X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fdaemon%2Fcommon.c;h=fba51ef8f73be8f8bbb174e55525e59e6e397eb0;hb=dc2eb041159b967838a2eb658cb256bc846c5264;hp=b2448086c53aadc0641b63bf7eef9b51e8c1decf;hpb=79593ed5e0a3def8e91be5b1de15a536af2d4a92;p=collectd.git

diff --git a/src/daemon/common.c b/src/daemon/common.c
index b2448086..fba51ef8 100644
--- a/src/daemon/common.c
+++ b/src/daemon/common.c
@@ -49,6 +49,8 @@
 #include <sys/socket.h>
 #include <netdb.h>
 
+#include <poll.h>
+
 #if HAVE_NETINET_IN_H
 # include <netinet/in.h>
 #endif
@@ -270,9 +272,23 @@ ssize_t swrite (int fd, const void *buf, size_t count)
 	const char *ptr;
 	size_t      nleft;
 	ssize_t     status;
+	struct      pollfd pfd;
 
 	ptr   = (const char *) buf;
 	nleft = count;
+	
+	/* checking for closed peer connection */
+	pfd.fd = fd;
+	pfd.events = POLLIN | POLLHUP;
+	pfd.revents = 0;
+	if (poll(&pfd, 1, 0) > 0) {
+		char buffer[32];
+		if (recv(fd, buffer, sizeof(buffer), MSG_PEEK | MSG_DONTWAIT) == 0) {
+			// if recv returns zero (even though poll() said there is data to be read),
+			// that means the connection has been closed
+			return -1;
+		}
+	}
 
 	while (nleft > 0)
 	{
@@ -1154,6 +1170,9 @@ int parse_values (char *buffer, value_list_t *vl, const data_set_t *ds)
 	char *ptr;
 	char *saveptr;
 
+	if ((buffer == NULL) || (vl == NULL) || (ds == NULL))
+		return EINVAL;
+
 	i = -1;
 	dummy = buffer;
 	saveptr = NULL;