/* * GRUB -- GRand Unified Bootloader * Copyright (C) 2013 Free Software Foundation, Inc. * * GRUB is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * GRUB is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GRUB. If not, see <http://www.gnu.org/licenses/>. */ #include <grub/fileid.h> #include <grub/elfload.h> #pragma GCC diagnostic ignored "-Wcast-align" int grub_file_check_netbsdXX (grub_elf_t elf) { Elf_Shdr *s, *s0; grub_size_t shnum = elf->ehdr.ehdrXX.e_shnum; grub_size_t shentsize = elf->ehdr.ehdrXX.e_shentsize; grub_size_t shsize = shnum * shentsize; grub_off_t stroff; if (!shnum || !shentsize) return 0; s0 = grub_malloc (shsize); if (!s0) return 0; if (grub_file_seek (elf->file, elf->ehdr.ehdrXX.e_shoff) == (grub_off_t) -1) return 0; if (grub_file_read (elf->file, s0, shsize) != (grub_ssize_t) shsize) return 0; s = (Elf_Shdr *) ((char *) s0 + elf->ehdr.ehdrXX.e_shstrndx * shentsize); stroff = s->sh_offset; for (s = s0; s < (Elf_Shdr *) ((char *) s0 + shnum * shentsize); s = (Elf_Shdr *) ((char *) s + shentsize)) { char name[sizeof(".note.netbsd.ident")]; grub_memset (name, 0, sizeof (name)); if (grub_file_seek (elf->file, stroff + s->sh_name) == (grub_off_t) -1) return grub_errno; if (grub_file_read (elf->file, name, sizeof (name)) != (grub_ssize_t) sizeof (name)) { if (grub_errno) return grub_errno; continue; } if (grub_memcmp (name, ".note.netbsd.ident", sizeof(".note.netbsd.ident")) != 0) continue; return 1; } return 0; }