You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
4.0 KiB
100 lines
4.0 KiB
4 months ago
|
/* elfparse.h
|
||
|
|
* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
|
||
|
|
* Use of this source code is governed by a BSD-style license that can be
|
||
|
|
* found in the LICENSE file.
|
||
|
|
*
|
||
|
|
* Elf parsing.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _ELFPARSE_H_
|
||
|
|
#define _ELFPARSE_H_
|
||
|
|
|
||
|
|
#include <elf.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These structs come from elf.h
|
||
|
|
* The version in elf.h do not pack these structs so
|
||
|
|
* portability could be an issue.
|
||
|
|
* The compiler could mess with aligmment depending on arch
|
||
|
|
* so I'm redefining them here and packing them to 1-byte alignment.
|
||
|
|
*/
|
||
|
|
#if !defined(EI_NIDENT)
|
||
|
|
#define EI_NIDENT (16)
|
||
|
|
#endif
|
||
|
|
#pragma pack(push)
|
||
|
|
#pragma pack(1)
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
unsigned char e_ident[EI_NIDENT]; /* Magic number and other info */
|
||
|
|
Elf32_Half e_type; /* Object file type */
|
||
|
|
Elf32_Half e_machine; /* Architecture */
|
||
|
|
Elf32_Word e_version; /* Object file version */
|
||
|
|
Elf32_Addr e_entry; /* Entry point virtual address */
|
||
|
|
Elf32_Off e_phoff; /* Program header table file offset */
|
||
|
|
Elf32_Off e_shoff; /* Section header table file offset */
|
||
|
|
Elf32_Word e_flags; /* Processor-specific flags */
|
||
|
|
Elf32_Half e_ehsize; /* ELF header size in bytes */
|
||
|
|
Elf32_Half e_phentsize; /* Program header table entry size */
|
||
|
|
Elf32_Half e_phnum; /* Program header table entry count */
|
||
|
|
Elf32_Half e_shentsize; /* Section header table entry size */
|
||
|
|
Elf32_Half e_shnum; /* Section header table entry count */
|
||
|
|
Elf32_Half e_shstrndx; /* Section header string table index */
|
||
|
|
} Minijail_Elf32_Ehdr;
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
unsigned char e_ident[EI_NIDENT]; /* Magic number and other info */
|
||
|
|
Elf64_Half e_type; /* Object file type */
|
||
|
|
Elf64_Half e_machine; /* Architecture */
|
||
|
|
Elf64_Word e_version; /* Object file version */
|
||
|
|
Elf64_Addr e_entry; /* Entry point virtual address */
|
||
|
|
Elf64_Off e_phoff; /* Program header table file offset */
|
||
|
|
Elf64_Off e_shoff; /* Section header table file offset */
|
||
|
|
Elf64_Word e_flags; /* Processor-specific flags */
|
||
|
|
Elf64_Half e_ehsize; /* ELF header size in bytes */
|
||
|
|
Elf64_Half e_phentsize; /* Program header table entry size */
|
||
|
|
Elf64_Half e_phnum; /* Program header table entry count */
|
||
|
|
Elf64_Half e_shentsize; /* Section header table entry size */
|
||
|
|
Elf64_Half e_shnum; /* Section header table entry count */
|
||
|
|
Elf64_Half e_shstrndx; /* Section header string table index */
|
||
|
|
} Minijail_Elf64_Ehdr;
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
Elf32_Word p_type; /* Segment type */
|
||
|
|
Elf32_Off p_offset; /* Segment file offset */
|
||
|
|
Elf32_Addr p_vaddr; /* Segment virtual address */
|
||
|
|
Elf32_Addr p_paddr; /* Segment physical address */
|
||
|
|
Elf32_Word p_filesz; /* Segment size in file */
|
||
|
|
Elf32_Word p_memsz; /* Segment size in memory */
|
||
|
|
Elf32_Word p_flags; /* Segment flags */
|
||
|
|
Elf32_Word p_align; /* Segment alignment */
|
||
|
|
} Minijail_Elf32_Phdr;
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
Elf64_Word p_type; /* Segment type */
|
||
|
|
Elf64_Word p_flags; /* Segment flags */
|
||
|
|
Elf64_Off p_offset; /* Segment file offset */
|
||
|
|
Elf64_Addr p_vaddr; /* Segment virtual address */
|
||
|
|
Elf64_Addr p_paddr; /* Segment physical address */
|
||
|
|
Elf64_Xword p_filesz; /* Segment size in file */
|
||
|
|
Elf64_Xword p_memsz; /* Segment size in memory */
|
||
|
|
Elf64_Xword p_align; /* Segment alignment */
|
||
|
|
} Minijail_Elf64_Phdr;
|
||
|
|
#pragma pack(pop)
|
||
|
|
/* End of definitions from elf.h */
|
||
|
|
|
||
|
|
enum ElfTypeEnum { ELFERROR=0, ELFSTATIC=1, ELFDYNAMIC=2 };
|
||
|
|
typedef enum ElfTypeEnum ElfType;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is the initial amount of the ELF file we try and read.
|
||
|
|
* It is the same value that the kernel uses (BINPRM_BUF_SIZE).
|
||
|
|
*/
|
||
|
|
#define HEADERSIZE 128
|
||
|
|
|
||
|
|
ElfType get_elf_linkage(const char *path);
|
||
|
|
|
||
|
|
#endif /* _ELFPARSE_H_ */
|