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Rename rules to preinit

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It is possible that we will allow more preinit files for modules.
Rename the partition and folders from rules to preinit.
This commit is contained in:
topjohnwu
2023-03-16 04:07:00 -07:00
committed by John Wu
parent 7048aa1014
commit 4e2b88b3d0
18 changed files with 110 additions and 118 deletions
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42
native/src/init/mount.cpp
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@@ -111,38 +111,40 @@ static void switch_root(const string &path) {
frm_rf(root);
}
static void mount_rules_dir(string path, dev_t rules_dev) {
if (!rules_dev) return;
xmknod(BLOCKDIR "/rules", S_IFBLK | 0600, rules_dev);
xmkdir(MIRRDIR "/rules", 0);
#define PREINITMNT MIRRDIR "/preinit"
static void mount_preinit_dir(string path, dev_t preinit_dev) {
if (!preinit_dev) return;
xmknod(PREINITDEV, S_IFBLK | 0600, preinit_dev);
xmkdir(PREINITMNT, 0);
bool mounted = false;
// first of all, find if rules dev is already mounted
// First, find if it is already mounted
for (auto &info : parse_mount_info("self")) {
if (info.root == "/" && info.device == rules_dev) {
if (info.root == "/" && info.device == preinit_dev) {
// Already mounted, just bind mount
xmount(info.target.data(), MIRRDIR "/rules", nullptr, MS_BIND, nullptr);
xmount(info.target.data(), PREINITMNT, nullptr, MS_BIND, nullptr);
mounted = true;
break;
}
}
if (mounted || mount(BLOCKDIR "/rules", MIRRDIR "/rules", "ext4", MS_RDONLY, nullptr) == 0 ||
mount(BLOCKDIR "/rules", MIRRDIR "/rules", "f2fs", MS_RDONLY, nullptr) == 0) {
string custom_rules_dir = find_rules_dir(MIRRDIR "/rules");
if (mounted || mount(PREINITDEV, PREINITMNT, "ext4", MS_RDONLY, nullptr) == 0 ||
mount(PREINITDEV, PREINITMNT, "f2fs", MS_RDONLY, nullptr) == 0) {
string preinit_dir = resolve_preinit_dir(PREINITMNT);
// Create bind mount
xmkdirs(RULESDIR, 0);
if (access(custom_rules_dir.data(), F_OK)) {
LOGW("empty rules: %s\n", custom_rules_dir.data());
xmkdirs(PREINITMIRR, 0);
if (access(preinit_dir.data(), F_OK)) {
LOGW("empty preinit: %s\n", preinit_dir.data());
} else {
LOGD("rules: %s\n", custom_rules_dir.data());
xmount(custom_rules_dir.data(), RULESDIR, nullptr, MS_BIND, nullptr);
mount_list.emplace_back(path += "/" RULESDIR);
LOGD("preinit: %s\n", preinit_dir.data());
xmount(preinit_dir.data(), PREINITMIRR, nullptr, MS_BIND, nullptr);
mount_list.emplace_back(path += "/" PREINITMIRR);
}
xumount2(MIRRDIR "/rules", MNT_DETACH);
xumount2(PREINITMNT, MNT_DETACH);
} else {
PLOGE("Failed to mount rules %u:%u", major(rules_dev), minor(rules_dev));
unlink(BLOCKDIR "/rules");
PLOGE("Failed to mount rules %u:%u", major(preinit_dev), minor(preinit_dev));
unlink(PREINITDEV);
}
}
@@ -246,7 +248,7 @@ void MagiskInit::setup_tmp(const char *path) {
xmkdir(BLOCKDIR, 0);
xmkdir(WORKERDIR, 0);
mount_rules_dir(path, rules_dev);
mount_preinit_dir(path, preinit_dev);
cp_afc(".backup/.magisk", INTLROOT "/config");
rm_rf(".backup");