add helper functions to get kernel path by kernel release and the path of current running kernel
Resolves: bz1895258
Upstream: Fedora
Conflict: None
commit 945cbbd59b
Author: Coiby Xu <coxu@redhat.com>
Date: Tue Dec 7 15:16:07 2021 +0800
add helper functions to get kernel path by kernel release and the path of current running kernel
grubby --info=kernel-path or --add-kernel=kernel-path accepts a kernel
path (e.g. /boot/vmlinuz-5.14.14-200.fc34.x86_64) instead of kernel release
(e.g 5.14.14-200.fc34.x86_64). So we need to know the kernel path given
a kernel release. Although for Fedora/RHEL, the kernel path is
"/boot/vmlinuz-<KERNEL_RELEASE>", a path kernel could also be
/boot/<machine-id>/<KERNEL_RELEASE>/vmlinuz. So the most reliable way to
find the kernel path given a kernel release is to use "grubby --info".
For osbuild, a kernel path may not yet exist but it's valid for
"grubby --update-kernel=KERNEL_PATH". For example, "grubby -info" may
output something as follows,
index=0
kernel="/var/cache/osbuild-worker/osbuild-store/tmp/tmp2prywdy5object/tree/boot/vmlinuz-5.15.10-100.fc34.x86_64"
args="ro no_timer_check net.ifnames=0 console=tty1 console=ttyS0,115200n8"
root="UUID=76a22bf4-f153-4541-b6c7-0332c0dfaeac"
initrd="/var/cache/osbuild-worker/osbuild-store/tmp/tmp2prywdy5object/tree/boot/initramfs-5.15.10-100.fc34.x86_64.img"
There is no need to check if path like
/var/cache/osbuild-worker/osbuild-store/tmp/tmp2prywdy5object/tree/boot/vmlinuz-5.15.10-100.fc34.x86_64
physically exists.
Note these helper functions doesn't support CoreOS/Atomic/Silverblue
since grubby isn't used by them.
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
This commit is contained in:
parent
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30
kdumpctl
30
kdumpctl
@ -1351,6 +1351,36 @@ get_dump_mode_by_kernel()
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fi
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}
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_filter_grubby_kernel_str()
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{
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local _grubby_kernel_str=$1
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echo -n "$_grubby_kernel_str" | sed -n -e 's/^kernel="\(.*\)"/\1/p'
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}
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_find_kernel_path_by_release()
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{
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local _release="$1" _grubby_kernel_str _kernel_path
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_grubby_kernel_str=$(grubby --info ALL | grep "^kernel=.*$_release")
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_kernel_path=$(_filter_grubby_kernel_str "$_grubby_kernel_str")
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if [[ -z $_kernel_path ]]; then
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derror "kernel $_release doesn't exist"
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return 1
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fi
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echo -n "$_kernel_path"
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}
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_get_current_running_kernel_path()
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{
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local _release _path
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_release=$(uname -r)
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if _path=$(_find_kernel_path_by_release "$_release"); then
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echo -n "$_path"
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else
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return 1
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fi
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}
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reset_crashkernel()
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{
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local kernel=$1 entry crashkernel_default
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