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/* libelf.h - public header file for libelf. Copyright (C) 1995 - 2003 Michael Riepe <michael@stud.uni-hannover.de> 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* @(#) $Id: libelf.h,v 1.14 2003/05/24 16:55:58 michael Exp $ */ #ifndef _LIBELF_H #define _LIBELF_H #include <sys/types.h> #if __LIBELF_INTERNAL__ #include <sys_elf.h> #else /* __LIBELF_INTERNAL__ */ #include <libelf/sys_elf.h> #endif /* __LIBELF_INTERNAL__ */ #ifdef __cplusplus extern "C" { #endif /* __cplusplus */ #ifndef __P # if __STDC__ || defined(__cplusplus) # define __P(args) args # else /* __STDC__ || defined(__cplusplus) */ # define __P(args) () # endif /* __STDC__ || defined(__cplusplus) */ #endif /* __P */ /* * Commands */ typedef enum { ELF_C_NULL = 0, /* must be first, 0 */ ELF_C_READ, ELF_C_WRITE, ELF_C_CLR, ELF_C_SET, ELF_C_FDDONE, ELF_C_FDREAD, ELF_C_RDWR, ELF_C_NUM /* must be last */ } Elf_Cmd; /* * Flags */ #define ELF_F_DIRTY 0x1 #define ELF_F_LAYOUT 0x4 /* * File types */ typedef enum { ELF_K_NONE = 0, /* must be first, 0 */ ELF_K_AR, ELF_K_COFF, ELF_K_ELF, ELF_K_NUM /* must be last */ } Elf_Kind; /* * Data types */ typedef enum { ELF_T_BYTE = 0, /* must be first, 0 */ ELF_T_ADDR, ELF_T_DYN, ELF_T_EHDR, ELF_T_HALF, ELF_T_OFF, ELF_T_PHDR, ELF_T_RELA, ELF_T_REL, ELF_T_SHDR, ELF_T_SWORD, ELF_T_SYM, ELF_T_WORD, /* * New stuff for 64-bit. * * Most implementations add ELF_T_SXWORD after ELF_T_SWORD * which breaks binary compatibility with earlier versions. * If this causes problems for you, contact me. */ ELF_T_SXWORD, ELF_T_XWORD, /* * Symbol versioning. Sun broke binary compatibility (again!), * but I won't. */ ELF_T_VDEF, ELF_T_VNEED, ELF_T_NUM /* must be last */ } Elf_Type; /* * Elf descriptor */ typedef struct Elf Elf; /* * Section descriptor */ typedef struct Elf_Scn Elf_Scn; /* * Archive member header */ typedef struct { char* ar_name; time_t ar_date; long ar_uid; long ar_gid; unsigned long ar_mode; off_t ar_size; char* ar_rawname; } Elf_Arhdr; /* * Archive symbol table */ typedef struct { char* as_name; size_t as_off; unsigned long as_hash; } Elf_Arsym; /* * Data descriptor */ typedef struct { void* d_buf; Elf_Type d_type; size_t d_size; off_t d_off; size_t d_align; unsigned d_version; } Elf_Data; /* * Function declarations */ extern Elf *elf_begin __P((int __fd, Elf_Cmd __cmd, Elf *__ref)); extern Elf *elf_memory __P((char *__image, size_t __size)); extern int elf_cntl __P((Elf *__elf, Elf_Cmd __cmd)); extern int elf_end __P((Elf *__elf)); extern const char *elf_errmsg __P((int __err)); extern int elf_errno __P((void)); extern void elf_fill __P((int __fill)); extern unsigned elf_flagdata __P((Elf_Data *__data, Elf_Cmd __cmd, unsigned __flags)); extern unsigned elf_flagehdr __P((Elf *__elf, Elf_Cmd __cmd, unsigned __flags)); extern unsigned elf_flagelf __P((Elf *__elf, Elf_Cmd __cmd, unsigned __flags)); extern unsigned elf_flagphdr __P((Elf *__elf, Elf_Cmd __cmd, unsigned __flags)); extern unsigned elf_flagscn __P((Elf_Scn *__scn, Elf_Cmd __cmd, unsigned __flags)); extern unsigned elf_flagshdr __P((Elf_Scn *__scn, Elf_Cmd __cmd, unsigned __flags)); extern size_t elf32_fsize __P((Elf_Type __type, size_t __count, unsigned __ver)); extern Elf_Arhdr *elf_getarhdr __P((Elf *__elf)); extern Elf_Arsym *elf_getarsym __P((Elf *__elf, size_t *__ptr)); extern off_t elf_getbase __P((Elf *__elf)); extern Elf_Data *elf_getdata __P((Elf_Scn *__scn, Elf_Data *__data)); extern Elf32_Ehdr *elf32_getehdr __P((Elf *__elf)); extern char *elf_getident __P((Elf *__elf, size_t *__ptr)); extern Elf32_Phdr *elf32_getphdr __P((Elf *__elf)); extern Elf_Scn *elf_getscn __P((Elf *__elf, size_t __index)); extern Elf32_Shdr *elf32_getshdr __P((Elf_Scn *__scn)); extern unsigned long elf_hash __P((const unsigned char *__name)); extern Elf_Kind elf_kind __P((Elf *__elf)); extern size_t elf_ndxscn __P((Elf_Scn *__scn)); extern Elf_Data *elf_newdata __P((Elf_Scn *__scn)); extern Elf32_Ehdr *elf32_newehdr __P((Elf *__elf)); extern Elf32_Phdr *elf32_newphdr __P((Elf *__elf, size_t __count)); extern Elf_Scn *elf_newscn __P((Elf *__elf)); extern Elf_Cmd elf_next __P((Elf *__elf)); extern Elf_Scn *elf_nextscn __P((Elf *__elf, Elf_Scn *__scn)); extern size_t elf_rand __P((Elf *__elf, size_t __offset)); extern Elf_Data *elf_rawdata __P((Elf_Scn *__scn, Elf_Data *__data)); extern char *elf_rawfile __P((Elf *__elf, size_t *__ptr)); extern char *elf_strptr __P((Elf *__elf, size_t __section, size_t __offset)); extern off_t elf_update __P((Elf *__elf, Elf_Cmd __cmd)); extern unsigned elf_version __P((unsigned __ver)); extern Elf_Data *elf32_xlatetof __P((Elf_Data *__dst, const Elf_Data *__src, unsigned __encode)); extern Elf_Data *elf32_xlatetom __P((Elf_Data *__dst, const Elf_Data *__src, unsigned __encode)); /* * Additional functions found on Solaris */ extern long elf32_checksum __P((Elf *__elf)); #if __LIBELF64 /* * 64-bit ELF functions * Not available on all platforms */ extern Elf64_Ehdr *elf64_getehdr __P((Elf *__elf)); extern Elf64_Ehdr *elf64_newehdr __P((Elf *__elf)); extern Elf64_Phdr *elf64_getphdr __P((Elf *__elf)); extern Elf64_Phdr *elf64_newphdr __P((Elf *__elf, size_t __count)); extern Elf64_Shdr *elf64_getshdr __P((Elf_Scn *__scn)); extern size_t elf64_fsize __P((Elf_Type __type, size_t __count, unsigned __ver)); extern Elf_Data *elf64_xlatetof __P((Elf_Data *__dst, const Elf_Data *__src, unsigned __encode)); extern Elf_Data *elf64_xlatetom __P((Elf_Data *__dst, const Elf_Data *__src, unsigned __encode)); /* * Additional functions found on Solaris */ extern long elf64_checksum __P((Elf *__elf)); #endif /* __LIBELF64 */ /* * Experimental extensions: * * elfx_movscn() moves section `__scn' directly after section `__after'. * elfx_remscn() removes section `__scn'. Both functions update * the section indices; elfx_remscn() also adjusts the ELF header's * e_shnum member. The application is responsible for updating other * data (in particular, e_shstrndx and the section headers' sh_link and * sh_info members). * * elfx_movscn() returns the new index of the moved section. * elfx_remscn() returns the original index of the removed section. * A return value of zero indicates an error. */ extern size_t elfx_movscn __P((Elf *__elf, Elf_Scn *__scn, Elf_Scn *__after)); extern size_t elfx_remscn __P((Elf *__elf, Elf_Scn *__scn)); /* * elf_delscn() is obsolete. Please use elfx_remscn() instead. */ extern size_t elf_delscn __P((Elf *__elf, Elf_Scn *__scn)); #ifdef __cplusplus } #endif /* __cplusplus */ #endif /* _LIBELF_H */