1 /*
2 * Speakup kobject implementation
3 *
4 * Copyright (C) 2009 William Hubbs
5 *
6 * This code is based on kobject-example.c, which came with linux 2.6.x.
7 *
8 * Copyright (C) 2004-2007 Greg Kroah-Hartman <greg@kroah.com>
9 * Copyright (C) 2007 Novell Inc.
10 *
11 * Released under the GPL version 2 only.
12 *
13 */
14 #include <linux/slab.h> /* For kmalloc. */
15 #include <linux/kernel.h>
16 #include <linux/kobject.h>
17 #include <linux/string.h>
18 #include <linux/string_helpers.h>
19 #include <linux/sysfs.h>
20 #include <linux/ctype.h>
21
22 #include "speakup.h"
23 #include "spk_priv.h"
24
25 /*
26 * This is called when a user reads the characters or chartab sys file.
27 */
chars_chartab_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)28 static ssize_t chars_chartab_show(struct kobject *kobj,
29 struct kobj_attribute *attr, char *buf)
30 {
31 int i;
32 int len = 0;
33 char *cp;
34 char *buf_pointer = buf;
35 size_t bufsize = PAGE_SIZE;
36 unsigned long flags;
37
38 spin_lock_irqsave(&speakup_info.spinlock, flags);
39 *buf_pointer = '\0';
40 for (i = 0; i < 256; i++) {
41 if (bufsize <= 1)
42 break;
43 if (strcmp("characters", attr->attr.name) == 0) {
44 len = scnprintf(buf_pointer, bufsize, "%d\t%s\n",
45 i, spk_characters[i]);
46 } else { /* show chartab entry */
47 if (IS_TYPE(i, B_CTL))
48 cp = "B_CTL";
49 else if (IS_TYPE(i, WDLM))
50 cp = "WDLM";
51 else if (IS_TYPE(i, A_PUNC))
52 cp = "A_PUNC";
53 else if (IS_TYPE(i, PUNC))
54 cp = "PUNC";
55 else if (IS_TYPE(i, NUM))
56 cp = "NUM";
57 else if (IS_TYPE(i, A_CAP))
58 cp = "A_CAP";
59 else if (IS_TYPE(i, ALPHA))
60 cp = "ALPHA";
61 else if (IS_TYPE(i, B_CAPSYM))
62 cp = "B_CAPSYM";
63 else if (IS_TYPE(i, B_SYM))
64 cp = "B_SYM";
65 else
66 cp = "0";
67 len =
68 scnprintf(buf_pointer, bufsize, "%d\t%s\n", i, cp);
69 }
70 bufsize -= len;
71 buf_pointer += len;
72 }
73 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
74 return buf_pointer - buf;
75 }
76
77 /*
78 * Print informational messages or warnings after updating
79 * character descriptions or chartab entries.
80 */
report_char_chartab_status(int reset,int received,int used,int rejected,int do_characters)81 static void report_char_chartab_status(int reset, int received, int used,
82 int rejected, int do_characters)
83 {
84 static char const *object_type[] = {
85 "character class entries",
86 "character descriptions",
87 };
88 int len;
89 char buf[80];
90
91 if (reset) {
92 pr_info("%s reset to defaults\n", object_type[do_characters]);
93 } else if (received) {
94 len = snprintf(buf, sizeof(buf),
95 " updated %d of %d %s\n",
96 used, received, object_type[do_characters]);
97 if (rejected)
98 snprintf(buf + (len - 1), sizeof(buf) - (len - 1),
99 " with %d reject%s\n",
100 rejected, rejected > 1 ? "s" : "");
101 printk(buf);
102 }
103 }
104
105 /*
106 * This is called when a user changes the characters or chartab parameters.
107 */
chars_chartab_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)108 static ssize_t chars_chartab_store(struct kobject *kobj,
109 struct kobj_attribute *attr, const char *buf, size_t count)
110 {
111 char *cp = (char *) buf;
112 char *end = cp + count; /* the null at the end of the buffer */
113 char *linefeed = NULL;
114 char keyword[MAX_DESC_LEN + 1];
115 char *outptr = NULL; /* Will hold keyword or desc. */
116 char *temp = NULL;
117 char *desc = NULL;
118 ssize_t retval = count;
119 unsigned long flags;
120 unsigned long index = 0;
121 int charclass = 0;
122 int received = 0;
123 int used = 0;
124 int rejected = 0;
125 int reset = 0;
126 int do_characters = !strcmp(attr->attr.name, "characters");
127 size_t desc_length = 0;
128 int i;
129
130 spin_lock_irqsave(&speakup_info.spinlock, flags);
131 while (cp < end) {
132
133 while ((cp < end) && (*cp == ' ' || *cp == '\t'))
134 cp++;
135
136 if (cp == end)
137 break;
138 if ((*cp == '\n') || strchr("dDrR", *cp)) {
139 reset = 1;
140 break;
141 }
142 received++;
143
144 linefeed = strchr(cp, '\n');
145 if (!linefeed) {
146 rejected++;
147 break;
148 }
149
150 if (!isdigit(*cp)) {
151 rejected++;
152 cp = linefeed + 1;
153 continue;
154 }
155
156 index = simple_strtoul(cp, &temp, 10);
157 if (index > 255) {
158 rejected++;
159 cp = linefeed + 1;
160 continue;
161 }
162
163 while ((temp < linefeed) && (*temp == ' ' || *temp == '\t'))
164 temp++;
165
166 desc_length = linefeed - temp;
167 if (desc_length > MAX_DESC_LEN) {
168 rejected++;
169 cp = linefeed + 1;
170 continue;
171 }
172 if (do_characters) {
173 desc = kmalloc(desc_length + 1, GFP_ATOMIC);
174 if (!desc) {
175 retval = -ENOMEM;
176 reset = 1; /* just reset on error. */
177 break;
178 }
179 outptr = desc;
180 } else {
181 outptr = keyword;
182 }
183
184 for (i = 0; i < desc_length; i++)
185 outptr[i] = temp[i];
186 outptr[desc_length] = '\0';
187
188 if (do_characters) {
189 if (spk_characters[index] != spk_default_chars[index])
190 kfree(spk_characters[index]);
191 spk_characters[index] = desc;
192 used++;
193 } else {
194 charclass = spk_chartab_get_value(keyword);
195 if (charclass == 0) {
196 rejected++;
197 cp = linefeed + 1;
198 continue;
199 }
200 if (charclass != spk_chartab[index]) {
201 spk_chartab[index] = charclass;
202 used++;
203 }
204 }
205 cp = linefeed + 1;
206 }
207
208 if (reset) {
209 if (do_characters)
210 spk_reset_default_chars();
211 else
212 spk_reset_default_chartab();
213 }
214
215 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
216 report_char_chartab_status(reset, received, used, rejected,
217 do_characters);
218 return retval;
219 }
220
221 /*
222 * This is called when a user reads the keymap parameter.
223 */
keymap_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)224 static ssize_t keymap_show(struct kobject *kobj, struct kobj_attribute *attr,
225 char *buf)
226 {
227 char *cp = buf;
228 int i;
229 int n;
230 int num_keys;
231 int nstates;
232 u_char *cp1;
233 u_char ch;
234 unsigned long flags;
235
236 spin_lock_irqsave(&speakup_info.spinlock, flags);
237 cp1 = spk_key_buf + SHIFT_TBL_SIZE;
238 num_keys = (int)(*cp1);
239 nstates = (int)cp1[1];
240 cp += sprintf(cp, "%d, %d, %d,\n", KEY_MAP_VER, num_keys, nstates);
241 cp1 += 2; /* now pointing at shift states */
242 /* dump num_keys+1 as first row is shift states + flags,
243 * each subsequent row is key + states
244 */
245 for (n = 0; n <= num_keys; n++) {
246 for (i = 0; i <= nstates; i++) {
247 ch = *cp1++;
248 cp += sprintf(cp, "%d,", (int)ch);
249 *cp++ = (i < nstates) ? SPACE : '\n';
250 }
251 }
252 cp += sprintf(cp, "0, %d\n", KEY_MAP_VER);
253 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
254 return (int)(cp-buf);
255 }
256
257 /*
258 * This is called when a user changes the keymap parameter.
259 */
keymap_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)260 static ssize_t keymap_store(struct kobject *kobj, struct kobj_attribute *attr,
261 const char *buf, size_t count)
262 {
263 int i;
264 ssize_t ret = count;
265 char *in_buff = NULL;
266 char *cp;
267 u_char *cp1;
268 unsigned long flags;
269
270 spin_lock_irqsave(&speakup_info.spinlock, flags);
271 in_buff = kmemdup(buf, count + 1, GFP_ATOMIC);
272 if (!in_buff) {
273 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
274 return -ENOMEM;
275 }
276 if (strchr("dDrR", *in_buff)) {
277 spk_set_key_info(spk_key_defaults, spk_key_buf);
278 pr_info("keymap set to default values\n");
279 kfree(in_buff);
280 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
281 return count;
282 }
283 if (in_buff[count - 1] == '\n')
284 in_buff[count - 1] = '\0';
285 cp = in_buff;
286 cp1 = (u_char *)in_buff;
287 for (i = 0; i < 3; i++) {
288 cp = spk_s2uchar(cp, cp1);
289 cp1++;
290 }
291 i = (int)cp1[-2]+1;
292 i *= (int)cp1[-1]+1;
293 i += 2; /* 0 and last map ver */
294 if (cp1[-3] != KEY_MAP_VER || cp1[-1] > 10 ||
295 i+SHIFT_TBL_SIZE+4 >= sizeof(spk_key_buf)) {
296 pr_warn("i %d %d %d %d\n", i,
297 (int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
298 kfree(in_buff);
299 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
300 return -EINVAL;
301 }
302 while (--i >= 0) {
303 cp = spk_s2uchar(cp, cp1);
304 cp1++;
305 if (!(*cp))
306 break;
307 }
308 if (i != 0 || cp1[-1] != KEY_MAP_VER || cp1[-2] != 0) {
309 ret = -EINVAL;
310 pr_warn("end %d %d %d %d\n", i,
311 (int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
312 } else {
313 if (spk_set_key_info(in_buff, spk_key_buf)) {
314 spk_set_key_info(spk_key_defaults, spk_key_buf);
315 ret = -EINVAL;
316 pr_warn("set key failed\n");
317 }
318 }
319 kfree(in_buff);
320 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
321 return ret;
322 }
323
324 /*
325 * This is called when a user changes the value of the silent parameter.
326 */
silent_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)327 static ssize_t silent_store(struct kobject *kobj, struct kobj_attribute *attr,
328 const char *buf, size_t count)
329 {
330 int len;
331 struct vc_data *vc = vc_cons[fg_console].d;
332 char ch = 0;
333 char shut;
334 unsigned long flags;
335
336 len = strlen(buf);
337 if (len > 0 && len < 3) {
338 ch = buf[0];
339 if (ch == '\n')
340 ch = '0';
341 }
342 if (ch < '0' || ch > '7') {
343 pr_warn("silent value '%c' not in range (0,7)\n", ch);
344 return -EINVAL;
345 }
346 spin_lock_irqsave(&speakup_info.spinlock, flags);
347 if (ch&2) {
348 shut = 1;
349 spk_do_flush();
350 } else {
351 shut = 0;
352 }
353 if (ch&4)
354 shut |= 0x40;
355 if (ch&1)
356 spk_shut_up |= shut;
357 else
358 spk_shut_up &= ~shut;
359 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
360 return count;
361 }
362
363 /*
364 * This is called when a user reads the synth setting.
365 */
synth_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)366 static ssize_t synth_show(struct kobject *kobj, struct kobj_attribute *attr,
367 char *buf)
368 {
369 int rv;
370
371 if (!synth)
372 rv = sprintf(buf, "%s\n", "none");
373 else
374 rv = sprintf(buf, "%s\n", synth->name);
375 return rv;
376 }
377
378 /*
379 * This is called when a user requests to change synthesizers.
380 */
synth_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)381 static ssize_t synth_store(struct kobject *kobj, struct kobj_attribute *attr,
382 const char *buf, size_t count)
383 {
384 int len;
385 char new_synth_name[10];
386
387 len = strlen(buf);
388 if (len < 2 || len > 9)
389 return -EINVAL;
390 memcpy(new_synth_name, buf, len);
391 if (new_synth_name[len - 1] == '\n')
392 len--;
393 new_synth_name[len] = '\0';
394 spk_strlwr(new_synth_name);
395 if ((synth != NULL) && (!strcmp(new_synth_name, synth->name))) {
396 pr_warn("%s already in use\n", new_synth_name);
397 } else if (synth_init(new_synth_name) != 0) {
398 pr_warn("failed to init synth %s\n", new_synth_name);
399 return -ENODEV;
400 }
401 return count;
402 }
403
404 /*
405 * This is called when text is sent to the synth via the synth_direct file.
406 */
synth_direct_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)407 static ssize_t synth_direct_store(struct kobject *kobj,
408 struct kobj_attribute *attr, const char *buf, size_t count)
409 {
410 u_char tmp[256];
411 int len;
412 int bytes;
413 const char *ptr = buf;
414
415 if (!synth)
416 return -EPERM;
417
418 len = strlen(buf);
419 while (len > 0) {
420 bytes = min_t(size_t, len, 250);
421 strncpy(tmp, ptr, bytes);
422 tmp[bytes] = '\0';
423 string_unescape_any_inplace(tmp);
424 synth_printf("%s", tmp);
425 ptr += bytes;
426 len -= bytes;
427 }
428 return count;
429 }
430
431 /*
432 * This function is called when a user reads the version.
433 */
version_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)434 static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr,
435 char *buf)
436 {
437 char *cp;
438
439 cp = buf;
440 cp += sprintf(cp, "Speakup version %s\n", SPEAKUP_VERSION);
441 if (synth)
442 cp += sprintf(cp, "%s synthesizer driver version %s\n",
443 synth->name, synth->version);
444 return cp - buf;
445 }
446
447 /*
448 * This is called when a user reads the punctuation settings.
449 */
punc_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)450 static ssize_t punc_show(struct kobject *kobj, struct kobj_attribute *attr,
451 char *buf)
452 {
453 int i;
454 char *cp = buf;
455 struct st_var_header *p_header;
456 struct punc_var_t *var;
457 struct st_bits_data *pb;
458 short mask;
459 unsigned long flags;
460
461 p_header = spk_var_header_by_name(attr->attr.name);
462 if (!p_header) {
463 pr_warn("p_header is null, attr->attr.name is %s\n",
464 attr->attr.name);
465 return -EINVAL;
466 }
467
468 var = spk_get_punc_var(p_header->var_id);
469 if (!var) {
470 pr_warn("var is null, p_header->var_id is %i\n",
471 p_header->var_id);
472 return -EINVAL;
473 }
474
475 spin_lock_irqsave(&speakup_info.spinlock, flags);
476 pb = (struct st_bits_data *) &spk_punc_info[var->value];
477 mask = pb->mask;
478 for (i = 33; i < 128; i++) {
479 if (!(spk_chartab[i]&mask))
480 continue;
481 *cp++ = (char)i;
482 }
483 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
484 return cp-buf;
485 }
486
487 /*
488 * This is called when a user changes the punctuation settings.
489 */
punc_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)490 static ssize_t punc_store(struct kobject *kobj, struct kobj_attribute *attr,
491 const char *buf, size_t count)
492 {
493 int x;
494 struct st_var_header *p_header;
495 struct punc_var_t *var;
496 char punc_buf[100];
497 unsigned long flags;
498
499 x = strlen(buf);
500 if (x < 1 || x > 99)
501 return -EINVAL;
502
503 p_header = spk_var_header_by_name(attr->attr.name);
504 if (!p_header) {
505 pr_warn("p_header is null, attr->attr.name is %s\n",
506 attr->attr.name);
507 return -EINVAL;
508 }
509
510 var = spk_get_punc_var(p_header->var_id);
511 if (!var) {
512 pr_warn("var is null, p_header->var_id is %i\n",
513 p_header->var_id);
514 return -EINVAL;
515 }
516
517 memcpy(punc_buf, buf, x);
518
519 while (x && punc_buf[x - 1] == '\n')
520 x--;
521 punc_buf[x] = '\0';
522
523 spin_lock_irqsave(&speakup_info.spinlock, flags);
524
525 if (*punc_buf == 'd' || *punc_buf == 'r')
526 x = spk_set_mask_bits(NULL, var->value, 3);
527 else
528 x = spk_set_mask_bits(punc_buf, var->value, 3);
529
530 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
531 return count;
532 }
533
534 /*
535 * This function is called when a user reads one of the variable parameters.
536 */
spk_var_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)537 ssize_t spk_var_show(struct kobject *kobj, struct kobj_attribute *attr,
538 char *buf)
539 {
540 int rv = 0;
541 struct st_var_header *param;
542 struct var_t *var;
543 char *cp1;
544 char *cp;
545 char ch;
546 unsigned long flags;
547
548 param = spk_var_header_by_name(attr->attr.name);
549 if (!param)
550 return -EINVAL;
551
552 spin_lock_irqsave(&speakup_info.spinlock, flags);
553 var = (struct var_t *) param->data;
554 switch (param->var_type) {
555 case VAR_NUM:
556 case VAR_TIME:
557 if (var)
558 rv = sprintf(buf, "%i\n", var->u.n.value);
559 else
560 rv = sprintf(buf, "0\n");
561 break;
562 case VAR_STRING:
563 if (var) {
564 cp1 = buf;
565 *cp1++ = '"';
566 for (cp = (char *)param->p_val; (ch = *cp); cp++) {
567 if (ch >= ' ' && ch < '~')
568 *cp1++ = ch;
569 else
570 cp1 += sprintf(cp1, "\\x%02x", ch);
571 }
572 *cp1++ = '"';
573 *cp1++ = '\n';
574 *cp1 = '\0';
575 rv = cp1-buf;
576 } else {
577 rv = sprintf(buf, "\"\"\n");
578 }
579 break;
580 default:
581 rv = sprintf(buf, "Bad parameter %s, type %i\n",
582 param->name, param->var_type);
583 break;
584 }
585 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
586 return rv;
587 }
588 EXPORT_SYMBOL_GPL(spk_var_show);
589
590 /*
591 * Used to reset either default_pitch or default_vol.
592 */
spk_reset_default_value(char * header_name,int * synth_default_value,int idx)593 static inline void spk_reset_default_value(char *header_name,
594 int *synth_default_value, int idx)
595 {
596 struct st_var_header *param;
597
598 if (synth && synth_default_value) {
599 param = spk_var_header_by_name(header_name);
600 if (param) {
601 spk_set_num_var(synth_default_value[idx],
602 param, E_NEW_DEFAULT);
603 spk_set_num_var(0, param, E_DEFAULT);
604 pr_info("%s reset to default value\n", param->name);
605 }
606 }
607 }
608
609 /*
610 * This function is called when a user echos a value to one of the
611 * variable parameters.
612 */
spk_var_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)613 ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
614 const char *buf, size_t count)
615 {
616 struct st_var_header *param;
617 int ret;
618 int len;
619 char *cp;
620 struct var_t *var_data;
621 long value;
622 unsigned long flags;
623
624 param = spk_var_header_by_name(attr->attr.name);
625 if (!param)
626 return -EINVAL;
627 if (!param->data)
628 return 0;
629 ret = 0;
630 cp = (char *)buf;
631 string_unescape_any_inplace(cp);
632
633 spin_lock_irqsave(&speakup_info.spinlock, flags);
634 switch (param->var_type) {
635 case VAR_NUM:
636 case VAR_TIME:
637 if (*cp == 'd' || *cp == 'r' || *cp == '\0')
638 len = E_DEFAULT;
639 else if (*cp == '+' || *cp == '-')
640 len = E_INC;
641 else
642 len = E_SET;
643 if (kstrtol(cp, 10, &value) == 0)
644 ret = spk_set_num_var(value, param, len);
645 else
646 pr_warn("overflow or parsing error has occurred");
647 if (ret == -ERANGE) {
648 var_data = param->data;
649 pr_warn("value for %s out of range, expect %d to %d\n",
650 param->name,
651 var_data->u.n.low, var_data->u.n.high);
652 }
653
654 /*
655 * If voice was just changed, we might need to reset our default
656 * pitch and volume.
657 */
658 if (param->var_id == VOICE && synth &&
659 (ret == 0 || ret == -ERESTART)) {
660 var_data = param->data;
661 value = var_data->u.n.value;
662 spk_reset_default_value("pitch", synth->default_pitch,
663 value);
664 spk_reset_default_value("vol", synth->default_vol,
665 value);
666 }
667 break;
668 case VAR_STRING:
669 len = strlen(cp);
670 if ((len >= 1) && (cp[len - 1] == '\n'))
671 --len;
672 if ((len >= 2) && (cp[0] == '"') && (cp[len - 1] == '"')) {
673 ++cp;
674 len -= 2;
675 }
676 cp[len] = '\0';
677 ret = spk_set_string_var(cp, param, len);
678 if (ret == -E2BIG)
679 pr_warn("value too long for %s\n",
680 param->name);
681 break;
682 default:
683 pr_warn("%s unknown type %d\n",
684 param->name, (int)param->var_type);
685 break;
686 }
687 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
688
689 if (ret == -ERESTART)
690 pr_info("%s reset to default value\n", param->name);
691 return count;
692 }
693 EXPORT_SYMBOL_GPL(spk_var_store);
694
695 /*
696 * Functions for reading and writing lists of i18n messages. Incomplete.
697 */
698
message_show_helper(char * buf,enum msg_index_t first,enum msg_index_t last)699 static ssize_t message_show_helper(char *buf, enum msg_index_t first,
700 enum msg_index_t last)
701 {
702 size_t bufsize = PAGE_SIZE;
703 char *buf_pointer = buf;
704 int printed;
705 enum msg_index_t cursor;
706 int index = 0;
707 *buf_pointer = '\0'; /* buf_pointer always looking at a NUL byte. */
708
709 for (cursor = first; cursor <= last; cursor++, index++) {
710 if (bufsize <= 1)
711 break;
712 printed = scnprintf(buf_pointer, bufsize, "%d\t%s\n",
713 index, spk_msg_get(cursor));
714 buf_pointer += printed;
715 bufsize -= printed;
716 }
717
718 return buf_pointer - buf;
719 }
720
report_msg_status(int reset,int received,int used,int rejected,char * groupname)721 static void report_msg_status(int reset, int received, int used,
722 int rejected, char *groupname)
723 {
724 int len;
725 char buf[160];
726
727 if (reset) {
728 pr_info("i18n messages from group %s reset to defaults\n",
729 groupname);
730 } else if (received) {
731 len = snprintf(buf, sizeof(buf),
732 " updated %d of %d i18n messages from group %s\n",
733 used, received, groupname);
734 if (rejected)
735 snprintf(buf + (len - 1), sizeof(buf) - (len - 1),
736 " with %d reject%s\n",
737 rejected, rejected > 1 ? "s" : "");
738 printk(buf);
739 }
740 }
741
message_store_helper(const char * buf,size_t count,struct msg_group_t * group)742 static ssize_t message_store_helper(const char *buf, size_t count,
743 struct msg_group_t *group)
744 {
745 char *cp = (char *) buf;
746 char *end = cp + count;
747 char *linefeed = NULL;
748 char *temp = NULL;
749 ssize_t msg_stored = 0;
750 ssize_t retval = count;
751 size_t desc_length = 0;
752 unsigned long index = 0;
753 int received = 0;
754 int used = 0;
755 int rejected = 0;
756 int reset = 0;
757 enum msg_index_t firstmessage = group->start;
758 enum msg_index_t lastmessage = group->end;
759 enum msg_index_t curmessage;
760
761 while (cp < end) {
762
763 while ((cp < end) && (*cp == ' ' || *cp == '\t'))
764 cp++;
765
766 if (cp == end)
767 break;
768 if (strchr("dDrR", *cp)) {
769 reset = 1;
770 break;
771 }
772 received++;
773
774 linefeed = strchr(cp, '\n');
775 if (!linefeed) {
776 rejected++;
777 break;
778 }
779
780 if (!isdigit(*cp)) {
781 rejected++;
782 cp = linefeed + 1;
783 continue;
784 }
785
786 index = simple_strtoul(cp, &temp, 10);
787
788 while ((temp < linefeed) && (*temp == ' ' || *temp == '\t'))
789 temp++;
790
791 desc_length = linefeed - temp;
792 curmessage = firstmessage + index;
793
794 /*
795 * Note the check (curmessage < firstmessage). It is not
796 * redundant. Suppose that the user gave us an index
797 * equal to ULONG_MAX - 1. If firstmessage > 1, then
798 * firstmessage + index < firstmessage!
799 */
800
801 if ((curmessage < firstmessage) || (curmessage > lastmessage)) {
802 rejected++;
803 cp = linefeed + 1;
804 continue;
805 }
806
807 msg_stored = spk_msg_set(curmessage, temp, desc_length);
808 if (msg_stored < 0) {
809 retval = msg_stored;
810 if (msg_stored == -ENOMEM)
811 reset = 1;
812 break;
813 }
814
815 used++;
816
817 cp = linefeed + 1;
818 }
819
820 if (reset)
821 spk_reset_msg_group(group);
822
823 report_msg_status(reset, received, used, rejected, group->name);
824 return retval;
825 }
826
message_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)827 static ssize_t message_show(struct kobject *kobj,
828 struct kobj_attribute *attr, char *buf)
829 {
830 ssize_t retval = 0;
831 struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
832 unsigned long flags;
833
834 if (WARN_ON(!group))
835 return -EINVAL;
836
837 spin_lock_irqsave(&speakup_info.spinlock, flags);
838 retval = message_show_helper(buf, group->start, group->end);
839 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
840 return retval;
841 }
842
message_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)843 static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
844 const char *buf, size_t count)
845 {
846 struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
847
848 if (WARN_ON(!group))
849 return -EINVAL;
850
851 return message_store_helper(buf, count, group);
852 }
853
854 /*
855 * Declare the attributes.
856 */
857 static struct kobj_attribute keymap_attribute =
858 __ATTR_RW(keymap);
859 static struct kobj_attribute silent_attribute =
860 __ATTR_WO(silent);
861 static struct kobj_attribute synth_attribute =
862 __ATTR_RW(synth);
863 static struct kobj_attribute synth_direct_attribute =
864 __ATTR_WO(synth_direct);
865 static struct kobj_attribute version_attribute =
866 __ATTR_RO(version);
867
868 static struct kobj_attribute delimiters_attribute =
869 __ATTR(delimiters, S_IWUSR|S_IRUGO, punc_show, punc_store);
870 static struct kobj_attribute ex_num_attribute =
871 __ATTR(ex_num, S_IWUSR|S_IRUGO, punc_show, punc_store);
872 static struct kobj_attribute punc_all_attribute =
873 __ATTR(punc_all, S_IWUSR|S_IRUGO, punc_show, punc_store);
874 static struct kobj_attribute punc_most_attribute =
875 __ATTR(punc_most, S_IWUSR|S_IRUGO, punc_show, punc_store);
876 static struct kobj_attribute punc_some_attribute =
877 __ATTR(punc_some, S_IWUSR|S_IRUGO, punc_show, punc_store);
878 static struct kobj_attribute repeats_attribute =
879 __ATTR(repeats, S_IWUSR|S_IRUGO, punc_show, punc_store);
880
881 static struct kobj_attribute attrib_bleep_attribute =
882 __ATTR(attrib_bleep, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
883 static struct kobj_attribute bell_pos_attribute =
884 __ATTR(bell_pos, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
885 static struct kobj_attribute bleep_time_attribute =
886 __ATTR(bleep_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
887 static struct kobj_attribute bleeps_attribute =
888 __ATTR(bleeps, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
889 static struct kobj_attribute cursor_time_attribute =
890 __ATTR(cursor_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
891 static struct kobj_attribute key_echo_attribute =
892 __ATTR(key_echo, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
893 static struct kobj_attribute no_interrupt_attribute =
894 __ATTR(no_interrupt, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
895 static struct kobj_attribute punc_level_attribute =
896 __ATTR(punc_level, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
897 static struct kobj_attribute reading_punc_attribute =
898 __ATTR(reading_punc, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
899 static struct kobj_attribute say_control_attribute =
900 __ATTR(say_control, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
901 static struct kobj_attribute say_word_ctl_attribute =
902 __ATTR(say_word_ctl, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
903 static struct kobj_attribute spell_delay_attribute =
904 __ATTR(spell_delay, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
905
906 /*
907 * These attributes are i18n related.
908 */
909 static struct kobj_attribute announcements_attribute =
910 __ATTR(announcements, S_IWUSR|S_IRUGO, message_show, message_store);
911 static struct kobj_attribute characters_attribute =
912 __ATTR(characters, S_IWUSR|S_IRUGO, chars_chartab_show,
913 chars_chartab_store);
914 static struct kobj_attribute chartab_attribute =
915 __ATTR(chartab, S_IWUSR|S_IRUGO, chars_chartab_show,
916 chars_chartab_store);
917 static struct kobj_attribute ctl_keys_attribute =
918 __ATTR(ctl_keys, S_IWUSR|S_IRUGO, message_show, message_store);
919 static struct kobj_attribute colors_attribute =
920 __ATTR(colors, S_IWUSR|S_IRUGO, message_show, message_store);
921 static struct kobj_attribute formatted_attribute =
922 __ATTR(formatted, S_IWUSR|S_IRUGO, message_show, message_store);
923 static struct kobj_attribute function_names_attribute =
924 __ATTR(function_names, S_IWUSR|S_IRUGO, message_show, message_store);
925 static struct kobj_attribute key_names_attribute =
926 __ATTR(key_names, S_IWUSR|S_IRUGO, message_show, message_store);
927 static struct kobj_attribute states_attribute =
928 __ATTR(states, S_IWUSR|S_IRUGO, message_show, message_store);
929
930 /*
931 * Create groups of attributes so that we can create and destroy them all
932 * at once.
933 */
934 static struct attribute *main_attrs[] = {
935 &keymap_attribute.attr,
936 &silent_attribute.attr,
937 &synth_attribute.attr,
938 &synth_direct_attribute.attr,
939 &version_attribute.attr,
940 &delimiters_attribute.attr,
941 &ex_num_attribute.attr,
942 &punc_all_attribute.attr,
943 &punc_most_attribute.attr,
944 &punc_some_attribute.attr,
945 &repeats_attribute.attr,
946 &attrib_bleep_attribute.attr,
947 &bell_pos_attribute.attr,
948 &bleep_time_attribute.attr,
949 &bleeps_attribute.attr,
950 &cursor_time_attribute.attr,
951 &key_echo_attribute.attr,
952 &no_interrupt_attribute.attr,
953 &punc_level_attribute.attr,
954 &reading_punc_attribute.attr,
955 &say_control_attribute.attr,
956 &say_word_ctl_attribute.attr,
957 &spell_delay_attribute.attr,
958 NULL,
959 };
960
961 static struct attribute *i18n_attrs[] = {
962 &announcements_attribute.attr,
963 &characters_attribute.attr,
964 &chartab_attribute.attr,
965 &ctl_keys_attribute.attr,
966 &colors_attribute.attr,
967 &formatted_attribute.attr,
968 &function_names_attribute.attr,
969 &key_names_attribute.attr,
970 &states_attribute.attr,
971 NULL,
972 };
973
974 /*
975 * An unnamed attribute group will put all of the attributes directly in
976 * the kobject directory. If we specify a name, a subdirectory will be
977 * created for the attributes with the directory being the name of the
978 * attribute group.
979 */
980 static struct attribute_group main_attr_group = {
981 .attrs = main_attrs,
982 };
983
984 static struct attribute_group i18n_attr_group = {
985 .attrs = i18n_attrs,
986 .name = "i18n",
987 };
988
989 static struct kobject *accessibility_kobj;
990 struct kobject *speakup_kobj;
991
speakup_kobj_init(void)992 int speakup_kobj_init(void)
993 {
994 int retval;
995
996 /*
997 * Create a simple kobject with the name of "accessibility",
998 * located under /sys/
999 *
1000 * As this is a simple directory, no uevent will be sent to
1001 * userspace. That is why this function should not be used for
1002 * any type of dynamic kobjects, where the name and number are
1003 * not known ahead of time.
1004 */
1005 accessibility_kobj = kobject_create_and_add("accessibility", NULL);
1006 if (!accessibility_kobj) {
1007 retval = -ENOMEM;
1008 goto out;
1009 }
1010
1011 speakup_kobj = kobject_create_and_add("speakup", accessibility_kobj);
1012 if (!speakup_kobj) {
1013 retval = -ENOMEM;
1014 goto err_acc;
1015 }
1016
1017 /* Create the files associated with this kobject */
1018 retval = sysfs_create_group(speakup_kobj, &main_attr_group);
1019 if (retval)
1020 goto err_speakup;
1021
1022 retval = sysfs_create_group(speakup_kobj, &i18n_attr_group);
1023 if (retval)
1024 goto err_group;
1025
1026 goto out;
1027
1028 err_group:
1029 sysfs_remove_group(speakup_kobj, &main_attr_group);
1030 err_speakup:
1031 kobject_put(speakup_kobj);
1032 err_acc:
1033 kobject_put(accessibility_kobj);
1034 out:
1035 return retval;
1036 }
1037
speakup_kobj_exit(void)1038 void speakup_kobj_exit(void)
1039 {
1040 sysfs_remove_group(speakup_kobj, &i18n_attr_group);
1041 sysfs_remove_group(speakup_kobj, &main_attr_group);
1042 kobject_put(speakup_kobj);
1043 kobject_put(accessibility_kobj);
1044 }
1045