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,
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				  struct kobj_attribute *attr, char *buf)
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{
	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,
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				       int rejected, int do_characters)
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{
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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",
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			       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,
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				   struct kobj_attribute *attr,
				   const char *buf, size_t count)
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{
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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,
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				   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,
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			   char *buf)
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{
	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,
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			    const char *buf, size_t count)
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{
	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,
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			(int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
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		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,
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			(int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
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	} 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,
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			    const char *buf, size_t count)
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{
	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,
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			  char *buf)
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{
	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,
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			   const char *buf, size_t count)
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{
	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 && (!strcmp(new_synth_name, synth->name))) {
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		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,
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				  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,
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			    char *buf)
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{
	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,
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			 char *buf)
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{
	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",
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			p_header->var_id);
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		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,
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			  const char *buf, size_t count)
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{
	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",
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			p_header->var_id);
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		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,
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		     char *buf)
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{
	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",
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			     param->name, param->var_type);
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		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,
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					   int *synth_default_value, int idx)
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600
601
602
603
604
605
606
607
608
609
610
611
612
{
	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);
		}
	}
}

613
614
615
616
617
/*
 * 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,
618
		      const char *buf, size_t count)
619
620
621
622
623
624
{
	struct st_var_header *param;
	int ret;
	int len;
	char *cp;
	struct var_t *var_data;
625
	long value;
626
627
	unsigned long flags;

628
	param = spk_var_header_by_name(attr->attr.name);
629
	if (!param)
630
		return -EINVAL;
631
	if (!param->data)
632
633
		return 0;
	ret = 0;
634
635
	cp = (char *)buf;
	string_unescape_any_inplace(cp);
636

637
	spin_lock_irqsave(&speakup_info.spinlock, flags);
638
639
640
641
642
643
644
645
646
	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;
647
648
649
		if (kstrtol(cp, 10, &value) == 0)
			ret = spk_set_num_var(value, param, len);
		else
650
			pr_warn("overflow or parsing error has occurred");
651
		if (ret == -ERANGE) {
652
653
			var_data = param->data;
			pr_warn("value for %s out of range, expect %d to %d\n",
654
				param->name,
655
656
				var_data->u.n.low, var_data->u.n.high);
		}
657
658
659
660
661

	       /*
		* If voice was just changed, we might need to reset our default
		* pitch and volume.
		*/
662
663
664
665
		if (param->var_id == VOICE && synth &&
		    (ret == 0 || ret == -ERESTART)) {
			var_data = param->data;
			value = var_data->u.n.value;
666
			spk_reset_default_value("pitch", synth->default_pitch,
667
						value);
668
			spk_reset_default_value("vol", synth->default_vol,
669
						value);
670
		}
671
672
		break;
	case VAR_STRING:
673
674
		len = strlen(cp);
		if ((len >= 1) && (cp[len - 1] == '\n'))
675
			--len;
676
677
		if ((len >= 2) && (cp[0] == '"') && (cp[len - 1] == '"')) {
			++cp;
678
679
680
			len -= 2;
		}
		cp[len] = '\0';
681
		ret = spk_set_string_var(cp, param, len);
682
		if (ret == -E2BIG)
683
			pr_warn("value too long for %s\n",
684
				param->name);
685
686
687
688
689
690
		break;
	default:
		pr_warn("%s unknown type %d\n",
			param->name, (int)param->var_type);
	break;
	}
691
	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
692

693
	if (ret == -ERESTART)
694
		pr_info("%s reset to default value\n", param->name);
695
696
697
698
699
700
701
702
703
	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,
704
				   enum msg_index_t last)
705
706
707
708
709
710
711
712
713
714
715
716
{
	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",
717
				    index, spk_msg_get(cursor));
718
719
720
721
722
723
724
725
		buf_pointer += printed;
		bufsize -= printed;
	}

	return buf_pointer - buf;
}

static void report_msg_status(int reset, int received, int used,
726
			      int rejected, char *groupname)
727
728
729
730
731
732
733
{
	int len;
	char buf[160];

	if (reset) {
		pr_info("i18n messages from group %s reset to defaults\n",
			groupname);
734
	} else if (received) {
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,
747
				    struct msg_group_t *group)
748
{
749
	char *cp = (char *)buf;
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
782
	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;
		}

783
		if (!isdigit(*cp)) {
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
809
			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;
		}

810
		msg_stored = spk_msg_set(curmessage, temp, desc_length);
811
812
813
814
815
816
817
		if (msg_stored < 0) {
			retval = msg_stored;
			if (msg_stored == -ENOMEM)
				reset = 1;
			break;
		}

818
819
		used++;

820
821
822
823
		cp = linefeed + 1;
	}

	if (reset)
824
		spk_reset_msg_group(group);
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,
831
			    struct kobj_attribute *attr, char *buf)
832
833
{
	ssize_t retval = 0;
834
	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
835
836
	unsigned long flags;

837
838
839
	if (WARN_ON(!group))
		return -EINVAL;

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

static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
847
			     const char *buf, size_t count)
848
{
849
	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
850

851
852
853
	if (WARN_ON(!group))
		return -EINVAL;

854
	return message_store_helper(buf, count, group);
855
856
857
858
859
860
}

/*
 * Declare the attributes.
 */
static struct kobj_attribute keymap_attribute =
861
	__ATTR_RW(keymap);
862
static struct kobj_attribute silent_attribute =
863
	__ATTR_WO(silent);
864
static struct kobj_attribute synth_attribute =
865
	__ATTR_RW(synth);
866
static struct kobj_attribute synth_direct_attribute =
867
	__ATTR_WO(synth_direct);
868
869
870
871
static struct kobj_attribute version_attribute =
	__ATTR_RO(version);

static struct kobj_attribute delimiters_attribute =
872
	__ATTR(delimiters, 0644, punc_show, punc_store);
873
static struct kobj_attribute ex_num_attribute =
874
	__ATTR(ex_num, 0644, punc_show, punc_store);
875
static struct kobj_attribute punc_all_attribute =
876
	__ATTR(punc_all, 0644, punc_show, punc_store);
877
static struct kobj_attribute punc_most_attribute =
878
	__ATTR(punc_most, 0644, punc_show, punc_store);
879
static struct kobj_attribute punc_some_attribute =
880
	__ATTR(punc_some, 0644, punc_show, punc_store);
881
static struct kobj_attribute repeats_attribute =
882
	__ATTR(repeats, 0644, punc_show, punc_store);
883
884

static struct kobj_attribute attrib_bleep_attribute =
885
	__ATTR(attrib_bleep, 0644, spk_var_show, spk_var_store);
886
static struct kobj_attribute bell_pos_attribute =
887
	__ATTR(bell_pos, 0644, spk_var_show, spk_var_store);
888
static struct kobj_attribute bleep_time_attribute =
889
	__ATTR(bleep_time, 0644, spk_var_show, spk_var_store);
890
static struct kobj_attribute bleeps_attribute =
891
	__ATTR(bleeps, 0644, spk_var_show, spk_var_store);
892
static struct kobj_attribute cursor_time_attribute =
893
	__ATTR(cursor_time, 0644, spk_var_show, spk_var_store);
894
static struct kobj_attribute key_echo_attribute =
895
	__ATTR(key_echo, 0644, spk_var_show, spk_var_store);
896
static struct kobj_attribute no_interrupt_attribute =
897
	__ATTR(no_interrupt, 0644, spk_var_show, spk_var_store);
898
static struct kobj_attribute punc_level_attribute =
899
	__ATTR(punc_level, 0644, spk_var_show, spk_var_store);
900
static struct kobj_attribute reading_punc_attribute =
901
	__ATTR(reading_punc, 0644, spk_var_show, spk_var_store);
902
static struct kobj_attribute say_control_attribute =
903
	__ATTR(say_control, 0644, spk_var_show, spk_var_store);
904
static struct kobj_attribute say_word_ctl_attribute =
905
	__ATTR(say_word_ctl, 0644, spk_var_show, spk_var_store);
906
static struct kobj_attribute spell_delay_attribute =
907
	__ATTR(spell_delay, 0644, spk_var_show, spk_var_store);
908
909
910
911
912

/*
 * These attributes are i18n related.
 */
static struct kobj_attribute announcements_attribute =
913
	__ATTR(announcements, 0644, message_show, message_store);
914
static struct kobj_attribute characters_attribute =
915
	__ATTR(characters, 0644, chars_chartab_show,
916
	       chars_chartab_store);
917
static struct kobj_attribute chartab_attribute =
918
	__ATTR(chartab, 0644, chars_chartab_show,
919
	       chars_chartab_store);
920
static struct kobj_attribute ctl_keys_attribute =
921
	__ATTR(ctl_keys, 0644, message_show, message_store);
922
static struct kobj_attribute colors_attribute =
923
	__ATTR(colors, 0644, message_show, message_store);
924
static struct kobj_attribute formatted_attribute =
925
	__ATTR(formatted, 0644, message_show, message_store);
926
static struct kobj_attribute function_names_attribute =
927
	__ATTR(function_names, 0644, message_show, message_store);
928
static struct kobj_attribute key_names_attribute =
929
	__ATTR(key_names, 0644, message_show, message_store);
930
static struct kobj_attribute states_attribute =
931
	__ATTR(states, 0644, message_show, message_store);
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

/*
 * 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.
 */
983
static const struct attribute_group main_attr_group = {
984
985
986
	.attrs = main_attrs,
};

987
static const struct attribute_group i18n_attr_group = {
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
	.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);
1009
1010
1011
1012
	if (!accessibility_kobj) {
		retval = -ENOMEM;
		goto out;
	}
1013
1014
1015

	speakup_kobj = kobject_create_and_add("speakup", accessibility_kobj);
	if (!speakup_kobj) {
1016
1017
		retval = -ENOMEM;
		goto err_acc;
1018
1019
1020
1021
1022
	}

	/* Create the files associated with this kobject */
	retval = sysfs_create_group(speakup_kobj, &main_attr_group);
	if (retval)
1023
		goto err_speakup;
1024
1025
1026

	retval = sysfs_create_group(speakup_kobj, &i18n_attr_group);
	if (retval)
1027
1028
		goto err_group;

1029
	goto out;
1030

1031
1032
1033
1034
1035
1036
err_group:
	sysfs_remove_group(speakup_kobj, &main_attr_group);
err_speakup:
	kobject_put(speakup_kobj);
err_acc:
	kobject_put(accessibility_kobj);
1037
out:
1038
1039
1040
1041
1042
	return retval;
}

void speakup_kobj_exit(void)
{
1043
1044
	sysfs_remove_group(speakup_kobj, &i18n_attr_group);
	sysfs_remove_group(speakup_kobj, &main_attr_group);
1045
1046
1047
	kobject_put(speakup_kobj);
	kobject_put(accessibility_kobj);
}