int
sys_fmaster_ioctl(struct thread *td, struct fmaster_ioctl_args *uap)
{
enum fmaster_file_place place;
int error, lfd;
error = fmaster_get_vnode_info(td, uap->fd, &place, &lfd);
if (error != 0)
return (error);
if (place != FFP_MASTER)
return (ENOTTY);
return (kern_ioctl(td, lfd, uap->com, uap->data));
}
static int
parse_dir_md(char **conf)
{
struct stat sb;
struct thread *td;
struct md_ioctl *mdio;
char *path, *tok;
int error, fd, len;
td = curthread;
error = parse_token(conf, &tok);
if (error)
return (error);
len = strlen(tok);
mdio = malloc(sizeof(*mdio) + len + 1, M_TEMP, M_WAITOK | M_ZERO);
path = (void *)(mdio + 1);
bcopy(tok, path, len);
free(tok, M_TEMP);
/* Get file status. */
error = kern_stat(td, path, UIO_SYSSPACE, &sb);
if (error)
goto out;
/* Open /dev/mdctl so that we can attach/detach. */
error = kern_open(td, "/dev/" MDCTL_NAME, UIO_SYSSPACE, O_RDWR, 0);
if (error)
goto out;
fd = td->td_retval[0];
mdio->md_version = MDIOVERSION;
mdio->md_type = MD_VNODE;
if (root_mount_mddev != -1) {
mdio->md_unit = root_mount_mddev;
DROP_GIANT();
error = kern_ioctl(td, fd, MDIOCDETACH, (void *)mdio);
PICKUP_GIANT();
/* Ignore errors. We don't care. */
root_mount_mddev = -1;
}
mdio->md_file = (void *)(mdio + 1);
mdio->md_options = MD_AUTOUNIT | MD_READONLY;
mdio->md_mediasize = sb.st_size;
mdio->md_unit = 0;
DROP_GIANT();
error = kern_ioctl(td, fd, MDIOCATTACH, (void *)mdio);
PICKUP_GIANT();
if (error)
goto out;
if (mdio->md_unit > 9) {
printf("rootmount: too many md units\n");
mdio->md_file = NULL;
mdio->md_options = 0;
mdio->md_mediasize = 0;
DROP_GIANT();
error = kern_ioctl(td, fd, MDIOCDETACH, (void *)mdio);
PICKUP_GIANT();
/* Ignore errors. We don't care. */
error = ERANGE;
goto out;
}
root_mount_mddev = mdio->md_unit;
printf(MD_NAME "%u attached to %s\n", root_mount_mddev, mdio->md_file);
error = kern_close(td, fd);
out:
free(mdio, M_TEMP);
return (error);
}