- djm@cvs.openbsd.org 2005/09/13 23:40:07

[openssh.git] / misc.c

diff --git a/misc.c b/misc.c
index 2dd8ae6e36ff0df528f9e5544a539ef86cac00ee..27b947f0c79f54ba0cb6aedc68e231e77cb116dc 100644 (file)
--- a/misc.c
+++ b/misc.c
@@ -24,7 +24,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: misc.c,v 1.34 2005/07/08 09:26:18 dtucker Exp $");
+RCSID("$OpenBSD: misc.c,v 1.35 2005/09/13 23:40:07 djm Exp $");
 
 #include "misc.h"
 #include "log.h"
@@ -507,6 +507,26 @@ read_keyfile_line(FILE *f, const char *filename, char *buf, size_t bufsz,
        return -1;
 }
 
+void
+sanitise_stdfd(void)
+{
+       int nullfd;
+
+       if ((nullfd = open(_PATH_DEVNULL, O_RDWR)) == -1) {
+               fprintf(stderr, "Couldn't open /dev/null: %s", strerror(errno));
+               exit(1);
+       }
+       while (nullfd < 2) {
+               if (dup2(nullfd, nullfd + 1) == -1) {
+                       fprintf(stderr, "dup2: %s", strerror(errno));
+                       exit(1);
+               }
+               nullfd++;
+       }
+       if (nullfd > 2)
+               close(nullfd);
+}
+
 char *
 tohex(const u_char *d, u_int l)
 {