`pfctl -a foo' exits 0; "foo" does not exist.
Let's implement what's acutally documented:
-a anchor
Apply flags -f, -F, and -s only to the rules in the specified
anchor.
Suggestions for a better warning?
OK?
Index: pfctl.c
===================================================================
RCS file: /cvs/src/sbin/pfctl/pfctl.c,v
retrieving revision 1.357
diff -u -p -r1.357 pfctl.c
--- pfctl.c 7 Sep 2018 19:56:07 -0000 1.357
+++ pfctl.c 8 Sep 2018 09:44:42 -0000
@@ -2500,6 +2500,10 @@ main(int argc, char *argv[])
errx(1, "pfctl: calloc");
memset(anchorname, 0, sizeof(anchorname));
if (anchoropt != NULL) {
+ if (rulesopt == NULL && clearopt == NULL && showopt == NULL) {
+ warnx("missing -f, -F or -s");
+ usage();
+ }
int len = strlen(anchoropt);
if (anchoropt[len - 1] == '*') {
