/*- * Copyright (c) 2006,2008 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. */ #include #include #include #include #include #include "_libelf.h" ELFTC_VCSID("$Id: gelf_shdr.c,v 1.1 2019/02/01 05:27:38 jsg Exp $"); Elf32_Shdr * elf32_getshdr(Elf_Scn *s) { return (_libelf_getshdr(s, ELFCLASS32)); } Elf64_Shdr * elf64_getshdr(Elf_Scn *s) { return (_libelf_getshdr(s, ELFCLASS64)); } GElf_Shdr * gelf_getshdr(Elf_Scn *s, GElf_Shdr *d) { int ec; void *sh; Elf32_Shdr *sh32; Elf64_Shdr *sh64; if (d == NULL) { LIBELF_SET_ERROR(ARGUMENT, 0); return (NULL); } if ((sh = _libelf_getshdr(s, ELFCLASSNONE)) == NULL) return (NULL); ec = s->s_elf->e_class; assert(ec == ELFCLASS32 || ec == ELFCLASS64); if (ec == ELFCLASS32) { sh32 = (Elf32_Shdr *) sh; d->sh_name = sh32->sh_name; d->sh_type = sh32->sh_type; d->sh_flags = (Elf64_Xword) sh32->sh_flags; d->sh_addr = (Elf64_Addr) sh32->sh_addr; d->sh_offset = (Elf64_Off) sh32->sh_offset; d->sh_size = (Elf64_Xword) sh32->sh_size; d->sh_link = sh32->sh_link; d->sh_info = sh32->sh_info; d->sh_addralign = (Elf64_Xword) sh32->sh_addralign; d->sh_entsize = (Elf64_Xword) sh32->sh_entsize; } else { sh64 = (Elf64_Shdr *) sh; *d = *sh64; } return (d); } int gelf_update_shdr(Elf_Scn *scn, GElf_Shdr *s) { int ec; Elf *e; Elf32_Shdr *sh32; if (s == NULL || scn == NULL || (e = scn->s_elf) == 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); } (void) elf_flagscn(scn, ELF_C_SET, ELF_F_DIRTY); if (ec == ELFCLASS64) { scn->s_shdr.s_shdr64 = *s; return (1); } sh32 = &scn->s_shdr.s_shdr32; sh32->sh_name = s->sh_name; sh32->sh_type = s->sh_type; LIBELF_COPY_U32(sh32, s, sh_flags); LIBELF_COPY_U32(sh32, s, sh_addr); LIBELF_COPY_U32(sh32, s, sh_offset); LIBELF_COPY_U32(sh32, s, sh_size); sh32->sh_link = s->sh_link; sh32->sh_info = s->sh_info; LIBELF_COPY_U32(sh32, s, sh_addralign); LIBELF_COPY_U32(sh32, s, sh_entsize); return (1); }