This is xnu-11215.1.10. See this file in:
/*
 * Copyright (c) 2008-2017, 2023 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#ifndef _FSGETPATH_H_
#define _FSGETPATH_H_

#ifndef KERNEL

#include <machine/_types.h>
#include <sys/_types/_ssize_t.h>
#include <sys/_types/_size_t.h>
#include <sys/_types/_fsid_t.h>
#include <_types/_uint64_t.h>
#include <Availability.h>

__BEGIN_DECLS

/*
 * Obtain the full pathname of a file system object by id.
 */
ssize_t fsgetpath(char *, size_t, fsid_t *, uint64_t) __OSX_AVAILABLE(10.13) __IOS_AVAILABLE(11.0) __TVOS_AVAILABLE(11.0) __WATCHOS_AVAILABLE(4.0);

__END_DECLS

#endif /* KERNEL */

#if PRIVATE
#include <sys/fsgetpath_private.h>
#endif

#endif /* !_FSGETPATH_H_ */