[PATCH] devtools: forbid writing to standard output streams

[David Marchand]

No output on stdout or stderr!
Drivers and libraries must use the logging framework.

Signed-off-by: David Marchand <david.marchand at redhat.com>
---
 devtools/checkpatches.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/devtools/checkpatches.sh b/devtools/checkpatches.sh
index 10d1bf490b..c9e466f736 100755
--- a/devtools/checkpatches.sh
+++ b/devtools/checkpatches.sh
@@ -61,6 +61,14 @@ check_forbidden_additions() { # <patch>
 		-f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
 		"$1" || res=1
 
+	# no output on stdout or stderr
+	awk -v FOLDERS="lib drivers" \
+		-v EXPRESSIONS="\\\<printf\\\> \\\<fprintf\\\(stdout, \\\<fprintf\\\(stderr," \
+		-v RET_ON_FAIL=1 \
+		-v MESSAGE='Writing to stdout or stderr' \
+		-f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
+		"$1" || res=1
+
 	# refrain from new additions of rte_panic() and rte_exit()
 	# multiple folders and expressions are separated by spaces
 	awk -v FOLDERS="lib drivers" \
-- 
2.43.0