rc_is_env is now rc_env_bool and just works with boolean values.

ChangeLog

@@ -1,6 +1,11 @@
 # ChangeLog for Gentoo System Intialization ("rc") scripts
 # Copyright 1999-2007 Gentoo Foundation; Distributed under the GPLv2
 
+  26 Sep 2007; Roy Marples <uberlord@gentoo.org>:
+
+    rc_is_env is now rc_env_bool and just works with boolean values.
+    errno is set when it's not a boolean or does not exist.
+
   25 Sep 2007; Mike Frysinger <vapier@gentoo.org>:
 
     Skip consolefont setup when RC_TTY_NUMBER is set to 0.

src/fstabinfo.c

@@ -181,7 +181,7 @@ int fstabinfo (int argc, char **argv)
 		}
 
 		/* No point in outputting if quiet */
-		if (rc_is_env ("RC_QUIET", "yes"))
+		if (rc_env_bool ("RC_QUIET"))
 			continue;
 
 		switch (output) {

src/librc-misc.c

@@ -57,20 +57,33 @@ char *rc_xstrdup (const char *str)
 }
 librc_hidden_def(rc_xstrdup)
 
-bool rc_is_env (const char *var, const char *val)
+bool rc_env_bool (const char *var)
 {
 	char *v;
 
 	if (! var)
 		return (false);
 
-	v = getenv (var);
-	if (! v)
-		return (val == NULL ? true : false);
+	if (! (v = getenv (var))) {
+		errno = ENOENT;
+		return (false);
+	}
 
-	return (strcasecmp (v, val) == 0 ? true : false);
+	if (strcasecmp (var, "true") == 0 ||
+		strcasecmp (var, "y") == 0 ||
+		strcasecmp (var, "yes") == 0 ||
+		strcasecmp (var, "1") == 0)
+		return (true);
+
+	if (strcasecmp (var, "false") != 0 &&
+		strcasecmp (var, "n") != 0 &&
+		strcasecmp (var, "no") != 0 &&
+		strcasecmp (var, "0") != 0)
+		errno = EINVAL;
+
+	return (false);
 }
-librc_hidden_def(rc_is_env)
+librc_hidden_def(rc_env_bool)
 
 char *rc_strcatpaths (const char *path1, const char *paths, ...)
 {

src/librc.h

@@ -50,6 +50,7 @@
 #define librc_hidden_def(x) hidden_def(x)
 
 librc_hidden_proto(rc_allow_plug)
+librc_hidden_proto(rc_env_bool)
 librc_hidden_proto(rc_exists)
 librc_hidden_proto(rc_filter_env)
 librc_hidden_proto(rc_find_pids)
@@ -64,7 +65,6 @@ librc_hidden_proto(rc_get_runlevel)
 librc_hidden_proto(rc_get_runlevels)
 librc_hidden_proto(rc_get_service_option)
 librc_hidden_proto(rc_is_dir)
-librc_hidden_proto(rc_is_env)
 librc_hidden_proto(rc_is_exec)
 librc_hidden_proto(rc_is_file)
 librc_hidden_proto(rc_is_link)

src/mountinfo.c

@@ -364,7 +364,7 @@ int mountinfo (int argc, char **argv)
 			continue;
 		if (skip_point_regex && regexec (skip_point_regex, n, 0, NULL, 0) == 0)
 			continue;
-		if (! rc_is_env ("RC_QUIET", "yes"))
+		if (rc_env_bool ("RC_QUIET"))
 			printf ("%s\n", n);
 		result = EXIT_SUCCESS;
 	}

src/rc.c

@@ -457,7 +457,7 @@ static bool want_interactive (void)
 		strcmp (PREVLEVEL, "1") != 0)
 		return (false);
 
-	if (! rc_is_env ("RC_INTERACTIVE", "yes"))
+	if (! rc_env_bool ("RC_INTERACTIVE"))
 		return (false);
 
 	c = read_key (false);
@@ -919,7 +919,7 @@ int main (int argc, char **argv)
 					ecolor (ecolor_good), uts.sysname, ecolor (ecolor_bracket),
 					ecolor (ecolor_normal));
 
-			if (rc_is_env ("RC_INTERACTIVE", "yes"))
+			if (rc_env_bool ("RC_INTERACTIVE"))
 				printf ("Press %sI%s to enter interactive boot mode\n\n",
 						ecolor (ecolor_good), ecolor (ecolor_normal));
 
@@ -1056,7 +1056,7 @@ int main (int argc, char **argv)
 	if (newlevel && strcmp (newlevel, bootlevel) == 0 &&
 		(strcmp (runlevel, RC_LEVEL_SINGLE) == 0 ||
 		 strcmp (runlevel, RC_LEVEL_SYSINIT) == 0) &&
-		rc_is_env ("RC_COLDPLUG", "yes"))
+		rc_env_bool ("RC_COLDPLUG"))
 	{
 #if defined(__DragonFly__) || defined(__FreeBSD__)
 		/* The net interfaces are easy - they're all in net /dev/net :) */
@@ -1186,7 +1186,7 @@ int main (int argc, char **argv)
 		/* We always stop the service when in these runlevels */
 		if (going_down) {
 			pid_t pid = rc_stop_service (service);
-			if (pid > 0 && ! rc_is_env ("RC_PARALLEL", "yes"))
+			if (pid > 0 && ! rc_env_bool ("RC_PARALLEL"))
 				rc_waitpid (pid);
 			continue;
 		}
@@ -1251,7 +1251,7 @@ int main (int argc, char **argv)
 		/* After all that we can finally stop the blighter! */
 		if (! found) {
 			pid_t pid = rc_stop_service (service);
-			if (pid > 0 && ! rc_is_env ("RC_PARALLEL", "yes"))
+			if (pid > 0 && ! rc_env_bool ("RC_PARALLEL"))
 				rc_waitpid (pid);
 		}
 	}
@@ -1352,7 +1352,7 @@ interactive_option:
 			if ((pid = rc_start_service (service)))
 				add_pid (pid);
 
-			if (! rc_is_env ("RC_PARALLEL", "yes")) {
+			if (! rc_env_bool ("RC_PARALLEL")) {
 				rc_waitpid (pid);
 				remove_pid (pid);
 			}

src/rc.h

@@ -367,11 +367,12 @@ char *rc_xstrdup (const char *str);
  * @param paths NULL terminated list of paths to add
  * @return pointer to the new path */
 char *rc_strcatpaths (const char *path1, const char *paths, ...) SENTINEL;
-/*! Check if an environment variable matches the given value
+/*! Check if an environment variable is a boolean and return it's value.
+ * If variable is not a boolean then we set errno to be ENOENT when it does
+ * not exist or EINVAL if it's not a boolean.
  * @param variable to check
- * @param value it should be
- * @return true if it matches */
-bool rc_is_env (const char *variable, const char *value);
+ * @return true if it matches true, yes or 1, false if otherwise. */
+bool rc_env_bool (const char *variable);
 /*! Check if the file exists or not
  * @param pathname to check
  * @return true if it exists, otherwise false */

src/runscript.c

@@ -562,7 +562,7 @@ static void svc_start (bool deps)
 	rc_plugin_run (rc_hook_service_start_in, applet);
 	hook_out = rc_hook_service_start_out;
 
-	if (rc_is_env ("IN_HOTPLUG", "1") || in_background) {
+	if (rc_env_bool ("IN_HOTPLUG") || in_background) {
 		if (! rc_service_state (service, rc_service_inactive) &&
 			! rc_service_state (service, rc_service_stopped))
 			exit (EXIT_FAILURE);
@@ -584,7 +584,7 @@ static void svc_start (bool deps)
 
 	make_exclusive (service);
 
-	if (rc_is_env ("RC_DEPEND_STRICT", "yes"))
+	if (rc_env_bool ("RC_DEPEND_STRICT"))
 		depoptions |= RC_DEP_STRICT;
 
 	if (rc_runlevel_starting ())
@@ -630,7 +630,7 @@ static void svc_start (bool deps)
 			STRLIST_FOREACH (use_services, svc, i)
 				if (rc_service_state (svc, rc_service_stopped)) {
 					pid_t pid = rc_start_service (svc);
-					if (! rc_is_env ("RC_PARALLEL", "yes"))
+					if (! rc_env_bool ("RC_PARALLEL"))
 						rc_waitpid (pid);
 				}
 		}
@@ -802,7 +802,7 @@ static void svc_stop (bool deps)
 		rc_service_state (service, rc_service_failed))
 		exit (EXIT_FAILURE);
 
-	if (rc_is_env ("IN_HOTPLUG", "1") || in_background)
+	if (rc_env_bool ("IN_HOTPLUG") || in_background)
 		if (! rc_service_state (service, rc_service_started) && 
 			! rc_service_state (service, rc_service_inactive))
 			exit (EXIT_FAILURE);
@@ -827,7 +827,7 @@ static void svc_stop (bool deps)
 		char *svc;
 		int i;
 
-		if (rc_is_env ("RC_DEPEND_STRICT", "yes"))
+		if (rc_env_bool ("RC_DEPEND_STRICT"))
 			depoptions |= RC_DEP_STRICT;
 
 		if (rc_runlevel_stopping ())
@@ -857,7 +857,7 @@ static void svc_stop (bool deps)
 					rc_service_state (svc, rc_service_inactive))
 				{
 					pid_t pid = rc_stop_service (svc);
-					if (! rc_is_env ("RC_PARALLEL", "yes"))
+					if (! rc_env_bool ("RC_PARALLEL"))
 						rc_waitpid (pid);
 					rc_strlist_add (&tmplist, svc);
 				}
@@ -1088,7 +1088,7 @@ int runscript (int argc, char **argv)
 	setenv ("RC_RUNSCRIPT_PID", pid, 1);
 
 	/* eprefix is kinda klunky, but it works for our purposes */
-	if (rc_is_env ("RC_PARALLEL", "yes")) {
+	if (rc_env_bool ("RC_PARALLEL")) {
 		int l = 0;
 		int ll;
 
@@ -1138,13 +1138,13 @@ int runscript (int argc, char **argv)
 	/* Save the IN_BACKGROUND env flag so it's ONLY passed to the service
 	   that is being called and not any dependents */
 	if (getenv ("IN_BACKGROUND")) {
-		in_background = rc_is_env ("IN_BACKGROUND", "true");
+		in_background = rc_env_bool ("IN_BACKGROUND");
 		ibsave = rc_xstrdup (getenv ("IN_BACKGROUND"));
 		unsetenv ("IN_BACKGROUND");
 	}
 
-	if (rc_is_env ("IN_HOTPLUG", "1")) {
-		if (! rc_is_env ("RC_HOTPLUG", "yes") || ! rc_allow_plug (applet))
+	if (rc_env_bool ("IN_HOTPLUG")) {
+		if (! rc_env_bool ("RC_HOTPLUG") || ! rc_allow_plug (applet))
 			eerrorx ("%s: not allowed to be hotplugged", applet);
 	}
 
@@ -1196,7 +1196,7 @@ int runscript (int argc, char **argv)
 				   strcmp (optarg, "iprovide") == 0) {
 			int depoptions = RC_DEP_TRACE;
 
-			if (rc_is_env ("RC_DEPEND_STRICT", "yes"))
+			if (rc_env_bool ("RC_DEPEND_STRICT"))
 				depoptions |= RC_DEP_STRICT;
 			
 			if (! deptree && ((deptree = rc_load_deptree ()) == NULL))

src/start-stop-daemon.c

@@ -684,7 +684,7 @@ int start_stop_daemon (int argc, char **argv)
 			case_RC_COMMON_GETOPT
 		}
 
-	quiet = rc_is_env ("RC_QUIET", "yes");
+	quiet = rc_env_bool ("RC_QUIET");
 	verbose = rc_is_env ("RC_VERBOSE", "yes");
 
 	/* Allow start-stop-daemon --signal HUP --exec /usr/sbin/dnsmasq