Fix permissions for creation and deletion

make.iso.preseed.sh

@@ -84,6 +84,8 @@ fi
 wget -q "${USE_DEBIAN_ISO}" -O "${DEBIAN_DL_ISO_PATH}"
 command 7z x -o"${TEMP_ISO_DIR}" -- "${DEBIAN_DL_ISO_PATH}" > /dev/null
 rm -rf -- "${DEBIAN_DL_ISO_PATH}"
+## Ensure to have the write permission on the extracted folder
+chmod 0700 -- "${TEMP_ISO_DIR}"
 # }}}
 # Manage initrd.gz file {{{
 mkdir -- "${TEMP_INITRD_DIR}"
@@ -113,9 +115,13 @@ rm -rf -- "${TEMP_INITRD_DIR}"
 chmod -w -R -- $(dirname -- "${INITRD_GZ_PATH}")
 # }}}
 # Generate new md5sum {{{
+## Ensure to have the write permission on the iso folder
+chmod 0700 -- "${TEMP_ISO_DIR}"
 cd -- "${TEMP_ISO_DIR}" > /dev/null || exit 2
 ## Exclude some unwanted files
 find . -follow -type f -not \( -name "md5sum.txt" -o -name 'mkisofs' -o -name 'Bootable_NoEmulation.img' -o -path '*isolinux*' \) -exec md5sum {} \; > ./md5sum.txt
+## Fix md5sum.txt permissions
+chmod -w -- md5sum.txt
 cd - > /dev/null || exit 2
 # }}}
 # Generate new bootable iso {{{
@@ -125,6 +131,7 @@ xorriso -as mkisofs -o "${DEBIAN_PRESEED_ISO_PATH}" \
 -boot-load-size 4 -boot-info-table "${TEMP_ISO_DIR}"
 
 ## Then remove temp iso directory
+chmod u+w -R -- "${TEMP_ISO_DIR}"
 rm -rf -- "${TEMP_ISO_DIR}"
 
 # }}}