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restic/internal/fs/setflags_linux_test.go
Michael Eischer ff7ef5007e Replace most usages of ioutil with the underlying function
The ioutil functions are deprecated since Go 1.17 and only wrap another
library function. Thus directly call the underlying function.

This commit only mechanically replaces the function calls.
2022-12-02 19:36:43 +01:00

71 lines
1.5 KiB
Go

package fs
import (
"io"
"os"
"testing"
"time"
rtest "github.com/restic/restic/internal/test"
"golang.org/x/sys/unix"
)
func TestNoatime(t *testing.T) {
f, err := os.CreateTemp("", "restic-test-noatime")
if err != nil {
t.Fatal(err)
}
defer func() {
_ = f.Close()
err = Remove(f.Name())
if err != nil {
t.Fatal(err)
}
}()
// Only run this test on common filesystems that support O_NOATIME.
// On others, we may not get an error.
if !supportsNoatime(t, f) {
t.Skip("temp directory may not support O_NOATIME, skipping")
}
// From this point on, we own the file, so we should not get EPERM.
_, err = io.WriteString(f, "Hello!")
rtest.OK(t, err)
_, err = f.Seek(0, io.SeekStart)
rtest.OK(t, err)
getAtime := func() time.Time {
info, err := f.Stat()
rtest.OK(t, err)
return ExtendedStat(info).AccessTime
}
atime := getAtime()
err = setFlags(f)
rtest.OK(t, err)
_, err = f.Read(make([]byte, 1))
rtest.OK(t, err)
rtest.Equals(t, atime, getAtime())
}
func supportsNoatime(t *testing.T, f *os.File) bool {
var fsinfo unix.Statfs_t
err := unix.Fstatfs(int(f.Fd()), &fsinfo)
rtest.OK(t, err)
// The funky cast works around a compiler error on 32-bit archs:
// "unix.BTRFS_SUPER_MAGIC (untyped int constant 2435016766) overflows int32".
// https://github.com/golang/go/issues/52061
typ := int64(uint(fsinfo.Type))
return typ == unix.BTRFS_SUPER_MAGIC ||
typ == unix.EXT2_SUPER_MAGIC ||
typ == unix.EXT3_SUPER_MAGIC ||
typ == unix.EXT4_SUPER_MAGIC ||
typ == unix.TMPFS_MAGIC
}