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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
Without this patch, GRUB may proceed to wipe all firmware boot entries
and report a successful installation, even if efibootmgr hit an error.
Origin URL:
https://git.sv.gnu.org/cgit/grub.git/commit/?id=6400613ad0b463abc93362086a491cd2a5e99b0d
From 6400613ad0b463abc93362086a491cd2a5e99b0d Mon Sep 17 00:00:00 2001
From: Steve McIntyre <steve@einval.com>
Date: Wed, 31 Jan 2018 21:49:36 +0000
Subject: Make grub-install check for errors from efibootmgr
Code is currently ignoring errors from efibootmgr, giving users
clearly bogus output like:
Setting up grub-efi-amd64 (2.02~beta3-4) ...
Installing for x86_64-efi platform.
Could not delete variable: No space left on device
Could not prepare Boot variable: No space left on device
Installation finished. No error reported.
and then potentially unbootable systems. If efibootmgr fails, grub-install
should know that and report it!
We've been using similar patch in Debian now for some time, with no ill effects.
diff --git a/grub-core/osdep/unix/platform.c b/grub-core/osdep/unix/platform.c
index a3fcfca..ca448bc 100644
--- a/grub-core/osdep/unix/platform.c
+++ b/grub-core/osdep/unix/platform.c
@@ -78,19 +78,20 @@ get_ofpathname (const char *dev)
dev);
}
-static void
+static int
grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
{
int fd;
pid_t pid = grub_util_exec_pipe ((const char * []){ "efibootmgr", NULL }, &fd);
char *line = NULL;
size_t len = 0;
+ int rc;
if (!pid)
{
grub_util_warn (_("Unable to open stream from %s: %s"),
"efibootmgr", strerror (errno));
- return;
+ return errno;
}
FILE *fp = fdopen (fd, "r");
@@ -98,7 +99,7 @@ grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
{
grub_util_warn (_("Unable to open stream from %s: %s"),
"efibootmgr", strerror (errno));
- return;
+ return errno;
}
line = xmalloc (80);
@@ -119,23 +120,25 @@ grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
bootnum = line + sizeof ("Boot") - 1;
bootnum[4] = '\0';
if (!verbosity)
- grub_util_exec ((const char * []){ "efibootmgr", "-q",
+ rc = grub_util_exec ((const char * []){ "efibootmgr", "-q",
"-b", bootnum, "-B", NULL });
else
- grub_util_exec ((const char * []){ "efibootmgr",
+ rc = grub_util_exec ((const char * []){ "efibootmgr",
"-b", bootnum, "-B", NULL });
}
free (line);
+ return rc;
}
-void
+int
grub_install_register_efi (grub_device_t efidir_grub_dev,
const char *efifile_path,
const char *efi_distributor)
{
const char * efidir_disk;
int efidir_part;
+ int ret;
efidir_disk = grub_util_biosdisk_get_osdev (efidir_grub_dev->disk);
efidir_part = efidir_grub_dev->disk->partition ? efidir_grub_dev->disk->partition->number + 1 : 1;
@@ -151,23 +154,26 @@ grub_install_register_efi (grub_device_t efidir_grub_dev,
grub_util_exec ((const char * []){ "modprobe", "-q", "efivars", NULL });
#endif
/* Delete old entries from the same distributor. */
- grub_install_remove_efi_entries_by_distributor (efi_distributor);
+ ret = grub_install_remove_efi_entries_by_distributor (efi_distributor);
+ if (ret)
+ return ret;
char *efidir_part_str = xasprintf ("%d", efidir_part);
if (!verbosity)
- grub_util_exec ((const char * []){ "efibootmgr", "-q",
+ ret = grub_util_exec ((const char * []){ "efibootmgr", "-q",
"-c", "-d", efidir_disk,
"-p", efidir_part_str, "-w",
"-L", efi_distributor, "-l",
efifile_path, NULL });
else
- grub_util_exec ((const char * []){ "efibootmgr",
+ ret = grub_util_exec ((const char * []){ "efibootmgr",
"-c", "-d", efidir_disk,
"-p", efidir_part_str, "-w",
"-L", efi_distributor, "-l",
efifile_path, NULL });
free (efidir_part_str);
+ return ret;
}
void
diff --git a/include/grub/util/install.h b/include/grub/util/install.h
index 5910b0c..0dba8b6 100644
--- a/include/grub/util/install.h
+++ b/include/grub/util/install.h
@@ -210,7 +210,7 @@ grub_install_create_envblk_file (const char *name);
const char *
grub_install_get_default_x86_platform (void);
-void
+int
grub_install_register_efi (grub_device_t efidir_grub_dev,
const char *efifile_path,
const char *efi_distributor);
diff --git a/util/grub-install.c b/util/grub-install.c
index 5e4cdfd..690f180 100644
--- a/util/grub-install.c
+++ b/util/grub-install.c
@@ -1848,9 +1848,13 @@ main (int argc, char *argv[])
if (!removable && update_nvram)
{
/* Try to make this image bootable using the EFI Boot Manager, if available. */
- grub_install_register_efi (efidir_grub_dev,
- "\\System\\Library\\CoreServices",
- efi_distributor);
+ int ret;
+ ret = grub_install_register_efi (efidir_grub_dev,
+ "\\System\\Library\\CoreServices",
+ efi_distributor);
+ if (ret)
+ grub_util_error (_("efibootmgr failed to register the boot entry: %s"),
+ strerror (ret));
}
grub_device_close (ins_dev);
@@ -1871,6 +1875,7 @@ main (int argc, char *argv[])
{
char * efifile_path;
char * part;
+ int ret;
/* Try to make this image bootable using the EFI Boot Manager, if available. */
if (!efi_distributor || efi_distributor[0] == '\0')
@@ -1887,7 +1892,10 @@ main (int argc, char *argv[])
efidir_grub_dev->disk->name,
(part ? ",": ""), (part ? : ""));
grub_free (part);
- grub_install_register_efi (efidir_grub_dev,
- efifile_path, efi_distributor);
+ ret = grub_install_register_efi (efidir_grub_dev,
+ efifile_path, efi_distributor);
+ if (ret)
+ grub_util_error (_("efibootmgr failed to register the boot entry: %s"),
+ strerror (ret));
}
break;
Below is a followup to the patch above: the uninitialized variable could lead
‘grub-install’ to error out when it shouldn’t (seen on an AArch64 box where
‘grub_install_remove_efi_entries_by_distributor’ didn't have any entry to
remove):
grub-install: error: efibootmgr failed to register the boot entry: Unknown error 65535.
See <http://lists.gnu.org/archive/html/bug-grub/2018-10/msg00006.html>.
--- grub-2.02/grub-core/osdep/unix/platform.c 2018-10-17 22:21:53.015284846 +0200
+++ grub-2.02/grub-core/osdep/unix/platform.c 2018-10-17 22:21:55.595271222 +0200
@@ -85,7 +85,7 @@ grub_install_remove_efi_entries_by_distr
pid_t pid = grub_util_exec_pipe ((const char * []){ "efibootmgr", NULL }, &fd);
char *line = NULL;
size_t len = 0;
- int rc;
+ int rc = 0;
if (!pid)
{
|
