diff options
Diffstat (limited to 'runsc/boot/user_test.go')
| -rw-r--r-- | runsc/boot/user_test.go | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/runsc/boot/user_test.go b/runsc/boot/user_test.go deleted file mode 100644 index 9aee2ad07..000000000 --- a/runsc/boot/user_test.go +++ /dev/null @@ -1,254 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package boot - -import ( - "io/ioutil" - "os" - "path/filepath" - "strings" - "syscall" - "testing" - - specs "github.com/opencontainers/runtime-spec/specs-go" - "gvisor.dev/gvisor/pkg/sentry/context/contexttest" - "gvisor.dev/gvisor/pkg/sentry/fs" - "gvisor.dev/gvisor/pkg/sentry/kernel/auth" -) - -func setupTempDir() (string, error) { - tmpDir, err := ioutil.TempDir(os.TempDir(), "exec-user-test") - if err != nil { - return "", err - } - return tmpDir, nil -} - -func setupPasswd(contents string, perms os.FileMode) func() (string, error) { - return func() (string, error) { - tmpDir, err := setupTempDir() - if err != nil { - return "", err - } - - if err := os.Mkdir(filepath.Join(tmpDir, "etc"), 0777); err != nil { - return "", err - } - - f, err := os.Create(filepath.Join(tmpDir, "etc", "passwd")) - if err != nil { - return "", err - } - defer f.Close() - - _, err = f.WriteString(contents) - if err != nil { - return "", err - } - - err = f.Chmod(perms) - if err != nil { - return "", err - } - return tmpDir, nil - } -} - -// TestGetExecUserHome tests the getExecUserHome function. -func TestGetExecUserHome(t *testing.T) { - tests := map[string]struct { - uid auth.KUID - createRoot func() (string, error) - expected string - }{ - "success": { - uid: 1000, - createRoot: setupPasswd("adin::1000:1111::/home/adin:/bin/sh", 0666), - expected: "/home/adin", - }, - "no_passwd": { - uid: 1000, - createRoot: setupTempDir, - expected: "/", - }, - "no_perms": { - uid: 1000, - createRoot: setupPasswd("adin::1000:1111::/home/adin:/bin/sh", 0000), - expected: "/", - }, - "directory": { - uid: 1000, - createRoot: func() (string, error) { - tmpDir, err := setupTempDir() - if err != nil { - return "", err - } - - if err := os.Mkdir(filepath.Join(tmpDir, "etc"), 0777); err != nil { - return "", err - } - - if err := syscall.Mkdir(filepath.Join(tmpDir, "etc", "passwd"), 0666); err != nil { - return "", err - } - - return tmpDir, nil - }, - expected: "/", - }, - // Currently we don't allow named pipes. - "named_pipe": { - uid: 1000, - createRoot: func() (string, error) { - tmpDir, err := setupTempDir() - if err != nil { - return "", err - } - - if err := os.Mkdir(filepath.Join(tmpDir, "etc"), 0777); err != nil { - return "", err - } - - if err := syscall.Mkfifo(filepath.Join(tmpDir, "etc", "passwd"), 0666); err != nil { - return "", err - } - - return tmpDir, nil - }, - expected: "/", - }, - } - - for name, tc := range tests { - t.Run(name, func(t *testing.T) { - tmpDir, err := tc.createRoot() - if err != nil { - t.Fatalf("failed to create root dir: %v", err) - } - - sandEnd, cleanup, err := startGofer(tmpDir) - if err != nil { - t.Fatalf("failed to create gofer: %v", err) - } - defer cleanup() - - ctx := contexttest.Context(t) - conf := &Config{ - RootDir: "unused_root_dir", - Network: NetworkNone, - DisableSeccomp: true, - } - - spec := &specs.Spec{ - Root: &specs.Root{ - Path: tmpDir, - Readonly: true, - }, - // Add /proc mount as tmpfs to avoid needing a kernel. - Mounts: []specs.Mount{ - { - Destination: "/proc", - Type: "tmpfs", - }, - }, - } - - mntr := newContainerMounter(spec, []int{sandEnd}, nil, &podMountHints{}) - mns, err := mntr.createMountNamespace(ctx, conf) - if err != nil { - t.Fatalf("failed to create mount namespace: %v", err) - } - ctx = fs.WithRoot(ctx, mns.Root()) - if err := mntr.mountSubmounts(ctx, conf, mns); err != nil { - t.Fatalf("failed to create mount namespace: %v", err) - } - - got, err := getExecUserHome(ctx, mns, tc.uid) - if err != nil { - t.Fatalf("failed to get user home: %v", err) - } - - if got != tc.expected { - t.Fatalf("expected %v, got: %v", tc.expected, got) - } - }) - } -} - -// TestFindHomeInPasswd tests the findHomeInPasswd function's passwd file parsing. -func TestFindHomeInPasswd(t *testing.T) { - tests := map[string]struct { - uid uint32 - passwd string - expected string - def string - }{ - "empty": { - uid: 1000, - passwd: "", - expected: "/", - def: "/", - }, - "whitespace": { - uid: 1000, - passwd: " ", - expected: "/", - def: "/", - }, - "full": { - uid: 1000, - passwd: "adin::1000:1111::/home/adin:/bin/sh", - expected: "/home/adin", - def: "/", - }, - // For better or worse, this is how runc works. - "partial": { - uid: 1000, - passwd: "adin::1000:1111:", - expected: "", - def: "/", - }, - "multiple": { - uid: 1001, - passwd: "adin::1000:1111::/home/adin:/bin/sh\nian::1001:1111::/home/ian:/bin/sh", - expected: "/home/ian", - def: "/", - }, - "duplicate": { - uid: 1000, - passwd: "adin::1000:1111::/home/adin:/bin/sh\nian::1000:1111::/home/ian:/bin/sh", - expected: "/home/adin", - def: "/", - }, - "empty_lines": { - uid: 1001, - passwd: "adin::1000:1111::/home/adin:/bin/sh\n\n\nian::1001:1111::/home/ian:/bin/sh", - expected: "/home/ian", - def: "/", - }, - } - - for name, tc := range tests { - t.Run(name, func(t *testing.T) { - got, err := findHomeInPasswd(tc.uid, strings.NewReader(tc.passwd), tc.def) - if err != nil { - t.Fatalf("error parsing passwd: %v", err) - } - if tc.expected != got { - t.Fatalf("expected %v, got: %v", tc.expected, got) - } - }) - } -} |