btrfs-progs: tests: output nullb error/warning message to stderr

naota · kdave · commit 050fe8047da6 · 2025-10-16T19:47:01.000+02:00
Outputting these messages to stdout can compromise other functions'
output.  Instead, output them to stderr to keep the results clean.

Reviewed-by: Qu Wenruo &lt;wqu@suse.com&gt;
Signed-off-by: Naohiro Aota &lt;naohiro.aota@wdc.com&gt;
Signed-off-by: David Sterba &lt;dsterba@suse.com&gt;
diff --git a/tests/nullb b/tests/nullb
@@ -34,12 +34,12 @@ SYSFS='/sys/kernel/config/nullb'
 # setup
 
 function _error() {
-	echo "ERROR: $@"
+	echo "ERROR: $@" 1>&2
 	exit 1
 }
 
 function _warn() {
-	echo "WARNING: $@"
+	echo "WARNING: $@" 1>&2
 }
 
 function _msg() {

Original file line number	Diff line number	Diff line change
`@@ -34,12 +34,12 @@ SYSFS='/sys/kernel/config/nullb'`
`34`	`34`	`# setup`
`35`	`35`
`36`	`36`	`function _error() {`
`37`		`- echo "ERROR: $@"`
	`37`	`+ echo "ERROR: $@" 1>&2`
`38`	`38`	`exit 1`
`39`	`39`	`}`
`40`	`40`
`41`	`41`	`function _warn() {`
`42`		`- echo "WARNING: $@"`
	`42`	`+ echo "WARNING: $@" 1>&2`
`43`	`43`	`}`
`44`	`44`
`45`	`45`	`function _msg() {`