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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 | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
7942b8ae RS |
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. */ | |
7942b8ae RS |
20 | |
21 | /* Written by Mukesh Prasad. */ | |
22 | ||
23 | /* | |
24 | * INTERFACE PROVIDED BY EMACS FOR VMS SUBPROCESSES: | |
25 | * | |
26 | * Emacs provides the following functions: | |
27 | * | |
28 | * "spawn-subprocess", which takes as arguments: | |
29 | * | |
30 | * (i) an integer to identify the spawned subprocess in future | |
31 | * operations, | |
32 | * (ii) A function to process input from the subprocess, and | |
33 | * (iii) A function to be called upon subprocess termination. | |
34 | * | |
35 | * First argument is required. If second argument is missing or nil, | |
36 | * the default action is to insert all received messages at the current | |
37 | * location in the current buffer. If third argument is missing or nil, | |
38 | * no action is taken upon subprocess termination. | |
39 | * The input-handler is called as | |
40 | * (input-handler num string) | |
41 | * where num is the identifying integer for the subprocess and string | |
42 | * is a string received from the subprocess. exit-handler is called | |
43 | * with the identifying integer as the argument. | |
44 | * | |
45 | * "send-command-to-subprocess" takes two arguments: | |
46 | * | |
47 | * (i) Subprocess identifying integer. | |
48 | * (ii) String to send as a message to the subprocess. | |
49 | * | |
50 | * "stop-subprocess" takes the subprocess identifying integer as | |
51 | * argument. | |
52 | * | |
53 | * Implementation is done by spawning an asynchronous subprocess, and | |
54 | * communicating to it via mailboxes. | |
55 | */ | |
56 | ||
57 | #ifdef VMS | |
58 | ||
59 | #include <stdio.h> | |
60 | #include <ctype.h> | |
61 | #undef NULL | |
62 | ||
18160b98 | 63 | #include <config.h> |
7942b8ae RS |
64 | #include "lisp.h" |
65 | #include <descrip.h> | |
66 | #include <dvidef.h> | |
67 | #include <prvdef.h> | |
68 | /* #include <clidef.h> */ | |
69 | #include <iodef.h> | |
70 | #include <ssdef.h> | |
71 | #include <errno.h> | |
72 | ||
73 | #ifdef VMS4_4 /* I am being cautious; perhaps this exists in older versions */ | |
74 | #include <jpidef.h> | |
75 | #endif | |
76 | ||
77 | /* #include <syidef.h> */ | |
78 | ||
79 | #define CLI$M_NOWAIT 1 /* clidef.h is missing from C library */ | |
80 | #define SYI$_VERSION 4096 /* syidef.h is missing from C library */ | |
81 | #define JPI$_CLINAME 522 /* JPI$_CLINAME is missing from jpidef.h */ | |
82 | #define JPI$_MASTER_PID 805 /* JPI$_MASTER_PID missing from jpidef.h */ | |
83 | #define LIB$_NOSUCHSYM 1409892 /* libclidef.h missing */ | |
84 | ||
85 | #define MSGSIZE 160 /* Maximum size for mailbox operations */ | |
86 | ||
87 | #ifndef PRV$V_ACNT | |
88 | ||
89 | /* these defines added as hack for VMS 5.1-1. SJones, 8-17-89 */ | |
90 | /* this is _really_ nasty and needs to be changed ASAP - should see about | |
91 | using the union defined in SYS$LIBRARY:PRVDEF.H under v5 */ | |
92 | ||
93 | #define PRV$V_ACNT 0x09 | |
94 | #define PRV$V_ALLSPOOL 0x04 | |
95 | #define PRV$V_ALTPRI 0x0D | |
96 | #define PRV$V_BUGCHK 0x17 | |
97 | #define PRV$V_BYPASS 0x1D | |
98 | #define PRV$V_CMEXEC 0x01 | |
99 | #define PRV$V_CMKRNL 0x00 | |
100 | #define PRV$V_DETACH 0x05 | |
101 | #define PRV$V_DIAGNOSE 0x06 | |
102 | #define PRV$V_DOWNGRADE 0x21 | |
103 | #define PRV$V_EXQUOTA 0x13 | |
104 | #define PRV$V_GROUP 0x08 | |
105 | #define PRV$V_GRPNAM 0x03 | |
106 | #define PRV$V_GRPPRV 0x22 | |
107 | #define PRV$V_LOG_IO 0x07 | |
108 | #define PRV$V_MOUNT 0x11 | |
109 | #define PRV$V_NETMBX 0x14 | |
110 | #define PRV$V_NOACNT 0x09 | |
111 | #define PRV$V_OPER 0x12 | |
112 | #define PRV$V_PFNMAP 0x1A | |
113 | #define PRV$V_PHY_IO 0x16 | |
114 | #define PRV$V_PRMCEB 0x0A | |
115 | #define PRV$V_PRMGBL 0x18 | |
116 | #define PRV$V_PRMJNL 0x25 | |
117 | #define PRV$V_PRMMBX 0x0B | |
118 | #define PRV$V_PSWAPM 0x0C | |
119 | #define PRV$V_READALL 0x23 | |
120 | #define PRV$V_SECURITY 0x26 | |
121 | #define PRV$V_SETPRI 0x0D | |
122 | #define PRV$V_SETPRV 0x0E | |
123 | #define PRV$V_SHARE 0x1F | |
124 | #define PRV$V_SHMEM 0x1B | |
125 | #define PRV$V_SYSGBL 0x19 | |
126 | #define PRV$V_SYSLCK 0x1E | |
127 | #define PRV$V_SYSNAM 0x02 | |
128 | #define PRV$V_SYSPRV 0x1C | |
129 | #define PRV$V_TMPJNL 0x24 | |
130 | #define PRV$V_TMPMBX 0x0F | |
131 | #define PRV$V_UPGRADE 0x20 | |
132 | #define PRV$V_VOLPRO 0x15 | |
133 | #define PRV$V_WORLD 0x10 | |
134 | #endif | |
135 | ||
136 | /* IO status block for mailbox operations. */ | |
137 | struct mbx_iosb | |
138 | { | |
139 | short status; | |
140 | short size; | |
141 | int pid; | |
142 | }; | |
143 | ||
144 | /* Structure for maintaining linked list of subprocesses. */ | |
145 | struct process_list | |
146 | { | |
147 | int name; /* Numeric identifier for subprocess */ | |
148 | int process_id; /* VMS process address */ | |
149 | int process_active; /* 1 iff process has not exited yet */ | |
150 | int mbx_chan; /* Mailbox channel to write to process */ | |
151 | struct mbx_iosb iosb; /* IO status block for write operations */ | |
152 | Lisp_Object input_handler; /* Input handler for subprocess */ | |
153 | Lisp_Object exit_handler; /* Exit handler for subprocess */ | |
154 | struct process_list * next; /* Linked list chain */ | |
155 | }; | |
156 | ||
157 | /* Structure for privilege list. */ | |
158 | struct privilege_list | |
159 | { | |
160 | char * name; | |
161 | int mask; | |
162 | }; | |
163 | ||
164 | /* Structure for finding VMS related information. */ | |
165 | struct vms_objlist | |
166 | { | |
167 | char * name; /* Name of object */ | |
168 | Lisp_Object (* objfn)(); /* Function to retrieve VMS object */ | |
169 | }; | |
170 | ||
171 | static int exit_ast (); /* Called upon subprocess exit */ | |
172 | static int create_mbx (); /* Creates mailbox */ | |
173 | static void mbx_msg (); /* Writes null terminated string to mbx */ | |
174 | static void write_to_mbx (); /* Writes message to string */ | |
175 | static void start_mbx_input (); /* Queues I/O request to mailbox */ | |
176 | ||
177 | static int input_mbx_chan = 0; /* Channel to read subprocess input on */ | |
178 | static char input_mbx_name[20]; | |
179 | /* Storage for mailbox device name */ | |
180 | static struct dsc$descriptor_s input_mbx_dsc; | |
181 | /* Descriptor for mailbox device name */ | |
182 | static struct process_list * process_list = 0; | |
183 | /* Linked list of subprocesses */ | |
184 | static char mbx_buffer[MSGSIZE]; | |
185 | /* Buffer to read from subprocesses */ | |
186 | static struct mbx_iosb input_iosb; | |
187 | /* IO status block for mailbox reads */ | |
188 | ||
189 | int have_process_input, /* Non-zero iff subprocess input pending */ | |
190 | process_exited; /* Non-zero iff suprocess exit pending */ | |
191 | ||
192 | /* List of privilege names and mask offsets */ | |
193 | static struct privilege_list priv_list[] = { | |
194 | ||
195 | { "ACNT", PRV$V_ACNT }, | |
196 | { "ALLSPOOL", PRV$V_ALLSPOOL }, | |
197 | { "ALTPRI", PRV$V_ALTPRI }, | |
198 | { "BUGCHK", PRV$V_BUGCHK }, | |
199 | { "BYPASS", PRV$V_BYPASS }, | |
200 | { "CMEXEC", PRV$V_CMEXEC }, | |
201 | { "CMKRNL", PRV$V_CMKRNL }, | |
202 | { "DETACH", PRV$V_DETACH }, | |
203 | { "DIAGNOSE", PRV$V_DIAGNOSE }, | |
204 | { "DOWNGRADE", PRV$V_DOWNGRADE }, /* Isn't VMS as low as you can go? */ | |
205 | { "EXQUOTA", PRV$V_EXQUOTA }, | |
206 | { "GRPPRV", PRV$V_GRPPRV }, | |
207 | { "GROUP", PRV$V_GROUP }, | |
208 | { "GRPNAM", PRV$V_GRPNAM }, | |
209 | { "LOG_IO", PRV$V_LOG_IO }, | |
210 | { "MOUNT", PRV$V_MOUNT }, | |
211 | { "NETMBX", PRV$V_NETMBX }, | |
212 | { "NOACNT", PRV$V_NOACNT }, | |
213 | { "OPER", PRV$V_OPER }, | |
214 | { "PFNMAP", PRV$V_PFNMAP }, | |
215 | { "PHY_IO", PRV$V_PHY_IO }, | |
216 | { "PRMCEB", PRV$V_PRMCEB }, | |
217 | { "PRMGBL", PRV$V_PRMGBL }, | |
218 | { "PRMJNL", PRV$V_PRMJNL }, | |
219 | { "PRMMBX", PRV$V_PRMMBX }, | |
220 | { "PSWAPM", PRV$V_PSWAPM }, | |
221 | { "READALL", PRV$V_READALL }, | |
222 | { "SECURITY", PRV$V_SECURITY }, | |
223 | { "SETPRI", PRV$V_SETPRI }, | |
224 | { "SETPRV", PRV$V_SETPRV }, | |
225 | { "SHARE", PRV$V_SHARE }, | |
226 | { "SHMEM", PRV$V_SHMEM }, | |
227 | { "SYSGBL", PRV$V_SYSGBL }, | |
228 | { "SYSLCK", PRV$V_SYSLCK }, | |
229 | { "SYSNAM", PRV$V_SYSNAM }, | |
230 | { "SYSPRV", PRV$V_SYSPRV }, | |
231 | { "TMPJNL", PRV$V_TMPJNL }, | |
232 | { "TMPMBX", PRV$V_TMPMBX }, | |
233 | { "UPGRADE", PRV$V_UPGRADE }, | |
234 | { "VOLPRO", PRV$V_VOLPRO }, | |
235 | { "WORLD", PRV$V_WORLD }, | |
236 | ||
237 | }; | |
238 | ||
239 | static Lisp_Object | |
240 | vms_account(), vms_cliname(), vms_owner(), vms_grp(), vms_image(), | |
241 | vms_parent(), vms_pid(), vms_prcnam(), vms_terminal(), vms_uic_int(), | |
242 | vms_uic_str(), vms_username(), vms_version_fn(), vms_trnlog(), | |
243 | vms_symbol(), vms_proclist(); | |
244 | ||
245 | /* Table of arguments to Fvms_object, and the handlers that get the data. */ | |
246 | ||
247 | static struct vms_objlist vms_object [] = { | |
248 | { "ACCOUNT", vms_account }, /* Returns account name as a string */ | |
249 | { "CLINAME", vms_cliname }, /* Returns CLI name (string) */ | |
250 | { "OWNER", vms_owner }, /* Returns owner process's PID (int) */ | |
251 | { "GRP", vms_grp }, /* Returns group number of UIC (int) */ | |
252 | { "IMAGE", vms_image }, /* Returns executing image (string) */ | |
253 | { "PARENT", vms_parent }, /* Returns parent proc's PID (int) */ | |
254 | { "PID", vms_pid }, /* Returns process's PID (int) */ | |
255 | { "PRCNAM", vms_prcnam }, /* Returns process's name (string) */ | |
256 | { "TERMINAL", vms_terminal }, /* Returns terminal name (string) */ | |
257 | { "UIC", vms_uic_int }, /* Returns UIC as integer */ | |
258 | { "UICGRP", vms_uic_str }, /* Returns UIC as string */ | |
259 | { "USERNAME", vms_username }, /* Returns username (string) */ | |
260 | { "VERSION", vms_version_fn },/* Returns VMS version (string) */ | |
261 | { "LOGICAL", vms_trnlog }, /* Translates VMS logical name */ | |
262 | { "DCL-SYMBOL", vms_symbol }, /* Translates DCL symbol */ | |
263 | { "PROCLIST", vms_proclist }, /* Returns list of all PIDs on system */ | |
264 | }; | |
265 | ||
266 | Lisp_Object Qdefault_subproc_input_handler; | |
267 | ||
268 | extern int process_ef; /* Event flag for subprocess operations */ | |
269 | ||
270 | DEFUN ("default-subprocess-input-handler", | |
271 | Fdefault_subproc_input_handler, Sdefault_subproc_input_handler, | |
272 | 2, 2, 0, | |
273 | "Default input handler for input from spawned subprocesses.") | |
274 | (name, input) | |
275 | Lisp_Object name, input; | |
276 | { | |
277 | /* Just insert in current buffer */ | |
278 | insert1 (input); | |
279 | insert ("\n", 1); | |
280 | } | |
281 | ||
282 | DEFUN ("spawn-subprocess", Fspawn_subprocess, Sspawn_subprocess, 1, 3, 0, | |
283 | "Spawn an asynchronous VMS suprocess for command processing.") | |
284 | (name, input_handler, exit_handler) | |
285 | Lisp_Object name, input_handler, exit_handler; | |
286 | { | |
287 | int status; | |
288 | char output_mbx_name[20]; | |
289 | struct dsc$descriptor_s output_mbx_dsc; | |
290 | struct process_list *ptr, *p, *prev; | |
291 | ||
292 | CHECK_NUMBER (name, 0); | |
293 | if (! input_mbx_chan) | |
294 | { | |
295 | if (! create_mbx (&input_mbx_dsc, input_mbx_name, &input_mbx_chan, 1)) | |
296 | return Qnil; | |
297 | start_mbx_input (); | |
298 | } | |
299 | ptr = 0; | |
300 | prev = 0; | |
301 | while (ptr) | |
302 | { | |
303 | struct process_list *next = ptr->next; | |
304 | if (ptr->name == XFASTINT (name)) | |
305 | { | |
306 | if (ptr->process_active) | |
307 | return Qt; | |
308 | ||
309 | /* Delete this process and run its exit handler. */ | |
310 | if (prev) | |
311 | prev->next = next; | |
312 | else | |
313 | process_list = next; | |
d427b66a | 314 | if (! NILP (ptr->exit_handler)) |
7942b8ae RS |
315 | Feval (Fcons (ptr->exit_handler, Fcons (make_number (ptr->name), |
316 | Qnil))); | |
317 | sys$dassgn (ptr->mbx_chan); | |
318 | break; | |
319 | } | |
320 | else | |
321 | prev = ptr; | |
322 | ptr = next; | |
323 | } | |
324 | if (! ptr) | |
325 | ptr = xmalloc (sizeof (struct process_list)); | |
326 | if (! create_mbx (&output_mbx_dsc, output_mbx_name, &ptr->mbx_chan, 2)) | |
327 | { | |
328 | free (ptr); | |
329 | return Qnil; | |
330 | } | |
d427b66a | 331 | if (NILP (input_handler)) |
7942b8ae RS |
332 | input_handler = Qdefault_subproc_input_handler; |
333 | ptr->input_handler = input_handler; | |
334 | ptr->exit_handler = exit_handler; | |
335 | message ("Creating subprocess..."); | |
336 | status = lib$spawn (0, &output_mbx_dsc, &input_mbx_dsc, &CLI$M_NOWAIT, 0, | |
337 | &ptr->process_id, 0, 0, exit_ast, &ptr->process_active); | |
338 | if (! (status & 1)) | |
339 | { | |
340 | sys$dassgn (ptr->mbx_chan); | |
341 | free (ptr); | |
342 | error ("Unable to spawn subprocess"); | |
343 | return Qnil; | |
344 | } | |
345 | ptr->name = XFASTINT (name); | |
346 | ptr->next = process_list; | |
347 | ptr->process_active = 1; | |
348 | process_list = ptr; | |
349 | message ("Creating subprocess...done"); | |
350 | return Qt; | |
351 | } | |
352 | ||
353 | static void | |
354 | mbx_msg (ptr, msg) | |
355 | struct process_list *ptr; | |
356 | char *msg; | |
357 | { | |
358 | write_to_mbx (ptr, msg, strlen (msg)); | |
359 | } | |
360 | ||
361 | DEFUN ("send-command-to-subprocess", | |
362 | Fsend_command_to_subprocess, Ssend_command_to_subprocess, 2, 2, | |
363 | "sSend command to subprocess: \nsSend subprocess %s command: ", | |
364 | "Send to VMS subprocess named NAME the string COMMAND.") | |
365 | (name, command) | |
366 | Lisp_Object name, command; | |
367 | { | |
368 | struct process_list * ptr; | |
369 | ||
370 | CHECK_NUMBER (name, 0); | |
371 | CHECK_STRING (command, 1); | |
372 | for (ptr = process_list; ptr; ptr = ptr->next) | |
373 | if (XFASTINT (name) == ptr->name) | |
374 | { | |
375 | write_to_mbx (ptr, XSTRING (command)->data, | |
376 | XSTRING (command)->size); | |
377 | return Qt; | |
378 | } | |
379 | return Qnil; | |
380 | } | |
381 | ||
382 | DEFUN ("stop-subprocess", Fstop_subprocess, Sstop_subprocess, 1, 1, | |
383 | "sStop subprocess: ", "Stop VMS subprocess named NAME.") | |
384 | (name) | |
385 | Lisp_Object name; | |
386 | { | |
387 | struct process_list * ptr; | |
388 | ||
389 | CHECK_NUMBER (name, 0); | |
390 | for (ptr = process_list; ptr; ptr = ptr->next) | |
391 | if (XFASTINT (name) == ptr->name) | |
392 | { | |
393 | ptr->exit_handler = Qnil; | |
394 | if (sys$delprc (&ptr->process_id, 0) & 1) | |
395 | ptr->process_active = 0; | |
396 | return Qt; | |
397 | } | |
398 | return Qnil; | |
399 | } | |
400 | ||
401 | static int | |
402 | exit_ast (active) | |
403 | int * active; | |
404 | { | |
405 | process_exited = 1; | |
406 | *active = 0; | |
407 | sys$setef (process_ef); | |
408 | } | |
409 | ||
410 | /* Process to handle input on the input mailbox. | |
411 | * Searches through the list of processes until the matching PID is found, | |
412 | * then calls its input handler. | |
413 | */ | |
414 | ||
415 | process_command_input () | |
416 | { | |
417 | struct process_list * ptr; | |
418 | char * msg; | |
419 | int msglen; | |
420 | Lisp_Object expr; | |
421 | ||
422 | msg = mbx_buffer; | |
423 | msglen = input_iosb.size; | |
424 | /* Hack around VMS oddity of sending extraneous CR/LF characters for | |
425 | * some of the commands (but not most). | |
426 | */ | |
427 | if (msglen > 0 && *msg == '\r') | |
428 | { | |
429 | msg++; | |
430 | msglen--; | |
431 | } | |
432 | if (msglen > 0 && msg[msglen - 1] == '\n') | |
433 | msglen--; | |
434 | if (msglen > 0 && msg[msglen - 1] == '\r') | |
435 | msglen--; | |
436 | /* Search for the subprocess in the linked list. | |
437 | */ | |
438 | expr = Qnil; | |
439 | for (ptr = process_list; ptr; ptr = ptr->next) | |
440 | if (ptr->process_id == input_iosb.pid) | |
441 | { | |
442 | expr = Fcons (ptr->input_handler, | |
443 | Fcons (make_number (ptr->name), | |
444 | Fcons (make_string (msg, msglen), | |
445 | Qnil))); | |
446 | break; | |
447 | } | |
448 | have_process_input = 0; | |
449 | start_mbx_input (); | |
450 | clear_waiting_for_input (); /* Otherwise Ctl-g will cause crash. JCB */ | |
d427b66a | 451 | if (! NILP (expr)) |
7942b8ae RS |
452 | Feval (expr); |
453 | } | |
454 | ||
455 | /* Searches process list for any processes which have exited. Calls their | |
456 | * exit handlers and removes them from the process list. | |
457 | */ | |
458 | ||
459 | process_exit () | |
460 | { | |
461 | struct process_list * ptr, * prev, * next; | |
462 | ||
463 | process_exited = 0; | |
464 | prev = 0; | |
465 | ptr = process_list; | |
466 | while (ptr) | |
467 | { | |
468 | next = ptr->next; | |
469 | if (! ptr->process_active) | |
470 | { | |
471 | if (prev) | |
472 | prev->next = next; | |
473 | else | |
474 | process_list = next; | |
d427b66a | 475 | if (! NILP (ptr->exit_handler)) |
7942b8ae RS |
476 | Feval (Fcons (ptr->exit_handler, Fcons (make_number (ptr->name), |
477 | Qnil))); | |
478 | sys$dassgn (ptr->mbx_chan); | |
479 | free (ptr); | |
480 | } | |
481 | else | |
482 | prev = ptr; | |
483 | ptr = next; | |
484 | } | |
485 | } | |
486 | ||
487 | /* Called at emacs exit. | |
488 | */ | |
489 | ||
490 | kill_vms_processes () | |
491 | { | |
492 | struct process_list * ptr; | |
493 | ||
494 | for (ptr = process_list; ptr; ptr = ptr->next) | |
495 | if (ptr->process_active) | |
496 | { | |
497 | sys$dassgn (ptr->mbx_chan); | |
498 | sys$delprc (&ptr->process_id, 0); | |
499 | } | |
500 | sys$dassgn (input_mbx_chan); | |
501 | process_list = 0; | |
502 | input_mbx_chan = 0; | |
503 | } | |
504 | ||
505 | /* Creates a temporary mailbox and retrieves its device name in 'buf'. | |
506 | * Makes the descriptor pointed to by 'dsc' refer to this device. | |
507 | * 'buffer_factor' is used to allow sending messages asynchronously | |
508 | * till some point. | |
509 | */ | |
510 | ||
511 | static int | |
512 | create_mbx (dsc, buf, chan, buffer_factor) | |
513 | struct dsc$descriptor_s *dsc; | |
514 | char *buf; | |
515 | int *chan; | |
516 | int buffer_factor; | |
517 | { | |
518 | int strval[2]; | |
519 | int status; | |
520 | ||
521 | status = sys$crembx (0, chan, MSGSIZE, MSGSIZE * buffer_factor, 0, 0, 0); | |
522 | if (! (status & 1)) | |
523 | { | |
524 | message ("Unable to create mailbox. Need TMPMBX privilege."); | |
525 | return 0; | |
526 | } | |
527 | strval[0] = 16; | |
528 | strval[1] = buf; | |
529 | status = lib$getdvi (&DVI$_DEVNAM, chan, 0, 0, strval, | |
530 | &dsc->dsc$w_length); | |
531 | if (! (status & 1)) | |
532 | return 0; | |
533 | dsc->dsc$b_dtype = DSC$K_DTYPE_T; | |
534 | dsc->dsc$b_class = DSC$K_CLASS_S; | |
535 | dsc->dsc$a_pointer = buf; | |
536 | return 1; | |
537 | } /* create_mbx */ | |
538 | ||
539 | /* AST routine to be called upon receiving mailbox input. | |
540 | * Sets flag telling keyboard routines that input is available. | |
541 | */ | |
542 | ||
543 | static int | |
544 | mbx_input_ast () | |
545 | { | |
546 | have_process_input = 1; | |
547 | } | |
548 | ||
549 | /* Issue a QIO request on the input mailbox. | |
550 | */ | |
551 | static void | |
552 | start_mbx_input () | |
553 | { | |
554 | sys$qio (process_ef, input_mbx_chan, IO$_READVBLK, &input_iosb, | |
555 | mbx_input_ast, 0, mbx_buffer, sizeof (mbx_buffer), | |
556 | 0, 0, 0, 0); | |
557 | } | |
558 | ||
559 | /* Send a message to the subprocess input mailbox, without blocking if | |
560 | * possible. | |
561 | */ | |
562 | static void | |
563 | write_to_mbx (ptr, buf, len) | |
564 | struct process_list *ptr; | |
565 | char *buf; | |
566 | int len; | |
567 | { | |
568 | sys$qiow (0, ptr->mbx_chan, IO$_WRITEVBLK | IO$M_NOW, &ptr->iosb, | |
569 | 0, 0, buf, len, 0, 0, 0, 0); | |
570 | } | |
571 | ||
572 | DEFUN ("setprv", Fsetprv, Ssetprv, 1, 3, 0, | |
573 | "Set or reset a VMS privilege. First arg is privilege name.\n\ | |
574 | Second arg is t or nil, indicating whether the privilege is to be\n\ | |
575 | set or reset. Default is nil. Returns t if success, nil if not.\n\ | |
576 | If third arg is non-nil, does not change privilege, but returns t\n\ | |
577 | or nil depending upon whether the privilege is already enabled.") | |
578 | (priv, value, getprv) | |
579 | Lisp_Object priv, value, getprv; | |
580 | { | |
581 | int prvmask[2], prvlen, newmask[2]; | |
582 | char * prvname; | |
583 | int found, i; | |
584 | struct privilege_list * ptr; | |
585 | ||
586 | CHECK_STRING (priv, 0); | |
587 | priv = Fupcase (priv); | |
588 | prvname = XSTRING (priv)->data; | |
589 | prvlen = XSTRING (priv)->size; | |
590 | found = 0; | |
591 | prvmask[0] = 0; | |
592 | prvmask[1] = 0; | |
593 | for (i = 0; i < sizeof (priv_list) / sizeof (priv_list[0]); i++) | |
594 | { | |
595 | ptr = &priv_list[i]; | |
596 | if (prvlen == strlen (ptr->name) && | |
597 | bcmp (prvname, ptr->name, prvlen) == 0) | |
598 | { | |
599 | if (ptr->mask >= 32) | |
600 | prvmask[1] = 1 << (ptr->mask % 32); | |
601 | else | |
602 | prvmask[0] = 1 << ptr->mask; | |
603 | found = 1; | |
604 | break; | |
605 | } | |
606 | } | |
607 | if (! found) | |
608 | error ("Unknown privilege name %s", XSTRING (priv)->data); | |
d427b66a | 609 | if (NILP (getprv)) |
7942b8ae | 610 | { |
d427b66a | 611 | if (sys$setprv (NILP (value) ? 0 : 1, prvmask, 0, 0) == SS$_NORMAL) |
7942b8ae RS |
612 | return Qt; |
613 | return Qnil; | |
614 | } | |
615 | /* Get old priv value */ | |
616 | if (sys$setprv (0, 0, 0, newmask) != SS$_NORMAL) | |
617 | return Qnil; | |
618 | if ((newmask[0] & prvmask[0]) | |
619 | || (newmask[1] & prvmask[1])) | |
620 | return Qt; | |
621 | return Qnil; | |
622 | } | |
623 | \f | |
624 | /* Retrieves VMS system information. */ | |
625 | ||
626 | #ifdef VMS4_4 /* I don't know whether these functions work in old versions */ | |
627 | ||
628 | DEFUN ("vms-system-info", Fvms_system_info, Svms_system_info, 1, 3, 0, | |
629 | "Retrieve VMS process and system information.\n\ | |
630 | The first argument (a string) specifies the type of information desired.\n\ | |
631 | The other arguments depend on the type you select.\n\ | |
632 | For information about a process, the second argument is a process ID\n\ | |
633 | or a process name, with the current process as a default.\n\ | |
634 | These are the possibilities for the first arg (upper or lower case ok):\n\ | |
635 | account Returns account name\n\ | |
636 | cliname Returns CLI name\n\ | |
637 | owner Returns owner process's PID\n\ | |
638 | grp Returns group number\n\ | |
639 | parent Returns parent process's PID\n\ | |
640 | pid Returns process's PID\n\ | |
641 | prcnam Returns process's name\n\ | |
642 | terminal Returns terminal name\n\ | |
643 | uic Returns UIC number\n\ | |
644 | uicgrp Returns formatted [UIC,GRP]\n\ | |
645 | username Returns username\n\ | |
646 | version Returns VMS version\n\ | |
647 | logical Translates VMS logical name (second argument)\n\ | |
648 | dcl-symbol Translates DCL symbol (second argument)\n\ | |
649 | proclist Returns list of all PIDs on system (needs WORLD privilege)." ) | |
650 | (type, arg1, arg2) | |
651 | Lisp_Object type, arg1, arg2; | |
652 | { | |
653 | int i, typelen; | |
654 | char * typename; | |
655 | struct vms_objlist * ptr; | |
656 | ||
657 | CHECK_STRING (type, 0); | |
658 | type = Fupcase (type); | |
659 | typename = XSTRING (type)->data; | |
660 | typelen = XSTRING (type)->size; | |
661 | for (i = 0; i < sizeof (vms_object) / sizeof (vms_object[0]); i++) | |
662 | { | |
663 | ptr = &vms_object[i]; | |
664 | if (typelen == strlen (ptr->name) | |
665 | && bcmp (typename, ptr->name, typelen) == 0) | |
666 | return (* ptr->objfn)(arg1, arg2); | |
667 | } | |
668 | error ("Unknown object type %s", typename); | |
669 | } | |
670 | \f | |
671 | /* Given a reference to a VMS process, returns its process id. */ | |
672 | ||
673 | static int | |
674 | translate_id (pid, owner) | |
675 | Lisp_Object pid; | |
676 | int owner; /* if pid is null/0, return owner. If this | |
677 | * flag is 0, return self. */ | |
678 | { | |
679 | int status, code, id, i, numeric, size; | |
680 | char * p; | |
681 | int prcnam[2]; | |
682 | ||
d427b66a | 683 | if (NILP (pid) |
f2d800a4 KH |
684 | || STRINGP (pid) && XSTRING (pid)->size == 0 |
685 | || INTEGERP (pid) && XFASTINT (pid) == 0) | |
7942b8ae RS |
686 | { |
687 | code = owner ? JPI$_OWNER : JPI$_PID; | |
688 | status = lib$getjpi (&code, 0, 0, &id); | |
689 | if (! (status & 1)) | |
690 | error ("Cannot find %s: %s", | |
691 | owner ? "owner process" : "process id", | |
692 | vmserrstr (status)); | |
693 | return (id); | |
694 | } | |
f2d800a4 | 695 | if (INTEGERP (pid)) |
7942b8ae RS |
696 | return (XFASTINT (pid)); |
697 | CHECK_STRING (pid, 0); | |
698 | pid = Fupcase (pid); | |
699 | size = XSTRING (pid)->size; | |
700 | p = XSTRING (pid)->data; | |
701 | numeric = 1; | |
702 | id = 0; | |
703 | for (i = 0; i < size; i++, p++) | |
704 | if (isxdigit (*p)) | |
705 | { | |
706 | id *= 16; | |
707 | if (*p >= '0' && *p <= '9') | |
708 | id += *p - '0'; | |
709 | else | |
710 | id += *p - 'A' + 10; | |
711 | } | |
712 | else | |
713 | { | |
714 | numeric = 0; | |
715 | break; | |
716 | } | |
717 | if (numeric) | |
718 | return (id); | |
719 | prcnam[0] = XSTRING (pid)->size; | |
720 | prcnam[1] = XSTRING (pid)->data; | |
721 | status = lib$getjpi (&JPI$_PID, 0, prcnam, &id); | |
722 | if (! (status & 1)) | |
723 | error ("Cannot find process id: %s", | |
724 | vmserrstr (status)); | |
725 | return (id); | |
726 | } /* translate_id */ | |
727 | \f | |
728 | /* VMS object retrieval functions. */ | |
729 | ||
730 | static Lisp_Object | |
731 | getjpi (jpicode, arg, numeric) | |
732 | int jpicode; /* Type of GETJPI information */ | |
733 | Lisp_Object arg; | |
734 | int numeric; /* 1 if numeric value expected */ | |
735 | { | |
736 | int id, status, numval; | |
737 | char str[128]; | |
738 | int strdsc[2] = { sizeof (str), str }; | |
739 | short strlen; | |
740 | ||
741 | id = translate_id (arg, 0); | |
742 | status = lib$getjpi (&jpicode, &id, 0, &numval, strdsc, &strlen); | |
743 | if (! (status & 1)) | |
744 | error ("Unable to retrieve information: %s", | |
745 | vmserrstr (status)); | |
746 | if (numeric) | |
747 | return (make_number (numval)); | |
748 | return (make_string (str, strlen)); | |
749 | } | |
750 | ||
751 | static Lisp_Object | |
752 | vms_account (arg1, arg2) | |
753 | Lisp_Object arg1, arg2; | |
754 | { | |
755 | return getjpi (JPI$_ACCOUNT, arg1, 0); | |
756 | } | |
757 | ||
758 | static Lisp_Object | |
759 | vms_cliname (arg1, arg2) | |
760 | Lisp_Object arg1, arg2; | |
761 | { | |
762 | return getjpi (JPI$_CLINAME, arg1, 0); | |
763 | } | |
764 | ||
765 | static Lisp_Object | |
766 | vms_grp (arg1, arg2) | |
767 | Lisp_Object arg1, arg2; | |
768 | { | |
769 | return getjpi (JPI$_GRP, arg1, 1); | |
770 | } | |
771 | ||
772 | static Lisp_Object | |
773 | vms_image (arg1, arg2) | |
774 | Lisp_Object arg1, arg2; | |
775 | { | |
776 | return getjpi (JPI$_IMAGNAME, arg1, 0); | |
777 | } | |
778 | ||
779 | static Lisp_Object | |
780 | vms_owner (arg1, arg2) | |
781 | Lisp_Object arg1, arg2; | |
782 | { | |
783 | return getjpi (JPI$_OWNER, arg1, 1); | |
784 | } | |
785 | ||
786 | static Lisp_Object | |
787 | vms_parent (arg1, arg2) | |
788 | Lisp_Object arg1, arg2; | |
789 | { | |
790 | return getjpi (JPI$_MASTER_PID, arg1, 1); | |
791 | } | |
792 | ||
793 | static Lisp_Object | |
794 | vms_pid (arg1, arg2) | |
795 | Lisp_Object arg1, arg2; | |
796 | { | |
797 | return getjpi (JPI$_PID, arg1, 1); | |
798 | } | |
799 | ||
800 | static Lisp_Object | |
801 | vms_prcnam (arg1, arg2) | |
802 | Lisp_Object arg1, arg2; | |
803 | { | |
804 | return getjpi (JPI$_PRCNAM, arg1, 0); | |
805 | } | |
806 | ||
807 | static Lisp_Object | |
808 | vms_terminal (arg1, arg2) | |
809 | Lisp_Object arg1, arg2; | |
810 | { | |
811 | return getjpi (JPI$_TERMINAL, arg1, 0); | |
812 | } | |
813 | ||
814 | static Lisp_Object | |
815 | vms_uic_int (arg1, arg2) | |
816 | Lisp_Object arg1, arg2; | |
817 | { | |
818 | return getjpi (JPI$_UIC, arg1, 1); | |
819 | } | |
820 | ||
821 | static Lisp_Object | |
822 | vms_uic_str (arg1, arg2) | |
823 | Lisp_Object arg1, arg2; | |
824 | { | |
825 | return getjpi (JPI$_UIC, arg1, 0); | |
826 | } | |
827 | ||
828 | static Lisp_Object | |
829 | vms_username (arg1, arg2) | |
830 | Lisp_Object arg1, arg2; | |
831 | { | |
832 | return getjpi (JPI$_USERNAME, arg1, 0); | |
833 | } | |
834 | ||
835 | static Lisp_Object | |
836 | vms_version_fn (arg1, arg2) | |
837 | Lisp_Object arg1, arg2; | |
838 | { | |
839 | char str[40]; | |
840 | int status; | |
841 | int strdsc[2] = { sizeof (str), str }; | |
842 | short strlen; | |
843 | ||
844 | status = lib$getsyi (&SYI$_VERSION, 0, strdsc, &strlen, 0, 0); | |
845 | if (! (status & 1)) | |
846 | error ("Unable to obtain version: %s", vmserrstr (status)); | |
847 | return (make_string (str, strlen)); | |
848 | } | |
849 | ||
850 | static Lisp_Object | |
851 | vms_trnlog (arg1, arg2) | |
852 | Lisp_Object arg1, arg2; | |
853 | { | |
5ca4927a | 854 | char str[256]; /* Max logical translation is 255 bytes. */ |
7942b8ae RS |
855 | int status, symdsc[2]; |
856 | int strdsc[2] = { sizeof (str), str }; | |
857 | short length, level; | |
858 | ||
859 | CHECK_STRING (arg1, 0); | |
860 | symdsc[0] = XSTRING (arg1)->size; | |
861 | symdsc[1] = XSTRING (arg1)->data; | |
862 | status = lib$sys_trnlog (symdsc, &length, strdsc); | |
863 | if (! (status & 1)) | |
864 | error ("Unable to translate logical name: %s", vmserrstr (status)); | |
865 | if (status == SS$_NOTRAN) | |
866 | return (Qnil); | |
867 | return (make_string (str, length)); | |
868 | } | |
869 | ||
870 | static Lisp_Object | |
871 | vms_symbol (arg1, arg2) | |
872 | Lisp_Object arg1, arg2; | |
873 | { | |
5ca4927a | 874 | char str[1025]; /* Max symbol translation is 1024 bytes. */ |
7942b8ae RS |
875 | int status, symdsc[2]; |
876 | int strdsc[2] = { sizeof (str), str }; | |
877 | short length, level; | |
878 | ||
879 | CHECK_STRING (arg1, 0); | |
880 | symdsc[0] = XSTRING (arg1)->size; | |
881 | symdsc[1] = XSTRING (arg1)->data; | |
882 | status = lib$get_symbol (symdsc, strdsc, &length, &level); | |
883 | if (! (status & 1)) { | |
884 | if (status == LIB$_NOSUCHSYM) | |
885 | return (Qnil); | |
886 | else | |
887 | error ("Unable to translate symbol: %s", vmserrstr (status)); | |
888 | } | |
889 | return (make_string (str, length)); | |
890 | } | |
891 | ||
892 | static Lisp_Object | |
893 | vms_proclist (arg1, arg2) | |
894 | Lisp_Object arg1, arg2; | |
895 | { | |
896 | Lisp_Object retval; | |
897 | int id, status, pid; | |
898 | ||
899 | retval = Qnil; | |
900 | pid = -1; | |
901 | for (;;) | |
902 | { | |
903 | status = lib$getjpi (&JPI$_PID, &pid, 0, &id); | |
904 | if (status == SS$_NOMOREPROC) | |
905 | break; | |
906 | if (! (status & 1)) | |
907 | error ("Unable to get process ID: %s", vmserrstr (status)); | |
908 | retval = Fcons (make_number (id), retval); | |
909 | } | |
910 | return (Fsort (retval, intern ("<"))); | |
911 | } | |
912 | \f | |
913 | DEFUN ("shrink-to-icon", Fshrink_to_icon, Sshrink_to_icon, 0, 0, 0, | |
914 | "If emacs is running in a workstation window, shrink to an icon.") | |
915 | () | |
916 | { | |
917 | static char result[128]; | |
918 | static $DESCRIPTOR (result_descriptor, result); | |
919 | static $DESCRIPTOR (tt_name, "TT:"); | |
920 | static int chan = 0; | |
921 | static int buf = 0x9d + ('2'<<8) + ('2'<<16) + (0x9c<<24); | |
922 | int status; | |
923 | static int temp = JPI$_TERMINAL; | |
924 | ||
925 | status = lib$getjpi (&temp, 0, 0, 0, &result_descriptor, 0); | |
926 | if (status != SS$_NORMAL) | |
927 | error ("Unable to determine terminal type."); | |
928 | if (result[0] != 'W' || result[1] != 'T') /* see if workstation */ | |
929 | error ("Can't shrink-to-icon on a non workstation terminal"); | |
930 | if (!chan) /* assign channel if not assigned */ | |
931 | if ((status = sys$assign (&tt_name, &chan, 0, 0)) != SS$_NORMAL) | |
932 | error ("Can't assign terminal, %d", status); | |
933 | status = sys$qiow (0, chan, IO$_WRITEVBLK+IO$M_BREAKTHRU, 0, 0, 0, | |
934 | &buf, 4, 0, 0, 0, 0); | |
935 | if (status != SS$_NORMAL) | |
936 | error ("Can't shrink-to-icon, %d", status); | |
937 | } | |
938 | ||
939 | #endif /* VMS4_4 */ | |
940 | \f | |
941 | init_vmsfns () | |
942 | { | |
943 | process_list = 0; | |
944 | input_mbx_chan = 0; | |
945 | } | |
946 | ||
947 | syms_of_vmsfns () | |
948 | { | |
949 | defsubr (&Sdefault_subproc_input_handler); | |
950 | defsubr (&Sspawn_subprocess); | |
951 | defsubr (&Ssend_command_to_subprocess); | |
952 | defsubr (&Sstop_subprocess); | |
953 | defsubr (&Ssetprv); | |
954 | #ifdef VMS4_4 | |
955 | defsubr (&Svms_system_info); | |
956 | defsubr (&Sshrink_to_icon); | |
957 | #endif /* VMS4_4 */ | |
958 | Qdefault_subproc_input_handler = intern ("default-subprocess-input-handler"); | |
959 | staticpro (&Qdefault_subproc_input_handler); | |
960 | } | |
961 | #endif /* VMS */ | |
962 |