/** private.h - private definitions for libelf.* Copyright (C) 1995 - 2007 Michael Riepe** This library is free software; you can redistribute it and/or* modify it under the terms of the GNU Library General Public* License as published by the Free Software Foundation; either* version 2 of the License, or (at your option) any later version.** This library is distributed in the hope that it will be useful,* but WITHOUT ANY WARRANTY; without even the implied warranty of* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU* Library General Public License for more details.** You should have received a copy of the GNU Library General Public* License along with this library; if not, write to the Free Software* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA*//* @(#) $Id: private.h,v 1.39 2008年05月23日 08:15:35 michael Exp $ */#ifndef _PRIVATE_H#define _PRIVATE_H#define __LIBELF_INTERNAL__ 1#if HAVE_CONFIG_H# include <config.h>#endif /* HAVE_CONFIG_H *//** Workaround for GLIBC bug:* include <stdint.h> before <sys/types.h>*/#if HAVE_STDINT_H#include <stdint.h>#endif#include <sys/types.h>#if STDC_HEADERS# include <stdlib.h># include <string.h>#else /* STDC_HEADERS */extern void *malloc(), *realloc();extern void free(), bcopy(), abort();extern int strcmp(), strncmp(), memcmp();extern void *memcpy(), *memmove(), *memset();#endif /* STDC_HEADERS */#if defined(_WIN32)#include <io.h>#else#if HAVE_UNISTD_H# include <unistd.h>#else /* HAVE_UNISTD_H */extern int read(), write(), close();extern off_t lseek();#if HAVE_FTRUNCATEextern int ftruncate();#endif /* HAVE_FTRUNCATE */#endif /* HAVE_UNISTD_H */#endif /* defined(_WIN32) */#ifndef SEEK_SET#define SEEK_SET 0#endif /* SEEK_SET */#ifndef SEEK_CUR#define SEEK_CUR 1#endif /* SEEK_CUR */#ifndef SEEK_END#define SEEK_END 2#endif /* SEEK_END */#if !HAVE_MEMCMP# define memcmp strncmp#endif /* !HAVE_MEMCMP */#if !HAVE_MEMCPY# define memcpy(d,s,n) bcopy(s,d,n)#endif /* !HAVE_MEMCPY */#if !HAVE_MEMMOVE# define memmove(d,s,n) bcopy(s,d,n)#endif /* !HAVE_MEMMOVE */#if !HAVE_MEMSET# define memset _elf_memsetextern void *_elf_memset();#endif /* !HAVE_MEMSET */#if HAVE_STRUCT_NLIST_DECLARATION# define nlist __override_nlist_declaration#endif /* HAVE_STRUCT_NLIST_DECLARATION */#if __LIBELF_NEED_LINK_H# include <link.h>#elif __LIBELF_NEED_SYS_LINK_H# include <sys/link.h>#endif /* __LIBELF_NEED_LINK_H */#include <libelf.h>#if HAVE_STRUCT_NLIST_DECLARATION# undef nlist#endif /* HAVE_STRUCT_NLIST_DECLARATION */#if __LIBELF64#include <gelf.h>#endif /* __LIBELF64 */typedef struct Scn_Data Scn_Data;/** ELF descriptor*/struct Elf {/* common */size_t e_size; /* file/member size */size_t e_dsize; /* size of memory image */Elf_Kind e_kind; /* kind of file */char* e_data; /* file/member data */char* e_rawdata; /* file/member raw data */size_t e_idlen; /* identifier size */int e_fd; /* file descriptor */unsigned e_count; /* activation count *//* archive members (still common) */Elf* e_parent; /* NULL if not an archive member */size_t e_next; /* 0 if not an archive member */size_t e_base; /* 0 if not an archive member */Elf* e_link; /* next archive member or NULL */Elf_Arhdr* e_arhdr; /* archive member header or NULL *//* archives */size_t e_off; /* current member offset (for elf_begin) */Elf* e_members; /* linked list of active archive members */char* e_symtab; /* archive symbol table */size_t e_symlen; /* length of archive symbol table */char* e_strtab; /* archive string table */size_t e_strlen; /* length of archive string table *//* ELF files */unsigned e_class; /* ELF class */unsigned e_encoding; /* ELF data encoding */unsigned e_version; /* ELF version */char* e_ehdr; /* ELF header */char* e_phdr; /* ELF program header table */size_t e_phnum; /* size of program header table */Elf_Scn* e_scn_1; /* first section */Elf_Scn* e_scn_n; /* last section */unsigned e_elf_flags; /* elf flags (ELF_F_*) */unsigned e_ehdr_flags; /* ehdr flags (ELF_F_*) */unsigned e_phdr_flags; /* phdr flags (ELF_F_*) *//* misc flags */unsigned e_readable : 1; /* file is readable */unsigned e_writable : 1; /* file is writable */unsigned e_disabled : 1; /* e_fd has been disabled */unsigned e_cooked : 1; /* e_data was modified */unsigned e_free_syms : 1; /* e_symtab is malloc'ed */unsigned e_unmap_data : 1; /* e_data is mmap'ed */unsigned e_memory : 1; /* created by elf_memory() *//* magic number for debugging */long e_magic;};#define ELF_MAGIC 0x012b649e#define INIT_ELF {\/* e_size */ 0,\/* e_dsize */ 0,\/* e_kind */ ELF_K_NONE,\/* e_data */ NULL,\/* e_rawdata */ NULL,\/* e_idlen */ 0,\/* e_fd */ -1,\/* e_count */ 1,\/* e_parent */ NULL,\/* e_next */ 0,\/* e_base */ 0,\/* e_link */ NULL,\/* e_arhdr */ NULL,\/* e_off */ 0,\/* e_members */ NULL,\/* e_symtab */ NULL,\/* e_symlen */ 0,\/* e_strtab */ NULL,\/* e_strlen */ 0,\/* e_class */ ELFCLASSNONE,\/* e_encoding */ ELFDATANONE,\/* e_version */ EV_NONE,\/* e_ehdr */ NULL,\/* e_phdr */ NULL,\/* e_phnum */ 0,\/* e_scn_1 */ NULL,\/* e_scn_n */ NULL,\/* e_elf_flags */ 0,\/* e_ehdr_flags */ 0,\/* e_phdr_flags */ 0,\/* e_readable */ 0,\/* e_writable */ 0,\/* e_disabled */ 0,\/* e_cooked */ 0,\/* e_free_syms */ 0,\/* e_unmap_data */ 0,\/* e_memory */ 0,\/* e_magic */ ELF_MAGIC\}/** Section descriptor*/struct Elf_Scn {Elf_Scn* s_link; /* pointer to next Elf_Scn */Elf* s_elf; /* pointer to elf descriptor */size_t s_index; /* number of this section */unsigned s_scn_flags; /* section flags (ELF_F_*) */unsigned s_shdr_flags; /* shdr flags (ELF_F_*) */Scn_Data* s_data_1; /* first data buffer */Scn_Data* s_data_n; /* last data buffer */Scn_Data* s_rawdata; /* raw data buffer *//* data copied from shdr */unsigned s_type; /* section type */size_t s_offset; /* section offset */size_t s_size; /* section size *//* misc flags */unsigned s_freeme : 1; /* this Elf_Scn was malloc'ed *//* section header */union {#if __LIBELF64Elf64_Shdr u_shdr64;#endif /* __LIBELF64 */Elf32_Shdr u_shdr32;} s_uhdr;/* magic number for debugging */long s_magic;};#define s_shdr32 s_uhdr.u_shdr32#define s_shdr64 s_uhdr.u_shdr64#define SCN_MAGIC 0x012c747d#define INIT_SCN {\/* s_link */ NULL,\/* s_elf */ NULL,\/* s_index */ 0,\/* s_scn_flags */ 0,\/* s_shdr_flags */ 0,\/* s_data_1 */ NULL,\/* s_data_n */ NULL,\/* s_rawdata */ NULL,\/* s_type */ SHT_NULL,\/* s_offset */ 0,\/* s_size */ 0,\/* s_freeme */ 0,\/* s_uhdr */ {{0,}},\/* s_magic */ SCN_MAGIC\}/** Data descriptor*/struct Scn_Data {Elf_Data sd_data; /* must be first! */Scn_Data* sd_link; /* pointer to next Scn_Data */Elf_Scn* sd_scn; /* pointer to section */char* sd_memdata; /* memory image of section */unsigned sd_data_flags; /* data flags (ELF_F_*) *//* misc flags */unsigned sd_freeme : 1; /* this Scn_Data was malloc'ed */unsigned sd_free_data : 1; /* sd_memdata is malloc'ed *//* magic number for debugging */long sd_magic;};#define DATA_MAGIC 0x01072639#define INIT_DATA {\{\/* d_buf */ NULL,\/* d_type */ ELF_T_BYTE,\/* d_size */ 0,\/* d_off */ 0,\/* d_align */ 0,\/* d_version */ EV_NONE\},\/* sd_link */ NULL,\/* sd_scn */ NULL,\/* sd_memdata */ NULL,\/* sd_data_flags */ 0,\/* sd_freeme */ 0,\/* sd_free_data */ 0,\/* sd_magic */ DATA_MAGIC\}/** Private status variables*/extern unsigned _elf_version;extern int _elf_errno;extern int _elf_fill;extern int _elf_sanity_checks;#define SANITY_CHECK_STRPTR (1u << 0)/** Private functions*/extern void *_elf_read __P((Elf*, void*, size_t, size_t));extern void *_elf_mmap __P((Elf*));extern int _elf_cook __P((Elf*));extern char *_elf_getehdr __P((Elf*, unsigned));extern char *_elf_getphdr __P((Elf*, unsigned));extern Elf_Data *_elf_xlatetom __P((const Elf*, Elf_Data*, const Elf_Data*));extern Elf_Type _elf_scn_type __P((unsigned));extern size_t _elf32_xltsize __P((const Elf_Data *__src, unsigned __dv, unsigned __encode, int __tof));extern size_t _elf64_xltsize __P((const Elf_Data *__src, unsigned __dv, unsigned __encode, int __tof));extern int _elf_update_shnum(Elf *__elf, size_t __shnum);extern Elf_Scn *_elf_first_scn(Elf *__elf);/** Special translators*/extern size_t _elf_verdef_32L11_tof __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verdef_32L11_tom __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verdef_32M11_tof __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verdef_32M11_tom __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verdef_64L11_tof __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verdef_64L11_tom __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verdef_64M11_tof __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verdef_64M11_tom __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verneed_32L11_tof __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verneed_32L11_tom __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verneed_32M11_tof __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verneed_32M11_tom __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verneed_64L11_tof __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verneed_64L11_tom __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verneed_64M11_tof __P((unsigned char *dst, const unsigned char *src, size_t n));extern size_t _elf_verneed_64M11_tom __P((unsigned char *dst, const unsigned char *src, size_t n));/** Private data*/extern const Elf_Scn _elf_scn_init;extern const Scn_Data _elf_data_init;extern const size_t _elf_fmsize[2][EV_CURRENT - EV_NONE][ELF_T_NUM][2];/** Access macros for _elf_fmsize[]*/#define _fmsize(c,v,t,w) \(_elf_fmsize[(c)-ELFCLASS32][(v)-EV_NONE-1][(t)-ELF_T_BYTE][(w)])#define _fsize(c,v,t) _fmsize((c),(v),(t),1)#define _msize(c,v,t) _fmsize((c),(v),(t),0)/** Various checks*/#define valid_class(c) ((c) >= ELFCLASS32 && (c) <= ELFCLASS64)#define valid_encoding(e) ((e) >= ELFDATA2LSB && (e) <= ELFDATA2MSB)#define valid_version(v) ((v) > EV_NONE && (v) <= EV_CURRENT)#define valid_type(t) ((unsigned)(t) < ELF_T_NUM)/** Error codes*/enum {#define __err__(a,b) a,#include <errors.h> /* include constants from errors.h */#undef __err__ERROR_NUM};#define seterr(err) (_elf_errno = (err))/** Sizes of data types (external representation)* These definitions should be in <elf.h>, but...*/#ifndef ELF32_FSZ_ADDR# define ELF32_FSZ_ADDR 4# define ELF32_FSZ_HALF 2# define ELF32_FSZ_OFF 4# define ELF32_FSZ_SWORD 4# define ELF32_FSZ_WORD 4#endif /* ELF32_FSZ_ADDR */#ifndef ELF64_FSZ_ADDR# define ELF64_FSZ_ADDR 8# define ELF64_FSZ_HALF 2# define ELF64_FSZ_OFF 8# define ELF64_FSZ_SWORD 4# define ELF64_FSZ_SXWORD 8# define ELF64_FSZ_WORD 4# define ELF64_FSZ_XWORD 8#endif /* ELF64_FSZ_ADDR *//** More missing pieces, in no particular order*/#ifndef SHT_SYMTAB_SHNDX#define SHT_SYMTAB_SHNDX 18#endif /* SHT_SYMTAB_SHNDX */#ifndef SHN_XINDEX#define SHN_XINDEX 0xffff#endif /* SHN_XINDEX */#ifndef PN_XNUM#define PN_XNUM 0xffff#endif /* PN_XNUM *//** Debugging*/#if ENABLE_DEBUGextern void __elf_assert __P((const char*, unsigned, const char*));# if (__STDC__ + 0)# define elf_assert(x) do{if(!(x))__elf_assert(__FILE__,__LINE__,#x);}while(0)# else /* __STDC__ */# define elf_assert(x) do{if(!(x))__elf_assert(__FILE__,__LINE__,"x");}while(0)# endif /* __STDC__ */#else /* ENABLE_DEBUG */# define elf_assert(x) do{}while(0)#endif /* ENABLE_DEBUG *//** Return values for certain functions*/#define LIBELF_SUCCESS 1#define LIBELF_FAILURE 0#endif /* _PRIVATE_H */
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