1*b6cee71dSXin LI /* 2*b6cee71dSXin LI * Copyright (c) Christos Zoulas 2008. 3*b6cee71dSXin LI * All Rights Reserved. 4*b6cee71dSXin LI * 5*b6cee71dSXin LI * Redistribution and use in source and binary forms, with or without 6*b6cee71dSXin LI * modification, are permitted provided that the following conditions 7*b6cee71dSXin LI * are met: 8*b6cee71dSXin LI * 1. Redistributions of source code must retain the above copyright 9*b6cee71dSXin LI * notice immediately at the beginning of the file, without modification, 10*b6cee71dSXin LI * this list of conditions, and the following disclaimer. 11*b6cee71dSXin LI * 2. Redistributions in binary form must reproduce the above copyright 12*b6cee71dSXin LI * notice, this list of conditions and the following disclaimer in the 13*b6cee71dSXin LI * documentation and/or other materials provided with the distribution. 14*b6cee71dSXin LI * 15*b6cee71dSXin LI * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16*b6cee71dSXin LI * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17*b6cee71dSXin LI * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18*b6cee71dSXin LI * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 19*b6cee71dSXin LI * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20*b6cee71dSXin LI * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21*b6cee71dSXin LI * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22*b6cee71dSXin LI * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23*b6cee71dSXin LI * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24*b6cee71dSXin LI * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25*b6cee71dSXin LI * SUCH DAMAGE. 26*b6cee71dSXin LI */ 27*b6cee71dSXin LI if (nbytes <= sizeof(elfhdr)) 28*b6cee71dSXin LI return 0; 29*b6cee71dSXin LI 30*b6cee71dSXin LI u.l = 1; 31*b6cee71dSXin LI (void)memcpy(&elfhdr, buf, sizeof elfhdr); 32*b6cee71dSXin LI swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA]; 33*b6cee71dSXin LI 34*b6cee71dSXin LI type = elf_getu16(swap, elfhdr.e_type); 35*b6cee71dSXin LI switch (type) { 36*b6cee71dSXin LI #ifdef ELFCORE 37*b6cee71dSXin LI case ET_CORE: 38*b6cee71dSXin LI flags |= FLAGS_IS_CORE; 39*b6cee71dSXin LI if (dophn_core(ms, clazz, swap, fd, 40*b6cee71dSXin LI (off_t)elf_getu(swap, elfhdr.e_phoff), 41*b6cee71dSXin LI elf_getu16(swap, elfhdr.e_phnum), 42*b6cee71dSXin LI (size_t)elf_getu16(swap, elfhdr.e_phentsize), 43*b6cee71dSXin LI fsize, &flags) == -1) 44*b6cee71dSXin LI return -1; 45*b6cee71dSXin LI break; 46*b6cee71dSXin LI #endif 47*b6cee71dSXin LI case ET_EXEC: 48*b6cee71dSXin LI case ET_DYN: 49*b6cee71dSXin LI if (dophn_exec(ms, clazz, swap, fd, 50*b6cee71dSXin LI (off_t)elf_getu(swap, elfhdr.e_phoff), 51*b6cee71dSXin LI elf_getu16(swap, elfhdr.e_phnum), 52*b6cee71dSXin LI (size_t)elf_getu16(swap, elfhdr.e_phentsize), 53*b6cee71dSXin LI fsize, &flags, elf_getu16(swap, elfhdr.e_shnum)) 54*b6cee71dSXin LI == -1) 55*b6cee71dSXin LI return -1; 56*b6cee71dSXin LI /*FALLTHROUGH*/ 57*b6cee71dSXin LI case ET_REL: 58*b6cee71dSXin LI if (doshn(ms, clazz, swap, fd, 59*b6cee71dSXin LI (off_t)elf_getu(swap, elfhdr.e_shoff), 60*b6cee71dSXin LI elf_getu16(swap, elfhdr.e_shnum), 61*b6cee71dSXin LI (size_t)elf_getu16(swap, elfhdr.e_shentsize), 62*b6cee71dSXin LI fsize, &flags, elf_getu16(swap, elfhdr.e_machine), 63*b6cee71dSXin LI (int)elf_getu16(swap, elfhdr.e_shstrndx)) == -1) 64*b6cee71dSXin LI return -1; 65*b6cee71dSXin LI break; 66*b6cee71dSXin LI 67*b6cee71dSXin LI default: 68*b6cee71dSXin LI break; 69*b6cee71dSXin LI } 70*b6cee71dSXin LI return 1; 71