Magisk/native/jni/magiskboot/cpio.hpp
2021-08-13 04:53:11 -07:00

56 lines
1.4 KiB
C++

#pragma once
#include <stdint.h>
#include <string>
#include <memory>
#include <map>
#include <string_view>
struct cpio_newc_header;
struct cpio_entry {
uint32_t mode;
uint32_t uid;
uint32_t gid;
uint32_t filesize;
void *data;
explicit cpio_entry(uint32_t mode = 0);
explicit cpio_entry(const cpio_newc_header *h);
~cpio_entry() { free(data); }
};
class cpio {
public:
struct StringCmp {
using is_transparent = void;
bool operator()(std::string_view a, std::string_view b) const {
return a < b;
}
};
using entry_map = std::map<std::string, std::unique_ptr<cpio_entry>, StringCmp>;
void load_cpio(const char *file);
void dump(const char *file);
void rm(const char *name, bool r = false);
void extract();
bool extract(const char *name, const char *file);
bool exists(const char *name);
void add(mode_t mode, const char *name, const char *file);
void mkdir(mode_t mode, const char *name);
void ln(const char *target, const char *name);
bool mv(const char *from, const char *to);
protected:
entry_map entries;
static void extract_entry(const entry_map::value_type &e, const char *file);
void rm(entry_map::iterator &it);
void mv(entry_map::iterator &it, const char *name);
private:
void dump(FILE *out);
void insert(std::string_view name, cpio_entry *e);
void load_cpio(const char *buf, size_t sz);
};