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