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Disable several features in Jellybean

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topjohnwu
2019-01-20 17:52:19 -05:00
parent 50b55a77de
commit f24342f117
3 changed files with 29 additions and 16 deletions
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native/jni/daemon/daemon.cpp
+18 -5
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@@ -19,8 +19,11 @@
#include "daemon.h"
#include "selinux.h"
#include "db.h"
#include "resetprop.h"
#include "flags.h"
int SDK_INT = -1;
static void get_client_cred(int fd, struct ucred *cred) {
socklen_t ucred_length = sizeof(*cred);
if(getsockopt(fd, SOL_SOCKET, SO_PEERCRED, cred, &ucred_length))
@@ -44,7 +47,7 @@ static void *request_handler(void *args) {
if (credential.uid != 0) {
write_int(client, ROOT_REQUIRED);
close(client);
return NULL;
return nullptr;
}
default:
break;
@@ -100,6 +103,16 @@ static void main_daemon() {
xdup2(fd, STDIN_FILENO);
close(fd);
// Get API level
parse_prop_file("/system/build.prop", [](auto key, auto val) -> bool {
if (strcmp(key, "ro.build.version.sdk") == 0) {
LOGI("* Device API level: %s\n", val);
SDK_INT = atoi(val);
return false;
}
return true;
});
struct sockaddr_un sun;
socklen_t len = setup_sockaddr(&sun, MAIN_SOCKET);
fd = xsocket(AF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0);
@@ -116,20 +129,20 @@ static void main_daemon() {
sigemptyset(&block_set);
sigaddset(&block_set, SIGUSR1);
sigaddset(&block_set, SIGUSR2);
pthread_sigmask(SIG_SETMASK, &block_set, NULL);
pthread_sigmask(SIG_SETMASK, &block_set, nullptr);
// Ignore SIGPIPE
struct sigaction act;
memset(&act, 0, sizeof(act));
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, NULL);
sigaction(SIGPIPE, &act, nullptr);
// Loop forever to listen for requests
while(1) {
int *client = new int;
*client = xaccept4(fd, NULL, NULL, SOCK_CLOEXEC);
*client = xaccept4(fd, nullptr, nullptr, SOCK_CLOEXEC);
pthread_t thread;
xpthread_create(&thread, NULL, request_handler, client);
xpthread_create(&thread, nullptr, request_handler, client);
// Detach the thread, we will never join it
pthread_detach(thread);
}