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|
package syscallcompat
import (
"fmt"
"io/ioutil"
"os"
"syscall"
"testing"
"golang.org/x/sys/unix"
)
var tmpDir string
var tmpDirFd int
func TestMain(m *testing.M) {
origWd, err := os.Getwd()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
parent := "/tmp/gocryptfs-test-parent"
err = os.MkdirAll(parent, 0700)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
tmpDir, err = ioutil.TempDir(parent, "syscallcompat")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
dirf, err := os.Open(tmpDir)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
defer dirf.Close()
tmpDirFd = int(dirf.Fd())
// Run the tests
r := m.Run()
// Check that we are in the same directory again (the emulated syscalls
// use Fchdir a lot)
cwd, _ := os.Getwd()
if cwd != origWd {
fmt.Printf("working dir has changed from %q to %q", origWd, cwd)
os.Exit(1)
}
os.Exit(r)
}
func TestEmulateOpenat(t *testing.T) {
_, err := emulateOpenat(tmpDirFd, "testOpenAt", 0, 0)
if err == nil {
t.Errorf("should have failed")
}
fd, err := os.Create(tmpDir + "/testOpenAt")
if err != nil {
t.Fatal(err)
}
fd.Close()
rawFd, err := emulateOpenat(tmpDirFd, "testOpenAt", 0, 0)
if err != nil {
t.Fatal(err)
}
defer syscall.Close(rawFd)
if rawFd < 0 {
t.Fatalf("rawFd=%d", rawFd)
}
}
func TestEmulateRenameat(t *testing.T) {
os.Mkdir(tmpDir+"/dir1", 0700)
dir1, err := os.Open(tmpDir + "/dir1")
if err != nil {
t.Fatal(err)
}
defer dir1.Close()
os.Mkdir(tmpDir+"/dir2", 0700)
dir2, err := os.Open(tmpDir + "/dir2")
if err != nil {
t.Fatal(err)
}
defer dir2.Close()
fd, err := os.Create(tmpDir + "/dir1/f1")
if err != nil {
t.Fatal(err)
}
fd.Close()
err = emulateRenameat(int(dir1.Fd()), "f1", int(dir2.Fd()), "f2")
if err != nil {
t.Fatal(err)
}
_, err = os.Stat(tmpDir + "/dir2/f2")
if err != nil {
t.Fatal(err)
}
}
func TestEmulateUnlinkat(t *testing.T) {
os.Mkdir(tmpDir+"/unlink1", 0700)
dirfd, err := os.Open(tmpDir + "/unlink1")
if err != nil {
t.Fatal(err)
}
defer dirfd.Close()
// Try to delete file
fd, err := os.Create(tmpDir + "/unlink1/f1")
if err != nil {
t.Fatal(err)
}
fd.Close()
err = emulateUnlinkat(int(dirfd.Fd()), "f1", 0)
if err != nil {
t.Fatal(err)
}
_, err = os.Stat(tmpDir + "/unlink1/f1")
if err == nil {
t.Fatalf("file not deleted!")
}
// Try to delete dir
err = os.Mkdir(tmpDir+"/unlink1/d1", 0700)
if err != nil {
t.Fatal(err)
}
err = emulateUnlinkat(int(dirfd.Fd()), "d1", 0)
if err == nil {
t.Fatalf("this should fail due to missing AT_REMOVEDIR flag")
}
err = emulateUnlinkat(int(dirfd.Fd()), "d1", unix.AT_REMOVEDIR)
if err != nil {
t.Fatal(err)
}
_, err = os.Stat(tmpDir + "/unlink1/d1")
if err == nil {
t.Fatalf("dir not deleted!")
}
}
func TestEmulateMknodat(t *testing.T) {
err := emulateMknodat(tmpDirFd, "fifo1", unix.S_IFIFO, 0)
if err != nil {
t.Fatal(err)
}
_, err = os.Stat(tmpDir + "/fifo1")
if err != nil {
t.Fatal(err)
}
}
func TestEmulateFchmodat(t *testing.T) {
fd, err := os.Create(tmpDir + "/chmod")
if err != nil {
t.Fatal(err)
}
err = fd.Chmod(0654)
if err != nil {
t.Fatal(err)
}
fd.Close()
// Chmod a normal file
err = emulateFchmodat(tmpDirFd, "chmod", 0600, 0)
if err != nil {
t.Fatal(err)
}
var st syscall.Stat_t
err = syscall.Lstat(tmpDir+"/chmod", &st)
if err != nil {
t.Fatal(err)
}
if st.Mode != 0100600 {
t.Fatalf("Wrong mode: have %o, want %o", st.Mode, 0100600)
}
// Chmod a symlink (original file should not change)
err = os.Symlink(tmpDir+"/chmod", tmpDir+"/chmodSymlink")
if err != nil {
t.Fatal(err)
}
err = emulateFchmodat(tmpDirFd, "chmodSymlink", 0123, unix.AT_SYMLINK_NOFOLLOW)
if err != nil {
t.Fatal(err)
}
err = syscall.Lstat(tmpDir+"/chmod", &st)
if err != nil {
t.Fatal(err)
}
if st.Mode != 0100600 {
t.Fatalf("Wrong mode: have %o, want %o", st.Mode, 0100600)
}
}
func TestEmulateFchownat(t *testing.T) {
t.Skipf("TODO")
}
func TestEmulateSymlinkat(t *testing.T) {
err := emulateSymlinkat("/foo/bar/baz", tmpDirFd, "symlink1")
if err != nil {
t.Fatal(err)
}
var st syscall.Stat_t
err = syscall.Lstat(tmpDir+"/symlink1", &st)
if err != nil {
t.Fatal(err)
}
if st.Mode != 0120777 {
t.Fatalf("Wrong mode, have %o, want 0120777", st.Mode)
}
}
func TestEmulateMkdirat(t *testing.T) {
err := emulateMkdirat(tmpDirFd, "mkdirat", 0100)
if err != nil {
t.Fatal(err)
}
fi, err := os.Stat(tmpDir + "/mkdirat")
if err != nil {
t.Fatal(err)
}
if !fi.IsDir() {
t.Fatalf("mkdirat did not create a directory")
}
}
|
