[PATCH v3 25/29] libmultipath: introduce symbolic values for logsink

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From: Martin Wilck <mwilck@xxxxxxxx>

Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
 libmultipath/debug.c     |  4 ++--
 libmultipath/debug.h     |  6 ++++++
 libmultipath/devmapper.c |  4 ++--
 multipath/main.c         |  4 ++--
 multipathd/main.c        | 17 ++++++++---------
 tests/globals.c          |  3 ++-
 tests/hwtable.c          |  2 +-
 7 files changed, 23 insertions(+), 17 deletions(-)

diff --git a/libmultipath/debug.c b/libmultipath/debug.c
index a1713b9..f9b7755 100644
--- a/libmultipath/debug.c
+++ b/libmultipath/debug.c
@@ -25,8 +25,8 @@ void dlog (int sink, int prio, const char * fmt, ...)
 	va_start(ap, fmt);
 
 	if (prio <= libmp_verbosity) {
-		if (sink < 1) {
-			if (sink == 0) {
+		if (sink != LOGSINK_SYSLOG) {
+			if (sink == LOGSINK_STDERR_WITH_TIME) {
 				time_t t = time(NULL);
 				struct tm *tb = localtime(&t);
 				char buff[16];
diff --git a/libmultipath/debug.h b/libmultipath/debug.h
index 1f3bc8b..b6ce70a 100644
--- a/libmultipath/debug.h
+++ b/libmultipath/debug.h
@@ -12,3 +12,9 @@ extern int libmp_verbosity;
 
 #define condlog(prio, fmt, args...) \
 	dlog(logsink, prio, fmt "\n", ##args)
+
+enum {
+	LOGSINK_STDERR_WITH_TIME = 0,
+	LOGSINK_STDERR_WITHOUT_TIME = -1,
+	LOGSINK_SYSLOG = 1,
+};
diff --git a/libmultipath/devmapper.c b/libmultipath/devmapper.c
index dfe95d2..f8b180e 100644
--- a/libmultipath/devmapper.c
+++ b/libmultipath/devmapper.c
@@ -104,8 +104,8 @@ dm_write_log (int level, const char *file, int line, const char *f, ...)
 		return;
 
 	va_start(ap, f);
-	if (logsink < 1) {
-		if (logsink == 0) {
+	if (logsink != LOGSINK_SYSLOG) {
+		if (logsink == LOGSINK_STDERR_WITH_TIME) {
 			time_t t = time(NULL);
 			struct tm *tb = localtime(&t);
 			char buff[16];
diff --git a/multipath/main.c b/multipath/main.c
index 371be2a..c94bb26 100644
--- a/multipath/main.c
+++ b/multipath/main.c
@@ -816,7 +816,7 @@ main (int argc, char *argv[])
 	libmultipath_init();
 	if (atexit(dm_lib_exit) || atexit(libmultipath_exit))
 		condlog(1, "failed to register cleanup handler for libmultipath: %m");
-	logsink = 0;
+	logsink = LOGSINK_STDERR_WITH_TIME;
 	if (init_config(DEFAULT_CONFIGFILE))
 		exit(RTVL_FAIL);
 	if (atexit(uninit_config))
@@ -967,7 +967,7 @@ main (int argc, char *argv[])
 	if (dev_type == DEV_UEVENT) {
 		openlog("multipath", 0, LOG_DAEMON);
 		setlogmask(LOG_UPTO(libmp_verbosity + 3));
-		logsink = 1;
+		logsink = LOGSINK_SYSLOG;
 	}
 
 	set_max_fds(conf->max_fds);
diff --git a/multipathd/main.c b/multipathd/main.c
index ba25751..867f0f8 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -2780,7 +2780,7 @@ handle_signals(bool nonfatal)
 	}
 	if (log_reset_sig) {
 		condlog(2, "reset log (signal)");
-		if (logsink == 1)
+		if (logsink == LOGSINK_SYSLOG)
 			log_thread_reset();
 	}
 	reconfig_sig = 0;
@@ -3033,7 +3033,7 @@ static void cleanup_child(void)
 		cleanup_dmevent_waiter();
 
 	cleanup_pidfile();
-	if (logsink == 1)
+	if (logsink == LOGSINK_SYSLOG)
 		log_thread_stop();
 
 	cleanup_conf();
@@ -3076,7 +3076,7 @@ child (__attribute__((unused)) void *param)
 	setup_thread_attr(&uevent_attr, DEFAULT_UEVENT_STACKSIZE * 1024, 0);
 	setup_thread_attr(&waiter_attr, 32 * 1024, 1);
 
-	if (logsink == 1) {
+	if (logsink == LOGSINK_SYSLOG) {
 		setup_thread_attr(&log_attr, 64 * 1024, 0);
 		log_thread_start(&log_attr);
 		pthread_attr_destroy(&log_attr);
@@ -3307,7 +3307,7 @@ main (int argc, char *argv[])
 	ANNOTATE_BENIGN_RACE_SIZED(&uxsock_timeout, sizeof(uxsock_timeout),
 		"Suppress complaints about this scalar variable");
 
-	logsink = 1;
+	logsink = LOGSINK_SYSLOG;
 
 	if (getuid() != 0) {
 		fprintf(stderr, "need to be root\n");
@@ -3334,9 +3334,8 @@ main (int argc, char *argv[])
 		switch(arg) {
 		case 'd':
 			foreground = 1;
-			if (logsink > 0)
-				logsink = 0;
-			//debug=1; /* ### comment me out ### */
+			if (logsink == LOGSINK_SYSLOG)
+				logsink = LOGSINK_STDERR_WITH_TIME;
 			break;
 		case 'v':
 			if (sizeof(optarg) > sizeof(char *) ||
@@ -3346,7 +3345,7 @@ main (int argc, char *argv[])
 			libmp_verbosity = verbosity = atoi(optarg);
 			break;
 		case 's':
-			logsink = -1;
+			logsink = LOGSINK_STDERR_WITHOUT_TIME;
 			break;
 		case 'k':
 			logsink = 0;
@@ -3379,7 +3378,7 @@ main (int argc, char *argv[])
 		char * s = cmd;
 		char * c = s;
 
-		logsink = 0;
+		logsink = LOGSINK_STDERR_WITH_TIME;
 		if (verbosity)
 			libmp_verbosity = verbosity;
 		conf = load_config(DEFAULT_CONFIGFILE);
diff --git a/tests/globals.c b/tests/globals.c
index 8add5eb..fc0c07a 100644
--- a/tests/globals.c
+++ b/tests/globals.c
@@ -1,9 +1,10 @@
 #include "structs.h"
 #include "config.h"
+#include "debug.h"
 
 /* Required globals */
 struct udev *udev;
-int logsink = -1;
+int logsink = LOGSINK_STDERR_WITHOUT_TIME;
 struct config conf = {
 	.verbosity = 4,
 };
diff --git a/tests/hwtable.c b/tests/hwtable.c
index 57f832b..4dd0873 100644
--- a/tests/hwtable.c
+++ b/tests/hwtable.c
@@ -53,7 +53,7 @@ struct hwt_state {
 
 static struct config *_conf;
 struct udev *udev;
-int logsink = -1;
+int logsink = LOGSINK_STDERR_WITHOUT_TIME;
 
 struct config *get_multipath_config(void)
 {
-- 
2.29.0


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