-
Notifications
You must be signed in to change notification settings - Fork 1
/
0040-grub2-btrfs-04-grub2-install.patch
175 lines (159 loc) · 5.24 KB
/
0040-grub2-btrfs-04-grub2-install.patch
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
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Michael Chang <[email protected]>
Date: Thu, 21 Aug 2014 03:39:11 +0000
Subject: [PATCH] grub2-btrfs-04-grub2-install
Signed-off-by: Michael Chang <[email protected]>
Signed-off-by: Robbie Harwood <[email protected]>
---
grub-core/osdep/linux/getroot.c | 7 +++++++
grub-core/osdep/unix/config.c | 17 +++++++++++++++--
util/config.c | 10 ++++++++++
util/grub-install.c | 14 ++++++++++++++
util/grub-mkrelpath.c | 6 ++++++
include/grub/emu/config.h | 1 +
6 files changed, 53 insertions(+), 2 deletions(-)
diff --git a/grub-core/osdep/linux/getroot.c b/grub-core/osdep/linux/getroot.c
index 7dd775d2ad9..7c29b3523b4 100644
--- a/grub-core/osdep/linux/getroot.c
+++ b/grub-core/osdep/linux/getroot.c
@@ -373,6 +373,7 @@ get_btrfs_fs_prefix (const char *mount_path)
return NULL;
}
+int use_relative_path_on_btrfs = 0;
char **
grub_find_root_devices_from_mountinfo (const char *dir, char **relroot)
@@ -516,6 +517,12 @@ again:
{
ret = grub_find_root_devices_from_btrfs (dir);
fs_prefix = get_btrfs_fs_prefix (entries[i].enc_path);
+ if (use_relative_path_on_btrfs)
+ {
+ if (fs_prefix)
+ free (fs_prefix);
+ fs_prefix = xstrdup ("/");
+ }
}
else if (!retry && grub_strcmp (entries[i].fstype, "autofs") == 0)
{
diff --git a/grub-core/osdep/unix/config.c b/grub-core/osdep/unix/config.c
index 0b1f7618d21..0ce0e309ac0 100644
--- a/grub-core/osdep/unix/config.c
+++ b/grub-core/osdep/unix/config.c
@@ -82,6 +82,19 @@ grub_util_load_config (struct grub_util_config *cfg)
if (v)
cfg->grub_distributor = xstrdup (v);
+ v = getenv ("SUSE_BTRFS_SNAPSHOT_BOOTING");
+ if (v)
+ {
+ if (grub_strncmp(v, "true", sizeof ("true") - 1) == 0)
+ {
+ cfg->is_suse_btrfs_snapshot_enabled = 1;
+ }
+ else
+ {
+ cfg->is_suse_btrfs_snapshot_enabled = 0;
+ }
+ }
+
cfgfile = grub_util_get_config_filename ();
if (!grub_util_is_regular (cfgfile))
return;
@@ -105,8 +118,8 @@ grub_util_load_config (struct grub_util_config *cfg)
*ptr++ = *iptr;
}
- strcpy (ptr, "'; printf \"GRUB_ENABLE_CRYPTODISK=%s\\nGRUB_DISTRIBUTOR=%s\\n\" "
- "\"$GRUB_ENABLE_CRYPTODISK\" \"$GRUB_DISTRIBUTOR\"");
+ strcpy (ptr, "'; printf \"GRUB_ENABLE_CRYPTODISK=%s\\nGRUB_DISTRIBUTOR=%s\\nSUSE_BTRFS_SNAPSHOT_BOOTING=%s\\n\" "
+ "\"$GRUB_ENABLE_CRYPTODISK\" \"$GRUB_DISTRIBUTOR\" \"$SUSE_BTRFS_SNAPSHOT_BOOTING\"");
argv[2] = script;
argv[3] = '\0';
diff --git a/util/config.c b/util/config.c
index ebcdd8f5e22..f044a880a76 100644
--- a/util/config.c
+++ b/util/config.c
@@ -42,6 +42,16 @@ grub_util_parse_config (FILE *f, struct grub_util_config *cfg, int simple)
cfg->is_cryptodisk_enabled = 1;
continue;
}
+ if (grub_strncmp (ptr, "SUSE_BTRFS_SNAPSHOT_BOOTING=",
+ sizeof ("SUSE_BTRFS_SNAPSHOT_BOOTING=") - 1) == 0)
+ {
+ ptr += sizeof ("SUSE_BTRFS_SNAPSHOT_BOOTING=") - 1;
+ if (*ptr == '"' || *ptr == '\'')
+ ptr++;
+ if (grub_strncmp(ptr, "true", sizeof ("true") - 1) == 0)
+ cfg->is_suse_btrfs_snapshot_enabled = 1;
+ continue;
+ }
if (grub_strncmp (ptr, "GRUB_DISTRIBUTOR=",
sizeof ("GRUB_DISTRIBUTOR=") - 1) == 0)
{
diff --git a/util/grub-install.c b/util/grub-install.c
index 7dc5657bb67..ec3ed49674b 100644
--- a/util/grub-install.c
+++ b/util/grub-install.c
@@ -843,6 +843,8 @@ try_open (const char *path)
}
#endif
+extern int use_relative_path_on_btrfs;
+
int
main (int argc, char *argv[])
{
@@ -876,6 +878,9 @@ main (int argc, char *argv[])
grub_util_load_config (&config);
+ if (config.is_suse_btrfs_snapshot_enabled)
+ use_relative_path_on_btrfs = 1;
+
if (!bootloader_id && config.grub_distributor)
{
char *ptr;
@@ -1366,6 +1371,15 @@ main (int argc, char *argv[])
relative_grubdir = xstrdup ("/");
}
+ if (config.is_suse_btrfs_snapshot_enabled
+ && grub_strncmp(grub_fs->name, "btrfs", sizeof ("btrfs") - 1) == 0)
+ {
+ if (!load_cfg_f)
+ load_cfg_f = grub_util_fopen (load_cfg, "wb");
+ have_load_cfg = 1;
+ fprintf (load_cfg_f, "set btrfs_relative_path='y'\n");
+ }
+
char *prefix_drive = NULL;
char *install_drive = NULL;
diff --git a/util/grub-mkrelpath.c b/util/grub-mkrelpath.c
index 47a241a391b..5db7a9a7d97 100644
--- a/util/grub-mkrelpath.c
+++ b/util/grub-mkrelpath.c
@@ -40,9 +40,12 @@ struct arguments
};
static struct argp_option options[] = {
+ {"relative", 'r', 0, 0, "use relative path on btrfs", 0},
{ 0, 0, 0, 0, 0, 0 }
};
+extern int use_relative_path_on_btrfs;
+
static error_t
argp_parser (int key, char *arg, struct argp_state *state)
{
@@ -52,6 +55,9 @@ argp_parser (int key, char *arg, struct argp_state *state)
switch (key)
{
+ case 'r':
+ use_relative_path_on_btrfs = 1;
+ break;
case ARGP_KEY_ARG:
if (state->arg_num == 0)
arguments->pathname = xstrdup (arg);
diff --git a/include/grub/emu/config.h b/include/grub/emu/config.h
index 875d5896ce1..c9a7e5f4ade 100644
--- a/include/grub/emu/config.h
+++ b/include/grub/emu/config.h
@@ -37,6 +37,7 @@ struct grub_util_config
{
int is_cryptodisk_enabled;
char *grub_distributor;
+ int is_suse_btrfs_snapshot_enabled;
};
void