Replace usages of sigwait(3) with sigwaitinfo(2)

This is basically the same call, but it has the advantage of being
supported by FreeBSD's valgrind, which sigwait() is not.

References #1106.

src/charon-cmd/charon-cmd.c

@@ -17,14 +17,13 @@
  */
 
 #include <stdio.h>
-#define _POSIX_PTHREAD_SEMANTICS /* for two param sigwait on OpenSolaris */
 #include <signal.h>
-#undef _POSIX_PTHREAD_SEMANTICS
 #include <pthread.h>
 #include <sys/types.h>
 #include <sys/utsname.h>
 #include <unistd.h>
 #include <getopt.h>
+#include <errno.h>
 
 #include <library.h>
 #include <hydra.h>
@@ -112,12 +111,11 @@ static int run()
 	while (TRUE)
 	{
 		int sig;
-		int error;
 
-		error = sigwait(&set, &sig);
+		sig = sigwaitinfo(&set, NULL);
-		if (error)
+		if (sig == -1)
 		{
-			DBG1(DBG_DMN, "error %d while waiting for a signal", error);
+			DBG1(DBG_DMN, "waiting for signal failed: %s", strerror(errno));
 			return 1;
 		}
 		switch (sig)
@@ -382,7 +380,7 @@ int main(int argc, char *argv[])
 	lib->plugins->status(lib->plugins, LEVEL_CTRL);
 
 	/* add handler for SEGV and ILL,
-	 * INT, TERM and HUP are handled by sigwait() in run() */
+	 * INT, TERM and HUP are handled by sigwaitinfo() in run() */
 	action.sa_handler = segv_handler;
 	action.sa_flags = 0;
 	sigemptyset(&action.sa_mask);

src/charon-nm/charon-nm.c

@@ -18,6 +18,7 @@
 #include <signal.h>
 #include <sys/types.h>
 #include <unistd.h>
+#include <errno.h>
 
 #include <hydra.h>
 #include <daemon.h>
@@ -80,12 +81,11 @@ static void run()
 	while (TRUE)
 	{
 		int sig;
-		int error;
 
-		error = sigwait(&set, &sig);
+		sig = sigwaitinfo(&set, NULL);
-		if (error)
+		if (sig == -1)
 		{
-			DBG1(DBG_DMN, "error %d while waiting for a signal", error);
+			DBG1(DBG_DMN, "waiting for signal failed: %s", strerror(errno));
 			return;
 		}
 		switch (sig)
@@ -237,7 +237,7 @@ int main(int argc, char *argv[])
 	}
 
 	/* add handler for SEGV and ILL,
-	 * INT and TERM are handled by sigwait() in run() */
+	 * INT and TERM are handled by sigwaitinfo() in run() */
 	action.sa_handler = segv_handler;
 	action.sa_flags = 0;
 	sigemptyset(&action.sa_mask);

src/charon-systemd/charon-systemd.c

@@ -249,10 +249,10 @@ static int run()
 
 	while (TRUE)
 	{
-		int sig, error;
+		int sig;
 
-		error = sigwait(&set, &sig);
+		sig = sigwaitinfo(&set, NULL);
-		if (error)
+		if (sig == -1)
 		{
 			DBG1(DBG_DMN, "waiting for signal failed: %s", strerror(error));
 			return SS_RC_INITIALIZATION_FAILED;
@@ -393,7 +393,7 @@ int main(int argc, char *argv[])
 	}
 
 	/* add handler for SEGV and ILL,
-	 * INT, TERM and HUP are handled by sigwait() in run() */
+	 * INT, TERM and HUP are handled by sigwaitinfo() in run() */
 	action.sa_handler = segv_handler;
 	action.sa_flags = 0;
 	sigemptyset(&action.sa_mask);

src/charon-tkm/src/charon-tkm.c

@@ -24,6 +24,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 #include <libgen.h>
+#include <errno.h>
 
 #include <hydra.h>
 #include <daemon.h>
@@ -98,12 +99,11 @@ static void run()
 	while (TRUE)
 	{
 		int sig;
-		int error;
 
-		error = sigwait(&set, &sig);
+		sig = sigwaitinfo(&set, NULL);
-		if (error)
+		if (sig == -1)
 		{
-			DBG1(DBG_DMN, "error %d while waiting for a signal", error);
+			DBG1(DBG_DMN, "waiting for signal failed: %s", strerror(error));
 			return;
 		}
 		switch (sig)
@@ -358,7 +358,7 @@ int main(int argc, char *argv[])
 	lib->encoding->add_encoder(lib->encoding, tkm_encoder_encode);
 
 	/* add handler for SEGV and ILL,
-	 * INT and TERM are handled by sigwait() in run() */
+	 * INT and TERM are handled by sigwaitinfo() in run() */
 	action.sa_handler = segv_handler;
 	action.sa_flags = 0;
 	sigemptyset(&action.sa_mask);

src/charon/charon.c

@@ -17,9 +17,7 @@
  */
 
 #include <stdio.h>
-#define _POSIX_PTHREAD_SEMANTICS /* for two param sigwait on OpenSolaris */
 #include <signal.h>
-#undef _POSIX_PTHREAD_SEMANTICS
 #include <pthread.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -110,12 +108,11 @@ static void run()
 	while (TRUE)
 	{
 		int sig;
-		int error;
 
-		error = sigwait(&set, &sig);
+		sig = sigwaitinfo(&set, NULL);
-		if (error)
+		if (sig == -1)
 		{
-			DBG1(DBG_DMN, "error %d while waiting for a signal", error);
+			DBG1(DBG_DMN, "waiting for signal failed: %s", strerror(errno));
 			return;
 		}
 		switch (sig)
@@ -434,7 +431,7 @@ int main(int argc, char *argv[])
 	}
 
 	/* add handler for SEGV and ILL,
-	 * INT, TERM and HUP are handled by sigwait() in run() */
+	 * INT, TERM and HUP are handled by sigwaitinfo() in run() */
 	action.sa_handler = segv_handler;
 	action.sa_flags = 0;
 	sigemptyset(&action.sa_mask);

src/conftest/conftest.c

@@ -563,7 +563,7 @@ int main(int argc, char *argv[])
 	sigaddset(&set, SIGTERM);
 	sigprocmask(SIG_BLOCK, &set, NULL);
 
-	while (sigwait(&set, &sig) == 0)
+	while ((sig = sigwaitinfo(&set, NULL)) != -1)
 	{
 		switch (sig)
 		{

src/frontends/osx/charon-xpc/charon-xpc.c

@@ -19,6 +19,7 @@
 #include <stdio.h>
 #include <signal.h>
 #include <pthread.h>
+#include <errno.h>
 
 #include <library.h>
 #include <hydra.h>
@@ -84,9 +85,10 @@ static int run()
 	{
 		int sig;
 
-		if (sigwait(&set, &sig))
+		sig = sigwaitinfo(&set, NULL);
+		if (sig == -1)
 		{
-			DBG1(DBG_DMN, "error while waiting for a signal");
+			DBG1(DBG_DMN, "waiting for signal failed: %s", strerror(errno));
 			return 1;
 		}
 		switch (sig)
@@ -206,7 +208,7 @@ int main(int argc, char *argv[])
 		 VERSION, utsname.sysname, utsname.release, utsname.machine);
 
 	/* add handler for SEGV and ILL,
-	 * INT, TERM and HUP are handled by sigwait() in run() */
+	 * INT, TERM and HUP are handled by sigwaitinfo() in run() */
 	action.sa_handler = segv_handler;
 	action.sa_flags = 0;
 	sigemptyset(&action.sa_mask);

src/libfast/fast_dispatcher.c

@@ -383,14 +383,13 @@ METHOD(fast_dispatcher_t, waitsignal, void,
 	private_fast_dispatcher_t *this)
 {
 	sigset_t set;
-	int sig;
 
 	sigemptyset(&set);
 	sigaddset(&set, SIGINT);
 	sigaddset(&set, SIGTERM);
 	sigaddset(&set, SIGHUP);
 	sigprocmask(SIG_BLOCK, &set, NULL);
-	sigwait(&set, &sig);
+	sigwaitinfo(&set, NULL);
 }
 
 METHOD(fast_dispatcher_t, destroy, void,

src/libstrongswan/utils/utils.c

@@ -117,14 +117,13 @@ void wait_sigint()
 void wait_sigint()
 {
 	sigset_t set;
-	int sig;
 
 	sigemptyset(&set);
 	sigaddset(&set, SIGINT);
 	sigaddset(&set, SIGTERM);
 
 	sigprocmask(SIG_BLOCK, &set, NULL);
-	sigwait(&set, &sig);
+	sigwaitinfo(&set, NULL);
 }
 
 #endif