mancheck: accept lints, accept lint overrides

Reviewed-by: Richard Laager <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Tony Nguyen <[email protected]>
Reviewed-by: Ryan Moeller <[email protected]>
Signed-off-by: Ahelenia Ziemiańska <[email protected]>
Closes #12129

2 files changed, 45 insertions, 1 deletions

diff --git a/scripts/Makefile.am b/scripts/Makefile.am
index f338cdc39..6c59fd7d4 100644
--- a/scripts/Makefile.am
+++ b/scripts/Makefile.am
@@ -17,7 +17,8 @@ EXTRA_SCRIPTS = \
 	kmodtool \
 	make_gitrev.sh \
 	man-dates.sh \
-	paxcheck.sh
+	paxcheck.sh \
+	mancheck.sh
 
 EXTRA_DIST = \
 	cstyle.pl \
diff --git a/scripts/mancheck.sh b/scripts/mancheck.sh
new file mode 100755
index 000000000..a5b8b0d0a
--- /dev/null
+++ b/scripts/mancheck.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+#
+# Permission to use, copy, modify, and/or distribute this software for
+# any purpose with or without fee is hereby granted.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+# AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# shellcheck disable=SC2086
+
+if [ "$#" -eq 0 ]; then
+    echo "Usage: $0 manpage-directory..."
+    exit 1
+fi
+
+if ! command -v mandoc > /dev/null; then
+    echo "skipping mancheck because mandoc is not installed"
+    exit 0
+fi
+
+IFS="
+"
+
+files="$(find "$@" -type f -name '*[1-9]*' ! -name '*module-param*' ! -name 'zpool-features*' ! -name 'zfs-mount-generator*')" || exit 1
+
+add_excl="$(awk '
+    /^.\\" lint-ok:/ {
+        print "-e"
+        $1 = "mandoc:"
+        $2 = FILENAME ":[[:digit:]]+:[[:digit:]]+:"
+        print
+    }' $files)"
+
+# Redirect to file instead of 2>&1ing because mandoc flushes inconsistently(?) which tears lines
+# https://github.com/openzfs/zfs/pull/12129/checks?check_run_id=2701608671#step:5:3
+etmp="$(mktemp)"
+! { mandoc -Tlint $files 2>"$etmp"; cat "$etmp"; rm -f "$etmp"; } |
+    grep -vE -e 'mandoc: outdated mandoc.db' -e 'STYLE: referenced manual not found' $add_excl >&2