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authorJakob Unterwurzacher2021-02-07 20:01:16 +0100
committerJakob Unterwurzacher2021-02-07 20:01:16 +0100
commiteaca820e876bfcdc67323eac6dd43ecc420968f2 (patch)
tree7d5fe2fef822778d6a78010fa2fa6f5c021f54d5 /tests/defaults
parentbb2484f1520102f4ab6c84400f9eef53d4cdd2ad (diff)
fusefrontend: do not encrypt ACLs
Pass through system.posix_acl_access and system.posix_acl_default unencrypted to fix "cp -a" problems. "cp -a" uses "setxattr" even to set normal permissions, see https://www.spinics.net/lists/linux-nfs/msg63986.html . Fixes https://github.com/rfjakob/gocryptfs/issues/543
Diffstat (limited to 'tests/defaults')
-rw-r--r--tests/defaults/acl_test.go202
1 files changed, 202 insertions, 0 deletions
diff --git a/tests/defaults/acl_test.go b/tests/defaults/acl_test.go
new file mode 100644
index 0000000..b3826e8
--- /dev/null
+++ b/tests/defaults/acl_test.go
@@ -0,0 +1,202 @@
+package defaults
+
+import (
+ "io/ioutil"
+ "math/rand"
+ "os"
+ "os/exec"
+ "path/filepath"
+ "syscall"
+ "testing"
+ "time"
+
+ "golang.org/x/sys/unix"
+
+ "github.com/pkg/xattr"
+
+ "github.com/rfjakob/gocryptfs/tests/test_helpers"
+)
+
+// https://github.com/rfjakob/gocryptfs/issues/543
+func TestCpA(t *testing.T) {
+ fn1 := filepath.Join(test_helpers.TmpDir, t.Name())
+ fn2 := filepath.Join(test_helpers.DefaultPlainDir, t.Name())
+
+ rand.Seed(int64(time.Now().Nanosecond()))
+
+ {
+ // Need unrestricted umask
+ old := syscall.Umask(000)
+ defer syscall.Umask(old)
+ }
+
+ for i := 0; i < 10; i++ {
+ // Random permissions (except owner read, which cp needs)
+ var modeWant os.FileMode = os.FileMode(rand.Int31n(0777+1) | 0400)
+
+ // Create file outside mount
+ err := ioutil.WriteFile(fn1, nil, modeWant)
+ if err != nil {
+ t.Fatal(err)
+ }
+ // Verify perms (umask problems?)
+ fi, err := os.Stat(fn1)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if fi.Mode() != modeWant {
+ t.Errorf("ioutil.WriteFile created wrong permissions: want %o have %o", modeWant, fi.Mode())
+ }
+
+ // "cp -a" from outside to inside mount
+ c := exec.Command("cp", "-a", fn1, fn2)
+ c.Stderr = os.Stderr
+ c.Stdout = os.Stdout
+ err = c.Run()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // Check perms
+ fi, err = os.Stat(fn2)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if fi.Mode() != modeWant {
+ t.Errorf("cp -a did not preserve permissions: want %o have %o", modeWant, fi.Mode())
+ }
+
+ syscall.Unlink(fn1)
+ syscall.Unlink(fn2)
+ }
+}
+
+func getfacl(fn string) (string, error) {
+ c := exec.Command("getfacl", "-c", "--", fn)
+ out, err := c.Output()
+ return string(out), err
+}
+
+// https://github.com/rfjakob/gocryptfs/issues/543
+func TestAcl543(t *testing.T) {
+ fn1 := test_helpers.TmpDir + "/TestAcl543"
+ fn2 := test_helpers.DefaultPlainDir + "/TestAcl543"
+
+ var c *exec.Cmd
+
+ var modeWant os.FileMode = 0777
+
+ {
+ // Need unrestricted umask
+ old := syscall.Umask(000)
+ defer syscall.Umask(old)
+ }
+
+ // Set acl on file outside gocryptfs mount
+ err := ioutil.WriteFile(fn1, nil, modeWant)
+ if err != nil {
+ t.Fatal(err)
+ }
+ c = exec.Command("setfacl", "-m", "u:daemon:rwx", fn1)
+ c.Stderr = os.Stderr
+ c.Stdout = os.Stdout
+ err = c.Run()
+ if err != nil {
+ t.Skip(err)
+ }
+ aclWant, err := getfacl(fn1)
+ if err != nil {
+ t.Fatal(err)
+ }
+ fi, err := os.Stat(fn1)
+ if fi.Mode() != modeWant {
+ t.Fatalf("mode changed from %o to %o", modeWant, fi.Mode())
+ }
+
+ // Set acl on file inside gocryptfs mount
+ err = ioutil.WriteFile(fn2, nil, modeWant)
+ if err != nil {
+ t.Fatal(err)
+ }
+ c = exec.Command("setfacl", "-m", "u:daemon:rwx", fn2)
+ c.Stderr = os.Stderr
+ c.Stdout = os.Stdout
+ err = c.Run()
+ if err != nil {
+ t.Fatal(err)
+ }
+ aclHave1, err := getfacl(fn1)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if aclHave1 != aclWant {
+ t.Error(aclHave1)
+ }
+ os.Remove(fn2)
+
+ // "cp -a" from outside to inside mount
+ c = exec.Command("cp", "-a", fn1, fn2)
+ c.Stderr = os.Stderr
+ c.Stdout = os.Stdout
+ err = c.Run()
+ if err != nil {
+ t.Fatal(err)
+ }
+ fi, err = os.Stat(fn2)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if fi.Mode() != modeWant {
+ t.Errorf("cp -a did not preserve permissions: want %o have %o", modeWant, fi.Mode())
+ }
+ aclHave2, err := getfacl(fn2)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if aclHave2 != aclWant {
+ t.Errorf("cp -a did not preserve acl: %q", aclHave1)
+ }
+}
+
+// Check that we handle zero-sized and undersized buffers correctly
+func TestXattrOverflow(t *testing.T) {
+ fn := filepath.Join(test_helpers.DefaultPlainDir, t.Name())
+ ioutil.WriteFile(fn, nil, 0600)
+
+ attr := "user.foo123"
+ val := []byte("12341234")
+ err := xattr.LSet(fn, attr, val)
+ if err != nil {
+ t.Skip(err)
+ }
+
+ // Getxattr
+ sz, err := unix.Lgetxattr(fn, attr, nil)
+ if err != nil {
+ t.Error(err)
+ }
+ if sz != len(val) {
+ t.Errorf("wrong sz: want %d have %d", len(val), sz)
+ }
+ sz, err = unix.Lgetxattr(fn, attr, make([]byte, 1))
+ if err != syscall.ERANGE {
+ t.Error(err)
+ }
+
+ // Listxattr
+ szWant, err := unix.Llistxattr(fn, make([]byte, 64*1024))
+ if err != nil {
+ t.Fatal(err)
+ }
+ sz, err = unix.Llistxattr(fn, nil)
+ if err != nil {
+ t.Error(err)
+ }
+ if sz != szWant {
+ t.Errorf("wrong sz: want %d have %d", szWant, sz)
+ }
+ sz, err = unix.Llistxattr(fn, make([]byte, 1))
+ if err != syscall.ERANGE {
+ t.Error(err)
+ }
+}