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unix: add symlink-safe *xattr functions on darwin

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Updates golang/go#14456

Change-Id: I04632ef1d302e938a2cc373eb90f600f01404380
Reviewed-on: https://go-review.googlesource.com/114198
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Tobias Klauser
2018-05-23 21:11:48 +00:00
committed by Tobias Klauser
parent f3b0f5faf5
commit 77b0e43150
7 changed files with 78 additions and 16 deletions
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unix/xattr_test.go
+26
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@@ -7,6 +7,7 @@
package unix_test
import (
"os"
"runtime"
"strings"
"testing"
@@ -89,4 +90,29 @@ func TestXattr(t *testing.T) {
if err != nil {
t.Fatalf("Removexattr: %v", err)
}
n := "nonexistent"
err = unix.Lsetxattr(n, xattrName, []byte(xattrDataSet), 0)
if err != unix.ENOENT {
t.Errorf("Lsetxattr: expected %v on non-existent file, got %v", unix.ENOENT, err)
}
_, err = unix.Lgetxattr(n, xattrName, nil)
if err != unix.ENOENT {
t.Errorf("Lgetxattr: %v", err)
}
s := "symlink1"
err = os.Symlink(n, s)
if err != nil {
t.Fatal(err)
}
// Linux doesn't support xattrs on symlink according to xattr(7), so
// just test that we get the proper errors.
err = unix.Lsetxattr(s, xattrName, []byte(xattrDataSet), 0)
if err != nil && (runtime.GOOS != "linux" || err != unix.EPERM) {
t.Fatalf("Lsetxattr: %v", err)
}
}