kobjects.c

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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 <[email protected]>
 * 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>
#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;

    spk_lock(flags);
    *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",
                    i, characters[i]);
        } 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;
    }
    spk_unlock(flags);
    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)
{
    char *object_type[] = {
        "character class entries",
        "character descriptions",
    };
    int len;
    char buf[80];

    if (reset) {
        pr_info("%s reset to defaults\n", object_type[do_characters]);
    } else if (received) {
        len = snprintf(buf, sizeof(buf),
                " updated %d of %d %s\n",
                used, received, object_type[do_characters]);
        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;

    spk_lock(flags);
    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;
        }

        if (!isdigit(*cp)) {
            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);
            if (!desc) {
                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) {
            if (characters[index] != default_chars[index])
                kfree(characters[index]);
            characters[index] = desc;
            used++;
        } else {
            charclass = chartab_get_value(keyword);
            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)
            reset_default_chars();
        else
            reset_default_chartab();
    }

    spk_unlock(flags);
    report_char_chartab_status(reset, received, used, rejected,
        do_characters);
    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;
    spk_lock(flags);
    cp1 = key_buf + SHIFT_TBL_SIZE;
    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 */
    /* dump num_keys+1 as first row is shift states + flags,
     * each subsequent row is key + states */
    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);
    spk_unlock(flags);
    return (int)(cp-buf);
}

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

    spk_lock(flags);
    in_buff = kmemdup(buf, count + 1, GFP_ATOMIC);
    if (!in_buff) {
        spk_unlock(flags);
        return -ENOMEM;
    }
    if (strchr("dDrR", *in_buff)) {
        set_key_info(key_defaults, key_buf);
        pr_info("keymap set to default values\n");
        kfree(in_buff);
        spk_unlock(flags);
        return count;
    }
    if (in_buff[count - 1] == '\n')
        in_buff[count - 1] = '\0';
    cp = in_buff;
    cp1 = (u_char *)in_buff;
    for (i = 0; i < 3; i++) {
        cp = s2uchar(cp, cp1);
        cp1++;
    }
    i = (int)cp1[-2]+1;
    i *= (int)cp1[-1]+1;
    i += 2; /* 0 and last map ver */
    if (cp1[-3] != KEY_MAP_VER || cp1[-1] > 10 ||
            i+SHIFT_TBL_SIZE+4 >= sizeof(key_buf)) {
        pr_warn("i %d %d %d %d\n", i,
                (int)cp1[-3], (int)cp1[-2], (int)cp1[-1]);
        kfree(in_buff);
        spk_unlock(flags);
        return -EINVAL;
    }
    while (--i >= 0) {
        cp = s2uchar(cp, cp1);
        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 {
        if (set_key_info(in_buff, key_buf)) {
            set_key_info(key_defaults, key_buf);
            ret = -EINVAL;
            pr_warn("set key failed\n");
        }
    }
    kfree(in_buff);
    spk_unlock(flags);
    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);
    if (len > 0 && len < 3) {
        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;
    }
    spk_lock(flags);
    if (ch&2) {
        shut = 1;
        do_flush();
    } else {
        shut = 0;
    }
    if (ch&4)
        shut |= 0x40;
    if (ch&1)
        spk_shut_up |= shut;
    else
        spk_shut_up &= ~shut;
    spk_unlock(flags);
    return count;
}

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

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

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

    len = strlen(buf);
    if (len < 2 || len > 9)
        return -EINVAL;
    strncpy(new_synth_name, buf, len);
    if (new_synth_name[len - 1] == '\n')
        len--;
    new_synth_name[len] = '\0';
    strlwr(new_synth_name);
    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.
 */
static ssize_t synth_direct_store(struct kobject *kobj,
    struct kobj_attribute *attr, const char *buf, size_t count)
{
    u_char tmp[256];
    int len;
    int bytes;
    const char *ptr = buf;

    if (!synth)
        return -EPERM;

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

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

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

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

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

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

    spk_lock(flags);
    pb = (struct st_bits_data *) &punc_info[var->value];
    mask = pb->mask;
    for (i = 33; i < 128; i++) {
        if (!(spk_chartab[i]&mask))
            continue;
        *cp++ = (char)i;
    }
    spk_unlock(flags);
    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;

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

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

    strncpy(punc_buf, buf, x);

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

    spk_lock(flags);

    if (*punc_buf == 'd' || *punc_buf == 'r')
        x = set_mask_bits(0, var->value, 3);
    else
        x = set_mask_bits(punc_buf, var->value, 3);

    spk_unlock(flags);
    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;

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

    spk_lock(flags);
    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
                    cp1 += sprintf(cp1, "\\""x%02x", ch);
            }
            *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;
    }
    spk_unlock(flags);
    return rv;
}
EXPORT_SYMBOL_GPL(spk_var_show);

/*
 * 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;
    int value;
    unsigned long flags;

    param = var_header_by_name(attr->attr.name);
    if (param == NULL)
        return -EINVAL;
    if (param->data == NULL)
        return 0;
    ret = 0;
    cp = xlate((char *) buf);

    spk_lock(flags);
    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;
        speakup_s2i(cp, &value);
        ret = set_num_var(value, param, len);
        if (ret == E_RANGE) {
            var_data = param->data;
            pr_warn("value for %s out of range, expect %d to %d\n",
                attr->attr.name,
                var_data->u.n.low, var_data->u.n.high);
        }
        break;
    case VAR_STRING:
        len = strlen(buf);
        if ((len >= 1) && (buf[len - 1] == '\n'))
            --len;
        if ((len >= 2) && (buf[0] == '"') && (buf[len - 1] == '"')) {
            ++buf;
            len -= 2;
        }
        cp = (char *) buf;
        cp[len] = '\0';
        ret = set_string_var(buf, param, len);
        if (ret == E_TOOLONG)
            pr_warn("value too long for %s\n",
                    attr->attr.name);
        break;
    default:
        pr_warn("%s unknown type %d\n",
            param->name, (int)param->var_type);
    break;
    }
    /*
     * If voice was just changed, we might need to reset our default
     * pitch and volume.
     */
    if (strcmp(attr->attr.name, "voice") == 0) {
        if (synth && synth->default_pitch) {
            param = var_header_by_name("pitch");
            if (param)  {
                set_num_var(synth->default_pitch[value], param,
                    E_NEW_DEFAULT);
                set_num_var(0, param, E_DEFAULT);
            }
        }
        if (synth && synth->default_vol) {
            param = var_header_by_name("vol");
            if (param)  {
                set_num_var(synth->default_vol[value], param,
                    E_NEW_DEFAULT);
                set_num_var(0, param, E_DEFAULT);
            }
        }
    }
    spk_unlock(flags);

    if (ret == SET_DEFAULT)
        pr_info("%s reset to default value\n", attr->attr.name);
    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",
            index, msg_get(cursor));
        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);
    } else if (received) {
        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;
        }

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

        msg_stored = msg_set(curmessage, temp, desc_length);
        if (msg_stored < 0) {
            retval = msg_stored;
            if (msg_stored == -ENOMEM)
                reset = 1;
            break;
        } else {
            used++;
        }

        cp = linefeed + 1;
    }

    if (reset)
        reset_msg_group(group);

    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;
    struct msg_group_t *group = find_msg_group(attr->attr.name);
    unsigned long flags;

    BUG_ON(!group);
    spk_lock(flags);
    retval = message_show_helper(buf, group->start, group->end);
    spk_unlock(flags);
    return retval;
}

static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
    const char *buf, size_t count)
{
    ssize_t retval = 0;
    struct msg_group_t *group = find_msg_group(attr->attr.name);

    BUG_ON(!group);
    retval = message_store_helper(buf, count, group);
    return retval;
}

/*
 * Declare the attributes.
 */
static struct kobj_attribute keymap_attribute =
    __ATTR(keymap, ROOT_W, keymap_show, keymap_store);
static struct kobj_attribute silent_attribute =
    __ATTR(silent, USER_W, NULL, silent_store);
static struct kobj_attribute synth_attribute =
    __ATTR(synth, USER_RW, synth_show, synth_store);
static struct kobj_attribute synth_direct_attribute =
    __ATTR(synth_direct, USER_W, NULL, synth_direct_store);
static struct kobj_attribute version_attribute =
    __ATTR_RO(version);

static struct kobj_attribute delimiters_attribute =
    __ATTR(delimiters, USER_RW, punc_show, punc_store);
static struct kobj_attribute ex_num_attribute =
    __ATTR(ex_num, USER_RW, punc_show, punc_store);
static struct kobj_attribute punc_all_attribute =
    __ATTR(punc_all, USER_RW, punc_show, punc_store);
static struct kobj_attribute punc_most_attribute =
    __ATTR(punc_most, USER_RW, punc_show, punc_store);
static struct kobj_attribute punc_some_attribute =
    __ATTR(punc_some, USER_RW, punc_show, punc_store);
static struct kobj_attribute repeats_attribute =
    __ATTR(repeats, USER_RW, punc_show, punc_store);

static struct kobj_attribute attrib_bleep_attribute =
    __ATTR(attrib_bleep, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute bell_pos_attribute =
    __ATTR(bell_pos, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute bleep_time_attribute =
    __ATTR(bleep_time, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute bleeps_attribute =
    __ATTR(bleeps, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute cursor_time_attribute =
    __ATTR(cursor_time, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute key_echo_attribute =
    __ATTR(key_echo, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute no_interrupt_attribute =
    __ATTR(no_interrupt, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute punc_level_attribute =
    __ATTR(punc_level, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute reading_punc_attribute =
    __ATTR(reading_punc, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute say_control_attribute =
    __ATTR(say_control, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute say_word_ctl_attribute =
    __ATTR(say_word_ctl, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute spell_delay_attribute =
    __ATTR(spell_delay, USER_RW, spk_var_show, spk_var_store);

/*
 * These attributes are i18n related.
 */
static struct kobj_attribute announcements_attribute =
    __ATTR(announcements, USER_RW, message_show, message_store);
static struct kobj_attribute characters_attribute =
    __ATTR(characters, USER_RW, chars_chartab_show, chars_chartab_store);
static struct kobj_attribute chartab_attribute =
    __ATTR(chartab, USER_RW, chars_chartab_show, chars_chartab_store);
static struct kobj_attribute ctl_keys_attribute =
    __ATTR(ctl_keys, USER_RW, message_show, message_store);
static struct kobj_attribute colors_attribute =
    __ATTR(colors, USER_RW, message_show, message_store);
static struct kobj_attribute formatted_attribute =
    __ATTR(formatted, USER_RW, message_show, message_store);
static struct kobj_attribute function_names_attribute =
    __ATTR(function_names, USER_RW, message_show, message_store);
static struct kobj_attribute key_names_attribute =
    __ATTR(key_names, USER_RW, message_show, message_store);
static struct kobj_attribute states_attribute =
    __ATTR(states, USER_RW, message_show, message_store);

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

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

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

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

static struct kobject *accessibility_kobj;
struct kobject *speakup_kobj;

int speakup_kobj_init(void)
{
    int retval;

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

    speakup_kobj = kobject_create_and_add("speakup", accessibility_kobj);
    if (!speakup_kobj) {
        retval = -ENOMEM;
        goto err_acc;
    }

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

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

    goto out;

err_group:
    sysfs_remove_group(speakup_kobj, &main_attr_group);
err_speakup:
    kobject_put(speakup_kobj);
err_acc:
    kobject_put(accessibility_kobj);
out:
    return retval;
}

void speakup_kobj_exit(void)
{
    sysfs_remove_group(speakup_kobj, &i18n_attr_group);
    sysfs_remove_group(speakup_kobj, &main_attr_group);
    kobject_put(speakup_kobj);
    kobject_put(accessibility_kobj);
}