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-rw-r--r--package/grub2/patches/100-grub_setup_root.patch77
1 files changed, 77 insertions, 0 deletions
diff --git a/package/grub2/patches/100-grub_setup_root.patch b/package/grub2/patches/100-grub_setup_root.patch
new file mode 100644
index 0000000000..7775b2a22e
--- /dev/null
+++ b/package/grub2/patches/100-grub_setup_root.patch
@@ -0,0 +1,77 @@
+--- a/util/grub-setup.c
++++ b/util/grub-setup.c
+@@ -141,12 +141,11 @@ write_rootdev (char *core_img, grub_devi
+ static void
+ setup (const char *dir,
+ const char *boot_file, const char *core_file,
+- const char *dest, int force,
++ const char *root, const char *dest, int force,
+ int fs_probe, int allow_floppy)
+ {
+ char *boot_path, *core_path, *core_path_dev, *core_path_dev_full;
+ char *boot_img, *core_img;
+- char *root = 0;
+ size_t boot_size, core_size;
+ grub_uint16_t core_sectors;
+ grub_device_t root_dev = 0, dest_dev, core_dev;
+@@ -253,7 +252,10 @@ setup (const char *dir,
+
+ core_dev = dest_dev;
+
+- {
++ if (root)
++ root_dev = grub_device_open(root);
++
++ if (!root_dev) {
+ char **root_devices = grub_guess_root_devices (dir);
+ char **cur;
+ int found = 0;
+@@ -263,6 +265,8 @@ setup (const char *dir,
+ char *drive;
+ grub_device_t try_dev;
+
++ if (root_dev)
++ break;
+ drive = grub_util_get_grub_dev (*cur);
+ if (!drive)
+ continue;
+@@ -956,6 +960,8 @@ static struct argp_option options[] = {
+ N_("install even if problems are detected"), 0},
+ {"skip-fs-probe",'s',0, 0,
+ N_("do not probe for filesystems in DEVICE"), 0},
++ {"root-device", 'r', N_("DEVICE"), 0,
++ N_("use DEVICE as the root device"), 0},
+ {"verbose", 'v', 0, 0, N_("print verbose messages."), 0},
+ {"allow-floppy", 'a', 0, 0,
+ /* TRANSLATORS: The potential breakage isn't limited to floppies but it's
+@@ -993,6 +999,7 @@ struct arguments
+ char *core_file;
+ char *dir;
+ char *dev_map;
++ char *root_dev;
+ int force;
+ int fs_probe;
+ int allow_floppy;
+@@ -1040,6 +1047,13 @@ argp_parser (int key, char *arg, struct
+ arguments->dev_map = xstrdup (arg);
+ break;
+
++ case 'r':
++ if (arguments->root_dev)
++ free (arguments->root_dev);
++
++ arguments->root_dev = xstrdup (arg);
++ break;
++
+ case 'f':
+ arguments->force = 1;
+ break;
+@@ -1172,7 +1186,7 @@ main (int argc, char *argv[])
+ setup (arguments.dir ? : DEFAULT_DIRECTORY,
+ arguments.boot_file ? : DEFAULT_BOOT_FILE,
+ arguments.core_file ? : DEFAULT_CORE_FILE,
+- dest_dev, arguments.force,
++ arguments.root_dev, dest_dev, arguments.force,
+ arguments.fs_probe, arguments.allow_floppy);
+
+ /* Free resources. */