[kvm-unit-tests RFC PATCH 17/17] shellcheck: Suppress various messages

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Various info and warnings are suppressed here, where circumstances
(commented) warrant.

Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx>
---
 run_tests.sh            | 3 +++
 scripts/arch-run.bash   | 9 +++++++++
 scripts/mkstandalone.sh | 2 ++
 scripts/runtime.bash    | 2 ++
 4 files changed, 16 insertions(+)

diff --git a/run_tests.sh b/run_tests.sh
index 938bb8edf..152323ffc 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -45,6 +45,9 @@ fi
 only_tests=""
 list_tests=""
 args=$(getopt -u -o ag:htj:vl -l all,group:,help,tap13,parallel:,verbose,list,probe-maxsmp -- "$@")
+# Shellcheck likes to test commands directly rather than with $? but sometimes they
+# are too long to put in the same test.
+# shellcheck disable=SC2181
 [ $? -ne 0 ] && exit 2;
 set -- $args;
 while [ $# -gt 0 ]; do
diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
index ed440b4aa..fe8785cfd 100644
--- a/scripts/arch-run.bash
+++ b/scripts/arch-run.bash
@@ -44,6 +44,8 @@ run_qemu ()
 	if [ "$errors" ]; then
 		sig=$(grep 'terminating on signal' <<<"$errors")
 		if [ "$sig" ]; then
+			# This is too complex for ${var/search/replace}
+			# shellcheck disable=SC2001
 			sig=$(sed 's/.*terminating on signal \([0-9][0-9]*\).*/\1/' <<<"$sig")
 		fi
 	fi
@@ -174,9 +176,12 @@ run_migration ()
 
 	# Holding both ends of the input fifo open prevents opens from
 	# blocking and readers getting EOF when a writer closes it.
+	# These fds appear to be unused to shellcheck so quieten the warning.
 	mkfifo ${src_infifo}
 	mkfifo ${dst_infifo}
+	# shellcheck disable=SC2034
 	exec {src_infifo_fd}<>${src_infifo}
+	# shellcheck disable=SC2034
 	exec {dst_infifo_fd}<>${dst_infifo}
 
 	"${migcmdline[@]}" \
@@ -184,6 +189,8 @@ run_migration ()
 		-mon chardev=mon,mode=control \
 		< ${src_infifo} > ${src_outfifo} &
 	live_pid=$!
+	# SC complains about useless cat but I prefer it over redirect here.
+	# shellcheck disable=SC2002
 	cat ${src_outfifo} | tee ${src_out} | filter_quiet_msgs &
 
 	# Start the first destination QEMU machine in advance of the test
@@ -224,6 +231,8 @@ do_migration ()
 		-mon chardev=mon,mode=control -incoming unix:${dst_incoming} \
 		< ${dst_infifo} > ${dst_outfifo} &
 	incoming_pid=$!
+	# SC complains about useless cat but I prefer it over redirect here.
+	# shellcheck disable=SC2002
 	cat ${dst_outfifo} | tee ${dst_out} | filter_quiet_msgs &
 
 	# The test must prompt the user to migrate, so wait for the
diff --git a/scripts/mkstandalone.sh b/scripts/mkstandalone.sh
index 756647f29..2318a85f0 100755
--- a/scripts/mkstandalone.sh
+++ b/scripts/mkstandalone.sh
@@ -65,6 +65,8 @@ generate_test ()
 	fi
 
 	temp_file bin "$kernel"
+	# Don't want to expand $bin but print it as-is.
+	# shellcheck disable=SC2016
 	args[3]='$bin'
 
 	(echo "#!/usr/bin/env bash"
diff --git a/scripts/runtime.bash b/scripts/runtime.bash
index 3b76aec9e..c87613b96 100644
--- a/scripts/runtime.bash
+++ b/scripts/runtime.bash
@@ -137,6 +137,8 @@ function run()
     # the check line can contain multiple files to check separated by a space
     # but each check parameter needs to be of the form <path>=<value>
     if [ "$check" ]; then
+        # There is no globbing allowed in the check parameter.
+        # shellcheck disable=SC2206
         check=($check)
         for check_param in "${check[@]}"; do
             path=${check_param%%=*}
-- 
2.43.0





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