kobjects.c 25.2 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)
{
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	char *cp = (char *)buf;
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	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) {
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		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++) {
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		if (!(spk_chartab[i] & mask))
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			continue;
		*cp++ = (char)i;
	}
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	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
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	return cp - buf;
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}

/*
 * 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;
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	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';
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			rv = cp1 - buf;
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		} 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
		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)
{
747
	char *cp = (char *)buf;
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
	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;
		}

781
		if (!isdigit(*cp)) {
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
807
			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;
		}

808
		msg_stored = spk_msg_set(curmessage, temp, desc_length);
809
810
811
812
813
814
815
		if (msg_stored < 0) {
			retval = msg_stored;
			if (msg_stored == -ENOMEM)
				reset = 1;
			break;
		}

816
817
		used++;

818
819
820
821
		cp = linefeed + 1;
	}

	if (reset)
822
		spk_reset_msg_group(group);
823
824
825
826
827
828
829
830
831

	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;
832
	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
833
834
	unsigned long flags;

835
836
837
	if (WARN_ON(!group))
		return -EINVAL;

838
	spin_lock_irqsave(&speakup_info.spinlock, flags);
839
	retval = message_show_helper(buf, group->start, group->end);
840
	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
841
842
843
844
845
846
	return retval;
}

static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
	const char *buf, size_t count)
{
847
	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
848

849
850
851
	if (WARN_ON(!group))
		return -EINVAL;

852
	return message_store_helper(buf, count, group);
853
854
855
856
857
858
}

/*
 * Declare the attributes.
 */
static struct kobj_attribute keymap_attribute =
859
	__ATTR_RW(keymap);
860
static struct kobj_attribute silent_attribute =
861
	__ATTR_WO(silent);
862
static struct kobj_attribute synth_attribute =
863
	__ATTR_RW(synth);
864
static struct kobj_attribute synth_direct_attribute =
865
	__ATTR_WO(synth_direct);
866
867
868
869
static struct kobj_attribute version_attribute =
	__ATTR_RO(version);

static struct kobj_attribute delimiters_attribute =
870
	__ATTR(delimiters, 0644, punc_show, punc_store);
871
static struct kobj_attribute ex_num_attribute =
872
	__ATTR(ex_num, 0644, punc_show, punc_store);
873
static struct kobj_attribute punc_all_attribute =
874
	__ATTR(punc_all, 0644, punc_show, punc_store);
875
static struct kobj_attribute punc_most_attribute =
876
	__ATTR(punc_most, 0644, punc_show, punc_store);
877
static struct kobj_attribute punc_some_attribute =
878
	__ATTR(punc_some, 0644, punc_show, punc_store);
879
static struct kobj_attribute repeats_attribute =
880
	__ATTR(repeats, 0644, punc_show, punc_store);
881
882

static struct kobj_attribute attrib_bleep_attribute =
883
	__ATTR(attrib_bleep, 0644, spk_var_show, spk_var_store);
884
static struct kobj_attribute bell_pos_attribute =
885
	__ATTR(bell_pos, 0644, spk_var_show, spk_var_store);
886
static struct kobj_attribute bleep_time_attribute =
887
	__ATTR(bleep_time, 0644, spk_var_show, spk_var_store);
888
static struct kobj_attribute bleeps_attribute =
889
	__ATTR(bleeps, 0644, spk_var_show, spk_var_store);
890
static struct kobj_attribute cursor_time_attribute =
891
	__ATTR(cursor_time, 0644, spk_var_show, spk_var_store);
892
static struct kobj_attribute key_echo_attribute =
893
	__ATTR(key_echo, 0644, spk_var_show, spk_var_store);
894
static struct kobj_attribute no_interrupt_attribute =
895
	__ATTR(no_interrupt, 0644, spk_var_show, spk_var_store);
896
static struct kobj_attribute punc_level_attribute =
897
	__ATTR(punc_level, 0644, spk_var_show, spk_var_store);
898
static struct kobj_attribute reading_punc_attribute =
899
	__ATTR(reading_punc, 0644, spk_var_show, spk_var_store);
900
static struct kobj_attribute say_control_attribute =
901
	__ATTR(say_control, 0644, spk_var_show, spk_var_store);
902
static struct kobj_attribute say_word_ctl_attribute =
903
	__ATTR(say_word_ctl, 0644, spk_var_show, spk_var_store);
904
static struct kobj_attribute spell_delay_attribute =
905
	__ATTR(spell_delay, 0644, spk_var_show, spk_var_store);
906
907
908
909
910

/*
 * These attributes are i18n related.
 */
static struct kobj_attribute announcements_attribute =
911
	__ATTR(announcements, 0644, message_show, message_store);
912
static struct kobj_attribute characters_attribute =
913
	__ATTR(characters, 0644, chars_chartab_show,
914
	       chars_chartab_store);
915
static struct kobj_attribute chartab_attribute =
916
	__ATTR(chartab, 0644, chars_chartab_show,
917
	       chars_chartab_store);
918
static struct kobj_attribute ctl_keys_attribute =
919
	__ATTR(ctl_keys, 0644, message_show, message_store);
920
static struct kobj_attribute colors_attribute =
921
	__ATTR(colors, 0644, message_show, message_store);
922
static struct kobj_attribute formatted_attribute =
923
	__ATTR(formatted, 0644, message_show, message_store);
924
static struct kobj_attribute function_names_attribute =
925
	__ATTR(function_names, 0644, message_show, message_store);
926
static struct kobj_attribute key_names_attribute =
927
	__ATTR(key_names, 0644, message_show, message_store);
928
static struct kobj_attribute states_attribute =
929
	__ATTR(states, 0644, message_show, message_store);
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

/*
 * 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.
 */
981
static const struct attribute_group main_attr_group = {
982
983
984
	.attrs = main_attrs,
};

985
static const struct attribute_group i18n_attr_group = {
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
	.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);
1007
1008
1009
1010
	if (!accessibility_kobj) {
		retval = -ENOMEM;
		goto out;
	}
1011
1012
1013

	speakup_kobj = kobject_create_and_add("speakup", accessibility_kobj);
	if (!speakup_kobj) {
1014
1015
		retval = -ENOMEM;
		goto err_acc;
1016
1017
1018
1019
1020
	}

	/* Create the files associated with this kobject */
	retval = sysfs_create_group(speakup_kobj, &main_attr_group);
	if (retval)
1021
		goto err_speakup;
1022
1023
1024

	retval = sysfs_create_group(speakup_kobj, &i18n_attr_group);
	if (retval)
1025
1026
		goto err_group;

1027
	goto out;
1028

1029
1030
1031
1032
1033
1034
err_group:
	sysfs_remove_group(speakup_kobj, &main_attr_group);
err_speakup:
	kobject_put(speakup_kobj);
err_acc:
	kobject_put(accessibility_kobj);
1035
out:
1036
1037
1038
1039
1040
	return retval;
}

void speakup_kobj_exit(void)
{
1041
1042
	sysfs_remove_group(speakup_kobj, &i18n_attr_group);
	sysfs_remove_group(speakup_kobj, &main_attr_group);
1043
1044
1045
	kobject_put(speakup_kobj);
	kobject_put(accessibility_kobj);
}