1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 // +build darwin freebsd linux netbsd openbsd
16 func checkUidGid(t *testing.T, path string, uid, gid int) {
17 dir, err := Stat(path)
19 t.Fatalf("Stat %q (looking for uid/gid %d/%d): %s", path, uid, gid, err)
21 sys := dir.(*FileStat).Sys.(*syscall.Stat_t)
22 if int(sys.Uid) != uid {
23 t.Errorf("Stat %q: uid %d want %d", path, sys.Uid, uid)
25 if int(sys.Gid) != gid {
26 t.Errorf("Stat %q: gid %d want %d", path, sys.Gid, gid)
30 func TestChown(t *testing.T) {
31 // Chown is not supported under windows or Plan 9.
32 // Plan9 provides a native ChownPlan9 version instead.
33 if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
36 // Use TempDir() to make sure we're on a local file system,
37 // so that the group ids returned by Getgroups will be allowed
38 // on the file. On NFS, the Getgroups groups are
40 f := newFile("TestChown", t)
41 defer Remove(f.Name())
45 t.Fatalf("stat %s: %s", f.Name(), err)
48 // Can't change uid unless root, but can try
49 // changing the group id. First try our current group.
52 if err = Chown(f.Name(), -1, gid); err != nil {
53 t.Fatalf("chown %s -1 %d: %s", f.Name(), gid, err)
55 sys := dir.(*FileStat).Sys.(*syscall.Stat_t)
56 checkUidGid(t, f.Name(), int(sys.Uid), gid)
58 // Then try all the auxiliary groups.
59 groups, err := Getgroups()
61 t.Fatalf("getgroups: %s", err)
63 t.Log("groups: ", groups)
64 for _, g := range groups {
65 if err = Chown(f.Name(), -1, g); err != nil {
66 t.Fatalf("chown %s -1 %d: %s", f.Name(), g, err)
68 checkUidGid(t, f.Name(), int(sys.Uid), g)
70 // change back to gid to test fd.Chown
71 if err = f.Chown(-1, gid); err != nil {
72 t.Fatalf("fchown %s -1 %d: %s", f.Name(), gid, err)
74 checkUidGid(t, f.Name(), int(sys.Uid), gid)