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Skip loading Magisk when detecting DSU

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Fix #4402

Co-authored-by: topjohnwu <topjohnwu@gmail.com>
This commit is contained in:
LoveSy 2021-12-29 13:04:09 +08:00 committed by GitHub
parent 3d88dd3123
commit 62ef8ade8f
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 29 additions and 1 deletions
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1
native/jni/init/init.hpp
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@ -38,6 +38,7 @@ extern std::vector<std::string> mount_list;
bool unxz(int fd, const uint8_t *buf, size_t size); bool unxz(int fd, const uint8_t *buf, size_t size);
void load_kernel_info(BootConfig *config); void load_kernel_info(BootConfig *config);
bool is_dsu();
bool check_two_stage(); bool check_two_stage();
void setup_klog(); void setup_klog();
const char *backup_init(); const char *backup_init();

23
native/jni/init/mount.cpp
View File

@ -93,7 +93,7 @@ static int64_t setup_block(bool write_block) {
} }
static bool is_lnk(const char *name) { static bool is_lnk(const char *name) {
struct stat st; struct stat st{};
if (lstat(name, &st)) if (lstat(name, &st))
return false; return false;
return S_ISLNK(st.st_mode); return S_ISLNK(st.st_mode);
@ -196,6 +196,27 @@ static void switch_root(const string &path) {
frm_rf(root); frm_rf(root);
} }
bool is_dsu() {
strcpy(blk_info.partname, "metadata");
xmkdir("/metadata", 0755);
if (setup_block(true) < 0 ||
xmount(blk_info.block_dev, "/metadata", "ext4", MS_RDONLY, nullptr)) {
PLOGE("Failed to mount /metadata");
return false;
} else {
run_finally f([]{ xumount2("/metadata", MNT_DETACH); });
constexpr auto dsu_status = "/metadata/gsi/dsu/install_status";
if (xaccess(dsu_status, F_OK) == 0) {
char status[PATH_MAX] = {0};
auto fp = xopen_file(dsu_status, "r");
fgets(status, sizeof(status), fp.get());
if (status == "ok"sv || status == "0"sv)
return true;
}
}
return false;
}
void MagiskInit::mount_rules_dir(const char *dev_base, const char *mnt_base) { void MagiskInit::mount_rules_dir(const char *dev_base, const char *mnt_base) {
char path[128]; char path[128];
xrealpath(dev_base, blk_info.block_dev); xrealpath(dev_base, blk_info.block_dev);

6
native/jni/init/twostage.cpp
View File

@ -63,6 +63,12 @@ static bool read_fstab_file(const char *fstab_file, vector<fstab_entry> &fstab)
extern uint32_t patch_verity(void *buf, uint32_t size); extern uint32_t patch_verity(void *buf, uint32_t size);
void FirstStageInit::prepare() { void FirstStageInit::prepare() {
if (is_dsu()) {
rename(backup_init(), "/init");
LOGI("Skip loading Magisk because of DSU\n");
return;
}
run_finally finally([]{ chdir("/"); }); run_finally finally([]{ chdir("/"); });
if (config->force_normal_boot) { if (config->force_normal_boot) {
xmkdirs(FSR "/system/bin", 0755); xmkdirs(FSR "/system/bin", 0755);