func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
	return fcntl(int(fd), cmd, arg)
}

// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
	_, err := fcntlPtr(int(fd), cmd, unsafe.Pointer(lk))
	return err
}

//sys	ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)

//sys	FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl

// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
//sys	FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl

//sys	fcntl(fd int, cmd int, arg int) (val int, err error)

//sys	fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range

func Fsync(fd int) error {

}

//sys	fcntl(fd int, cmd int, arg int) (val int, err error)

// FcntlFlock performs a fcntl syscall for the [F_GETLK], [F_SETLK] or [F_SETLKW] command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&libc_fcntl)), 3, uintptr(fd), uintptr(cmd), uintptr(unsafe.Pointer(lk)), 0, 0, 0)
	if e1 != 0 {
		return e1
	}
	return nil
}

	r = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) {
	_, e1 := callfcntl(fd, cmd, uintptr(unsafe.Pointer(lk)))
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

	var err error
	if errno != 0 {
		err = errno
	}
	return int(valptr), err
}

// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procfcntl)), 3, uintptr(fd), uintptr(cmd), uintptr(unsafe.Pointer(lk)), 0, 0, 0)
	if e1 != 0 {
		return e1
	}
	return nil
}

	r = int(r0)
	if r0 == -1 && er != nil {
		err = er
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) {
	r0, er := C.fcntl(C.uintptr_t(fd), C.int(cmd), C.uintptr_t(uintptr(unsafe.Pointer(lk))))
	if r0 == -1 && er != nil {
		err = er
	}
	return
}

                @Inject
                abstract FileLockManager getFileLockManager()

                @Inject
                abstract ProjectLayout getProjectLayout()

                @TaskAction
                void lockIt() {
                    def lock
                    try {

This causes builds to break without any obvious change, and worse, can be caused by a transitive dependency that the build author has no control over.

To achieve https://reproducible-builds.org/[reproducible builds], it is necessary to _lock_ versions of dependencies and transitive dependencies such that a build with the same inputs will always resolve the same module versions.
This is called _dependency locking_.

It enables, amongst others, the following scenarios:

		$2 == "BRKINT" ||
		$2 == "HUPCL" ||
		$2 == "PENDIN" ||
		$2 == "TOSTOP" ||
		$2 ~ /^PAR/ ||
		$2 ~ /^SIG[^_]/ ||
		$2 ~ /^O[CNPFP][A-Z]+[^_][A-Z]+$/ ||
		$2 ~ /^IN_/ ||
		$2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
		$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
		$2 == "ICMPV6_FILTER" ||
		$2 == "SOMAXCONN" ||
		$2 == "NAME_MAX" ||

	// Stack layout, depending on call path:
	//  x(SP)   vDSO            INVOKE_SYSCALL
	//    12    ts.tv_nsec      ts.tv_nsec
	//     8    ts.tv_sec       ts.tv_sec
	//     4    &ts             -
	//     0    CLOCK_<id>      -

	MOVL	runtime·vdsoClockgettimeSym(SB), AX
	CMPL	AX, $0
	JEQ	fallback

	LEAL	8(SP), BX	// &ts (struct timespec)
	MOVL	BX, 4(SP)
	MOVL	$0, 0(SP)	// CLOCK_REALTIME
	CALL	AX
	JMP finish