summaryrefslogtreecommitdiff
path: root/lib/shutdown.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/shutdown.c')
-rw-r--r--lib/shutdown.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/lib/shutdown.c b/lib/shutdown.c
index a7d9ac519..93bd4facf 100644
--- a/lib/shutdown.c
+++ b/lib/shutdown.c
@@ -32,9 +32,18 @@ int
rpl_shutdown (int fd, int how)
{
SOCKET sock = FD_TO_SOCKET (fd);
- int r = shutdown (sock, how);
- if (r < 0)
- set_winsock_errno ();
- return r;
+ if (sock == INVALID_SOCKET)
+ {
+ errno = EBADF;
+ return -1;
+ }
+ else
+ {
+ int r = shutdown (sock, how);
+ if (r < 0)
+ set_winsock_errno ();
+
+ return r;
+ }
}