struct root_hold_token *
root_mount_hold(const char *identifier)
{
struct root_hold_token *h;
if (root_mounted())
return (NULL);
h = malloc(sizeof *h, M_DEVBUF, M_ZERO | M_WAITOK);
h->who = identifier;
mtx_lock(&mountlist_mtx);
LIST_INSERT_HEAD(&root_holds, h, list);
mtx_unlock(&mountlist_mtx);
return (h);
}
struct _buf *
kobj_open_file(const char *file)
{
struct _buf *out;
out = kmem_alloc(sizeof(*out), KM_SLEEP);
out->mounted = root_mounted();
/*
* If root is already mounted we read file using file system,
* if not, we use loader.
*/
if (out->mounted)
out->ptr = kobj_open_file_vnode(file);
else
out->ptr = kobj_open_file_loader(file);
if (out->ptr == NULL) {
kmem_free(out, sizeof(*out));
return ((struct _buf *)-1);
}
return (out);
}