static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
size_t nbytes, loff_t *ppos)
{
char *page, *p;
unsigned len;
if (nbytes == 0)
return 0;
if (nbytes >= PAGE_SIZE)
nbytes = PAGE_SIZE-1;
page = (char *)__get_free_page(GFP_KERNEL);
if (!page)
return -ENOMEM;
for (p = page, len = 0; len < nbytes; p++, len++) {
if (get_user(*p, buff++)) {
free_page((unsigned long)page);
return -EFAULT;
}
if (*p == '\0' || *p == '\n')
break;
}
*p = '\0';
if (!parse_qos(page))
printk("mpoa: proc_mpc_write: could not parse '%s'\n", page);
free_page((unsigned long)page);
return len;
}
static ssize_t proc_mpc_write(struct file *file, const char *buff,
size_t nbytes, loff_t *ppos)
{
int incoming, error, retval;
char *page, c;
const char *tmp;
if (nbytes < 0) return -EINVAL;
if (nbytes == 0) return 0;
if (nbytes > PAGE_SIZE) nbytes = PAGE_SIZE-1;
error = verify_area(VERIFY_READ, buff, nbytes);
if (error) return error;
page = (char *)__get_free_page(GFP_KERNEL);
if (page == NULL) return -ENOMEM;
incoming = 0;
tmp = buff;
while(incoming < nbytes){
if (get_user(c, tmp++)) return -EFAULT;
incoming++;
if (c == '\0' || c == '\n')
break;
}
retval = copy_from_user(page, buff, incoming);
if (retval != 0) {
printk("mpoa: proc_mpc_write: copy_from_user() failed\n");
return -EFAULT;
}
*ppos += incoming;
page[incoming] = '\0';
retval = parse_qos(page, incoming);
if (retval == 0)
printk("mpoa: proc_mpc_write: could not parse '%s'\n", page);
free_page((unsigned long)page);
return nbytes;
}
