1 files changed, 67 insertions, 0 deletions
diff --git a/openbsd-compat/setresguid.c b/openbsd-compat/setresguid.c
new file mode 100644
index 00000000..78e7f196
--- /dev/null
+++ b/openbsd-compat/setresguid.c
@@ -0,0 +1,67 @@
+/* Subset of uidswap.c from portable OpenSSH */
+
+/* $OpenBSD: uidswap.c,v 1.35 2006/08/03 03:34:42 deraadt Exp $ */
+/*
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ *                    All rights reserved
+ * Code for uid-swapping.
+ *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose.  Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ */
+
+#include "includes.h"
+
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "log.h"
+
+#ifndef HAVE_SETRESGID
+int setresgid(uid_t rgid, uid_t egid, uid_t sgid)
+{
+
+#if defined(HAVE_SETRESGID) && !defined(BROKEN_SETRESGID)
+	if (setresgid(rgid, egid, sgid) < 0)
+		fatal("setresgid %u: %.100s", (u_int)rgid, strerror(errno));
+#elif defined(HAVE_SETREGID) && !defined(BROKEN_SETREGID)
+	if (setregid(rgid, egid) < 0)
+		fatal("setregid %u: %.100s", (u_int)rgid, strerror(errno));
+#else
+	if (setegid(egid) < 0)
+		fatal("setegid %u: %.100s", (u_int)egid, strerror(errno));
+	if (setgid(rgid) < 0)
+		fatal("setgid %u: %.100s", (u_int)rgid, strerror(errno));
+#endif
+	return (0);
+}
+#endif /* HAVE_SETRESGID */
+
+
+
+#ifndef HAVE_SETRESUID
+int setresuid(uid_t ruid, uid_t euid, uid_t suid)
+{
+
+#if defined(HAVE_SETRESUID) && !defined(BROKEN_SETRESUID)
+	if (setresuid(ruid, euid, suid) < 0)
+		fatal("setresuid %u: %.100s", (u_int)ruid, strerror(errno));
+#elif defined(HAVE_SETREUID) && !defined(BROKEN_SETREUID)
+	if (setreuid(ruid, euid) < 0)
+		fatal("setreuid %u: %.100s", (u_int)ruid, strerror(errno));
+#else
+# ifndef SETEUID_BREAKS_SETUID
+	if (seteuid(euid) < 0)
+		fatal("seteuid %u: %.100s", (u_int)euid, strerror(errno));
+# endif
+	if (setuid(ruid) < 0)
+		fatal("setuid %u: %.100s", (u_int)ruid, strerror(errno));
+#endif
+	return (0);
+}
+#endif /* HAVE_SETRESUID */