Adding linting for initcpio scripts

archiso/initcpio/install/*:
Setting bash shebang for all scripts and making them comform with shellcheck.

archiso/initcpio/{hooks,script}/*:
Setting ash shebang for all scripts and making them comform with shellcheck (for dash, as shellcheck has no ash specific
ruleset). Essentially the ash based scripts should be POSIX compliant as much as possible to have an easier time
writing, debugging and maintaining them.
Ensuring that variables are not treated as options and introducing variable quoting.

.gitlab-ci.yml:
Integrating shellcheck for initcpio scripts.

Closes #32

1 files changed, 16 insertions, 11 deletions

diff --git a/archiso/initcpio/hooks/archiso_loop_mnt b/archiso/initcpio/hooks/archiso_loop_mnt
index 2e99404..c32a544 100644
--- a/archiso/initcpio/hooks/archiso_loop_mnt
+++ b/archiso/initcpio/hooks/archiso_loop_mnt
@@ -1,10 +1,12 @@
-# vim: set ft=sh:
+#!/bin/ash
 
 run_hook () {
-    [[ -n "${img_label}" ]] && img_dev="/dev/disk/by-label/${img_label}"
-    [[ -z "${img_flags}" ]] && img_flags="defaults"
-    if [[ -n "${img_dev}" && -n "${img_loop}" ]]; then
-        mount_handler="archiso_loop_mount_handler"
+    # shellcheck disable=SC2154 # defined via initcpio's parse_cmdline()
+    [ -n "${img_label}" ] && img_dev="/dev/disk/by-label/${img_label}"
+    [ -z "${img_flags}" ] && img_flags="defaults"
+    # shellcheck disable=SC2154 # defined via initcpio's parse_cmdline()
+    if [ -n "${img_dev}" ] && [ -n "${img_loop}" ]; then
+        export mount_handler="archiso_loop_mount_handler"
     fi
 }
 
@@ -15,21 +17,24 @@ archiso_loop_mount_handler () {
 
     msg ":: Setup a loop device from ${img_loop} located at device ${img_dev}"
     _mnt_dev "${img_dev}" "/run/archiso/img_dev" "-r" "${img_flags}"
-    if [[ "${copytoram}" != "y" ]]; then
-        echo $(readlink -f ${img_dev}) >> /run/archiso/used_block_devices
+    # shellcheck disable=SC2154 # defined via initcpio's parse_cmdline()
+    if [ "${copytoram}" != "y" ]; then
+        readlink -f "${img_dev}" >> /run/archiso/used_block_devices
     fi
 
     if _dev_loop=$(losetup --find --show --read-only "/run/archiso/img_dev/${img_loop}"); then
-        archisodevice="${_dev_loop}"
+        export archisodevice="${_dev_loop}"
     else
         echo "ERROR: Setting loopback device for file '/run/archiso/img_dev/${img_loop}'"
         launch_interactive_shell
     fi
 
-    archiso_mount_handler ${newroot}
+    archiso_mount_handler "${newroot}"
 
-    if [[ "${copytoram}" == "y" ]]; then
-        losetup -d ${_dev_loop} 2>/dev/null
+    if [ "${copytoram}" = "y" ]; then
+        losetup -d "${_dev_loop}" 2>/dev/null
         umount /run/archiso/img_dev
     fi
 }
+
+# vim: set ft=sh: