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syscall: add fcntl test

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Also updates documentation.

LGTM=minux.ma
R=iant, bradfitz, nightlyone, minux.ma
CC=golang-codereviews
https://golang.org/cl/58660044
This commit is contained in:
Mikio Hara 2014-02-24 20:35:01 +09:00
parent fe330cf5bb
commit 699aa37d03
1 changed files with 37 additions and 14 deletions
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51
src/pkg/syscall/syscall_unix_test.go
View file

@ -4,9 +4,6 @@
// +build freebsd dragonfly darwin linux netbsd openbsd
// This file tests that some basic syscalls are consistent across
// all Unixes.
package syscall_test
import (
@ -16,14 +13,17 @@ import (
"net"
"os"
"os/exec"
"path/filepath"
"runtime"
"syscall"
"testing"
"time"
)
// {Set,Get}priority and needed constants for them
// Tests that below functions, structures and constants are consistent
// on all Unix-like systems.
func _() {
// program scheduling priority functions and constants
var (
_ func(int, int, int) error = syscall.Setpriority
_ func(int, int) (int, error) = syscall.Getpriority
@ -33,24 +33,47 @@ func _() {
_ int = syscall.PRIO_PROCESS
_ int = syscall.PRIO_PGRP
)
}
// termios functions and constants
func _() {
// termios constants
const (
_ int = syscall.TCIFLUSH
_ int = syscall.TCIOFLUSH
_ int = syscall.TCOFLUSH
)
// fcntl file locking structure and constants
var (
_ = syscall.Flock_t{
Type: int16(0),
Whence: int16(0),
Start: int64(0),
Len: int64(0),
Pid: int32(0),
}
)
const (
_ = syscall.F_GETLK
_ = syscall.F_SETLK
_ = syscall.F_SETLKW
)
}
func _() {
_ = syscall.Flock_t{
Type: int16(0),
Whence: int16(0),
Start: int64(0),
Len: int64(0),
Pid: int32(0),
// TestFcntlFlock tests whether the file locking structure matches
// the calling convention of each kernel.
func TestFcntlFlock(t *testing.T) {
name := filepath.Join(os.TempDir(), "TestFcntlFlock")
fd, err := syscall.Open(name, syscall.O_CREAT|syscall.O_RDWR|syscall.O_CLOEXEC, 0)
if err != nil {
t.Fatalf("Open failed: %v", err)
}
defer syscall.Unlink(name)
defer syscall.Close(fd)
flock := syscall.Flock_t{
Type: syscall.F_RDLCK,
Start: 0, Len: 0, Whence: 1,
}
if err := syscall.FcntlFlock(uintptr(fd), syscall.F_GETLK, &flock); err != nil {
t.Fatalf("FcntlFlock failed: %v", err)
}
}