175 lines
5.2 KiB
Diff
175 lines
5.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Michael Chang <mchang@suse.com>
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Date: Thu, 21 Aug 2014 03:39:11 +0000
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Subject: [PATCH] grub2-btrfs-04-grub2-install
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---
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grub-core/osdep/linux/getroot.c | 7 +++++++
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grub-core/osdep/unix/config.c | 17 +++++++++++++++--
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util/config.c | 10 ++++++++++
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util/grub-install.c | 15 +++++++++++++++
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util/grub-mkrelpath.c | 6 ++++++
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include/grub/emu/config.h | 1 +
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6 files changed, 54 insertions(+), 2 deletions(-)
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diff --git a/grub-core/osdep/linux/getroot.c b/grub-core/osdep/linux/getroot.c
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index 6d9f4e5fa..5d50dd6f8 100644
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--- a/grub-core/osdep/linux/getroot.c
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+++ b/grub-core/osdep/linux/getroot.c
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@@ -376,6 +376,7 @@ get_btrfs_fs_prefix (const char *mount_path)
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return NULL;
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}
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+int use_relative_path_on_btrfs = 0;
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char **
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grub_find_root_devices_from_mountinfo (const char *dir, char **relroot)
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@@ -519,6 +520,12 @@ again:
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{
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ret = grub_find_root_devices_from_btrfs (dir);
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fs_prefix = get_btrfs_fs_prefix (entries[i].enc_path);
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+ if (use_relative_path_on_btrfs)
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+ {
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+ if (fs_prefix)
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+ free (fs_prefix);
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+ fs_prefix = xstrdup ("/");
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+ }
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}
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else if (!retry && grub_strcmp (entries[i].fstype, "autofs") == 0)
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{
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diff --git a/grub-core/osdep/unix/config.c b/grub-core/osdep/unix/config.c
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index 65effa9f3..b637c58ef 100644
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--- a/grub-core/osdep/unix/config.c
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+++ b/grub-core/osdep/unix/config.c
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@@ -82,6 +82,19 @@ grub_util_load_config (struct grub_util_config *cfg)
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if (v)
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cfg->grub_distributor = xstrdup (v);
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+ v = getenv ("SUSE_BTRFS_SNAPSHOT_BOOTING");
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+ if (v)
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+ {
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+ if (grub_strncmp(v, "true", sizeof ("true") - 1) == 0)
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+ {
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+ cfg->is_suse_btrfs_snapshot_enabled = 1;
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+ }
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+ else
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+ {
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+ cfg->is_suse_btrfs_snapshot_enabled = 0;
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+ }
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+ }
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+
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cfgfile = grub_util_get_config_filename ();
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if (!grub_util_is_regular (cfgfile))
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return;
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@@ -105,8 +118,8 @@ grub_util_load_config (struct grub_util_config *cfg)
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*ptr++ = *iptr;
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}
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- strcpy (ptr, "'; printf \"GRUB_ENABLE_CRYPTODISK=%s\\nGRUB_DISTRIBUTOR=%s\\n\" "
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- "\"$GRUB_ENABLE_CRYPTODISK\" \"$GRUB_DISTRIBUTOR\"");
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+ strcpy (ptr, "'; printf \"GRUB_ENABLE_CRYPTODISK=%s\\nGRUB_DISTRIBUTOR=%s\\nSUSE_BTRFS_SNAPSHOT_BOOTING=%s\\n\" "
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+ "\"$GRUB_ENABLE_CRYPTODISK\" \"$GRUB_DISTRIBUTOR\" \"$SUSE_BTRFS_SNAPSHOT_BOOTING\"");
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argv[2] = script;
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argv[3] = '\0';
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diff --git a/util/config.c b/util/config.c
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index ebcdd8f5e..f044a880a 100644
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--- a/util/config.c
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+++ b/util/config.c
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@@ -42,6 +42,16 @@ grub_util_parse_config (FILE *f, struct grub_util_config *cfg, int simple)
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cfg->is_cryptodisk_enabled = 1;
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continue;
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}
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+ if (grub_strncmp (ptr, "SUSE_BTRFS_SNAPSHOT_BOOTING=",
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+ sizeof ("SUSE_BTRFS_SNAPSHOT_BOOTING=") - 1) == 0)
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+ {
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+ ptr += sizeof ("SUSE_BTRFS_SNAPSHOT_BOOTING=") - 1;
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+ if (*ptr == '"' || *ptr == '\'')
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+ ptr++;
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+ if (grub_strncmp(ptr, "true", sizeof ("true") - 1) == 0)
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+ cfg->is_suse_btrfs_snapshot_enabled = 1;
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+ continue;
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+ }
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if (grub_strncmp (ptr, "GRUB_DISTRIBUTOR=",
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sizeof ("GRUB_DISTRIBUTOR=") - 1) == 0)
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{
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diff --git a/util/grub-install.c b/util/grub-install.c
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index 78d0138cb..4375c1619 100644
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--- a/util/grub-install.c
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+++ b/util/grub-install.c
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@@ -816,6 +816,8 @@ fill_core_services (const char *core_services)
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free (sysv_plist);
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}
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+extern int use_relative_path_on_btrfs;
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+
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int
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main (int argc, char *argv[])
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{
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@@ -849,6 +851,9 @@ main (int argc, char *argv[])
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grub_util_load_config (&config);
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+ if (config.is_suse_btrfs_snapshot_enabled)
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+ use_relative_path_on_btrfs = 1;
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+
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if (!bootloader_id && config.grub_distributor)
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{
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char *ptr;
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@@ -1321,6 +1326,16 @@ main (int argc, char *argv[])
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fprintf (load_cfg_f, "set debug='%s'\n",
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debug_image);
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}
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+
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+ if (config.is_suse_btrfs_snapshot_enabled
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+ && grub_strncmp(grub_fs->name, "btrfs", sizeof ("btrfs") - 1) == 0)
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+ {
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+ if (!load_cfg_f)
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+ load_cfg_f = grub_util_fopen (load_cfg, "wb");
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+ have_load_cfg = 1;
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+ fprintf (load_cfg_f, "set btrfs_relative_path='y'\n");
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+ }
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+
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char *prefix_drive = NULL;
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char *install_drive = NULL;
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diff --git a/util/grub-mkrelpath.c b/util/grub-mkrelpath.c
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index 47a241a39..5db7a9a7d 100644
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--- a/util/grub-mkrelpath.c
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+++ b/util/grub-mkrelpath.c
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@@ -40,9 +40,12 @@ struct arguments
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};
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static struct argp_option options[] = {
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+ {"relative", 'r', 0, 0, "use relative path on btrfs", 0},
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{ 0, 0, 0, 0, 0, 0 }
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};
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+extern int use_relative_path_on_btrfs;
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+
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static error_t
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argp_parser (int key, char *arg, struct argp_state *state)
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{
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@@ -52,6 +55,9 @@ argp_parser (int key, char *arg, struct argp_state *state)
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switch (key)
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{
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+ case 'r':
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+ use_relative_path_on_btrfs = 1;
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+ break;
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case ARGP_KEY_ARG:
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if (state->arg_num == 0)
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arguments->pathname = xstrdup (arg);
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diff --git a/include/grub/emu/config.h b/include/grub/emu/config.h
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index 875d5896c..c9a7e5f4a 100644
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--- a/include/grub/emu/config.h
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+++ b/include/grub/emu/config.h
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@@ -37,6 +37,7 @@ struct grub_util_config
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{
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int is_cryptodisk_enabled;
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char *grub_distributor;
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+ int is_suse_btrfs_snapshot_enabled;
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};
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void
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