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Skip module loading for isolated processes #127

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Merged
JingMatrix merged 1 commit into from
Apr 12, 2026
Merged

Skip module loading for isolated processes #127

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2 changes: 2 additions & 0 deletions loader/src/include/daemon.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,8 @@ void Init(const char* path);

std::string GetTmpPath();

int Connect(uint8_t retry);

bool PingHeartbeat();

std::vector<Module> ReadModules();
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13 changes: 8 additions & 5 deletions loader/src/injector/module.cpp
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Expand Up @@ -331,29 +331,32 @@ void ZygiskContext::run_modules_post() {

void ZygiskContext::app_specialize_pre() {
uid_t uid = args.app->uid;
// Correct uid for isolated services
if (uid >= AID_ISOLATED_START && uid <= AID_ISOLATED_END && args.app->app_data_dir) {
bool is_isolated_aid = uid >= AID_ISOLATED_START && uid <= AID_ISOLATED_END;
if (is_isolated_aid && args.app->app_data_dir) {
const char *data_dir = nullptr;
data_dir = env->GetStringUTFChars(args.app->app_data_dir, nullptr);
if (data_dir != nullptr) {
struct stat st;
if (stat(data_dir, &st) != -1) {
// Correct uid for isolated services
uid = st.st_uid;
LOGV("identify isolated service [uid:%d, data_dir:%s]", uid, data_dir);
}
LOGV("Found isolated process [uid:%d, data_dir:%s]", uid, data_dir);
env->ReleaseStringUTFChars(args.app->app_data_dir, data_dir);
}
}

if (info_flags == 0) info_flags = zygiskd::GetProcessFlags(uid);
bool skip_zygiskd = is_isolated_aid && zygiskd::Connect(1) == -1;

if (!skip_zygiskd && info_flags == 0) info_flags = zygiskd::GetProcessFlags(uid);

if ((info_flags & UNMOUNT_MASK) == UNMOUNT_MASK) {
LOGI("[%s] is on the denylist", process);
flags |= DO_REVERT_UNMOUNT;
}

flags |= APP_SPECIALIZE;
run_modules_pre();
if (!skip_zygiskd) run_modules_pre();
}

void ZygiskContext::app_specialize_post() {
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