Some BLS cleanups and fixes
- 20-grub-install: Don't add an id field to generated BLS snippets - 99-grub-mkconfig: Disable BLS usage for Xen machines Resolves: rhbz#1703700 - Don't add a class option to menu entries generated for ppc64le Resolves: rhbz#1758225 - 10_linux.in: Also use GRUB_CMDLINE_LINUX_DEFAULT to set kernelopts - blscfg: Don't hardcode an env var as fallback for the BLS options field Resolves: rhbz#1710483 Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
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Javier Martinez Canillas
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commit
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@ -0,0 +1,78 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Javier Martinez Canillas <javierm@redhat.com>
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Date: Fri, 4 Oct 2019 16:43:05 +0200
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Subject: [PATCH] Don't add a class option to menu entries generated for
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ppc64le
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For ppc64le a grub config file with menuentry commands is still generated
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even when BLS support is enabled. That's because BLS support was added to
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Petitboot 1.8.0 and any previous version won't be able to parse BLS files.
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To make the BLS snippets the source of truth, these are used to generate
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the menuentry commands in the grub config file.
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And to keep it consistent across all ppc64le machines regardless of the
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firmware used, the grub config file is also generated for machines with
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OF that use grub2 and would have BLS support.
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The BLS snippets created by the kernel package have fields that are used
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to specify the generated menuentry command users and class options. These
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fields are not present in BLS snippets created by OSTree though, so the
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script generating the menuentry commands will add options with an empty
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argument which will lead to grub failing to parse them.
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We could check if the field is defined before attempting to add those, but
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since the grub2 blscfg module also supports setting these to variables, it
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could lead to an empty argument even if was defined in the BLS snippet if
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the variable doesn't exist.
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So to make more robust, just don't add a class to the menuentry commands
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generated by the script. It's better to not have a class for the menuentry
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than grub2 failing to parse the command and not populating the boot menu.
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Resolves: rhbz#1758225
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Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
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---
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util/grub.d/10_linux_bls.in | 10 +---------
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1 file changed, 1 insertion(+), 9 deletions(-)
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diff --git a/util/grub.d/10_linux_bls.in b/util/grub.d/10_linux_bls.in
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index 1b7536435f1..68fbedf2129 100644
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--- a/util/grub.d/10_linux_bls.in
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+++ b/util/grub.d/10_linux_bls.in
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@@ -127,9 +127,7 @@ read_config()
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initrd=""
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options=""
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linux=""
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- grub_users=""
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grub_arg=""
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- grub_class=""
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while read -r line
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do
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@@ -148,15 +146,9 @@ read_config()
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"options")
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options=${value}
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;;
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- "grub_users")
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- grub_users=${value}
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- ;;
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"grub_arg")
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grub_arg=${value}
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;;
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- "grub_class")
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- grub_class=${value}
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- ;;
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esac
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done < ${config_file}
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}
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@@ -180,7 +172,7 @@ populate_menu()
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for bls in "${files[@]}" ; do
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read_config "${blsdir}/${bls}.conf"
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- menu="${menu}menuentry '${title}' --class ${grub_class} ${grub_arg} --id=${bls} {\n"
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+ menu="${menu}menuentry '${title}' ${grub_arg} --id=${bls} {\n"
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menu="${menu}\t linux ${linux} ${options}\n"
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if [ -n "${initrd}" ] ; then
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menu="${menu}\t initrd ${boot_prefix}${initrd}\n"
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@ -0,0 +1,45 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Javier Martinez Canillas <javierm@redhat.com>
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Date: Tue, 15 Oct 2019 09:08:25 +0200
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Subject: [PATCH] 10_linux.in: Also use GRUB_CMDLINE_LINUX_DEFAULT to set
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kernelopts
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The GRUB documentation mentions that there are two variables to set the
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linux kernel cmdline: GRUB_CMDLINE_LINUX and GRUB_CMDLINE_LINUX_DEFAULT.
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The former is added to all the menuentry commands and the latter is not
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added to the recovery mode menu entries. But the blscfg module doesn't
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populate recovery entries from the BLS snippets, so the values set in the
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GRUB_CMDLINE_LINUX_DEFAULT variable should also be included in kernelopts.
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This is needed because the GRUB_CMDLINE_LINUX_DEFAULT option is mentioned
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in the GRUB documentation so users assume that the kernel cmdline options
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can be changed by setting this option and running the grub2-mkconfig tool.
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Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
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---
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util/grub.d/10_linux.in | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
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index 1520b7e47c1..0471464e68e 100644
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--- a/util/grub.d/10_linux.in
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+++ b/util/grub.d/10_linux.in
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@@ -118,7 +118,7 @@ if [ "x${GRUB_ENABLE_BLSCFG}" = "xtrue" ]; then
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populate_header_warn
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cat << EOF
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-set default_kernelopts="root=${LINUX_ROOT_DEVICE} ro ${GRUB_CMDLINE_LINUX}"
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+set default_kernelopts="root=${LINUX_ROOT_DEVICE} ro ${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
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insmod blscfg
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blscfg
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@@ -134,7 +134,7 @@ EOF
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fi
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fi
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- ${grub_editenv} - set kernelopts="root=${LINUX_ROOT_DEVICE} ro ${GRUB_CMDLINE_LINUX}"
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+ ${grub_editenv} - set kernelopts="root=${LINUX_ROOT_DEVICE} ro ${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
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if [ -n "${GRUB_EARLY_INITRD_LINUX_CUSTOM}" ]; then
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${grub_editenv} - set early_initrd="${GRUB_EARLY_INITRD_LINUX_CUSTOM}"
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fi
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@ -0,0 +1,63 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Javier Martinez Canillas <javierm@redhat.com>
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Date: Mon, 14 Oct 2019 17:37:26 +0200
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Subject: [PATCH] blscfg: Don't hardcode an env var as fallback for the BLS
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options field
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If the BLS fragments don't have an options field or if this was set to an
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environment variable that was not defined in the grubenv file, the blscfg
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module searches for an default_kernelopts variable that is defined in the
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grub.cfg file.
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But the blscfg module shouldn't hardcode fallbacks variables and instead
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this logic should be handled in the GRUB config file itself.
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Also, add a comment explaining where the kernelopts variable is supposed
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to be defined and what is the process for the user to change its value.
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Resolves: rhbz#1710483
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Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
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---
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grub-core/commands/blscfg.c | 4 ----
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util/grub.d/10_linux.in | 12 +++++++++++-
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2 files changed, 11 insertions(+), 5 deletions(-)
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diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c
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index 1ec89870483..471975fd2e5 100644
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--- a/grub-core/commands/blscfg.c
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+++ b/grub-core/commands/blscfg.c
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@@ -733,10 +733,6 @@ static void create_entry (struct bls_entry *entry)
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title = bls_get_val (entry, "title", NULL);
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options = expand_val (bls_get_val (entry, "options", NULL));
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-
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- if (!options)
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- options = expand_val (grub_env_get("default_kernelopts"));
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-
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initrds = bls_make_list (entry, "initrd", NULL);
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devicetree = expand_val (bls_get_val (entry, "devicetree", NULL));
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diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
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index 0471464e68e..21a6915dca3 100644
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--- a/util/grub.d/10_linux.in
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+++ b/util/grub.d/10_linux.in
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@@ -118,7 +118,17 @@ if [ "x${GRUB_ENABLE_BLSCFG}" = "xtrue" ]; then
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populate_header_warn
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cat << EOF
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-set default_kernelopts="root=${LINUX_ROOT_DEVICE} ro ${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
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+# The kernelopts variable should be defined in the grubenv file. But to ensure that menu
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+# entries populated from BootLoaderSpec files that use this variable work correctly even
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+# without a grubenv file, define a fallback kernelopts variable if this has not been set.
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+#
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+# The kernelopts variable in the grubenv file can be modified using the grubby tool or by
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+# executing the grub2-mkconfig tool. For the latter, the values of the GRUB_CMDLINE_LINUX
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+# and GRUB_CMDLINE_LINUX_DEFAULT options from /etc/default/grub file are used to set both
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+# the kernelopts variable in the grubenv file and the fallback kernelopts variable.
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+if [ -z "\${kernelopts}" ]; then
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+ set kernelopts="root=${LINUX_ROOT_DEVICE} ro ${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
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+fi
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insmod blscfg
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blscfg
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@ -180,3 +180,6 @@ Patch0179: 0179-Fix-build-error-with-the-fdt-module-on-risc-v.patch
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Patch0180: 0180-RISC-V-Fix-computation-of-pc-relative-relocation-off.patch
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Patch0181: 0181-blscfg-Add-support-for-the-devicetree-field.patch
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Patch0182: 0182-Set-a-devicetree-var-in-a-BLS-config-if-GRUB_DEFAULT.patch
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Patch0183: 0183-Don-t-add-a-class-option-to-menu-entries-generated-f.patch
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Patch0184: 0184-10_linux.in-Also-use-GRUB_CMDLINE_LINUX_DEFAULT-to-s.patch
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Patch0185: 0185-blscfg-Don-t-hardcode-an-env-var-as-fallback-for-the.patch
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12
grub2.spec
12
grub2.spec
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Name: grub2
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Epoch: 1
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Version: 2.04
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Release: 2%{?dist}
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Release: 3%{?dist}
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Summary: Bootloader with support for Linux, Multiboot and more
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License: GPLv3+
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URL: http://www.gnu.org/software/grub/
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@ -515,6 +515,16 @@ rm -r /boot/grub2.tmp/ || :
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%endif
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%changelog
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* Thu Oct 17 2019 Javier Martinez Canillas <javierm@redhat.com> - 2.04-3
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- 20-grub-install: Don't add an id field to generated BLS snippets
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- 99-grub-mkconfig: Disable BLS usage for Xen machines
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Resolves: rhbz#1703700
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- Don't add a class option to menu entries generated for ppc64le
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Resolves: rhbz#1758225
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- 10_linux.in: Also use GRUB_CMDLINE_LINUX_DEFAULT to set kernelopts
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- blscfg: Don't hardcode an env var as fallback for the BLS options field
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Resolves: rhbz#1710483
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* Wed Sep 18 2019 Javier Martinez Canillas <javierm@redhat.com> - 2.04-2
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- A couple of RISC-V fixes
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- Remove grub2-tools %%posttrans scriptlet that migrates to a BLS config
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