166 lines
3.1 KiB
C++
166 lines
3.1 KiB
C++
#include <sys/mount.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <vector>
|
|
|
|
struct cmdline {
|
|
bool system_as_root;
|
|
bool force_normal_boot;
|
|
char slot[3];
|
|
char dt_dir[128];
|
|
};
|
|
|
|
struct raw_data {
|
|
uint8_t *buf = nullptr;
|
|
size_t sz = 0;
|
|
|
|
raw_data() = default;
|
|
raw_data(const raw_data&) = delete;
|
|
raw_data(raw_data &&d) {
|
|
buf = d.buf;
|
|
sz = d.sz;
|
|
d.buf = nullptr;
|
|
d.sz = 0;
|
|
}
|
|
~raw_data() {
|
|
free(buf);
|
|
}
|
|
};
|
|
|
|
/* *************
|
|
* Base classes
|
|
* *************/
|
|
|
|
class BaseInit {
|
|
protected:
|
|
cmdline *cmd;
|
|
char **argv;
|
|
std::vector<std::string> mount_list;
|
|
|
|
void exec_init(const char *init = "/init") {
|
|
cleanup();
|
|
execv(init, argv);
|
|
exit(1);
|
|
}
|
|
virtual void cleanup();
|
|
public:
|
|
BaseInit(char *argv[], cmdline *cmd) :
|
|
cmd(cmd), argv(argv), mount_list{"/sys", "/proc", "/dev"} {}
|
|
virtual ~BaseInit() = default;
|
|
virtual void start() = 0;
|
|
};
|
|
|
|
class MagiskInit : public BaseInit {
|
|
protected:
|
|
raw_data self;
|
|
|
|
virtual void early_mount() = 0;
|
|
bool read_dt_fstab(const char *name, char *partname, char *fstype);
|
|
bool patch_sepolicy(const char *file = "/sepolicy");
|
|
public:
|
|
MagiskInit(char *argv[], cmdline *cmd) : BaseInit(argv, cmd) {};
|
|
};
|
|
|
|
class RootFSBase : public MagiskInit {
|
|
protected:
|
|
int root = -1;
|
|
|
|
virtual void setup_rootfs();
|
|
public:
|
|
RootFSBase(char *argv[], cmdline *cmd) : MagiskInit(argv, cmd) {};
|
|
void start() override {
|
|
early_mount();
|
|
setup_rootfs();
|
|
exec_init();
|
|
}
|
|
};
|
|
|
|
class SARBase : public MagiskInit {
|
|
protected:
|
|
raw_data config;
|
|
dev_t system_dev;
|
|
|
|
void backup_files();
|
|
void patch_rootdir();
|
|
public:
|
|
SARBase(char *argv[], cmdline *cmd) : MagiskInit(argv, cmd) {};
|
|
void start() override {
|
|
early_mount();
|
|
patch_rootdir();
|
|
exec_init();
|
|
}
|
|
};
|
|
|
|
/* *************
|
|
* 2 Stage Init
|
|
* *************/
|
|
|
|
class ABFirstStageInit : public BaseInit {
|
|
protected:
|
|
void prepare();
|
|
public:
|
|
ABFirstStageInit(char *argv[], cmdline *cmd) : BaseInit(argv, cmd) {};
|
|
void start() override {
|
|
prepare();
|
|
exec_init("/system/bin/init");
|
|
}
|
|
};
|
|
|
|
class AFirstStageInit : public BaseInit {
|
|
protected:
|
|
void prepare();
|
|
public:
|
|
AFirstStageInit(char *argv[], cmdline *cmd) : BaseInit(argv, cmd) {};
|
|
void start() override {
|
|
prepare();
|
|
exec_init();
|
|
}
|
|
};
|
|
|
|
class SecondStageInit : public SARBase {
|
|
protected:
|
|
void early_mount() override;
|
|
void cleanup() override { /* Do not do any cleanup */ }
|
|
public:
|
|
SecondStageInit(char *argv[]) : SARBase(argv, nullptr) {};
|
|
};
|
|
|
|
/* ***********
|
|
* Legacy SAR
|
|
* ***********/
|
|
|
|
class SARInit : public SARBase {
|
|
protected:
|
|
void early_mount() override;
|
|
public:
|
|
SARInit(char *argv[], cmdline *cmd) : SARBase(argv, cmd) {};
|
|
};
|
|
|
|
/* **********
|
|
* Initramfs
|
|
* **********/
|
|
|
|
class RootFSInit : public RootFSBase {
|
|
protected:
|
|
void early_mount() override;
|
|
public:
|
|
RootFSInit(char *argv[], cmdline *cmd) : RootFSBase(argv, cmd) {};
|
|
};
|
|
|
|
/* ****************
|
|
* Compat-mode SAR
|
|
* ****************/
|
|
|
|
class SARCompatInit : public RootFSBase {
|
|
protected:
|
|
void early_mount() override;
|
|
void setup_rootfs() override;
|
|
public:
|
|
SARCompatInit(char *argv[], cmdline *cmd) : RootFSBase(argv, cmd) {};
|
|
};
|
|
|
|
void load_kernel_info(cmdline *cmd);
|
|
int dump_magisk(const char *path, mode_t mode);
|
|
int magisk_proxy_main(int argc, char *argv[]);
|
|
void setup_klog();
|