linux-kernel - [PATCH] scripts: prune-kernel : prune kernels generalized way

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Date:   Sat, 19 Oct 2019 18:37:22 +0530
From:   Bhaskar Chowdhury <unixbhaskar@...il.com>
To:     yamada.masahiro@...ionext.com, michal.lkml@...kovi.net
Cc:     rdunlap@...radead.org, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org, bfields@...ldses.org,
        Bhaskar Chowdhury <unixbhaskar@...il.com>
Subject: [PATCH] scripts: prune-kernel : prune kernels generalized way

This patch will remove old kernel from the system in a selective way.

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@...il.com>
---
 scripts/prune-kernel | 86 ++++++++++++++++++++++++++++++++++++--------
 1 file changed, 72 insertions(+), 14 deletions(-)

diff --git a/scripts/prune-kernel b/scripts/prune-kernel
index e8aa940bc0a9..9d839a4e4539 100755
--- a/scripts/prune-kernel
+++ b/scripts/prune-kernel
@@ -5,17 +5,75 @@
 # again, /boot and /lib/modules/ eventually fill up.
 # Dumb script to purge that stuff:

-for f in "$@"
-do
-        if rpm -qf "/lib/modules/$f" >/dev/null; then
-                echo "keeping $f (installed from rpm)"
-        elif [ $(uname -r) = "$f" ]; then
-                echo "keeping $f (running kernel) "
-        else
-                echo "removing $f"
-                rm -f "/boot/initramfs-$f.img" "/boot/System.map-$f"
-                rm -f "/boot/vmlinuz-$f"   "/boot/config-$f"
-                rm -rf "/lib/modules/$f"
-                new-kernel-pkg --remove $f
-        fi
-done
+#for f in "$@"
+#do
+#       if rpm -qf "/lib/modules/$f" >/dev/null; then
+#                echo "keeping $f (installed from rpm)"
+#        elif [ $(uname -r) = "$f" ]; then
+#                echo "keeping $f (running kernel) "
+#        else
+#                echo "removing $f"
+#                rm -f "/boot/initramfs-$f.img" "/boot/System.map-$f"
+#                rm -f "/boot/vmlinuz-$f"   "/boot/config-$f"
+#                rm -rf "/lib/modules/$f"
+#                new-kernel-pkg --remove $f
+#       fi
+#done
+boot_dir=/boot
+modules_dir=/lib/modules
+
+function remove_old_kernel(){
+	cd $boot_dir
+	rm -If vmlinuz-$kernel_version System.map-$kernel_version config-$kernel_version
+}
+
+function remove_old_modules_dir(){
+	cd $modules_dir
+	rm -rf $modules_version
+}
+
+printf "\n\n Enlist the installed kernels \n\n"
+
+
+find $boot_dir -name "vmlinuz-*" -type f -exec ls -1 {} \;
+
+printf "\n\n\n Please give the kernel version to remove: %s"
+read kernel_version
+
+if [[ $kernel_version == "" ]];then
+	exit 1
+else
+	remove_old_kernel
+fi
+
+printf "\n\n Enlist the installed modules directory \n\n"
+
+find $modules_dir -maxdepth 0 -type d -exec ls -1 {} \;
+
+printf "\n\n Please give the full modules directory name to remove: %s"
+read modules_version
+
+if [[ $modules_version == "" ]];then
+	printf "You have forgotten to give the modules dir to remove"
+else
+	remove_old_modules_dir
+fi
+
+printf "\n\n\n Removed kernel version:$kernel_version and associated modules:$modules_version ...Done \n"
+
+while :
+ do
+    printf "\n\n Do you want to remove another?[YN]: %s"
+    read response
+       if [[ $response == "Y" ]];then
+	 printf "Please give another version to remove: %s"
+	 read kernel_version
+	 remove_old_kernel
+	 printf "Please give the full modules directory name to remove: %s"
+	 read modules_version
+	 remove_old_modules_dir
+	 printf "\n\n\n Removed kernel version:$kernel_version and associated modules:$modules_version ..Done \n\n"
+      elif [[ $response == "N" ]];then
+	 exit 1
+    fi
+ done
--
2.21.0