src/cmd/link/internal/ld/outbuf_freebsd.go

// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build freebsd && go1.21

package ld

import (
	"internal/syscall/unix"
	"syscall"
)

func (out *OutBuf) fallocate(size uint64) error {
	err := unix.PosixFallocate(int(out.f.Fd()), 0, int64(size))
	// ZFS on FreeBSD does not support posix_fallocate and returns EINVAL in that case.
	if err == syscall.EINVAL {
		return errNoFallocate
	}
	return err
}