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Init code rearrangement

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This commit is contained in:
topjohnwu
2019-06-30 11:39:13 -07:00
parent e8b73ba6d1
commit db8dd9f186
4 changed files with 46 additions and 63 deletions
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38
native/jni/init/init.h
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@ -1,3 +1,5 @@
#include <sys/mount.h>
#include <unistd.h>
#include <stdlib.h>
struct cmdline {
@ -21,8 +23,16 @@ protected:
cmdline *cmd;
char **argv;
void re_exec_init();
virtual void cleanup();
void exec_init(const char *init = "/init") {
cleanup();
execv(init, argv);
exit(1);
}
virtual void cleanup() {
umount("/sys");
umount("/proc");
umount("/dev");
}
public:
BaseInit(char *argv[], cmdline *cmd) : cmd(cmd), argv(argv) {}
virtual ~BaseInit() = default;
@ -52,7 +62,11 @@ protected:
virtual void setup_rootfs();
public:
RootFSInit(char *argv[], cmdline *cmd) : MagiskInit(argv, cmd) {};
void start() override;
void start() override {
early_mount();
setup_rootfs();
exec_init();
}
};
class SARCommon : public MagiskInit {
@ -63,7 +77,11 @@ protected:
void patch_rootdir();
public:
SARCommon(char *argv[], cmdline *cmd) : MagiskInit(argv, cmd) {};
void start() override;
void start() override {
early_mount();
patch_rootdir();
exec_init();
}
};
/* *******************
@ -75,7 +93,10 @@ protected:
void patch_fstab();
public:
FirstStageInit(char *argv[], cmdline *cmd) : BaseInit(argv, cmd) {};
void start() override;
void start() override {
patch_fstab();
exec_init("/system/bin/init");
}
};
class SecondStageInit : public SARCommon {
@ -120,13 +141,6 @@ public:
SARCompatInit(char *argv[], cmdline *cmd) : RootFSInit(argv, cmd) {};
};
static inline bool is_lnk(const char *name) {
struct stat st;
if (lstat(name, &st))
return false;
return S_ISLNK(st.st_mode);
}
void load_kernel_info(cmdline *cmd);
int dump_magisk(const char *path, mode_t mode);
int magisk_proxy_main(int argc, char *argv[]);