| /*- | |
| * Copyright (c) 2006 Joseph Koshy | |
| * All rights reserved. | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions | |
| * are met: | |
| * 1. Redistributions of source code must retain the above copyright | |
| * notice, this list of conditions and the following disclaimer. | |
| * 2. Redistributions in binary form must reproduce the above copyright | |
| * notice, this list of conditions and the following disclaimer in the | |
| * documentation and/or other materials provided with the distribution. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| * SUCH DAMAGE. | |
| * | |
| * $FreeBSD: src/lib/libelf/_libelf.h,v 1.2 2006/12/25 02:22:22 jkoshy Exp $ | |
| */ | |
| #ifndef __LIBELF_H_ | |
| #define __LIBELF_H_ | |
| #include "elf_queue.h" | |
| #include "libelf.h" | |
| #ifndef NULL | |
| #define NULL ((void *) 0) | |
| #endif | |
| /* | |
| * Library-private data structures. | |
| */ | |
| #define LIBELF_MSG_SIZE 256 | |
| struct _libelf_globals { | |
| int libelf_arch; | |
| unsigned int libelf_byteorder; | |
| int libelf_class; | |
| int libelf_error; | |
| int libelf_fillchar; | |
| unsigned int libelf_version; | |
| char libelf_msg[LIBELF_MSG_SIZE]; | |
| }; | |
| struct _libelf_globals *_libelf_private(); | |
| #define LIBELF_PRIVATE(N) (_libelf_private()->libelf_##N) | |
| #define LIBELF_ELF_ERROR_MASK 0xFF | |
| #define LIBELF_OS_ERROR_SHIFT 8 | |
| #define LIBELF_SET_ERROR(E, O) do { \ | |
| LIBELF_PRIVATE(error) = ((ELF_E_##E & LIBELF_ELF_ERROR_MASK)| \ | |
| ((O) << LIBELF_OS_ERROR_SHIFT)); \ | |
| } while (0) | |
| #define LIBELF_ADJUST_AR_SIZE(S) (((S) + 1U) & ~1U) | |
| /* | |
| * Flags for library internal use. These use the upper 16 bits of a | |
| * flags field. | |
| */ | |
| #define LIBELF_F_MALLOCED 0x010000 /* whether data was malloc'ed */ | |
| #define LIBELF_F_MMAP 0x020000 /* whether e_rawfile was mmap'ed */ | |
| #define LIBELF_F_SHDRS_LOADED 0x040000 /* whether all shdrs were read in */ | |
| struct _Elf { | |
| int e_activations; /* activation count */ | |
| Elf_Arhdr *e_arhdr; /* header for archive members */ | |
| unsigned int e_byteorder; /* ELFDATA* */ | |
| int e_class; /* ELFCLASS* */ | |
| Elf_Cmd e_cmd; /* ELF_C_* used at creation time */ | |
| int e_fd; /* associated file descriptor */ | |
| unsigned int e_flags; /* ELF_F_*, LIBELF_F_* flags */ | |
| Elf_Kind e_kind; /* ELF_K_* */ | |
| Elf *e_parent; /* non-NULL for archive members */ | |
| char *e_rawfile; /* uninterpreted bytes */ | |
| size_t e_rawsize; /* size of uninterpreted bytes */ | |
| unsigned int e_version; /* file version */ | |
| union { | |
| struct { /* ar(1) archives */ | |
| off_t e_next; /* set by elf_rand()/elf_next() */ | |
| int e_nchildren; | |
| char *e_rawstrtab; /* file name strings */ | |
| size_t e_rawstrtabsz; | |
| char *e_rawsymtab; /* symbol table */ | |
| size_t e_rawsymtabsz; | |
| Elf_Arsym *e_symtab; | |
| size_t e_symtabsz; | |
| } e_ar; | |
| struct { /* regular ELF files */ | |
| union { | |
| Elf32_Ehdr *e_ehdr32; | |
| Elf64_Ehdr *e_ehdr64; | |
| } e_ehdr; | |
| union { | |
| Elf32_Phdr *e_phdr32; | |
| Elf64_Phdr *e_phdr64; | |
| } e_phdr; | |
| STAILQ_HEAD(, _Elf_Scn) e_scn; /* section list */ | |
| size_t e_nphdr; /* number of Phdr entries */ | |
| size_t e_nscn; /* number of sections */ | |
| size_t e_strndx; /* string table section index */ | |
| } e_elf; | |
| } e_u; | |
| }; | |
| struct _Elf_Scn { | |
| union { | |
| Elf32_Shdr s_shdr32; | |
| Elf64_Shdr s_shdr64; | |
| } s_shdr; | |
| STAILQ_HEAD(, _Elf_Data) s_data; /* list of Elf_Data descriptors */ | |
| STAILQ_HEAD(, _Elf_Data) s_rawdata; /* raw data for this section */ | |
| STAILQ_ENTRY(_Elf_Scn) s_next; | |
| struct _Elf *s_elf; /* parent ELF descriptor */ | |
| unsigned int s_flags; /* flags for the section as a whole */ | |
| size_t s_ndx; /* index# for this section */ | |
| uint64_t s_offset; /* managed by elf_update() */ | |
| uint64_t s_rawoff; /* original offset in the file */ | |
| uint64_t s_size; /* managed by elf_update() */ | |
| }; | |
| enum { | |
| ELF_TOFILE, | |
| ELF_TOMEMORY | |
| }; | |
| #define LIBELF_COPY_U32(DST,SRC,NAME) do { \ | |
| if ((SRC)->NAME > UINT_MAX) { \ | |
| LIBELF_SET_ERROR(RANGE, 0); \ | |
| return (0); \ | |
| } \ | |
| (DST)->NAME = (SRC)->NAME; \ | |
| } while (0) | |
| #define LIBELF_COPY_S32(DST,SRC,NAME) do { \ | |
| if ((SRC)->NAME > INT_MAX || \ | |
| (SRC)->NAME < INT_MIN) { \ | |
| LIBELF_SET_ERROR(RANGE, 0); \ | |
| return (0); \ | |
| } \ | |
| (DST)->NAME = (SRC)->NAME; \ | |
| } while (0) | |
| /* | |
| * Prototypes | |
| */ | |
| Elf_Data *_libelf_allocate_data(Elf_Scn *_s); | |
| Elf *_libelf_allocate_elf(void); | |
| Elf_Scn *_libelf_allocate_scn(Elf *_e, size_t _ndx); | |
| Elf_Arhdr *_libelf_ar_gethdr(Elf *_e); | |
| Elf *_libelf_ar_open(Elf *_e); | |
| Elf *_libelf_ar_open_member(int _fd, Elf_Cmd _c, Elf *_ar); | |
| Elf_Arsym *_libelf_ar_process_symtab(Elf *_ar, size_t *_dst); | |
| unsigned long _libelf_checksum(Elf *_e, int _elfclass); | |
| void *_libelf_ehdr(Elf *_e, int _elfclass, int _allocate); | |
| int _libelf_falign(Elf_Type _t, int _elfclass); | |
| size_t _libelf_fsize(Elf_Type _t, int _elfclass, unsigned int _version, | |
| size_t count); | |
| void (*_libelf_get_translator(Elf_Type _t, int _direction, int _elfclass)) | |
| (char *_dst, char *_src, size_t _cnt, int _byteswap); | |
| void *_libelf_getphdr(Elf *_e, int _elfclass); | |
| void *_libelf_getshdr(Elf_Scn *_scn, int _elfclass); | |
| void _libelf_init_elf(Elf *_e, Elf_Kind _kind); | |
| int _libelf_malign(Elf_Type _t, int _elfclass); | |
| size_t _libelf_msize(Elf_Type _t, int _elfclass, unsigned int _version); | |
| void *_libelf_newphdr(Elf *_e, int _elfclass, size_t _count); | |
| Elf_Data *_libelf_release_data(Elf_Data *_d); | |
| Elf *_libelf_release_elf(Elf *_e); | |
| Elf_Scn *_libelf_release_scn(Elf_Scn *_s); | |
| int _libelf_setphnum(Elf *_e, void *_eh, int _elfclass, size_t _phnum); | |
| int _libelf_setshnum(Elf *_e, void *_eh, int _elfclass, size_t _shnum); | |
| int _libelf_setshstrndx(Elf *_e, void *_eh, int _elfclass, | |
| size_t _shstrndx); | |
| Elf_Data *_libelf_xlate(Elf_Data *_d, const Elf_Data *_s, | |
| unsigned int _encoding, int _elfclass, int _direction); | |
| int _libelf_xlate_shtype(uint32_t _sht); | |
| #endif /* __LIBELF_H_ */ |