Fix warnings from shellcheck shell linter

1 files changed, 10 insertions, 16 deletions

diff --git a/recipes-sota/ostree-initrd/files/init.sh b/recipes-sota/ostree-initrd/files/init.sh
index 1814ca3..b88716c 100644
--- a/recipes-sota/ostree-initrd/files/init.sh
+++ b/recipes-sota/ostree-initrd/files/init.sh
@@ -1,17 +1,13 @@
 #!/bin/sh
-
-# global variables
-
-SMACK=n
-DEBUG=n
+set -eu
 
 # -------------------------------------------
 
-log_info() { echo "$0[$$]: $@" >&2; }
-log_error() { echo "$0[$$]: ERROR $@" >&2; }
+log_info() { echo "$0[$$]: $*" >&2; }
+log_error() { echo "$0[$$]: ERROR $*" >&2; }
 
 do_mount_fs() {
-        log_info "mounting FS: $@"
+        log_info "mounting FS: $*"
         [[ -e /proc/filesystems ]] && { grep -q "$1" /proc/filesystems || { log_error "Unknown filesystem"; return 1; } }
         [[ -d "$2" ]] || mkdir -p "$2"
         [[ -e /proc/mounts ]] && { grep -q -e "^$1 $2 $1" /proc/mounts && { log_info "$2 ($1) already mounted"; return 0; } }
@@ -26,10 +22,10 @@ bail_out() {
 }
 
 get_ostree_sysroot() {
-        for opt in `cat /proc/cmdline`; do
-                arg=`echo $opt | cut -d'=' -f1`
-                if [ $arg == "ostree_root" ]; then
-                        echo $opt | cut -d'=' -f2-
+        for opt in $(cat /proc/cmdline); do
+                arg=$(echo "$opt" | cut -d'=' -f1)
+                if [ "$arg" == "ostree_root" ]; then
+                        echo "$opt" | cut -d'=' -f2-
                         return
                 fi
         done
@@ -38,7 +34,7 @@ get_ostree_sysroot() {
 
 export PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/lib/ostree
 
-log_info "starting initrd script"
+log_info "Starting OSTree initrd script"
 
 do_mount_fs proc /proc
 do_mount_fs sysfs /sys
@@ -50,8 +46,6 @@ do_mount_fs tmpfs /run
 
 # check if smack is active (and if so, mount smackfs)
 grep -q smackfs /proc/filesystems && {
-        SMACK=y
-
         do_mount_fs smackfs /sys/fs/smackfs
 
         # adjust current label and network label
@@ -69,7 +63,7 @@ ostree-prepare-root /sysroot
 cd /sysroot
 for x in dev proc; do
         log_info "Moving /$x to new rootfs"
-        mount -o move /$x $x
+        mount -o move "/$x" "$x"
 done
 
 # switch to new rootfs