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7942b8ae RS |
1 | /* VMS subprocess and command interface. |
2 | Copyright (C) 1987, 1988 Free Software Foundation, Inc. | |
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 | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
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 | /* Written by Mukesh Prasad. */ | |
21 | ||
22 | /* | |
23 | * INTERFACE PROVIDED BY EMACS FOR VMS SUBPROCESSES: | |
24 | * | |
25 | * Emacs provides the following functions: | |
26 | * | |
27 | * "spawn-subprocess", which takes as arguments: | |
28 | * | |
29 | * (i) an integer to identify the spawned subprocess in future | |
30 | * operations, | |
31 | * (ii) A function to process input from the subprocess, and | |
32 | * (iii) A function to be called upon subprocess termination. | |
33 | * | |
34 | * First argument is required. If second argument is missing or nil, | |
35 | * the default action is to insert all received messages at the current | |
36 | * location in the current buffer. If third argument is missing or nil, | |
37 | * no action is taken upon subprocess termination. | |
38 | * The input-handler is called as | |
39 | * (input-handler num string) | |
40 | * where num is the identifying integer for the subprocess and string | |
41 | * is a string received from the subprocess. exit-handler is called | |
42 | * with the identifying integer as the argument. | |
43 | * | |
44 | * "send-command-to-subprocess" takes two arguments: | |
45 | * | |
46 | * (i) Subprocess identifying integer. | |
47 | * (ii) String to send as a message to the subprocess. | |
48 | * | |
49 | * "stop-subprocess" takes the subprocess identifying integer as | |
50 | * argument. | |
51 | * | |
52 | * Implementation is done by spawning an asynchronous subprocess, and | |
53 | * communicating to it via mailboxes. | |
54 | */ | |
55 | ||
56 | #ifdef VMS | |
57 | ||
58 | #include <stdio.h> | |
59 | #include <ctype.h> | |
60 | #undef NULL | |
61 | ||
18160b98 | 62 | #include <config.h> |
7942b8ae RS |
63 | #include "lisp.h" |
64 | #include <descrip.h> | |
65 | #include <dvidef.h> | |
66 | #include <prvdef.h> | |
67 | /* #include <clidef.h> */ | |
68 | #include <iodef.h> | |
69 | #include <ssdef.h> | |
70 | #include <errno.h> | |
71 | ||
72 | #ifdef VMS4_4 /* I am being cautious; perhaps this exists in older versions */ | |
73 | #include <jpidef.h> | |
74 | #endif | |
75 | ||
76 | /* #include <syidef.h> */ | |
77 | ||
78 | #define CLI$M_NOWAIT 1 /* clidef.h is missing from C library */ | |
79 | #define SYI$_VERSION 4096 /* syidef.h is missing from C library */ | |
80 | #define JPI$_CLINAME 522 /* JPI$_CLINAME is missing from jpidef.h */ | |
81 | #define JPI$_MASTER_PID 805 /* JPI$_MASTER_PID missing from jpidef.h */ | |
82 | #define LIB$_NOSUCHSYM 1409892 /* libclidef.h missing */ | |
83 | ||
84 | #define MSGSIZE 160 /* Maximum size for mailbox operations */ | |
85 | ||
86 | #ifndef PRV$V_ACNT | |
87 | ||
88 | /* these defines added as hack for VMS 5.1-1. SJones, 8-17-89 */ | |
89 | /* this is _really_ nasty and needs to be changed ASAP - should see about | |
90 | using the union defined in SYS$LIBRARY:PRVDEF.H under v5 */ | |
91 | ||
92 | #define PRV$V_ACNT 0x09 | |
93 | #define PRV$V_ALLSPOOL 0x04 | |
94 | #define PRV$V_ALTPRI 0x0D | |
95 | #define PRV$V_BUGCHK 0x17 | |
96 | #define PRV$V_BYPASS 0x1D | |
97 | #define PRV$V_CMEXEC 0x01 | |
98 | #define PRV$V_CMKRNL 0x00 | |
99 | #define PRV$V_DETACH 0x05 | |
100 | #define PRV$V_DIAGNOSE 0x06 | |
101 | #define PRV$V_DOWNGRADE 0x21 | |
102 | #define PRV$V_EXQUOTA 0x13 | |
103 | #define PRV$V_GROUP 0x08 | |
104 | #define PRV$V_GRPNAM 0x03 | |
105 | #define PRV$V_GRPPRV 0x22 | |
106 | #define PRV$V_LOG_IO 0x07 | |
107 | #define PRV$V_MOUNT 0x11 | |
108 | #define PRV$V_NETMBX 0x14 | |
109 | #define PRV$V_NOACNT 0x09 | |
110 | #define PRV$V_OPER 0x12 | |
111 | #define PRV$V_PFNMAP 0x1A | |
112 | #define PRV$V_PHY_IO 0x16 | |
113 | #define PRV$V_PRMCEB 0x0A | |
114 | #define PRV$V_PRMGBL 0x18 | |
115 | #define PRV$V_PRMJNL 0x25 | |
116 | #define PRV$V_PRMMBX 0x0B | |
117 | #define PRV$V_PSWAPM 0x0C | |
118 | #define PRV$V_READALL 0x23 | |
119 | #define PRV$V_SECURITY 0x26 | |
120 | #define PRV$V_SETPRI 0x0D | |
121 | #define PRV$V_SETPRV 0x0E | |
122 | #define PRV$V_SHARE 0x1F | |
123 | #define PRV$V_SHMEM 0x1B | |
124 | #define PRV$V_SYSGBL 0x19 | |
125 | #define PRV$V_SYSLCK 0x1E | |
126 | #define PRV$V_SYSNAM 0x02 | |
127 | #define PRV$V_SYSPRV 0x1C | |
128 | #define PRV$V_TMPJNL 0x24 | |
129 | #define PRV$V_TMPMBX 0x0F | |
130 | #define PRV$V_UPGRADE 0x20 | |
131 | #define PRV$V_VOLPRO 0x15 | |
132 | #define PRV$V_WORLD 0x10 | |
133 | #endif | |
134 | ||
135 | /* IO status block for mailbox operations. */ | |
136 | struct mbx_iosb | |
137 | { | |
138 | short status; | |
139 | short size; | |
140 | int pid; | |
141 | }; | |
142 | ||
143 | /* Structure for maintaining linked list of subprocesses. */ | |
144 | struct process_list | |
145 | { | |
146 | int name; /* Numeric identifier for subprocess */ | |
147 | int process_id; /* VMS process address */ | |
148 | int process_active; /* 1 iff process has not exited yet */ | |
149 | int mbx_chan; /* Mailbox channel to write to process */ | |
150 | struct mbx_iosb iosb; /* IO status block for write operations */ | |
151 | Lisp_Object input_handler; /* Input handler for subprocess */ | |
152 | Lisp_Object exit_handler; /* Exit handler for subprocess */ | |
153 | struct process_list * next; /* Linked list chain */ | |
154 | }; | |
155 | ||
156 | /* Structure for privilege list. */ | |
157 | struct privilege_list | |
158 | { | |
159 | char * name; | |
160 | int mask; | |
161 | }; | |
162 | ||
163 | /* Structure for finding VMS related information. */ | |
164 | struct vms_objlist | |
165 | { | |
166 | char * name; /* Name of object */ | |
167 | Lisp_Object (* objfn)(); /* Function to retrieve VMS object */ | |
168 | }; | |
169 | ||
170 | static int exit_ast (); /* Called upon subprocess exit */ | |
171 | static int create_mbx (); /* Creates mailbox */ | |
172 | static void mbx_msg (); /* Writes null terminated string to mbx */ | |
173 | static void write_to_mbx (); /* Writes message to string */ | |
174 | static void start_mbx_input (); /* Queues I/O request to mailbox */ | |
175 | ||
176 | static int input_mbx_chan = 0; /* Channel to read subprocess input on */ | |
177 | static char input_mbx_name[20]; | |
178 | /* Storage for mailbox device name */ | |
179 | static struct dsc$descriptor_s input_mbx_dsc; | |
180 | /* Descriptor for mailbox device name */ | |
181 | static struct process_list * process_list = 0; | |
182 | /* Linked list of subprocesses */ | |
183 | static char mbx_buffer[MSGSIZE]; | |
184 | /* Buffer to read from subprocesses */ | |
185 | static struct mbx_iosb input_iosb; | |
186 | /* IO status block for mailbox reads */ | |
187 | ||
188 | int have_process_input, /* Non-zero iff subprocess input pending */ | |
189 | process_exited; /* Non-zero iff suprocess exit pending */ | |
190 | ||
191 | /* List of privilege names and mask offsets */ | |
192 | static struct privilege_list priv_list[] = { | |
193 | ||
194 | { "ACNT", PRV$V_ACNT }, | |
195 | { "ALLSPOOL", PRV$V_ALLSPOOL }, | |
196 | { "ALTPRI", PRV$V_ALTPRI }, | |
197 | { "BUGCHK", PRV$V_BUGCHK }, | |
198 | { "BYPASS", PRV$V_BYPASS }, | |
199 | { "CMEXEC", PRV$V_CMEXEC }, | |
200 | { "CMKRNL", PRV$V_CMKRNL }, | |
201 | { "DETACH", PRV$V_DETACH }, | |
202 | { "DIAGNOSE", PRV$V_DIAGNOSE }, | |
203 | { "DOWNGRADE", PRV$V_DOWNGRADE }, /* Isn't VMS as low as you can go? */ | |
204 | { "EXQUOTA", PRV$V_EXQUOTA }, | |
205 | { "GRPPRV", PRV$V_GRPPRV }, | |
206 | { "GROUP", PRV$V_GROUP }, | |
207 | { "GRPNAM", PRV$V_GRPNAM }, | |
208 | { "LOG_IO", PRV$V_LOG_IO }, | |
209 | { "MOUNT", PRV$V_MOUNT }, | |
210 | { "NETMBX", PRV$V_NETMBX }, | |
211 | { "NOACNT", PRV$V_NOACNT }, | |
212 | { "OPER", PRV$V_OPER }, | |
213 | { "PFNMAP", PRV$V_PFNMAP }, | |
214 | { "PHY_IO", PRV$V_PHY_IO }, | |
215 | { "PRMCEB", PRV$V_PRMCEB }, | |
216 | { "PRMGBL", PRV$V_PRMGBL }, | |
217 | { "PRMJNL", PRV$V_PRMJNL }, | |
218 | { "PRMMBX", PRV$V_PRMMBX }, | |
219 | { "PSWAPM", PRV$V_PSWAPM }, | |
220 | { "READALL", PRV$V_READALL }, | |
221 | { "SECURITY", PRV$V_SECURITY }, | |
222 | { "SETPRI", PRV$V_SETPRI }, | |
223 | { "SETPRV", PRV$V_SETPRV }, | |
224 | { "SHARE", PRV$V_SHARE }, | |
225 | { "SHMEM", PRV$V_SHMEM }, | |
226 | { "SYSGBL", PRV$V_SYSGBL }, | |
227 | { "SYSLCK", PRV$V_SYSLCK }, | |
228 | { "SYSNAM", PRV$V_SYSNAM }, | |
229 | { "SYSPRV", PRV$V_SYSPRV }, | |
230 | { "TMPJNL", PRV$V_TMPJNL }, | |
231 | { "TMPMBX", PRV$V_TMPMBX }, | |
232 | { "UPGRADE", PRV$V_UPGRADE }, | |
233 | { "VOLPRO", PRV$V_VOLPRO }, | |
234 | { "WORLD", PRV$V_WORLD }, | |
235 | ||
236 | }; | |
237 | ||
238 | static Lisp_Object | |
239 | vms_account(), vms_cliname(), vms_owner(), vms_grp(), vms_image(), | |
240 | vms_parent(), vms_pid(), vms_prcnam(), vms_terminal(), vms_uic_int(), | |
241 | vms_uic_str(), vms_username(), vms_version_fn(), vms_trnlog(), | |
242 | vms_symbol(), vms_proclist(); | |
243 | ||
244 | /* Table of arguments to Fvms_object, and the handlers that get the data. */ | |
245 | ||
246 | static struct vms_objlist vms_object [] = { | |
247 | { "ACCOUNT", vms_account }, /* Returns account name as a string */ | |
248 | { "CLINAME", vms_cliname }, /* Returns CLI name (string) */ | |
249 | { "OWNER", vms_owner }, /* Returns owner process's PID (int) */ | |
250 | { "GRP", vms_grp }, /* Returns group number of UIC (int) */ | |
251 | { "IMAGE", vms_image }, /* Returns executing image (string) */ | |
252 | { "PARENT", vms_parent }, /* Returns parent proc's PID (int) */ | |
253 | { "PID", vms_pid }, /* Returns process's PID (int) */ | |
254 | { "PRCNAM", vms_prcnam }, /* Returns process's name (string) */ | |
255 | { "TERMINAL", vms_terminal }, /* Returns terminal name (string) */ | |
256 | { "UIC", vms_uic_int }, /* Returns UIC as integer */ | |
257 | { "UICGRP", vms_uic_str }, /* Returns UIC as string */ | |
258 | { "USERNAME", vms_username }, /* Returns username (string) */ | |
259 | { "VERSION", vms_version_fn },/* Returns VMS version (string) */ | |
260 | { "LOGICAL", vms_trnlog }, /* Translates VMS logical name */ | |
261 | { "DCL-SYMBOL", vms_symbol }, /* Translates DCL symbol */ | |
262 | { "PROCLIST", vms_proclist }, /* Returns list of all PIDs on system */ | |
263 | }; | |
264 | ||
265 | Lisp_Object Qdefault_subproc_input_handler; | |
266 | ||
267 | extern int process_ef; /* Event flag for subprocess operations */ | |
268 | ||
269 | DEFUN ("default-subprocess-input-handler", | |
270 | Fdefault_subproc_input_handler, Sdefault_subproc_input_handler, | |
271 | 2, 2, 0, | |
272 | "Default input handler for input from spawned subprocesses.") | |
273 | (name, input) | |
274 | Lisp_Object name, input; | |
275 | { | |
276 | /* Just insert in current buffer */ | |
277 | insert1 (input); | |
278 | insert ("\n", 1); | |
279 | } | |
280 | ||
281 | DEFUN ("spawn-subprocess", Fspawn_subprocess, Sspawn_subprocess, 1, 3, 0, | |
282 | "Spawn an asynchronous VMS suprocess for command processing.") | |
283 | (name, input_handler, exit_handler) | |
284 | Lisp_Object name, input_handler, exit_handler; | |
285 | { | |
286 | int status; | |
287 | char output_mbx_name[20]; | |
288 | struct dsc$descriptor_s output_mbx_dsc; | |
289 | struct process_list *ptr, *p, *prev; | |
290 | ||
291 | CHECK_NUMBER (name, 0); | |
292 | if (! input_mbx_chan) | |
293 | { | |
294 | if (! create_mbx (&input_mbx_dsc, input_mbx_name, &input_mbx_chan, 1)) | |
295 | return Qnil; | |
296 | start_mbx_input (); | |
297 | } | |
298 | ptr = 0; | |
299 | prev = 0; | |
300 | while (ptr) | |
301 | { | |
302 | struct process_list *next = ptr->next; | |
303 | if (ptr->name == XFASTINT (name)) | |
304 | { | |
305 | if (ptr->process_active) | |
306 | return Qt; | |
307 | ||
308 | /* Delete this process and run its exit handler. */ | |
309 | if (prev) | |
310 | prev->next = next; | |
311 | else | |
312 | process_list = next; | |
d427b66a | 313 | if (! NILP (ptr->exit_handler)) |
7942b8ae RS |
314 | Feval (Fcons (ptr->exit_handler, Fcons (make_number (ptr->name), |
315 | Qnil))); | |
316 | sys$dassgn (ptr->mbx_chan); | |
317 | break; | |
318 | } | |
319 | else | |
320 | prev = ptr; | |
321 | ptr = next; | |
322 | } | |
323 | if (! ptr) | |
324 | ptr = xmalloc (sizeof (struct process_list)); | |
325 | if (! create_mbx (&output_mbx_dsc, output_mbx_name, &ptr->mbx_chan, 2)) | |
326 | { | |
327 | free (ptr); | |
328 | return Qnil; | |
329 | } | |
d427b66a | 330 | if (NILP (input_handler)) |
7942b8ae RS |
331 | input_handler = Qdefault_subproc_input_handler; |
332 | ptr->input_handler = input_handler; | |
333 | ptr->exit_handler = exit_handler; | |
334 | message ("Creating subprocess..."); | |
335 | status = lib$spawn (0, &output_mbx_dsc, &input_mbx_dsc, &CLI$M_NOWAIT, 0, | |
336 | &ptr->process_id, 0, 0, exit_ast, &ptr->process_active); | |
337 | if (! (status & 1)) | |
338 | { | |
339 | sys$dassgn (ptr->mbx_chan); | |
340 | free (ptr); | |
341 | error ("Unable to spawn subprocess"); | |
342 | return Qnil; | |
343 | } | |
344 | ptr->name = XFASTINT (name); | |
345 | ptr->next = process_list; | |
346 | ptr->process_active = 1; | |
347 | process_list = ptr; | |
348 | message ("Creating subprocess...done"); | |
349 | return Qt; | |
350 | } | |
351 | ||
352 | static void | |
353 | mbx_msg (ptr, msg) | |
354 | struct process_list *ptr; | |
355 | char *msg; | |
356 | { | |
357 | write_to_mbx (ptr, msg, strlen (msg)); | |
358 | } | |
359 | ||
360 | DEFUN ("send-command-to-subprocess", | |
361 | Fsend_command_to_subprocess, Ssend_command_to_subprocess, 2, 2, | |
362 | "sSend command to subprocess: \nsSend subprocess %s command: ", | |
363 | "Send to VMS subprocess named NAME the string COMMAND.") | |
364 | (name, command) | |
365 | Lisp_Object name, command; | |
366 | { | |
367 | struct process_list * ptr; | |
368 | ||
369 | CHECK_NUMBER (name, 0); | |
370 | CHECK_STRING (command, 1); | |
371 | for (ptr = process_list; ptr; ptr = ptr->next) | |
372 | if (XFASTINT (name) == ptr->name) | |
373 | { | |
374 | write_to_mbx (ptr, XSTRING (command)->data, | |
375 | XSTRING (command)->size); | |
376 | return Qt; | |
377 | } | |
378 | return Qnil; | |
379 | } | |
380 | ||
381 | DEFUN ("stop-subprocess", Fstop_subprocess, Sstop_subprocess, 1, 1, | |
382 | "sStop subprocess: ", "Stop VMS subprocess named NAME.") | |
383 | (name) | |
384 | Lisp_Object name; | |
385 | { | |
386 | struct process_list * ptr; | |
387 | ||
388 | CHECK_NUMBER (name, 0); | |
389 | for (ptr = process_list; ptr; ptr = ptr->next) | |
390 | if (XFASTINT (name) == ptr->name) | |
391 | { | |
392 | ptr->exit_handler = Qnil; | |
393 | if (sys$delprc (&ptr->process_id, 0) & 1) | |
394 | ptr->process_active = 0; | |
395 | return Qt; | |
396 | } | |
397 | return Qnil; | |
398 | } | |
399 | ||
400 | static int | |
401 | exit_ast (active) | |
402 | int * active; | |
403 | { | |
404 | process_exited = 1; | |
405 | *active = 0; | |
406 | sys$setef (process_ef); | |
407 | } | |
408 | ||
409 | /* Process to handle input on the input mailbox. | |
410 | * Searches through the list of processes until the matching PID is found, | |
411 | * then calls its input handler. | |
412 | */ | |
413 | ||
414 | process_command_input () | |
415 | { | |
416 | struct process_list * ptr; | |
417 | char * msg; | |
418 | int msglen; | |
419 | Lisp_Object expr; | |
420 | ||
421 | msg = mbx_buffer; | |
422 | msglen = input_iosb.size; | |
423 | /* Hack around VMS oddity of sending extraneous CR/LF characters for | |
424 | * some of the commands (but not most). | |
425 | */ | |
426 | if (msglen > 0 && *msg == '\r') | |
427 | { | |
428 | msg++; | |
429 | msglen--; | |
430 | } | |
431 | if (msglen > 0 && msg[msglen - 1] == '\n') | |
432 | msglen--; | |
433 | if (msglen > 0 && msg[msglen - 1] == '\r') | |
434 | msglen--; | |
435 | /* Search for the subprocess in the linked list. | |
436 | */ | |
437 | expr = Qnil; | |
438 | for (ptr = process_list; ptr; ptr = ptr->next) | |
439 | if (ptr->process_id == input_iosb.pid) | |
440 | { | |
441 | expr = Fcons (ptr->input_handler, | |
442 | Fcons (make_number (ptr->name), | |
443 | Fcons (make_string (msg, msglen), | |
444 | Qnil))); | |
445 | break; | |
446 | } | |
447 | have_process_input = 0; | |
448 | start_mbx_input (); | |
449 | clear_waiting_for_input (); /* Otherwise Ctl-g will cause crash. JCB */ | |
d427b66a | 450 | if (! NILP (expr)) |
7942b8ae RS |
451 | Feval (expr); |
452 | } | |
453 | ||
454 | /* Searches process list for any processes which have exited. Calls their | |
455 | * exit handlers and removes them from the process list. | |
456 | */ | |
457 | ||
458 | process_exit () | |
459 | { | |
460 | struct process_list * ptr, * prev, * next; | |
461 | ||
462 | process_exited = 0; | |
463 | prev = 0; | |
464 | ptr = process_list; | |
465 | while (ptr) | |
466 | { | |
467 | next = ptr->next; | |
468 | if (! ptr->process_active) | |
469 | { | |
470 | if (prev) | |
471 | prev->next = next; | |
472 | else | |
473 | process_list = next; | |
d427b66a | 474 | if (! NILP (ptr->exit_handler)) |
7942b8ae RS |
475 | Feval (Fcons (ptr->exit_handler, Fcons (make_number (ptr->name), |
476 | Qnil))); | |
477 | sys$dassgn (ptr->mbx_chan); | |
478 | free (ptr); | |
479 | } | |
480 | else | |
481 | prev = ptr; | |
482 | ptr = next; | |
483 | } | |
484 | } | |
485 | ||
486 | /* Called at emacs exit. | |
487 | */ | |
488 | ||
489 | kill_vms_processes () | |
490 | { | |
491 | struct process_list * ptr; | |
492 | ||
493 | for (ptr = process_list; ptr; ptr = ptr->next) | |
494 | if (ptr->process_active) | |
495 | { | |
496 | sys$dassgn (ptr->mbx_chan); | |
497 | sys$delprc (&ptr->process_id, 0); | |
498 | } | |
499 | sys$dassgn (input_mbx_chan); | |
500 | process_list = 0; | |
501 | input_mbx_chan = 0; | |
502 | } | |
503 | ||
504 | /* Creates a temporary mailbox and retrieves its device name in 'buf'. | |
505 | * Makes the descriptor pointed to by 'dsc' refer to this device. | |
506 | * 'buffer_factor' is used to allow sending messages asynchronously | |
507 | * till some point. | |
508 | */ | |
509 | ||
510 | static int | |
511 | create_mbx (dsc, buf, chan, buffer_factor) | |
512 | struct dsc$descriptor_s *dsc; | |
513 | char *buf; | |
514 | int *chan; | |
515 | int buffer_factor; | |
516 | { | |
517 | int strval[2]; | |
518 | int status; | |
519 | ||
520 | status = sys$crembx (0, chan, MSGSIZE, MSGSIZE * buffer_factor, 0, 0, 0); | |
521 | if (! (status & 1)) | |
522 | { | |
523 | message ("Unable to create mailbox. Need TMPMBX privilege."); | |
524 | return 0; | |
525 | } | |
526 | strval[0] = 16; | |
527 | strval[1] = buf; | |
528 | status = lib$getdvi (&DVI$_DEVNAM, chan, 0, 0, strval, | |
529 | &dsc->dsc$w_length); | |
530 | if (! (status & 1)) | |
531 | return 0; | |
532 | dsc->dsc$b_dtype = DSC$K_DTYPE_T; | |
533 | dsc->dsc$b_class = DSC$K_CLASS_S; | |
534 | dsc->dsc$a_pointer = buf; | |
535 | return 1; | |
536 | } /* create_mbx */ | |
537 | ||
538 | /* AST routine to be called upon receiving mailbox input. | |
539 | * Sets flag telling keyboard routines that input is available. | |
540 | */ | |
541 | ||
542 | static int | |
543 | mbx_input_ast () | |
544 | { | |
545 | have_process_input = 1; | |
546 | } | |
547 | ||
548 | /* Issue a QIO request on the input mailbox. | |
549 | */ | |
550 | static void | |
551 | start_mbx_input () | |
552 | { | |
553 | sys$qio (process_ef, input_mbx_chan, IO$_READVBLK, &input_iosb, | |
554 | mbx_input_ast, 0, mbx_buffer, sizeof (mbx_buffer), | |
555 | 0, 0, 0, 0); | |
556 | } | |
557 | ||
558 | /* Send a message to the subprocess input mailbox, without blocking if | |
559 | * possible. | |
560 | */ | |
561 | static void | |
562 | write_to_mbx (ptr, buf, len) | |
563 | struct process_list *ptr; | |
564 | char *buf; | |
565 | int len; | |
566 | { | |
567 | sys$qiow (0, ptr->mbx_chan, IO$_WRITEVBLK | IO$M_NOW, &ptr->iosb, | |
568 | 0, 0, buf, len, 0, 0, 0, 0); | |
569 | } | |
570 | ||
571 | DEFUN ("setprv", Fsetprv, Ssetprv, 1, 3, 0, | |
572 | "Set or reset a VMS privilege. First arg is privilege name.\n\ | |
573 | Second arg is t or nil, indicating whether the privilege is to be\n\ | |
574 | set or reset. Default is nil. Returns t if success, nil if not.\n\ | |
575 | If third arg is non-nil, does not change privilege, but returns t\n\ | |
576 | or nil depending upon whether the privilege is already enabled.") | |
577 | (priv, value, getprv) | |
578 | Lisp_Object priv, value, getprv; | |
579 | { | |
580 | int prvmask[2], prvlen, newmask[2]; | |
581 | char * prvname; | |
582 | int found, i; | |
583 | struct privilege_list * ptr; | |
584 | ||
585 | CHECK_STRING (priv, 0); | |
586 | priv = Fupcase (priv); | |
587 | prvname = XSTRING (priv)->data; | |
588 | prvlen = XSTRING (priv)->size; | |
589 | found = 0; | |
590 | prvmask[0] = 0; | |
591 | prvmask[1] = 0; | |
592 | for (i = 0; i < sizeof (priv_list) / sizeof (priv_list[0]); i++) | |
593 | { | |
594 | ptr = &priv_list[i]; | |
595 | if (prvlen == strlen (ptr->name) && | |
596 | bcmp (prvname, ptr->name, prvlen) == 0) | |
597 | { | |
598 | if (ptr->mask >= 32) | |
599 | prvmask[1] = 1 << (ptr->mask % 32); | |
600 | else | |
601 | prvmask[0] = 1 << ptr->mask; | |
602 | found = 1; | |
603 | break; | |
604 | } | |
605 | } | |
606 | if (! found) | |
607 | error ("Unknown privilege name %s", XSTRING (priv)->data); | |
d427b66a | 608 | if (NILP (getprv)) |
7942b8ae | 609 | { |
d427b66a | 610 | if (sys$setprv (NILP (value) ? 0 : 1, prvmask, 0, 0) == SS$_NORMAL) |
7942b8ae RS |
611 | return Qt; |
612 | return Qnil; | |
613 | } | |
614 | /* Get old priv value */ | |
615 | if (sys$setprv (0, 0, 0, newmask) != SS$_NORMAL) | |
616 | return Qnil; | |
617 | if ((newmask[0] & prvmask[0]) | |
618 | || (newmask[1] & prvmask[1])) | |
619 | return Qt; | |
620 | return Qnil; | |
621 | } | |
622 | \f | |
623 | /* Retrieves VMS system information. */ | |
624 | ||
625 | #ifdef VMS4_4 /* I don't know whether these functions work in old versions */ | |
626 | ||
627 | DEFUN ("vms-system-info", Fvms_system_info, Svms_system_info, 1, 3, 0, | |
628 | "Retrieve VMS process and system information.\n\ | |
629 | The first argument (a string) specifies the type of information desired.\n\ | |
630 | The other arguments depend on the type you select.\n\ | |
631 | For information about a process, the second argument is a process ID\n\ | |
632 | or a process name, with the current process as a default.\n\ | |
633 | These are the possibilities for the first arg (upper or lower case ok):\n\ | |
634 | account Returns account name\n\ | |
635 | cliname Returns CLI name\n\ | |
636 | owner Returns owner process's PID\n\ | |
637 | grp Returns group number\n\ | |
638 | parent Returns parent process's PID\n\ | |
639 | pid Returns process's PID\n\ | |
640 | prcnam Returns process's name\n\ | |
641 | terminal Returns terminal name\n\ | |
642 | uic Returns UIC number\n\ | |
643 | uicgrp Returns formatted [UIC,GRP]\n\ | |
644 | username Returns username\n\ | |
645 | version Returns VMS version\n\ | |
646 | logical Translates VMS logical name (second argument)\n\ | |
647 | dcl-symbol Translates DCL symbol (second argument)\n\ | |
648 | proclist Returns list of all PIDs on system (needs WORLD privilege)." ) | |
649 | (type, arg1, arg2) | |
650 | Lisp_Object type, arg1, arg2; | |
651 | { | |
652 | int i, typelen; | |
653 | char * typename; | |
654 | struct vms_objlist * ptr; | |
655 | ||
656 | CHECK_STRING (type, 0); | |
657 | type = Fupcase (type); | |
658 | typename = XSTRING (type)->data; | |
659 | typelen = XSTRING (type)->size; | |
660 | for (i = 0; i < sizeof (vms_object) / sizeof (vms_object[0]); i++) | |
661 | { | |
662 | ptr = &vms_object[i]; | |
663 | if (typelen == strlen (ptr->name) | |
664 | && bcmp (typename, ptr->name, typelen) == 0) | |
665 | return (* ptr->objfn)(arg1, arg2); | |
666 | } | |
667 | error ("Unknown object type %s", typename); | |
668 | } | |
669 | \f | |
670 | /* Given a reference to a VMS process, returns its process id. */ | |
671 | ||
672 | static int | |
673 | translate_id (pid, owner) | |
674 | Lisp_Object pid; | |
675 | int owner; /* if pid is null/0, return owner. If this | |
676 | * flag is 0, return self. */ | |
677 | { | |
678 | int status, code, id, i, numeric, size; | |
679 | char * p; | |
680 | int prcnam[2]; | |
681 | ||
d427b66a | 682 | if (NILP (pid) |
7942b8ae RS |
683 | || XTYPE (pid) == Lisp_String && XSTRING (pid)->size == 0 |
684 | || XTYPE (pid) == Lisp_Int && XFASTINT (pid) == 0) | |
685 | { | |
686 | code = owner ? JPI$_OWNER : JPI$_PID; | |
687 | status = lib$getjpi (&code, 0, 0, &id); | |
688 | if (! (status & 1)) | |
689 | error ("Cannot find %s: %s", | |
690 | owner ? "owner process" : "process id", | |
691 | vmserrstr (status)); | |
692 | return (id); | |
693 | } | |
694 | if (XTYPE (pid) == Lisp_Int) | |
695 | return (XFASTINT (pid)); | |
696 | CHECK_STRING (pid, 0); | |
697 | pid = Fupcase (pid); | |
698 | size = XSTRING (pid)->size; | |
699 | p = XSTRING (pid)->data; | |
700 | numeric = 1; | |
701 | id = 0; | |
702 | for (i = 0; i < size; i++, p++) | |
703 | if (isxdigit (*p)) | |
704 | { | |
705 | id *= 16; | |
706 | if (*p >= '0' && *p <= '9') | |
707 | id += *p - '0'; | |
708 | else | |
709 | id += *p - 'A' + 10; | |
710 | } | |
711 | else | |
712 | { | |
713 | numeric = 0; | |
714 | break; | |
715 | } | |
716 | if (numeric) | |
717 | return (id); | |
718 | prcnam[0] = XSTRING (pid)->size; | |
719 | prcnam[1] = XSTRING (pid)->data; | |
720 | status = lib$getjpi (&JPI$_PID, 0, prcnam, &id); | |
721 | if (! (status & 1)) | |
722 | error ("Cannot find process id: %s", | |
723 | vmserrstr (status)); | |
724 | return (id); | |
725 | } /* translate_id */ | |
726 | \f | |
727 | /* VMS object retrieval functions. */ | |
728 | ||
729 | static Lisp_Object | |
730 | getjpi (jpicode, arg, numeric) | |
731 | int jpicode; /* Type of GETJPI information */ | |
732 | Lisp_Object arg; | |
733 | int numeric; /* 1 if numeric value expected */ | |
734 | { | |
735 | int id, status, numval; | |
736 | char str[128]; | |
737 | int strdsc[2] = { sizeof (str), str }; | |
738 | short strlen; | |
739 | ||
740 | id = translate_id (arg, 0); | |
741 | status = lib$getjpi (&jpicode, &id, 0, &numval, strdsc, &strlen); | |
742 | if (! (status & 1)) | |
743 | error ("Unable to retrieve information: %s", | |
744 | vmserrstr (status)); | |
745 | if (numeric) | |
746 | return (make_number (numval)); | |
747 | return (make_string (str, strlen)); | |
748 | } | |
749 | ||
750 | static Lisp_Object | |
751 | vms_account (arg1, arg2) | |
752 | Lisp_Object arg1, arg2; | |
753 | { | |
754 | return getjpi (JPI$_ACCOUNT, arg1, 0); | |
755 | } | |
756 | ||
757 | static Lisp_Object | |
758 | vms_cliname (arg1, arg2) | |
759 | Lisp_Object arg1, arg2; | |
760 | { | |
761 | return getjpi (JPI$_CLINAME, arg1, 0); | |
762 | } | |
763 | ||
764 | static Lisp_Object | |
765 | vms_grp (arg1, arg2) | |
766 | Lisp_Object arg1, arg2; | |
767 | { | |
768 | return getjpi (JPI$_GRP, arg1, 1); | |
769 | } | |
770 | ||
771 | static Lisp_Object | |
772 | vms_image (arg1, arg2) | |
773 | Lisp_Object arg1, arg2; | |
774 | { | |
775 | return getjpi (JPI$_IMAGNAME, arg1, 0); | |
776 | } | |
777 | ||
778 | static Lisp_Object | |
779 | vms_owner (arg1, arg2) | |
780 | Lisp_Object arg1, arg2; | |
781 | { | |
782 | return getjpi (JPI$_OWNER, arg1, 1); | |
783 | } | |
784 | ||
785 | static Lisp_Object | |
786 | vms_parent (arg1, arg2) | |
787 | Lisp_Object arg1, arg2; | |
788 | { | |
789 | return getjpi (JPI$_MASTER_PID, arg1, 1); | |
790 | } | |
791 | ||
792 | static Lisp_Object | |
793 | vms_pid (arg1, arg2) | |
794 | Lisp_Object arg1, arg2; | |
795 | { | |
796 | return getjpi (JPI$_PID, arg1, 1); | |
797 | } | |
798 | ||
799 | static Lisp_Object | |
800 | vms_prcnam (arg1, arg2) | |
801 | Lisp_Object arg1, arg2; | |
802 | { | |
803 | return getjpi (JPI$_PRCNAM, arg1, 0); | |
804 | } | |
805 | ||
806 | static Lisp_Object | |
807 | vms_terminal (arg1, arg2) | |
808 | Lisp_Object arg1, arg2; | |
809 | { | |
810 | return getjpi (JPI$_TERMINAL, arg1, 0); | |
811 | } | |
812 | ||
813 | static Lisp_Object | |
814 | vms_uic_int (arg1, arg2) | |
815 | Lisp_Object arg1, arg2; | |
816 | { | |
817 | return getjpi (JPI$_UIC, arg1, 1); | |
818 | } | |
819 | ||
820 | static Lisp_Object | |
821 | vms_uic_str (arg1, arg2) | |
822 | Lisp_Object arg1, arg2; | |
823 | { | |
824 | return getjpi (JPI$_UIC, arg1, 0); | |
825 | } | |
826 | ||
827 | static Lisp_Object | |
828 | vms_username (arg1, arg2) | |
829 | Lisp_Object arg1, arg2; | |
830 | { | |
831 | return getjpi (JPI$_USERNAME, arg1, 0); | |
832 | } | |
833 | ||
834 | static Lisp_Object | |
835 | vms_version_fn (arg1, arg2) | |
836 | Lisp_Object arg1, arg2; | |
837 | { | |
838 | char str[40]; | |
839 | int status; | |
840 | int strdsc[2] = { sizeof (str), str }; | |
841 | short strlen; | |
842 | ||
843 | status = lib$getsyi (&SYI$_VERSION, 0, strdsc, &strlen, 0, 0); | |
844 | if (! (status & 1)) | |
845 | error ("Unable to obtain version: %s", vmserrstr (status)); | |
846 | return (make_string (str, strlen)); | |
847 | } | |
848 | ||
849 | static Lisp_Object | |
850 | vms_trnlog (arg1, arg2) | |
851 | Lisp_Object arg1, arg2; | |
852 | { | |
5ca4927a | 853 | char str[256]; /* Max logical translation is 255 bytes. */ |
7942b8ae RS |
854 | int status, symdsc[2]; |
855 | int strdsc[2] = { sizeof (str), str }; | |
856 | short length, level; | |
857 | ||
858 | CHECK_STRING (arg1, 0); | |
859 | symdsc[0] = XSTRING (arg1)->size; | |
860 | symdsc[1] = XSTRING (arg1)->data; | |
861 | status = lib$sys_trnlog (symdsc, &length, strdsc); | |
862 | if (! (status & 1)) | |
863 | error ("Unable to translate logical name: %s", vmserrstr (status)); | |
864 | if (status == SS$_NOTRAN) | |
865 | return (Qnil); | |
866 | return (make_string (str, length)); | |
867 | } | |
868 | ||
869 | static Lisp_Object | |
870 | vms_symbol (arg1, arg2) | |
871 | Lisp_Object arg1, arg2; | |
872 | { | |
5ca4927a | 873 | char str[1025]; /* Max symbol translation is 1024 bytes. */ |
7942b8ae RS |
874 | int status, symdsc[2]; |
875 | int strdsc[2] = { sizeof (str), str }; | |
876 | short length, level; | |
877 | ||
878 | CHECK_STRING (arg1, 0); | |
879 | symdsc[0] = XSTRING (arg1)->size; | |
880 | symdsc[1] = XSTRING (arg1)->data; | |
881 | status = lib$get_symbol (symdsc, strdsc, &length, &level); | |
882 | if (! (status & 1)) { | |
883 | if (status == LIB$_NOSUCHSYM) | |
884 | return (Qnil); | |
885 | else | |
886 | error ("Unable to translate symbol: %s", vmserrstr (status)); | |
887 | } | |
888 | return (make_string (str, length)); | |
889 | } | |
890 | ||
891 | static Lisp_Object | |
892 | vms_proclist (arg1, arg2) | |
893 | Lisp_Object arg1, arg2; | |
894 | { | |
895 | Lisp_Object retval; | |
896 | int id, status, pid; | |
897 | ||
898 | retval = Qnil; | |
899 | pid = -1; | |
900 | for (;;) | |
901 | { | |
902 | status = lib$getjpi (&JPI$_PID, &pid, 0, &id); | |
903 | if (status == SS$_NOMOREPROC) | |
904 | break; | |
905 | if (! (status & 1)) | |
906 | error ("Unable to get process ID: %s", vmserrstr (status)); | |
907 | retval = Fcons (make_number (id), retval); | |
908 | } | |
909 | return (Fsort (retval, intern ("<"))); | |
910 | } | |
911 | \f | |
912 | DEFUN ("shrink-to-icon", Fshrink_to_icon, Sshrink_to_icon, 0, 0, 0, | |
913 | "If emacs is running in a workstation window, shrink to an icon.") | |
914 | () | |
915 | { | |
916 | static char result[128]; | |
917 | static $DESCRIPTOR (result_descriptor, result); | |
918 | static $DESCRIPTOR (tt_name, "TT:"); | |
919 | static int chan = 0; | |
920 | static int buf = 0x9d + ('2'<<8) + ('2'<<16) + (0x9c<<24); | |
921 | int status; | |
922 | static int temp = JPI$_TERMINAL; | |
923 | ||
924 | status = lib$getjpi (&temp, 0, 0, 0, &result_descriptor, 0); | |
925 | if (status != SS$_NORMAL) | |
926 | error ("Unable to determine terminal type."); | |
927 | if (result[0] != 'W' || result[1] != 'T') /* see if workstation */ | |
928 | error ("Can't shrink-to-icon on a non workstation terminal"); | |
929 | if (!chan) /* assign channel if not assigned */ | |
930 | if ((status = sys$assign (&tt_name, &chan, 0, 0)) != SS$_NORMAL) | |
931 | error ("Can't assign terminal, %d", status); | |
932 | status = sys$qiow (0, chan, IO$_WRITEVBLK+IO$M_BREAKTHRU, 0, 0, 0, | |
933 | &buf, 4, 0, 0, 0, 0); | |
934 | if (status != SS$_NORMAL) | |
935 | error ("Can't shrink-to-icon, %d", status); | |
936 | } | |
937 | ||
938 | #endif /* VMS4_4 */ | |
939 | \f | |
940 | init_vmsfns () | |
941 | { | |
942 | process_list = 0; | |
943 | input_mbx_chan = 0; | |
944 | } | |
945 | ||
946 | syms_of_vmsfns () | |
947 | { | |
948 | defsubr (&Sdefault_subproc_input_handler); | |
949 | defsubr (&Sspawn_subprocess); | |
950 | defsubr (&Ssend_command_to_subprocess); | |
951 | defsubr (&Sstop_subprocess); | |
952 | defsubr (&Ssetprv); | |
953 | #ifdef VMS4_4 | |
954 | defsubr (&Svms_system_info); | |
955 | defsubr (&Sshrink_to_icon); | |
956 | #endif /* VMS4_4 */ | |
957 | Qdefault_subproc_input_handler = intern ("default-subprocess-input-handler"); | |
958 | staticpro (&Qdefault_subproc_input_handler); | |
959 | } | |
960 | #endif /* VMS */ | |
961 |