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d36cd88873
* gnu/packages/patches/grub-check-error-efibootmgr.patch: Add hunk to correct uninitialized variable.
197 lines
6.5 KiB
Diff
197 lines
6.5 KiB
Diff
Without this patch, GRUB may proceed to wipe all firmware boot entries
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and report a successful installation, even if efibootmgr hit an error.
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Origin URL:
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https://git.sv.gnu.org/cgit/grub.git/commit/?id=6400613ad0b463abc93362086a491cd2a5e99b0d
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From 6400613ad0b463abc93362086a491cd2a5e99b0d Mon Sep 17 00:00:00 2001
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From: Steve McIntyre <steve@einval.com>
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Date: Wed, 31 Jan 2018 21:49:36 +0000
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Subject: Make grub-install check for errors from efibootmgr
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Code is currently ignoring errors from efibootmgr, giving users
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clearly bogus output like:
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Setting up grub-efi-amd64 (2.02~beta3-4) ...
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Installing for x86_64-efi platform.
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Could not delete variable: No space left on device
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Could not prepare Boot variable: No space left on device
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Installation finished. No error reported.
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and then potentially unbootable systems. If efibootmgr fails, grub-install
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should know that and report it!
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We've been using similar patch in Debian now for some time, with no ill effects.
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diff --git a/grub-core/osdep/unix/platform.c b/grub-core/osdep/unix/platform.c
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index a3fcfca..ca448bc 100644
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--- a/grub-core/osdep/unix/platform.c
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+++ b/grub-core/osdep/unix/platform.c
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@@ -78,19 +78,20 @@ get_ofpathname (const char *dev)
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dev);
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}
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-static void
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+static int
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grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
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{
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int fd;
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pid_t pid = grub_util_exec_pipe ((const char * []){ "efibootmgr", NULL }, &fd);
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char *line = NULL;
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size_t len = 0;
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+ int rc;
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if (!pid)
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{
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grub_util_warn (_("Unable to open stream from %s: %s"),
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"efibootmgr", strerror (errno));
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- return;
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+ return errno;
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}
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FILE *fp = fdopen (fd, "r");
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@@ -98,7 +99,7 @@ grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
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{
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grub_util_warn (_("Unable to open stream from %s: %s"),
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"efibootmgr", strerror (errno));
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- return;
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+ return errno;
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}
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line = xmalloc (80);
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@@ -119,23 +120,25 @@ grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
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bootnum = line + sizeof ("Boot") - 1;
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bootnum[4] = '\0';
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if (!verbosity)
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- grub_util_exec ((const char * []){ "efibootmgr", "-q",
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+ rc = grub_util_exec ((const char * []){ "efibootmgr", "-q",
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"-b", bootnum, "-B", NULL });
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else
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- grub_util_exec ((const char * []){ "efibootmgr",
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+ rc = grub_util_exec ((const char * []){ "efibootmgr",
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"-b", bootnum, "-B", NULL });
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}
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free (line);
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+ return rc;
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}
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-void
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+int
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grub_install_register_efi (grub_device_t efidir_grub_dev,
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const char *efifile_path,
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const char *efi_distributor)
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{
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const char * efidir_disk;
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int efidir_part;
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+ int ret;
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efidir_disk = grub_util_biosdisk_get_osdev (efidir_grub_dev->disk);
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efidir_part = efidir_grub_dev->disk->partition ? efidir_grub_dev->disk->partition->number + 1 : 1;
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@@ -151,23 +154,26 @@ grub_install_register_efi (grub_device_t efidir_grub_dev,
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grub_util_exec ((const char * []){ "modprobe", "-q", "efivars", NULL });
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#endif
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/* Delete old entries from the same distributor. */
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- grub_install_remove_efi_entries_by_distributor (efi_distributor);
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+ ret = grub_install_remove_efi_entries_by_distributor (efi_distributor);
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+ if (ret)
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+ return ret;
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char *efidir_part_str = xasprintf ("%d", efidir_part);
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if (!verbosity)
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- grub_util_exec ((const char * []){ "efibootmgr", "-q",
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+ ret = grub_util_exec ((const char * []){ "efibootmgr", "-q",
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"-c", "-d", efidir_disk,
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"-p", efidir_part_str, "-w",
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"-L", efi_distributor, "-l",
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efifile_path, NULL });
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else
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- grub_util_exec ((const char * []){ "efibootmgr",
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+ ret = grub_util_exec ((const char * []){ "efibootmgr",
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"-c", "-d", efidir_disk,
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"-p", efidir_part_str, "-w",
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"-L", efi_distributor, "-l",
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efifile_path, NULL });
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free (efidir_part_str);
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+ return ret;
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}
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void
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diff --git a/include/grub/util/install.h b/include/grub/util/install.h
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index 5910b0c..0dba8b6 100644
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--- a/include/grub/util/install.h
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+++ b/include/grub/util/install.h
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@@ -210,7 +210,7 @@ grub_install_create_envblk_file (const char *name);
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const char *
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grub_install_get_default_x86_platform (void);
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-void
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+int
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grub_install_register_efi (grub_device_t efidir_grub_dev,
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const char *efifile_path,
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const char *efi_distributor);
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diff --git a/util/grub-install.c b/util/grub-install.c
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index 5e4cdfd..690f180 100644
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--- a/util/grub-install.c
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+++ b/util/grub-install.c
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@@ -1848,9 +1848,13 @@ main (int argc, char *argv[])
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if (!removable && update_nvram)
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{
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/* Try to make this image bootable using the EFI Boot Manager, if available. */
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- grub_install_register_efi (efidir_grub_dev,
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- "\\System\\Library\\CoreServices",
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- efi_distributor);
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+ int ret;
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+ ret = grub_install_register_efi (efidir_grub_dev,
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+ "\\System\\Library\\CoreServices",
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+ efi_distributor);
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+ if (ret)
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+ grub_util_error (_("efibootmgr failed to register the boot entry: %s"),
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+ strerror (ret));
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}
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grub_device_close (ins_dev);
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@@ -1871,6 +1875,7 @@ main (int argc, char *argv[])
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{
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char * efifile_path;
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char * part;
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+ int ret;
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/* Try to make this image bootable using the EFI Boot Manager, if available. */
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if (!efi_distributor || efi_distributor[0] == '\0')
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@@ -1887,7 +1892,10 @@ main (int argc, char *argv[])
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efidir_grub_dev->disk->name,
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(part ? ",": ""), (part ? : ""));
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grub_free (part);
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- grub_install_register_efi (efidir_grub_dev,
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- efifile_path, efi_distributor);
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+ ret = grub_install_register_efi (efidir_grub_dev,
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+ efifile_path, efi_distributor);
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+ if (ret)
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+ grub_util_error (_("efibootmgr failed to register the boot entry: %s"),
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+ strerror (ret));
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}
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break;
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Below is a followup to the patch above: the uninitialized variable could lead
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‘grub-install’ to error out when it shouldn’t (seen on an AArch64 box where
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‘grub_install_remove_efi_entries_by_distributor’ didn't have any entry to
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remove):
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grub-install: error: efibootmgr failed to register the boot entry: Unknown error 65535.
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See <http://lists.gnu.org/archive/html/bug-grub/2018-10/msg00006.html>.
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--- grub-2.02/grub-core/osdep/unix/platform.c 2018-10-17 22:21:53.015284846 +0200
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+++ grub-2.02/grub-core/osdep/unix/platform.c 2018-10-17 22:21:55.595271222 +0200
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@@ -85,7 +85,7 @@ grub_install_remove_efi_entries_by_distr
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pid_t pid = grub_util_exec_pipe ((const char * []){ "efibootmgr", NULL }, &fd);
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char *line = NULL;
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size_t len = 0;
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- int rc;
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+ int rc = 0;
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if (!pid)
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{
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