devfs_find
struct devfs_dirent *devfs_find(struct devfs_dirent *, const char *, int,
de = devfs_find(dd, s, q - s, 0);
de = devfs_find(dd, s, q - s, DT_DIR);
de = devfs_find(dd, s, q - s, DT_LNK);
de = devfs_find(dd, cnp->cn_nameptr, cnp->cn_namelen, 0);
de_covered = devfs_find(dd, de->de_dirent->d_name,
de_covered = devfs_find(dd, de->de_dirent->d_name,