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Hook up denylist IPC routines

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topjohnwu
2021-08-19 04:55:17 -07:00
parent ffe47300a1
commit decdd54c19
5 changed files with 69 additions and 14 deletions
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13
native/jni/zygisk/hook.cpp
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@@ -129,12 +129,6 @@ string get_class_name(JNIEnv *env, jclass clazz) {
// -----------------------------------------------------------------
// TODO
int remote_check_denylist(int uid, const char *process) { return 0; }
void remote_request_unmount() {}
// -----------------------------------------------------------------
#define DCL_HOOK_FUNC(ret, func, ...) \
ret (*old_##func)(__VA_ARGS__); \
ret new_##func(__VA_ARGS__)
@@ -161,10 +155,11 @@ DCL_HOOK_FUNC(int, fork) {
DCL_HOOK_FUNC(int, selinux_android_setcontext,
uid_t uid, int isSystemServer, const char *seinfo, const char *pkgname) {
if (g_ctx && g_ctx->flags[DENY_FLAG]) {
// Ask magiskd to cleanup the mount namespace before switching context
// Ask magiskd to cleanup our mount namespace before switching context
// This is the latest point where we can still connect to the magiskd main socket
remote_request_unmount();
LOGD("zygisk: process successfully hidden\n");
if (remote_request_unmount() == 0) {
LOGD("zygisk: mount namespace cleaned up\n");
}
}
return old_selinux_android_setcontext(uid, isSystemServer, seinfo, pkgname);
}