| // Copyright 2020 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. |
| |
| package ld |
| |
| import ( |
| "syscall" |
| "unsafe" |
| ) |
| |
| func (out *OutBuf) fallocate(size uint64) error { |
| store := &syscall.Fstore_t{ |
| Flags: syscall.F_ALLOCATEALL, |
| Posmode: syscall.F_PEOFPOSMODE, |
| Offset: 0, |
| Length: int64(size), |
| } |
| |
| _, _, err := syscall.Syscall(syscall.SYS_FCNTL, uintptr(out.f.Fd()), syscall.F_PREALLOCATE, uintptr(unsafe.Pointer(store))) |
| if err != 0 { |
| return err |
| } |
| |
| return nil |
| } |
