; /* Unix mask is shifted over 1 */ | |
177 | else | |
178 | readMask = 0; /* Must be a wait call */ | |
179 | ||
180 | sys$clref (KEYBOARD_EVENT_FLAG); | |
181 | sys$setast (0); /* Block interrupts */ | |
182 | sys$readef (KEYBOARD_EVENT_FLAG, &mask); /* See what is set */ | |
183 | mask &= readMask; /* Just examine what we need */ | |
184 | if (mask == 0) | |
185 | { /* Nothing set, we must wait */ | |
186 | if (timeout != 0) | |
187 | { /* Not just inspecting... */ | |
188 | if (!(timeout == 100000 && | |
189 | readMask == (1 << KEYBOARD_EVENT_FLAG))) | |
190 | { | |
191 | lib$emul (&timeout, &delta, &zero, time); | |
192 | sys$setimr (TIMER_EVENT_FLAG, time, 0, 1); | |
193 | waitMask = readMask | (1 << TIMER_EVENT_FLAG); | |
194 | } | |
195 | else | |
196 | waitMask = readMask; | |
197 | if (waitMask & (1 << KEYBOARD_EVENT_FLAG)) | |
198 | { | |
199 | sys$clref (KEYBOARD_EVENT_FLAG); | |
200 | waiting_for_ast = 1; /* Only if reading from 0 */ | |
201 | } | |
202 | sys$setast (1); | |
203 | sys$wflor (KEYBOARD_EVENT_FLAG, waitMask); | |
204 | sys$cantim (1, 0); | |
205 | sys$readef (KEYBOARD_EVENT_FLAG, &mask); | |
206 | if (readMask & (1 << KEYBOARD_EVENT_FLAG)) | |
207 | waiting_for_ast = 0; | |
208 | } | |
209 | } | |
210 | sys$setast (1); | |
211 | ||
212 | /* | |
213 | Count number of descriptors that are ready | |
214 | */ | |
215 | mask &= readMask; | |
216 | if (rdsc) | |
217 | *rdsc = (mask >> 1); /* Back to Unix format */ | |
218 | for (nfds = 0; mask; mask >>= 1) | |
219 | { | |
220 | if (mask & 1) | |
221 | nfds++; | |
222 | } | |
223 | return (nfds); | |
224 | } | |
225 | ||
226 | #define MAX_BUFF 1024 | |
227 | ||
228 | write_to_vms_process (vs, buf, len) | |
229 | VMS_PROC_STUFF *vs; | |
230 | char *buf; | |
231 | int len; | |
232 | { | |
233 | /* | |
234 | Write something to a VMS process. | |
235 | ||
236 | We have to map newlines to carriage returns for VMS. | |
237 | */ | |
238 | char ourBuff[MAX_BUFF]; | |
239 | short iosb[4]; | |
240 | int status; | |
241 | int in, out; | |
242 | ||
243 | while (len > 0) | |
244 | { | |
245 | out = map_nl_to_cr (buf, ourBuff, len, MAX_BUFF); | |
246 | status = sys$qiow (0, vs->inputChan, IO$_WRITEVBLK|IO$M_NOFORMAT, | |
247 | iosb, 0, 0, ourBuff, out, 0, 0, 0, 0); | |
248 | if (status != SS$_NORMAL || (status = iosb[0]) != SS$_NORMAL) | |
249 | { | |
250 | error ("Could not write to subprocess: %x", status); | |
251 | return (0); | |
252 | } | |
0bc439a0 | 253 | len -= out; |
dcfdbac7 JB |
254 | } |
255 | return (1); | |
256 | } | |
257 | ||
258 | static | |
259 | map_nl_to_cr (in, out, maxIn, maxOut) | |
260 | char *in; | |
261 | char *out; | |
262 | int maxIn; | |
263 | int maxOut; | |
264 | { | |
265 | /* | |
266 | Copy `in' to `out' remapping `\n' to `\r' | |
267 | */ | |
268 | int c; | |
269 | int o; | |
270 | ||
271 | for (o=0; maxIn-- > 0 && o < maxOut; o++) | |
272 | { | |
273 | c = *in++; | |
274 | *out++ = (c == '\n') ? '\r' : c; | |
275 | } | |
276 | return (o); | |
277 | } | |
278 | ||
279 | clean_vms_buffer (buf, len) | |
280 | char *buf; | |
281 | int len; | |
282 | { | |
283 | /* | |
284 | Sanitize output from a VMS subprocess | |
285 | Strip CR's and NULLs | |
286 | */ | |
287 | char *oBuf = buf; | |
288 | char c; | |
289 | int l = 0; | |
290 | ||
291 | while (len-- > 0) | |
292 | { | |
293 | c = *buf++; | |
294 | if (c == '\r' || c == '\0') | |
295 | ; | |
296 | else | |
297 | { | |
298 | *oBuf++ = c; | |
299 | l++; | |
300 | } | |
301 | } | |
302 | return (l); | |
303 | } | |
304 | ||
305 | /* | |
306 | For the CMU PTY driver | |
307 | */ | |
308 | #define PTYNAME "PYA0:" | |
309 | ||
310 | get_pty_channel (inDevName, outDevName, inChannel, outChannel) | |
311 | char *inDevName; | |
312 | char *outDevName; | |
313 | int *inChannel; | |
314 | int *outChannel; | |
315 | { | |
316 | int PartnerUnitNumber; | |
317 | int status; | |
318 | struct { | |
319 | int l; | |
320 | char *a; | |
321 | } d; | |
322 | struct { | |
323 | short BufLen; | |
324 | short ItemCode; | |
325 | int *BufAddress; | |
326 | int *ItemLength; | |
327 | } g[2]; | |
328 | ||
329 | d.l = strlen (PTYNAME); | |
330 | d.a = PTYNAME; | |
331 | *inChannel = 0; /* Should be `short' on VMS */ | |
332 | *outChannel = 0; | |
333 | *inDevName = *outDevName = '\0'; | |
334 | status = sys$assign (&d, inChannel, 0, 0); | |
335 | if (status == SS$_NORMAL) | |
336 | { | |
337 | *outChannel = *inChannel; | |
338 | g[0].BufLen = sizeof (PartnerUnitNumber); | |
339 | g[0].ItemCode = DVI$_UNIT; | |
340 | g[0].BufAddress = &PartnerUnitNumber; | |
341 | g[0].ItemLength = (int *)0; | |
342 | g[1].BufLen = g[1].ItemCode = 0; | |
343 | status = sys$getdviw (0, *inChannel, 0, &g, 0, 0, 0, 0); | |
344 | if (status == SS$_NORMAL) | |
345 | { | |
346 | sprintf (inDevName, "_TPA%d:", PartnerUnitNumber); | |
347 | strcpy (outDevName, inDevName); | |
348 | } | |
349 | } | |
350 | return (status); | |
351 | } | |
352 | ||
353 | VMSgetwd (buf) | |
354 | char *buf; | |
355 | { | |
356 | /* | |
357 | Return the current directory | |
358 | */ | |
359 | char curdir[256]; | |
360 | char *getenv (); | |
361 | char *s; | |
362 | short len; | |
363 | int status; | |
364 | struct | |
365 | { | |
366 | int l; | |
367 | char *a; | |
368 | } d; | |
369 | ||
370 | s = getenv ("SYS$DISK"); | |
371 | if (s) | |
372 | strcpy (buf, s); | |
373 | else | |
374 | *buf = '\0'; | |
375 | ||
376 | d.l = 255; | |
377 | d.a = curdir; | |
378 | status = sys$setddir (0, &len, &d); | |
379 | if (status & 1) | |
380 | { | |
381 | curdir[len] = '\0'; | |
382 | strcat (buf, curdir); | |
383 | } | |
384 | } | |
385 | \f | |
386 | static | |
387 | call_process_ast (vs) | |
388 | VMS_PROC_STUFF *vs; | |
389 | { | |
390 | sys$setef (vs->eventFlag); | |
391 | } | |
392 | ||
393 | void | |
394 | child_setup (in, out, err, new_argv, env) | |
395 | int in, out, err; | |
396 | register char **new_argv; | |
397 | char **env; | |
398 | { | |
399 | /* ??? I suspect that maybe this shouldn't be done on VMS. */ | |
400 | #ifdef subprocesses | |
401 | /* Close Emacs's descriptors that this process should not have. */ | |
402 | close_process_descs (); | |
403 | #endif | |
404 | ||
c426bed2 | 405 | if (STRINGP (current_buffer->directory)) |
dcfdbac7 JB |
406 | chdir (XSTRING (current_buffer->directory)->data); |
407 | } | |
408 | ||
409 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
410 | "Call PROGRAM synchronously in a separate process.\n\ | |
411 | Program's input comes from file INFILE (nil means null device, `NLA0:').\n\ | |
412 | Insert output in BUFFER before point; t means current buffer;\n\ | |
413 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
414 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ | |
415 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
416 | This function waits for PROGRAM to terminate, unless BUFFER is 0;\n\ | |
417 | if you quit, the process is killed.") | |
418 | (nargs, args) | |
419 | int nargs; | |
420 | register Lisp_Object *args; | |
421 | { | |
422 | Lisp_Object display, buffer, path; | |
423 | char oldDir[512]; | |
424 | int inchannel, outchannel; | |
425 | int len; | |
426 | int call_process_ast (); | |
427 | struct | |
428 | { | |
429 | int l; | |
430 | char *a; | |
431 | } dcmd, din, dout; | |
432 | char inDevName[65]; | |
433 | char outDevName[65]; | |
434 | short iosb[4]; | |
435 | int status; | |
436 | int SpawnFlags = CLI$M_NOWAIT; | |
437 | VMS_PROC_STUFF *vs; | |
438 | VMS_PROC_STUFF *get_vms_process_stuff (); | |
439 | int fd[2]; | |
440 | int filefd; | |
441 | register int pid; | |
442 | char buf[1024]; | |
443 | int count = specpdl_ptr - specpdl; | |
444 | register unsigned char **new_argv; | |
445 | struct buffer *old = current_buffer; | |
446 | ||
447 | CHECK_STRING (args[0], 0); | |
448 | ||
d427b66a | 449 | if (nargs <= 1 || NILP (args[1])) |
dcfdbac7 JB |
450 | args[1] = build_string ("NLA0:"); |
451 | else | |
452 | args[1] = Fexpand_file_name (args[1], current_buffer->directory); | |
453 | ||
454 | CHECK_STRING (args[1], 1); | |
455 | ||
456 | { | |
457 | register Lisp_Object tem; | |
458 | buffer = tem = args[2]; | |
459 | if (nargs <= 2) | |
460 | buffer = Qnil; | |
461 | else if (!(EQ (tem, Qnil) || EQ (tem, Qt) | |
462 | || XFASTINT (tem) == 0)) | |
463 | { | |
464 | buffer = Fget_buffer (tem); | |
465 | CHECK_BUFFER (buffer, 2); | |
466 | } | |
467 | } | |
468 | ||
469 | display = nargs >= 3 ? args[3] : Qnil; | |
470 | ||
471 | { | |
472 | /* | |
473 | if (args[0] == "*dcl*" then we need to skip pas the "-c", | |
474 | else args[0] is the program to run. | |
475 | */ | |
476 | register int i; | |
477 | int arg0; | |
478 | int firstArg; | |
479 | ||
480 | if (strcmp (XSTRING (args[0])->data, "*dcl*") == 0) | |
481 | { | |
482 | arg0 = 5; | |
483 | firstArg = 6; | |
484 | } | |
485 | else | |
486 | { | |
487 | arg0 = 0; | |
488 | firstArg = 4; | |
489 | } | |
490 | len = XSTRING (args[arg0])->size + 1; | |
491 | for (i = firstArg; i < nargs; i++) | |
492 | { | |
493 | CHECK_STRING (args[i], i); | |
494 | len += XSTRING (args[i])->size + 1; | |
495 | } | |
496 | new_argv = alloca (len); | |
497 | strcpy (new_argv, XSTRING (args[arg0])->data); | |
498 | for (i = firstArg; i < nargs; i++) | |
499 | { | |
500 | strcat (new_argv, " "); | |
501 | strcat (new_argv, XSTRING (args[i])->data); | |
502 | } | |
503 | dcmd.l = len-1; | |
504 | dcmd.a = new_argv; | |
505 | ||
506 | status = get_pty_channel (inDevName, outDevName, &inchannel, &outchannel); | |
507 | if (!(status & 1)) | |
508 | error ("Error getting PTY channel: %x", status); | |
c426bed2 | 509 | if (INTEGERP (buffer)) |
dcfdbac7 JB |
510 | { |
511 | dout.l = strlen ("NLA0:"); | |
512 | dout.a = "NLA0:"; | |
513 | } | |
514 | else | |
515 | { | |
516 | dout.l = strlen (outDevName); | |
517 | dout.a = outDevName; | |
518 | } | |
519 | ||
520 | vs = get_vms_process_stuff (); | |
521 | if (!vs) | |
522 | { | |
523 | sys$dassgn (inchannel); | |
524 | sys$dassgn (outchannel); | |
525 | error ("Too many VMS processes"); | |
526 | } | |
527 | vs->inputChan = inchannel; | |
528 | vs->outputChan = outchannel; | |
529 | } | |
530 | ||
531 | filefd = open (XSTRING (args[1])->data, O_RDONLY, 0); | |
532 | if (filefd < 0) | |
533 | { | |
534 | sys$dassgn (inchannel); | |
535 | sys$dassgn (outchannel); | |
536 | give_back_vms_process_stuff (vs); | |
537 | report_file_error ("Opening process input file", Fcons (args[1], Qnil)); | |
538 | } | |
539 | else | |
540 | close (filefd); | |
541 | ||
542 | din.l = XSTRING (args[1])->size; | |
543 | din.a = XSTRING (args[1])->data; | |
544 | ||
545 | /* | |
546 | Start a read on the process channel | |
547 | */ | |
c426bed2 | 548 | if (!INTEGERP (buffer)) |
dcfdbac7 JB |
549 | { |
550 | start_vms_process_read (vs); | |
551 | SpawnFlags = CLI$M_NOWAIT; | |
552 | } | |
553 | else | |
554 | SpawnFlags = 0; | |
555 | ||
556 | /* | |
557 | On VMS we need to change the current directory | |
558 | of the parent process before forking so that | |
559 | the child inherit that directory. We remember | |
560 | where we were before changing. | |
561 | */ | |
562 | VMSgetwd (oldDir); | |
563 | child_setup (0, 0, 0, 0, 0); | |
564 | status = lib$spawn (&dcmd, &din, &dout, &SpawnFlags, 0, &vs->pid, | |
565 | &vs->exitStatus, 0, call_process_ast, vs); | |
566 | chdir (oldDir); | |
567 | ||
568 | if (status != SS$_NORMAL) | |
569 | { | |
570 | sys$dassgn (inchannel); | |
571 | sys$dassgn (outchannel); | |
572 | give_back_vms_process_stuff (vs); | |
573 | error ("Error calling LIB$SPAWN: %x", status); | |
574 | } | |
575 | pid = vs->pid; | |
576 | ||
c426bed2 | 577 | if (INTEGERP (buffer)) |
dcfdbac7 JB |
578 | { |
579 | #ifndef subprocesses | |
580 | wait_without_blocking (); | |
581 | #endif subprocesses | |
582 | return Qnil; | |
583 | } | |
584 | ||
696810ff RS |
585 | if (!NILP (display) && INTERACTIVE) |
586 | prepare_menu_bars (); | |
587 | ||
dcfdbac7 JB |
588 | record_unwind_protect (call_process_cleanup, |
589 | Fcons (make_number (fd[0]), make_number (pid))); | |
590 | ||
591 | ||
c426bed2 | 592 | if (BUFFERP (buffer)) |
dcfdbac7 JB |
593 | Fset_buffer (buffer); |
594 | ||
595 | immediate_quit = 1; | |
596 | QUIT; | |
597 | ||
598 | while (1) | |
599 | { | |
600 | sys$waitfr (vs->eventFlag); | |
601 | if (vs->iosb[0] & 1) | |
602 | { | |
603 | immediate_quit = 0; | |
d427b66a | 604 | if (!NILP (buffer)) |
dcfdbac7 JB |
605 | { |
606 | vs->iosb[1] = clean_vms_buffer (vs->inputBuffer, vs->iosb[1]); | |
607 | InsCStr (vs->inputBuffer, vs->iosb[1]); | |
608 | } | |
d427b66a | 609 | if (!NILP (display) && INTERACTIVE) |
dcfdbac7 JB |
610 | redisplay_preserve_echo_area (); |
611 | immediate_quit = 1; | |
612 | QUIT; | |
613 | if (!start_vms_process_read (vs)) | |
614 | break; /* The other side went away */ | |
615 | } | |
616 | else | |
617 | break; | |
618 | } | |
696810ff RS |
619 | |
620 | sys$dassgn (inchannel); | |
621 | sys$dassgn (outchannel); | |
622 | give_back_vms_process_stuff (vs); | |
dcfdbac7 JB |
623 | |
624 | /* Wait for it to terminate, unless it already has. */ | |
625 | wait_for_termination (pid); | |
626 | ||
627 | immediate_quit = 0; | |
628 | ||
629 | set_current_buffer (old); | |
630 | ||
1f924f99 | 631 | return unbind_to (count, Qnil); |
dcfdbac7 JB |
632 | } |
633 | ||
634 | create_process (process, new_argv) | |
635 | Lisp_Object process; | |
636 | char *new_argv; | |
637 | { | |
638 | int pid, inchannel, outchannel, forkin, forkout; | |
639 | char old_dir[512]; | |
640 | char in_dev_name[65]; | |
641 | char out_dev_name[65]; | |
642 | short iosb[4]; | |
643 | int status; | |
644 | int spawn_flags = CLI$M_NOWAIT; | |
645 | int child_sig (); | |
646 | struct { | |
647 | int l; | |
648 | char *a; | |
649 | } din, dout, dprompt, dcmd; | |
650 | VMS_PROC_STUFF *vs; | |
651 | VMS_PROC_STUFF *get_vms_process_stuff (); | |
652 | ||
653 | status = get_pty_channel (in_dev_name, out_dev_name, &inchannel, &outchannel); | |
654 | if (!(status & 1)) | |
655 | { | |
656 | remove_process (process); | |
657 | error ("Error getting PTY channel: %x", status); | |
658 | } | |
659 | dout.l = strlen (out_dev_name); | |
660 | dout.a = out_dev_name; | |
661 | dprompt.l = strlen (DCL_PROMPT); | |
662 | dprompt.a = DCL_PROMPT; | |
663 | ||
664 | if (strcmp (new_argv, "*dcl*") == 0) | |
665 | { | |
666 | din.l = strlen (in_dev_name); | |
667 | din.a = in_dev_name; | |
668 | dcmd.l = 0; | |
669 | dcmd.a = (char *)0; | |
670 | } | |
671 | else | |
672 | { | |
673 | din.l = strlen ("NLA0:"); | |
674 | din.a = "NLA0:"; | |
675 | dcmd.l = strlen (new_argv); | |
676 | dcmd.a = new_argv; | |
677 | } | |
678 | ||
679 | /* Delay interrupts until we have a chance to store | |
680 | the new fork's pid in its process structure */ | |
681 | sys$setast (0); | |
682 | ||
683 | vs = get_vms_process_stuff (); | |
684 | if (vs == 0) | |
685 | { | |
686 | sys$setast (1); | |
687 | remove_process (process); | |
688 | error ("Too many VMS processes"); | |
689 | } | |
690 | vs->inputChan = inchannel; | |
691 | vs->outputChan = outchannel; | |
692 | ||
693 | /* Start a read on the process channel */ | |
694 | start_vms_process_read (vs); | |
695 | ||
696 | /* Switch current directory so that the child inherits it. */ | |
697 | VMSgetwd (old_dir); | |
698 | child_setup (0, 0, 0, 0, 0); | |
699 | ||
700 | status = lib$spawn (&dcmd, &din, &dout, &spawn_flags, 0, &vs->pid, | |
701 | &vs->exitStatus, 0, child_sig, vs, &dprompt); | |
702 | chdir (old_dir); | |
703 | ||
704 | if (status != SS$_NORMAL) | |
705 | { | |
706 | sys$setast (1); | |
707 | remove_process (process); | |
708 | error ("Error calling LIB$SPAWN: %x", status); | |
709 | } | |
710 | vs->pid &= 0xffff; /* It needs to fit in a FASTINT, | |
711 | we don't need the rest of the bits */ | |
712 | pid = vs->pid; | |
713 | ||
714 | /* | |
715 | ON VMS process->infd holds the (event flag-1) | |
716 | that we use for doing I/O on that process. | |
717 | `input_wait_mask' is the cluster of event flags | |
718 | we can wait on. | |
719 | ||
720 | Event flags returned start at 1 for the keyboard. | |
721 | Since Unix expects descriptor 0 for the keyboard, | |
722 | we substract one from the event flag. | |
723 | */ | |
724 | inchannel = vs->eventFlag-1; | |
725 | ||
726 | /* Record this as an active process, with its channels. | |
727 | As a result, child_setup will close Emacs's side of the pipes. */ | |
728 | chan_process[inchannel] = process; | |
64db3848 KH |
729 | XSETFASTINT (XPROCESS (process)->infd, inchannel); |
730 | XSETFASTINT (XPROCESS (process)->outfd, outchannel); | |
0bc439a0 | 731 | XPROCESS (process)->status = Qrun |
dcfdbac7 JB |
732 | |
733 | /* Delay interrupts until we have a chance to store | |
734 | the new fork's pid in its process structure */ | |
735 | ||
736 | #define NO_ECHO "set term/noecho\r" | |
737 | sys$setast (0); | |
738 | /* | |
739 | Send a command to the process to not echo input | |
740 | ||
741 | The CMU PTY driver does not support SETMODEs. | |
742 | */ | |
743 | write_to_vms_process (vs, NO_ECHO, strlen (NO_ECHO)); | |
744 | ||
64db3848 | 745 | XSETFASTINT (XPROCESS (process)->pid, pid); |
dcfdbac7 JB |
746 | sys$setast (1); |
747 | } | |
748 | ||
749 | child_sig (vs) | |
750 | VMS_PROC_STUFF *vs; | |
751 | { | |
752 | register int pid; | |
753 | Lisp_Object tail, proc; | |
754 | register struct Lisp_Process *p; | |
755 | int old_errno = errno; | |
756 | ||
757 | pid = vs->pid; | |
758 | sys$setef (vs->eventFlag); | |
759 | ||
760 | for (tail = Vprocess_alist; XSYMBOL (tail) != XSYMBOL (Qnil); tail = XCONS (tail)->cdr) | |
761 | { | |
762 | proc = XCONS (XCONS (tail)->car)->cdr; | |
763 | p = XPROCESS (proc); | |
764 | if (EQ (p->childp, Qt) && XFASTINT (p->pid) == pid) | |
765 | break; | |
766 | } | |
767 | ||
768 | if (XSYMBOL (tail) == XSYMBOL (Qnil)) | |
769 | return; | |
770 | ||
0bc439a0 | 771 | p->status = Fcons (Qexit, Fcons (make_number (vs->exitStatus), Qnil)) |
dcfdbac7 JB |
772 | } |
773 | ||
774 | syms_of_vmsproc () | |
775 | { | |
776 | defsubr (&Scall_process); | |
777 | } | |
778 | ||
779 | init_vmsproc () | |
780 | { | |
781 | char *malloc (); | |
782 | int i; | |
783 | VMS_PROC_STUFF *vs; | |
784 | ||
785 | for (vs=procList, i=0; i<MAX_EVENT_FLAGS+1; i++, vs++) | |
786 | { | |
787 | vs->busy = 0; | |
788 | vs->eventFlag = i; | |
789 | sys$clref (i); | |
790 | vs->inputChan = 0; | |
791 | vs->pid = 0; | |
792 | } | |
793 | procList[0].busy = 1; /* Zero is reserved */ | |
794 | } |