X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/2ac3322ef9bc032ad942753a56696764aa0b0f74..533c7491240f2fd71d026e91f0a940f4729992fd:/unix/uxmisc.c

diff --git a/unix/uxmisc.c b/unix/uxmisc.c
index c613a204..74eb1568 100644
--- a/unix/uxmisc.c
+++ b/unix/uxmisc.c
@@ -2,6 +2,7 @@
  * PuTTY miscellaneous Unix stuff
  */
 
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -121,3 +122,14 @@ void pgp_fingerprints(void)
 	  "PuTTY Master Key (DSA), 1024-bit:\n"
 	  "  " PGP_DSA_MASTER_KEY_FP "\n", stdout);
 }
+
+/*
+ * Set FD_CLOEXEC on a file descriptor
+ */
+int cloexec(int fd) {
+    int fdflags;
+
+    fdflags = fcntl(fd, F_GETFD);
+    if (fdflags == -1) return -1;
+    return fcntl(fd, F_SETFD, fdflags | FD_CLOEXEC);
+}