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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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
dcfdbac7 JB |
20 | |
21 | ||
22 | /* | |
23 | Event flag and `select' emulation | |
24 | ||
25 | 0 is never used | |
26 | 1 is the terminal | |
27 | 23 is the timer event flag | |
28 | 24-31 are reserved by VMS | |
29 | */ | |
0bc439a0 | 30 | #include <config.h> |
dcfdbac7 JB |
31 | #include <ssdef.h> |
32 | #include <iodef.h> | |
33 | #include <dvidef.h> | |
34 | #include <clidef.h> | |
35 | #include "vmsproc.h" | |
0bc439a0 RS |
36 | #include "lisp.h" |
37 | #include "buffer.h" | |
38 | #include <file.h> | |
39 | #include "process.h" | |
40 | #include "commands.h" | |
41 | #include <errno.h> | |
42 | extern Lisp_Object call_process_cleanup (); | |
43 | ||
dcfdbac7 JB |
44 | |
45 | #define KEYBOARD_EVENT_FLAG 1 | |
46 | #define TIMER_EVENT_FLAG 23 | |
47 | ||
48 | static VMS_PROC_STUFF procList[MAX_EVENT_FLAGS+1]; | |
49 | ||
50 | get_kbd_event_flag () | |
51 | { | |
52 | /* | |
53 | Return the first event flag for keyboard input. | |
54 | */ | |
55 | VMS_PROC_STUFF *vs = &procList[KEYBOARD_EVENT_FLAG]; | |
56 | ||
57 | vs->busy = 1; | |
58 | vs->pid = 0; | |
59 | return (vs->eventFlag); | |
60 | } | |
61 | ||
62 | get_timer_event_flag () | |
63 | { | |
64 | /* | |
65 | Return the last event flag for use by timeouts | |
66 | */ | |
67 | VMS_PROC_STUFF *vs = &procList[TIMER_EVENT_FLAG]; | |
68 | ||
69 | vs->busy = 1; | |
70 | vs->pid = 0; | |
71 | return (vs->eventFlag); | |
72 | } | |
73 | ||
74 | VMS_PROC_STUFF * | |
75 | get_vms_process_stuff () | |
76 | { | |
77 | /* | |
78 | Return a process_stuff structure | |
79 | ||
80 | We use 1-23 as our event flags to simplify implementing | |
81 | a VMS `select' call. | |
82 | */ | |
83 | int i; | |
84 | VMS_PROC_STUFF *vs; | |
85 | ||
86 | for (i=1, vs = procList; i<MAX_EVENT_FLAGS; i++, vs++) | |
87 | { | |
88 | if (!vs->busy) | |
89 | { | |
90 | vs->busy = 1; | |
91 | vs->inputChan = 0; | |
92 | vs->pid = 0; | |
93 | sys$clref (vs->eventFlag); | |
94 | return (vs); | |
95 | } | |
96 | } | |
97 | return ((VMS_PROC_STUFF *)0); | |
98 | } | |
99 | ||
100 | give_back_vms_process_stuff (vs) | |
101 | VMS_PROC_STUFF *vs; | |
102 | { | |
103 | /* | |
104 | Return an event flag to our pool | |
105 | */ | |
106 | vs->busy = 0; | |
107 | vs->inputChan = 0; | |
108 | vs->pid = 0; | |
109 | } | |
110 | ||
111 | VMS_PROC_STUFF * | |
112 | get_vms_process_pointer (pid) | |
113 | int pid; | |
114 | { | |
115 | /* | |
116 | Given a pid, return the VMS_STUFF pointer | |
117 | */ | |
118 | int i; | |
119 | VMS_PROC_STUFF *vs; | |
120 | ||
121 | /* Don't search the last one */ | |
122 | for (i=0, vs=procList; i<MAX_EVENT_FLAGS; i++, vs++) | |
123 | { | |
124 | if (vs->busy && vs->pid == pid) | |
125 | return (vs); | |
126 | } | |
127 | return ((VMS_PROC_STUFF *)0); | |
128 | } | |
129 | ||
130 | start_vms_process_read (vs) | |
131 | VMS_PROC_STUFF *vs; | |
132 | { | |
133 | /* | |
134 | Start an asynchronous read on a VMS process | |
135 | We will catch up with the output sooner or later | |
136 | */ | |
137 | int status; | |
138 | int ProcAst (); | |
139 | ||
140 | status = sys$qio (vs->eventFlag, vs->outputChan, IO$_READVBLK, | |
141 | vs->iosb, 0, vs, | |
142 | vs->inputBuffer, sizeof (vs->inputBuffer), 0, 0, 0, 0); | |
143 | if (status != SS$_NORMAL) | |
144 | return (0); | |
145 | else | |
146 | return (1); | |
147 | } | |
148 | ||
149 | extern int waiting_for_ast; /* in sysdep.c */ | |
150 | extern int timer_ef; | |
151 | extern int input_ef; | |
152 | ||
153 | select (nDesc, rdsc, wdsc, edsc, timeOut) | |
154 | int nDesc; | |
155 | int *rdsc; | |
156 | int *wdsc; | |
157 | int *edsc; | |
158 | int *timeOut; | |
159 | { | |
160 | /* Emulate a select call | |
161 | ||
162 | We know that we only use event flags 1-23 | |
163 | ||
164 | timeout == 100000 & bit 0 set means wait on keyboard input until | |
165 | something shows up. If timeout == 0, we just read the event | |
166 | flags and return what we find. */ | |
167 | ||
168 | int nfds = 0; | |
169 | int status; | |
170 | int time[2]; | |
171 | int delta = -10000000; | |
172 | int zero = 0; | |
173 | int timeout = *timeOut; | |
174 | unsigned long mask, readMask, waitMask; | |
175 | ||
176 | if (rdsc) | |
177 | readMask = *rdsc << 1; /* Unix mask is shifted over 1 */ | |
178 | else | |
179 | readMask = 0; /* Must be a wait call */ | |
180 | ||
181 | sys$clref (KEYBOARD_EVENT_FLAG); | |
182 | sys$setast (0); /* Block interrupts */ | |
183 | sys$readef (KEYBOARD_EVENT_FLAG, &mask); /* See what is set */ | |
184 | mask &= readMask; /* Just examine what we need */ | |
185 | if (mask == 0) | |
186 | { /* Nothing set, we must wait */ | |
187 | if (timeout != 0) | |
188 | { /* Not just inspecting... */ | |
189 | if (!(timeout == 100000 && | |
190 | readMask == (1 << KEYBOARD_EVENT_FLAG))) | |
191 | { | |
192 | lib$emul (&timeout, &delta, &zero, time); | |
193 | sys$setimr (TIMER_EVENT_FLAG, time, 0, 1); | |
194 | waitMask = readMask | (1 << TIMER_EVENT_FLAG); | |
195 | } | |
196 | else | |
197 | waitMask = readMask; | |
198 | if (waitMask & (1 << KEYBOARD_EVENT_FLAG)) | |
199 | { | |
200 | sys$clref (KEYBOARD_EVENT_FLAG); | |
201 | waiting_for_ast = 1; /* Only if reading from 0 */ | |
202 | } | |
203 | sys$setast (1); | |
204 | sys$wflor (KEYBOARD_EVENT_FLAG, waitMask); | |
205 | sys$cantim (1, 0); | |
206 | sys$readef (KEYBOARD_EVENT_FLAG, &mask); | |
207 | if (readMask & (1 << KEYBOARD_EVENT_FLAG)) | |
208 | waiting_for_ast = 0; | |
209 | } | |
210 | } | |
211 | sys$setast (1); | |
212 | ||
213 | /* | |
214 | Count number of descriptors that are ready | |
215 | */ | |
216 | mask &= readMask; | |
217 | if (rdsc) | |
218 | *rdsc = (mask >> 1); /* Back to Unix format */ | |
219 | for (nfds = 0; mask; mask >>= 1) | |
220 | { | |
221 | if (mask & 1) | |
222 | nfds++; | |
223 | } | |
224 | return (nfds); | |
225 | } | |
226 | ||
227 | #define MAX_BUFF 1024 | |
228 | ||
229 | write_to_vms_process (vs, buf, len) | |
230 | VMS_PROC_STUFF *vs; | |
231 | char *buf; | |
232 | int len; | |
233 | { | |
234 | /* | |
235 | Write something to a VMS process. | |
236 | ||
237 | We have to map newlines to carriage returns for VMS. | |
238 | */ | |
239 | char ourBuff[MAX_BUFF]; | |
240 | short iosb[4]; | |
241 | int status; | |
242 | int in, out; | |
243 | ||
244 | while (len > 0) | |
245 | { | |
246 | out = map_nl_to_cr (buf, ourBuff, len, MAX_BUFF); | |
247 | status = sys$qiow (0, vs->inputChan, IO$_WRITEVBLK|IO$M_NOFORMAT, | |
248 | iosb, 0, 0, ourBuff, out, 0, 0, 0, 0); | |
249 | if (status != SS$_NORMAL || (status = iosb[0]) != SS$_NORMAL) | |
250 | { | |
251 | error ("Could not write to subprocess: %x", status); | |
252 | return (0); | |
253 | } | |
0bc439a0 | 254 | len -= out; |
dcfdbac7 JB |
255 | } |
256 | return (1); | |
257 | } | |
258 | ||
259 | static | |
260 | map_nl_to_cr (in, out, maxIn, maxOut) | |
261 | char *in; | |
262 | char *out; | |
263 | int maxIn; | |
264 | int maxOut; | |
265 | { | |
266 | /* | |
267 | Copy `in' to `out' remapping `\n' to `\r' | |
268 | */ | |
269 | int c; | |
270 | int o; | |
271 | ||
272 | for (o=0; maxIn-- > 0 && o < maxOut; o++) | |
273 | { | |
274 | c = *in++; | |
275 | *out++ = (c == '\n') ? '\r' : c; | |
276 | } | |
277 | return (o); | |
278 | } | |
279 | ||
280 | clean_vms_buffer (buf, len) | |
281 | char *buf; | |
282 | int len; | |
283 | { | |
284 | /* | |
285 | Sanitize output from a VMS subprocess | |
286 | Strip CR's and NULLs | |
287 | */ | |
288 | char *oBuf = buf; | |
289 | char c; | |
290 | int l = 0; | |
291 | ||
292 | while (len-- > 0) | |
293 | { | |
294 | c = *buf++; | |
295 | if (c == '\r' || c == '\0') | |
296 | ; | |
297 | else | |
298 | { | |
299 | *oBuf++ = c; | |
300 | l++; | |
301 | } | |
302 | } | |
303 | return (l); | |
304 | } | |
305 | ||
306 | /* | |
307 | For the CMU PTY driver | |
308 | */ | |
309 | #define PTYNAME "PYA0:" | |
310 | ||
311 | get_pty_channel (inDevName, outDevName, inChannel, outChannel) | |
312 | char *inDevName; | |
313 | char *outDevName; | |
314 | int *inChannel; | |
315 | int *outChannel; | |
316 | { | |
317 | int PartnerUnitNumber; | |
318 | int status; | |
319 | struct { | |
320 | int l; | |
321 | char *a; | |
322 | } d; | |
323 | struct { | |
324 | short BufLen; | |
325 | short ItemCode; | |
326 | int *BufAddress; | |
327 | int *ItemLength; | |
328 | } g[2]; | |
329 | ||
330 | d.l = strlen (PTYNAME); | |
331 | d.a = PTYNAME; | |
332 | *inChannel = 0; /* Should be `short' on VMS */ | |
333 | *outChannel = 0; | |
334 | *inDevName = *outDevName = '\0'; | |
335 | status = sys$assign (&d, inChannel, 0, 0); | |
336 | if (status == SS$_NORMAL) | |
337 | { | |
338 | *outChannel = *inChannel; | |
339 | g[0].BufLen = sizeof (PartnerUnitNumber); | |
340 | g[0].ItemCode = DVI$_UNIT; | |
341 | g[0].BufAddress = &PartnerUnitNumber; | |
342 | g[0].ItemLength = (int *)0; | |
343 | g[1].BufLen = g[1].ItemCode = 0; | |
344 | status = sys$getdviw (0, *inChannel, 0, &g, 0, 0, 0, 0); | |
345 | if (status == SS$_NORMAL) | |
346 | { | |
347 | sprintf (inDevName, "_TPA%d:", PartnerUnitNumber); | |
348 | strcpy (outDevName, inDevName); | |
349 | } | |
350 | } | |
351 | return (status); | |
352 | } | |
353 | ||
354 | VMSgetwd (buf) | |
355 | char *buf; | |
356 | { | |
357 | /* | |
358 | Return the current directory | |
359 | */ | |
360 | char curdir[256]; | |
361 | char *getenv (); | |
362 | char *s; | |
363 | short len; | |
364 | int status; | |
365 | struct | |
366 | { | |
367 | int l; | |
368 | char *a; | |
369 | } d; | |
370 | ||
371 | s = getenv ("SYS$DISK"); | |
372 | if (s) | |
373 | strcpy (buf, s); | |
374 | else | |
375 | *buf = '\0'; | |
376 | ||
377 | d.l = 255; | |
378 | d.a = curdir; | |
379 | status = sys$setddir (0, &len, &d); | |
380 | if (status & 1) | |
381 | { | |
382 | curdir[len] = '\0'; | |
383 | strcat (buf, curdir); | |
384 | } | |
385 | } | |
386 | \f | |
387 | static | |
388 | call_process_ast (vs) | |
389 | VMS_PROC_STUFF *vs; | |
390 | { | |
391 | sys$setef (vs->eventFlag); | |
392 | } | |
393 | ||
394 | void | |
395 | child_setup (in, out, err, new_argv, env) | |
396 | int in, out, err; | |
397 | register char **new_argv; | |
398 | char **env; | |
399 | { | |
400 | /* ??? I suspect that maybe this shouldn't be done on VMS. */ | |
401 | #ifdef subprocesses | |
402 | /* Close Emacs's descriptors that this process should not have. */ | |
403 | close_process_descs (); | |
404 | #endif | |
405 | ||
c426bed2 | 406 | if (STRINGP (current_buffer->directory)) |
dcfdbac7 JB |
407 | chdir (XSTRING (current_buffer->directory)->data); |
408 | } | |
409 | ||
410 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
411 | "Call PROGRAM synchronously in a separate process.\n\ | |
412 | Program's input comes from file INFILE (nil means null device, `NLA0:').\n\ | |
413 | Insert output in BUFFER before point; t means current buffer;\n\ | |
414 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
415 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ | |
416 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
417 | This function waits for PROGRAM to terminate, unless BUFFER is 0;\n\ | |
418 | if you quit, the process is killed.") | |
419 | (nargs, args) | |
420 | int nargs; | |
421 | register Lisp_Object *args; | |
422 | { | |
423 | Lisp_Object display, buffer, path; | |
424 | char oldDir[512]; | |
425 | int inchannel, outchannel; | |
426 | int len; | |
427 | int call_process_ast (); | |
428 | struct | |
429 | { | |
430 | int l; | |
431 | char *a; | |
432 | } dcmd, din, dout; | |
433 | char inDevName[65]; | |
434 | char outDevName[65]; | |
435 | short iosb[4]; | |
436 | int status; | |
437 | int SpawnFlags = CLI$M_NOWAIT; | |
438 | VMS_PROC_STUFF *vs; | |
439 | VMS_PROC_STUFF *get_vms_process_stuff (); | |
440 | int fd[2]; | |
441 | int filefd; | |
442 | register int pid; | |
443 | char buf[1024]; | |
444 | int count = specpdl_ptr - specpdl; | |
445 | register unsigned char **new_argv; | |
446 | struct buffer *old = current_buffer; | |
447 | ||
448 | CHECK_STRING (args[0], 0); | |
449 | ||
d427b66a | 450 | if (nargs <= 1 || NILP (args[1])) |
dcfdbac7 JB |
451 | args[1] = build_string ("NLA0:"); |
452 | else | |
453 | args[1] = Fexpand_file_name (args[1], current_buffer->directory); | |
454 | ||
455 | CHECK_STRING (args[1], 1); | |
456 | ||
457 | { | |
458 | register Lisp_Object tem; | |
459 | buffer = tem = args[2]; | |
460 | if (nargs <= 2) | |
461 | buffer = Qnil; | |
462 | else if (!(EQ (tem, Qnil) || EQ (tem, Qt) | |
463 | || XFASTINT (tem) == 0)) | |
464 | { | |
465 | buffer = Fget_buffer (tem); | |
466 | CHECK_BUFFER (buffer, 2); | |
467 | } | |
468 | } | |
469 | ||
470 | display = nargs >= 3 ? args[3] : Qnil; | |
471 | ||
472 | { | |
473 | /* | |
474 | if (args[0] == "*dcl*" then we need to skip pas the "-c", | |
475 | else args[0] is the program to run. | |
476 | */ | |
477 | register int i; | |
478 | int arg0; | |
479 | int firstArg; | |
480 | ||
481 | if (strcmp (XSTRING (args[0])->data, "*dcl*") == 0) | |
482 | { | |
483 | arg0 = 5; | |
484 | firstArg = 6; | |
485 | } | |
486 | else | |
487 | { | |
488 | arg0 = 0; | |
489 | firstArg = 4; | |
490 | } | |
491 | len = XSTRING (args[arg0])->size + 1; | |
492 | for (i = firstArg; i < nargs; i++) | |
493 | { | |
494 | CHECK_STRING (args[i], i); | |
495 | len += XSTRING (args[i])->size + 1; | |
496 | } | |
497 | new_argv = alloca (len); | |
498 | strcpy (new_argv, XSTRING (args[arg0])->data); | |
499 | for (i = firstArg; i < nargs; i++) | |
500 | { | |
501 | strcat (new_argv, " "); | |
502 | strcat (new_argv, XSTRING (args[i])->data); | |
503 | } | |
504 | dcmd.l = len-1; | |
505 | dcmd.a = new_argv; | |
506 | ||
507 | status = get_pty_channel (inDevName, outDevName, &inchannel, &outchannel); | |
508 | if (!(status & 1)) | |
509 | error ("Error getting PTY channel: %x", status); | |
c426bed2 | 510 | if (INTEGERP (buffer)) |
dcfdbac7 JB |
511 | { |
512 | dout.l = strlen ("NLA0:"); | |
513 | dout.a = "NLA0:"; | |
514 | } | |
515 | else | |
516 | { | |
517 | dout.l = strlen (outDevName); | |
518 | dout.a = outDevName; | |
519 | } | |
520 | ||
521 | vs = get_vms_process_stuff (); | |
522 | if (!vs) | |
523 | { | |
524 | sys$dassgn (inchannel); | |
525 | sys$dassgn (outchannel); | |
526 | error ("Too many VMS processes"); | |
527 | } | |
528 | vs->inputChan = inchannel; | |
529 | vs->outputChan = outchannel; | |
530 | } | |
531 | ||
532 | filefd = open (XSTRING (args[1])->data, O_RDONLY, 0); | |
533 | if (filefd < 0) | |
534 | { | |
535 | sys$dassgn (inchannel); | |
536 | sys$dassgn (outchannel); | |
537 | give_back_vms_process_stuff (vs); | |
538 | report_file_error ("Opening process input file", Fcons (args[1], Qnil)); | |
539 | } | |
540 | else | |
541 | close (filefd); | |
542 | ||
543 | din.l = XSTRING (args[1])->size; | |
544 | din.a = XSTRING (args[1])->data; | |
545 | ||
546 | /* | |
547 | Start a read on the process channel | |
548 | */ | |
c426bed2 | 549 | if (!INTEGERP (buffer)) |
dcfdbac7 JB |
550 | { |
551 | start_vms_process_read (vs); | |
552 | SpawnFlags = CLI$M_NOWAIT; | |
553 | } | |
554 | else | |
555 | SpawnFlags = 0; | |
556 | ||
557 | /* | |
558 | On VMS we need to change the current directory | |
559 | of the parent process before forking so that | |
560 | the child inherit that directory. We remember | |
561 | where we were before changing. | |
562 | */ | |
563 | VMSgetwd (oldDir); | |
564 | child_setup (0, 0, 0, 0, 0); | |
565 | status = lib$spawn (&dcmd, &din, &dout, &SpawnFlags, 0, &vs->pid, | |
566 | &vs->exitStatus, 0, call_process_ast, vs); | |
567 | chdir (oldDir); | |
568 | ||
569 | if (status != SS$_NORMAL) | |
570 | { | |
571 | sys$dassgn (inchannel); | |
572 | sys$dassgn (outchannel); | |
573 | give_back_vms_process_stuff (vs); | |
574 | error ("Error calling LIB$SPAWN: %x", status); | |
575 | } | |
576 | pid = vs->pid; | |
577 | ||
c426bed2 | 578 | if (INTEGERP (buffer)) |
dcfdbac7 JB |
579 | { |
580 | #ifndef subprocesses | |
581 | wait_without_blocking (); | |
582 | #endif subprocesses | |
583 | return Qnil; | |
584 | } | |
585 | ||
696810ff RS |
586 | if (!NILP (display) && INTERACTIVE) |
587 | prepare_menu_bars (); | |
588 | ||
dcfdbac7 JB |
589 | record_unwind_protect (call_process_cleanup, |
590 | Fcons (make_number (fd[0]), make_number (pid))); | |
591 | ||
592 | ||
c426bed2 | 593 | if (BUFFERP (buffer)) |
dcfdbac7 JB |
594 | Fset_buffer (buffer); |
595 | ||
596 | immediate_quit = 1; | |
597 | QUIT; | |
598 | ||
599 | while (1) | |
600 | { | |
601 | sys$waitfr (vs->eventFlag); | |
602 | if (vs->iosb[0] & 1) | |
603 | { | |
604 | immediate_quit = 0; | |
d427b66a | 605 | if (!NILP (buffer)) |
dcfdbac7 JB |
606 | { |
607 | vs->iosb[1] = clean_vms_buffer (vs->inputBuffer, vs->iosb[1]); | |
608 | InsCStr (vs->inputBuffer, vs->iosb[1]); | |
609 | } | |
d427b66a | 610 | if (!NILP (display) && INTERACTIVE) |
dcfdbac7 JB |
611 | redisplay_preserve_echo_area (); |
612 | immediate_quit = 1; | |
613 | QUIT; | |
614 | if (!start_vms_process_read (vs)) | |
615 | break; /* The other side went away */ | |
616 | } | |
617 | else | |
618 | break; | |
619 | } | |
696810ff RS |
620 | |
621 | sys$dassgn (inchannel); | |
622 | sys$dassgn (outchannel); | |
623 | give_back_vms_process_stuff (vs); | |
dcfdbac7 JB |
624 | |
625 | /* Wait for it to terminate, unless it already has. */ | |
626 | wait_for_termination (pid); | |
627 | ||
628 | immediate_quit = 0; | |
629 | ||
630 | set_current_buffer (old); | |
631 | ||
1f924f99 | 632 | return unbind_to (count, Qnil); |
dcfdbac7 JB |
633 | } |
634 | ||
635 | create_process (process, new_argv) | |
636 | Lisp_Object process; | |
637 | char *new_argv; | |
638 | { | |
639 | int pid, inchannel, outchannel, forkin, forkout; | |
640 | char old_dir[512]; | |
641 | char in_dev_name[65]; | |
642 | char out_dev_name[65]; | |
643 | short iosb[4]; | |
644 | int status; | |
645 | int spawn_flags = CLI$M_NOWAIT; | |
646 | int child_sig (); | |
647 | struct { | |
648 | int l; | |
649 | char *a; | |
650 | } din, dout, dprompt, dcmd; | |
651 | VMS_PROC_STUFF *vs; | |
652 | VMS_PROC_STUFF *get_vms_process_stuff (); | |
653 | ||
654 | status = get_pty_channel (in_dev_name, out_dev_name, &inchannel, &outchannel); | |
655 | if (!(status & 1)) | |
656 | { | |
657 | remove_process (process); | |
658 | error ("Error getting PTY channel: %x", status); | |
659 | } | |
660 | dout.l = strlen (out_dev_name); | |
661 | dout.a = out_dev_name; | |
662 | dprompt.l = strlen (DCL_PROMPT); | |
663 | dprompt.a = DCL_PROMPT; | |
664 | ||
665 | if (strcmp (new_argv, "*dcl*") == 0) | |
666 | { | |
667 | din.l = strlen (in_dev_name); | |
668 | din.a = in_dev_name; | |
669 | dcmd.l = 0; | |
670 | dcmd.a = (char *)0; | |
671 | } | |
672 | else | |
673 | { | |
674 | din.l = strlen ("NLA0:"); | |
675 | din.a = "NLA0:"; | |
676 | dcmd.l = strlen (new_argv); | |
677 | dcmd.a = new_argv; | |
678 | } | |
679 | ||
680 | /* Delay interrupts until we have a chance to store | |
681 | the new fork's pid in its process structure */ | |
682 | sys$setast (0); | |
683 | ||
684 | vs = get_vms_process_stuff (); | |
685 | if (vs == 0) | |
686 | { | |
687 | sys$setast (1); | |
688 | remove_process (process); | |
689 | error ("Too many VMS processes"); | |
690 | } | |
691 | vs->inputChan = inchannel; | |
692 | vs->outputChan = outchannel; | |
693 | ||
694 | /* Start a read on the process channel */ | |
695 | start_vms_process_read (vs); | |
696 | ||
697 | /* Switch current directory so that the child inherits it. */ | |
698 | VMSgetwd (old_dir); | |
699 | child_setup (0, 0, 0, 0, 0); | |
700 | ||
701 | status = lib$spawn (&dcmd, &din, &dout, &spawn_flags, 0, &vs->pid, | |
702 | &vs->exitStatus, 0, child_sig, vs, &dprompt); | |
703 | chdir (old_dir); | |
704 | ||
705 | if (status != SS$_NORMAL) | |
706 | { | |
707 | sys$setast (1); | |
708 | remove_process (process); | |
709 | error ("Error calling LIB$SPAWN: %x", status); | |
710 | } | |
711 | vs->pid &= 0xffff; /* It needs to fit in a FASTINT, | |
712 | we don't need the rest of the bits */ | |
713 | pid = vs->pid; | |
714 | ||
715 | /* | |
716 | ON VMS process->infd holds the (event flag-1) | |
717 | that we use for doing I/O on that process. | |
718 | `input_wait_mask' is the cluster of event flags | |
719 | we can wait on. | |
720 | ||
721 | Event flags returned start at 1 for the keyboard. | |
722 | Since Unix expects descriptor 0 for the keyboard, | |
8e6208c5 | 723 | we subtract one from the event flag. |
dcfdbac7 JB |
724 | */ |
725 | inchannel = vs->eventFlag-1; | |
726 | ||
727 | /* Record this as an active process, with its channels. | |
728 | As a result, child_setup will close Emacs's side of the pipes. */ | |
729 | chan_process[inchannel] = process; | |
64db3848 KH |
730 | XSETFASTINT (XPROCESS (process)->infd, inchannel); |
731 | XSETFASTINT (XPROCESS (process)->outfd, outchannel); | |
0bc439a0 | 732 | XPROCESS (process)->status = Qrun |
dcfdbac7 JB |
733 | |
734 | /* Delay interrupts until we have a chance to store | |
735 | the new fork's pid in its process structure */ | |
736 | ||
737 | #define NO_ECHO "set term/noecho\r" | |
738 | sys$setast (0); | |
739 | /* | |
740 | Send a command to the process to not echo input | |
741 | ||
742 | The CMU PTY driver does not support SETMODEs. | |
743 | */ | |
744 | write_to_vms_process (vs, NO_ECHO, strlen (NO_ECHO)); | |
745 | ||
64db3848 | 746 | XSETFASTINT (XPROCESS (process)->pid, pid); |
dcfdbac7 JB |
747 | sys$setast (1); |
748 | } | |
749 | ||
750 | child_sig (vs) | |
751 | VMS_PROC_STUFF *vs; | |
752 | { | |
753 | register int pid; | |
754 | Lisp_Object tail, proc; | |
755 | register struct Lisp_Process *p; | |
756 | int old_errno = errno; | |
757 | ||
758 | pid = vs->pid; | |
759 | sys$setef (vs->eventFlag); | |
760 | ||
761 | for (tail = Vprocess_alist; XSYMBOL (tail) != XSYMBOL (Qnil); tail = XCONS (tail)->cdr) | |
762 | { | |
763 | proc = XCONS (XCONS (tail)->car)->cdr; | |
764 | p = XPROCESS (proc); | |
765 | if (EQ (p->childp, Qt) && XFASTINT (p->pid) == pid) | |
766 | break; | |
767 | } | |
768 | ||
769 | if (XSYMBOL (tail) == XSYMBOL (Qnil)) | |
770 | return; | |
771 | ||
0bc439a0 | 772 | p->status = Fcons (Qexit, Fcons (make_number (vs->exitStatus), Qnil)) |
dcfdbac7 JB |
773 | } |
774 | ||
775 | syms_of_vmsproc () | |
776 | { | |
777 | defsubr (&Scall_process); | |
778 | } | |
779 | ||
780 | init_vmsproc () | |
781 | { | |
782 | char *malloc (); | |
783 | int i; | |
784 | VMS_PROC_STUFF *vs; | |
785 | ||
786 | for (vs=procList, i=0; i<MAX_EVENT_FLAGS+1; i++, vs++) | |
787 | { | |
788 | vs->busy = 0; | |
789 | vs->eventFlag = i; | |
790 | sys$clref (i); | |
791 | vs->inputChan = 0; | |
792 | vs->pid = 0; | |
793 | } | |
794 | procList[0].busy = 1; /* Zero is reserved */ | |
795 | } |