sandbox: missing return value checks in eth-raw-os
We should check the return value of fcntl().
Addresses-Coverity-ID: 131108 ("Unchecked return value from library")
Addresses-Coverity-ID: 131109 ("Unchecked return value from library")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/arch/sandbox/cpu/eth-raw-os.c b/arch/sandbox/cpu/eth-raw-os.c
index 92c35ae..39ea3b3 100644
--- a/arch/sandbox/cpu/eth-raw-os.c
+++ b/arch/sandbox/cpu/eth-raw-os.c
@@ -105,7 +105,12 @@
/* Make the socket non-blocking */
flags = fcntl(priv->sd, F_GETFL, 0);
- fcntl(priv->sd, F_SETFL, flags | O_NONBLOCK);
+ ret = fcntl(priv->sd, F_SETFL, flags | O_NONBLOCK);
+ if (ret == -1) {
+ printf("Failed to make socket non-blocking: %d %s\n", errno,
+ strerror(errno));
+ return -errno;
+ }
/* Enable promiscuous mode to receive responses meant for us */
mr.mr_ifindex = device->sll_ifindex;
@@ -172,7 +177,12 @@
/* Make the socket non-blocking */
flags = fcntl(priv->sd, F_GETFL, 0);
- fcntl(priv->sd, F_SETFL, flags | O_NONBLOCK);
+ ret = fcntl(priv->sd, F_SETFL, flags | O_NONBLOCK);
+ if (ret == -1) {
+ printf("Failed to make socket non-blocking: %d %s\n", errno,
+ strerror(errno));
+ return -errno;
+ }
/* Include the UDP/IP headers on send and receive */
ret = setsockopt(priv->sd, IPPROTO_IP, IP_HDRINCL, &one,