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Allow zygote to execve

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Allow zygote to execute other programs (such as dex2oat).
This fixes the bug that cause ART framework boot images failed to load
and result to extremely serious performance degradation.

Fix #1195
This commit is contained in:
topjohnwu 2019-03-09 22:58:05 -05:00
parent faf4d76388
commit 4581354e7a
1 changed files with 6 additions and 3 deletions
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9
native/jni/magiskhide/proc_monitor.cpp
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@ -424,11 +424,13 @@ void proc_monitor() {
if (attaches[pid] && check_pid(pid)) if (attaches[pid] && check_pid(pid))
continue; continue;
break; break;
case PTRACE_EVENT_EXEC:
case PTRACE_EVENT_EXIT: case PTRACE_EVENT_EXIT:
PTRACE_LOG("exited with status: [%d]\n", msg); PTRACE_LOG("exited or execve\n", msg);
attaches[pid] = false; attaches[pid] = false;
unknowns[pid] = false; unknowns[pid] = false;
break; xptrace(PTRACE_DETACH, pid);
continue;
default: default:
PTRACE_LOG("unknown event: %d\n", WEVENT(status)); PTRACE_LOG("unknown event: %d\n", WEVENT(status));
break; break;
@ -438,7 +440,8 @@ void proc_monitor() {
} else if (WSTOPSIG(status) == SIGSTOP) { } else if (WSTOPSIG(status) == SIGSTOP) {
if (attaches[pid]) { if (attaches[pid]) {
PTRACE_LOG("SIGSTOP from zygote child\n"); PTRACE_LOG("SIGSTOP from zygote child\n");
xptrace(PTRACE_SETOPTIONS, pid, nullptr, PTRACE_O_TRACECLONE | PTRACE_O_TRACEEXIT); xptrace(PTRACE_SETOPTIONS, pid, nullptr,
PTRACE_O_TRACECLONE | PTRACE_O_TRACEEXEC | PTRACE_O_TRACEEXIT);
} else { } else {
PTRACE_LOG("SIGSTOP from unknown\n"); PTRACE_LOG("SIGSTOP from unknown\n");
unknowns[pid] = true; unknowns[pid] = true;