//
// Usage example:
//
-// Dex2oatFileWrapper<std::function<void ()>> file(open(...),
+// Dex2oatFileWrapper file(open(...),
// [name]() {
// unlink(name.c_str());
// });
// // At this point, when the Dex2oatFileWrapper is destructed, the cleanup function will not run
// // (leaving the file around; after the fd is closed).
//
-template <typename Cleanup>
class Dex2oatFileWrapper {
public:
- Dex2oatFileWrapper() : value_(-1), cleanup_(), do_cleanup_(true) {
+ Dex2oatFileWrapper() : value_(-1), cleanup_(), do_cleanup_(true), auto_close_(true) {
}
- Dex2oatFileWrapper(int value, Cleanup cleanup)
- : value_(value), cleanup_(cleanup), do_cleanup_(true) {}
+ Dex2oatFileWrapper(int value, std::function<void ()> cleanup)
+ : value_(value), cleanup_(cleanup), do_cleanup_(true), auto_close_(true) {}
+
+ Dex2oatFileWrapper(Dex2oatFileWrapper&& other) {
+ value_ = other.value_;
+ cleanup_ = other.cleanup_;
+ do_cleanup_ = other.do_cleanup_;
+ auto_close_ = other.auto_close_;
+ other.release();
+ }
+
+ Dex2oatFileWrapper& operator=(Dex2oatFileWrapper&& other) {
+ value_ = other.value_;
+ cleanup_ = other.cleanup_;
+ do_cleanup_ = other.do_cleanup_;
+ auto_close_ = other.auto_close_;
+ other.release();
+ return *this;
+ }
~Dex2oatFileWrapper() {
reset(-1);
}
void reset(int new_value) {
- if (value_ >= 0) {
+ if (auto_close_ && value_ >= 0) {
close(value_);
}
if (do_cleanup_ && cleanup_ != nullptr) {
value_ = new_value;
}
- void reset(int new_value, Cleanup new_cleanup) {
- if (value_ >= 0) {
+ void reset(int new_value, std::function<void ()> new_cleanup) {
+ if (auto_close_ && value_ >= 0) {
close(value_);
}
if (do_cleanup_ && cleanup_ != nullptr) {
cleanup_ = new_cleanup;
}
+ void DisableAutoClose() {
+ auto_close_ = false;
+ }
+
private:
+ void release() {
+ value_ = -1;
+ do_cleanup_ = false;
+ cleanup_ = nullptr;
+ }
int value_;
- Cleanup cleanup_;
+ std::function<void ()> cleanup_;
bool do_cleanup_;
+ bool auto_close_;
};
-int dexopt(const char* apk_path, uid_t uid, const char* pkgname, const char* instruction_set,
- int dexopt_needed, const char* oat_dir, int dexopt_flags,const char* compiler_filter,
- const char* volume_uuid ATTRIBUTE_UNUSED, const char* shared_libraries) {
- bool is_public = ((dexopt_flags & DEXOPT_PUBLIC) != 0);
- bool vm_safe_mode = (dexopt_flags & DEXOPT_SAFEMODE) != 0;
- bool debuggable = (dexopt_flags & DEXOPT_DEBUGGABLE) != 0;
- bool boot_complete = (dexopt_flags & DEXOPT_BOOTCOMPLETE) != 0;
- bool profile_guided = (dexopt_flags & DEXOPT_PROFILE_GUIDED) != 0;
-
- CHECK(pkgname != nullptr);
- CHECK(pkgname[0] != 0);
-
- // Public apps should not be compiled with profile information ever. Same goes for the special
- // package '*' used for the system server.
- Dex2oatFileWrapper<std::function<void ()>> reference_profile_fd;
- if (!is_public && pkgname[0] != '*') {
- // Open reference profile in read only mode as dex2oat does not get write permissions.
- const std::string pkgname_str(pkgname);
- reference_profile_fd.reset(open_reference_profile(uid, pkgname, /*read_write*/ false),
- [pkgname_str]() {
- clear_reference_profile(pkgname_str.c_str());
- });
- // Note: it's OK to not find a profile here.
+// (re)Creates the app image if needed.
+Dex2oatFileWrapper maybe_open_app_image(const char* out_oat_path, bool profile_guided,
+ bool is_public, int uid) {
+ // Use app images only if it is enabled (by a set image format) and we are compiling
+ // profile-guided (so the app image doesn't conservatively contain all classes).
+ if (!profile_guided) {
+ return Dex2oatFileWrapper();
}
- if ((dexopt_flags & ~DEXOPT_MASK) != 0) {
- LOG_FATAL("dexopt flags contains unknown fields\n");
+ const std::string image_path = create_image_filename(out_oat_path);
+ if (image_path.empty()) {
+ // Happens when the out_oat_path has an unknown extension.
+ return Dex2oatFileWrapper();
}
-
- char out_oat_path[PKG_PATH_MAX];
- if (!create_oat_out_path(apk_path, instruction_set, oat_dir, out_oat_path)) {
- return false;
+ char app_image_format[kPropertyValueMax];
+ bool have_app_image_format =
+ get_property("dalvik.vm.appimageformat", app_image_format, NULL) > 0;
+ if (!have_app_image_format) {
+ return Dex2oatFileWrapper();
+ }
+ // Recreate is true since we do not want to modify a mapped image. If the app is
+ // already running and we modify the image file, it can cause crashes (b/27493510).
+ Dex2oatFileWrapper wrapper_fd(
+ open_output_file(image_path.c_str(), true /*recreate*/, 0600 /*permissions*/),
+ [image_path]() { unlink(image_path.c_str()); });
+ if (wrapper_fd.get() < 0) {
+ // Could not create application image file. Go on since we can compile without it.
+ LOG(ERROR) << "installd could not create '" << image_path
+ << "' for image file during dexopt";
+ // If we have a valid image file path but no image fd, explicitly erase the image file.
+ if (unlink(image_path.c_str()) < 0) {
+ if (errno != ENOENT) {
+ PLOG(ERROR) << "Couldn't unlink image file " << image_path;
+ }
+ }
+ } else if (!set_permissions_and_ownership(
+ wrapper_fd.get(), is_public, uid, image_path.c_str())) {
+ ALOGE("installd cannot set owner '%s' for image during dexopt\n", image_path.c_str());
+ wrapper_fd.reset(-1);
}
- const char *input_file = apk_path;
- struct stat input_stat;
- memset(&input_stat, 0, sizeof(input_stat));
- stat(input_file, &input_stat);
+ return wrapper_fd;
+}
- // Open the input file.
- base::unique_fd input_fd(open(input_file, O_RDONLY, 0));
- if (input_fd.get() < 0) {
- ALOGE("installd cannot open '%s' for input during dexopt\n", input_file);
- return -1;
+// Creates the dexopt swap file if necessary and return its fd.
+// Returns -1 if there's no need for a swap or in case of errors.
+base::unique_fd maybe_open_dexopt_swap_file(const char* out_oat_path) {
+ if (!ShouldUseSwapFileForDexopt()) {
+ return base::unique_fd();
+ }
+ // Make sure there really is enough space.
+ char swap_file_name[PKG_PATH_MAX];
+ strcpy(swap_file_name, out_oat_path);
+ if (!add_extension_to_file_name(swap_file_name, ".swap")) {
+ return base::unique_fd();
+ }
+ base::unique_fd swap_fd(open_output_file(
+ swap_file_name, /*recreate*/true, /*permissions*/0600));
+ if (swap_fd.get() < 0) {
+ // Could not create swap file. Optimistically go on and hope that we can compile
+ // without it.
+ ALOGE("installd could not create '%s' for swap during dexopt\n", swap_file_name);
+ } else {
+ // Immediately unlink. We don't really want to hit flash.
+ if (unlink(swap_file_name) < 0) {
+ PLOG(ERROR) << "Couldn't unlink swap file " << swap_file_name;
+ }
}
+ return swap_fd;
+}
- // 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;
+// Opens the reference profiles if needed.
+// Note that the reference profile might not exist so it's OK if the fd will be -1.
+Dex2oatFileWrapper maybe_open_reference_profile(const char* pkgname, bool profile_guided,
+ bool is_public, int uid) {
+ // Public apps should not be compiled with profile information ever. Same goes for the special
+ // package '*' used for the system server.
+ if (profile_guided && !is_public && (pkgname[0] != '*')) {
+ // Open reference profile in read only mode as dex2oat does not get write permissions.
+ const std::string pkgname_str(pkgname);
+ return Dex2oatFileWrapper(
+ open_reference_profile(uid, pkgname, /*read_write*/ false),
+ [pkgname_str]() {
+ clear_reference_profile(pkgname_str.c_str());
+ });
+ } else {
+ return Dex2oatFileWrapper();
}
+}
+// Opens the vdex files and assigns the input fd to in_vdex_wrapper_fd and the output fd to
+// out_vdex_wrapper_fd. Returns true for success or false in case of errors.
+bool open_vdex_files(const char* apk_path, const char* out_oat_path, int dexopt_needed,
+ const char* instruction_set, bool is_public, int uid,
+ Dex2oatFileWrapper* in_vdex_wrapper_fd,
+ Dex2oatFileWrapper* out_vdex_wrapper_fd) {
+ CHECK(in_vdex_wrapper_fd != nullptr);
+ CHECK(out_vdex_wrapper_fd != nullptr);
// Open the existing VDEX. We do this before creating the new output VDEX, which will
// unlink the old one.
char in_odex_path[PKG_PATH_MAX];
int dexopt_action = abs(dexopt_needed);
bool is_odex_location = dexopt_needed < 0;
- base::unique_fd in_vdex_fd;
std::string in_vdex_path_str;
if (dexopt_action != DEX2OAT_FROM_SCRATCH) {
// Open the possibly existing vdex. If none exist, we pass -1 to dex2oat for input-vdex-fd.
path = in_odex_path;
} else {
ALOGE("installd cannot compute input vdex location for '%s'\n", apk_path);
- return -1;
+ return false;
}
} else {
path = out_oat_path;
in_vdex_path_str = create_vdex_filename(path);
if (in_vdex_path_str.empty()) {
ALOGE("installd cannot compute input vdex location for '%s'\n", path);
- return -1;
+ return false;
}
if (dexopt_action == DEX2OAT_FOR_BOOT_IMAGE) {
// When we dex2oat because iof boot image change, we are going to update
// in-place the vdex file.
- in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDWR, 0));
+ in_vdex_wrapper_fd->reset(open(in_vdex_path_str.c_str(), O_RDWR, 0));
} else {
- in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));
+ in_vdex_wrapper_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);
+ const std::string out_vdex_path_str = create_vdex_filename(out_oat_path);
if (out_vdex_path_str.empty()) {
- return -1;
+ return false;
}
- Dex2oatFileWrapper<std::function<void ()>> out_vdex_wrapper_fd;
- int out_vdex_fd = -1;
// If we are compiling because the boot image is out of date, we do not
// need to recreate a vdex, and can use the same existing one.
if (dexopt_action == DEX2OAT_FOR_BOOT_IMAGE &&
- in_vdex_fd != -1 &&
+ in_vdex_wrapper_fd->get() != -1 &&
in_vdex_path_str == out_vdex_path_str) {
- out_vdex_fd = in_vdex_fd;
+ out_vdex_wrapper_fd->reset(in_vdex_wrapper_fd->get());
+ // Disable auto close for the in wrapper fd (it will be done when destructing the out
+ // wrapper).
+ in_vdex_wrapper_fd->DisableAutoClose();
} else {
- out_vdex_wrapper_fd.reset(
+ out_vdex_wrapper_fd->reset(
open_output_file(out_vdex_path_str.c_str(), /*recreate*/true, /*permissions*/0644),
[out_vdex_path_str]() { unlink(out_vdex_path_str.c_str()); });
- out_vdex_fd = out_vdex_wrapper_fd.get();
- if (out_vdex_fd < 0) {
- ALOGE("installd cannot open '%s' for output during dexopt\n", out_vdex_path_str.c_str());
- return -1;
+ if (out_vdex_wrapper_fd->get() < 0) {
+ ALOGE("installd cannot open vdex'%s' during dexopt\n", out_vdex_path_str.c_str());
+ return false;
}
}
- if (!set_permissions_and_ownership(out_vdex_fd, is_public,
- uid, out_vdex_path_str.c_str())) {
+ if (!set_permissions_and_ownership(out_vdex_wrapper_fd->get(), is_public, uid,
+ out_vdex_path_str.c_str())) {
+ ALOGE("installd cannot set owner '%s' for vdex during dexopt\n", out_vdex_path_str.c_str());
+ return false;
+ }
+
+ // If we got here we successfully opened the vdex files.
+ return true;
+}
+
+// Opens the output oat file for the given apk.
+// If successful it stores the output path into out_oat_path and returns true.
+Dex2oatFileWrapper open_oat_out_file(const char* apk_path, const char* oat_dir,
+ bool is_public, int uid, const char* instruction_set, char* out_oat_path) {
+ if (!create_oat_out_path(apk_path, instruction_set, oat_dir, out_oat_path)) {
+ return Dex2oatFileWrapper();
+ }
+ const std::string out_oat_path_str(out_oat_path);
+ Dex2oatFileWrapper wrapper_fd(
+ open_output_file(out_oat_path, /*recreate*/true, /*permissions*/0644),
+ [out_oat_path_str]() { unlink(out_oat_path_str.c_str()); });
+ if (wrapper_fd.get() < 0) {
+ ALOGE("installd cannot open '%s' for output during dexopt\n", out_oat_path);
+ } else if (!set_permissions_and_ownership(wrapper_fd.get(), is_public, uid, out_oat_path)) {
+ ALOGE("installd cannot set owner '%s' for output during dexopt\n", out_oat_path);
+ wrapper_fd.reset(-1);
+ }
+ return wrapper_fd;
+}
+
+// Updates the access times of out_oat_path based on those from apk_path.
+void update_out_oat_access_times(const char* apk_path, const char* out_oat_path) {
+ struct stat input_stat;
+ memset(&input_stat, 0, sizeof(input_stat));
+ if (stat(apk_path, &input_stat) != 0) {
+ PLOG(ERROR) << "Could not stat " << apk_path << " during dexopt";
+ return;
+ }
+
+ struct utimbuf ut;
+ ut.actime = input_stat.st_atime;
+ ut.modtime = input_stat.st_mtime;
+ if (utime(out_oat_path, &ut) != 0) {
+ PLOG(WARNING) << "Could not update access times for " << apk_path << " during dexopt";
+ }
+}
+
+int dexopt(const char* apk_path, uid_t uid, const char* pkgname, const char* instruction_set,
+ int dexopt_needed, const char* oat_dir, int dexopt_flags,const char* compiler_filter,
+ const char* volume_uuid ATTRIBUTE_UNUSED, const char* shared_libraries) {
+ CHECK(pkgname != nullptr);
+ CHECK(pkgname[0] != 0);
+ if ((dexopt_flags & ~DEXOPT_MASK) != 0) {
+ LOG_FATAL("dexopt flags contains unknown fields\n");
+ }
+
+ bool is_public = ((dexopt_flags & DEXOPT_PUBLIC) != 0);
+ bool vm_safe_mode = (dexopt_flags & DEXOPT_SAFEMODE) != 0;
+ bool debuggable = (dexopt_flags & DEXOPT_DEBUGGABLE) != 0;
+ bool boot_complete = (dexopt_flags & DEXOPT_BOOTCOMPLETE) != 0;
+ bool profile_guided = (dexopt_flags & DEXOPT_PROFILE_GUIDED) != 0;
+
+ // Open the input file.
+ base::unique_fd input_fd(open(apk_path, O_RDONLY, 0));
+ if (input_fd.get() < 0) {
+ ALOGE("installd cannot open '%s' for input during dexopt\n", apk_path);
return -1;
}
- // Create a swap file if necessary.
- base::unique_fd swap_fd;
- if (ShouldUseSwapFileForDexopt()) {
- // Make sure there really is enough space.
- char swap_file_name[PKG_PATH_MAX];
- strcpy(swap_file_name, out_oat_path);
- if (add_extension_to_file_name(swap_file_name, ".swap")) {
- swap_fd.reset(open_output_file(swap_file_name, /*recreate*/true, /*permissions*/0600));
- }
- if (swap_fd.get() < 0) {
- // Could not create swap file. Optimistically go on and hope that we can compile
- // without it.
- ALOGE("installd could not create '%s' for swap during dexopt\n", swap_file_name);
- } else {
- // Immediately unlink. We don't really want to hit flash.
- if (unlink(swap_file_name) < 0) {
- PLOG(ERROR) << "Couldn't unlink swap file " << swap_file_name;
- }
- }
+ // Create the output OAT file.
+ char out_oat_path[PKG_PATH_MAX];
+ Dex2oatFileWrapper out_oat_fd = open_oat_out_file(apk_path, oat_dir, is_public, uid,
+ instruction_set, out_oat_path);
+ if (out_oat_fd.get() < 0) {
+ return -1;
}
- // Avoid generating an app image for extract only since it will not contain any classes.
- Dex2oatFileWrapper<std::function<void ()>> image_fd;
- const std::string image_path = create_image_filename(out_oat_path);
- if (!image_path.empty()) {
- char app_image_format[kPropertyValueMax];
- bool have_app_image_format =
- get_property("dalvik.vm.appimageformat", app_image_format, NULL) > 0;
- // Use app images only if it is enabled (by a set image format) and we are compiling
- // profile-guided (so the app image doesn't conservatively contain all classes).
- if (profile_guided && have_app_image_format) {
- // Recreate is true since we do not want to modify a mapped image. If the app is
- // already running and we modify the image file, it can cause crashes (b/27493510).
- image_fd.reset(open_output_file(image_path.c_str(),
- true /*recreate*/,
- 0600 /*permissions*/),
- [image_path]() { unlink(image_path.c_str()); }
- );
- if (image_fd.get() < 0) {
- // Could not create application image file. Go on since we can compile without
- // it.
- LOG(ERROR) << "installd could not create '"
- << image_path
- << "' for image file during dexopt";
- } else if (!set_permissions_and_ownership(image_fd.get(),
- is_public,
- uid,
- image_path.c_str())) {
- image_fd.reset(-1);
- }
- }
- // If we have a valid image file path but no image fd, explicitly erase the image file.
- if (image_fd.get() < 0) {
- if (unlink(image_path.c_str()) < 0) {
- if (errno != ENOENT) {
- PLOG(ERROR) << "Couldn't unlink image file " << image_path;
- }
- }
- }
+ // Open vdex files.
+ Dex2oatFileWrapper in_vdex_fd;
+ Dex2oatFileWrapper out_vdex_fd;
+ if (!open_vdex_files(apk_path, out_oat_path, dexopt_needed, instruction_set, is_public, uid,
+ &in_vdex_fd, &out_vdex_fd)) {
+ return -1;
}
- ALOGV("DexInv: --- BEGIN '%s' ---\n", input_file);
+ // Create a swap file if necessary.
+ base::unique_fd swap_fd = maybe_open_dexopt_swap_file(out_oat_path);
+
+ // Create the app image file if needed.
+ Dex2oatFileWrapper image_fd =
+ maybe_open_app_image(out_oat_path, profile_guided, is_public, uid);
+
+ // Open the reference profile if needed.
+ Dex2oatFileWrapper reference_profile_fd =
+ maybe_open_reference_profile(pkgname, profile_guided, is_public, uid);
+
+ ALOGV("DexInv: --- BEGIN '%s' ---\n", apk_path);
pid_t pid = fork();
if (pid == 0) {
}
// Pass dex2oat the relative path to the input file.
- const char *input_file_name = get_location_from_path(input_file);
+ const char *input_file_name = get_location_from_path(apk_path);
run_dex2oat(input_fd.get(),
out_oat_fd.get(),
in_vdex_fd.get(),
- out_vdex_fd,
+ out_vdex_fd.get(),
image_fd.get(),
input_file_name,
out_oat_path,
} else {
int res = wait_child(pid);
if (res == 0) {
- ALOGV("DexInv: --- END '%s' (success) ---\n", input_file);
+ ALOGV("DexInv: --- END '%s' (success) ---\n", apk_path);
} else {
- ALOGE("DexInv: --- END '%s' --- status=0x%04x, process failed\n", input_file, res);
+ ALOGE("DexInv: --- END '%s' --- status=0x%04x, process failed\n", apk_path, res);
return -1;
}
}
- struct utimbuf ut;
- ut.actime = input_stat.st_atime;
- ut.modtime = input_stat.st_mtime;
- utime(out_oat_path, &ut);
+ update_out_oat_access_times(apk_path, out_oat_path);
// We've been successful, don't delete output.
out_oat_fd.SetCleanup(false);
- out_vdex_wrapper_fd.SetCleanup(false);
+ out_vdex_fd.SetCleanup(false);
image_fd.SetCleanup(false);
reference_profile_fd.SetCleanup(false);
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