From 23bb8a747df0b97f0ea5cc4444528dc3ef231edd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Krizs=C3=A1n=20P=C3=A9ter?= <krizsan.peter@gmail.com>
Date: Fri, 22 Nov 2024 15:01:26 +0100
Subject: [PATCH] Initial functions library

---
 libs/functions.sh | 69 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 libs/functions.sh

diff --git a/libs/functions.sh b/libs/functions.sh
new file mode 100644
index 0000000..a21d8d7
--- /dev/null
+++ b/libs/functions.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+
+# Helper function to pach the packages.ent
+# Parameters are in this order: major, minor, patch, md5 and full path to packages.ent
+patchKernelVersion()
+{
+    if [ ! -f "$5" ] ; then
+        echo "The packages.ent file is not exist or not defined." >&2
+        echo "File: $5"
+        return 4
+    fi
+
+    sed -i -E "s@(<\!ENTITY linux-major-version \"+)(.+\">)@\1$1\">@" "$5"
+    sed -i -E "s@(<\!ENTITY linux-minor-version \"+)(.+\">)@\1$2\">@" "$5"    
+    sed -i -E "s@(<\!ENTITY linux-md5 \"+)(.+\">)@\1$4\">@" "$5"
+
+    if [ "-" == "$3" ] ; then
+        sed -i -E '/<!--/ n; /<\!ENTITY linux-patch-version "/{s/<!E/<!--<!E/g;s/">/">-->/g;}' "$5"
+        sed -i -E '/linux-minor-version;">-->/{s/<!--//g;s/-->//g;}' "$5"
+        sed -i -E '/<!--/ n; /linux-patch-version;">/{s/<!E/<!--<!E/g;s/;">/;">-->/g;}' "$5"
+    else
+        sed -i -E '/<!ENTITY linux-patch-version "/{s/<!--//g;s/-->//g;}' "$5"
+        sed -i -E "s@(<\!ENTITY linux-patch-version \"+)(.+\">)@\1$3\">@" "$5"
+        sed -i -E '/linux-patch-version;">-->/{s/<!--//g;s/-->//g;}' "$5"
+        sed -i -E '/<!--/ n; /linux-minor-version;">/{s/<!E/<!--<!E/g;s/;">/;">-->/g;}' "$5"
+    fi
+}
+
+
+# Function that createst an fstab based on the incoming folder
+createFstab()
+{(
+    # Get mount info from lsblk output
+    local LSBLK_INFO
+    LSBLK_INFO=$(lsblk -l -o MOUNTPOINT,PATH,NAME,PKNAME,PARTUUID,FSTYPE,PTTYPE | sed "/^ /d")
+
+    printf "# Begin /etc/fstab\n\n"
+    printf '%-45s    %-11s    %-4s    %-16s    %-4s    %-10s\n' "# File system (PARTUUID)" "mount-point" "type" "options" "dump" "fsck"
+    printf '#%104s\n\n' "order"
+
+    # Find the root mount point
+    local DIR_ROOT
+    DIR_ROOT=$(grep "^$1 " <<< "$LSBLK_INFO")
+    if [ -z "$DIR_ROOT" ] ; then
+        DIR_ROOT=$(grep "^/ " <<< "$LSBLK_INFO")
+    fi
+    if [ -n "$DIR_ROOT" ] ; then
+        printf '%-45s    %-11s    %-4s    %-16s    %-4s    %-10s\n' "PARTUUID=$(awk '{print $5}' <<< "$DIR_ROOT")" / "$(awk '{print $6}' <<< "$DIR_ROOT")" defaults 1 1
+    fi
+
+    # Find if there is a separate boot drive
+    local DIR_BOOT
+    DIR_BOOT=$(grep "^$1/boot " <<< "$LSBLK_INFO")
+    if [ -z "$DIR_BOOT" ] && [ -z "$1" ]; then
+        DIR_BOOT=$(grep "^/boot " <<< "$LSBLK_INFO")
+    fi
+    if [ -n "$DIR_BOOT" ] ; then
+        printf '%-45s    %-11s    %-4s    %-16s    %-4s    %-10s\n' "PARTUUID=$(awk '{print $5}' <<< "$DIR_BOOT")" /boot "$(awk '{print $6}' <<< "$DIR_BOOT")" noauto,defaults 0 0
+    fi
+
+    # Find if there is a swap partition
+    local DIR_SWAP
+    DIR_SWAP=$(grep "^\[SWAP\] " <<< "$LSBLK_INFO")
+    if [ -n "$DIR_SWAP" ] ; then
+        printf '%-45s    %-11s    %-4s    %-16s    %-4s    %-10s\n' "PARTUUID=$(awk '{print $5}' <<< "$DIR_SWAP")" swap "$(awk '{print $6}' <<< "$DIR_SWAP")" pri=1 0 0
+    fi
+
+    printf "\n# End /etc/fstab\n"    
+)}
\ No newline at end of file