Elf Header, Program Header, Section Header 얻어오기

	#include <stdio.h> #include <stdlib.h>
	#include <stdint.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <unistd.h>
	#include <fcntl.h>
	#include <errno.h>
	#include <elf.h>
	#include <sys/mman.h>
	int main(int argc, char *argv[])
	{
	int ret;
	int fd;
	int i;
	uint8_t *mem;
	struct stat st;
	Elf32_Ehdr *ehdr = NULL;
	Elf32_Phdr *phdr = NULL;
	Elf32_Shdr *shdr = NULL;
	if (argc < 2) {
	printf("Usage: %s <elf file>\n", argv[0]);
	exit(0);
	}
	errno = 0;
	fd = open(argv[1], O_RDONLY);
	if (errno < 0 || fd == -1) {
	perror("open");
	exit(-1);
	}
	errno = 0;
	ret = fstat(fd, &st);
	if (ret < 0) {
	perror("fstat");
	exit(-1);
	}
	mem = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
	if (mem == MAP_FAILED) {
	perror("mmap");
	exit(-1);
	}
	ehdr = (Elf32_Ehdr *)mem;
	phdr = (Elf32_Phdr *)&mem[ehdr->e_phoff];
	shdr = (Elf32_Shdr *)&mem[ehdr->e_shoff];
	close(fd);
	munmap(mem, st.st_size);
	return 0;
	}