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cmd/link/internal/ld, internal/syscall/unix: use posix_fallocate on freebsd

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The posix_fallocate system call is available since FreeBSD 9.0, see
https://man.freebsd.org/cgi/man.cgi?query=posix_fallocate

Change-Id: Ie65e0a44341909707617d3b0d9a4f1710c45b935
Reviewed-on: https://go-review.googlesource.com/c/go/+/478035
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Tobias Klauser 2023-03-27 20:52:43 +02:00 committed by Gopher Robot
parent bf9d9b7dba
commit ed1cf6ab3e
6 changed files with 35 additions and 5 deletions
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3
src/cmd/dist/buildtool.go vendored
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@ -68,10 +68,11 @@ var bootstrapDirs = []string{
"internal/goroot",
"internal/goversion",
"internal/pkgbits",
"internal/platform",
"internal/profile",
"internal/race",
"internal/saferio",
"internal/platform",
"internal/syscall/unix",
"internal/types/errors",
"internal/unsafeheader",
"internal/xcoff",

3
src/cmd/link/internal/ld/fallocate_test.go
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@ -2,8 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build darwin || linux
// +build darwin linux
//go:build darwin || (freebsd && go1.21) || linux
package ld

13
src/cmd/link/internal/ld/outbuf_freebsd.go Normal file
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@ -0,0 +1,13 @@
// 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"
func (out *OutBuf) fallocate(size uint64) error {
return unix.PosixFallocate(int(out.f.Fd()), 0, int64(size))
}

2
src/cmd/link/internal/ld/outbuf_nofallocate.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build !darwin && !linux
//go:build !darwin && !(freebsd && go1.21) && !linux
package ld

1
src/cmd/link/internal/ld/outbuf_notdarwin.go
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@ -3,7 +3,6 @@
// license that can be found in the LICENSE file.
//go:build !darwin
// +build !darwin
package ld

18
src/internal/syscall/unix/fallocate_freebsd.go Normal file
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@ -0,0 +1,18 @@
// 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.
package unix
import "syscall"
// FreeBSD posix_fallocate system call number.
const posixFallocateTrap uintptr = 530
func PosixFallocate(fd int, off int64, size int64) error {
_, _, errno := syscall.Syscall(posixFallocateTrap, uintptr(fd), uintptr(off), uintptr(size))
if errno != 0 {
return errno
}
return nil
}