static int acpi_proc_write( struct file *filp, const char __user *buff,
unsigned long len, void *data )
#endif
{
char input[2 * BUFFER_SIZE] = { '\0' };
union acpi_object *args;
int nargs, i;
char *method;
if (len > sizeof(input) - 1) {
printk(KERN_ERR "acpi_call: Input too long! (%lu)\n", len);
return -ENOSPC;
}
if (raw_copy_from_user( input, buff, len )) {
return -EFAULT;
}
input[len] = '\0';
if (input[len-1] == '\n')
input[len-1] = '\0';
method = parse_acpi_args(input, &nargs, &args);
if (method) {
do_acpi_call(method, nargs, args);
if (args) {
for (i=0; i<nargs; i++)
if (args[i].type == ACPI_TYPE_BUFFER)
kfree(args[i].buffer.pointer);
kfree(args);
}
}
return len;
}
static int copyin(void *to, const void __user *from, size_t n)
{
if (access_ok(VERIFY_READ, from, n)) {
kasan_check_write(to, n);
n = raw_copy_from_user(to, from, n);
}
return n;
}