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1 | /* |
1 | /* |
2 | * Copyright (c) 2005 Jakub Jermar |
2 | * Copyright (c) 2005 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup genericconsole |
29 | /** @addtogroup genericconsole |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** |
33 | /** |
34 | * @file kconsole.c |
34 | * @file kconsole.c |
35 | * @brief Kernel console. |
35 | * @brief Kernel console. |
36 | * |
36 | * |
37 | * This file contains kernel thread managing the kernel console. |
37 | * This file contains kernel thread managing the kernel console. |
38 | */ |
38 | */ |
39 | 39 | ||
40 | #include <console/kconsole.h> |
40 | #include <console/kconsole.h> |
41 | #include <console/console.h> |
41 | #include <console/console.h> |
42 | #include <console/chardev.h> |
42 | #include <console/chardev.h> |
43 | #include <console/cmd.h> |
43 | #include <console/cmd.h> |
44 | #include <print.h> |
44 | #include <print.h> |
45 | #include <panic.h> |
45 | #include <panic.h> |
46 | #include <arch/types.h> |
46 | #include <arch/types.h> |
47 | #include <adt/list.h> |
47 | #include <adt/list.h> |
48 | #include <arch.h> |
48 | #include <arch.h> |
49 | #include <macros.h> |
49 | #include <macros.h> |
50 | #include <debug.h> |
50 | #include <debug.h> |
51 | #include <func.h> |
51 | #include <func.h> |
52 | #include <string.h> |
52 | #include <string.h> |
53 | #include <macros.h> |
53 | #include <macros.h> |
54 | #include <sysinfo/sysinfo.h> |
54 | #include <sysinfo/sysinfo.h> |
55 | #include <ddi/device.h> |
55 | #include <ddi/device.h> |
56 | #include <symtab.h> |
56 | #include <symtab.h> |
57 | #include <errno.h> |
57 | #include <errno.h> |
58 | #include <putchar.h> |
58 | #include <putchar.h> |
59 | 59 | ||
60 | /** Simple kernel console. |
60 | /** Simple kernel console. |
61 | * |
61 | * |
62 | * The console is realized by kernel thread kconsole. |
62 | * The console is realized by kernel thread kconsole. |
63 | * It doesn't understand any useful command on its own, |
63 | * It doesn't understand any useful command on its own, |
64 | * but makes it possible for other kernel subsystems to |
64 | * but makes it possible for other kernel subsystems to |
65 | * register their own commands. |
65 | * register their own commands. |
66 | */ |
66 | */ |
67 | 67 | ||
68 | /** Locking. |
68 | /** Locking. |
69 | * |
69 | * |
70 | * There is a list of cmd_info_t structures. This list |
70 | * There is a list of cmd_info_t structures. This list |
71 | * is protected by cmd_lock spinlock. Note that specially |
71 | * is protected by cmd_lock spinlock. Note that specially |
72 | * the link elements of cmd_info_t are protected by |
72 | * the link elements of cmd_info_t are protected by |
73 | * this lock. |
73 | * this lock. |
74 | * |
74 | * |
75 | * Each cmd_info_t also has its own lock, which protects |
75 | * Each cmd_info_t also has its own lock, which protects |
76 | * all elements thereof except the link element. |
76 | * all elements thereof except the link element. |
77 | * |
77 | * |
78 | * cmd_lock must be acquired before any cmd_info lock. |
78 | * cmd_lock must be acquired before any cmd_info lock. |
79 | * When locking two cmd info structures, structure with |
79 | * When locking two cmd info structures, structure with |
80 | * lower address must be locked first. |
80 | * lower address must be locked first. |
81 | */ |
81 | */ |
82 | 82 | ||
83 | SPINLOCK_INITIALIZE(cmd_lock); /**< Lock protecting command list. */ |
83 | SPINLOCK_INITIALIZE(cmd_lock); /**< Lock protecting command list. */ |
84 | LIST_INITIALIZE(cmd_head); /**< Command list. */ |
84 | LIST_INITIALIZE(cmd_head); /**< Command list. */ |
85 | 85 | ||
86 | static cmd_info_t *parse_cmdline(char *cmdline, size_t len); |
86 | static cmd_info_t *parse_cmdline(char *cmdline, size_t len); |
87 | static bool parse_argument(char *cmdline, size_t len, index_t *start, |
87 | static bool parse_argument(char *cmdline, size_t len, index_t *start, |
88 | index_t *end); |
88 | index_t *end); |
89 | static char history[KCONSOLE_HISTORY][MAX_CMDLINE] = {}; |
89 | static char history[KCONSOLE_HISTORY][MAX_CMDLINE] = {}; |
90 | 90 | ||
91 | /** Initialize kconsole data structures |
91 | /** Initialize kconsole data structures |
92 | * |
92 | * |
93 | * This is the most basic initialization, almost no |
93 | * This is the most basic initialization, almost no |
94 | * other kernel subsystem is ready yet. |
94 | * other kernel subsystem is ready yet. |
95 | * |
95 | * |
96 | */ |
96 | */ |
97 | void kconsole_init(void) |
97 | void kconsole_init(void) |
98 | { |
98 | { |
99 | unsigned int i; |
99 | unsigned int i; |
100 | 100 | ||
101 | cmd_init(); |
101 | cmd_init(); |
102 | for (i = 0; i < KCONSOLE_HISTORY; i++) |
102 | for (i = 0; i < KCONSOLE_HISTORY; i++) |
103 | history[i][0] = '\0'; |
103 | history[i][0] = '\0'; |
104 | } |
104 | } |
105 | 105 | ||
106 | /** Register kconsole command. |
106 | /** Register kconsole command. |
107 | * |
107 | * |
108 | * @param cmd Structure describing the command. |
108 | * @param cmd Structure describing the command. |
109 | * |
109 | * |
110 | * @return 0 on failure, 1 on success. |
110 | * @return 0 on failure, 1 on success. |
111 | */ |
111 | */ |
112 | int cmd_register(cmd_info_t *cmd) |
112 | int cmd_register(cmd_info_t *cmd) |
113 | { |
113 | { |
114 | link_t *cur; |
114 | link_t *cur; |
115 | 115 | ||
116 | spinlock_lock(&cmd_lock); |
116 | spinlock_lock(&cmd_lock); |
117 | 117 | ||
118 | /* |
118 | /* |
119 | * Make sure the command is not already listed. |
119 | * Make sure the command is not already listed. |
120 | */ |
120 | */ |
121 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
121 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
122 | cmd_info_t *hlp; |
122 | cmd_info_t *hlp; |
123 | 123 | ||
124 | hlp = list_get_instance(cur, cmd_info_t, link); |
124 | hlp = list_get_instance(cur, cmd_info_t, link); |
125 | 125 | ||
126 | if (hlp == cmd) { |
126 | if (hlp == cmd) { |
127 | /* The command is already there. */ |
127 | /* The command is already there. */ |
128 | spinlock_unlock(&cmd_lock); |
128 | spinlock_unlock(&cmd_lock); |
129 | return 0; |
129 | return 0; |
130 | } |
130 | } |
131 | 131 | ||
132 | /* Avoid deadlock. */ |
132 | /* Avoid deadlock. */ |
133 | if (hlp < cmd) { |
133 | if (hlp < cmd) { |
134 | spinlock_lock(&hlp->lock); |
134 | spinlock_lock(&hlp->lock); |
135 | spinlock_lock(&cmd->lock); |
135 | spinlock_lock(&cmd->lock); |
136 | } else { |
136 | } else { |
137 | spinlock_lock(&cmd->lock); |
137 | spinlock_lock(&cmd->lock); |
138 | spinlock_lock(&hlp->lock); |
138 | spinlock_lock(&hlp->lock); |
139 | } |
139 | } |
140 | if ((strncmp(hlp->name, cmd->name, max(strlen(cmd->name), |
140 | if ((strncmp(hlp->name, cmd->name, max(str_size(cmd->name), |
141 | strlen(hlp->name))) == 0)) { |
141 | str_size(hlp->name))) == 0)) { |
142 | /* The command is already there. */ |
142 | /* The command is already there. */ |
143 | spinlock_unlock(&hlp->lock); |
143 | spinlock_unlock(&hlp->lock); |
144 | spinlock_unlock(&cmd->lock); |
144 | spinlock_unlock(&cmd->lock); |
145 | spinlock_unlock(&cmd_lock); |
145 | spinlock_unlock(&cmd_lock); |
146 | return 0; |
146 | return 0; |
147 | } |
147 | } |
148 | 148 | ||
149 | spinlock_unlock(&hlp->lock); |
149 | spinlock_unlock(&hlp->lock); |
150 | spinlock_unlock(&cmd->lock); |
150 | spinlock_unlock(&cmd->lock); |
151 | } |
151 | } |
152 | 152 | ||
153 | /* |
153 | /* |
154 | * Now the command can be added. |
154 | * Now the command can be added. |
155 | */ |
155 | */ |
156 | list_append(&cmd->link, &cmd_head); |
156 | list_append(&cmd->link, &cmd_head); |
157 | 157 | ||
158 | spinlock_unlock(&cmd_lock); |
158 | spinlock_unlock(&cmd_lock); |
159 | return 1; |
159 | return 1; |
160 | } |
160 | } |
161 | 161 | ||
162 | /** Print count times a character */ |
162 | /** Print count times a character */ |
163 | static void rdln_print_c(wchar_t ch, count_t count) |
163 | static void rdln_print_c(wchar_t ch, count_t count) |
164 | { |
164 | { |
165 | count_t i; |
165 | count_t i; |
166 | for (i = 0; i < count; i++) |
166 | for (i = 0; i < count; i++) |
167 | putchar(ch); |
167 | putchar(ch); |
168 | } |
168 | } |
169 | 169 | ||
170 | /** Insert character to string */ |
170 | /** Insert character to string */ |
171 | static void insert_char(char *str, char ch, int pos) |
171 | static void insert_char(char *str, char ch, int pos) |
172 | { |
172 | { |
173 | int i; |
173 | int i; |
174 | 174 | ||
175 | for (i = strlen(str); i > pos; i--) |
175 | for (i = str_size(str); i > pos; i--) |
176 | str[i] = str[i - 1]; |
176 | str[i] = str[i - 1]; |
177 | str[pos] = ch; |
177 | str[pos] = ch; |
178 | } |
178 | } |
179 | 179 | ||
180 | /** Try to find a command beginning with prefix */ |
180 | /** Try to find a command beginning with prefix */ |
181 | static const char *cmdtab_search_one(const char *name,link_t **startpos) |
181 | static const char *cmdtab_search_one(const char *name,link_t **startpos) |
182 | { |
182 | { |
183 | size_t namelen = strlen(name); |
183 | size_t namelen = str_size(name); |
184 | const char *curname; |
184 | const char *curname; |
185 | 185 | ||
186 | spinlock_lock(&cmd_lock); |
186 | spinlock_lock(&cmd_lock); |
187 | 187 | ||
188 | if (!*startpos) |
188 | if (!*startpos) |
189 | *startpos = cmd_head.next; |
189 | *startpos = cmd_head.next; |
190 | 190 | ||
191 | for (; *startpos != &cmd_head; *startpos = (*startpos)->next) { |
191 | for (; *startpos != &cmd_head; *startpos = (*startpos)->next) { |
192 | cmd_info_t *hlp; |
192 | cmd_info_t *hlp; |
193 | hlp = list_get_instance(*startpos, cmd_info_t, link); |
193 | hlp = list_get_instance(*startpos, cmd_info_t, link); |
194 | 194 | ||
195 | curname = hlp->name; |
195 | curname = hlp->name; |
196 | if (strlen(curname) < namelen) |
196 | if (str_size(curname) < namelen) |
197 | continue; |
197 | continue; |
198 | if (strncmp(curname, name, namelen) == 0) { |
198 | if (strncmp(curname, name, namelen) == 0) { |
199 | spinlock_unlock(&cmd_lock); |
199 | spinlock_unlock(&cmd_lock); |
200 | return curname+namelen; |
200 | return curname+namelen; |
201 | } |
201 | } |
202 | } |
202 | } |
203 | spinlock_unlock(&cmd_lock); |
203 | spinlock_unlock(&cmd_lock); |
204 | return NULL; |
204 | return NULL; |
205 | } |
205 | } |
206 | 206 | ||
207 | 207 | ||
208 | /** Command completion of the commands |
208 | /** Command completion of the commands |
209 | * |
209 | * |
210 | * @param name - string to match, changed to hint on exit |
210 | * @param name - string to match, changed to hint on exit |
211 | * @return number of found matches |
211 | * @return number of found matches |
212 | */ |
212 | */ |
213 | static int cmdtab_compl(char *name) |
213 | static int cmdtab_compl(char *name) |
214 | { |
214 | { |
215 | static char output[/*MAX_SYMBOL_NAME*/128 + 1]; |
215 | static char output[/*MAX_SYMBOL_NAME*/128 + 1]; |
216 | link_t *startpos = NULL; |
216 | link_t *startpos = NULL; |
217 | const char *foundtxt; |
217 | const char *foundtxt; |
218 | int found = 0; |
218 | int found = 0; |
219 | int i; |
219 | int i; |
220 | 220 | ||
221 | output[0] = '\0'; |
221 | output[0] = '\0'; |
222 | while ((foundtxt = cmdtab_search_one(name, &startpos))) { |
222 | while ((foundtxt = cmdtab_search_one(name, &startpos))) { |
223 | startpos = startpos->next; |
223 | startpos = startpos->next; |
224 | if (!found) |
224 | if (!found) |
225 | strncpy(output, foundtxt, strlen(foundtxt) + 1); |
225 | strncpy(output, foundtxt, str_size(foundtxt) + 1); |
226 | else { |
226 | else { |
227 | for (i = 0; output[i] && foundtxt[i] && |
227 | for (i = 0; output[i] && foundtxt[i] && |
228 | output[i] == foundtxt[i]; i++) |
228 | output[i] == foundtxt[i]; i++) |
229 | ; |
229 | ; |
230 | output[i] = '\0'; |
230 | output[i] = '\0'; |
231 | } |
231 | } |
232 | found++; |
232 | found++; |
233 | } |
233 | } |
234 | if (!found) |
234 | if (!found) |
235 | return 0; |
235 | return 0; |
236 | 236 | ||
237 | if (found > 1 && !strlen(output)) { |
237 | if (found > 1 && !str_size(output)) { |
238 | printf("\n"); |
238 | printf("\n"); |
239 | startpos = NULL; |
239 | startpos = NULL; |
240 | while ((foundtxt = cmdtab_search_one(name, &startpos))) { |
240 | while ((foundtxt = cmdtab_search_one(name, &startpos))) { |
241 | cmd_info_t *hlp; |
241 | cmd_info_t *hlp; |
242 | hlp = list_get_instance(startpos, cmd_info_t, link); |
242 | hlp = list_get_instance(startpos, cmd_info_t, link); |
243 | printf("%s - %s\n", hlp->name, hlp->description); |
243 | printf("%s - %s\n", hlp->name, hlp->description); |
244 | startpos = startpos->next; |
244 | startpos = startpos->next; |
245 | } |
245 | } |
246 | } |
246 | } |
247 | strncpy(name, output, 128/*MAX_SYMBOL_NAME*/); |
247 | strncpy(name, output, 128/*MAX_SYMBOL_NAME*/); |
248 | return found; |
248 | return found; |
249 | } |
249 | } |
250 | 250 | ||
251 | static char *clever_readline(const char *prompt, indev_t *input) |
251 | static char *clever_readline(const char *prompt, indev_t *input) |
252 | { |
252 | { |
253 | static int histposition = 0; |
253 | static int histposition = 0; |
254 | 254 | ||
255 | static char tmp[MAX_CMDLINE + 1]; |
255 | static char tmp[MAX_CMDLINE + 1]; |
256 | int curlen = 0, position = 0; |
256 | int curlen = 0, position = 0; |
257 | char *current = history[histposition]; |
257 | char *current = history[histposition]; |
258 | int i; |
258 | int i; |
259 | char mod; /* Command Modifier */ |
259 | char mod; /* Command Modifier */ |
260 | char c; |
260 | char c; |
261 | 261 | ||
262 | printf("%s> ", prompt); |
262 | printf("%s> ", prompt); |
263 | while (1) { |
263 | while (1) { |
264 | c = _getc(input); |
264 | c = _getc(input); |
265 | if (c == '\n') { |
265 | if (c == '\n') { |
266 | putchar(c); |
266 | putchar(c); |
267 | break; |
267 | break; |
268 | } |
268 | } |
269 | if (c == '\b') { /* Backspace */ |
269 | if (c == '\b') { /* Backspace */ |
270 | if (position == 0) |
270 | if (position == 0) |
271 | continue; |
271 | continue; |
272 | for (i = position; i < curlen; i++) |
272 | for (i = position; i < curlen; i++) |
273 | current[i - 1] = current[i]; |
273 | current[i - 1] = current[i]; |
274 | curlen--; |
274 | curlen--; |
275 | position--; |
275 | position--; |
276 | putchar('\b'); |
276 | putchar('\b'); |
277 | for (i = position; i < curlen; i++) |
277 | for (i = position; i < curlen; i++) |
278 | putchar(current[i]); |
278 | putchar(current[i]); |
279 | putchar(' '); |
279 | putchar(' '); |
280 | rdln_print_c('\b', curlen - position + 1); |
280 | rdln_print_c('\b', curlen - position + 1); |
281 | continue; |
281 | continue; |
282 | } |
282 | } |
283 | if (c == '\t') { /* Tabulator */ |
283 | if (c == '\t') { /* Tabulator */ |
284 | int found; |
284 | int found; |
285 | 285 | ||
286 | /* Move to the end of the word */ |
286 | /* Move to the end of the word */ |
287 | for (; position < curlen && current[position] != ' '; |
287 | for (; position < curlen && current[position] != ' '; |
288 | position++) |
288 | position++) |
289 | putchar(current[position]); |
289 | putchar(current[position]); |
290 | /* Copy to tmp last word */ |
290 | /* Copy to tmp last word */ |
291 | for (i = position - 1; i >= 0 && current[i] != ' '; i--) |
291 | for (i = position - 1; i >= 0 && current[i] != ' '; i--) |
292 | ; |
292 | ; |
293 | /* If word begins with * or &, skip it */ |
293 | /* If word begins with * or &, skip it */ |
294 | if (tmp[0] == '*' || tmp[0] == '&') |
294 | if (tmp[0] == '*' || tmp[0] == '&') |
295 | for (i = 1; tmp[i]; i++) |
295 | for (i = 1; tmp[i]; i++) |
296 | tmp[i - 1] = tmp[i]; |
296 | tmp[i - 1] = tmp[i]; |
297 | i++; /* I is at the start of the word */ |
297 | i++; /* I is at the start of the word */ |
298 | strncpy(tmp, current + i, position - i + 1); |
298 | strncpy(tmp, current + i, position - i + 1); |
299 | 299 | ||
300 | if (i == 0) { /* Command completion */ |
300 | if (i == 0) { /* Command completion */ |
301 | found = cmdtab_compl(tmp); |
301 | found = cmdtab_compl(tmp); |
302 | } else { /* Symtab completion */ |
302 | } else { /* Symtab completion */ |
303 | found = symtab_compl(tmp); |
303 | found = symtab_compl(tmp); |
304 | } |
304 | } |
305 | 305 | ||
306 | if (found == 0) |
306 | if (found == 0) |
307 | continue; |
307 | continue; |
308 | for (i = 0; tmp[i] && curlen < MAX_CMDLINE; |
308 | for (i = 0; tmp[i] && curlen < MAX_CMDLINE; |
309 | i++, curlen++) |
309 | i++, curlen++) |
310 | insert_char(current, tmp[i], i + position); |
310 | insert_char(current, tmp[i], i + position); |
311 | 311 | ||
312 | if (strlen(tmp) || found == 1) { /* If we have a hint */ |
312 | if (str_size(tmp) || found == 1) { /* If we have a hint */ |
313 | for (i = position; i < curlen; i++) |
313 | for (i = position; i < curlen; i++) |
314 | putchar(current[i]); |
314 | putchar(current[i]); |
315 | position += strlen(tmp); |
315 | position += str_size(tmp); |
316 | /* Add space to end */ |
316 | /* Add space to end */ |
317 | if (found == 1 && position == curlen && |
317 | if (found == 1 && position == curlen && |
318 | curlen < MAX_CMDLINE) { |
318 | curlen < MAX_CMDLINE) { |
319 | current[position] = ' '; |
319 | current[position] = ' '; |
320 | curlen++; |
320 | curlen++; |
321 | position++; |
321 | position++; |
322 | putchar(' '); |
322 | putchar(' '); |
323 | } |
323 | } |
324 | } else { /* No hint, table was printed */ |
324 | } else { /* No hint, table was printed */ |
325 | printf("%s> ", prompt); |
325 | printf("%s> ", prompt); |
326 | for (i = 0; i < curlen; i++) |
326 | for (i = 0; i < curlen; i++) |
327 | putchar(current[i]); |
327 | putchar(current[i]); |
328 | position += strlen(tmp); |
328 | position += str_size(tmp); |
329 | } |
329 | } |
330 | rdln_print_c('\b', curlen - position); |
330 | rdln_print_c('\b', curlen - position); |
331 | continue; |
331 | continue; |
332 | } |
332 | } |
333 | if (c == 0x1b) { /* Special command */ |
333 | if (c == 0x1b) { /* Special command */ |
334 | mod = _getc(input); |
334 | mod = _getc(input); |
335 | c = _getc(input); |
335 | c = _getc(input); |
336 | 336 | ||
337 | if (mod != 0x5b && mod != 0x4f) |
337 | if (mod != 0x5b && mod != 0x4f) |
338 | continue; |
338 | continue; |
339 | 339 | ||
340 | if (c == 0x33 && _getc(input) == 0x7e) { |
340 | if (c == 0x33 && _getc(input) == 0x7e) { |
341 | /* Delete */ |
341 | /* Delete */ |
342 | if (position == curlen) |
342 | if (position == curlen) |
343 | continue; |
343 | continue; |
344 | for (i = position + 1; i < curlen; i++) { |
344 | for (i = position + 1; i < curlen; i++) { |
345 | putchar(current[i]); |
345 | putchar(current[i]); |
346 | current[i - 1] = current[i]; |
346 | current[i - 1] = current[i]; |
347 | } |
347 | } |
348 | putchar(' '); |
348 | putchar(' '); |
349 | rdln_print_c('\b', curlen - position); |
349 | rdln_print_c('\b', curlen - position); |
350 | curlen--; |
350 | curlen--; |
351 | } else if (c == 0x48) { /* Home */ |
351 | } else if (c == 0x48) { /* Home */ |
352 | rdln_print_c('\b', position); |
352 | rdln_print_c('\b', position); |
353 | position = 0; |
353 | position = 0; |
354 | } else if (c == 0x46) { /* End */ |
354 | } else if (c == 0x46) { /* End */ |
355 | for (i = position; i < curlen; i++) |
355 | for (i = position; i < curlen; i++) |
356 | putchar(current[i]); |
356 | putchar(current[i]); |
357 | position = curlen; |
357 | position = curlen; |
358 | } else if (c == 0x44) { /* Left */ |
358 | } else if (c == 0x44) { /* Left */ |
359 | if (position > 0) { |
359 | if (position > 0) { |
360 | putchar('\b'); |
360 | putchar('\b'); |
361 | position--; |
361 | position--; |
362 | } |
362 | } |
363 | continue; |
363 | continue; |
364 | } else if (c == 0x43) { /* Right */ |
364 | } else if (c == 0x43) { /* Right */ |
365 | if (position < curlen) { |
365 | if (position < curlen) { |
366 | putchar(current[position]); |
366 | putchar(current[position]); |
367 | position++; |
367 | position++; |
368 | } |
368 | } |
369 | continue; |
369 | continue; |
370 | } else if (c == 0x41 || c == 0x42) { |
370 | } else if (c == 0x41 || c == 0x42) { |
371 | /* Up, down */ |
371 | /* Up, down */ |
372 | rdln_print_c('\b', position); |
372 | rdln_print_c('\b', position); |
373 | rdln_print_c(' ', curlen); |
373 | rdln_print_c(' ', curlen); |
374 | rdln_print_c('\b', curlen); |
374 | rdln_print_c('\b', curlen); |
375 | if (c == 0x41) /* Up */ |
375 | if (c == 0x41) /* Up */ |
376 | histposition--; |
376 | histposition--; |
377 | else |
377 | else |
378 | histposition++; |
378 | histposition++; |
379 | if (histposition < 0) { |
379 | if (histposition < 0) { |
380 | histposition = KCONSOLE_HISTORY - 1; |
380 | histposition = KCONSOLE_HISTORY - 1; |
381 | } else { |
381 | } else { |
382 | histposition = |
382 | histposition = |
383 | histposition % KCONSOLE_HISTORY; |
383 | histposition % KCONSOLE_HISTORY; |
384 | } |
384 | } |
385 | current = history[histposition]; |
385 | current = history[histposition]; |
386 | printf("%s", current); |
386 | printf("%s", current); |
387 | curlen = strlen(current); |
387 | curlen = str_size(current); |
388 | position = curlen; |
388 | position = curlen; |
389 | continue; |
389 | continue; |
390 | } |
390 | } |
391 | continue; |
391 | continue; |
392 | } |
392 | } |
393 | if (curlen >= MAX_CMDLINE) |
393 | if (curlen >= MAX_CMDLINE) |
394 | continue; |
394 | continue; |
395 | 395 | ||
396 | insert_char(current, c, position); |
396 | insert_char(current, c, position); |
397 | 397 | ||
398 | curlen++; |
398 | curlen++; |
399 | for (i = position; i < curlen; i++) |
399 | for (i = position; i < curlen; i++) |
400 | putchar(current[i]); |
400 | putchar(current[i]); |
401 | position++; |
401 | position++; |
402 | rdln_print_c('\b',curlen - position); |
402 | rdln_print_c('\b',curlen - position); |
403 | } |
403 | } |
404 | if (curlen) { |
404 | if (curlen) { |
405 | histposition++; |
405 | histposition++; |
406 | histposition = histposition % KCONSOLE_HISTORY; |
406 | histposition = histposition % KCONSOLE_HISTORY; |
407 | } |
407 | } |
408 | current[curlen] = '\0'; |
408 | current[curlen] = '\0'; |
409 | return current; |
409 | return current; |
410 | } |
410 | } |
411 | 411 | ||
412 | bool kconsole_check_poll(void) |
412 | bool kconsole_check_poll(void) |
413 | { |
413 | { |
414 | return check_poll(stdin); |
414 | return check_poll(stdin); |
415 | } |
415 | } |
416 | 416 | ||
417 | /** Kernel console prompt. |
417 | /** Kernel console prompt. |
418 | * |
418 | * |
419 | * @param prompt Kernel console prompt (e.g kconsole/panic). |
419 | * @param prompt Kernel console prompt (e.g kconsole/panic). |
420 | * @param msg Message to display in the beginning. |
420 | * @param msg Message to display in the beginning. |
421 | * @param kcon Wait for keypress to show the prompt |
421 | * @param kcon Wait for keypress to show the prompt |
422 | * and never exit. |
422 | * and never exit. |
423 | * |
423 | * |
424 | */ |
424 | */ |
425 | void kconsole(char *prompt, char *msg, bool kcon) |
425 | void kconsole(char *prompt, char *msg, bool kcon) |
426 | { |
426 | { |
427 | cmd_info_t *cmd_info; |
427 | cmd_info_t *cmd_info; |
428 | count_t len; |
428 | count_t len; |
429 | char *cmdline; |
429 | char *cmdline; |
430 | 430 | ||
431 | if (!stdin) { |
431 | if (!stdin) { |
432 | LOG("No stdin for kernel console"); |
432 | LOG("No stdin for kernel console"); |
433 | return; |
433 | return; |
434 | } |
434 | } |
435 | 435 | ||
436 | if (msg) |
436 | if (msg) |
437 | printf("%s", msg); |
437 | printf("%s", msg); |
438 | 438 | ||
439 | if (kcon) |
439 | if (kcon) |
440 | _getc(stdin); |
440 | _getc(stdin); |
441 | else |
441 | else |
442 | printf("Type \"exit\" to leave the console.\n"); |
442 | printf("Type \"exit\" to leave the console.\n"); |
443 | 443 | ||
444 | while (true) { |
444 | while (true) { |
445 | cmdline = clever_readline((char *) prompt, stdin); |
445 | cmdline = clever_readline((char *) prompt, stdin); |
446 | len = strlen(cmdline); |
446 | len = str_size(cmdline); |
447 | if (!len) |
447 | if (!len) |
448 | continue; |
448 | continue; |
449 | 449 | ||
450 | if ((!kcon) && (len == 4) && (strncmp(cmdline, "exit", 4) == 0)) |
450 | if ((!kcon) && (len == 4) && (strncmp(cmdline, "exit", 4) == 0)) |
451 | break; |
451 | break; |
452 | 452 | ||
453 | cmd_info = parse_cmdline(cmdline, len); |
453 | cmd_info = parse_cmdline(cmdline, len); |
454 | if (!cmd_info) |
454 | if (!cmd_info) |
455 | continue; |
455 | continue; |
456 | 456 | ||
457 | (void) cmd_info->func(cmd_info->argv); |
457 | (void) cmd_info->func(cmd_info->argv); |
458 | } |
458 | } |
459 | } |
459 | } |
460 | 460 | ||
461 | /** Kernel console managing thread. |
461 | /** Kernel console managing thread. |
462 | * |
462 | * |
463 | */ |
463 | */ |
464 | void kconsole_thread(void *data) |
464 | void kconsole_thread(void *data) |
465 | { |
465 | { |
466 | kconsole("kconsole", "Kernel console ready (press any key to activate)\n", true); |
466 | kconsole("kconsole", "Kernel console ready (press any key to activate)\n", true); |
467 | } |
467 | } |
468 | 468 | ||
469 | static int parse_int_arg(char *text, size_t len, unative_t *result) |
469 | static int parse_int_arg(char *text, size_t len, unative_t *result) |
470 | { |
470 | { |
471 | uintptr_t symaddr; |
471 | uintptr_t symaddr; |
472 | bool isaddr = false; |
472 | bool isaddr = false; |
473 | bool isptr = false; |
473 | bool isptr = false; |
474 | int rc; |
474 | int rc; |
475 | 475 | ||
476 | static char symname[MAX_SYMBOL_NAME]; |
476 | static char symname[MAX_SYMBOL_NAME]; |
477 | 477 | ||
478 | /* If we get a name, try to find it in symbol table */ |
478 | /* If we get a name, try to find it in symbol table */ |
479 | if (text[0] == '&') { |
479 | if (text[0] == '&') { |
480 | isaddr = true; |
480 | isaddr = true; |
481 | text++; |
481 | text++; |
482 | len--; |
482 | len--; |
483 | } else if (text[0] == '*') { |
483 | } else if (text[0] == '*') { |
484 | isptr = true; |
484 | isptr = true; |
485 | text++; |
485 | text++; |
486 | len--; |
486 | len--; |
487 | } |
487 | } |
488 | if (text[0] < '0' || text[0] > '9') { |
488 | if (text[0] < '0' || text[0] > '9') { |
489 | strncpy(symname, text, min(len + 1, MAX_SYMBOL_NAME)); |
489 | strncpy(symname, text, min(len + 1, MAX_SYMBOL_NAME)); |
490 | rc = symtab_addr_lookup(symname, &symaddr); |
490 | rc = symtab_addr_lookup(symname, &symaddr); |
491 | switch (rc) { |
491 | switch (rc) { |
492 | case ENOENT: |
492 | case ENOENT: |
493 | printf("Symbol %s not found.\n", symname); |
493 | printf("Symbol %s not found.\n", symname); |
494 | return -1; |
494 | return -1; |
495 | case EOVERFLOW: |
495 | case EOVERFLOW: |
496 | printf("Duplicate symbol %s.\n", symname); |
496 | printf("Duplicate symbol %s.\n", symname); |
497 | symtab_print_search(symname); |
497 | symtab_print_search(symname); |
498 | return -1; |
498 | return -1; |
499 | default: |
499 | default: |
500 | printf("No symbol information available.\n"); |
500 | printf("No symbol information available.\n"); |
501 | return -1; |
501 | return -1; |
502 | } |
502 | } |
503 | 503 | ||
504 | if (isaddr) |
504 | if (isaddr) |
505 | *result = (unative_t)symaddr; |
505 | *result = (unative_t)symaddr; |
506 | else if (isptr) |
506 | else if (isptr) |
507 | *result = **((unative_t **)symaddr); |
507 | *result = **((unative_t **)symaddr); |
508 | else |
508 | else |
509 | *result = *((unative_t *)symaddr); |
509 | *result = *((unative_t *)symaddr); |
510 | } else { /* It's a number - convert it */ |
510 | } else { /* It's a number - convert it */ |
511 | *result = atoi(text); |
511 | *result = atoi(text); |
512 | if (isptr) |
512 | if (isptr) |
513 | *result = *((unative_t *)*result); |
513 | *result = *((unative_t *)*result); |
514 | } |
514 | } |
515 | 515 | ||
516 | return 0; |
516 | return 0; |
517 | } |
517 | } |
518 | 518 | ||
519 | /** Parse command line. |
519 | /** Parse command line. |
520 | * |
520 | * |
521 | * @param cmdline Command line as read from input device. |
521 | * @param cmdline Command line as read from input device. |
522 | * @param len Command line length. |
522 | * @param len Command line length. |
523 | * |
523 | * |
524 | * @return Structure describing the command. |
524 | * @return Structure describing the command. |
525 | */ |
525 | */ |
526 | cmd_info_t *parse_cmdline(char *cmdline, size_t len) |
526 | cmd_info_t *parse_cmdline(char *cmdline, size_t len) |
527 | { |
527 | { |
528 | index_t start = 0, end = 0; |
528 | index_t start = 0, end = 0; |
529 | cmd_info_t *cmd = NULL; |
529 | cmd_info_t *cmd = NULL; |
530 | link_t *cur; |
530 | link_t *cur; |
531 | count_t i; |
531 | count_t i; |
532 | int error = 0; |
532 | int error = 0; |
533 | 533 | ||
534 | if (!parse_argument(cmdline, len, &start, &end)) { |
534 | if (!parse_argument(cmdline, len, &start, &end)) { |
535 | /* Command line did not contain alphanumeric word. */ |
535 | /* Command line did not contain alphanumeric word. */ |
536 | return NULL; |
536 | return NULL; |
537 | } |
537 | } |
538 | 538 | ||
539 | spinlock_lock(&cmd_lock); |
539 | spinlock_lock(&cmd_lock); |
540 | 540 | ||
541 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
541 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
542 | cmd_info_t *hlp; |
542 | cmd_info_t *hlp; |
543 | 543 | ||
544 | hlp = list_get_instance(cur, cmd_info_t, link); |
544 | hlp = list_get_instance(cur, cmd_info_t, link); |
545 | spinlock_lock(&hlp->lock); |
545 | spinlock_lock(&hlp->lock); |
546 | 546 | ||
547 | if (strncmp(hlp->name, &cmdline[start], max(strlen(hlp->name), |
547 | if (strncmp(hlp->name, &cmdline[start], max(str_size(hlp->name), |
548 | end - start + 1)) == 0) { |
548 | end - start + 1)) == 0) { |
549 | cmd = hlp; |
549 | cmd = hlp; |
550 | break; |
550 | break; |
551 | } |
551 | } |
552 | 552 | ||
553 | spinlock_unlock(&hlp->lock); |
553 | spinlock_unlock(&hlp->lock); |
554 | } |
554 | } |
555 | 555 | ||
556 | spinlock_unlock(&cmd_lock); |
556 | spinlock_unlock(&cmd_lock); |
557 | 557 | ||
558 | if (!cmd) { |
558 | if (!cmd) { |
559 | /* Unknown command. */ |
559 | /* Unknown command. */ |
560 | printf("Unknown command.\n"); |
560 | printf("Unknown command.\n"); |
561 | return NULL; |
561 | return NULL; |
562 | } |
562 | } |
563 | 563 | ||
564 | /* cmd == hlp is locked */ |
564 | /* cmd == hlp is locked */ |
565 | 565 | ||
566 | /* |
566 | /* |
567 | * The command line must be further analyzed and |
567 | * The command line must be further analyzed and |
568 | * the parameters therefrom must be matched and |
568 | * the parameters therefrom must be matched and |
569 | * converted to those specified in the cmd info |
569 | * converted to those specified in the cmd info |
570 | * structure. |
570 | * structure. |
571 | */ |
571 | */ |
572 | 572 | ||
573 | for (i = 0; i < cmd->argc; i++) { |
573 | for (i = 0; i < cmd->argc; i++) { |
574 | char *buf; |
574 | char *buf; |
575 | start = end + 1; |
575 | start = end + 1; |
576 | if (!parse_argument(cmdline, len, &start, &end)) { |
576 | if (!parse_argument(cmdline, len, &start, &end)) { |
577 | printf("Too few arguments.\n"); |
577 | printf("Too few arguments.\n"); |
578 | spinlock_unlock(&cmd->lock); |
578 | spinlock_unlock(&cmd->lock); |
579 | return NULL; |
579 | return NULL; |
580 | } |
580 | } |
581 | 581 | ||
582 | error = 0; |
582 | error = 0; |
583 | switch (cmd->argv[i].type) { |
583 | switch (cmd->argv[i].type) { |
584 | case ARG_TYPE_STRING: |
584 | case ARG_TYPE_STRING: |
585 | buf = (char *) cmd->argv[i].buffer; |
585 | buf = (char *) cmd->argv[i].buffer; |
586 | strncpy(buf, (const char *) &cmdline[start], |
586 | strncpy(buf, (const char *) &cmdline[start], |
587 | min((end - start) + 2, cmd->argv[i].len)); |
587 | min((end - start) + 2, cmd->argv[i].len)); |
588 | buf[min((end - start) + 1, cmd->argv[i].len - 1)] = |
588 | buf[min((end - start) + 1, cmd->argv[i].len - 1)] = |
589 | '\0'; |
589 | '\0'; |
590 | break; |
590 | break; |
591 | case ARG_TYPE_INT: |
591 | case ARG_TYPE_INT: |
592 | if (parse_int_arg(cmdline + start, end - start + 1, |
592 | if (parse_int_arg(cmdline + start, end - start + 1, |
593 | &cmd->argv[i].intval)) |
593 | &cmd->argv[i].intval)) |
594 | error = 1; |
594 | error = 1; |
595 | break; |
595 | break; |
596 | case ARG_TYPE_VAR: |
596 | case ARG_TYPE_VAR: |
597 | if (start != end && cmdline[start] == '"' && |
597 | if (start != end && cmdline[start] == '"' && |
598 | cmdline[end] == '"') { |
598 | cmdline[end] == '"') { |
599 | buf = (char *) cmd->argv[i].buffer; |
599 | buf = (char *) cmd->argv[i].buffer; |
600 | strncpy(buf, (const char *) &cmdline[start + 1], |
600 | strncpy(buf, (const char *) &cmdline[start + 1], |
601 | min((end-start), cmd->argv[i].len)); |
601 | min((end-start), cmd->argv[i].len)); |
602 | buf[min((end - start), cmd->argv[i].len - 1)] = |
602 | buf[min((end - start), cmd->argv[i].len - 1)] = |
603 | '\0'; |
603 | '\0'; |
604 | cmd->argv[i].intval = (unative_t) buf; |
604 | cmd->argv[i].intval = (unative_t) buf; |
605 | cmd->argv[i].vartype = ARG_TYPE_STRING; |
605 | cmd->argv[i].vartype = ARG_TYPE_STRING; |
606 | } else if (!parse_int_arg(cmdline + start, |
606 | } else if (!parse_int_arg(cmdline + start, |
607 | end - start + 1, &cmd->argv[i].intval)) { |
607 | end - start + 1, &cmd->argv[i].intval)) { |
608 | cmd->argv[i].vartype = ARG_TYPE_INT; |
608 | cmd->argv[i].vartype = ARG_TYPE_INT; |
609 | } else { |
609 | } else { |
610 | printf("Unrecognized variable argument.\n"); |
610 | printf("Unrecognized variable argument.\n"); |
611 | error = 1; |
611 | error = 1; |
612 | } |
612 | } |
613 | break; |
613 | break; |
614 | case ARG_TYPE_INVALID: |
614 | case ARG_TYPE_INVALID: |
615 | default: |
615 | default: |
616 | printf("invalid argument type\n"); |
616 | printf("invalid argument type\n"); |
617 | error = 1; |
617 | error = 1; |
618 | break; |
618 | break; |
619 | } |
619 | } |
620 | } |
620 | } |
621 | 621 | ||
622 | if (error) { |
622 | if (error) { |
623 | spinlock_unlock(&cmd->lock); |
623 | spinlock_unlock(&cmd->lock); |
624 | return NULL; |
624 | return NULL; |
625 | } |
625 | } |
626 | 626 | ||
627 | start = end + 1; |
627 | start = end + 1; |
628 | if (parse_argument(cmdline, len, &start, &end)) { |
628 | if (parse_argument(cmdline, len, &start, &end)) { |
629 | printf("Too many arguments.\n"); |
629 | printf("Too many arguments.\n"); |
630 | spinlock_unlock(&cmd->lock); |
630 | spinlock_unlock(&cmd->lock); |
631 | return NULL; |
631 | return NULL; |
632 | } |
632 | } |
633 | 633 | ||
634 | spinlock_unlock(&cmd->lock); |
634 | spinlock_unlock(&cmd->lock); |
635 | return cmd; |
635 | return cmd; |
636 | } |
636 | } |
637 | 637 | ||
638 | /** Parse argument. |
638 | /** Parse argument. |
639 | * |
639 | * |
640 | * Find start and end positions of command line argument. |
640 | * Find start and end positions of command line argument. |
641 | * |
641 | * |
642 | * @param cmdline Command line as read from the input device. |
642 | * @param cmdline Command line as read from the input device. |
643 | * @param len Number of characters in cmdline. |
643 | * @param len Number of characters in cmdline. |
644 | * @param start On entry, 'start' contains pointer to the index |
644 | * @param start On entry, 'start' contains pointer to the index |
645 | * of first unprocessed character of cmdline. |
645 | * of first unprocessed character of cmdline. |
646 | * On successful exit, it marks beginning of the next argument. |
646 | * On successful exit, it marks beginning of the next argument. |
647 | * @param end Undefined on entry. On exit, 'end' points to the last character |
647 | * @param end Undefined on entry. On exit, 'end' points to the last character |
648 | * of the next argument. |
648 | * of the next argument. |
649 | * |
649 | * |
650 | * @return false on failure, true on success. |
650 | * @return false on failure, true on success. |
651 | */ |
651 | */ |
652 | bool parse_argument(char *cmdline, size_t len, index_t *start, index_t *end) |
652 | bool parse_argument(char *cmdline, size_t len, index_t *start, index_t *end) |
653 | { |
653 | { |
654 | index_t i; |
654 | index_t i; |
655 | bool found_start = false; |
655 | bool found_start = false; |
656 | 656 | ||
657 | ASSERT(start != NULL); |
657 | ASSERT(start != NULL); |
658 | ASSERT(end != NULL); |
658 | ASSERT(end != NULL); |
659 | 659 | ||
660 | for (i = *start; i < len; i++) { |
660 | for (i = *start; i < len; i++) { |
661 | if (!found_start) { |
661 | if (!found_start) { |
662 | if (isspace(cmdline[i])) |
662 | if (isspace(cmdline[i])) |
663 | (*start)++; |
663 | (*start)++; |
664 | else |
664 | else |
665 | found_start = true; |
665 | found_start = true; |
666 | } else { |
666 | } else { |
667 | if (isspace(cmdline[i])) |
667 | if (isspace(cmdline[i])) |
668 | break; |
668 | break; |
669 | } |
669 | } |
670 | } |
670 | } |
671 | *end = i - 1; |
671 | *end = i - 1; |
672 | 672 | ||
673 | return found_start; |
673 | return found_start; |
674 | } |
674 | } |
675 | 675 | ||
676 | /** @} |
676 | /** @} |
677 | */ |
677 | */ |
678 | 678 |