source: mainline/kernel/generic/src/console/kconsole.c@ f35749e

Last change on this file since f35749e was fdfb24e, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 22 months ago

Deduplicate string related functions
  • Property mode set to 100644
File size: 19.1 KB
Line 
1/*
2 * Copyright (c) 2005 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup kernel_generic_console
30 * @{
31 */
32
33/**
34 * @file kconsole.c
35 * @brief Kernel console.
36 *
37 * This file contains kernel thread managing the kernel console.
38 *
39 */
40
41#include <assert.h>
42#include <console/kconsole.h>
43#include <console/console.h>
44#include <console/chardev.h>
45#include <console/cmd.h>
46#include <console/prompt.h>
47#include <stdio.h>
48#include <panic.h>
49#include <typedefs.h>
50#include <adt/list.h>
51#include <arch.h>
52#include <macros.h>
53#include <debug.h>
54#include <halt.h>
55#include <str.h>
56#include <sysinfo/sysinfo.h>
57#include <symtab.h>
58#include <errno.h>
59#include <putchar.h>
60#include <stdlib.h>
61
62/** Simple kernel console.
63 *
64 * The console is realized by kernel thread kconsole.
65 * It doesn't understand any useful command on its own,
66 * but makes it possible for other kernel subsystems to
67 * register their own commands.
68 */
69
70/** Locking.
71 *
72 * There is a list of cmd_info_t structures. This list
73 * is protected by cmd_lock spinlock. Note that specially
74 * the link elements of cmd_info_t are protected by
75 * this lock.
76 *
77 * Each cmd_info_t also has its own lock, which protects
78 * all elements thereof except the link element.
79 *
80 * cmd_lock must be acquired before any cmd_info lock.
81 * When locking two cmd info structures, structure with
82 * lower address must be locked first.
83 */
84
85SPINLOCK_INITIALIZE(cmd_lock); /**< Lock protecting command list. */
86LIST_INITIALIZE(cmd_list); /**< Command list. */
87
88#define MAX_SYMBOL_NAME 64
89
90static char32_t history[KCONSOLE_HISTORY][MAX_CMDLINE] = { };
91static size_t history_pos = 0;
92
93/** Initialize kconsole data structures
94 *
95 * This is the most basic initialization, almost no
96 * other kernel subsystem is ready yet.
97 *
98 */
99void kconsole_init(void)
100{
101 unsigned int i;
102
103 cmd_init();
104 for (i = 0; i < KCONSOLE_HISTORY; i++)
105 history[i][0] = 0;
106}
107
108/** Register kconsole command.
109 *
110 * @param cmd Structure describing the command.
111 *
112 * @return False on failure, true on success.
113 *
114 */
115bool cmd_register(cmd_info_t *cmd)
116{
117 spinlock_lock(&cmd_lock);
118
119 /*
120 * Make sure the command is not already listed.
121 */
122 list_foreach(cmd_list, link, cmd_info_t, hlp) {
123 if (hlp == cmd) {
124 /* The command is already there. */
125 spinlock_unlock(&cmd_lock);
126 return false;
127 }
128
129 /* Avoid deadlock. */
130 if (hlp < cmd) {
131 spinlock_lock(&hlp->lock);
132 spinlock_lock(&cmd->lock);
133 } else {
134 spinlock_lock(&cmd->lock);
135 spinlock_lock(&hlp->lock);
136 }
137
138 if (str_cmp(hlp->name, cmd->name) == 0) {
139 /* The command is already there. */
140 spinlock_unlock(&hlp->lock);
141 spinlock_unlock(&cmd->lock);
142 spinlock_unlock(&cmd_lock);
143 return false;
144 }
145
146 spinlock_unlock(&hlp->lock);
147 spinlock_unlock(&cmd->lock);
148 }
149
150 /*
151 * Now the command can be added.
152 */
153 list_append(&cmd->link, &cmd_list);
154
155 spinlock_unlock(&cmd_lock);
156 return true;
157}
158
159/** Print count times a character */
160_NO_TRACE static void print_cc(char32_t ch, size_t count)
161{
162 size_t i;
163 for (i = 0; i < count; i++)
164 putuchar(ch);
165}
166
167/** Try to find a command beginning with prefix */
168const char *cmdtab_enum(const char *name, const char **h, void **ctx)
169{
170 link_t **startpos = (link_t **) ctx;
171 size_t namelen = str_length(name);
172
173 spinlock_lock(&cmd_lock);
174
175 if (*startpos == NULL)
176 *startpos = list_first(&cmd_list);
177
178 for (; *startpos != NULL; *startpos = list_next(*startpos, &cmd_list)) {
179 cmd_info_t *hlp = list_get_instance(*startpos, cmd_info_t, link);
180
181 const char *curname = hlp->name;
182 if (str_length(curname) < namelen)
183 continue;
184
185 if (str_lcmp(curname, name, namelen) == 0) {
186 *startpos = list_next(*startpos, &cmd_list);
187 if (h)
188 *h = hlp->description;
189
190 spinlock_unlock(&cmd_lock);
191 return (curname + str_lsize(curname, namelen));
192 }
193 }
194
195 spinlock_unlock(&cmd_lock);
196 return NULL;
197}
198
199/** Command completion of the commands
200 *
201 * @param name String to match, changed to hint on exit
202 * @param size Input buffer size
203 *
204 * @return Number of found matches
205 *
206 */
207_NO_TRACE static int cmdtab_compl(char *input, size_t size, indev_t *indev,
208 hints_enum_func_t hints_enum)
209{
210 const char *name = input;
211
212 size_t found = 0;
213
214 /*
215 * Maximum Match Length: Length of longest matching common
216 * substring in case more than one match is found.
217 */
218 size_t max_match_len = size;
219 size_t max_match_len_tmp = size;
220 void *pos = NULL;
221 const char *hint;
222 const char *help;
223 size_t hints_to_show = MAX_TAB_HINTS - 1;
224 size_t total_hints_shown = 0;
225 bool continue_showing_hints = true;
226
227 char *output = malloc(MAX_CMDLINE);
228 if (!output) {
229 // TODO: fix the function so that it does not need allocation
230 printf("Can't complete command, out of memory.\n");
231 return 0;
232 }
233
234 output[0] = 0;
235
236 while ((hint = hints_enum(name, NULL, &pos))) {
237 if ((found == 0) || (str_length(hint) > str_length(output)))
238 str_cpy(output, MAX_CMDLINE, hint);
239
240 found++;
241 }
242
243 /*
244 * If the number of possible completions is more than MAX_TAB_HINTS,
245 * ask the user whether to display them or not.
246 */
247 if (found > MAX_TAB_HINTS) {
248 printf("\n");
249 continue_showing_hints =
250 console_prompt_display_all_hints(indev, found);
251 }
252
253 if ((found > 1) && (str_length(output) != 0)) {
254 printf("\n");
255 pos = NULL;
256 while ((hint = hints_enum(name, &help, &pos))) {
257
258 if (continue_showing_hints) {
259 if (help)
260 printf("%s%s (%s)\n", name, hint, help);
261 else
262 printf("%s%s\n", name, hint);
263
264 --hints_to_show;
265 ++total_hints_shown;
266
267 if ((hints_to_show == 0) && (total_hints_shown != found)) {
268 /* Ask user to continue */
269 continue_showing_hints =
270 console_prompt_more_hints(indev, &hints_to_show);
271 }
272 }
273
274 max_match_len_tmp = 0;
275 while ((output[max_match_len_tmp] ==
276 hint[max_match_len_tmp]) &&
277 (max_match_len_tmp < max_match_len))
278 ++max_match_len_tmp;
279
280 max_match_len = max_match_len_tmp;
281 }
282
283 /* Keep only the characters common in all completions */
284 output[max_match_len] = 0;
285 }
286
287 if (found > 0)
288 str_cpy(input, size, output);
289
290 free(output);
291 return found;
292}
293
294_NO_TRACE static cmd_info_t *parse_cmd(const char32_t *cmdline)
295{
296 size_t start = 0;
297 size_t end;
298 char *tmp;
299
300 while (isspace(cmdline[start]))
301 start++;
302
303 end = start + 1;
304
305 while (!isspace(cmdline[end]))
306 end++;
307
308 tmp = malloc(STR_BOUNDS(end - start + 1));
309 if (!tmp)
310 return NULL;
311
312 wstr_to_str(tmp, end - start + 1, &cmdline[start]);
313
314 spinlock_lock(&cmd_lock);
315
316 list_foreach(cmd_list, link, cmd_info_t, hlp) {
317 spinlock_lock(&hlp->lock);
318
319 if (str_cmp(hlp->name, tmp) == 0) {
320 spinlock_unlock(&hlp->lock);
321 spinlock_unlock(&cmd_lock);
322 free(tmp);
323 return hlp;
324 }
325
326 spinlock_unlock(&hlp->lock);
327 }
328
329 free(tmp);
330 spinlock_unlock(&cmd_lock);
331
332 return NULL;
333}
334
335_NO_TRACE static char32_t *clever_readline(const char *prompt, indev_t *indev,
336 char *tmp)
337{
338 printf("%s> ", prompt);
339
340 size_t position = 0;
341 char32_t *current = history[history_pos];
342 current[0] = 0;
343
344 while (true) {
345 char32_t ch = indev_pop_character(indev);
346
347 if (ch == '\n') {
348 /* Enter */
349 putuchar(ch);
350 break;
351 }
352
353 if (ch == '\b') {
354 /* Backspace */
355 if (position == 0)
356 continue;
357
358 if (wstr_remove(current, position - 1)) {
359 position--;
360 putuchar('\b');
361 printf("%ls ", current + position);
362 print_cc('\b', wstr_length(current) - position + 1);
363 continue;
364 }
365 }
366
367 if (ch == '\t') {
368 /* Tab completion */
369
370 /* Move to the end of the word */
371 for (; (current[position] != 0) && (!isspace(current[position]));
372 position++)
373 putuchar(current[position]);
374
375 /*
376 * Find the beginning of the word
377 * and copy it to tmp
378 */
379 size_t beg;
380 unsigned narg = 0;
381 if (position == 0) {
382 tmp[0] = '\0';
383 beg = 0;
384 } else {
385 beg = position - 1;
386 while ((beg > 0) && (!isspace(current[beg])))
387 beg--;
388
389 if (isspace(current[beg]))
390 beg++;
391
392 wstr_to_str(tmp, position - beg + 1, current + beg);
393 }
394
395 /* Count which argument number are we tabbing (narg=0 is cmd) */
396 bool sp = false;
397 for (; beg > 0; beg--) {
398 if (isspace(current[beg])) {
399 if (!sp) {
400 narg++;
401 sp = true;
402 }
403 } else
404 sp = false;
405 }
406
407 if (narg && isspace(current[0]))
408 narg--;
409
410 int found;
411 if (narg == 0) {
412 /* Command completion */
413 found = cmdtab_compl(tmp, STR_BOUNDS(MAX_CMDLINE), indev,
414 cmdtab_enum);
415 } else {
416 /* Arguments completion */
417 cmd_info_t *cmd = parse_cmd(current);
418 if (!cmd || !cmd->hints_enum || cmd->argc < narg)
419 continue;
420 found = cmdtab_compl(tmp, STR_BOUNDS(MAX_CMDLINE), indev,
421 cmd->hints_enum);
422 }
423
424 if (found == 0)
425 continue;
426
427 /*
428 * We have hints, possibly many. In case of more than one hint,
429 * tmp will contain the common prefix.
430 */
431 size_t off = 0;
432 size_t i = 0;
433 while ((ch = str_decode(tmp, &off, STR_NO_LIMIT)) != 0) {
434 if (!wstr_linsert(current, ch, position + i, MAX_CMDLINE))
435 break;
436
437 i++;
438 }
439
440 if (found > 1) {
441 /* No unique hint, list was printed */
442 printf("%s> ", prompt);
443 printf("%ls", current);
444 position += str_length(tmp);
445 print_cc('\b', wstr_length(current) - position);
446 continue;
447 }
448
449 /* We have a hint */
450
451 printf("%ls", current + position);
452 position += str_length(tmp);
453 print_cc('\b', wstr_length(current) - position);
454
455 if (position == wstr_length(current)) {
456 /* Insert a space after the last completed argument */
457 if (wstr_linsert(current, ' ', position, MAX_CMDLINE)) {
458 printf("%ls", current + position);
459 position++;
460 }
461 }
462 continue;
463 }
464
465 if (ch == U_LEFT_ARROW) {
466 /* Left */
467 if (position > 0) {
468 putuchar('\b');
469 position--;
470 }
471 continue;
472 }
473
474 if (ch == U_RIGHT_ARROW) {
475 /* Right */
476 if (position < wstr_length(current)) {
477 putuchar(current[position]);
478 position++;
479 }
480 continue;
481 }
482
483 if ((ch == U_UP_ARROW) || (ch == U_DOWN_ARROW)) {
484 /* Up, down */
485 print_cc('\b', position);
486 print_cc(' ', wstr_length(current));
487 print_cc('\b', wstr_length(current));
488
489 if (ch == U_UP_ARROW) {
490 /* Up */
491 if (history_pos == 0)
492 history_pos = KCONSOLE_HISTORY - 1;
493 else
494 history_pos--;
495 } else {
496 /* Down */
497 history_pos++;
498 history_pos = history_pos % KCONSOLE_HISTORY;
499 }
500 current = history[history_pos];
501 printf("%ls", current);
502 position = wstr_length(current);
503 continue;
504 }
505
506 if (ch == U_HOME_ARROW) {
507 /* Home */
508 print_cc('\b', position);
509 position = 0;
510 continue;
511 }
512
513 if (ch == U_END_ARROW) {
514 /* End */
515 printf("%ls", current + position);
516 position = wstr_length(current);
517 continue;
518 }
519
520 if (ch == U_DELETE) {
521 /* Delete */
522 if (position == wstr_length(current))
523 continue;
524
525 if (wstr_remove(current, position)) {
526 printf("%ls ", current + position);
527 print_cc('\b', wstr_length(current) - position + 1);
528 }
529 continue;
530 }
531
532 if (wstr_linsert(current, ch, position, MAX_CMDLINE)) {
533 printf("%ls", current + position);
534 position++;
535 print_cc('\b', wstr_length(current) - position);
536 }
537 }
538
539 if (wstr_length(current) > 0) {
540 history_pos++;
541 history_pos = history_pos % KCONSOLE_HISTORY;
542 }
543
544 return current;
545}
546
547bool kconsole_check_poll(void)
548{
549 return check_poll(stdin);
550}
551
552_NO_TRACE static bool parse_int_arg(const char *text, size_t len,
553 sysarg_t *result)
554{
555 bool isaddr = false;
556 bool isptr = false;
557
558 /* If we get a name, try to find it in symbol table */
559 if (text[0] == '&') {
560 isaddr = true;
561 text++;
562 len--;
563 } else if (text[0] == '*') {
564 isptr = true;
565 text++;
566 len--;
567 }
568
569 if ((text[0] < '0') || (text[0] > '9')) {
570 char symname[MAX_SYMBOL_NAME];
571 str_ncpy(symname, MAX_SYMBOL_NAME, text, len + 1);
572
573 uintptr_t symaddr;
574 errno_t rc = symtab_addr_lookup(symname, &symaddr);
575 switch (rc) {
576 case ENOENT:
577 printf("Symbol %s not found.\n", symname);
578 return false;
579 case EOVERFLOW:
580 printf("Duplicate symbol %s.\n", symname);
581 symtab_print_search(symname);
582 return false;
583 case ENOTSUP:
584 printf("No symbol information available.\n");
585 return false;
586 case EOK:
587 if (isaddr)
588 *result = (sysarg_t) symaddr;
589 else if (isptr)
590 *result = **((sysarg_t **) symaddr);
591 else
592 *result = *((sysarg_t *) symaddr);
593 break;
594 default:
595 printf("Unknown error.\n");
596 return false;
597 }
598 } else {
599 /* It's a number - convert it */
600 uint64_t value;
601 const char *end;
602 errno_t rc = str_uint64_t(text, &end, 0, false, &value);
603 if (end != text + len)
604 rc = EINVAL;
605 switch (rc) {
606 case EINVAL:
607 printf("Invalid number '%s'.\n", text);
608 return false;
609 case EOVERFLOW:
610 printf("Integer overflow in '%s'.\n", text);
611 return false;
612 case EOK:
613 *result = (sysarg_t) value;
614 if (isptr)
615 *result = *((sysarg_t *) *result);
616 break;
617 default:
618 printf("Unknown error parsing '%s'.\n", text);
619 return false;
620 }
621 }
622
623 return true;
624}
625
626/** Parse argument.
627 *
628 * Find start and end positions of command line argument.
629 *
630 * @param cmdline Command line as read from the input device.
631 * @param size Size (in bytes) of the string.
632 * @param start On entry, 'start' contains pointer to the offset
633 * of the first unprocessed character of cmdline.
634 * On successful exit, it marks beginning of the next argument.
635 * @param end Undefined on entry. On exit, 'end' is the offset of the first
636 * character behind the next argument.
637 *
638 * @return False on failure, true on success.
639 *
640 */
641_NO_TRACE static bool parse_argument(const char *cmdline, size_t size,
642 size_t *start, size_t *end)
643{
644 assert(start != NULL);
645 assert(end != NULL);
646
647 bool found_start = false;
648 size_t offset = *start;
649 size_t prev = *start;
650 char32_t ch;
651
652 while ((ch = str_decode(cmdline, &offset, size)) != 0) {
653 if (!found_start) {
654 if (!isspace(ch)) {
655 *start = prev;
656 found_start = true;
657 }
658 } else {
659 if (isspace(ch))
660 break;
661 }
662
663 prev = offset;
664 }
665 *end = prev;
666
667 return found_start;
668}
669
670/** Parse command line.
671 *
672 * @param cmdline Command line as read from input device.
673 * @param size Size (in bytes) of the string.
674 *
675 * @return Structure describing the command.
676 *
677 */
678_NO_TRACE static cmd_info_t *parse_cmdline(const char *cmdline, size_t size)
679{
680 size_t start = 0;
681 size_t end = 0;
682 if (!parse_argument(cmdline, size, &start, &end)) {
683 /* Command line did not contain alphanumeric word. */
684 return NULL;
685 }
686 spinlock_lock(&cmd_lock);
687
688 cmd_info_t *cmd = NULL;
689
690 list_foreach(cmd_list, link, cmd_info_t, hlp) {
691 spinlock_lock(&hlp->lock);
692
693 if (str_lcmp(hlp->name, cmdline + start,
694 max(str_length(hlp->name),
695 str_nlength(cmdline + start, (size_t) (end - start)))) == 0) {
696 cmd = hlp;
697 break;
698 }
699
700 spinlock_unlock(&hlp->lock);
701 }
702
703 spinlock_unlock(&cmd_lock);
704
705 if (!cmd) {
706 /* Unknown command. */
707 printf("Unknown command.\n");
708 return NULL;
709 }
710
711 /* cmd == hlp is locked */
712
713 /*
714 * The command line must be further analyzed and
715 * the parameters therefrom must be matched and
716 * converted to those specified in the cmd info
717 * structure.
718 */
719
720 bool error = false;
721 size_t i;
722 for (i = 0; i < cmd->argc; i++) {
723 char *buf;
724
725 start = end;
726 if (!parse_argument(cmdline, size, &start, &end)) {
727 if (cmd->argv[i].type == ARG_TYPE_STRING_OPTIONAL) {
728 buf = (char *) cmd->argv[i].buffer;
729 str_cpy(buf, cmd->argv[i].len, "");
730 continue;
731 }
732
733 printf("Too few arguments.\n");
734 spinlock_unlock(&cmd->lock);
735 return NULL;
736 }
737
738 switch (cmd->argv[i].type) {
739 case ARG_TYPE_STRING:
740 case ARG_TYPE_STRING_OPTIONAL:
741 buf = (char *) cmd->argv[i].buffer;
742 str_ncpy(buf, cmd->argv[i].len, cmdline + start,
743 end - start);
744 break;
745 case ARG_TYPE_INT:
746 if (!parse_int_arg(cmdline + start, end - start,
747 &cmd->argv[i].intval))
748 error = true;
749 break;
750 case ARG_TYPE_VAR:
751 if ((start < end - 1) && (cmdline[start] == '"')) {
752 if (cmdline[end - 1] == '"') {
753 buf = (char *) cmd->argv[i].buffer;
754 str_ncpy(buf, cmd->argv[i].len,
755 cmdline + start + 1,
756 (end - start) - 1);
757 cmd->argv[i].intval = (sysarg_t) buf;
758 cmd->argv[i].vartype = ARG_TYPE_STRING;
759 } else {
760 printf("Wrong syntax.\n");
761 error = true;
762 }
763 } else if (parse_int_arg(cmdline + start,
764 end - start, &cmd->argv[i].intval)) {
765 cmd->argv[i].vartype = ARG_TYPE_INT;
766 } else {
767 printf("Unrecognized variable argument.\n");
768 error = true;
769 }
770 break;
771 case ARG_TYPE_INVALID:
772 default:
773 printf("Invalid argument type\n");
774 error = true;
775 break;
776 }
777 }
778
779 if (error) {
780 spinlock_unlock(&cmd->lock);
781 return NULL;
782 }
783
784 start = end;
785 if (parse_argument(cmdline, size, &start, &end)) {
786 printf("Too many arguments.\n");
787 spinlock_unlock(&cmd->lock);
788 return NULL;
789 }
790
791 spinlock_unlock(&cmd->lock);
792 return cmd;
793}
794
795/** Kernel console prompt.
796 *
797 * @param prompt Kernel console prompt (e.g kconsole/panic).
798 * @param msg Message to display in the beginning.
799 * @param kcon Wait for keypress to show the prompt
800 * and never exit.
801 *
802 */
803void kconsole(const char *prompt, const char *msg, bool kcon)
804{
805 if (!stdin) {
806 LOG("No stdin for kernel console");
807 return;
808 }
809
810 if (msg)
811 printf("%s", msg);
812
813 if (kcon)
814 indev_pop_character(stdin);
815 else
816 printf("Type \"exit\" to leave the console.\n");
817
818 char *buffer = malloc(STR_BOUNDS(MAX_CMDLINE));
819 char *cmdline = malloc(STR_BOUNDS(MAX_CMDLINE));
820 if (!buffer || !cmdline) {
821 // TODO: fix the function so that it does not need allocations
822 printf("Can't start console, out of memory.\n");
823 free(buffer);
824 free(cmdline);
825 return;
826 }
827
828 while (true) {
829 char32_t *tmp = clever_readline((char *) prompt, stdin, buffer);
830 size_t len = wstr_length(tmp);
831 if (!len)
832 continue;
833
834 wstr_to_str(cmdline, STR_BOUNDS(MAX_CMDLINE), tmp);
835
836 if ((!kcon) && (len == 4) && (str_lcmp(cmdline, "exit", 4) == 0))
837 break;
838
839 cmd_info_t *cmd_info = parse_cmdline(cmdline, STR_BOUNDS(MAX_CMDLINE));
840 if (!cmd_info)
841 continue;
842
843 (void) cmd_info->func(cmd_info->argv);
844 }
845 free(buffer);
846 free(cmdline);
847}
848
849/** Kernel console managing thread.
850 *
851 */
852void kconsole_thread(void *data)
853{
854 kconsole("kconsole", "Kernel console ready (press any key to activate)\n", true);
855}
856
857/** @}
858 */
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