Add ShellCheck's `--enable=all` inside `cmd/`

The only exception is `cmd/vdev_id/vdev_id` which might be a subject of
refactoring (see #12084)

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #12912

cmd/Makefile.am

@@ -7,8 +7,9 @@ SUBDIRS += zpool_influxdb
 CPPCHECKDIRS  = zfs zpool zdb zhack zinject zstream ztest
 CPPCHECKDIRS += raidz_test zfs_ids_to_path zpool_influxdb
 
-# TODO: #12084: SHELLCHECKDIRS = fsck_zfs vdev_id zpool
-SHELLCHECKDIRS = fsck_zfs zpool
+# TODO: #12084: SHELLCHECKDIRS += vdev_id
+SHELLCHECKDIRS = fsck_zfs zed zpool zvol_wait
+SHELLCHECK_OPTS = --enable=all
 
 if USING_PYTHON
 SUBDIRS += arcstat arc_summary dbufstat

cmd/fsck_zfs/Makefile.am

@@ -4,3 +4,5 @@ include $(top_srcdir)/config/Shellcheck.am
 dist_sbin_SCRIPTS = fsck.zfs
 
 SUBSTFILES += $(dist_sbin_SCRIPTS)
+
+SHELLCHECK_OPTS = --enable=all

cmd/zed/Makefile.am

@@ -5,6 +5,7 @@ AM_CFLAGS += $(LIBUDEV_CFLAGS) $(LIBUUID_CFLAGS)
 
 SUBDIRS = zed.d
 SHELLCHECKDIRS = $(SUBDIRS)
+SHELLCHECK_OPTS = --enable=all
 
 sbin_PROGRAMS = zed
 

cmd/zed/zed.d/Makefile.am

@@ -10,6 +10,10 @@ dist_zedconf_DATA = \
 	zed-functions.sh \
 	zed.rc
 
+SHELLCHECKSCRIPTS = zed-functions.sh zed.rc
+SHELLCHECK_OPTS = --enable=all
+SHELLCHECK_SHELL = dash
+
 zedexecdir = $(zfsexecdir)/zed.d
 
 dist_zedexec_SCRIPTS = \

cmd/zed/zed.d/all-debug.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # Log all environment variables to ZED_DEBUG_LOG.
 #

cmd/zed/zed.d/all-syslog.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # Copyright (C) 2013-2014 Lawrence Livermore National Security, LLC.
 # Copyright (c) 2020 by Delphix. All rights reserved.

cmd/zed/zed.d/data-notify.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # Send notification in response to a DATA error.
 #

cmd/zed/zed.d/generic-notify.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # Send notification in response to a given zevent.
 #

cmd/zed/zed.d/history_event-zfs-list-cacher.sh.in

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # Track changes to enumerated pools for use in early-boot
 set -ef
@@ -72,7 +73,7 @@ PROPS="name,mountpoint,canmount,atime,relatime,devices,exec\
 ,org.openzfs.systemd:wanted-by,org.openzfs.systemd:required-by\
 ,org.openzfs.systemd:nofail,org.openzfs.systemd:ignore"
 
-"${ZFS}" list -H -t filesystem -o $PROPS -r "${ZEVENT_POOL}" > "${FSLIST_TMP}"
+"${ZFS}" list -H -t filesystem -o "${PROPS}" -r "${ZEVENT_POOL}" > "${FSLIST_TMP}"
 
 # Sort the output so that it is stable
 sort "${FSLIST_TMP}" -o "${FSLIST_TMP}"

cmd/zed/zed.d/resilver_finish-start-scrub.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 # resilver_finish-start-scrub.sh
 # Run a scrub after a resilver
 #

cmd/zed/zed.d/scrub_finish-notify.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # Send notification in response to a RESILVER_FINISH or SCRUB_FINISH.
 #

cmd/zed/zed.d/statechange-led.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # Turn off/on vdevs' enclosure fault LEDs when their pool's state changes.
 #
@@ -126,6 +127,9 @@ state_to_val()
 		ONLINE)
 			echo 0
 			;;
+		*)
+			echo "invalid state: $state"
+			;;
 	esac
 }
 
@@ -138,13 +142,11 @@ nvme_dev_to_slot()
 	dev="$1"
 
 	# Get the address "0000:01:00.0"
-	address=$(cat "/sys/class/block/$dev/device/address")
+	read -r address < "/sys/class/block/$dev/device/address"
 
-	# For each /sys/bus/pci/slots subdir that is an actual number
-	# (rather than weird directories like "1-3/").
-	# shellcheck disable=SC2010
-	for i in $(ls /sys/bus/pci/slots/ | grep -E "^[0-9]+$") ; do
-		this_address=$(cat "/sys/bus/pci/slots/$i/address")
+	find /sys/bus/pci/slots -regex '.*/[0-9]+/address$' | \
+		while read -r sys_addr; do
+			read -r this_address < "$sys_addr"
 
 			# The format of address is a little different between
 			# /sys/class/block/$dev/device/address and
@@ -154,7 +156,7 @@ nvme_dev_to_slot()
 			# this_address =     "0000:01:00"
 			#
 			if echo "$address" | grep -Eq ^"$this_address" ; then
-			echo "/sys/bus/pci/slots/$i"
+				echo "${sys_addr%/*}"
 				break
 			fi
 			done

cmd/zed/zed.d/statechange-notify.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # CDDL HEADER START
 #

cmd/zed/zed.d/trim_finish-notify.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+# shellcheck disable=SC2154
 #
 # Send notification in response to a TRIM_FINISH. The event
 # will be received for each vdev in the pool which was trimmed.

cmd/zed/zed.d/zed-functions.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-# shellcheck disable=SC2039
+# shellcheck disable=SC2154,SC3043
 # zed-functions.sh
 #
 # ZED helper functions for use in ZEDLETs
@@ -266,7 +266,7 @@ zed_notify_email()
         | sed   -e "s/@ADDRESS@/${ZED_EMAIL_ADDR}/g" \
                 -e "s/@SUBJECT@/${subject}/g")"
 
-    # shellcheck disable=SC2086
+    # shellcheck disable=SC2086,SC2248
     eval ${ZED_EMAIL_PROG} ${ZED_EMAIL_OPTS} < "${pathname}" >/dev/null 2>&1
     rv=$?
     if [ "${rv}" -ne 0 ]; then

cmd/zed/zed.d/zed.rc

@@ -3,6 +3,7 @@
 #
 # This file should be owned by root and permissioned 0600.
 ##
+# shellcheck disable=SC2034
 
 ##
 # Absolute path to the debug output file.

cmd/zpool/Makefile.am

@@ -5,6 +5,8 @@ AM_CFLAGS += $(LIBBLKID_CFLAGS) $(LIBUUID_CFLAGS)
 
 DEFAULT_INCLUDES += -I$(srcdir)
 
+SHELLCHECK_OPTS = --enable=all
+
 sbin_PROGRAMS = zpool
 
 zpool_SOURCES = \

cmd/zpool/zpool.d/dm-deps

@@ -9,6 +9,7 @@ if [ "$1" = "-h" ] ; then
 	exit
 fi
 
+# shellcheck disable=SC2154
 dev="$VDEV_PATH"
 
 # If the VDEV path is a symlink, resolve it to a real device

cmd/zpool/zpool.d/iostat

@@ -27,6 +27,7 @@ elif [ "$script" = "iostat-10s" ] ; then
 	brief="yes"
 fi
 
+# shellcheck disable=SC2154
 if [ -f "$VDEV_UPATH" ] ; then
 	# We're a file-based vdev, iostat doesn't work on us.  Do nothing.
 	exit
@@ -67,7 +68,7 @@ i=0
 for col in $cols ; do
 	i=$((i+1))
 	# Skip the first column since it's just the device name
-	if [ $i -eq 1 ]; then
+	if [ "$i" -eq 1 ]; then
 		continue
 	fi
 

cmd/zpool/zpool.d/lsblk

@@ -66,6 +66,7 @@ for i in $list ; do
 
 	# Special case: Looking up the size of a file-based vdev can't
 	# be done with lsblk.
+	# shellcheck disable=SC2154
 	if [ "$i" = "size" ] && [ -f "$VDEV_UPATH" ] ; then
 		size=$(du -h --apparent-size "$VDEV_UPATH" | cut -f 1)
 		echo "size=$size"

cmd/zpool/zpool.d/media

@@ -8,12 +8,14 @@ if [ "$1" = "-h" ] ; then
 	exit
 fi
 
+# shellcheck disable=SC2154
 if [ -b "$VDEV_UPATH" ]; then
 	device="${VDEV_UPATH##*/}"
 	read -r val 2>/dev/null < "/sys/block/$device/queue/rotational"
 	case "$val" in
 		0) MEDIA="ssd" ;;
 		1) MEDIA="hdd" ;;
+		*) MEDIA="invalid" ;;
 	esac
 
 	vpd_pg83="/sys/block/$device/device/vpd_pg83"

cmd/zpool/zpool.d/ses

@@ -24,6 +24,7 @@ else
 fi
 
 for i in $scripts ; do
+	# shellcheck disable=SC2154
 	if [ -z "$VDEV_ENC_SYSFS_PATH" ] ; then
 		echo "$i="
 		continue
@@ -52,7 +53,9 @@ for i in $scripts ; do
 	locate_led)
 		val=$(cat "$VDEV_ENC_SYSFS_PATH/locate" 2>/dev/null)
 		;;
+	*)
+		val=invalid
+		;;
 	esac
 	echo "$i=$val"
 done
-

cmd/zpool/zpool.d/smart

@@ -69,6 +69,7 @@ if [ "$1" = "-h" ] ; then
         exit
 fi
 
+# shellcheck disable=SC2154
 if [ -b "$VDEV_UPATH" ] && PATH="/usr/sbin:$PATH" command -v smartctl > /dev/null || [ -n "$samples" ] ; then
 	if [ -n "$samples" ] ; then
 		# cat a smartctl output text file instead of running smartctl

cmd/zpool/zpool.d/upath

@@ -4,4 +4,5 @@ if [ "$1" = "-h" ] ; then
 	exit
 fi
 
+# shellcheck disable=SC2154
 echo upath="$VDEV_UPATH"

cmd/zvol_wait/Makefile.am

@@ -1,3 +1,5 @@
 include $(top_srcdir)/config/Shellcheck.am
 
 dist_bin_SCRIPTS = zvol_wait
+
+SHELLCHECK_OPTS = --enable=all