From: Sebastian Harl <sh@tokkee.org>
Date: Sun, 20 Oct 2013 19:38:23 +0000 (+0200)
Subject: utils channel: Let channel_select() set errno.
X-Git-Tag: sysdb-0.1.0~336^2~50
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=23c8e0f818e5baf91e75993571b67fcb735628f5;p=sysdb.git

utils channel: Let channel_select() set errno.
---

diff --git a/src/utils/channel.c b/src/utils/channel.c
index 92d793e..afce6f5 100644
--- a/src/utils/channel.c
+++ b/src/utils/channel.c
@@ -29,6 +29,8 @@
 
 #include <assert.h>
 
+#include <errno.h>
+
 #include <stdlib.h>
 #include <string.h>
 
@@ -170,11 +172,15 @@ sdb_channel_select(sdb_channel_t *chan, int *wantread, void *read_data,
 	struct timespec abstime;
 	int status = 0;
 
-	if (! chan)
+	if (! chan) {
+		errno = EINVAL;
 		return -1;
+	}
 
-	if ((! wantread) && (! read_data) && (! wantwrite) && (! write_data))
+	if ((! wantread) && (! read_data) && (! wantwrite) && (! write_data)) {
+		errno = EINVAL;
 		return -1;
+	}
 
 	if (timeout) {
 		if (clock_gettime(CLOCK_REALTIME, &abstime))
@@ -210,7 +216,11 @@ sdb_channel_select(sdb_channel_t *chan, int *wantread, void *read_data,
 	}
 
 	pthread_mutex_unlock(&chan->lock);
-	return status;
+	if (status) {
+		errno = status;
+		return -1;
+	}
+	return 0;
 } /* sdb_channel_select */
 
 int