Convert imsg_write() callers to the new simplified return logic.

OK tb@

4 files changed, 41 insertions, 29 deletions

diff --git a/usr.sbin/ripd/control.c b/usr.sbin/ripd/control.c
index fe4aa039afa..3cea757485e 100644
--- a/usr.sbin/ripd/control.c
+++ b/usr.sbin/ripd/control.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: control.c,v 1.29 2024/11/21 13:10:50 claudio Exp $ */
+/*	$OpenBSD: control.c,v 1.30 2024/11/21 13:16:07 claudio Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -226,7 +226,7 @@ control_dispatch_imsg(int fd, short event, void *bula)
 		}
 	}
 	if (event & EV_WRITE) {
-		if (imsg_write(&c->iev.ibuf) <= 0 && errno != EAGAIN) {
+		if (imsg_write(&c->iev.ibuf) == -1) {
 			control_close(fd);
 			return;
 		}
diff --git a/usr.sbin/ripd/rde.c b/usr.sbin/ripd/rde.c
index 7cbb704c942..c27debabbd3 100644
--- a/usr.sbin/ripd/rde.c
+++ b/usr.sbin/ripd/rde.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rde.c,v 1.26 2024/11/21 13:10:50 claudio Exp $ */
+/*	$OpenBSD: rde.c,v 1.27 2024/11/21 13:16:07 claudio Exp $ */
 
 /*
  * Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
@@ -203,10 +203,12 @@ rde_dispatch_imsg(int fd, short event, void *bula)
 			shut = 1;
 	}
 	if (event & EV_WRITE) {
-		if ((n = imsg_write(ibuf)) == -1 && errno != EAGAIN)
-			fatal("imsg_write");
-		if (n == 0)	/* connection closed */
-			shut = 1;
+		if (imsg_write(ibuf) == -1) {
+			if (errno == EPIPE)	/* connection closed */
+				shut = 1;
+			else
+				fatal("imsg_write");
+		}
 	}
 
 	for (;;) {
@@ -304,10 +306,12 @@ rde_dispatch_parent(int fd, short event, void *bula)
 			shut = 1;
 	}
 	if (event & EV_WRITE) {
-		if ((n = imsg_write(ibuf)) == -1 && errno != EAGAIN)
-			fatal("imsg_write");
-		if (n == 0)	/* connection closed */
-			shut = 1;
+		if (imsg_write(ibuf) == -1) {
+			if (errno == EPIPE)	/* connection closed */
+				shut = 1;
+			else
+				fatal("imsg_write");
+		}
 	}
 
 	for (;;) {
diff --git a/usr.sbin/ripd/ripd.c b/usr.sbin/ripd/ripd.c
index 96cca81c873..83f4a713a9b 100644
--- a/usr.sbin/ripd/ripd.c
+++ b/usr.sbin/ripd/ripd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ripd.c,v 1.38 2024/11/21 13:10:50 claudio Exp $ */
+/*	$OpenBSD: ripd.c,v 1.39 2024/11/21 13:16:07 claudio Exp $ */
 
 /*
  * Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
@@ -320,10 +320,12 @@ main_dispatch_ripe(int fd, short event, void *bula)
 			shut = 1;
 	}
 	if (event & EV_WRITE) {
-		if ((n = imsg_write(ibuf)) == -1 && errno != EAGAIN)
-			fatal("imsg_write");
-		if (n == 0)	/* connection closed */
-			shut = 1;
+		if (imsg_write(ibuf) == -1) {
+			if (errno == EPIPE)	/* connection closed */
+				shut = 1;
+			else
+				fatal("imsg_write");
+		}
 	}
 
 	for (;;) {
@@ -398,10 +400,12 @@ main_dispatch_rde(int fd, short event, void *bula)
 			shut = 1;
 	}
 	if (event & EV_WRITE) {
-		if ((n = imsg_write(ibuf)) == -1 && errno != EAGAIN)
-			fatal("imsg_write");
-		if (n == 0)	/* connection closed */
-			shut = 1;
+		if (imsg_write(ibuf) == -1) {
+			if (errno == EPIPE)	/* connection closed */
+				shut = 1;
+			else
+				fatal("imsg_write");
+		}
 	}
 
 	for (;;) {
diff --git a/usr.sbin/ripd/ripe.c b/usr.sbin/ripd/ripe.c
index 2e04e87d691..3008edd90d5 100644
--- a/usr.sbin/ripd/ripe.c
+++ b/usr.sbin/ripd/ripe.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ripe.c,v 1.32 2024/11/21 13:10:50 claudio Exp $ */
+/*	$OpenBSD: ripe.c,v 1.33 2024/11/21 13:16:07 claudio Exp $ */
 
 /*
  * Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
@@ -237,10 +237,12 @@ ripe_dispatch_main(int fd, short event, void *bula)
 			shut = 1;
 	}
 	if (event & EV_WRITE) {
-		if ((n = imsg_write(ibuf)) == -1 && errno != EAGAIN)
-			fatal("imsg_write");
-		if (n == 0)	/* connection closed */
-			shut = 1;
+		if (imsg_write(ibuf) == -1) {
+			if (errno == EPIPE)	/* connection closed */
+				shut = 1;
+			else
+				fatal("imsg_write");
+		}
 	}
 
 	for (;;) {
@@ -316,10 +318,12 @@ ripe_dispatch_rde(int fd, short event, void *bula)
 			shut = 1;
 	}
 	if (event & EV_WRITE) {
-		if ((n = imsg_write(ibuf)) == -1 && errno != EAGAIN)
-			fatal("imsg_write");
-		if (n == 0)	/* connection closed */
-			shut = 1;
+		if (imsg_write(ibuf) == -1) {
+			if (errno == EPIPE)	/* connection closed */
+				shut = 1;
+			else
+				fatal("imsg_write");
+		}
 	}
 
 	for (;;) {