[src/trunk]: src/usr.bin/nc use mkstemp to prevent linker warning.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/4d735a0d9494
branches:  trunk
changeset: 821577:4d735a0d9494
user:      christos <christos%NetBSD.org@localhost>
date:      Thu Feb 09 21:23:48 2017 +0000

description:
use mkstemp to prevent linker warning.

diffstat:

 usr.bin/nc/netcat.c |  12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diffs (30 lines):

diff -r 37614fe62d43 -r 4d735a0d9494 usr.bin/nc/netcat.c
--- a/usr.bin/nc/netcat.c       Thu Feb 09 21:23:11 2017 +0000
+++ b/usr.bin/nc/netcat.c       Thu Feb 09 21:23:48 2017 +0000
@@ -27,7 +27,7 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: netcat.c,v 1.4 2017/02/09 20:37:58 joerg Exp $");
+__RCSID("$NetBSD: netcat.c,v 1.5 2017/02/09 21:23:48 christos Exp $");
 
 /*
  * Re-written nc(1) for OpenBSD. Original implementation by
@@ -425,10 +425,14 @@
                if (sflag) {
                        unix_dg_tmp_socket = sflag;
                } else {
-                       strlcpy(unix_dg_tmp_socket_buf, "/tmp/nc.XXXXXXXXXX",
-                           UNIX_DG_TMP_SOCKET_SIZE);
-                       if (mktemp(unix_dg_tmp_socket_buf) == NULL)
+                       int fd;
+                       snprintf(unix_dg_tmp_socket_buf,
+                           sizeof(unix_dg_tmp_socket_buf),
+                           "/tmp/%s.XXXXXXXXXX", getprogname());
+                       /* XXX: abstract sockets instead? */
+                       if ((fd = mkstemp(unix_dg_tmp_socket_buf)) == -1)
                                err(1, "mktemp");
+                       close(fd);
                        unix_dg_tmp_socket = unix_dg_tmp_socket_buf;
                }
        }