text: /*
   * Copyright (c) Christos Zoulas 2008.
   * 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 immediately at the beginning of the file, without modification,
   *    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 (nbytes <= sizeof(elfhdr))
  		return 0;
  
  	u.l = 1;
  	(void)memcpy(&elfhdr, buf, sizeof elfhdr);
  	swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA];
  
  	type = elf_getu16(swap, elfhdr.e_type);
  	notecount = ms->elf_notes_max;
  	switch (type) {
  #ifdef ELFCORE
  	case ET_CORE:
  		phnum = elf_getu16(swap, elfhdr.e_phnum);
  		if (phnum > ms->elf_phnum_max)
  			return toomany(ms, "program headers", phnum);
  		flags |= FLAGS_IS_CORE;
  		if (dophn_core(ms, clazz, swap, fd,
  		    CAST(off_t, elf_getu(swap, elfhdr.e_phoff)), phnum,
  		    CAST(size_t, elf_getu16(swap, elfhdr.e_phentsize)),
  		    fsize, &flags, &notecount) == -1)
  			return -1;
  		break;
  #endif
  	case ET_EXEC:
  	case ET_DYN:
  		phnum = elf_getu16(swap, elfhdr.e_phnum);
  		if (phnum > ms->elf_phnum_max)
  			return toomany(ms, "program", phnum);
  		shnum = elf_getu16(swap, elfhdr.e_shnum);
  		if (shnum > ms->elf_shnum_max)
  			return toomany(ms, "section", shnum);
  		if (dophn_exec(ms, clazz, swap, fd,
  		    CAST(off_t, elf_getu(swap, elfhdr.e_phoff)), phnum,
  		    CAST(size_t, elf_getu16(swap, elfhdr.e_phentsize)),
  		    fsize, shnum, &flags, &notecount) == -1)
  			return -1;
  		/*FALLTHROUGH*/
  	case ET_REL:
  		shnum = elf_getu16(swap, elfhdr.e_shnum);
  		if (shnum > ms->elf_shnum_max)
  			return toomany(ms, "section headers", shnum);
  		if (doshn(ms, clazz, swap, fd,
  		    CAST(off_t, elf_getu(swap, elfhdr.e_shoff)), shnum,
  		    CAST(size_t, elf_getu16(swap, elfhdr.e_shentsize)),
  		    fsize, elf_getu16(swap, elfhdr.e_machine),
  		    CAST(int, elf_getu16(swap, elfhdr.e_shstrndx)),
  		    &flags, &notecount) == -1)
  			return -1;
  		break;
  
  	default:
  		break;
  	}
  	if (notecount == 0)
  		return toomany(ms, "notes", ms->elf_notes_max);
  	return 1;
  