1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/*
* 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 <config.h>
#include <grub/util/install.h>
#include <grub/emu/exec.h>
#include <grub/emu/misc.h>
#include <sys/types.h>
#include <dirent.h>
#include <string.h>
#include <sys/utsname.h>
static int
is_not_empty_directory (const char *dir)
{
DIR *d;
struct dirent *de;
d = opendir (dir);
if (!d)
return 0;
while ((de = readdir (d)))
{
if (strcmp (de->d_name, ".") == 0
|| strcmp (de->d_name, "..") == 0)
continue;
closedir (d);
return 1;
}
closedir (d);
return 0;
}
static int
is_64_kernel (void)
{
struct utsname un;
if (uname (&un) < 0)
return 0;
return strcmp (un.machine, "x86_64") == 0;
}
const char *
grub_install_get_default_x86_platform (void)
{
/*
On Linux, we need the efivars kernel modules.
If no EFI is available this module just does nothing
besides a small hello and if we detect efi we'll load it
anyway later. So it should be safe to
try to load it here.
*/
grub_util_exec_redirect_all ((const char * []){ "modprobe", "efivars", NULL },
NULL, NULL, "/dev/null");
grub_util_info ("Looking for /sys/firmware/efi ..");
if (is_not_empty_directory ("/sys/firmware/efi"))
{
grub_util_info ("...found");
if (is_64_kernel ())
return "x86_64-efi";
else
return "i386-efi";
}
grub_util_info ("... not found. Looking for /proc/device-tree ..");
if (is_not_empty_directory ("/proc/device-tree"))
{
grub_util_info ("...found");
return "i386-ieee1275";
}
grub_util_info ("... not found");
return "i386-pc";
}
|