Ubuntu 22.04 integration: ShellCheck

- Add new SC2312 global exclude. ``` Consider invoking this command separately to avoid masking its return value (or use '|| true' to ignore). [SC2312] ``` - Correct errors detected by new ShellCheck version. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #14148
openzfs · Nov 18, 2022 · a508796 · a508796
1 parent c3b6fd3
commit a508796
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Showing 10 changed files with 95 additions and 94 deletions.
diff --git a/autogen.sh b/autogen.sh
@@ -16,7 +16,7 @@ automake --version | awk '{print $NF; exit}' | (
 			dir="${dir%/Makefile.am}"
 			grep -q '%[CD]%' "$dir/Makefile.am" || continue
 
-			reldir="${dir#$root}"
+			reldir="${dir#"$root"}"
 			reldir="${reldir#/}"
 
 			canon_reldir="$(printf '%s' "$reldir" | tr -C 'a-zA-Z0-9@_' '_')"

diff --git a/config/Shellcheck.am b/config/Shellcheck.am
@@ -3,6 +3,7 @@
 # ShellCheck can't follow non-constant source. Use a directive to specify location. [SC1090]
 # Not following: a was not specified as input (see shellcheck -x). [SC1091]
 # Prefer putting braces around variable references even when not strictly required. [SC2250]
+# Consider invoking this command separately to avoid masking its return value (or use '|| true' to ignore). [SC2312]
 # In POSIX sh, 'local' is undefined. [SC2039] # older ShellCheck versions
 # In POSIX sh, 'local' is undefined. [SC3043] # newer ShellCheck versions
 
@@ -17,7 +18,7 @@ PHONY += shellcheck
 _STGT = $(subst ^,/,$(subst shellcheck-here-,,$@))
 shellcheck-here-%:
 if HAVE_SHELLCHECK
-	shellcheck --format=gcc --enable=all --exclude=SC1090,SC1091,SC2039,SC2250,SC3043 $$([ -n "$(SHELLCHECK_SHELL)" ] && echo "--shell=$(SHELLCHECK_SHELL)") "$$([ -e "$(_STGT)" ] || echo "$(srcdir)/")$(_STGT)"
+	shellcheck --format=gcc --enable=all --exclude=SC1090,SC1091,SC2039,SC2250,SC2312,SC3043 $$([ -n "$(SHELLCHECK_SHELL)" ] && echo "--shell=$(SHELLCHECK_SHELL)") "$$([ -e "$(_STGT)" ] || echo "$(srcdir)/")$(_STGT)"
 else
 	@echo "skipping shellcheck of" $(_STGT) "because shellcheck is not installed"
 endif

diff --git a/contrib/bash_completion.d/zfs.in b/contrib/bash_completion.d/zfs.in
@@ -63,11 +63,11 @@ __zfs_list_filesystems()
 __zfs_match_snapshot()
 {
     local base_dataset="${cur%@*}"
-    if [ "$base_dataset" != "$cur" ]
+    if [[ "$base_dataset" != "$cur" ]]
     then
         $__ZFS_CMD list -H -o name -s name -t snapshot -d 1 "$base_dataset"
     else
-        if [ "$cur" != "" ] && __zfs_list_datasets "$cur" &> /dev/null
+        if [[ "$cur" != "" ]] && __zfs_list_datasets "$cur" &> /dev/null
         then
             $__ZFS_CMD list -H -o name -s name -t filesystem,volume -r "$cur" | tail -n +2
             # We output the base dataset name even though we might be
@@ -104,7 +104,7 @@ __zfs_match_snapshot()
 __zfs_match_snapshot_or_bookmark()
 {
     local base_dataset="${cur%[#@]*}"
-    if [ "$base_dataset" != "$cur" ]
+    if [[ "$base_dataset" != "$cur" ]]
     then
         if [[ $cur == *@* ]]
         then
@@ -114,7 +114,7 @@ __zfs_match_snapshot_or_bookmark()
         fi
     else
         $__ZFS_CMD list -H -o name -s name -t filesystem,volume
-        if [ -e "$cur" ] && $__ZFS_CMD list -H -o name -s name -t filesystem,volume "$cur" &> /dev/null
+        if [[ -e "$cur" ]] && $__ZFS_CMD list -H -o name -s name -t filesystem,volume "$cur" &> /dev/null
         then
             echo "$cur@"
             echo "$cur#"
@@ -126,10 +126,10 @@ __zfs_match_multiple_snapshots()
 {
     local existing_opts
     existing_opts="$(expr "$cur" : '\(.*\)[%,]')"
-    if [ -e "$existing_opts" ]
+    if [[ -e "$existing_opts" ]]
     then
         local base_dataset="${cur%@*}"
-        if [ "$base_dataset" != "$cur" ]
+        if [[ "$base_dataset" != "$cur" ]]
         then
             local cur="${cur##*,}"
             if [[ $cur =~ ^%|%.*% ]]
@@ -199,7 +199,7 @@ __zfs_complete_multiple_options()
 
     mapfile -t COMPREPLY < <(compgen -W "$options" -- "${cur##*,}")
     existing_opts=$(expr "$cur" : '\(.*,\)')
-    if [ -n "$existing_opts" ]
+    if [[ -n "$existing_opts" ]]
     then
         COMPREPLY=( "${COMPREPLY[@]/#/${existing_opts}}" )
     fi

diff --git a/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in b/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in
@@ -3,7 +3,7 @@
 get_devtype() {
   local typ
   typ=$(udevadm info --query=property --name="$1" | sed -n 's|^ID_FS_TYPE=||p')
-  if [ -z "$typ" ] ; then
+  if [[ -z "$typ" ]] ; then
      typ=$(blkid -c /dev/null "$1" -o value -s TYPE)
   fi
   echo "$typ"
@@ -22,7 +22,7 @@ get_pool_devices() {
   else
     awk -F '\t' '/\t\/dev/ { print $2 }' "$poolconfigtemp" | \
     while read -r pooldev ; do
-        if [ -e "$pooldev" ] ; then
+        if [[ -e "$pooldev" ]] ; then
           resolved="$(readlink -f "$pooldev")"
           dinfo "zfsexpandknowledge: pool $1 has device $pooldev (which resolves to $resolved)"
           echo "$resolved"
@@ -38,15 +38,15 @@ find_zfs_block_devices() {
     local fstype
     local _
     numfields="$(awk '{print NF; exit}' /proc/self/mountinfo)"
-    if [ "$numfields" = "10" ] ; then
+    if [[ "$numfields" = "10" ]] ; then
         fields="_ _ _ _ mp _ _ fstype dev _"
     else
         fields="_ _ _ _ mp _ _ _ fstype dev _"
     fi
     # shellcheck disable=SC2086
     while read -r ${fields?} ; do
-       [ "$fstype" = "zfs" ] || continue
-       [ "$mp" = "$1" ] && get_pool_devices "${dev%%/*}"
+       [[ "$fstype" = "zfs" ]] || continue
+       [[ "$mp" = "$1" ]] && get_pool_devices "${dev%%/*}"
     done < /proc/self/mountinfo
 }
 
@@ -73,7 +73,7 @@ check() {
     local _depdevtype
 
 # shellcheck disable=SC2154
-if [ -n "$hostonly" ]; then
+if [[ -n "$hostonly" ]]; then
 
     for mp in \
         "/" \
@@ -92,17 +92,17 @@ if [ -n "$hostonly" ]; then
         mp=$(readlink -f "$mp")
         mountpoint "$mp" >/dev/null 2>&1 || continue
         blockdevs=$(find_zfs_block_devices "$mp")
-        if [ -z "$blockdevs" ] ; then continue ; fi
+        if [[ -z "$blockdevs" ]] ; then continue ; fi
         dinfo "zfsexpandknowledge: block devices backing ZFS dataset $mp: ${blockdevs//$'\n'/ }"
         for dev in $blockdevs
         do
             array_contains "$dev" "${host_devs[@]}" || host_devs+=("$dev")
             fstype=$(get_devtype "$dev")
             host_fs_types["$dev"]="$fstype"
             majmin=$(get_maj_min "$dev")
-            if [ -d "/sys/dev/block/$majmin/slaves" ] ; then
+            if [[ -d "/sys/dev/block/$majmin/slaves" ]] ; then
                 for _depdev in "/sys/dev/block/$majmin/slaves"/*; do
-                    [ -f "$_depdev/dev" ] || continue
+                    [[ -f "$_depdev/dev" ]] || continue
                     _depdev="/dev/${_depdev##*/}"
                     _depdevname=$(udevadm info --query=property --name="$_depdev" | sed -n 's|^DEVNAME=||p')
                     _depdevtype=$(get_devtype "$_depdevname")

diff --git a/contrib/dracut/90zfs/module-setup.sh.in b/contrib/dracut/90zfs/module-setup.sh.in
@@ -3,7 +3,7 @@
 
 check() {
 	# We depend on udev-rules being loaded
-	[ "${1}" = "-d" ] && return 0
+	[[ "${1}" = "-d" ]] && return 0
 
 	# Verify the zfs tool chain
 	for tool in "zgenhostid" "zpool" "zfs" "mount.zfs"; do
@@ -50,7 +50,7 @@ install() {
 	fi
 
 	inst_hook cmdline 95 "${moddir}/parse-zfs.sh"
-	if [ -n "${systemdutildir}" ]; then
+	if [[ -n "${systemdutildir}" ]]; then
 		inst_script "${moddir}/zfs-generator.sh" "${systemdutildir}/system-generators/dracut-zfs-generator"
 	fi
 	inst_hook pre-mount 90 "${moddir}/zfs-load-key.sh"
@@ -68,7 +68,7 @@ install() {
 
 	# Synchronize initramfs and system hostid
 	if ! inst_simple -H @sysconfdir@/hostid; then
-		if HOSTID="$(hostid 2>/dev/null)" && [ "${HOSTID}" != "00000000" ]; then
+		if HOSTID="$(hostid 2>/dev/null)" && [[ "${HOSTID}" != "00000000" ]]; then
 			zgenhostid -o "${initdir}@sysconfdir@/hostid" "${HOSTID}"
 			mark_hostonly @sysconfdir@/hostid
 		fi

diff --git a/contrib/initramfs/scripts/zfs b/contrib/initramfs/scripts/zfs
@@ -640,8 +640,8 @@ setup_snapshot_booting()
 			#       rpool/ROOT/debian/boot@snap2	=> rpool/ROOT/debian_snap2/boot
 			#       rpool/ROOT/debian/usr@snap2	=> rpool/ROOT/debian_snap2/usr
 			#       rpool/ROOT/debian/var@snap2	=> rpool/ROOT/debian_snap2/var
-			subfs="${s##$rootfs}"
-			subfs="${subfs%%@$snapname}"
+			subfs="${s##"$rootfs"}"
+			subfs="${subfs%%@"$snapname"}"
 
 			destfs="${rootfs}_${snapname}" # base fs.
 			[ -n "$subfs" ] && destfs="${destfs}$subfs" # + sub fs.

diff --git a/scripts/common.sh.in b/scripts/common.sh.in
@@ -8,15 +8,15 @@ export ZTS_DIR=
 export SCRIPT_DIR=
 
 # General commands
-export ZDB=${ZDB:-$SBIN_DIR/zdb}
-export ZFS=${ZFS:-$SBIN_DIR/zfs}
-export ZPOOL=${ZPOOL:-$SBIN_DIR/zpool}
-export ZTEST=${ZTEST:-$SBIN_DIR/ztest}
-export ZFS_SH=${ZFS_SH:-$SCRIPT_DIR/zfs.sh}
+export ZDB="${ZDB:-$SBIN_DIR/zdb}"
+export ZFS="${ZFS:-$SBIN_DIR/zfs}"
+export ZPOOL="${ZPOOL:-$SBIN_DIR/zpool}"
+export ZTEST="${ZTEST:-$SBIN_DIR/ztest}"
+export ZFS_SH="${ZFS_SH:-$SCRIPT_DIR/zfs.sh}"
 
 # Test Suite
-export RUNFILE_DIR=${RUNFILE_DIR:-$ZTS_DIR/runfiles}
-export TEST_RUNNER=${TEST_RUNNER:-$ZTS_DIR/test-runner/bin/test-runner.py}
-export ZTS_REPORT=${ZTS_REPORT:-$ZTS_DIR/test-runner/bin/zts-report.py}
-export STF_TOOLS=${STF_TOOLS:-$ZTS_DIR/test-runner}
-export STF_SUITE=${STF_SUITE:-$ZTS_DIR/zfs-tests}
+export RUNFILE_DIR="${RUNFILE_DIR:-$ZTS_DIR/runfiles}"
+export TEST_RUNNER="${TEST_RUNNER:-$ZTS_DIR/test-runner/bin/test-runner.py}"
+export ZTS_REPORT="${ZTS_REPORT:-$ZTS_DIR/test-runner/bin/zts-report.py}"
+export STF_TOOLS="${STF_TOOLS:-$ZTS_DIR/test-runner}"
+export STF_SUITE="${STF_SUITE:-$ZTS_DIR/zfs-tests}"