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staging: speakup: fix leaks of sysfs groups
[net-next-2.6.git] / drivers / staging / speakup / kobjects.c
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c6e3fd22
WH		 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 */
27static 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 */
80static 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]);
f1c6b7fb 92 } else if (received) {
c6e3fd22 93 len = snprintf(buf, sizeof(buf),
f1c6b7fb
WH		 94 " updated %d of %d %s\n",
95 used, received, object_type[do_characters]);
c6e3fd22
WH		 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 */
107static 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
f1c6b7fb 149 if (!isdigit(*cp)) {
c6e3fd22
WH		 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);
f1c6b7fb 173 if (!desc) {
c6e3fd22
WH		 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);
f1c6b7fb
WH		 215 report_char_chartab_status(reset, received, used, rejected,
216 do_characters);
c6e3fd22
WH		 217 return retval;
218}
219
220/*
221 * This is called when a user reads the keymap parameter.
222 */
223static 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 */
f1c6b7fb
WH		 240 /* dump num_keys+1 as first row is shift states + flags,
241 * each subsequent row is key + states */
c6e3fd22
WH		 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 */
257static 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 = kmalloc(count + 1, GFP_ATOMIC);
f1c6b7fb 269 if (!in_buff) {
c6e3fd22
WH		 270 spk_unlock(flags);
271 return -ENOMEM;
272 }
273 memcpy(in_buff, buf, count + 1);
274 if (strchr("dDrR", *in_buff)) {
275 set_key_info(key_defaults, key_buf);
276 pr_info("keymap set to default values\n");
277 kfree(in_buff);
278 spk_unlock(flags);
279 return count;
280 }
281 if (in_buff[count - 1] == '\n')
f1c6b7fb 282 in_buff[count - 1] = '\0';
c6e3fd22
WH		 283 cp = in_buff;
284 cp1 = (u_char *)in_buff;
285 for (i = 0; i < 3; i++) {
286 cp = s2uchar(cp, cp1);
287 cp1++;
288 }
289 i = (int)cp1[-2]+1;
290 i *= (int)cp1[-1]+1;
291 i += 2; /* 0 and last map ver */
292 if (cp1[-3] != KEY_MAP_VER || cp1[-1] > 10 ||
293 i+SHIFT_TBL_SIZE+4 >= sizeof(key_buf)) {
294 pr_warn("i %d %d %d %d\n", i,
295 (int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
296 kfree(in_buff);
297 spk_unlock(flags);
298 return -EINVAL;
299 }
300 while (--i >= 0) {
301 cp = s2uchar(cp, cp1);
302 cp1++;
303 if (!(*cp))
304 break;
305 }
306 if (i != 0 || cp1[-1] != KEY_MAP_VER || cp1[-2] != 0) {
307 ret = -EINVAL;
308 pr_warn("end %d %d %d %d\n", i,
309 (int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
310 } else {
311 if (set_key_info(in_buff, key_buf)) {
312 set_key_info(key_defaults, key_buf);
313 ret = -EINVAL;
314 pr_warn("set key failed\n");
315 }
316 }
317 kfree(in_buff);
318 spk_unlock(flags);
319 return ret;
320}
321
322/*
323 * This is called when a user changes the value of the silent parameter.
324 */
325static ssize_t silent_store(struct kobject *kobj, struct kobj_attribute *attr,
326 const char *buf, size_t count)
327{
328 int len;
329 struct vc_data *vc = vc_cons[fg_console].d;
330 char ch = 0;
331 char shut;
332 unsigned long flags;
333
334 len = strlen(buf);
335 if (len > 0 || len < 3) {
336 ch = buf[0];
337 if (ch == '\n')
338 ch = '0';
339 }
340 if (ch < '0' || ch > '7') {
341 pr_warn("silent value '%c' not in range (0,7)\n", ch);
342 return -EINVAL;
343 }
344 spk_lock(flags);
345 if (ch&2) {
346 shut = 1;
347 do_flush();
348 } else {
349 shut = 0;
350 }
351 if (ch&4)
352 shut |= 0x40;
353 if (ch&1)
354 spk_shut_up |= shut;
355 else
356 spk_shut_up &= ~shut;
357 spk_unlock(flags);
358 return count;
359}
360
361/*
362 * This is called when a user reads the synth setting.
363 */
364static ssize_t synth_show(struct kobject *kobj, struct kobj_attribute *attr,
365 char *buf)
366{
367 int rv;
368
369 if (synth == NULL)
370 rv = sprintf(buf, "%s\n", "none");
371 else
372 rv = sprintf(buf, "%s\n", synth->name);
373 return rv;
374}
375
376/*
377 * This is called when a user requests to change synthesizers.
378 */
379static ssize_t synth_store(struct kobject *kobj, struct kobj_attribute *attr,
380 const char *buf, size_t count)
381{
382 int len;
383 char new_synth_name[10];
384
385 len = strlen(buf);
386 if (len < 2 || len > 9)
387 return -EINVAL;
388 strncpy(new_synth_name, buf, len);
389 if (new_synth_name[len - 1] == '\n')
390 len--;
391 new_synth_name[len] = '\0';
392 strlwr(new_synth_name);
393 if ((synth != NULL) && (!strcmp(new_synth_name, synth->name))) {
394 pr_warn("%s already in use\n", new_synth_name);
395 } else if (synth_init(new_synth_name) != 0) {
396 pr_warn("failed to init synth %s\n", new_synth_name);
397 return -ENODEV;
398 }
399 return count;
400}
401
402/*
403 * This is called when text is sent to the synth via the synth_direct file.
404 */
f1c6b7fb
WH		 405static ssize_t synth_direct_store(struct kobject *kobj,
406 struct kobj_attribute *attr, const char *buf, size_t count)
c6e3fd22
WH		 407{
408 u_char tmp[256];
409 int len;
410 int bytes;
411 const char *ptr = buf;
412
f1c6b7fb 413 if (!synth)
c6e3fd22
WH		 414 return -EPERM;
415
416 len = strlen(buf);
417 while (len > 0) {
418 bytes = min_t(size_t, len, 250);
419 strncpy(tmp, ptr, bytes);
420 tmp[bytes] = '\0';
421 xlate(tmp);
422 synth_printf("%s", tmp);
423 ptr += bytes;
424 len -= bytes;
425 }
426 return count;
427}
428
429/*
430 * This function is called when a user reads the version.
431 */
432static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr,
433 char *buf)
434{
435 char *cp;
436
437 cp = buf;
438 cp += sprintf(cp, "Speakup version %s\n", SPEAKUP_VERSION);
439 if (synth)
440 cp += sprintf(cp, "%s synthesizer driver version %s\n",
441 synth->name, synth->version);
442 return cp - buf;
443}
444
445/*
446 * This is called when a user reads the punctuation settings.
447 */
448static ssize_t punc_show(struct kobject *kobj, struct kobj_attribute *attr,
449 char *buf)
450{
451 int i;
452 char *cp = buf;
453 struct st_var_header *p_header;
454 struct punc_var_t *var;
455 struct st_bits_data *pb;
456 short mask;
457 unsigned long flags;
458
459 p_header = var_header_by_name(attr->attr.name);
460 if (p_header == NULL) {
f1c6b7fb
WH		 461 pr_warn("p_header is null, attr->attr.name is %s\n",
462 attr->attr.name);
c6e3fd22
WH		 463 return -EINVAL;
464 }
465
466 var = get_punc_var(p_header->var_id);
467 if (var == NULL) {
468 pr_warn("var is null, p_header->var_id is %i\n",
469 p_header->var_id);
470 return -EINVAL;
471 }
472
473 spk_lock(flags);
474 pb = (struct st_bits_data *) &punc_info[var->value];
475 mask = pb->mask;
476 for (i = 33; i < 128; i++) {
477 if (!(spk_chartab[i]&mask))
478 continue;
479 *cp++ = (char)i;
480 }
481 spk_unlock(flags);
482 return cp-buf;
483}
484
485/*
486 * This is called when a user changes the punctuation settings.
487 */
488static ssize_t punc_store(struct kobject *kobj, struct kobj_attribute *attr,
489 const char *buf, size_t count)
490{
491 int x;
492 struct st_var_header *p_header;
493 struct punc_var_t *var;
494 char punc_buf[100];
495 unsigned long flags;
496
497 x = strlen(buf);
498 if (x < 1 || x > 99)
499 return -EINVAL;
500
501 p_header = var_header_by_name(attr->attr.name);
502 if (p_header == NULL) {
f1c6b7fb
WH		 503 pr_warn("p_header is null, attr->attr.name is %s\n",
504 attr->attr.name);
c6e3fd22
WH		 505 return -EINVAL;
506 }
507
508 var = get_punc_var(p_header->var_id);
509 if (var == NULL) {
510 pr_warn("var is null, p_header->var_id is %i\n",
511 p_header->var_id);
512 return -EINVAL;
513 }
514
515 strncpy(punc_buf, buf, x);
516
517 while (x && punc_buf[x - 1] == '\n')
518 x--;
519 punc_buf[x] = '\0';
520
521 spk_lock(flags);
522
523 if (*punc_buf == 'd' || *punc_buf == 'r')
524 x = set_mask_bits(0, var->value, 3);
525 else
526 x = set_mask_bits(punc_buf, var->value, 3);
527
528 spk_unlock(flags);
529 return count;
530}
531
532/*
533 * This function is called when a user reads one of the variable parameters.
534 */
535ssize_t spk_var_show(struct kobject *kobj, struct kobj_attribute *attr,
536 char *buf)
537{
538 int rv = 0;
539 struct st_var_header *param;
540 struct var_t *var;
541 char *cp1;
542 char *cp;
543 char ch;
544 unsigned long flags;
545
546 param = var_header_by_name(attr->attr.name);
547 if (param == NULL)
548 return -EINVAL;
549
550 spk_lock(flags);
551 var = (struct var_t *) param->data;
552 switch (param->var_type) {
553 case VAR_NUM:
554 case VAR_TIME:
555 if (var)
556 rv = sprintf(buf, "%i\n", var->u.n.value);
557 else
558 rv = sprintf(buf, "0\n");
559 break;
560 case VAR_STRING:
561 if (var) {
562 cp1 = buf;
563 *cp1++ = '"';
564 for (cp = (char *)param->p_val; (ch = *cp); cp++) {
565 if (ch >= ' ' && ch < '~')
566 *cp1++ = ch;
567 else
568 cp1 += sprintf(cp1, "\\""x%02x", ch);
569 }
570 *cp1++ = '"';
571 *cp1++ = '\n';
572 *cp1 = '\0';
573 rv = cp1-buf;
574 } else {
575 rv = sprintf(buf, "\"\"\n");
576 }
577 break;
578 default:
579 rv = sprintf(buf, "Bad parameter %s, type %i\n",
580 param->name, param->var_type);
581 break;
582 }
583 spk_unlock(flags);
584 return rv;
585}
586EXPORT_SYMBOL_GPL(spk_var_show);
587
588/*
589 * This function is called when a user echos a value to one of the
590 * variable parameters.
591 */
592ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
593 const char *buf, size_t count)
594{
595 struct st_var_header *param;
596 int ret;
597 int len;
598 char *cp;
599 struct var_t *var_data;
600 int value;
601 unsigned long flags;
602
603 param = var_header_by_name(attr->attr.name);
604 if (param == NULL)
605 return -EINVAL;
606 if (param->data == NULL)
607 return 0;
608 ret = 0;
609 cp = xlate((char *) buf);
610
611 spk_lock(flags);
612 switch (param->var_type) {
613 case VAR_NUM:
614 case VAR_TIME:
615 if (*cp == 'd' || *cp == 'r' || *cp == '\0')
616 len = E_DEFAULT;
617 else if (*cp == '+' || *cp == '-')
618 len = E_INC;
619 else
620 len = E_SET;
621 speakup_s2i(cp, &value);
622 ret = set_num_var(value, param, len);
623 if (ret == E_RANGE) {
624 var_data = param->data;
625 pr_warn("value for %s out of range, expect %d to %d\n",
626 attr->attr.name,
627 var_data->u.n.low, var_data->u.n.high);
628 }
629 break;
630 case VAR_STRING:
631 len = strlen(buf);
632 if ((len >= 1) && (buf[len - 1] == '\n'))
633 --len;
634 if ((len >= 2) && (buf[0] == '"') && (buf[len - 1] == '"')) {
635 ++buf;
636 len -= 2;
637 }
638 cp = (char *) buf;
639 cp[len] = '\0';
640 ret = set_string_var(buf, param, len);
641 if (ret == E_TOOLONG)
642 pr_warn("value too long for %s\n",
643 attr->attr.name);
644 break;
645 default:
646 pr_warn("%s unknown type %d\n",
647 param->name, (int)param->var_type);
648 break;
649 }
650 /*
651 * If voice was just changed, we might need to reset our default
652 * pitch and volume.
653 */
654 if (strcmp(attr->attr.name, "voice") == 0) {
655 if (synth && synth->default_pitch) {
656 param = var_header_by_name("pitch");
657 if (param) {
f1c6b7fb
WH		 658 set_num_var(synth->default_pitch[value], param,
659 E_NEW_DEFAULT);
c6e3fd22
WH		 660 set_num_var(0, param, E_DEFAULT);
661 }
662 }
663 if (synth && synth->default_vol) {
664 param = var_header_by_name("vol");
665 if (param) {
f1c6b7fb
WH		 666 set_num_var(synth->default_vol[value], param,
667 E_NEW_DEFAULT);
c6e3fd22
WH		 668 set_num_var(0, param, E_DEFAULT);
669 }
670 }
671 }
672 spk_unlock(flags);
673
674 if (ret == SET_DEFAULT)
675 pr_info("%s reset to default value\n", attr->attr.name);
676 return count;
677}
678EXPORT_SYMBOL_GPL(spk_var_store);
679
680/*
681 * Functions for reading and writing lists of i18n messages. Incomplete.
682 */
683
684static ssize_t message_show_helper(char *buf, enum msg_index_t first,
685 enum msg_index_t last)
686{
687 size_t bufsize = PAGE_SIZE;
688 char *buf_pointer = buf;
689 int printed;
690 enum msg_index_t cursor;
691 int index = 0;
692 *buf_pointer = '\0'; /* buf_pointer always looking at a NUL byte. */
693
694 for (cursor = first; cursor <= last; cursor++, index++) {
695 if (bufsize <= 1)
696 break;
697 printed = scnprintf(buf_pointer, bufsize, "%d\t%s\n",
698 index, msg_get(cursor));
699 buf_pointer += printed;
700 bufsize -= printed;
701 }
702
703 return buf_pointer - buf;
704}
705
706static void report_msg_status(int reset, int received, int used,
707 int rejected, char *groupname)
708{
709 int len;
710 char buf[160];
711
712 if (reset) {
713 pr_info("i18n messages from group %s reset to defaults\n",
714 groupname);
f1c6b7fb 715 } else if (received) {
c6e3fd22
WH		 716 len = snprintf(buf, sizeof(buf),
717 " updated %d of %d i18n messages from group %s\n",
718 used, received, groupname);
719 if (rejected)
720 snprintf(buf + (len - 1), sizeof(buf) - (len - 1),
721 " with %d reject%s\n",
722 rejected, rejected > 1 ? "s" : "");
723 printk(buf);
724 }
725}
726
727static ssize_t message_store_helper(const char *buf, size_t count,
728 struct msg_group_t *group)
729{
730 char *cp = (char *) buf;
731 char *end = cp + count;
732 char *linefeed = NULL;
733 char *temp = NULL;
734 ssize_t msg_stored = 0;
735 ssize_t retval = count;
736 size_t desc_length = 0;
737 unsigned long index = 0;
738 int received = 0;
739 int used = 0;
740 int rejected = 0;
741 int reset = 0;
742 enum msg_index_t firstmessage = group->start;
743 enum msg_index_t lastmessage = group->end;
744 enum msg_index_t curmessage;
745
746 while (cp < end) {
747
748 while ((cp < end) && (*cp == ' ' || *cp == '\t'))
749 cp++;
750
751 if (cp == end)
752 break;
753 if (strchr("dDrR", *cp)) {
754 reset = 1;
755 break;
756 }
757 received++;
758
759 linefeed = strchr(cp, '\n');
760 if (!linefeed) {
761 rejected++;
762 break;
763 }
764
f1c6b7fb 765 if (!isdigit(*cp)) {
c6e3fd22
WH		 766 rejected++;
767 cp = linefeed + 1;
768 continue;
769 }
770
771 index = simple_strtoul(cp, &temp, 10);
772
773 while ((temp < linefeed) && (*temp == ' ' || *temp == '\t'))
774 temp++;
775
776 desc_length = linefeed - temp;
777 curmessage = firstmessage + index;
778
779 /*
780 * Note the check (curmessage < firstmessage). It is not
781 * redundant. Suppose that the user gave us an index
782 * equal to ULONG_MAX - 1. If firstmessage > 1, then
783 * firstmessage + index < firstmessage!
784 */
785
786 if ((curmessage < firstmessage) || (curmessage > lastmessage)) {
787 rejected++;
788 cp = linefeed + 1;
789 continue;
790 }
791
792 msg_stored = msg_set(curmessage, temp, desc_length);
793 if (msg_stored < 0) {
794 retval = msg_stored;
795 if (msg_stored == -ENOMEM)
796 reset = 1;
797 break;
798 } else {
799 used++;
800 }
801
802 cp = linefeed + 1;
803 }
804
805 if (reset)
806 reset_msg_group(group);
807
808 report_msg_status(reset, received, used, rejected, group->name);
809 return retval;
810}
811
812static ssize_t message_show(struct kobject *kobj,
813 struct kobj_attribute *attr, char *buf)
814{
815 ssize_t retval = 0;
816 struct msg_group_t *group = find_msg_group(attr->attr.name);
817 unsigned long flags;
818
f1c6b7fb 819 BUG_ON(!group);
c6e3fd22
WH		 820 spk_lock(flags);
821 retval = message_show_helper(buf, group->start, group->end);
822 spk_unlock(flags);
823 return retval;
824}
825
826static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
827 const char *buf, size_t count)
828{
829 ssize_t retval = 0;
830 struct msg_group_t *group = find_msg_group(attr->attr.name);
831
f1c6b7fb 832 BUG_ON(!group);
c6e3fd22
WH		 833 retval = message_store_helper(buf, count, group);
834 return retval;
835}
836
837/*
838 * Declare the attributes.
839 */
840static struct kobj_attribute keymap_attribute =
841 __ATTR(keymap, ROOT_W, keymap_show, keymap_store);
842static struct kobj_attribute silent_attribute =
843 __ATTR(silent, USER_W, NULL, silent_store);
844static struct kobj_attribute synth_attribute =
845 __ATTR(synth, USER_RW, synth_show, synth_store);
846static struct kobj_attribute synth_direct_attribute =
847 __ATTR(synth_direct, USER_W, NULL, synth_direct_store);
848static struct kobj_attribute version_attribute =
849 __ATTR_RO(version);
850
851static struct kobj_attribute delimiters_attribute =
852 __ATTR(delimiters, USER_RW, punc_show, punc_store);
853static struct kobj_attribute ex_num_attribute =
854 __ATTR(ex_num, USER_RW, punc_show, punc_store);
855static struct kobj_attribute punc_all_attribute =
856 __ATTR(punc_all, USER_RW, punc_show, punc_store);
857static struct kobj_attribute punc_most_attribute =
858 __ATTR(punc_most, USER_RW, punc_show, punc_store);
859static struct kobj_attribute punc_some_attribute =
860 __ATTR(punc_some, USER_RW, punc_show, punc_store);
861static struct kobj_attribute repeats_attribute =
862 __ATTR(repeats, USER_RW, punc_show, punc_store);
863
864static struct kobj_attribute attrib_bleep_attribute =
865 __ATTR(attrib_bleep, USER_RW, spk_var_show, spk_var_store);
866static struct kobj_attribute bell_pos_attribute =
867 __ATTR(bell_pos, USER_RW, spk_var_show, spk_var_store);
868static struct kobj_attribute bleep_time_attribute =
869 __ATTR(bleep_time, USER_RW, spk_var_show, spk_var_store);
870static struct kobj_attribute bleeps_attribute =
871 __ATTR(bleeps, USER_RW, spk_var_show, spk_var_store);
872static struct kobj_attribute cursor_time_attribute =
873 __ATTR(cursor_time, USER_RW, spk_var_show, spk_var_store);
874static struct kobj_attribute key_echo_attribute =
875 __ATTR(key_echo, USER_RW, spk_var_show, spk_var_store);
876static struct kobj_attribute no_interrupt_attribute =
877 __ATTR(no_interrupt, USER_RW, spk_var_show, spk_var_store);
878static struct kobj_attribute punc_level_attribute =
879 __ATTR(punc_level, USER_RW, spk_var_show, spk_var_store);
880static struct kobj_attribute reading_punc_attribute =
881 __ATTR(reading_punc, USER_RW, spk_var_show, spk_var_store);
882static struct kobj_attribute say_control_attribute =
883 __ATTR(say_control, USER_RW, spk_var_show, spk_var_store);
884static struct kobj_attribute say_word_ctl_attribute =
885 __ATTR(say_word_ctl, USER_RW, spk_var_show, spk_var_store);
886static struct kobj_attribute spell_delay_attribute =
887 __ATTR(spell_delay, USER_RW, spk_var_show, spk_var_store);
888
889/*
890 * These attributes are i18n related.
891 */
892static struct kobj_attribute announcements_attribute =
893 __ATTR(announcements, USER_RW, message_show, message_store);
894static struct kobj_attribute characters_attribute =
895 __ATTR(characters, USER_RW, chars_chartab_show, chars_chartab_store);
896static struct kobj_attribute chartab_attribute =
897 __ATTR(chartab, USER_RW, chars_chartab_show, chars_chartab_store);
898static struct kobj_attribute ctl_keys_attribute =
899 __ATTR(ctl_keys, USER_RW, message_show, message_store);
900static struct kobj_attribute colors_attribute =
901 __ATTR(colors, USER_RW, message_show, message_store);
902static struct kobj_attribute formatted_attribute =
903 __ATTR(formatted, USER_RW, message_show, message_store);
904static struct kobj_attribute function_names_attribute =
905 __ATTR(function_names, USER_RW, message_show, message_store);
906static struct kobj_attribute key_names_attribute =
907 __ATTR(key_names, USER_RW, message_show, message_store);
908static struct kobj_attribute states_attribute =
909 __ATTR(states, USER_RW, message_show, message_store);
910
911/*
912 * Create groups of attributes so that we can create and destroy them all
913 * at once.
914 */
915static struct attribute *main_attrs[] = {
916 &keymap_attribute.attr,
917 &silent_attribute.attr,
918 &synth_attribute.attr,
919 &synth_direct_attribute.attr,
920 &version_attribute.attr,
921 &delimiters_attribute.attr,
922 &ex_num_attribute.attr,
923 &punc_all_attribute.attr,
924 &punc_most_attribute.attr,
925 &punc_some_attribute.attr,
926 &repeats_attribute.attr,
927 &attrib_bleep_attribute.attr,
928 &bell_pos_attribute.attr,
929 &bleep_time_attribute.attr,
930 &bleeps_attribute.attr,
931 &cursor_time_attribute.attr,
932 &key_echo_attribute.attr,
933 &no_interrupt_attribute.attr,
934 &punc_level_attribute.attr,
935 &reading_punc_attribute.attr,
936 &say_control_attribute.attr,
937 &say_word_ctl_attribute.attr,
938 &spell_delay_attribute.attr,
939 NULL,
940};
941
942static struct attribute *i18n_attrs[] = {
943 &announcements_attribute.attr,
944 &characters_attribute.attr,
945 &chartab_attribute.attr,
946 &ctl_keys_attribute.attr,
947 &colors_attribute.attr,
948 &formatted_attribute.attr,
949 &function_names_attribute.attr,
950 &key_names_attribute.attr,
951 &states_attribute.attr,
952 NULL,
953};
954
955/*
956 * An unnamed attribute group will put all of the attributes directly in
957 * the kobject directory. If we specify a name, a subdirectory will be
958 * created for the attributes with the directory being the name of the
959 * attribute group.
960 */
961static struct attribute_group main_attr_group = {
962 .attrs = main_attrs,
963};
964
965static struct attribute_group i18n_attr_group = {
966 .attrs = i18n_attrs,
967 .name = "i18n",
968};
969
970static struct kobject *accessibility_kobj;
971struct kobject *speakup_kobj;
972
973int speakup_kobj_init(void)
974{
975 int retval;
976
977 /*
978 * Create a simple kobject with the name of "accessibility",
979 * located under /sys/
980 *
981 * As this is a simple directory, no uevent will be sent to
982 * userspace. That is why this function should not be used for
983 * any type of dynamic kobjects, where the name and number are
984 * not known ahead of time.
985 */
986 accessibility_kobj = kobject_create_and_add("accessibility", NULL);
987 if (!accessibility_kobj)
988 return -ENOMEM;
989
990 speakup_kobj = kobject_create_and_add("speakup", accessibility_kobj);
991 if (!speakup_kobj) {
6a564867
VK		 992 retval = -ENOMEM;
993 goto err_acc;
c6e3fd22
WH		 994 }
995
996 /* Create the files associated with this kobject */
997 retval = sysfs_create_group(speakup_kobj, &main_attr_group);
998 if (retval)
6a564867 999 goto err_speakup;
c6e3fd22
WH		 1000
1001 retval = sysfs_create_group(speakup_kobj, &i18n_attr_group);
1002 if (retval)
6a564867
VK		 1003 goto err_group;
1004
1005 return 0;
c6e3fd22 1006
6a564867
VK		 1007err_group:
1008 sysfs_remove_group(speakup_kobj, &main_attr_group);
1009err_speakup:
1010 kobject_put(speakup_kobj);
1011err_acc:
1012 kobject_put(accessibility_kobj);
c6e3fd22
WH		 1013 return retval;
1014}
1015
1016void speakup_kobj_exit(void)
1017{
6a564867
VK		 1018 sysfs_remove_group(speakup_kobj, &i18n_attr_group);
1019 sysfs_remove_group(speakup_kobj, &main_attr_group);
c6e3fd22
WH		 1020 kobject_put(speakup_kobj);
1021 kobject_put(accessibility_kobj);
1022}
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