rclone/vfs/vfstest/read_unix.go

53 lines
1.1 KiB
Go

//go:build linux || darwin || freebsd
package vfstest
import (
"syscall"
"testing"
"github.com/stretchr/testify/assert"
)
// TestReadFileDoubleClose tests double close on read
func TestReadFileDoubleClose(t *testing.T) {
run.skipIfVFS(t)
run.skipIfNoFUSE(t)
run.createFile(t, "testdoubleclose", "hello")
in, err := run.os.Open(run.path("testdoubleclose"))
assert.NoError(t, err)
fd := in.Fd()
fd1, err := syscall.Dup(int(fd))
assert.NoError(t, err)
fd2, err := syscall.Dup(int(fd))
assert.NoError(t, err)
// close one of the dups - should produce no error
err = syscall.Close(fd1)
assert.NoError(t, err)
// read from the file
buf := make([]byte, 1)
_, err = in.Read(buf)
assert.NoError(t, err)
// close it
err = in.Close()
assert.NoError(t, err)
// read from the other dup - should produce no error as this
// file is now buffered
n, err := syscall.Read(fd2, buf)
assert.NoError(t, err)
assert.Equal(t, 1, n)
// close the dup - should not produce an error
err = syscall.Close(fd2)
assert.NoError(t, err, "input/output error")
run.rm(t, "testdoubleclose")
}