Merge "Revert "Revert "Pass --output-vdex-fd and input-vdex-fd to dex2oat."""

    ALOGE("execv(%s) failed: %s\n", PATCHOAT_BIN, strerror(errno));

}

static void run_dex2oat(int zip_fd, int oat_fd, int vdex_fd, int image_fd,

static void run_dex2oat(int zip_fd, int oat_fd, int input_vdex_fd, int output_vdex_fd, int image_fd,

        const char* input_file_name, const char* output_file_name, int swap_fd,

        const char *instruction_set, const char* compiler_filter, bool vm_safe_mode,

        bool debuggable, bool post_bootcomplete, int profile_fd, const char* shared_libraries) {

    char zip_fd_arg[strlen("--zip-fd=") + MAX_INT_LEN];

    char zip_location_arg[strlen("--zip-location=") + PKG_PATH_MAX];

    char vdex_fd_arg[strlen("--vdex-fd=") + MAX_INT_LEN];

    char input_vdex_fd_arg[strlen("--input-vdex-fd=") + MAX_INT_LEN];

    char output_vdex_fd_arg[strlen("--output-vdex-fd=") + MAX_INT_LEN];

    char oat_fd_arg[strlen("--oat-fd=") + MAX_INT_LEN];

    char oat_location_arg[strlen("--oat-location=") + PKG_PATH_MAX];

    char instruction_set_arg[strlen("--instruction-set=") + MAX_INSTRUCTION_SET_LEN];

    sprintf(zip_fd_arg, "--zip-fd=%d", zip_fd);

    sprintf(zip_location_arg, "--zip-location=%s", input_file_name);

    sprintf(vdex_fd_arg, "--vdex-fd=%d", vdex_fd);

    sprintf(input_vdex_fd_arg, "--input-vdex-fd=%d", input_vdex_fd);

    sprintf(output_vdex_fd_arg, "--output-vdex-fd=%d", output_vdex_fd);

    sprintf(oat_fd_arg, "--oat-fd=%d", oat_fd);

    sprintf(oat_location_arg, "--oat-location=%s", output_file_name);

    sprintf(instruction_set_arg, "--instruction-set=%s", instruction_set);

    ALOGV("Running %s in=%s out=%s\n", DEX2OAT_BIN, input_file_name, output_file_name);

    const char* argv[8  // program name, mandatory arguments and the final NULL

    const char* argv[9  // program name, mandatory arguments and the final NULL

                     + (have_dex2oat_isa_variant ? 1 : 0)

                     + (have_dex2oat_isa_features ? 1 : 0)

                     + (have_dex2oat_Xms_flag ? 2 : 0)

    argv[i++] = DEX2OAT_BIN;

    argv[i++] = zip_fd_arg;

    argv[i++] = zip_location_arg;

    argv[i++] = vdex_fd_arg;

    argv[i++] = input_vdex_fd_arg;

    argv[i++] = output_vdex_fd_arg;

    argv[i++] = oat_fd_arg;

    argv[i++] = oat_location_arg;

    argv[i++] = instruction_set_arg;

    return true;

}

static bool IsOutputDalvikCache(const char* oat_dir) {

  // InstallerConnection.java (which invokes installd) transforms Java null arguments

  // into '!'. Play it safe by handling it both.

  // TODO: ensure we never get null.

  // TODO: pass a flag instead of inferring if the output is dalvik cache.

  return oat_dir == nullptr || oat_dir[0] == '!';

}

static bool create_oat_out_path(const char* apk_path, const char* instruction_set,

            const char* oat_dir, /*out*/ char* out_oat_path) {

    // Early best-effort check whether we can fit the the path into our buffers.

        return false;

    }

    if (oat_dir != NULL && oat_dir[0] != '!') {

    if (!IsOutputDalvikCache(oat_dir)) {

        if (validate_apk_path(oat_dir)) {

            ALOGE("invalid oat_dir '%s'\n", oat_dir);

            ALOGE("cannot validate apk path with oat_dir '%s'\n", oat_dir);

            return false;

        }

        if (!calculate_oat_file_path(out_oat_path, oat_dir, apk_path, instruction_set)) {

        return -1;

    }

    // If invoking patchoat, open the VDEX associated with the OAT too.

    // Create the output OAT file.

    const std::string out_oat_path_str(out_oat_path);

    Dex2oatFileWrapper<std::function<void ()>> out_oat_fd(

            open_output_file(out_oat_path, /*recreate*/true, /*permissions*/0644),

            [out_oat_path_str]() { unlink(out_oat_path_str.c_str()); });

    if (out_oat_fd.get() < 0) {

        ALOGE("installd cannot open '%s' for output during dexopt\n", out_oat_path);

        return -1;

    }

    if (!set_permissions_and_ownership(out_oat_fd.get(), is_public, uid, out_oat_path)) {

        return -1;

    }

    // Open the existing VDEX. We do this before creating the new output VDEX, which will

    // unlink the old one.

    base::unique_fd in_vdex_fd;

    std::string in_vdex_path_str;

    base::unique_fd input_vdex_fd;

    if (dexopt_needed == DEXOPT_PATCHOAT_NEEDED

        || dexopt_needed == DEXOPT_SELF_PATCHOAT_NEEDED) {

        // `input_file` is the OAT file to be relocated. The VDEX has to be there as well.

        in_vdex_path_str = create_vdex_filename(input_file);

        if (in_vdex_path_str.empty()) {

            ALOGE("installd cannot compute input vdex location for '%s'\n", input_file);

            return -1;

        }

        input_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));

        if (input_vdex_fd.get() < 0) {

            ALOGE("installd cannot open '%s' for input during dexopt\n", in_vdex_path_str.c_str());

        in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));

        if (in_vdex_fd.get() < 0) {

            ALOGE("installd cannot open '%s' for input during dexopt: %s\n",

                in_vdex_path_str.c_str(), strerror(errno));

            return -1;

        }

    }

    // Create the output OAT file.

    const std::string out_oat_path_str(out_oat_path);

    Dex2oatFileWrapper<std::function<void ()>> out_oat_fd(

            open_output_file(out_oat_path, /*recreate*/true, /*permissions*/0644),

            [out_oat_path_str]() { unlink(out_oat_path_str.c_str()); });

    if (out_oat_fd.get() < 0) {

        ALOGE("installd cannot open '%s' for output during dexopt\n", out_oat_path);

    } else {

        // Open the possibly existing vdex in the `out_oat_path`. If none exist, we pass -1

        // to dex2oat for input-vdex-fd.

        in_vdex_path_str = create_vdex_filename(out_oat_path);

        if (in_vdex_path_str.empty()) {

            ALOGE("installd cannot compute input vdex location for '%s'\n", out_oat_path);

            return -1;

        }

    if (!set_permissions_and_ownership(out_oat_fd.get(), is_public, uid, out_oat_path)) {

        in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));

        // If there is no vdex file in out_oat_path, check if we have a vdex

        // file next to the odex file. For other failures, we will just pass a -1 fd.

        if (in_vdex_fd.get() < 0 && (errno == ENOENT) && IsOutputDalvikCache(oat_dir)) {

            if (calculate_odex_file_path(in_odex_path, apk_path, instruction_set)) {

              in_vdex_path_str = create_vdex_filename(std::string(in_odex_path));

              if (in_vdex_path_str.empty()) {

                  ALOGE("installd cannot compute input vdex location for '%s'\n", in_odex_path);

                  return -1;

              }

              in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));

            }

        }

    }

    // Infer the name of the output VDEX and create it.

    const std::string out_vdex_path_str = create_vdex_filename(out_oat_path_str);

        if (dexopt_needed == DEXOPT_PATCHOAT_NEEDED

            || dexopt_needed == DEXOPT_SELF_PATCHOAT_NEEDED) {

            run_patchoat(input_fd.get(),

                         input_vdex_fd.get(),

                         in_vdex_fd.get(),

                         out_oat_fd.get(),

                         out_vdex_fd.get(),

                         input_file,

            const char *input_file_name = get_location_from_path(input_file);

            run_dex2oat(input_fd.get(),

                        out_oat_fd.get(),

                        in_vdex_fd.get(),

                        out_vdex_fd.get(),

                        image_fd.get(),

                        input_file_name,