package syscallcompat import ( "os" "runtime" "syscall" "testing" "golang.org/x/sys/unix" ) 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) } // Test with absolute path err = emulateMknodat(-1, tmpDir+"/fifo2", unix.S_IFIFO, 0) if err != nil { t.Fatal(err) } _, err = os.Stat(tmpDir + "/fifo2") if err != nil { t.Fatal(err) } } func TestEmulateFchownat(t *testing.T) { t.Skipf("TODO") } // symlinkCheckMode looks if the mode bits in "st" say that this is a symlink. // Calls t.Fatal() if not. func symlinkCheckMode(t *testing.T, st syscall.Stat_t) { if runtime.GOOS == "darwin" { // On MacOS, symlinks don't carry their own permissions, so // only check the file type. if st.Mode&syscall.S_IFMT != syscall.S_IFLNK { t.Fatalf("This is not a symlink: mode = 0%o", st.Mode) } return } if st.Mode != 0120777 { t.Fatalf("Wrong mode, have 0%o, want 0120777", st.Mode) } } 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) } symlinkCheckMode(t, st) // Test with absolute path err = emulateSymlinkat("/foo/bar/baz", -1, tmpDir+"/symlink2") if err != nil { t.Fatal(err) } err = syscall.Lstat(tmpDir+"/symlink2", &st) if err != nil { t.Fatal(err) } symlinkCheckMode(t, st) } func TestEmulateMkdirat(t *testing.T) { err := emulateMkdirat(tmpDirFd, "mkdirat", 0700) 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") } // Test with absolute path err = emulateMkdirat(-1, tmpDir+"/mkdirat2", 0700) if err != nil { t.Fatal(err) } fi, err = os.Stat(tmpDir + "/mkdirat2") if err != nil { t.Fatal(err) } if !fi.IsDir() { t.Fatalf("mkdirat did not create a directory") } } func TestEmulateFstatat(t *testing.T) { var st unix.Stat_t // stat a normal file (size 3) f, err := os.Create(tmpDir + "/fstatat") if err != nil { t.Fatal(err) } _, err = f.Write([]byte("foo")) if err != nil { t.Fatal(err) } f.Close() err = emulateFstatat(tmpDirFd, "fstatat", &st, unix.AT_SYMLINK_NOFOLLOW) if err != nil { t.Fatal(err) } if st.Size != 3 { t.Errorf("wrong file size: %d", st.Size) } // stat a symlink and check that the size matches the length of the // symlink target. This proves that we have stat'ed the symlink itself. err = os.Symlink(tmpDir+"/fstatat", tmpDir+"/fstatatSymlink") if err != nil { t.Fatal(err) } err = emulateFstatat(tmpDirFd, "fstatatSymlink", &st, unix.AT_SYMLINK_NOFOLLOW) if err != nil { t.Fatal(err) } expectedSize := int64(len(tmpDir + "/fstatat")) if st.Size != expectedSize { t.Errorf("symlink size: expected=%d, got=%d", expectedSize, st.Size) } }