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go-mtree/keywords_linux_test.go
Vincent Batts ed464af779
*: xattr can Update()
This is a gnarly patchset that has been mashed together.
It uncovered that some aspects of Check were never really working
correctly for `xattr` keywords, but also the `Update()` had been left
undone for a while.

This includes some API changes around the `Keyword` and `KeyVal` types.

Also I would like to update the signature for the `UpdateKeywordFunc` to
just accept a `KeyVal` as an argugment, rather than a keyword AND the
value. with this context there would be no need to guess on the value of
what's passed to the xattr update function of whether it needs or
already is base64 encoded.

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
2017-06-24 15:05:24 -04:00

84 lines
1.7 KiB
Go

// +build linux
package mtree
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"testing"
"github.com/vbatts/go-mtree/xattr"
)
func TestXattr(t *testing.T) {
testDir, present := os.LookupEnv("MTREE_TESTDIR")
if present == false {
// a bit dirty to create/destory a directory in cwd,
// but often /tmp is mounted tmpfs and doesn't support
// xattrs
testDir = "."
}
dir, err := ioutil.TempDir(testDir, "test.xattrs.")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
fh, err := os.Create(filepath.Join(dir, "file"))
if err != nil {
t.Fatal(err)
}
fh.WriteString("howdy")
fh.Sync()
if _, err := fh.Seek(0, 0); err != nil {
t.Fatal(err)
}
if err := os.Symlink("./no/such/path", filepath.Join(dir, "symlink")); err != nil {
t.Fatal(err)
}
if err := xattr.Set(dir, "user.test", []byte("directory")); err != nil {
t.Skip(fmt.Sprintf("skipping: %q does not support xattrs", dir))
}
if err := xattr.Set(filepath.Join(dir, "file"), "user.test", []byte("regular file")); err != nil {
t.Fatal(err)
}
dirstat, err := os.Lstat(dir)
if err != nil {
t.Fatal(err)
}
// Check the directory
kvs, err := xattrKeywordFunc(dir, dirstat, nil)
if err != nil {
t.Error(err)
}
if len(kvs) == 0 {
t.Errorf("expected a keyval; got none")
}
filestat, err := fh.Stat()
if err != nil {
t.Fatal(err)
}
// Check the regular file
kvs, err = xattrKeywordFunc(filepath.Join(dir, "file"), filestat, fh)
if err != nil {
t.Error(err)
}
if len(kvs) == 0 {
t.Errorf("expected a keyval; got none")
}
linkstat, err := os.Lstat(filepath.Join(dir, "symlink"))
if err != nil {
t.Fatal(err)
}
// Check a broken symlink
_, err = xattrKeywordFunc(filepath.Join(dir, "symlink"), linkstat, nil)
if err != nil {
t.Error(err)
}
}