static ssize_t
hysdn_conf_write(struct file *file, const char __user *buf, size_t count, loff_t * off)
{
struct conf_writedata *cnf;
int i;
unsigned char ch, *cp;
if (!count)
return (0); /* nothing to handle */
if (!(cnf = file->private_data))
return (-EFAULT); /* should never happen */
if (cnf->state == CONF_STATE_DETECT) { /* auto detect cnf or pof data */
if (copy_from_user(&ch, buf, 1)) /* get first char for detect */
return (-EFAULT);
if (ch == 0x1A) {
/* we detected a pof file */
if ((cnf->needed_size = pof_write_open(cnf->card, &cnf->pof_buffer)) <= 0)
return (cnf->needed_size); /* an error occurred -> exit */
cnf->buf_size = 0; /* buffer is empty */
cnf->state = CONF_STATE_POF; /* new state */
} else {
/* conf data has been detected */
cnf->buf_size = 0; /* buffer is empty */
cnf->state = CONF_STATE_CONF; /* requested conf data write */
if (cnf->card->state != CARD_STATE_RUN)
return (-ERR_NOT_BOOTED);
cnf->conf_line[CONF_LINE_LEN - 1] = 0; /* limit string length */
cnf->channel = 4098; /* default channel for output */
}
} /* state was auto detect */
if (cnf->state == CONF_STATE_POF) { /* pof write active */
i = cnf->needed_size - cnf->buf_size; /* bytes still missing for write */
if (i <= 0)
return (-EINVAL); /* size error handling pof */
if (i < count)
count = i; /* limit requested number of bytes */
if (copy_from_user(cnf->pof_buffer + cnf->buf_size, buf, count))
return (-EFAULT); /* error while copying */
cnf->buf_size += count;
if (cnf->needed_size == cnf->buf_size) {
cnf->needed_size = pof_write_buffer(cnf->card, cnf->buf_size); /* write data */
if (cnf->needed_size <= 0) {
cnf->card->state = CARD_STATE_BOOTERR; /* show boot error */
return (cnf->needed_size); /* an error occurred */
}
cnf->buf_size = 0; /* buffer is empty again */
}
}
/* pof write active */
else { /* conf write active */
if (cnf->card->state != CARD_STATE_RUN) {
if (cnf->card->debug_flags & LOG_CNF_MISC)
hysdn_addlog(cnf->card, "cnf write denied -> not booted");
return (-ERR_NOT_BOOTED);
}
i = (CONF_LINE_LEN - 1) - cnf->buf_size; /* bytes available in buffer */
if (i > 0) {
/* copy remaining bytes into buffer */
if (count > i)
count = i; /* limit transfer */
if (copy_from_user(cnf->conf_line + cnf->buf_size, buf, count))
return (-EFAULT); /* error while copying */
i = count; /* number of chars in buffer */
cp = cnf->conf_line + cnf->buf_size;
while (i) {
/* search for end of line */
if ((*cp < ' ') && (*cp != 9))
break; /* end of line found */
cp++;
i--;
} /* search for end of line */
if (i) {
/* delimiter found */
*cp++ = 0; /* string termination */
count -= (i - 1); /* subtract remaining bytes from count */
while ((i) && (*cp < ' ') && (*cp != 9)) {
i--; /* discard next char */
count++; /* mark as read */
cp++; /* next char */
}
cnf->buf_size = 0; /* buffer is empty after transfer */
if ((i = process_line(cnf)) < 0) /* handle the line */
count = i; /* return the error */
}
/* delimiter found */
else {
cnf->buf_size += count; /* add chars to string */
if (cnf->buf_size >= CONF_LINE_LEN - 1) {
if (cnf->card->debug_flags & LOG_CNF_MISC)
hysdn_addlog(cnf->card, "cnf line too long %d chars pos %d", cnf->buf_size, count);
return (-ERR_CONF_LONG);
}
} /* not delimited */
}
/* copy remaining bytes into buffer */
else {
if (cnf->card->debug_flags & LOG_CNF_MISC)
hysdn_addlog(cnf->card, "cnf line too long");
return (-ERR_CONF_LONG);
}
} /* conf write active */
return (count);
} /* hysdn_conf_write */
static ssize_t
hysdn_conf_write(struct file *file, const char __user *buf, size_t count, loff_t *off)
{
struct conf_writedata *cnf;
int i;
unsigned char ch, *cp;
if (!count)
return (0); /* */
if (!(cnf = file->private_data))
return (-EFAULT); /* */
if (cnf->state == CONF_STATE_DETECT) { /* */
if (copy_from_user(&ch, buf, 1)) /* */
return (-EFAULT);
if (ch == 0x1A) {
/* */
if ((cnf->needed_size = pof_write_open(cnf->card, &cnf->pof_buffer)) <= 0)
return (cnf->needed_size); /* */
cnf->buf_size = 0; /* */
cnf->state = CONF_STATE_POF; /* */
} else {
/* */
cnf->buf_size = 0; /* */
cnf->state = CONF_STATE_CONF; /* */
if (cnf->card->state != CARD_STATE_RUN)
return (-ERR_NOT_BOOTED);
cnf->conf_line[CONF_LINE_LEN - 1] = 0; /* */
cnf->channel = 4098; /* */
}
} /* */
if (cnf->state == CONF_STATE_POF) { /* */
i = cnf->needed_size - cnf->buf_size; /* */
if (i <= 0)
return (-EINVAL); /* */
if (i < count)
count = i; /* */
if (copy_from_user(cnf->pof_buffer + cnf->buf_size, buf, count))
return (-EFAULT); /* */
cnf->buf_size += count;
if (cnf->needed_size == cnf->buf_size) {
cnf->needed_size = pof_write_buffer(cnf->card, cnf->buf_size); /* */
if (cnf->needed_size <= 0) {
cnf->card->state = CARD_STATE_BOOTERR; /* */
return (cnf->needed_size); /* */
}
cnf->buf_size = 0; /* */
}
}
/* */
else { /* */
if (cnf->card->state != CARD_STATE_RUN) {
if (cnf->card->debug_flags & LOG_CNF_MISC)
hysdn_addlog(cnf->card, "cnf write denied -> not booted");
return (-ERR_NOT_BOOTED);
}
i = (CONF_LINE_LEN - 1) - cnf->buf_size; /* */
if (i > 0) {
/* */
if (count > i)
count = i; /* */
if (copy_from_user(cnf->conf_line + cnf->buf_size, buf, count))
return (-EFAULT); /* */
i = count; /* */
cp = cnf->conf_line + cnf->buf_size;
while (i) {
/* */
if ((*cp < ' ') && (*cp != 9))
break; /* */
cp++;
i--;
} /* */
if (i) {
/* */
*cp++ = 0; /* */
count -= (i - 1); /* */
while ((i) && (*cp < ' ') && (*cp != 9)) {
i--; /* */
count++; /* */
cp++; /* */
}
cnf->buf_size = 0; /* */
if ((i = process_line(cnf)) < 0) /* */
count = i; /* */
}
/* */
else {
cnf->buf_size += count; /* */
if (cnf->buf_size >= CONF_LINE_LEN - 1) {
if (cnf->card->debug_flags & LOG_CNF_MISC)
hysdn_addlog(cnf->card, "cnf line too long %d chars pos %d", cnf->buf_size, count);
return (-ERR_CONF_LONG);
}
} /* */
}
/* */
else {
if (cnf->card->debug_flags & LOG_CNF_MISC)
hysdn_addlog(cnf->card, "cnf line too long");
return (-ERR_CONF_LONG);
}
} /* */
return (count);
} /* */
