param: New "all" counterpart to "none" for vsl_mask

bin/varnishd/mgt/mgt_param_tweak.c

@@ -680,6 +680,8 @@ tweak_generic_bits(struct vsb *vsb, const struct parspec *par, const char *arg,
 	if (arg != NULL && arg != JSON_FMT) {
 		if (sign == '+' && !strcmp(arg, "none"))
 			bit_clear(p, l);
+		else if (sign == '-' && !strcmp(arg, "all"))
+			bit_clear(p, l);
 		else
 			return (bit_tweak(vsb, p, l, arg, tags, desc, sign));
 	} else {
@@ -693,7 +695,7 @@ tweak_generic_bits(struct vsb *vsb, const struct parspec *par, const char *arg,
 			}
 		}
 		if (*s == '\0')
-			VSB_cat(vsb, sign == '+' ? "none" : "(all enabled)");
+			VSB_cat(vsb, sign == '+' ? "none" : "all");
 		if (arg == JSON_FMT)
 			VSB_putc(vsb, '"');
 	}

bin/varnishtest/tests/c00054.vtc

@@ -9,6 +9,7 @@ varnish v1 -cliok "param.set vsl_mask +WorkThread,+TTL,+Hash"
 varnish v1 -cliok "param.show vsl_mask"
 
 varnish v1 -cliexpect {"value": "none"} "param.set -j feature none"
+varnish v1 -cliexpect {"value": "all"} "param.set -j vsl_mask all"
 
 varnish v1 -clierr 106 "param.set vsl_mask FooBar"
 varnish v1 -clierr 106 "param.set vsl_mask -FooBar"

include/tbl/params.h

@@ -1881,6 +1881,7 @@ PARAM_BITS(
 	"-WorkThread",
 	/* descr */
 	"Mask individual VSL messages from being logged.\n"
+	"\tall\tEnable all tags\n"
 	"\tdefault\tSet default value\n"
 	"\nUse +/- prefix in front of VSL tag name to unmask/mask "
 	"individual VSL messages.")