started new diskman.sh lib and reflect consequences on conf_disks module

lib/diskman.sh

@@ -0,0 +1,101 @@
+# ------------------------------------------------------------------------------
+# Disks and partitions manipulation function
+# This file is part of the init.sh project
+# Copyright (c) 2019-2021 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
+# ------------------------------------------------------------------------------
+# This file is distributed under 3-clause BSD license.
+# The complete license agreement can be obtained at:
+# https://opensource.org/licenses/BSD-3-Clause
+# ------------------------------------------------------------------------------
+
+
+# ------------------------------------------------------------------------------
+# Blank the given disks
+blank_disk()
+{
+    if [[ $(test -b /dev/$1) ]]; then
+        prnt I "Wipping $1 drive signature (a backup is made in /root)..."
+        wipefs --force --all --backup /dev/$1
+        prnt I "Filling beginning of $1 drive with zeroes..."
+        dd if="/dev/zero" of="$1" bs="512" count="1024"
+
+        # Update kernel partition scheme
+        partprobe
+    else
+        prnt E "The /dev/$1 file is not a bloc device!"
+        die 19
+    fi
+}
+
+
+# ------------------------------------------------------------------------------
+# Check if $1 is a block device and if it's blank
+is_blank()
+{
+    # That technique is fast but might not be relayable enough if we are on
+    # exotic data structure or filesystem...
+    local devstat=$(file /dev/$1 | sed "s@/dev/$1: @@")
+    if [[ $devstat == 'data' ]]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+# ------------------------------------------------------------------------------
+# Creating empty partitions
+# mkparts <disk> [dos|gpt] [list_of_partition_size]
+# Partition size like 10G for 10 GiB, 600M for 600 MiB and so on... Without unit
+# it will use a number of cylinder. 0 will stand for all remaining size.
+# If no partition size is provided we create a single whole disk partition.
+mkparts()
+{
+    local device=$1 && shit
+    if [[ $1 == "gtp" || $1 == "dos" ]]; then
+        local parttype=$1 && shift
+    else
+        # Default is GPT
+        local parttype="gpt"
+    fi
+
+    if [[ $(is_blank $device) ]]; then
+        prnt I "Creating a new ${parttype^^} partition table on $device..."
+        sfdisk -label /dev/$device $parttype
+        prnt I "Creating a new partition scheme on /dev/$1..."
+        local tmpfile=$(mktemp sfd.XXXX)
+        if [[ -n $1 ]]; then
+            # For each given size we make a partition
+            for $part in $@; then
+                if [[ $part == 0 ]]; then
+                    echo ",,L" >> $tmpfile
+                else
+                    echo ",$part,L" >> $tmpfile
+                fi
+            done
+        else
+            echo ",,L" >> $tmpfile
+        done
+        echo "write" >> $tmpfile
+        sfdisk "/dev/$device" < $tmpfile
+        rm $tmpfile
+        unset tmpfile
+    else
+        prnt E "The $1 block device is not blank, for security we won't proceed!"
+        die 20
+    fi
+    unset device parttype
+}
+
+# ------------------------------------------------------------------------------
+conf_ext4()
+{
+    # Todo
+}
+
+# ------------------------------------------------------------------------------
+conf_xfs()
+{
+    # todo
+}
+
+# EOF

modules/conf_disks.sh

@@ -69,30 +69,6 @@ conf_zfs()
     fi
 }
 
-# ------------------------------------------------------------------------------
-# Creation partitions for XFS or Ext4
-mkpart()
-{
-    prnt I "Création d'une nouvelle table de partition GPT..."
-    #fdisk -g 
-}
-
-# ------------------------------------------------------------------------------
-conf_ext4()
-{
-    mkpart
-    # Todo
-}
-
-# ------------------------------------------------------------------------------
-conf_xfs()
-{
-    prnt I "Installation des outils XFS..."
-    pkginst xfsprogs
-    mkpart
-    # todo
-}
-
 
 # ------------------------------------------------------------------------------
 conf_disks()