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grub2/debian/patches/install-signed.patch
Steve McIntyre 36f78fd054 grub-install: Don't use our grub CD EFI image for --removable 
Closes: #1026915. Thanks to Pascal Hambourg for the patch.
2023-01-15 23:52:26 +00:00

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From 0bd31f4c7468f0b42ff6673f47112b9167c6381c Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@ubuntu.com>
Date: Mon, 13 Jan 2014 12:13:22 +0000
Subject: Install signed images if UEFI Secure Boot is enabled
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Author: Stéphane Graber <stgraber@ubuntu.com>
Author: Steve Langasek <steve.langasek@ubuntu.com>
Author: Linn Crosetto <linn@hpe.com>
Author: Mathieu Trudel-Lapierre <cyphermox@ubuntu.com>
Forwarded: no
Last-Update: 2023-01-15
Patch-Name: install-signed.patch
---
util/grub-install.c | 212 ++++++++++++++++++++++++++++++++------------
1 file changed, 153 insertions(+), 59 deletions(-)
Index: grub.git/util/grub-install.c
===================================================================
--- grub.git.orig/util/grub-install.c
+++ grub.git/util/grub-install.c
@@ -79,6 +79,7 @@ static char *label_color;
static char *label_bgcolor;
static char *product_version;
static int add_rs_codes = 1;
+static int uefi_secure_boot = 1;
enum
{
@@ -109,7 +110,9 @@ enum
OPTION_LABEL_FONT,
OPTION_LABEL_COLOR,
OPTION_LABEL_BGCOLOR,
- OPTION_PRODUCT_VERSION
+ OPTION_PRODUCT_VERSION,
+ OPTION_UEFI_SECURE_BOOT,
+ OPTION_NO_UEFI_SECURE_BOOT
};
static int fs_probe = 1;
@@ -233,6 +236,14 @@ argp_parser (int key, char *arg, struct
bootloader_id = xstrdup (arg);
return 0;
+ case OPTION_UEFI_SECURE_BOOT:
+ uefi_secure_boot = 1;
+ return 0;
+
+ case OPTION_NO_UEFI_SECURE_BOOT:
+ uefi_secure_boot = 0;
+ return 0;
+
case ARGP_KEY_ARG:
if (install_device)
grub_util_error ("%s", _("More than one install device?"));
@@ -302,6 +313,14 @@ static struct argp_option options[] = {
{"label-color", OPTION_LABEL_COLOR, N_("COLOR"), 0, N_("use COLOR for label"), 2},
{"label-bgcolor", OPTION_LABEL_BGCOLOR, N_("COLOR"), 0, N_("use COLOR for label background"), 2},
{"product-version", OPTION_PRODUCT_VERSION, N_("STRING"), 0, N_("use STRING as product version"), 2},
+ {"uefi-secure-boot", OPTION_UEFI_SECURE_BOOT, 0, 0,
+ N_("install an image usable with UEFI Secure Boot. "
+ "This option is only available on EFI and if the grub-efi-amd64-signed "
+ "package is installed."), 2},
+ {"no-uefi-secure-boot", OPTION_NO_UEFI_SECURE_BOOT, 0, 0,
+ N_("do not install an image usable with UEFI Secure Boot, even if the "
+ "system was currently started using it. "
+ "This option is only available on EFI."), 2},
{0, 0, 0, 0, 0, 0}
};
@@ -832,7 +851,8 @@ main (int argc, char *argv[])
{
int is_efi = 0;
const char *efi_distributor = NULL;
- const char *efi_file = NULL;
+ const char *efi_suffix = NULL, *efi_suffix_upper = NULL;
+ char *efi_file = NULL;
char **grub_devices;
grub_fs_t grub_fs;
grub_device_t grub_dev = NULL;
@@ -1102,6 +1122,39 @@ main (int argc, char *argv[])
*/
char *t;
efi_distributor = bootloader_id;
+ switch (platform)
+ {
+ case GRUB_INSTALL_PLATFORM_I386_EFI:
+ efi_suffix = "ia32";
+ efi_suffix_upper = "IA32";
+ break;
+ case GRUB_INSTALL_PLATFORM_X86_64_EFI:
+ efi_suffix = "x64";
+ efi_suffix_upper = "X64";
+ break;
+ case GRUB_INSTALL_PLATFORM_IA64_EFI:
+ efi_suffix = "ia64";
+ efi_suffix_upper = "IA64";
+ break;
+ case GRUB_INSTALL_PLATFORM_ARM_EFI:
+ efi_suffix = "arm";
+ efi_suffix_upper = "ARM";
+ break;
+ case GRUB_INSTALL_PLATFORM_ARM64_EFI:
+ efi_suffix = "aa64";
+ efi_suffix_upper = "AA64";
+ break;
+ case GRUB_INSTALL_PLATFORM_RISCV32_EFI:
+ efi_suffix = "riscv32";
+ efi_suffix_upper = "RISCV32";
+ break;
+ case GRUB_INSTALL_PLATFORM_RISCV64_EFI:
+ efi_suffix = "riscv64";
+ efi_suffix_upper = "RISCV64";
+ break;
+ default:
+ break;
+ }
if (removable)
{
/* The specification makes stricter requirements of removable
@@ -1110,66 +1163,16 @@ main (int argc, char *argv[])
must have a specific file name depending on the architecture.
*/
efi_distributor = "BOOT";
- switch (platform)
- {
- case GRUB_INSTALL_PLATFORM_I386_EFI:
- efi_file = "BOOTIA32.EFI";
- break;
- case GRUB_INSTALL_PLATFORM_X86_64_EFI:
- efi_file = "BOOTX64.EFI";
- break;
- case GRUB_INSTALL_PLATFORM_IA64_EFI:
- efi_file = "BOOTIA64.EFI";
- break;
- case GRUB_INSTALL_PLATFORM_ARM_EFI:
- efi_file = "BOOTARM.EFI";
- break;
- case GRUB_INSTALL_PLATFORM_ARM64_EFI:
- efi_file = "BOOTAA64.EFI";
- break;
- case GRUB_INSTALL_PLATFORM_RISCV32_EFI:
- efi_file = "BOOTRISCV32.EFI";
- break;
- case GRUB_INSTALL_PLATFORM_RISCV64_EFI:
- efi_file = "BOOTRISCV64.EFI";
- break;
- default:
- grub_util_error ("%s", _("You've found a bug"));
- break;
- }
+ if (!efi_suffix)
+ grub_util_error ("%s", _("You've found a bug"));
+ efi_file = xasprintf ("BOOT%s.EFI", efi_suffix_upper);
}
else
{
/* It is convenient for each architecture to have a different
efi_file, so that different versions can be installed in parallel.
*/
- switch (platform)
- {
- case GRUB_INSTALL_PLATFORM_I386_EFI:
- efi_file = "grubia32.efi";
- break;
- case GRUB_INSTALL_PLATFORM_X86_64_EFI:
- efi_file = "grubx64.efi";
- break;
- case GRUB_INSTALL_PLATFORM_IA64_EFI:
- efi_file = "grubia64.efi";
- break;
- case GRUB_INSTALL_PLATFORM_ARM_EFI:
- efi_file = "grubarm.efi";
- break;
- case GRUB_INSTALL_PLATFORM_ARM64_EFI:
- efi_file = "grubaa64.efi";
- break;
- case GRUB_INSTALL_PLATFORM_RISCV32_EFI:
- efi_file = "grubriscv32.efi";
- break;
- case GRUB_INSTALL_PLATFORM_RISCV64_EFI:
- efi_file = "grubriscv64.efi";
- break;
- default:
- efi_file = "grub.efi";
- break;
- }
+ efi_file = xasprintf ("grub%s.efi", efi_suffix);
}
t = grub_util_path_concat (3, efidir, "EFI", efi_distributor);
free (efidir);
@@ -1375,14 +1378,38 @@ main (int argc, char *argv[])
}
}
- if (!have_abstractions)
+ char *efi_signed = NULL;
+ switch (platform)
+ {
+ case GRUB_INSTALL_PLATFORM_I386_EFI:
+ case GRUB_INSTALL_PLATFORM_X86_64_EFI:
+ case GRUB_INSTALL_PLATFORM_ARM_EFI:
+ case GRUB_INSTALL_PLATFORM_ARM64_EFI:
+ case GRUB_INSTALL_PLATFORM_IA64_EFI:
+ {
+ char *dir = xasprintf ("%s-signed", grub_install_source_directory);
+ char *signed_image;
+ signed_image = xasprintf ("grub%s.efi.signed", efi_suffix);
+ efi_signed = grub_util_path_concat (2, dir, signed_image);
+ break;
+ }
+
+ default:
+ break;
+ }
+
+ if (!efi_signed || !grub_util_is_regular (efi_signed))
+ uefi_secure_boot = 0;
+
+ if (!have_abstractions || uefi_secure_boot)
{
if ((disk_module && grub_strcmp (disk_module, "biosdisk") != 0)
|| grub_drives[1]
|| (!install_drive
&& platform != GRUB_INSTALL_PLATFORM_POWERPC_IEEE1275)
|| (install_drive && !is_same_disk (grub_drives[0], install_drive))
- || !have_bootdev (platform))
+ || !have_bootdev (platform)
+ || uefi_secure_boot)
{
char *uuid = NULL;
/* generic method (used on coreboot and ata mod). */
@@ -1927,7 +1957,72 @@ main (int argc, char *argv[])
case GRUB_INSTALL_PLATFORM_IA64_EFI:
{
char *dst = grub_util_path_concat (2, efidir, efi_file);
- grub_install_copy_file (imgfile, dst, 1);
+ if (uefi_secure_boot)
+ {
+ char *shim_signed = NULL;
+ char *mok_signed = NULL, *mok_file = NULL;
+ char *fb_signed = NULL, *fb_file = NULL;
+ char *config_dst;
+ FILE *config_dst_f;
+
+ shim_signed = xasprintf ("/usr/lib/shim/shim%s.efi.signed", efi_suffix);
+ mok_signed = xasprintf ("mm%s.efi.signed", efi_suffix);
+ mok_file = xasprintf ("mm%s.efi", efi_suffix);
+ fb_signed = xasprintf ("fb%s.efi.signed", efi_suffix);
+ fb_file = xasprintf ("fb%s.efi", efi_suffix);
+
+ if (grub_util_is_regular (shim_signed))
+ {
+ char *chained_base, *chained_dst;
+ char *mok_src, *mok_dst, *fb_src, *fb_dst;
+ if (!removable)
+ {
+ free (efi_file);
+ efi_file = xasprintf ("shim%s.efi", efi_suffix);
+ free (dst);
+ dst = grub_util_path_concat (2, efidir, efi_file);
+ }
+ grub_install_copy_file (shim_signed, dst, 1);
+ chained_base = xasprintf ("grub%s.efi", efi_suffix);
+ chained_dst = grub_util_path_concat (2, efidir, chained_base);
+ grub_install_copy_file (efi_signed, chained_dst, 1);
+ free (chained_dst);
+ free (chained_base);
+
+ /* Not critical, so not an error if they are not present (as it
+ won't be for older releases); but if we have them, make
+ sure they are installed. */
+ mok_src = grub_util_path_concat (2, "/usr/lib/shim/",
+ mok_signed);
+ mok_dst = grub_util_path_concat (2, efidir,
+ mok_file);
+ grub_install_copy_file (mok_src,
+ mok_dst, 0);
+ free (mok_src);
+ free (mok_dst);
+
+ fb_src = grub_util_path_concat (2, "/usr/lib/shim/",
+ fb_signed);
+ fb_dst = grub_util_path_concat (2, efidir,
+ fb_file);
+ if (!removable)
+ grub_install_copy_file (fb_src,
+ fb_dst, 0);
+ free (fb_src);
+ free (fb_dst);
+ }
+ else
+ grub_install_copy_file (efi_signed, dst, 1);
+
+ config_dst = grub_util_path_concat (2, efidir, "grub.cfg");
+ grub_install_copy_file (load_cfg, config_dst, 1);
+ config_dst_f = grub_util_fopen (config_dst, "ab");
+ fprintf (config_dst_f, "configfile $prefix/grub.cfg\n");
+ fclose (config_dst_f);
+ free (config_dst);
+ }
+ else
+ grub_install_copy_file (imgfile, dst, 1);
grub_set_install_backup_ponr ();
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