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Early mount partitions in SAR

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This commit is contained in:
topjohnwu 2019-06-25 02:47:16 -07:00
parent aac9e85e04
commit 4a212dba35
2 changed files with 11 additions and 1 deletions
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11
native/jni/init/early_mount.cpp
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@ -175,6 +175,8 @@ static void switch_root(const string &path) {
void SARInit::early_mount() {
char partname[32];
char fstype[32];
char block_dev[64];
full_read("/init", &self.buf, &self.sz);
full_read("/.backup/.magisk", &config.buf, &config.sz);
@ -191,6 +193,13 @@ void SARInit::early_mount() {
if (xmount("/dev/root", "/system_root", "ext4", MS_RDONLY, nullptr))
xmount("/dev/root", "/system_root", "erofs", MS_RDONLY, nullptr);
switch_root("/system_root");
// Make dev writable
xmount("tmpfs", "/dev", "tmpfs", 0, "mode=755");
mount_root(vendor);
mount_root(product);
mount_root(odm);
}
#define umount_root(name) \
@ -198,8 +207,8 @@ if (mnt_##name) \
umount("/" #name);
void MagiskInit::cleanup() {
BaseInit::cleanup();
umount(SELINUX_MNT);
BaseInit::cleanup();
umount_root(system);
umount_root(vendor);
umount_root(product);

1
native/jni/init/init.cpp
View File

@ -115,6 +115,7 @@ static int dump_manager(const char *path, mode_t mode) {
void BaseInit::cleanup() {
umount("/sys");
umount("/proc");
umount("/dev");
}
void BaseInit::re_exec_init() {