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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, 5 Oct 2018 16:29:47 +0200
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Subject: [PATCH] Only set kernelopts in grubenv if it wasn't set before
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Users may want to use a different command line parameters, so if there's
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a kernelopts var set in grubenv, grub2-mkconfig shouldn't reset it.
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While being there, print a warning so users know that they shouldn't edit
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the grub config file and instead edit the BootLoaderSpec config files.
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Resolves: rhbz#1636466
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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 | 20 +++++++++++++++++++-
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util/grub.d/10_linux_bls.in | 4 +++-
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2 files changed, 22 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 9682e97b7..01e66e5fc 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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@@ -82,6 +82,20 @@ case x"$GRUB_FS" in
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;;
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esac
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+populate_header_warn()
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+{
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+cat <
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+
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+# This section was generated by a script. Do not modify the generated file - all changes
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+# will be lost the next time file is regenerated. Instead edit the BootLoaderSpec files.
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+#
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+# The blscfg command parses the BootLoaderSpec files stored in /boot/loader/entries and
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+# populates the boot menu. Please refer to the Boot Loader Specification documentation
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+# for the files format: https://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/.
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+
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+EOF
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+}
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+
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mktitle ()
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{
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local title_type
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@@ -141,6 +155,8 @@ linux_entry ()
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prepare_grub_to_access_device ${boot_device} boot
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fi
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+ populate_header_warn
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+
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cat << EOF
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insmod blscfg
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blscfg
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@@ -150,7 +166,9 @@ fi
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EOF
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${grub_editenv} - set saved_entry=0
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- ${grub_editenv} - set kernelopts="root=${linux_root_device_thisversion} ro ${args}"
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+ if ! grub2-editenv - list | grep -q kernelopts; then
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+ ${grub_editenv} - set kernelopts="root=${linux_root_device_thisversion} ro ${args}"
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+ fi
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exit 0
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fi
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diff --git a/util/grub.d/10_linux_bls.in b/util/grub.d/10_linux_bls.in
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index 3cc7803c6..8a3379578 100644
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--- a/util/grub.d/10_linux_bls.in
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+++ b/util/grub.d/10_linux_bls.in
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@@ -201,7 +201,9 @@ linux_entry ()
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populate_menu
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${grub_editenv} - set saved_entry=0
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- ${grub_editenv} - set kernelopts="root=${linux_root_device_thisversion} ro ${args}"
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+ if ! grub2-editenv - list | grep -q kernelopts; then
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+ ${grub_editenv} - set kernelopts="root=${linux_root_device_thisversion} ro ${args}"
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+ fi
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exit 0
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fi
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