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Add mount ns kernel support detection

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This commit is contained in:
topjohnwu 2017-07-03 01:02:11 +08:00
parent 52a23e7904
commit cf565d0145
1 changed files with 16 additions and 11 deletions
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27
jni/magiskhide/proc_monitor.c
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@ -22,12 +22,6 @@ static char init_ns[32], zygote_ns[2][32];
static int log_pid, log_fd;
static char *buffer;
static void read_namespace(const int pid, char* target, const size_t size) {
char path[32];
snprintf(path, sizeof(path), "/proc/%d/ns/mnt", pid);
xreadlink(path, target, size);
}
// Workaround for the lack of pthread_cancel
static void quit_pthread(int sig) {
err_handler = do_nothing;
@ -53,6 +47,22 @@ static void quit_pthread(int sig) {
pthread_exit(NULL);
}
static void proc_monitor_err() {
LOGD("proc_monitor: error occured, stopping magiskhide services\n");
quit_pthread(SIGUSR1);
}
static void read_namespace(const int pid, char* target, const size_t size) {
char path[32];
snprintf(path, sizeof(path), "/proc/%d/ns/mnt", pid);
if (access(path, R_OK) == -1) {
LOGE("proc_monitor: Your kernel doesn't support mount namespace :(\n");
proc_monitor_err();
return;
}
xreadlink(path, target, size);
}
static void store_zygote_ns(int pid) {
if (zygote_num == 2) return;
do {
@ -62,11 +72,6 @@ static void store_zygote_ns(int pid) {
++zygote_num;
}
static void proc_monitor_err() {
LOGD("proc_monitor: error occured, stopping magiskhide services\n");
quit_pthread(SIGUSR1);
}
void proc_monitor() {
// Register the cancel signal
struct sigaction act;