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-rw-r--r--runsc/fsgofer/BUILD40
-rw-r--r--runsc/fsgofer/filter/BUILD26
-rw-r--r--runsc/fsgofer/filter/filter_amd64_state_autogen.go5
-rw-r--r--runsc/fsgofer/filter/filter_arm64_state_autogen.go5
-rw-r--r--runsc/fsgofer/filter/filter_race_state_autogen.go5
-rw-r--r--runsc/fsgofer/filter/filter_state_autogen.go6
-rw-r--r--runsc/fsgofer/fsgofer_amd64_unsafe_state_autogen.go5
-rw-r--r--runsc/fsgofer/fsgofer_arm64_unsafe_state_autogen.go5
-rw-r--r--runsc/fsgofer/fsgofer_state_autogen.go3
-rw-r--r--runsc/fsgofer/fsgofer_test.go1034
-rw-r--r--runsc/fsgofer/fsgofer_unsafe_state_autogen.go3
11 files changed, 37 insertions, 1100 deletions
diff --git a/runsc/fsgofer/BUILD b/runsc/fsgofer/BUILD
deleted file mode 100644
index c56e1d4d0..000000000
--- a/runsc/fsgofer/BUILD
+++ /dev/null
@@ -1,40 +0,0 @@
-load("//tools:defs.bzl", "go_library", "go_test")
-
-package(licenses = ["notice"])
-
-go_library(
- name = "fsgofer",
- srcs = [
- "fsgofer.go",
- "fsgofer_amd64_unsafe.go",
- "fsgofer_arm64_unsafe.go",
- "fsgofer_unsafe.go",
- ],
- visibility = ["//runsc:__subpackages__"],
- deps = [
- "//pkg/abi/linux",
- "//pkg/cleanup",
- "//pkg/fd",
- "//pkg/log",
- "//pkg/p9",
- "//pkg/sync",
- "//pkg/syserr",
- "@org_golang_x_sys//unix:go_default_library",
- ],
-)
-
-go_test(
- name = "fsgofer_test",
- size = "small",
- srcs = ["fsgofer_test.go"],
- library = ":fsgofer",
- deps = [
- "//pkg/fd",
- "//pkg/log",
- "//pkg/p9",
- "//pkg/test/testutil",
- "//runsc/specutils",
- "@com_github_syndtr_gocapability//capability:go_default_library",
- "@org_golang_x_sys//unix:go_default_library",
- ],
-)
diff --git a/runsc/fsgofer/filter/BUILD b/runsc/fsgofer/filter/BUILD
deleted file mode 100644
index 82b48ef32..000000000
--- a/runsc/fsgofer/filter/BUILD
+++ /dev/null
@@ -1,26 +0,0 @@
-load("//tools:defs.bzl", "go_library")
-
-package(licenses = ["notice"])
-
-go_library(
- name = "filter",
- srcs = [
- "config.go",
- "config_amd64.go",
- "config_arm64.go",
- "extra_filters.go",
- "extra_filters_msan.go",
- "extra_filters_race.go",
- "filter.go",
- ],
- visibility = [
- "//runsc:__subpackages__",
- ],
- deps = [
- "//pkg/abi/linux",
- "//pkg/flipcall",
- "//pkg/log",
- "//pkg/seccomp",
- "@org_golang_x_sys//unix:go_default_library",
- ],
-)
diff --git a/runsc/fsgofer/filter/filter_amd64_state_autogen.go b/runsc/fsgofer/filter/filter_amd64_state_autogen.go
new file mode 100644
index 000000000..0f27e5568
--- /dev/null
+++ b/runsc/fsgofer/filter/filter_amd64_state_autogen.go
@@ -0,0 +1,5 @@
+// automatically generated by stateify.
+
+// +build amd64
+
+package filter
diff --git a/runsc/fsgofer/filter/filter_arm64_state_autogen.go b/runsc/fsgofer/filter/filter_arm64_state_autogen.go
new file mode 100644
index 000000000..e87cf5af7
--- /dev/null
+++ b/runsc/fsgofer/filter/filter_arm64_state_autogen.go
@@ -0,0 +1,5 @@
+// automatically generated by stateify.
+
+// +build arm64
+
+package filter
diff --git a/runsc/fsgofer/filter/filter_race_state_autogen.go b/runsc/fsgofer/filter/filter_race_state_autogen.go
new file mode 100644
index 000000000..c4a858e80
--- /dev/null
+++ b/runsc/fsgofer/filter/filter_race_state_autogen.go
@@ -0,0 +1,5 @@
+// automatically generated by stateify.
+
+// +build race
+
+package filter
diff --git a/runsc/fsgofer/filter/filter_state_autogen.go b/runsc/fsgofer/filter/filter_state_autogen.go
new file mode 100644
index 000000000..41ff99424
--- /dev/null
+++ b/runsc/fsgofer/filter/filter_state_autogen.go
@@ -0,0 +1,6 @@
+// automatically generated by stateify.
+
+// +build !msan,!race
+// +build msan
+
+package filter
diff --git a/runsc/fsgofer/fsgofer_amd64_unsafe_state_autogen.go b/runsc/fsgofer/fsgofer_amd64_unsafe_state_autogen.go
new file mode 100644
index 000000000..df6721aaa
--- /dev/null
+++ b/runsc/fsgofer/fsgofer_amd64_unsafe_state_autogen.go
@@ -0,0 +1,5 @@
+// automatically generated by stateify.
+
+// +build amd64
+
+package fsgofer
diff --git a/runsc/fsgofer/fsgofer_arm64_unsafe_state_autogen.go b/runsc/fsgofer/fsgofer_arm64_unsafe_state_autogen.go
new file mode 100644
index 000000000..d2a18c61c
--- /dev/null
+++ b/runsc/fsgofer/fsgofer_arm64_unsafe_state_autogen.go
@@ -0,0 +1,5 @@
+// automatically generated by stateify.
+
+// +build arm64
+
+package fsgofer
diff --git a/runsc/fsgofer/fsgofer_state_autogen.go b/runsc/fsgofer/fsgofer_state_autogen.go
new file mode 100644
index 000000000..d2f978fb9
--- /dev/null
+++ b/runsc/fsgofer/fsgofer_state_autogen.go
@@ -0,0 +1,3 @@
+// automatically generated by stateify.
+
+package fsgofer
diff --git a/runsc/fsgofer/fsgofer_test.go b/runsc/fsgofer/fsgofer_test.go
deleted file mode 100644
index c5daebe5e..000000000
--- a/runsc/fsgofer/fsgofer_test.go
+++ /dev/null
@@ -1,1034 +0,0 @@
-// Copyright 2018 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 fsgofer
-
-import (
- "fmt"
- "io/ioutil"
- "net"
- "os"
- "path"
- "path/filepath"
- "testing"
-
- "github.com/syndtr/gocapability/capability"
- "golang.org/x/sys/unix"
- "gvisor.dev/gvisor/pkg/fd"
- "gvisor.dev/gvisor/pkg/log"
- "gvisor.dev/gvisor/pkg/p9"
- "gvisor.dev/gvisor/pkg/test/testutil"
- "gvisor.dev/gvisor/runsc/specutils"
-)
-
-var allOpenFlags = []p9.OpenFlags{p9.ReadOnly, p9.WriteOnly, p9.ReadWrite}
-
-var (
- allTypes = []uint32{unix.S_IFREG, unix.S_IFDIR, unix.S_IFLNK}
-
- // allConfs is set in init().
- allConfs []Config
-
- rwConfs = []Config{{ROMount: false}}
- roConfs = []Config{{ROMount: true}}
-)
-
-func init() {
- log.SetLevel(log.Debug)
-
- allConfs = append(allConfs, rwConfs...)
- allConfs = append(allConfs, roConfs...)
-
- if err := OpenProcSelfFD(); err != nil {
- panic(err)
- }
-}
-
-func configTestName(conf *Config) string {
- if conf.ROMount {
- return "ROMount"
- }
- return "RWMount"
-}
-
-func assertPanic(t *testing.T, f func()) {
- defer func() {
- if r := recover(); r == nil {
- t.Errorf("function did not panic")
- }
- }()
- f()
-}
-
-func testReadWrite(f p9.File, flags p9.OpenFlags, content []byte) error {
- want := make([]byte, len(content))
- copy(want, content)
-
- b := []byte("test-1-2-3")
- w, err := f.WriteAt(b, uint64(len(content)))
- if flags == p9.WriteOnly || flags == p9.ReadWrite {
- if err != nil {
- return fmt.Errorf("WriteAt(): %v", err)
- }
- if w != len(b) {
- return fmt.Errorf("WriteAt() was partial, got: %d, want: %d", w, len(b))
- }
- want = append(want, b...)
- } else {
- if e, ok := err.(unix.Errno); !ok || e != unix.EBADF {
- return fmt.Errorf("WriteAt() should have failed, got: %d, want: EBADFD", err)
- }
- }
-
- rBuf := make([]byte, len(want))
- r, err := f.ReadAt(rBuf, 0)
- if flags == p9.ReadOnly || flags == p9.ReadWrite {
- if err != nil {
- return fmt.Errorf("ReadAt(): %v", err)
- }
- if r != len(rBuf) {
- return fmt.Errorf("ReadAt() was partial, got: %d, want: %d", r, len(rBuf))
- }
- if string(rBuf) != string(want) {
- return fmt.Errorf("ReadAt() wrong data, got: %s, want: %s", string(rBuf), want)
- }
- } else {
- if e, ok := err.(unix.Errno); !ok || e != unix.EBADF {
- return fmt.Errorf("ReadAt() should have failed, got: %d, want: EBADFD", err)
- }
- }
- return nil
-}
-
-type state struct {
- root *localFile
- file *localFile
- conf Config
- fileType uint32
-}
-
-func (s state) String() string {
- return fmt.Sprintf("type(%v)", s.fileType)
-}
-
-func typeName(fileType uint32) string {
- switch fileType {
- case unix.S_IFREG:
- return "file"
- case unix.S_IFDIR:
- return "directory"
- case unix.S_IFLNK:
- return "symlink"
- default:
- panic(fmt.Sprintf("invalid file type for test: %d", fileType))
- }
-}
-
-func runAll(t *testing.T, test func(*testing.T, state)) {
- runCustom(t, allTypes, allConfs, test)
-}
-
-func runCustom(t *testing.T, types []uint32, confs []Config, test func(*testing.T, state)) {
- for _, c := range confs {
- for _, ft := range types {
- name := fmt.Sprintf("%s/%s", configTestName(&c), typeName(ft))
- t.Run(name, func(t *testing.T) {
- path, name, err := setup(ft)
- if err != nil {
- t.Fatalf("%v", err)
- }
- defer os.RemoveAll(path)
-
- a, err := NewAttachPoint(path, c)
- if err != nil {
- t.Fatalf("NewAttachPoint failed: %v", err)
- }
- root, err := a.Attach()
- if err != nil {
- t.Fatalf("Attach failed, err: %v", err)
- }
-
- _, file, err := root.Walk([]string{name})
- if err != nil {
- root.Close()
- t.Fatalf("root.Walk({%q}) failed, err: %v", "symlink", err)
- }
-
- st := state{
- root: root.(*localFile),
- file: file.(*localFile),
- conf: c,
- fileType: ft,
- }
- test(t, st)
- file.Close()
- root.Close()
- })
- }
- }
-}
-
-func setup(fileType uint32) (string, string, error) {
- path, err := ioutil.TempDir(testutil.TmpDir(), "root-")
- if err != nil {
- return "", "", fmt.Errorf("ioutil.TempDir() failed, err: %v", err)
- }
-
- // First attach with writable configuration to setup tree.
- a, err := NewAttachPoint(path, Config{})
- if err != nil {
- return "", "", err
- }
- root, err := a.Attach()
- if err != nil {
- return "", "", fmt.Errorf("Attach failed, err: %v", err)
- }
- defer root.Close()
-
- var name string
- switch fileType {
- case unix.S_IFREG:
- name = "file"
- fd, f, _, _, err := root.Create(name, p9.ReadWrite, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
- if err != nil {
- return "", "", fmt.Errorf("createFile(root, %q) failed, err: %v", "test", err)
- }
- if fd != nil {
- fd.Close()
- }
- defer f.Close()
- case unix.S_IFDIR:
- name = "dir"
- if _, err := root.Mkdir(name, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
- return "", "", fmt.Errorf("root.MkDir(%q) failed, err: %v", name, err)
- }
- case unix.S_IFLNK:
- name = "symlink"
- if _, err := root.Symlink("/some/target", name, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
- return "", "", fmt.Errorf("root.Symlink(%q) failed, err: %v", name, err)
- }
- default:
- panic(fmt.Sprintf("unknown file type %v", fileType))
- }
- return path, name, nil
-}
-
-func createFile(dir *localFile, name string) (*localFile, error) {
- _, f, _, _, err := dir.Create(name, p9.ReadWrite, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
- if err != nil {
- return nil, err
- }
- return f.(*localFile), nil
-}
-
-func TestReadWrite(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
- child, err := createFile(s.file, "test")
- if err != nil {
- t.Fatalf("%v: createFile() failed, err: %v", s, err)
- }
- defer child.Close()
- want := []byte("foobar")
- w, err := child.WriteAt(want, 0)
- if err != nil {
- t.Fatalf("%v: Write() failed, err: %v", s, err)
- }
- if w != len(want) {
- t.Fatalf("%v: Write() was partial, got: %d, expected: %d", s, w, len(want))
- }
- for _, flags := range allOpenFlags {
- _, l, err := s.file.Walk([]string{"test"})
- if err != nil {
- t.Fatalf("%v: Walk(%s) failed, err: %v", s, "test", err)
- }
- fd, _, _, err := l.Open(flags)
- if err != nil {
- t.Fatalf("%v: Open(%v) failed, err: %v", s, flags, err)
- }
- if fd != nil {
- defer fd.Close()
- }
- if err := testReadWrite(l, flags, want); err != nil {
- t.Fatalf("%v: testReadWrite(%v) failed: %v", s, flags, err)
- }
- }
- })
-}
-
-func TestCreate(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
- for i, flags := range allOpenFlags {
- _, l, _, _, err := s.file.Create(fmt.Sprintf("test-%d", i), flags, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
- if err != nil {
- t.Fatalf("%v, %v: WriteAt() failed, err: %v", s, flags, err)
- }
-
- if err := testReadWrite(l, flags, nil); err != nil {
- t.Fatalf("%v: testReadWrite(%v) failed: %v", s, flags, err)
- }
- }
- })
-}
-
-// TestReadWriteDup tests that a file opened in any mode can be dup'ed and
-// reopened in any other mode.
-func TestReadWriteDup(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
- child, err := createFile(s.file, "test")
- if err != nil {
- t.Fatalf("%v: createFile() failed, err: %v", s, err)
- }
- defer child.Close()
- want := []byte("foobar")
- w, err := child.WriteAt(want, 0)
- if err != nil {
- t.Fatalf("%v: Write() failed, err: %v", s, err)
- }
- if w != len(want) {
- t.Fatalf("%v: Write() was partial, got: %d, expected: %d", s, w, len(want))
- }
- for _, flags := range allOpenFlags {
- _, l, err := s.file.Walk([]string{"test"})
- if err != nil {
- t.Fatalf("%v: Walk(%s) failed, err: %v", s, "test", err)
- }
- defer l.Close()
- if _, _, _, err := l.Open(flags); err != nil {
- t.Fatalf("%v: Open(%v) failed, err: %v", s, flags, err)
- }
- for _, dupFlags := range allOpenFlags {
- t.Logf("Original flags: %v, dup flags: %v", flags, dupFlags)
- _, dup, err := l.Walk([]string{})
- if err != nil {
- t.Fatalf("%v: Walk(<empty>) failed: %v", s, err)
- }
- defer dup.Close()
- fd, _, _, err := dup.Open(dupFlags)
- if err != nil {
- t.Fatalf("%v: Open(%v) failed: %v", s, flags, err)
- }
- if fd != nil {
- defer fd.Close()
- }
- if err := testReadWrite(dup, dupFlags, want); err != nil {
- t.Fatalf("%v: testReadWrite(%v) failed: %v", s, dupFlags, err)
- }
- }
- }
- })
-}
-
-func TestUnopened(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFREG}, allConfs, func(t *testing.T, s state) {
- b := []byte("foobar")
- if _, err := s.file.WriteAt(b, 0); err != unix.EBADF {
- t.Errorf("%v: WriteAt() should have failed, got: %v, expected: unix.EBADF", s, err)
- }
- if _, err := s.file.ReadAt(b, 0); err != unix.EBADF {
- t.Errorf("%v: ReadAt() should have failed, got: %v, expected: unix.EBADF", s, err)
- }
- if _, err := s.file.Readdir(0, 100); err != unix.EBADF {
- t.Errorf("%v: Readdir() should have failed, got: %v, expected: unix.EBADF", s, err)
- }
- if err := s.file.FSync(); err != unix.EBADF {
- t.Errorf("%v: FSync() should have failed, got: %v, expected: unix.EBADF", s, err)
- }
- })
-}
-
-// TestOpenOPath is a regression test to ensure that a file that cannot be open
-// for read is allowed to be open. This was happening because the control file
-// was open with O_PATH, but Open() was not checking for it and allowing the
-// control file to be reused.
-func TestOpenOPath(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFREG}, rwConfs, func(t *testing.T, s state) {
- // Fist remove all permissions on the file.
- if err := s.file.SetAttr(p9.SetAttrMask{Permissions: true}, p9.SetAttr{Permissions: p9.FileMode(0)}); err != nil {
- t.Fatalf("SetAttr(): %v", err)
- }
- // Then walk to the file again to open a new control file.
- filename := filepath.Base(s.file.hostPath)
- _, newFile, err := s.root.Walk([]string{filename})
- if err != nil {
- t.Fatalf("root.Walk(%q): %v", filename, err)
- }
-
- if newFile.(*localFile).controlReadable {
- t.Fatalf("control file didn't open with O_PATH: %+v", newFile)
- }
- if _, _, _, err := newFile.Open(p9.ReadOnly); err != unix.EACCES {
- t.Fatalf("Open() should have failed, got: %v, wanted: EACCES", err)
- }
- })
-}
-
-func SetGetAttr(l *localFile, valid p9.SetAttrMask, attr p9.SetAttr) (p9.Attr, error) {
- if err := l.SetAttr(valid, attr); err != nil {
- return p9.Attr{}, err
- }
- _, _, a, err := l.GetAttr(p9.AttrMask{})
- if err != nil {
- return p9.Attr{}, err
- }
- return a, nil
-}
-
-func TestSetAttrPerm(t *testing.T) {
- runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
- valid := p9.SetAttrMask{Permissions: true}
- attr := p9.SetAttr{Permissions: 0777}
- got, err := SetGetAttr(s.file, valid, attr)
- if s.fileType == unix.S_IFLNK {
- if err == nil {
- t.Fatalf("%v: SetGetAttr(valid, %v) should have failed", s, attr.Permissions)
- }
- } else {
- if err != nil {
- t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.Permissions, err)
- }
- if got.Mode.Permissions() != attr.Permissions {
- t.Errorf("%v: wrong permission, got: %v, expected: %v", s, got.Mode.Permissions(), attr.Permissions)
- }
- }
- })
-}
-
-func TestSetAttrSize(t *testing.T) {
- runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
- for _, size := range []uint64{1024, 0, 1024 * 1024} {
- valid := p9.SetAttrMask{Size: true}
- attr := p9.SetAttr{Size: size}
- got, err := SetGetAttr(s.file, valid, attr)
- if s.fileType == unix.S_IFLNK || s.fileType == unix.S_IFDIR {
- if err == nil {
- t.Fatalf("%v: SetGetAttr(valid, %v) should have failed", s, attr.Permissions)
- }
- // Run for one size only, they will all fail the same way.
- return
- }
- if err != nil {
- t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.Size, err)
- }
- if got.Size != size {
- t.Errorf("%v: wrong size, got: %v, expected: %v", s, got.Size, size)
- }
- }
- })
-}
-
-func TestSetAttrTime(t *testing.T) {
- runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
- valid := p9.SetAttrMask{ATime: true, ATimeNotSystemTime: true}
- attr := p9.SetAttr{ATimeSeconds: 123, ATimeNanoSeconds: 456}
- got, err := SetGetAttr(s.file, valid, attr)
- if err != nil {
- t.Fatalf("%v: SetGetAttr(valid, %v:%v) failed, err: %v", s, attr.ATimeSeconds, attr.ATimeNanoSeconds, err)
- }
- if got.ATimeSeconds != 123 {
- t.Errorf("%v: wrong ATimeSeconds, got: %v, expected: %v", s, got.ATimeSeconds, 123)
- }
- if got.ATimeNanoSeconds != 456 {
- t.Errorf("%v: wrong ATimeNanoSeconds, got: %v, expected: %v", s, got.ATimeNanoSeconds, 456)
- }
-
- valid = p9.SetAttrMask{MTime: true, MTimeNotSystemTime: true}
- attr = p9.SetAttr{MTimeSeconds: 789, MTimeNanoSeconds: 012}
- got, err = SetGetAttr(s.file, valid, attr)
- if err != nil {
- t.Fatalf("%v: SetGetAttr(valid, %v:%v) failed, err: %v", s, attr.MTimeSeconds, attr.MTimeNanoSeconds, err)
- }
- if got.MTimeSeconds != 789 {
- t.Errorf("%v: wrong MTimeSeconds, got: %v, expected: %v", s, got.MTimeSeconds, 789)
- }
- if got.MTimeNanoSeconds != 012 {
- t.Errorf("%v: wrong MTimeNanoSeconds, got: %v, expected: %v", s, got.MTimeNanoSeconds, 012)
- }
- })
-}
-
-func TestSetAttrOwner(t *testing.T) {
- if os.Getuid() != 0 {
- t.Skipf("SetAttr(owner) test requires CAP_CHOWN, running as %d", os.Getuid())
- }
-
- runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
- newUID := os.Getuid() + 1
- valid := p9.SetAttrMask{UID: true}
- attr := p9.SetAttr{UID: p9.UID(newUID)}
- got, err := SetGetAttr(s.file, valid, attr)
- if err != nil {
- t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.UID, err)
- }
- if got.UID != p9.UID(newUID) {
- t.Errorf("%v: wrong uid, got: %v, expected: %v", s, got.UID, newUID)
- }
- })
-}
-
-func TestLink(t *testing.T) {
- if os.Getuid() != 0 {
- t.Skipf("Link test requires CAP_DAC_READ_SEARCH, running as %d", os.Getuid())
- }
- runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
- const dirName = "linkdir"
- const linkFile = "link"
- if _, err := s.root.Mkdir(dirName, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
- t.Fatalf("%v: MkDir(%s) failed, err: %v", s, dirName, err)
- }
- _, dir, err := s.root.Walk([]string{dirName})
- if err != nil {
- t.Fatalf("%v: Walk({%s}) failed, err: %v", s, dirName, err)
- }
-
- err = dir.Link(s.file, linkFile)
- if s.fileType == unix.S_IFDIR {
- if err != unix.EPERM {
- t.Errorf("%v: Link(target, %s) should have failed, got: %v, expected: unix.EPERM", s, linkFile, err)
- }
- return
- }
- if err != nil {
- t.Errorf("%v: Link(target, %s) failed, err: %v", s, linkFile, err)
- }
- })
-}
-
-func TestROMountChecks(t *testing.T) {
- const want = unix.EROFS
- uid := p9.UID(os.Getuid())
- gid := p9.GID(os.Getgid())
-
- runCustom(t, allTypes, roConfs, func(t *testing.T, s state) {
- if s.fileType != unix.S_IFLNK {
- if _, _, _, err := s.file.Open(p9.WriteOnly); err != want {
- t.Errorf("Open() should have failed, got: %v, expected: %v", err, want)
- }
- if _, _, _, err := s.file.Open(p9.ReadWrite); err != want {
- t.Errorf("Open() should have failed, got: %v, expected: %v", err, want)
- }
- if _, _, _, err := s.file.Open(p9.ReadOnly | p9.OpenTruncate); err != want {
- t.Errorf("Open() should have failed, got: %v, expected: %v", err, want)
- }
- f, _, _, err := s.file.Open(p9.ReadOnly)
- if err != nil {
- t.Errorf("Open() failed: %v", err)
- }
- if f != nil {
- _ = f.Close()
- }
- }
-
- if _, _, _, _, err := s.file.Create("some_file", p9.ReadWrite, 0777, uid, gid); err != want {
- t.Errorf("Create() should have failed, got: %v, expected: %v", err, want)
- }
- if _, err := s.file.Mkdir("some_dir", 0777, uid, gid); err != want {
- t.Errorf("MkDir() should have failed, got: %v, expected: %v", err, want)
- }
- if err := s.file.RenameAt("some_file", s.file, "other_file"); err != want {
- t.Errorf("Rename() should have failed, got: %v, expected: %v", err, want)
- }
- if _, err := s.file.Symlink("some_place", "some_symlink", uid, gid); err != want {
- t.Errorf("Symlink() should have failed, got: %v, expected: %v", err, want)
- }
- if err := s.file.UnlinkAt("some_file", 0); err != want {
- t.Errorf("UnlinkAt() should have failed, got: %v, expected: %v", err, want)
- }
- if err := s.file.Link(s.file, "some_link"); err != want {
- t.Errorf("Link() should have failed, got: %v, expected: %v", err, want)
- }
- if _, err := s.file.Mknod("some-nod", 0777, 1, 2, uid, gid); err != want {
- t.Errorf("Mknod() should have failed, got: %v, expected: %v", err, want)
- }
-
- valid := p9.SetAttrMask{Size: true}
- attr := p9.SetAttr{Size: 0}
- if err := s.file.SetAttr(valid, attr); err != want {
- t.Errorf("SetAttr() should have failed, got: %v, expected: %v", err, want)
- }
- })
-}
-
-func TestWalkNotFound(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, allConfs, func(t *testing.T, s state) {
- if _, _, err := s.file.Walk([]string{"nobody-here"}); err != unix.ENOENT {
- t.Errorf("Walk(%q) should have failed, got: %v, expected: unix.ENOENT", "nobody-here", err)
- }
- if _, _, err := s.file.Walk([]string{"nobody", "here"}); err != unix.ENOENT {
- t.Errorf("Walk(%q) should have failed, got: %v, expected: unix.ENOENT", "nobody/here", err)
- }
- if !s.conf.ROMount {
- if _, err := s.file.Mkdir("dir", 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
- t.Fatalf("MkDir(dir) failed, err: %v", err)
- }
- if _, _, err := s.file.Walk([]string{"dir", "nobody-here"}); err != unix.ENOENT {
- t.Errorf("Walk(%q) should have failed, got: %v, expected: unix.ENOENT", "dir/nobody-here", err)
- }
- }
- })
-}
-
-func TestWalkPanic(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, allConfs, func(t *testing.T, s state) {
- for _, name := range []string{".", ".."} {
- assertPanic(t, func() {
- s.file.Walk([]string{name})
- })
- }
- })
-}
-
-func TestWalkDup(t *testing.T) {
- runAll(t, func(t *testing.T, s state) {
- _, dup, err := s.file.Walk([]string{})
- if err != nil {
- t.Fatalf("%v: Walk(nil) failed, err: %v", s, err)
- }
- // Check that 'dup' is usable.
- if _, _, _, err := dup.GetAttr(p9.AttrMask{}); err != nil {
- t.Errorf("%v: GetAttr() failed, err: %v", s, err)
- }
- })
-}
-
-func TestWalkMultiple(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
- var names []string
- var parent p9.File = s.file
- for i := 0; i < 5; i++ {
- name := fmt.Sprintf("dir%d", i)
- names = append(names, name)
-
- if _, err := parent.Mkdir(name, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
- t.Fatalf("MkDir(%q) failed, err: %v", name, err)
- }
-
- var err error
- _, parent, err = s.file.Walk(names)
- if err != nil {
- t.Errorf("Walk(%q): %v", name, err)
- }
- }
- })
-}
-
-func TestReaddir(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
- name := "dir"
- if _, err := s.file.Mkdir(name, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
- t.Fatalf("%v: MkDir(%s) failed, err: %v", s, name, err)
- }
- name = "symlink"
- if _, err := s.file.Symlink("/some/target", name, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
- t.Fatalf("%v: Symlink(%q) failed, err: %v", s, name, err)
- }
- name = "file"
- _, f, _, _, err := s.file.Create(name, p9.ReadWrite, 0555, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
- if err != nil {
- t.Fatalf("%v: createFile(root, %q) failed, err: %v", s, name, err)
- }
- f.Close()
-
- if _, _, _, err := s.file.Open(p9.ReadOnly); err != nil {
- t.Fatalf("%v: Open(ReadOnly) failed, err: %v", s, err)
- }
-
- dirents, err := s.file.Readdir(0, 10)
- if err != nil {
- t.Fatalf("%v: Readdir(0, 10) failed, err: %v", s, err)
- }
- if len(dirents) != 3 {
- t.Fatalf("%v: Readdir(0, 10) wrong number of items, got: %v, expected: 3", s, len(dirents))
- }
- var dir, symlink, file bool
- for _, d := range dirents {
- switch d.Name {
- case "dir":
- if d.Type != p9.TypeDir {
- t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeDir)
- }
- dir = true
- case "symlink":
- if d.Type != p9.TypeSymlink {
- t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeSymlink)
- }
- symlink = true
- case "file":
- if d.Type != p9.TypeRegular {
- t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeRegular)
- }
- file = true
- default:
- t.Errorf("%v: dirent.Name got: %v", s, d.Name)
- }
-
- _, f, err := s.file.Walk([]string{d.Name})
- if err != nil {
- t.Fatalf("%v: Walk({%s}) failed, err: %v", s, d.Name, err)
- }
- _, _, a, err := f.GetAttr(p9.AttrMask{})
- if err != nil {
- t.Fatalf("%v: GetAttr() failed, err: %v", s, err)
- }
- if d.Type != a.Mode.QIDType() {
- t.Errorf("%v: dirent.Type different than GetAttr().Mode.QIDType(), got: %v, expected: %v", s, d.Type, a.Mode.QIDType())
- }
- }
- if !dir || !symlink || !file {
- t.Errorf("%v: Readdir(0, 10) wrong files returned, dir: %v, symlink: %v, file: %v", s, dir, symlink, file)
- }
- })
-}
-
-// Test that attach point can be written to when it points to a file, e.g.
-// /etc/hosts.
-func TestAttachFile(t *testing.T) {
- conf := Config{ROMount: false}
- dir, err := ioutil.TempDir("", "root-")
- if err != nil {
- t.Fatalf("ioutil.TempDir() failed, err: %v", err)
- }
- defer os.RemoveAll(dir)
-
- path := path.Join(dir, "test")
- if _, err := os.Create(path); err != nil {
- t.Fatalf("os.Create(%q) failed, err: %v", path, err)
- }
-
- a, err := NewAttachPoint(path, conf)
- if err != nil {
- t.Fatalf("NewAttachPoint failed: %v", err)
- }
- root, err := a.Attach()
- if err != nil {
- t.Fatalf("Attach failed, err: %v", err)
- }
-
- if _, _, _, err := root.Open(p9.ReadWrite); err != nil {
- t.Fatalf("Open(ReadWrite) failed, err: %v", err)
- }
- defer root.Close()
-
- b := []byte("foobar")
- w, err := root.WriteAt(b, 0)
- if err != nil {
- t.Fatalf("Write() failed, err: %v", err)
- }
- if w != len(b) {
- t.Fatalf("Write() was partial, got: %d, expected: %d", w, len(b))
- }
- rBuf := make([]byte, len(b))
- r, err := root.ReadAt(rBuf, 0)
- if err != nil {
- t.Fatalf("ReadAt() failed, err: %v", err)
- }
- if r != len(rBuf) {
- t.Fatalf("ReadAt() was partial, got: %d, expected: %d", r, len(rBuf))
- }
- if string(rBuf) != "foobar" {
- t.Fatalf("ReadAt() wrong data, got: %s, expected: %s", string(rBuf), "foobar")
- }
-}
-
-func TestAttachInvalidType(t *testing.T) {
- dir, err := ioutil.TempDir("", "attach-")
- if err != nil {
- t.Fatalf("ioutil.TempDir() failed, err: %v", err)
- }
- defer os.RemoveAll(dir)
-
- fifo := filepath.Join(dir, "fifo")
- if err := unix.Mkfifo(fifo, 0755); err != nil {
- t.Fatalf("Mkfifo(%q): %v", fifo, err)
- }
-
- dirFile, err := os.Open(dir)
- if err != nil {
- t.Fatalf("Open(%s): %v", dir, err)
- }
- defer dirFile.Close()
-
- // Bind a socket via /proc to be sure that a length of a socket path
- // is less than UNIX_PATH_MAX.
- socket := filepath.Join(fmt.Sprintf("/proc/self/fd/%d", dirFile.Fd()), "socket")
- l, err := net.Listen("unix", socket)
- if err != nil {
- t.Fatalf("net.Listen(unix, %q): %v", socket, err)
- }
- defer l.Close()
-
- for _, tc := range []struct {
- name string
- path string
- }{
- {name: "fifo", path: fifo},
- {name: "socket", path: socket},
- } {
- t.Run(tc.name, func(t *testing.T) {
- conf := Config{ROMount: false}
- a, err := NewAttachPoint(tc.path, conf)
- if err != nil {
- t.Fatalf("NewAttachPoint failed: %v", err)
- }
- f, err := a.Attach()
- if f != nil || err == nil {
- t.Fatalf("Attach should have failed, got (%v, %v)", f, err)
- }
- })
- }
-}
-
-func TestDoubleAttachError(t *testing.T) {
- conf := Config{ROMount: false}
- root, err := ioutil.TempDir("", "root-")
- if err != nil {
- t.Fatalf("ioutil.TempDir() failed, err: %v", err)
- }
- defer os.RemoveAll(root)
- a, err := NewAttachPoint(root, conf)
- if err != nil {
- t.Fatalf("NewAttachPoint failed: %v", err)
- }
-
- if _, err := a.Attach(); err != nil {
- t.Fatalf("Attach failed: %v", err)
- }
- if _, err := a.Attach(); err == nil {
- t.Fatalf("Attach should have failed, got %v want non-nil", err)
- }
-}
-
-func TestTruncate(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
- child, err := createFile(s.file, "test")
- if err != nil {
- t.Fatalf("createFile() failed: %v", err)
- }
- defer child.Close()
- want := []byte("foobar")
- w, err := child.WriteAt(want, 0)
- if err != nil {
- t.Fatalf("Write() failed: %v", err)
- }
- if w != len(want) {
- t.Fatalf("Write() was partial, got: %d, expected: %d", w, len(want))
- }
-
- _, l, err := s.file.Walk([]string{"test"})
- if err != nil {
- t.Fatalf("Walk(%s) failed: %v", "test", err)
- }
- if _, _, _, err := l.Open(p9.ReadOnly | p9.OpenTruncate); err != nil {
- t.Fatalf("Open() failed: %v", err)
- }
- _, mask, attr, err := l.GetAttr(p9.AttrMask{Size: true})
- if err != nil {
- t.Fatalf("GetAttr() failed: %v", err)
- }
- if !mask.Size {
- t.Fatalf("GetAttr() didn't return size: %+v", mask)
- }
- if attr.Size != 0 {
- t.Fatalf("truncate didn't work, want: 0, got: %d", attr.Size)
- }
- })
-}
-
-func TestMknod(t *testing.T) {
- runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
- _, err := s.file.Mknod("test", p9.ModeRegular|0777, 1, 2, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
- if err != nil {
- t.Fatalf("Mknod() failed: %v", err)
- }
-
- _, f, err := s.file.Walk([]string{"test"})
- if err != nil {
- t.Fatalf("Walk() failed: %v", err)
- }
- fd, _, _, err := f.Open(p9.ReadWrite)
- if err != nil {
- t.Fatalf("Open() failed: %v", err)
- }
- if fd != nil {
- defer fd.Close()
- }
- if err := testReadWrite(f, p9.ReadWrite, nil); err != nil {
- t.Fatalf("testReadWrite() failed: %v", err)
- }
- })
-}
-
-func BenchmarkWalkOne(b *testing.B) {
- path, name, err := setup(unix.S_IFDIR)
- if err != nil {
- b.Fatalf("%v", err)
- }
- defer os.RemoveAll(path)
-
- a, err := NewAttachPoint(path, Config{})
- if err != nil {
- b.Fatalf("NewAttachPoint failed: %v", err)
- }
- root, err := a.Attach()
- if err != nil {
- b.Fatalf("Attach failed, err: %v", err)
- }
- defer root.Close()
-
- names := []string{name}
- files := make([]p9.File, 0, 1000)
-
- b.ResetTimer()
- for i := 0; i < b.N; i++ {
- _, file, err := root.Walk(names)
- if err != nil {
- b.Fatalf("Walk(%q): %v", name, err)
- }
- files = append(files, file)
-
- // Avoid running out of FDs.
- if len(files) == cap(files) {
- b.StopTimer()
- for _, file := range files {
- file.Close()
- }
- files = files[:0]
- b.StartTimer()
- }
- }
-
- b.StopTimer()
- for _, file := range files {
- file.Close()
- }
-}
-
-func BenchmarkCreate(b *testing.B) {
- path, _, err := setup(unix.S_IFDIR)
- if err != nil {
- b.Fatalf("%v", err)
- }
- defer os.RemoveAll(path)
-
- a, err := NewAttachPoint(path, Config{})
- if err != nil {
- b.Fatalf("NewAttachPoint failed: %v", err)
- }
- root, err := a.Attach()
- if err != nil {
- b.Fatalf("Attach failed, err: %v", err)
- }
- defer root.Close()
-
- files := make([]p9.File, 0, 500)
- fds := make([]*fd.FD, 0, 500)
- uid := p9.UID(os.Getuid())
- gid := p9.GID(os.Getgid())
-
- b.ResetTimer()
- for i := 0; i < b.N; i++ {
- name := fmt.Sprintf("same-%d", i)
- fd, file, _, _, err := root.Create(name, p9.ReadOnly, 0777, uid, gid)
- if err != nil {
- b.Fatalf("Create(%q): %v", name, err)
- }
- files = append(files, file)
- if fd != nil {
- fds = append(fds, fd)
- }
-
- // Avoid running out of FDs.
- if len(files) == cap(files) {
- b.StopTimer()
- for _, file := range files {
- file.Close()
- }
- files = files[:0]
- for _, fd := range fds {
- fd.Close()
- }
- fds = fds[:0]
- b.StartTimer()
- }
- }
-
- b.StopTimer()
- for _, file := range files {
- file.Close()
- }
- for _, fd := range fds {
- fd.Close()
- }
-}
-
-func BenchmarkCreateDiffOwner(b *testing.B) {
- if !specutils.HasCapabilities(capability.CAP_CHOWN) {
- b.Skipf("Test requires CAP_CHOWN")
- }
-
- path, _, err := setup(unix.S_IFDIR)
- if err != nil {
- b.Fatalf("%v", err)
- }
- defer os.RemoveAll(path)
-
- a, err := NewAttachPoint(path, Config{})
- if err != nil {
- b.Fatalf("NewAttachPoint failed: %v", err)
- }
- root, err := a.Attach()
- if err != nil {
- b.Fatalf("Attach failed, err: %v", err)
- }
- defer root.Close()
-
- files := make([]p9.File, 0, 500)
- fds := make([]*fd.FD, 0, 500)
- gid := p9.GID(os.Getgid())
- const nobody = 65534
-
- b.ResetTimer()
- for i := 0; i < b.N; i++ {
- name := fmt.Sprintf("diff-%d", i)
- fd, file, _, _, err := root.Create(name, p9.ReadOnly, 0777, nobody, gid)
- if err != nil {
- b.Fatalf("Create(%q): %v", name, err)
- }
- files = append(files, file)
- if fd != nil {
- fds = append(fds, fd)
- }
-
- // Avoid running out of FDs.
- if len(files) == cap(files) {
- b.StopTimer()
- for _, file := range files {
- file.Close()
- }
- files = files[:0]
- for _, fd := range fds {
- fd.Close()
- }
- fds = fds[:0]
- b.StartTimer()
- }
- }
-
- b.StopTimer()
- for _, file := range files {
- file.Close()
- }
- for _, fd := range fds {
- fd.Close()
- }
-}
diff --git a/runsc/fsgofer/fsgofer_unsafe_state_autogen.go b/runsc/fsgofer/fsgofer_unsafe_state_autogen.go
new file mode 100644
index 000000000..d2f978fb9
--- /dev/null
+++ b/runsc/fsgofer/fsgofer_unsafe_state_autogen.go
@@ -0,0 +1,3 @@
+// automatically generated by stateify.
+
+package fsgofer
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 15:19:34 +0000