69 lines
2 KiB
C
69 lines
2 KiB
C
|
/*
|
||
|
|
* 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>
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|