/*
* Check sanity of parameter control fields and if a path is present
* check that it is terminated and contains at least one "/".
*/
static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
{
int err;
err = check_dev_ioctl_version(cmd, param);
if (err) {
AUTOFS_WARN("invalid device control module version "
"supplied for cmd(0x%08x)", cmd);
goto out;
}
if (param->size > sizeof(*param)) {
err = invalid_str(param->path, param->size - sizeof(*param));
if (err) {
AUTOFS_WARN(
"path string terminator missing for cmd(0x%08x)",
cmd);
goto out;
}
err = check_name(param->path);
if (err) {
AUTOFS_WARN("invalid path supplied for cmd(0x%08x)",
cmd);
goto out;
}
}
err = 0;
out:
return err;
}
/*
* Check sanity of parameter control fields and if a path is present
* check that it has a "/" and is terminated.
*/
static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
{
int err = -EINVAL;
if (check_dev_ioctl_version(cmd, param)) {
AUTOFS_WARN("invalid device control module version "
"supplied for cmd(0x%08x)", cmd);
goto out;
}
if (param->size > sizeof(*param)) {
err = check_name(param->path);
if (err) {
AUTOFS_WARN("invalid path supplied for cmd(0x%08x)",
cmd);
goto out;
}
err = invalid_str(param->path,
(void *) ((size_t) param + param->size));
if (err) {
AUTOFS_WARN("invalid path supplied for cmd(0x%08x)",
cmd);
goto out;
}
}
err = 0;
out:
return err;
}
/*
* Check sanity of parameter control fields and if a path is present
* check that it is terminated and contains at least one "/".
*/
static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
{
int err;
err = check_dev_ioctl_version(cmd, param);
if (err) {
pr_warn("invalid device control module version "
"supplied for cmd(0x%08x)\n", cmd);
goto out;
}
if (param->size > AUTOFS_DEV_IOCTL_SIZE) {
err = invalid_str(param->path, param->size - AUTOFS_DEV_IOCTL_SIZE);
if (err) {
pr_warn(
"path string terminator missing for cmd(0x%08x)\n",
cmd);
goto out;
}
err = check_name(param->path);
if (err) {
pr_warn("invalid path supplied for cmd(0x%08x)\n",
cmd);
goto out;
}
} else {
unsigned int inr = _IOC_NR(cmd);
if (inr == AUTOFS_DEV_IOCTL_OPENMOUNT_CMD ||
inr == AUTOFS_DEV_IOCTL_REQUESTER_CMD ||
inr == AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD) {
err = -EINVAL;
goto out;
}
}
err = 0;
out:
return err;
}