kobjects.c 25.3 KB
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/*
 * Speakup kobject implementation
 *
 * Copyright (C) 2009 William Hubbs
 *
 * This code is based on kobject-example.c, which came with linux 2.6.x.
 *
 * Copyright (C) 2004-2007 Greg Kroah-Hartman <greg@kroah.com>
 * Copyright (C) 2007 Novell Inc.
 *
 * Released under the GPL version 2 only.
 *
 */
#include <linux/slab.h>		/* For kmalloc. */
#include <linux/kernel.h>
#include <linux/kobject.h>
#include <linux/string.h>
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#include <linux/string_helpers.h>
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#include <linux/sysfs.h>
#include <linux/ctype.h>

#include "speakup.h"
#include "spk_priv.h"

/*
 * This is called when a user reads the characters or chartab sys file.
 */
static ssize_t chars_chartab_show(struct kobject *kobj,
	struct kobj_attribute *attr, char *buf)
{
	int i;
	int len = 0;
	char *cp;
	char *buf_pointer = buf;
	size_t bufsize = PAGE_SIZE;
	unsigned long flags;

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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	*buf_pointer = '\0';
	for (i = 0; i < 256; i++) {
		if (bufsize <= 1)
			break;
		if (strcmp("characters", attr->attr.name) == 0) {
			len = scnprintf(buf_pointer, bufsize, "%d\t%s\n",
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					i, spk_characters[i]);
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		} else {	/* show chartab entry */
			if (IS_TYPE(i, B_CTL))
				cp = "B_CTL";
			else if (IS_TYPE(i, WDLM))
				cp = "WDLM";
			else if (IS_TYPE(i, A_PUNC))
				cp = "A_PUNC";
			else if (IS_TYPE(i, PUNC))
				cp = "PUNC";
			else if (IS_TYPE(i, NUM))
				cp = "NUM";
			else if (IS_TYPE(i, A_CAP))
				cp = "A_CAP";
			else if (IS_TYPE(i, ALPHA))
				cp = "ALPHA";
			else if (IS_TYPE(i, B_CAPSYM))
				cp = "B_CAPSYM";
			else if (IS_TYPE(i, B_SYM))
				cp = "B_SYM";
			else
				cp = "0";
			len =
			    scnprintf(buf_pointer, bufsize, "%d\t%s\n", i, cp);
		}
		bufsize -= len;
		buf_pointer += len;
	}
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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	return buf_pointer - buf;
}

/*
 * Print informational messages or warnings after updating
 * character descriptions or chartab entries.
 */
static void report_char_chartab_status(int reset, int received, int used,
	int rejected, int do_characters)
{
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	static char const *object_type[] = {
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		"character class entries",
		"character descriptions",
	};
	int len;
	char buf[80];

	if (reset) {
		pr_info("%s reset to defaults\n", object_type[do_characters]);
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	} else if (received) {
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		len = snprintf(buf, sizeof(buf),
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				" updated %d of %d %s\n",
				used, received, object_type[do_characters]);
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		if (rejected)
			snprintf(buf + (len - 1), sizeof(buf) - (len - 1),
				 " with %d reject%s\n",
				 rejected, rejected > 1 ? "s" : "");
		printk(buf);
	}
}

/*
 * This is called when a user changes the characters or chartab parameters.
 */
static ssize_t chars_chartab_store(struct kobject *kobj,
	struct kobj_attribute *attr, const char *buf, size_t count)
{
	char *cp = (char *) buf;
	char *end = cp + count; /* the null at the end of the buffer */
	char *linefeed = NULL;
	char keyword[MAX_DESC_LEN + 1];
	char *outptr = NULL;	/* Will hold keyword or desc. */
	char *temp = NULL;
	char *desc = NULL;
	ssize_t retval = count;
	unsigned long flags;
	unsigned long index = 0;
	int charclass = 0;
	int received = 0;
	int used = 0;
	int rejected = 0;
	int reset = 0;
	int do_characters = !strcmp(attr->attr.name, "characters");
	size_t desc_length = 0;
	int i;

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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	while (cp < end) {

		while ((cp < end) && (*cp == ' ' || *cp == '\t'))
			cp++;

		if (cp == end)
			break;
		if ((*cp == '\n') || strchr("dDrR", *cp)) {
			reset = 1;
			break;
		}
		received++;

		linefeed = strchr(cp, '\n');
		if (!linefeed) {
			rejected++;
			break;
		}

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		if (!isdigit(*cp)) {
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			rejected++;
			cp = linefeed + 1;
			continue;
		}

		index = simple_strtoul(cp, &temp, 10);
		if (index > 255) {
			rejected++;
			cp = linefeed + 1;
			continue;
		}

		while ((temp < linefeed) && (*temp == ' ' || *temp == '\t'))
			temp++;

		desc_length = linefeed - temp;
		if (desc_length > MAX_DESC_LEN) {
			rejected++;
			cp = linefeed + 1;
			continue;
		}
		if (do_characters) {
			desc = kmalloc(desc_length + 1, GFP_ATOMIC);
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			if (!desc) {
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				retval = -ENOMEM;
				reset = 1;	/* just reset on error. */
				break;
			}
			outptr = desc;
		} else {
			outptr = keyword;
		}

		for (i = 0; i < desc_length; i++)
			outptr[i] = temp[i];
		outptr[desc_length] = '\0';

		if (do_characters) {
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			if (spk_characters[index] != spk_default_chars[index])
				kfree(spk_characters[index]);
			spk_characters[index] = desc;
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			used++;
		} else {
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			charclass = spk_chartab_get_value(keyword);
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			if (charclass == 0) {
				rejected++;
				cp = linefeed + 1;
				continue;
			}
			if (charclass != spk_chartab[index]) {
				spk_chartab[index] = charclass;
				used++;
			}
		}
		cp = linefeed + 1;
	}

	if (reset) {
		if (do_characters)
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			spk_reset_default_chars();
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		else
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			spk_reset_default_chartab();
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	}

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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	report_char_chartab_status(reset, received, used, rejected,
		do_characters);
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	return retval;
}

/*
 * This is called when a user reads the keymap parameter.
 */
static ssize_t keymap_show(struct kobject *kobj, struct kobj_attribute *attr,
	char *buf)
{
	char *cp = buf;
	int i;
	int n;
	int num_keys;
	int nstates;
	u_char *cp1;
	u_char ch;
	unsigned long flags;
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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	cp1 = spk_key_buf + SHIFT_TBL_SIZE;
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	num_keys = (int)(*cp1);
	nstates = (int)cp1[1];
	cp += sprintf(cp, "%d, %d, %d,\n", KEY_MAP_VER, num_keys, nstates);
	cp1 += 2; /* now pointing at shift states */
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	/* dump num_keys+1 as first row is shift states + flags,
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	 * each subsequent row is key + states
	 */
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	for (n = 0; n <= num_keys; n++) {
		for (i = 0; i <= nstates; i++) {
			ch = *cp1++;
			cp += sprintf(cp, "%d,", (int)ch);
			*cp++ = (i < nstates) ? SPACE : '\n';
		}
	}
	cp += sprintf(cp, "0, %d\n", KEY_MAP_VER);
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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	return (int)(cp-buf);
}

/*
 * This is called when a user changes the keymap parameter.
 */
static ssize_t keymap_store(struct kobject *kobj, struct kobj_attribute *attr,
	const char *buf, size_t count)
{
	int i;
	ssize_t ret = count;
	char *in_buff = NULL;
	char *cp;
	u_char *cp1;
	unsigned long flags;

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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	in_buff = kmemdup(buf, count + 1, GFP_ATOMIC);
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	if (!in_buff) {
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		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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		return -ENOMEM;
	}
	if (strchr("dDrR", *in_buff)) {
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		spk_set_key_info(spk_key_defaults, spk_key_buf);
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		pr_info("keymap set to default values\n");
		kfree(in_buff);
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		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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		return count;
	}
	if (in_buff[count - 1] == '\n')
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		in_buff[count - 1] = '\0';
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	cp = in_buff;
	cp1 = (u_char *)in_buff;
	for (i = 0; i < 3; i++) {
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		cp = spk_s2uchar(cp, cp1);
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		cp1++;
	}
	i = (int)cp1[-2]+1;
	i *= (int)cp1[-1]+1;
	i += 2; /* 0 and last map ver */
	if (cp1[-3] != KEY_MAP_VER || cp1[-1] > 10 ||
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			i+SHIFT_TBL_SIZE+4 >= sizeof(spk_key_buf)) {
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		pr_warn("i %d %d %d %d\n", i,
				(int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
		kfree(in_buff);
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		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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		return -EINVAL;
	}
	while (--i >= 0) {
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		cp = spk_s2uchar(cp, cp1);
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		cp1++;
		if (!(*cp))
			break;
	}
	if (i != 0 || cp1[-1] != KEY_MAP_VER || cp1[-2] != 0) {
		ret = -EINVAL;
		pr_warn("end %d %d %d %d\n", i,
				(int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
	} else {
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		if (spk_set_key_info(in_buff, spk_key_buf)) {
			spk_set_key_info(spk_key_defaults, spk_key_buf);
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			ret = -EINVAL;
			pr_warn("set key failed\n");
		}
	}
	kfree(in_buff);
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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	return ret;
}

/*
 * This is called when a user changes the value of the silent parameter.
 */
static ssize_t silent_store(struct kobject *kobj, struct kobj_attribute *attr,
	const char *buf, size_t count)
{
	int len;
	struct vc_data *vc = vc_cons[fg_console].d;
	char ch = 0;
	char shut;
	unsigned long flags;

	len = strlen(buf);
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	if (len > 0 && len < 3) {
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		ch = buf[0];
		if (ch == '\n')
			ch = '0';
	}
	if (ch < '0' || ch > '7') {
		pr_warn("silent value '%c' not in range (0,7)\n", ch);
		return -EINVAL;
	}
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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	if (ch&2) {
		shut = 1;
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		spk_do_flush();
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	} else {
		shut = 0;
	}
	if (ch&4)
		shut |= 0x40;
	if (ch&1)
		spk_shut_up |= shut;
	else
		spk_shut_up &= ~shut;
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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	return count;
}

/*
 * This is called when a user reads the synth setting.
 */
static ssize_t synth_show(struct kobject *kobj, struct kobj_attribute *attr,
	char *buf)
{
	int rv;

	if (synth == NULL)
		rv = sprintf(buf, "%s\n", "none");
	else
		rv = sprintf(buf, "%s\n", synth->name);
	return rv;
}

/*
 * This is called when a user requests to change synthesizers.
 */
static ssize_t synth_store(struct kobject *kobj, struct kobj_attribute *attr,
	const char *buf, size_t count)
{
	int len;
	char new_synth_name[10];

	len = strlen(buf);
	if (len < 2 || len > 9)
		return -EINVAL;
	strncpy(new_synth_name, buf, len);
	if (new_synth_name[len - 1] == '\n')
		len--;
	new_synth_name[len] = '\0';
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	spk_strlwr(new_synth_name);
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	if ((synth != NULL) && (!strcmp(new_synth_name, synth->name))) {
		pr_warn("%s already in use\n", new_synth_name);
	} else if (synth_init(new_synth_name) != 0) {
		pr_warn("failed to init synth %s\n", new_synth_name);
		return -ENODEV;
	}
	return count;
}

/*
 * This is called when text is sent to the synth via the synth_direct file.
 */
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static ssize_t synth_direct_store(struct kobject *kobj,
	struct kobj_attribute *attr, const char *buf, size_t count)
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{
	u_char tmp[256];
	int len;
	int bytes;
	const char *ptr = buf;

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	if (!synth)
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		return -EPERM;

	len = strlen(buf);
	while (len > 0) {
		bytes = min_t(size_t, len, 250);
		strncpy(tmp, ptr, bytes);
		tmp[bytes] = '\0';
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		string_unescape_any_inplace(tmp);
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		synth_printf("%s", tmp);
		ptr += bytes;
		len -= bytes;
	}
	return count;
}

/*
 * This function is called when a user reads the version.
 */
static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr,
	char *buf)
{
	char *cp;

	cp = buf;
	cp += sprintf(cp, "Speakup version %s\n", SPEAKUP_VERSION);
	if (synth)
		cp += sprintf(cp, "%s synthesizer driver version %s\n",
		synth->name, synth->version);
	return cp - buf;
}

/*
 * This is called when a user reads the punctuation settings.
 */
static ssize_t punc_show(struct kobject *kobj, struct kobj_attribute *attr,
	char *buf)
{
	int i;
	char *cp = buf;
	struct st_var_header *p_header;
	struct punc_var_t *var;
	struct st_bits_data *pb;
	short mask;
	unsigned long flags;

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	p_header = spk_var_header_by_name(attr->attr.name);
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	if (p_header == NULL) {
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		pr_warn("p_header is null, attr->attr.name is %s\n",
			attr->attr.name);
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		return -EINVAL;
	}

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	var = spk_get_punc_var(p_header->var_id);
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	if (var == NULL) {
		pr_warn("var is null, p_header->var_id is %i\n",
				p_header->var_id);
		return -EINVAL;
	}

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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	pb = (struct st_bits_data *) &spk_punc_info[var->value];
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	mask = pb->mask;
	for (i = 33; i < 128; i++) {
		if (!(spk_chartab[i]&mask))
			continue;
		*cp++ = (char)i;
	}
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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	return cp-buf;
}

/*
 * This is called when a user changes the punctuation settings.
 */
static ssize_t punc_store(struct kobject *kobj, struct kobj_attribute *attr,
			 const char *buf, size_t count)
{
	int x;
	struct st_var_header *p_header;
	struct punc_var_t *var;
	char punc_buf[100];
	unsigned long flags;

	x = strlen(buf);
	if (x < 1 || x > 99)
		return -EINVAL;

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	p_header = spk_var_header_by_name(attr->attr.name);
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	if (p_header == NULL) {
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		pr_warn("p_header is null, attr->attr.name is %s\n",
			attr->attr.name);
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		return -EINVAL;
	}

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	var = spk_get_punc_var(p_header->var_id);
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	if (var == NULL) {
		pr_warn("var is null, p_header->var_id is %i\n",
				p_header->var_id);
		return -EINVAL;
	}

	strncpy(punc_buf, buf, x);

	while (x && punc_buf[x - 1] == '\n')
		x--;
	punc_buf[x] = '\0';

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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	if (*punc_buf == 'd' || *punc_buf == 'r')
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		x = spk_set_mask_bits(NULL, var->value, 3);
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	else
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		x = spk_set_mask_bits(punc_buf, var->value, 3);
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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	return count;
}

/*
 * This function is called when a user reads one of the variable parameters.
 */
ssize_t spk_var_show(struct kobject *kobj, struct kobj_attribute *attr,
	char *buf)
{
	int rv = 0;
	struct st_var_header *param;
	struct var_t *var;
		char *cp1;
	char *cp;
	char ch;
	unsigned long flags;

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	param = spk_var_header_by_name(attr->attr.name);
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	if (param == NULL)
		return -EINVAL;

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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	var = (struct var_t *) param->data;
	switch (param->var_type) {
	case VAR_NUM:
	case VAR_TIME:
		if (var)
			rv = sprintf(buf, "%i\n", var->u.n.value);
		else
			rv = sprintf(buf, "0\n");
		break;
	case VAR_STRING:
		if (var) {
			cp1 = buf;
			*cp1++ = '"';
			for (cp = (char *)param->p_val; (ch = *cp); cp++) {
				if (ch >= ' ' && ch < '~')
					*cp1++ = ch;
				else
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					cp1 += sprintf(cp1, "\\x%02x", ch);
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			}
			*cp1++ = '"';
			*cp1++ = '\n';
			*cp1 = '\0';
			rv = cp1-buf;
		} else {
			rv = sprintf(buf, "\"\"\n");
		}
		break;
	default:
		rv = sprintf(buf, "Bad parameter  %s, type %i\n",
			param->name, param->var_type);
		break;
	}
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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	return rv;
}
EXPORT_SYMBOL_GPL(spk_var_show);

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/*
 * Used to reset either default_pitch or default_vol.
 */
static inline void spk_reset_default_value(char *header_name,
					int *synth_default_value, int idx)
{
	struct st_var_header *param;

	if (synth && synth_default_value) {
		param = spk_var_header_by_name(header_name);
		if (param)  {
			spk_set_num_var(synth_default_value[idx],
					param, E_NEW_DEFAULT);
			spk_set_num_var(0, param, E_DEFAULT);
			pr_info("%s reset to default value\n", param->name);
		}
	}
}

609
610
611
612
613
614
615
616
617
618
619
620
/*
 * This function is called when a user echos a value to one of the
 * variable parameters.
 */
ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
			 const char *buf, size_t count)
{
	struct st_var_header *param;
	int ret;
	int len;
	char *cp;
	struct var_t *var_data;
621
	long value;
622
623
	unsigned long flags;

624
	param = spk_var_header_by_name(attr->attr.name);
625
626
627
628
629
	if (param == NULL)
		return -EINVAL;
	if (param->data == NULL)
		return 0;
	ret = 0;
630
631
	cp = (char *)buf;
	string_unescape_any_inplace(cp);
632

633
	spin_lock_irqsave(&speakup_info.spinlock, flags);
634
635
636
637
638
639
640
641
642
	switch (param->var_type) {
	case VAR_NUM:
	case VAR_TIME:
		if (*cp == 'd' || *cp == 'r' || *cp == '\0')
			len = E_DEFAULT;
		else if (*cp == '+' || *cp == '-')
			len = E_INC;
		else
			len = E_SET;
643
644
645
		if (kstrtol(cp, 10, &value) == 0)
			ret = spk_set_num_var(value, param, len);
		else
646
			pr_warn("overflow or parsing error has occurred");
647
		if (ret == -ERANGE) {
648
649
			var_data = param->data;
			pr_warn("value for %s out of range, expect %d to %d\n",
650
				param->name,
651
652
				var_data->u.n.low, var_data->u.n.high);
		}
653
654
655
656
657

	       /*
		* If voice was just changed, we might need to reset our default
		* pitch and volume.
		*/
658
659
660
661
		if (param->var_id == VOICE && synth &&
		    (ret == 0 || ret == -ERESTART)) {
			var_data = param->data;
			value = var_data->u.n.value;
662
663
664
665
666
			spk_reset_default_value("pitch", synth->default_pitch,
				value);
			spk_reset_default_value("vol", synth->default_vol,
				value);
		}
667
668
		break;
	case VAR_STRING:
669
670
		len = strlen(cp);
		if ((len >= 1) && (cp[len - 1] == '\n'))
671
			--len;
672
673
		if ((len >= 2) && (cp[0] == '"') && (cp[len - 1] == '"')) {
			++cp;
674
675
676
			len -= 2;
		}
		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
682
683
684
685
686
		break;
	default:
		pr_warn("%s unknown type %d\n",
			param->name, (int)param->var_type);
	break;
	}
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
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
	return count;
}
EXPORT_SYMBOL_GPL(spk_var_store);

/*
 * Functions for reading and writing lists of i18n messages.  Incomplete.
 */

static ssize_t message_show_helper(char *buf, enum msg_index_t first,
	enum msg_index_t last)
{
	size_t bufsize = PAGE_SIZE;
	char *buf_pointer = buf;
	int printed;
	enum msg_index_t cursor;
	int index = 0;
	*buf_pointer = '\0'; /* buf_pointer always looking at a NUL byte. */

	for (cursor = first; cursor <= last; cursor++, index++) {
		if (bufsize <= 1)
			break;
		printed = scnprintf(buf_pointer, bufsize, "%d\t%s\n",
713
			index, spk_msg_get(cursor));
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
		buf_pointer += printed;
		bufsize -= printed;
	}

	return buf_pointer - buf;
}

static void report_msg_status(int reset, int received, int used,
	int rejected, char *groupname)
{
	int len;
	char buf[160];

	if (reset) {
		pr_info("i18n messages from group %s reset to defaults\n",
			groupname);
730
	} else if (received) {
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
		len = snprintf(buf, sizeof(buf),
			       " updated %d of %d i18n messages from group %s\n",
				       used, received, groupname);
		if (rejected)
			snprintf(buf + (len - 1), sizeof(buf) - (len - 1),
				 " with %d reject%s\n",
				 rejected, rejected > 1 ? "s" : "");
		printk(buf);
	}
}

static ssize_t message_store_helper(const char *buf, size_t count,
	struct msg_group_t *group)
{
	char *cp = (char *) buf;
	char *end = cp + count;
	char *linefeed = NULL;
	char *temp = NULL;
	ssize_t msg_stored = 0;
	ssize_t retval = count;
	size_t desc_length = 0;
	unsigned long index = 0;
	int received = 0;
	int used = 0;
	int rejected = 0;
	int reset = 0;
	enum msg_index_t firstmessage = group->start;
	enum msg_index_t lastmessage = group->end;
	enum msg_index_t curmessage;

	while (cp < end) {

		while ((cp < end) && (*cp == ' ' || *cp == '\t'))
			cp++;

		if (cp == end)
			break;
		if (strchr("dDrR", *cp)) {
			reset = 1;
			break;
		}
		received++;

		linefeed = strchr(cp, '\n');
		if (!linefeed) {
			rejected++;
			break;
		}

780
		if (!isdigit(*cp)) {
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
			rejected++;
			cp = linefeed + 1;
			continue;
		}

		index = simple_strtoul(cp, &temp, 10);

		while ((temp < linefeed) && (*temp == ' ' || *temp == '\t'))
			temp++;

		desc_length = linefeed - temp;
		curmessage = firstmessage + index;

		/*
		 * Note the check (curmessage < firstmessage).  It is not
		 * redundant.  Suppose that the user gave us an index
		 * equal to ULONG_MAX - 1.  If firstmessage > 1, then
		 * firstmessage + index < firstmessage!
		 */

		if ((curmessage < firstmessage) || (curmessage > lastmessage)) {
			rejected++;
			cp = linefeed + 1;
			continue;
		}

807
		msg_stored = spk_msg_set(curmessage, temp, desc_length);
808
809
810
811
812
813
814
		if (msg_stored < 0) {
			retval = msg_stored;
			if (msg_stored == -ENOMEM)
				reset = 1;
			break;
		}

815
816
		used++;

817
818
819
820
		cp = linefeed + 1;
	}

	if (reset)
821
		spk_reset_msg_group(group);
822
823
824
825
826
827
828
829
830

	report_msg_status(reset, received, used, rejected, group->name);
	return retval;
}

static ssize_t message_show(struct kobject *kobj,
	struct kobj_attribute *attr, char *buf)
{
	ssize_t retval = 0;
831
	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
832
833
	unsigned long flags;

834
	BUG_ON(!group);
835
	spin_lock_irqsave(&speakup_info.spinlock, flags);
836
	retval = message_show_helper(buf, group->start, group->end);
837
	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
838
839
840
841
842
843
	return retval;
}

static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
	const char *buf, size_t count)
{
844
	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
845

846
	BUG_ON(!group);
847
	return message_store_helper(buf, count, group);
848
849
850
851
852
853
}

/*
 * Declare the attributes.
 */
static struct kobj_attribute keymap_attribute =
854
	__ATTR_RW(keymap);
855
static struct kobj_attribute silent_attribute =
856
	__ATTR_WO(silent);
857
static struct kobj_attribute synth_attribute =
858
	__ATTR_RW(synth);
859
static struct kobj_attribute synth_direct_attribute =
860
	__ATTR_WO(synth_direct);
861
862
863
864
static struct kobj_attribute version_attribute =
	__ATTR_RO(version);

static struct kobj_attribute delimiters_attribute =
865
	__ATTR(delimiters, S_IWUSR|S_IRUGO, punc_show, punc_store);
866
static struct kobj_attribute ex_num_attribute =
867
	__ATTR(ex_num, S_IWUSR|S_IRUGO, punc_show, punc_store);
868
static struct kobj_attribute punc_all_attribute =
869
	__ATTR(punc_all, S_IWUSR|S_IRUGO, punc_show, punc_store);
870
static struct kobj_attribute punc_most_attribute =
871
	__ATTR(punc_most, S_IWUSR|S_IRUGO, punc_show, punc_store);
872
static struct kobj_attribute punc_some_attribute =
873
	__ATTR(punc_some, S_IWUSR|S_IRUGO, punc_show, punc_store);
874
static struct kobj_attribute repeats_attribute =
875
	__ATTR(repeats, S_IWUSR|S_IRUGO, punc_show, punc_store);
876
877

static struct kobj_attribute attrib_bleep_attribute =
878
	__ATTR(attrib_bleep, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
879
static struct kobj_attribute bell_pos_attribute =
880
	__ATTR(bell_pos, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
881
static struct kobj_attribute bleep_time_attribute =
882
	__ATTR(bleep_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
883
static struct kobj_attribute bleeps_attribute =
884
	__ATTR(bleeps, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
885
static struct kobj_attribute cursor_time_attribute =
886
	__ATTR(cursor_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
887
static struct kobj_attribute key_echo_attribute =
888
	__ATTR(key_echo, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
889
static struct kobj_attribute no_interrupt_attribute =
890
	__ATTR(no_interrupt, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
891
static struct kobj_attribute punc_level_attribute =
892
	__ATTR(punc_level, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
893
static struct kobj_attribute reading_punc_attribute =
894
	__ATTR(reading_punc, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
895
static struct kobj_attribute say_control_attribute =
896
	__ATTR(say_control, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
897
static struct kobj_attribute say_word_ctl_attribute =
898
	__ATTR(say_word_ctl, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
899
static struct kobj_attribute spell_delay_attribute =
900
	__ATTR(spell_delay, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
901
902
903
904
905

/*
 * These attributes are i18n related.
 */
static struct kobj_attribute announcements_attribute =
906
	__ATTR(announcements, S_IWUSR|S_IRUGO, message_show, message_store);
907
static struct kobj_attribute characters_attribute =
908
909
	__ATTR(characters, S_IWUSR|S_IRUGO, chars_chartab_show,
	       chars_chartab_store);
910
static struct kobj_attribute chartab_attribute =
911
912
	__ATTR(chartab, S_IWUSR|S_IRUGO, chars_chartab_show,
	       chars_chartab_store);
913
static struct kobj_attribute ctl_keys_attribute =
914
	__ATTR(ctl_keys, S_IWUSR|S_IRUGO, message_show, message_store);
915
static struct kobj_attribute colors_attribute =
916
	__ATTR(colors, S_IWUSR|S_IRUGO, message_show, message_store);
917
static struct kobj_attribute formatted_attribute =
918
	__ATTR(formatted, S_IWUSR|S_IRUGO, message_show, message_store);
919
static struct kobj_attribute function_names_attribute =
920
	__ATTR(function_names, S_IWUSR|S_IRUGO, message_show, message_store);
921
static struct kobj_attribute key_names_attribute =
922
	__ATTR(key_names, S_IWUSR|S_IRUGO, message_show, message_store);
923
static struct kobj_attribute states_attribute =
924
	__ATTR(states, S_IWUSR|S_IRUGO, message_show, message_store);
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001

/*
 * Create groups of attributes so that we can create and destroy them all
 * at once.
 */
static struct attribute *main_attrs[] = {
	&keymap_attribute.attr,
	&silent_attribute.attr,
	&synth_attribute.attr,
	&synth_direct_attribute.attr,
	&version_attribute.attr,
	&delimiters_attribute.attr,
	&ex_num_attribute.attr,
	&punc_all_attribute.attr,
	&punc_most_attribute.attr,
	&punc_some_attribute.attr,
	&repeats_attribute.attr,
	&attrib_bleep_attribute.attr,
	&bell_pos_attribute.attr,
	&bleep_time_attribute.attr,
	&bleeps_attribute.attr,
	&cursor_time_attribute.attr,
	&key_echo_attribute.attr,
	&no_interrupt_attribute.attr,
	&punc_level_attribute.attr,
	&reading_punc_attribute.attr,
	&say_control_attribute.attr,
	&say_word_ctl_attribute.attr,
	&spell_delay_attribute.attr,
	NULL,
};

static struct attribute *i18n_attrs[] = {
	&announcements_attribute.attr,
	&characters_attribute.attr,
	&chartab_attribute.attr,
	&ctl_keys_attribute.attr,
	&colors_attribute.attr,
	&formatted_attribute.attr,
	&function_names_attribute.attr,
	&key_names_attribute.attr,
	&states_attribute.attr,
	NULL,
};

/*
 * An unnamed attribute group will put all of the attributes directly in
 * the kobject directory.  If we specify a name, a subdirectory will be
 * created for the attributes with the directory being the name of the
 * attribute group.
 */
static struct attribute_group main_attr_group = {
	.attrs = main_attrs,
};

static struct attribute_group i18n_attr_group = {
	.attrs = i18n_attrs,
	.name = "i18n",
};

static struct kobject *accessibility_kobj;
struct kobject *speakup_kobj;

int speakup_kobj_init(void)
{
	int retval;

	/*
	 * Create a simple kobject with the name of "accessibility",
	 * located under /sys/
	 *
	 * As this is a simple directory, no uevent will be sent to
	 * userspace.  That is why this function should not be used for
	 * any type of dynamic kobjects, where the name and number are
	 * not known ahead of time.
	 */
	accessibility_kobj = kobject_create_and_add("accessibility", NULL);
1002
1003
1004
1005
	if (!accessibility_kobj) {
		retval = -ENOMEM;
		goto out;
	}
1006
1007
1008

	speakup_kobj = kobject_create_and_add("speakup", accessibility_kobj);
	if (!speakup_kobj) {
1009
1010
		retval = -ENOMEM;
		goto err_acc;
1011
1012
1013
1014
1015
	}

	/* Create the files associated with this kobject */
	retval = sysfs_create_group(speakup_kobj, &main_attr_group);
	if (retval)
1016
		goto err_speakup;
1017
1018
1019

	retval = sysfs_create_group(speakup_kobj, &i18n_attr_group);
	if (retval)
1020
1021
		goto err_group;

1022
	goto out;
1023

1024
1025
1026
1027
1028
1029
err_group:
	sysfs_remove_group(speakup_kobj, &main_attr_group);
err_speakup:
	kobject_put(speakup_kobj);
err_acc:
	kobject_put(accessibility_kobj);
1030
out:
1031
1032
1033
1034
1035
	return retval;
}

void speakup_kobj_exit(void)
{
1036
1037
	sysfs_remove_group(speakup_kobj, &i18n_attr_group);
	sysfs_remove_group(speakup_kobj, &main_attr_group);
1038
1039
1040
	kobject_put(speakup_kobj);
	kobject_put(accessibility_kobj);
}