github.com/Heebron/moby@v0.0.0-20221111184709-6eab4f55faf7/daemon/graphdriver/graphtest/testutil_unix.go (about)

     1  //go:build linux || freebsd
     2  // +build linux freebsd
     3  
     4  package graphtest // import "github.com/docker/docker/daemon/graphdriver/graphtest"
     5  
     6  import (
     7  	"os"
     8  	"path/filepath"
     9  	"syscall"
    10  	"testing"
    11  
    12  	contdriver "github.com/containerd/continuity/driver"
    13  	"github.com/docker/docker/daemon/graphdriver"
    14  	"golang.org/x/sys/unix"
    15  	"gotest.tools/v3/assert"
    16  	is "gotest.tools/v3/assert/cmp"
    17  )
    18  
    19  func verifyFile(t testing.TB, path string, mode os.FileMode, uid, gid uint32) {
    20  	fi, err := os.Stat(path)
    21  	assert.NilError(t, err)
    22  
    23  	actual := fi.Mode()
    24  	assert.Check(t, is.Equal(mode&os.ModeType, actual&os.ModeType), path)
    25  	assert.Check(t, is.Equal(mode&os.ModePerm, actual&os.ModePerm), path)
    26  	assert.Check(t, is.Equal(mode&os.ModeSticky, actual&os.ModeSticky), path)
    27  	assert.Check(t, is.Equal(mode&os.ModeSetuid, actual&os.ModeSetuid), path)
    28  	assert.Check(t, is.Equal(mode&os.ModeSetgid, actual&os.ModeSetgid), path)
    29  
    30  	if stat, ok := fi.Sys().(*syscall.Stat_t); ok {
    31  		assert.Check(t, is.Equal(uid, stat.Uid), path)
    32  		assert.Check(t, is.Equal(gid, stat.Gid), path)
    33  	}
    34  }
    35  
    36  func createBase(t testing.TB, driver graphdriver.Driver, name string) {
    37  	// We need to be able to set any perms
    38  	oldmask := unix.Umask(0)
    39  	defer unix.Umask(oldmask)
    40  
    41  	err := driver.CreateReadWrite(name, "", nil)
    42  	assert.NilError(t, err)
    43  
    44  	dirFS, err := driver.Get(name, "")
    45  	assert.NilError(t, err)
    46  	defer driver.Put(name)
    47  
    48  	subdir := filepath.Join(dirFS, "a subdir")
    49  	assert.NilError(t, os.Mkdir(subdir, 0705|os.ModeSticky))
    50  	assert.NilError(t, contdriver.LocalDriver.Lchown(subdir, 1, 2))
    51  
    52  	file := filepath.Join(dirFS, "a file")
    53  	err = os.WriteFile(file, []byte("Some data"), 0222|os.ModeSetuid)
    54  	assert.NilError(t, err)
    55  }
    56  
    57  func verifyBase(t testing.TB, driver graphdriver.Driver, name string) {
    58  	dirFS, err := driver.Get(name, "")
    59  	assert.NilError(t, err)
    60  	defer driver.Put(name)
    61  
    62  	subdir := filepath.Join(dirFS, "a subdir")
    63  	verifyFile(t, subdir, 0705|os.ModeDir|os.ModeSticky, 1, 2)
    64  
    65  	file := filepath.Join(dirFS, "a file")
    66  	verifyFile(t, file, 0222|os.ModeSetuid, 0, 0)
    67  
    68  	files, err := readDir(dirFS)
    69  	assert.NilError(t, err)
    70  	assert.Check(t, is.Len(files, 2))
    71  }