/* $NetBSD: gelf_ehdr.c,v 1.4 2010/02/22 10:48:32 darran Exp $ */ /*- * 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. */ #if HAVE_NBTOOL_CONFIG_H # include "nbtool_config.h" #endif #include /* __FBSDID("$FreeBSD: src/lib/libelf/gelf_ehdr.c,v 1.1.10.1.2.1 2009/10/25 01:10:29 kensmith Exp $"); */ #include #include #include #include #include #include "_libelf.h" Elf32_Ehdr * elf32_getehdr(Elf *e) { return (_libelf_ehdr(e, ELFCLASS32, 0)); } Elf64_Ehdr * elf64_getehdr(Elf *e) { return (_libelf_ehdr(e, ELFCLASS64, 0)); } GElf_Ehdr * gelf_getehdr(Elf *e, GElf_Ehdr *d) { int ec; Elf32_Ehdr *eh32; Elf64_Ehdr *eh64; if (d == NULL || e == NULL || ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) { LIBELF_SET_ERROR(ARGUMENT, 0); return (NULL); } if (ec == ELFCLASS32) { if ((eh32 = _libelf_ehdr(e, ELFCLASS32, 0)) == NULL) return (NULL); (void) memcpy(d->e_ident, eh32->e_ident, sizeof(eh32->e_ident)); d->e_type = eh32->e_type; d->e_machine = eh32->e_machine; d->e_version = eh32->e_version; d->e_entry = eh32->e_entry; d->e_phoff = eh32->e_phoff; d->e_shoff = eh32->e_shoff; d->e_flags = eh32->e_flags; d->e_ehsize = eh32->e_ehsize; d->e_phentsize = eh32->e_phentsize; d->e_phnum = eh32->e_phnum; d->e_shentsize = eh32->e_shentsize; d->e_shnum = eh32->e_shnum; d->e_shstrndx = eh32->e_shstrndx; return (d); } assert(ec == ELFCLASS64); if ((eh64 = _libelf_ehdr(e, ELFCLASS64, 0)) == NULL) return (NULL); *d = *eh64; return (d); } Elf32_Ehdr * elf32_newehdr(Elf *e) { return (_libelf_ehdr(e, ELFCLASS32, 1)); } Elf64_Ehdr * elf64_newehdr(Elf *e) { return (_libelf_ehdr(e, ELFCLASS64, 1)); } void * gelf_newehdr(Elf *e, int ec) { if (e != NULL && (ec == ELFCLASS32 || ec == ELFCLASS64)) return (_libelf_ehdr(e, ec, 1)); LIBELF_SET_ERROR(ARGUMENT, 0); return (NULL); } int gelf_update_ehdr(Elf *e, GElf_Ehdr *s) { int ec; void *ehdr; Elf32_Ehdr *eh32; Elf64_Ehdr *eh64; if (s== NULL || e == NULL || e->e_kind != ELF_K_ELF || ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if (e->e_cmd == ELF_C_READ) { LIBELF_SET_ERROR(MODE, 0); return (0); } if ((ehdr = _libelf_ehdr(e, ec, 0)) == NULL) return (0); if (ec == ELFCLASS64) { eh64 = (Elf64_Ehdr *) ehdr; *eh64 = *s; return (1); } eh32 = (Elf32_Ehdr *) ehdr; (void) memcpy(eh32->e_ident, s->e_ident, sizeof(eh32->e_ident)); eh32->e_type = s->e_type; eh32->e_machine = s->e_machine; eh32->e_version = s->e_version; LIBELF_COPY_U32(eh32, s, e_entry); LIBELF_COPY_U32(eh32, s, e_phoff); LIBELF_COPY_U32(eh32, s, e_shoff); eh32->e_flags = s->e_flags; eh32->e_ehsize = s->e_ehsize; eh32->e_phentsize = s->e_phentsize; eh32->e_phnum = s->e_phnum; eh32->e_shentsize = s->e_shentsize; eh32->e_shnum = s->e_shnum; eh32->e_shstrndx = s->e_shstrndx; (void) elf_flagehdr(e, ELF_C_SET, ELF_F_DIRTY); return (1); }