Fix init btrfs check location, fix error msg spelling brtfs -> btrfs

lib/bkctld-inc

@@ -16,7 +16,7 @@ create_inc_btrfs() {
 
     btrfs_bin=$(command -v btrfs)
     if [ -z "${btrfs_bin}" ]; then
-        error "btrfs not found. Please install brtfs-progs."
+        error "btrfs not found. Please install btrfs-progs."
     fi
 
     if dry_run; then

lib/bkctld-inc-lock

@@ -14,7 +14,7 @@ lock_target() {
     target="${1:?}"
     btrfs_bin=$(command -v btrfs)
     if [ -z ${btrfs_bin} ]; then
-        error "btrfs not found. Please install brtfs-progs."
+        error "btrfs not found. Please install btrfs-progs."
     fi
     if is_btrfs "${target}"; then
         ${btrfs_bin} property set -ts "${target}" ro true

lib/bkctld-init

@@ -18,12 +18,11 @@ test -d "${jail_path}" && error "Skip jail \`${jail_name}' : it already exists"
 # Create config and jails directory
 mkdir --parents "${CONFDIR}" "${JAILDIR}"
 
-btrfs_bin=$(command -v btrfs)
-if [ -z ${btrfs_bin} ]; then
-    error "btrfs not found. Please install brtfs-progs."
-fi
-
 if is_btrfs "$(dirname "${JAILDIR}")" || is_btrfs "${JAILDIR}"; then
+    btrfs_bin=$(command -v btrfs)
+    if [ -z ${btrfs_bin} ]; then
+        error "btrfs not found. Please install btrfs-progs."
+    fi
     ${btrfs_bin} subvolume create "${jail_path}"
 else
     mkdir --parents "${jail_path}"

lib/bkctld-remove

@@ -54,7 +54,7 @@ rm -rf "$(jail_config_dir "${jail_name}")"
 
 btrfs_bin=$(command -v btrfs)
 if [ -z ${btrfs_bin} ]; then
-    error "btrfs not found. Please install brtfs-progs."
+    error "btrfs not found. Please install btrfs-progs."
 fi
 
 if is_btrfs "${jail_path}"; then

lib/bkctld-rm

@@ -64,7 +64,7 @@ delete_inc_btrfs() {
     btrfs_bin=$(command -v btrfs)
 
     if [ -z ${btrfs_bin} ]; then
-        error "btrfs not found. Please install brtfs-progs."
+        error "btrfs not found. Please install btrfs-progs."
     fi
 
     if dry_run; then