Magisk/jni/magiskboot/magiskboot.h

#ifndef _MAGISKBOOT_H_
#define _MAGISKBOOT_H_

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <string.h>

#include "bootimg.h"
#include "sha1.h"
#include "magisk.h"
#include "utils.h"

#define CHROMEOS_MAGIC  "CHROMEOS"
#define ELF32_MAGIC     "\x7f""ELF\x01"
#define ELF64_MAGIC     "\x7f""ELF\x02"

#define KERNEL_FILE     "kernel"
#define RAMDISK_FILE    "ramdisk.cpio"
#define SECOND_FILE     "second"
#define DTB_FILE        "dtb"
#define NEW_BOOT        "new-boot.img"

#define str(a) #a
#define xstr(a) str(a)

typedef enum {
    UNKNOWN,
    CHROMEOS,
    AOSP,
    ELF32,
    ELF64,
    GZIP,
    LZOP,
    XZ,
    LZMA,
    BZIP2,
    LZ4,
    LZ4_LEGACY,
    MTK
} file_t;

typedef enum {
    NONE,
    RM,
    MKDIR,
    ADD,
    EXTRACT,
    TEST,
    PATCH,
    BACKUP,
    RESTORE
} command_t;

extern char *SUP_LIST[];
extern char *SUP_EXT_LIST[];
extern file_t SUP_TYPE_LIST[];

// Global variables
extern unsigned char *kernel, *ramdisk, *second, *dtb, *extra;
extern boot_img_hdr hdr;
extern file_t ramdisk_type;
extern int mtk_kernel, mtk_ramdisk;

// Main entries
void unpack(const char *image);
void repack(const char* orig_image, const char* out_image);
void hexpatch(const char *image, const char *from, const char *to);
void parse_img(unsigned char *orig, size_t size);
int cpio_commands(const char *command, int argc, char *argv[]);
void cleanup();

// Compressions
void gzip(int mode, const char* filename, const unsigned char* buf, size_t size);
void lzma(int mode, const char* filename, const unsigned char* buf, size_t size);
void lz4(int mode, const char* filename, const unsigned char* buf, size_t size);
void bzip2(int mode, const char* filename, const unsigned char* buf, size_t size);
void lz4_legacy(int mode, const char* filename, const unsigned char* buf, size_t size);
int comp(file_t type, const char *to, const unsigned char *from, size_t size);
void comp_file(const char *method, const char *from, const char *to);
int decomp(file_t type, const char *to, const unsigned char *from, size_t size);
void decomp_file(char *from, const char *to);

// Utils
void mmap_ro(const char *filename, unsigned char **buf, size_t *size);
void mmap_rw(const char *filename, unsigned char **buf, size_t *size);
file_t check_type(const unsigned char *buf);
void write_zero(int fd, size_t size);
void mem_align(size_t *pos, size_t align);
void file_align(int fd, size_t align, int out);
int open_new(const char *filename);
void print_info();

#endif