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Cancel recursive bind

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vvb2060 2023-04-07 01:54:40 +08:00 committed by John Wu
parent 9f7d410959
commit ee50da566f
3 changed files with 16 additions and 15 deletions
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7
native/src/init/mount.cpp
View File

@ -126,7 +126,7 @@ static void switch_root(const string &path) {
#define PREINITMNT MIRRDIR "/preinit" #define PREINITMNT MIRRDIR "/preinit"
static void mount_preinit_dir(string path, string preinit_dev) { static void mount_preinit_dir(string preinit_dev) {
if (preinit_dev.empty()) return; if (preinit_dev.empty()) return;
strcpy(blk_info.partname, preinit_dev.data()); strcpy(blk_info.partname, preinit_dev.data());
strcpy(blk_info.block_dev, PREINITDEV); strcpy(blk_info.block_dev, PREINITDEV);
@ -161,7 +161,6 @@ static void mount_preinit_dir(string path, string preinit_dev) {
} else { } else {
LOGD("preinit: %s\n", preinit_dir.data()); LOGD("preinit: %s\n", preinit_dir.data());
xmount(preinit_dir.data(), PREINITMIRR, nullptr, MS_BIND, nullptr); xmount(preinit_dir.data(), PREINITMIRR, nullptr, MS_BIND, nullptr);
mount_list.emplace_back(path += "/" PREINITMIRR);
} }
xumount2(PREINITMNT, MNT_DETACH); xumount2(PREINITMNT, MNT_DETACH);
} else { } else {
@ -271,7 +270,7 @@ void MagiskInit::setup_tmp(const char *path) {
xmkdir(BLOCKDIR, 0); xmkdir(BLOCKDIR, 0);
xmkdir(WORKERDIR, 0); xmkdir(WORKERDIR, 0);
mount_preinit_dir(path, preinit_dev); mount_preinit_dir(preinit_dev);
cp_afc(".backup/.magisk", MAIN_CONFIG); cp_afc(".backup/.magisk", MAIN_CONFIG);
rm_rf(".backup"); rm_rf(".backup");
@ -281,7 +280,7 @@ void MagiskInit::setup_tmp(const char *path) {
xsymlink("./magisk", applet_names[i]); xsymlink("./magisk", applet_names[i]);
xsymlink("./magiskpolicy", "supolicy"); xsymlink("./magiskpolicy", "supolicy");
xmount(".", path, nullptr, MS_BIND | MS_REC, nullptr); xmount(".", path, nullptr, MS_BIND, nullptr);
chdir("/"); chdir("/");
} }

6
native/src/init/rootdir.cpp
View File

@ -224,9 +224,8 @@ void MagiskInit::patch_ro_root() {
setup_tmp(tmp_dir.data()); setup_tmp(tmp_dir.data());
chdir(tmp_dir.data()); chdir(tmp_dir.data());
// Recreate original sbin structure if necessary
if (tmp_dir == "/sbin") { if (tmp_dir == "/sbin") {
// Mount system_root mirror // Recreate original sbin structure
xmkdir(ROOTMIR, 0755); xmkdir(ROOTMIR, 0755);
xmount("/", ROOTMIR, nullptr, MS_BIND, nullptr); xmount("/", ROOTMIR, nullptr, MS_BIND, nullptr);
recreate_sbin(ROOTMIR "/sbin", true); recreate_sbin(ROOTMIR "/sbin", true);
@ -272,7 +271,8 @@ void MagiskInit::patch_ro_root() {
// Oculus Go will use a special sepolicy if unlocked // Oculus Go will use a special sepolicy if unlocked
if (access("/sepolicy.unlocked", F_OK) == 0) { if (access("/sepolicy.unlocked", F_OK) == 0) {
patch_sepolicy("/sepolicy.unlocked", ROOTOVL "/sepolicy.unlocked"); patch_sepolicy("/sepolicy.unlocked", ROOTOVL "/sepolicy.unlocked");
} else if ((access(SPLIT_PLAT_CIL, F_OK) != 0 && access("/sepolicy", F_OK) == 0) || !hijack_sepolicy()) { } else if ((access(SPLIT_PLAT_CIL, F_OK) != 0 && access("/sepolicy", F_OK) == 0) ||
!hijack_sepolicy()) {
patch_sepolicy("/sepolicy", ROOTOVL "/sepolicy"); patch_sepolicy("/sepolicy", ROOTOVL "/sepolicy");
} }

18
native/src/init/selinux.cpp
View File

@ -15,12 +15,13 @@ void MagiskInit::patch_sepolicy(const char *in, const char *out) {
sepol->magisk_rules(); sepol->magisk_rules();
// Custom rules // Custom rules
if (auto dir = xopen_dir(PREINITMIRR)) { if (auto dir = xopen_dir("/data/" PREINITMIRR)) {
for (dirent *entry; (entry = xreaddir(dir.get()));) { for (dirent *entry; (entry = xreaddir(dir.get()));) {
auto rule = PREINITMIRR "/"s + entry->d_name + "/sepolicy.rule"; auto name = "/data/" PREINITMIRR "/"s + entry->d_name;
auto rule = name + "/sepolicy.rule";
if (xaccess(rule.data(), R_OK) == 0 && if (xaccess(rule.data(), R_OK) == 0 &&
access((PREINITMIRR "/"s + entry->d_name + "/disable").data(), F_OK) != 0 && access((name + "/disable").data(), F_OK) != 0 &&
access((PREINITMIRR "/"s + entry->d_name + "/remove").data(), F_OK) != 0) { access((name + "/remove").data(), F_OK) != 0) {
LOGD("Loading custom sepolicy patch: [%s]\n", rule.data()); LOGD("Loading custom sepolicy patch: [%s]\n", rule.data());
sepol->load_rule_file(rule.data()); sepol->load_rule_file(rule.data());
} }
@ -96,12 +97,13 @@ bool MagiskInit::hijack_sepolicy() {
// Read all custom rules into memory // Read all custom rules into memory
string rules; string rules;
if (auto dir = xopen_dir(PREINITMIRR)) { if (auto dir = xopen_dir("/data/" PREINITMIRR)) {
for (dirent *entry; (entry = xreaddir(dir.get()));) { for (dirent *entry; (entry = xreaddir(dir.get()));) {
auto rule_file = PREINITMIRR "/"s + entry->d_name + "/sepolicy.rule"; auto name = "/data/" PREINITMIRR "/"s + entry->d_name;
auto rule_file = name + "/sepolicy.rule";
if (xaccess(rule_file.data(), R_OK) == 0 && if (xaccess(rule_file.data(), R_OK) == 0 &&
access((PREINITMIRR "/"s + entry->d_name + "/disable").data(), F_OK) != 0 && access((name + "/disable").data(), F_OK) != 0 &&
access((PREINITMIRR "/"s + entry->d_name + "/remove").data(), F_OK) != 0) { access((name + "/remove").data(), F_OK) != 0) {
LOGD("Load custom sepolicy patch: [%s]\n", rule_file.data()); LOGD("Load custom sepolicy patch: [%s]\n", rule_file.data());
full_read(rule_file.data(), rules); full_read(rule_file.data(), rules);
rules += '\n'; rules += '\n';