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Update policy for handling /data/adb

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topjohnwu 2020-05-18 23:29:26 -07:00
parent 99ef20627a
commit fc1844b4df
1 changed files with 24 additions and 26 deletions
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50
native/jni/core/bootstages.cpp
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@ -20,7 +20,6 @@
using namespace std;
static bool pfs_done = false;
static bool no_secure_dir = false;
static bool safe_mode = false;
/*********
@ -225,11 +224,6 @@ static void collect_logs(bool reset) {
* Entry points *
****************/
[[noreturn]] static void exit_post_fs_data() {
close(xopen(UNBLOCKFILE, O_RDONLY | O_CREAT, 0));
pthread_exit(nullptr);
}
void post_fs_data(int client) {
// ack
write_int(client, 0);
@ -239,7 +233,7 @@ void post_fs_data(int client) {
xmount(nullptr, "/", nullptr, MS_REMOUNT | MS_RDONLY, nullptr);
if (!check_data())
exit_post_fs_data();
goto unblock_init;
collect_logs(true);
@ -249,17 +243,21 @@ void post_fs_data(int client) {
unlock_blocks();
if (access(SECURE_DIR, F_OK) != 0) {
/* If the folder is not automatically created by the system,
* do NOT proceed further. Manual creation of the folder
* will cause bootloops on FBE devices. */
LOGE(SECURE_DIR " is not present, abort...");
no_secure_dir = true;
exit_post_fs_data();
if (SDK_INT < 24) {
// There is no FBE pre 7.0, we can directly create the folder without issues
xmkdir(SECURE_DIR, 0700);
} else {
/* If the folder is not automatically created by Android,
* do NOT proceed further. Manual creation of the folder
* will cause bootloops on FBE devices. */
LOGE(SECURE_DIR " is not present, abort...\n");
goto unblock_init;
}
}
if (!magisk_env()) {
LOGE("* Magisk environment setup incomplete, abort\n");
exit_post_fs_data();
goto unblock_init;
}
if (getprop("persist.sys.safemode", true) == "1") {
@ -273,10 +271,12 @@ void post_fs_data(int client) {
handle_modules();
}
// We still want to do magic mount because root itself might need it
// We still do magic mount because root itself might need it
magic_mount();
pfs_done = true;
exit_post_fs_data();
unblock_init:
close(xopen(UNBLOCKFILE, O_RDONLY | O_CREAT, 0));
}
void late_start(int client) {
@ -287,14 +287,6 @@ void late_start(int client) {
collect_logs(false);
if (no_secure_dir) {
// It's safe to create the folder at this point if the system didn't create it
if (access(SECURE_DIR, F_OK) != 0)
xmkdir(SECURE_DIR, 0700);
// And reboot to make proper setup possible
reboot();
}
if (!pfs_done || safe_mode)
return;
@ -310,10 +302,16 @@ void boot_complete(int client) {
collect_logs(false);
if (!pfs_done || safe_mode)
if (safe_mode)
return;
auto_start_magiskhide();
/* It's safe to create the folder at this point if the system didn't create it
* Magisk Manager should finish up the remaining environment setup */
if (access(SECURE_DIR, F_OK) != 0)
xmkdir(SECURE_DIR, 0700);
if (pfs_done)
auto_start_magiskhide();
if (access(MANAGERAPK, F_OK) == 0) {
// Install Magisk Manager if exists