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/sysfs.h>
19 #include <linux/ctype.h>
20
21 #include "speakup.h"
22 #include "spk_priv.h"
23
24 /*
25 * This is called when a user reads the characters or chartab sys file.
26 */
chars_chartab_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)27 static ssize_t chars_chartab_show(struct kobject *kobj,
28 struct kobj_attribute *attr, char *buf)
29 {
30 int i;
31 int len = 0;
32 char *cp;
33 char *buf_pointer = buf;
34 size_t bufsize = PAGE_SIZE;
35 unsigned long flags;
36
37 spk_lock(flags);
38 *buf_pointer = '\0';
39 for (i = 0; i < 256; i++) {
40 if (bufsize <= 1)
41 break;
42 if (strcmp("characters", attr->attr.name) == 0) {
43 len = scnprintf(buf_pointer, bufsize, "%d\t%s\n",
44 i, characters[i]);
45 } else { /* show chartab entry */
46 if (IS_TYPE(i, B_CTL))
47 cp = "B_CTL";
48 else if (IS_TYPE(i, WDLM))
49 cp = "WDLM";
50 else if (IS_TYPE(i, A_PUNC))
51 cp = "A_PUNC";
52 else if (IS_TYPE(i, PUNC))
53 cp = "PUNC";
54 else if (IS_TYPE(i, NUM))
55 cp = "NUM";
56 else if (IS_TYPE(i, A_CAP))
57 cp = "A_CAP";
58 else if (IS_TYPE(i, ALPHA))
59 cp = "ALPHA";
60 else if (IS_TYPE(i, B_CAPSYM))
61 cp = "B_CAPSYM";
62 else if (IS_TYPE(i, B_SYM))
63 cp = "B_SYM";
64 else
65 cp = "0";
66 len =
67 scnprintf(buf_pointer, bufsize, "%d\t%s\n", i, cp);
68 }
69 bufsize -= len;
70 buf_pointer += len;
71 }
72 spk_unlock(flags);
73 return buf_pointer - buf;
74 }
75
76 /*
77 * Print informational messages or warnings after updating
78 * character descriptions or chartab entries.
79 */
report_char_chartab_status(int reset,int received,int used,int rejected,int do_characters)80 static void report_char_chartab_status(int reset, int received, int used,
81 int rejected, int do_characters)
82 {
83 char *object_type[] = {
84 "character class entries",
85 "character descriptions",
86 };
87 int len;
88 char buf[80];
89
90 if (reset) {
91 pr_info("%s reset to defaults\n", object_type[do_characters]);
92 } else if (received) {
93 len = snprintf(buf, sizeof(buf),
94 " updated %d of %d %s\n",
95 used, received, object_type[do_characters]);
96 if (rejected)
97 snprintf(buf + (len - 1), sizeof(buf) - (len - 1),
98 " with %d reject%s\n",
99 rejected, rejected > 1 ? "s" : "");
100 printk(buf);
101 }
102 }
103
104 /*
105 * This is called when a user changes the characters or chartab parameters.
106 */
chars_chartab_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)107 static ssize_t chars_chartab_store(struct kobject *kobj,
108 struct kobj_attribute *attr, const char *buf, size_t count)
109 {
110 char *cp = (char *) buf;
111 char *end = cp + count; /* the null at the end of the buffer */
112 char *linefeed = NULL;
113 char keyword[MAX_DESC_LEN + 1];
114 char *outptr = NULL; /* Will hold keyword or desc. */
115 char *temp = NULL;
116 char *desc = NULL;
117 ssize_t retval = count;
118 unsigned long flags;
119 unsigned long index = 0;
120 int charclass = 0;
121 int received = 0;
122 int used = 0;
123 int rejected = 0;
124 int reset = 0;
125 int do_characters = !strcmp(attr->attr.name, "characters");
126 size_t desc_length = 0;
127 int i;
128
129 spk_lock(flags);
130 while (cp < end) {
131
132 while ((cp < end) && (*cp == ' ' || *cp == '\t'))
133 cp++;
134
135 if (cp == end)
136 break;
137 if ((*cp == '\n') || strchr("dDrR", *cp)) {
138 reset = 1;
139 break;
140 }
141 received++;
142
143 linefeed = strchr(cp, '\n');
144 if (!linefeed) {
145 rejected++;
146 break;
147 }
148
149 if (!isdigit(*cp)) {
150 rejected++;
151 cp = linefeed + 1;
152 continue;
153 }
154
155 index = simple_strtoul(cp, &temp, 10);
156 if (index > 255) {
157 rejected++;
158 cp = linefeed + 1;
159 continue;
160 }
161
162 while ((temp < linefeed) && (*temp == ' ' || *temp == '\t'))
163 temp++;
164
165 desc_length = linefeed - temp;
166 if (desc_length > MAX_DESC_LEN) {
167 rejected++;
168 cp = linefeed + 1;
169 continue;
170 }
171 if (do_characters) {
172 desc = kmalloc(desc_length + 1, GFP_ATOMIC);
173 if (!desc) {
174 retval = -ENOMEM;
175 reset = 1; /* just reset on error. */
176 break;
177 }
178 outptr = desc;
179 } else {
180 outptr = keyword;
181 }
182
183 for (i = 0; i < desc_length; i++)
184 outptr[i] = temp[i];
185 outptr[desc_length] = '\0';
186
187 if (do_characters) {
188 if (characters[index] != default_chars[index])
189 kfree(characters[index]);
190 characters[index] = desc;
191 used++;
192 } else {
193 charclass = chartab_get_value(keyword);
194 if (charclass == 0) {
195 rejected++;
196 cp = linefeed + 1;
197 continue;
198 }
199 if (charclass != spk_chartab[index]) {
200 spk_chartab[index] = charclass;
201 used++;
202 }
203 }
204 cp = linefeed + 1;
205 }
206
207 if (reset) {
208 if (do_characters)
209 reset_default_chars();
210 else
211 reset_default_chartab();
212 }
213
214 spk_unlock(flags);
215 report_char_chartab_status(reset, received, used, rejected,
216 do_characters);
217 return retval;
218 }
219
220 /*
221 * This is called when a user reads the keymap parameter.
222 */
keymap_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)223 static ssize_t keymap_show(struct kobject *kobj, struct kobj_attribute *attr,
224 char *buf)
225 {
226 char *cp = buf;
227 int i;
228 int n;
229 int num_keys;
230 int nstates;
231 u_char *cp1;
232 u_char ch;
233 unsigned long flags;
234 spk_lock(flags);
235 cp1 = key_buf + SHIFT_TBL_SIZE;
236 num_keys = (int)(*cp1);
237 nstates = (int)cp1[1];
238 cp += sprintf(cp, "%d, %d, %d,\n", KEY_MAP_VER, num_keys, nstates);
239 cp1 += 2; /* now pointing at shift states */
240 /* dump num_keys+1 as first row is shift states + flags,
241 * each subsequent row is key + states */
242 for (n = 0; n <= num_keys; n++) {
243 for (i = 0; i <= nstates; i++) {
244 ch = *cp1++;
245 cp += sprintf(cp, "%d,", (int)ch);
246 *cp++ = (i < nstates) ? SPACE : '\n';
247 }
248 }
249 cp += sprintf(cp, "0, %d\n", KEY_MAP_VER);
250 spk_unlock(flags);
251 return (int)(cp-buf);
252 }
253
254 /*
255 * This is called when a user changes the keymap parameter.
256 */
keymap_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)257 static ssize_t keymap_store(struct kobject *kobj, struct kobj_attribute *attr,
258 const char *buf, size_t count)
259 {
260 int i;
261 ssize_t ret = count;
262 char *in_buff = NULL;
263 char *cp;
264 u_char *cp1;
265 unsigned long flags;
266
267 spk_lock(flags);
268 in_buff = kmemdup(buf, count + 1, GFP_ATOMIC);
269 if (!in_buff) {
270 spk_unlock(flags);
271 return -ENOMEM;
272 }
273 if (strchr("dDrR", *in_buff)) {
274 set_key_info(key_defaults, key_buf);
275 pr_info("keymap set to default values\n");
276 kfree(in_buff);
277 spk_unlock(flags);
278 return count;
279 }
280 if (in_buff[count - 1] == '\n')
281 in_buff[count - 1] = '\0';
282 cp = in_buff;
283 cp1 = (u_char *)in_buff;
284 for (i = 0; i < 3; i++) {
285 cp = s2uchar(cp, cp1);
286 cp1++;
287 }
288 i = (int)cp1[-2]+1;
289 i *= (int)cp1[-1]+1;
290 i += 2; /* 0 and last map ver */
291 if (cp1[-3] != KEY_MAP_VER || cp1[-1] > 10 ||
292 i+SHIFT_TBL_SIZE+4 >= sizeof(key_buf)) {
293 pr_warn("i %d %d %d %d\n", i,
294 (int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
295 kfree(in_buff);
296 spk_unlock(flags);
297 return -EINVAL;
298 }
299 while (--i >= 0) {
300 cp = s2uchar(cp, cp1);
301 cp1++;
302 if (!(*cp))
303 break;
304 }
305 if (i != 0 || cp1[-1] != KEY_MAP_VER || cp1[-2] != 0) {
306 ret = -EINVAL;
307 pr_warn("end %d %d %d %d\n", i,
308 (int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
309 } else {
310 if (set_key_info(in_buff, key_buf)) {
311 set_key_info(key_defaults, key_buf);
312 ret = -EINVAL;
313 pr_warn("set key failed\n");
314 }
315 }
316 kfree(in_buff);
317 spk_unlock(flags);
318 return ret;
319 }
320
321 /*
322 * This is called when a user changes the value of the silent parameter.
323 */
silent_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)324 static ssize_t silent_store(struct kobject *kobj, struct kobj_attribute *attr,
325 const char *buf, size_t count)
326 {
327 int len;
328 struct vc_data *vc = vc_cons[fg_console].d;
329 char ch = 0;
330 char shut;
331 unsigned long flags;
332
333 len = strlen(buf);
334 if (len > 0 && len < 3) {
335 ch = buf[0];
336 if (ch == '\n')
337 ch = '0';
338 }
339 if (ch < '0' || ch > '7') {
340 pr_warn("silent value '%c' not in range (0,7)\n", ch);
341 return -EINVAL;
342 }
343 spk_lock(flags);
344 if (ch&2) {
345 shut = 1;
346 do_flush();
347 } else {
348 shut = 0;
349 }
350 if (ch&4)
351 shut |= 0x40;
352 if (ch&1)
353 spk_shut_up |= shut;
354 else
355 spk_shut_up &= ~shut;
356 spk_unlock(flags);
357 return count;
358 }
359
360 /*
361 * This is called when a user reads the synth setting.
362 */
synth_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)363 static ssize_t synth_show(struct kobject *kobj, struct kobj_attribute *attr,
364 char *buf)
365 {
366 int rv;
367
368 if (synth == NULL)
369 rv = sprintf(buf, "%s\n", "none");
370 else
371 rv = sprintf(buf, "%s\n", synth->name);
372 return rv;
373 }
374
375 /*
376 * This is called when a user requests to change synthesizers.
377 */
synth_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)378 static ssize_t synth_store(struct kobject *kobj, struct kobj_attribute *attr,
379 const char *buf, size_t count)
380 {
381 int len;
382 char new_synth_name[10];
383
384 len = strlen(buf);
385 if (len < 2 || len > 9)
386 return -EINVAL;
387 strncpy(new_synth_name, buf, len);
388 if (new_synth_name[len - 1] == '\n')
389 len--;
390 new_synth_name[len] = '\0';
391 strlwr(new_synth_name);
392 if ((synth != NULL) && (!strcmp(new_synth_name, synth->name))) {
393 pr_warn("%s already in use\n", new_synth_name);
394 } else if (synth_init(new_synth_name) != 0) {
395 pr_warn("failed to init synth %s\n", new_synth_name);
396 return -ENODEV;
397 }
398 return count;
399 }
400
401 /*
402 * This is called when text is sent to the synth via the synth_direct file.
403 */
synth_direct_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)404 static ssize_t synth_direct_store(struct kobject *kobj,
405 struct kobj_attribute *attr, const char *buf, size_t count)
406 {
407 u_char tmp[256];
408 int len;
409 int bytes;
410 const char *ptr = buf;
411
412 if (!synth)
413 return -EPERM;
414
415 len = strlen(buf);
416 while (len > 0) {
417 bytes = min_t(size_t, len, 250);
418 strncpy(tmp, ptr, bytes);
419 tmp[bytes] = '\0';
420 xlate(tmp);
421 synth_printf("%s", tmp);
422 ptr += bytes;
423 len -= bytes;
424 }
425 return count;
426 }
427
428 /*
429 * This function is called when a user reads the version.
430 */
version_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)431 static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr,
432 char *buf)
433 {
434 char *cp;
435
436 cp = buf;
437 cp += sprintf(cp, "Speakup version %s\n", SPEAKUP_VERSION);
438 if (synth)
439 cp += sprintf(cp, "%s synthesizer driver version %s\n",
440 synth->name, synth->version);
441 return cp - buf;
442 }
443
444 /*
445 * This is called when a user reads the punctuation settings.
446 */
punc_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)447 static ssize_t punc_show(struct kobject *kobj, struct kobj_attribute *attr,
448 char *buf)
449 {
450 int i;
451 char *cp = buf;
452 struct st_var_header *p_header;
453 struct punc_var_t *var;
454 struct st_bits_data *pb;
455 short mask;
456 unsigned long flags;
457
458 p_header = var_header_by_name(attr->attr.name);
459 if (p_header == NULL) {
460 pr_warn("p_header is null, attr->attr.name is %s\n",
461 attr->attr.name);
462 return -EINVAL;
463 }
464
465 var = get_punc_var(p_header->var_id);
466 if (var == NULL) {
467 pr_warn("var is null, p_header->var_id is %i\n",
468 p_header->var_id);
469 return -EINVAL;
470 }
471
472 spk_lock(flags);
473 pb = (struct st_bits_data *) &punc_info[var->value];
474 mask = pb->mask;
475 for (i = 33; i < 128; i++) {
476 if (!(spk_chartab[i]&mask))
477 continue;
478 *cp++ = (char)i;
479 }
480 spk_unlock(flags);
481 return cp-buf;
482 }
483
484 /*
485 * This is called when a user changes the punctuation settings.
486 */
punc_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)487 static ssize_t punc_store(struct kobject *kobj, struct kobj_attribute *attr,
488 const char *buf, size_t count)
489 {
490 int x;
491 struct st_var_header *p_header;
492 struct punc_var_t *var;
493 char punc_buf[100];
494 unsigned long flags;
495
496 x = strlen(buf);
497 if (x < 1 || x > 99)
498 return -EINVAL;
499
500 p_header = var_header_by_name(attr->attr.name);
501 if (p_header == NULL) {
502 pr_warn("p_header is null, attr->attr.name is %s\n",
503 attr->attr.name);
504 return -EINVAL;
505 }
506
507 var = get_punc_var(p_header->var_id);
508 if (var == NULL) {
509 pr_warn("var is null, p_header->var_id is %i\n",
510 p_header->var_id);
511 return -EINVAL;
512 }
513
514 strncpy(punc_buf, buf, x);
515
516 while (x && punc_buf[x - 1] == '\n')
517 x--;
518 punc_buf[x] = '\0';
519
520 spk_lock(flags);
521
522 if (*punc_buf == 'd' || *punc_buf == 'r')
523 x = set_mask_bits(0, var->value, 3);
524 else
525 x = set_mask_bits(punc_buf, var->value, 3);
526
527 spk_unlock(flags);
528 return count;
529 }
530
531 /*
532 * This function is called when a user reads one of the variable parameters.
533 */
spk_var_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)534 ssize_t spk_var_show(struct kobject *kobj, struct kobj_attribute *attr,
535 char *buf)
536 {
537 int rv = 0;
538 struct st_var_header *param;
539 struct var_t *var;
540 char *cp1;
541 char *cp;
542 char ch;
543 unsigned long flags;
544
545 param = var_header_by_name(attr->attr.name);
546 if (param == NULL)
547 return -EINVAL;
548
549 spk_lock(flags);
550 var = (struct var_t *) param->data;
551 switch (param->var_type) {
552 case VAR_NUM:
553 case VAR_TIME:
554 if (var)
555 rv = sprintf(buf, "%i\n", var->u.n.value);
556 else
557 rv = sprintf(buf, "0\n");
558 break;
559 case VAR_STRING:
560 if (var) {
561 cp1 = buf;
562 *cp1++ = '"';
563 for (cp = (char *)param->p_val; (ch = *cp); cp++) {
564 if (ch >= ' ' && ch < '~')
565 *cp1++ = ch;
566 else
567 cp1 += sprintf(cp1, "\\""x%02x", ch);
568 }
569 *cp1++ = '"';
570 *cp1++ = '\n';
571 *cp1 = '\0';
572 rv = cp1-buf;
573 } else {
574 rv = sprintf(buf, "\"\"\n");
575 }
576 break;
577 default:
578 rv = sprintf(buf, "Bad parameter %s, type %i\n",
579 param->name, param->var_type);
580 break;
581 }
582 spk_unlock(flags);
583 return rv;
584 }
585 EXPORT_SYMBOL_GPL(spk_var_show);
586
587 /*
588 * This function is called when a user echos a value to one of the
589 * variable parameters.
590 */
spk_var_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)591 ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
592 const char *buf, size_t count)
593 {
594 struct st_var_header *param;
595 int ret;
596 int len;
597 char *cp;
598 struct var_t *var_data;
599 int value;
600 unsigned long flags;
601
602 param = var_header_by_name(attr->attr.name);
603 if (param == NULL)
604 return -EINVAL;
605 if (param->data == NULL)
606 return 0;
607 ret = 0;
608 cp = xlate((char *) buf);
609
610 spk_lock(flags);
611 switch (param->var_type) {
612 case VAR_NUM:
613 case VAR_TIME:
614 if (*cp == 'd' || *cp == 'r' || *cp == '\0')
615 len = E_DEFAULT;
616 else if (*cp == '+' || *cp == '-')
617 len = E_INC;
618 else
619 len = E_SET;
620 speakup_s2i(cp, &value);
621 ret = set_num_var(value, param, len);
622 if (ret == E_RANGE) {
623 var_data = param->data;
624 pr_warn("value for %s out of range, expect %d to %d\n",
625 attr->attr.name,
626 var_data->u.n.low, var_data->u.n.high);
627 }
628 break;
629 case VAR_STRING:
630 len = strlen(buf);
631 if ((len >= 1) && (buf[len - 1] == '\n'))
632 --len;
633 if ((len >= 2) && (buf[0] == '"') && (buf[len - 1] == '"')) {
634 ++buf;
635 len -= 2;
636 }
637 cp = (char *) buf;
638 cp[len] = '\0';
639 ret = set_string_var(buf, param, len);
640 if (ret == E_TOOLONG)
641 pr_warn("value too long for %s\n",
642 attr->attr.name);
643 break;
644 default:
645 pr_warn("%s unknown type %d\n",
646 param->name, (int)param->var_type);
647 break;
648 }
649 /*
650 * If voice was just changed, we might need to reset our default
651 * pitch and volume.
652 */
653 if (strcmp(attr->attr.name, "voice") == 0) {
654 if (synth && synth->default_pitch) {
655 param = var_header_by_name("pitch");
656 if (param) {
657 set_num_var(synth->default_pitch[value], param,
658 E_NEW_DEFAULT);
659 set_num_var(0, param, E_DEFAULT);
660 }
661 }
662 if (synth && synth->default_vol) {
663 param = var_header_by_name("vol");
664 if (param) {
665 set_num_var(synth->default_vol[value], param,
666 E_NEW_DEFAULT);
667 set_num_var(0, param, E_DEFAULT);
668 }
669 }
670 }
671 spk_unlock(flags);
672
673 if (ret == SET_DEFAULT)
674 pr_info("%s reset to default value\n", attr->attr.name);
675 return count;
676 }
677 EXPORT_SYMBOL_GPL(spk_var_store);
678
679 /*
680 * Functions for reading and writing lists of i18n messages. Incomplete.
681 */
682
message_show_helper(char * buf,enum msg_index_t first,enum msg_index_t last)683 static ssize_t message_show_helper(char *buf, enum msg_index_t first,
684 enum msg_index_t last)
685 {
686 size_t bufsize = PAGE_SIZE;
687 char *buf_pointer = buf;
688 int printed;
689 enum msg_index_t cursor;
690 int index = 0;
691 *buf_pointer = '\0'; /* buf_pointer always looking at a NUL byte. */
692
693 for (cursor = first; cursor <= last; cursor++, index++) {
694 if (bufsize <= 1)
695 break;
696 printed = scnprintf(buf_pointer, bufsize, "%d\t%s\n",
697 index, msg_get(cursor));
698 buf_pointer += printed;
699 bufsize -= printed;
700 }
701
702 return buf_pointer - buf;
703 }
704
report_msg_status(int reset,int received,int used,int rejected,char * groupname)705 static void report_msg_status(int reset, int received, int used,
706 int rejected, char *groupname)
707 {
708 int len;
709 char buf[160];
710
711 if (reset) {
712 pr_info("i18n messages from group %s reset to defaults\n",
713 groupname);
714 } else if (received) {
715 len = snprintf(buf, sizeof(buf),
716 " updated %d of %d i18n messages from group %s\n",
717 used, received, groupname);
718 if (rejected)
719 snprintf(buf + (len - 1), sizeof(buf) - (len - 1),
720 " with %d reject%s\n",
721 rejected, rejected > 1 ? "s" : "");
722 printk(buf);
723 }
724 }
725
message_store_helper(const char * buf,size_t count,struct msg_group_t * group)726 static ssize_t message_store_helper(const char *buf, size_t count,
727 struct msg_group_t *group)
728 {
729 char *cp = (char *) buf;
730 char *end = cp + count;
731 char *linefeed = NULL;
732 char *temp = NULL;
733 ssize_t msg_stored = 0;
734 ssize_t retval = count;
735 size_t desc_length = 0;
736 unsigned long index = 0;
737 int received = 0;
738 int used = 0;
739 int rejected = 0;
740 int reset = 0;
741 enum msg_index_t firstmessage = group->start;
742 enum msg_index_t lastmessage = group->end;
743 enum msg_index_t curmessage;
744
745 while (cp < end) {
746
747 while ((cp < end) && (*cp == ' ' || *cp == '\t'))
748 cp++;
749
750 if (cp == end)
751 break;
752 if (strchr("dDrR", *cp)) {
753 reset = 1;
754 break;
755 }
756 received++;
757
758 linefeed = strchr(cp, '\n');
759 if (!linefeed) {
760 rejected++;
761 break;
762 }
763
764 if (!isdigit(*cp)) {
765 rejected++;
766 cp = linefeed + 1;
767 continue;
768 }
769
770 index = simple_strtoul(cp, &temp, 10);
771
772 while ((temp < linefeed) && (*temp == ' ' || *temp == '\t'))
773 temp++;
774
775 desc_length = linefeed - temp;
776 curmessage = firstmessage + index;
777
778 /*
779 * Note the check (curmessage < firstmessage). It is not
780 * redundant. Suppose that the user gave us an index
781 * equal to ULONG_MAX - 1. If firstmessage > 1, then
782 * firstmessage + index < firstmessage!
783 */
784
785 if ((curmessage < firstmessage) || (curmessage > lastmessage)) {
786 rejected++;
787 cp = linefeed + 1;
788 continue;
789 }
790
791 msg_stored = msg_set(curmessage, temp, desc_length);
792 if (msg_stored < 0) {
793 retval = msg_stored;
794 if (msg_stored == -ENOMEM)
795 reset = 1;
796 break;
797 } else {
798 used++;
799 }
800
801 cp = linefeed + 1;
802 }
803
804 if (reset)
805 reset_msg_group(group);
806
807 report_msg_status(reset, received, used, rejected, group->name);
808 return retval;
809 }
810
message_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)811 static ssize_t message_show(struct kobject *kobj,
812 struct kobj_attribute *attr, char *buf)
813 {
814 ssize_t retval = 0;
815 struct msg_group_t *group = find_msg_group(attr->attr.name);
816 unsigned long flags;
817
818 BUG_ON(!group);
819 spk_lock(flags);
820 retval = message_show_helper(buf, group->start, group->end);
821 spk_unlock(flags);
822 return retval;
823 }
824
message_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)825 static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
826 const char *buf, size_t count)
827 {
828 ssize_t retval = 0;
829 struct msg_group_t *group = find_msg_group(attr->attr.name);
830
831 BUG_ON(!group);
832 retval = message_store_helper(buf, count, group);
833 return retval;
834 }
835
836 /*
837 * Declare the attributes.
838 */
839 static struct kobj_attribute keymap_attribute =
840 __ATTR(keymap, ROOT_W, keymap_show, keymap_store);
841 static struct kobj_attribute silent_attribute =
842 __ATTR(silent, USER_W, NULL, silent_store);
843 static struct kobj_attribute synth_attribute =
844 __ATTR(synth, USER_RW, synth_show, synth_store);
845 static struct kobj_attribute synth_direct_attribute =
846 __ATTR(synth_direct, USER_W, NULL, synth_direct_store);
847 static struct kobj_attribute version_attribute =
848 __ATTR_RO(version);
849
850 static struct kobj_attribute delimiters_attribute =
851 __ATTR(delimiters, USER_RW, punc_show, punc_store);
852 static struct kobj_attribute ex_num_attribute =
853 __ATTR(ex_num, USER_RW, punc_show, punc_store);
854 static struct kobj_attribute punc_all_attribute =
855 __ATTR(punc_all, USER_RW, punc_show, punc_store);
856 static struct kobj_attribute punc_most_attribute =
857 __ATTR(punc_most, USER_RW, punc_show, punc_store);
858 static struct kobj_attribute punc_some_attribute =
859 __ATTR(punc_some, USER_RW, punc_show, punc_store);
860 static struct kobj_attribute repeats_attribute =
861 __ATTR(repeats, USER_RW, punc_show, punc_store);
862
863 static struct kobj_attribute attrib_bleep_attribute =
864 __ATTR(attrib_bleep, USER_RW, spk_var_show, spk_var_store);
865 static struct kobj_attribute bell_pos_attribute =
866 __ATTR(bell_pos, USER_RW, spk_var_show, spk_var_store);
867 static struct kobj_attribute bleep_time_attribute =
868 __ATTR(bleep_time, USER_RW, spk_var_show, spk_var_store);
869 static struct kobj_attribute bleeps_attribute =
870 __ATTR(bleeps, USER_RW, spk_var_show, spk_var_store);
871 static struct kobj_attribute cursor_time_attribute =
872 __ATTR(cursor_time, USER_RW, spk_var_show, spk_var_store);
873 static struct kobj_attribute key_echo_attribute =
874 __ATTR(key_echo, USER_RW, spk_var_show, spk_var_store);
875 static struct kobj_attribute no_interrupt_attribute =
876 __ATTR(no_interrupt, USER_RW, spk_var_show, spk_var_store);
877 static struct kobj_attribute punc_level_attribute =
878 __ATTR(punc_level, USER_RW, spk_var_show, spk_var_store);
879 static struct kobj_attribute reading_punc_attribute =
880 __ATTR(reading_punc, USER_RW, spk_var_show, spk_var_store);
881 static struct kobj_attribute say_control_attribute =
882 __ATTR(say_control, USER_RW, spk_var_show, spk_var_store);
883 static struct kobj_attribute say_word_ctl_attribute =
884 __ATTR(say_word_ctl, USER_RW, spk_var_show, spk_var_store);
885 static struct kobj_attribute spell_delay_attribute =
886 __ATTR(spell_delay, USER_RW, spk_var_show, spk_var_store);
887
888 /*
889 * These attributes are i18n related.
890 */
891 static struct kobj_attribute announcements_attribute =
892 __ATTR(announcements, USER_RW, message_show, message_store);
893 static struct kobj_attribute characters_attribute =
894 __ATTR(characters, USER_RW, chars_chartab_show, chars_chartab_store);
895 static struct kobj_attribute chartab_attribute =
896 __ATTR(chartab, USER_RW, chars_chartab_show, chars_chartab_store);
897 static struct kobj_attribute ctl_keys_attribute =
898 __ATTR(ctl_keys, USER_RW, message_show, message_store);
899 static struct kobj_attribute colors_attribute =
900 __ATTR(colors, USER_RW, message_show, message_store);
901 static struct kobj_attribute formatted_attribute =
902 __ATTR(formatted, USER_RW, message_show, message_store);
903 static struct kobj_attribute function_names_attribute =
904 __ATTR(function_names, USER_RW, message_show, message_store);
905 static struct kobj_attribute key_names_attribute =
906 __ATTR(key_names, USER_RW, message_show, message_store);
907 static struct kobj_attribute states_attribute =
908 __ATTR(states, USER_RW, message_show, message_store);
909
910 /*
911 * Create groups of attributes so that we can create and destroy them all
912 * at once.
913 */
914 static struct attribute *main_attrs[] = {
915 &keymap_attribute.attr,
916 &silent_attribute.attr,
917 &synth_attribute.attr,
918 &synth_direct_attribute.attr,
919 &version_attribute.attr,
920 &delimiters_attribute.attr,
921 &ex_num_attribute.attr,
922 &punc_all_attribute.attr,
923 &punc_most_attribute.attr,
924 &punc_some_attribute.attr,
925 &repeats_attribute.attr,
926 &attrib_bleep_attribute.attr,
927 &bell_pos_attribute.attr,
928 &bleep_time_attribute.attr,
929 &bleeps_attribute.attr,
930 &cursor_time_attribute.attr,
931 &key_echo_attribute.attr,
932 &no_interrupt_attribute.attr,
933 &punc_level_attribute.attr,
934 &reading_punc_attribute.attr,
935 &say_control_attribute.attr,
936 &say_word_ctl_attribute.attr,
937 &spell_delay_attribute.attr,
938 NULL,
939 };
940
941 static struct attribute *i18n_attrs[] = {
942 &announcements_attribute.attr,
943 &characters_attribute.attr,
944 &chartab_attribute.attr,
945 &ctl_keys_attribute.attr,
946 &colors_attribute.attr,
947 &formatted_attribute.attr,
948 &function_names_attribute.attr,
949 &key_names_attribute.attr,
950 &states_attribute.attr,
951 NULL,
952 };
953
954 /*
955 * An unnamed attribute group will put all of the attributes directly in
956 * the kobject directory. If we specify a name, a subdirectory will be
957 * created for the attributes with the directory being the name of the
958 * attribute group.
959 */
960 static struct attribute_group main_attr_group = {
961 .attrs = main_attrs,
962 };
963
964 static struct attribute_group i18n_attr_group = {
965 .attrs = i18n_attrs,
966 .name = "i18n",
967 };
968
969 static struct kobject *accessibility_kobj;
970 struct kobject *speakup_kobj;
971
speakup_kobj_init(void)972 int speakup_kobj_init(void)
973 {
974 int retval;
975
976 /*
977 * Create a simple kobject with the name of "accessibility",
978 * located under /sys/
979 *
980 * As this is a simple directory, no uevent will be sent to
981 * userspace. That is why this function should not be used for
982 * any type of dynamic kobjects, where the name and number are
983 * not known ahead of time.
984 */
985 accessibility_kobj = kobject_create_and_add("accessibility", NULL);
986 if (!accessibility_kobj) {
987 retval = -ENOMEM;
988 goto out;
989 }
990
991 speakup_kobj = kobject_create_and_add("speakup", accessibility_kobj);
992 if (!speakup_kobj) {
993 retval = -ENOMEM;
994 goto err_acc;
995 }
996
997 /* Create the files associated with this kobject */
998 retval = sysfs_create_group(speakup_kobj, &main_attr_group);
999 if (retval)
1000 goto err_speakup;
1001
1002 retval = sysfs_create_group(speakup_kobj, &i18n_attr_group);
1003 if (retval)
1004 goto err_group;
1005
1006 goto out;
1007
1008 err_group:
1009 sysfs_remove_group(speakup_kobj, &main_attr_group);
1010 err_speakup:
1011 kobject_put(speakup_kobj);
1012 err_acc:
1013 kobject_put(accessibility_kobj);
1014 out:
1015 return retval;
1016 }
1017
speakup_kobj_exit(void)1018 void speakup_kobj_exit(void)
1019 {
1020 sysfs_remove_group(speakup_kobj, &i18n_attr_group);
1021 sysfs_remove_group(speakup_kobj, &main_attr_group);
1022 kobject_put(speakup_kobj);
1023 kobject_put(accessibility_kobj);
1024 }
1025