kobjects.c 25.1 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);
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}

/*
 * 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++;
	}
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	i = (int)cp1[-2] + 1;
	i *= (int)cp1[-1] + 1;
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	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;
	}
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	if (ch & 4)
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		shut |= 0x40;
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	if (ch & 1)
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		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;

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	if (!synth)
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		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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	unsigned long flags;
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	if (!synth)
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		return -EPERM;

	len = strlen(buf);
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	spin_lock_irqsave(&speakup_info.spinlock, flags);
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	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;
	}
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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 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) {
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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) {
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		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) {
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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) {
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		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)
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		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);
		}
	}
}

611
612
613
614
615
616
617
618
619
620
621
622
/*
 * 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;
623
	long value;
624
625
	unsigned long flags;

626
	param = spk_var_header_by_name(attr->attr.name);
627
	if (!param)
628
		return -EINVAL;
629
	if (!param->data)
630
631
		return 0;
	ret = 0;
632
633
	cp = (char *)buf;
	string_unescape_any_inplace(cp);
634

635
	spin_lock_irqsave(&speakup_info.spinlock, flags);
636
637
638
639
640
641
642
643
644
	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;
645
646
647
		if (kstrtol(cp, 10, &value) == 0)
			ret = spk_set_num_var(value, param, len);
		else
648
			pr_warn("overflow or parsing error has occurred");
649
		if (ret == -ERANGE) {
650
651
			var_data = param->data;
			pr_warn("value for %s out of range, expect %d to %d\n",
652
				param->name,
653
654
				var_data->u.n.low, var_data->u.n.high);
		}
655
656
657
658
659

	       /*
		* If voice was just changed, we might need to reset our default
		* pitch and volume.
		*/
660
661
662
663
		if (param->var_id == VOICE && synth &&
		    (ret == 0 || ret == -ERESTART)) {
			var_data = param->data;
			value = var_data->u.n.value;
664
665
666
667
668
			spk_reset_default_value("pitch", synth->default_pitch,
				value);
			spk_reset_default_value("vol", synth->default_vol,
				value);
		}
669
670
		break;
	case VAR_STRING:
671
672
		len = strlen(cp);
		if ((len >= 1) && (cp[len - 1] == '\n'))
673
			--len;
674
675
		if ((len >= 2) && (cp[0] == '"') && (cp[len - 1] == '"')) {
			++cp;
676
677
678
			len -= 2;
		}
		cp[len] = '\0';
679
		ret = spk_set_string_var(cp, param, len);
680
		if (ret == -E2BIG)
681
			pr_warn("value too long for %s\n",
682
					param->name);
683
684
685
686
687
688
		break;
	default:
		pr_warn("%s unknown type %d\n",
			param->name, (int)param->var_type);
	break;
	}
689
	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
690

691
	if (ret == -ERESTART)
692
		pr_info("%s reset to default value\n", param->name);
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
	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",
715
			index, spk_msg_get(cursor));
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
		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);
732
	} else if (received) {
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
780
781
		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;
		}

782
		if (!isdigit(*cp)) {
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
			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;
		}

809
		msg_stored = spk_msg_set(curmessage, temp, desc_length);
810
811
812
813
814
815
816
		if (msg_stored < 0) {
			retval = msg_stored;
			if (msg_stored == -ENOMEM)
				reset = 1;
			break;
		}

817
818
		used++;

819
820
821
822
		cp = linefeed + 1;
	}

	if (reset)
823
		spk_reset_msg_group(group);
824
825
826
827
828
829
830
831
832

	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;
833
	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
834
835
	unsigned long flags;

836
	BUG_ON(!group);
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
841
842
843
844
845
	return retval;
}

static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
	const char *buf, size_t count)
{
846
	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
847

848
	BUG_ON(!group);
849
	return message_store_helper(buf, count, group);
850
851
852
853
854
855
}

/*
 * Declare the attributes.
 */
static struct kobj_attribute keymap_attribute =
856
	__ATTR_RW(keymap);
857
static struct kobj_attribute silent_attribute =
858
	__ATTR_WO(silent);
859
static struct kobj_attribute synth_attribute =
860
	__ATTR_RW(synth);
861
static struct kobj_attribute synth_direct_attribute =
862
	__ATTR_WO(synth_direct);
863
864
865
866
static struct kobj_attribute version_attribute =
	__ATTR_RO(version);

static struct kobj_attribute delimiters_attribute =
867
	__ATTR(delimiters, 0644, punc_show, punc_store);
868
static struct kobj_attribute ex_num_attribute =
869
	__ATTR(ex_num, 0644, punc_show, punc_store);
870
static struct kobj_attribute punc_all_attribute =
871
	__ATTR(punc_all, 0644, punc_show, punc_store);
872
static struct kobj_attribute punc_most_attribute =
873
	__ATTR(punc_most, 0644, punc_show, punc_store);
874
static struct kobj_attribute punc_some_attribute =
875
	__ATTR(punc_some, 0644, punc_show, punc_store);
876
static struct kobj_attribute repeats_attribute =
877
	__ATTR(repeats, 0644, punc_show, punc_store);
878
879

static struct kobj_attribute attrib_bleep_attribute =
880
	__ATTR(attrib_bleep, 0644, spk_var_show, spk_var_store);
881
static struct kobj_attribute bell_pos_attribute =
882
	__ATTR(bell_pos, 0644, spk_var_show, spk_var_store);
883
static struct kobj_attribute bleep_time_attribute =
884
	__ATTR(bleep_time, 0644, spk_var_show, spk_var_store);
885
static struct kobj_attribute bleeps_attribute =
886
	__ATTR(bleeps, 0644, spk_var_show, spk_var_store);
887
static struct kobj_attribute cursor_time_attribute =
888
	__ATTR(cursor_time, 0644, spk_var_show, spk_var_store);
889
static struct kobj_attribute key_echo_attribute =
890
	__ATTR(key_echo, 0644, spk_var_show, spk_var_store);
891
static struct kobj_attribute no_interrupt_attribute =
892
	__ATTR(no_interrupt, 0644, spk_var_show, spk_var_store);
893
static struct kobj_attribute punc_level_attribute =
894
	__ATTR(punc_level, 0644, spk_var_show, spk_var_store);
895
static struct kobj_attribute reading_punc_attribute =
896
	__ATTR(reading_punc, 0644, spk_var_show, spk_var_store);
897
static struct kobj_attribute say_control_attribute =
898
	__ATTR(say_control, 0644, spk_var_show, spk_var_store);
899
static struct kobj_attribute say_word_ctl_attribute =
900
	__ATTR(say_word_ctl, 0644, spk_var_show, spk_var_store);
901
static struct kobj_attribute spell_delay_attribute =
902
	__ATTR(spell_delay, 0644, spk_var_show, spk_var_store);
903
904
905
906
907

/*
 * These attributes are i18n related.
 */
static struct kobj_attribute announcements_attribute =
908
	__ATTR(announcements, 0644, message_show, message_store);
909
static struct kobj_attribute characters_attribute =
910
	__ATTR(characters, 0644, chars_chartab_show,
911
	       chars_chartab_store);
912
static struct kobj_attribute chartab_attribute =
913
	__ATTR(chartab, 0644, chars_chartab_show,
914
	       chars_chartab_store);
915
static struct kobj_attribute ctl_keys_attribute =
916
	__ATTR(ctl_keys, 0644, message_show, message_store);
917
static struct kobj_attribute colors_attribute =
918
	__ATTR(colors, 0644, message_show, message_store);
919
static struct kobj_attribute formatted_attribute =
920
	__ATTR(formatted, 0644, message_show, message_store);
921
static struct kobj_attribute function_names_attribute =
922
	__ATTR(function_names, 0644, message_show, message_store);
923
static struct kobj_attribute key_names_attribute =
924
	__ATTR(key_names, 0644, message_show, message_store);
925
static struct kobj_attribute states_attribute =
926
	__ATTR(states, 0644, message_show, message_store);
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

/*
 * 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.
 */
978
static const struct attribute_group main_attr_group = {
979
980
981
	.attrs = main_attrs,
};

982
static const struct attribute_group i18n_attr_group = {
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
	.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);
1004
1005
1006
1007
	if (!accessibility_kobj) {
		retval = -ENOMEM;
		goto out;
	}
1008
1009
1010

	speakup_kobj = kobject_create_and_add("speakup", accessibility_kobj);
	if (!speakup_kobj) {
1011
1012
		retval = -ENOMEM;
		goto err_acc;
1013
1014
1015
1016
1017
	}

	/* Create the files associated with this kobject */
	retval = sysfs_create_group(speakup_kobj, &main_attr_group);
	if (retval)
1018
		goto err_speakup;
1019
1020
1021

	retval = sysfs_create_group(speakup_kobj, &i18n_attr_group);
	if (retval)
1022
1023
		goto err_group;

1024
	goto out;
1025

1026
1027
1028
1029
1030
1031
err_group:
	sysfs_remove_group(speakup_kobj, &main_attr_group);
err_speakup:
	kobject_put(speakup_kobj);
err_acc:
	kobject_put(accessibility_kobj);
1032
out:
1033
1034
1035
1036
1037
	return retval;
}

void speakup_kobj_exit(void)
{
1038
1039
	sysfs_remove_group(speakup_kobj, &i18n_attr_group);
	sysfs_remove_group(speakup_kobj, &main_attr_group);
1040
1041
1042
	kobject_put(speakup_kobj);
	kobject_put(accessibility_kobj);
}