1 files changed, 79 insertions, 0 deletions

diff --git a/src/lib/libcrypto/crypto/arc4random_hpux.h b/src/lib/libcrypto/crypto/arc4random_hpux.h
new file mode 100644
index 0000000000..b6841f583c
--- /dev/null
+++ b/src/lib/libcrypto/crypto/arc4random_hpux.h
@@ -0,0 +1,79 @@
+/*      $OpenBSD: arc4random_hpux.h,v 1.1 2015/01/06 21:08:11 bcook Exp $       */
+
+/*
+ * Copyright (c) 1996, David Mazieres <dm@uun.org>
+ * Copyright (c) 2008, Damien Miller <djm@openbsd.org>
+ * Copyright (c) 2013, Markus Friedl <markus@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Stub functions for portability.
+ */
+
+#include <sys/mman.h>
+
+#include <pthread.h>
+#include <signal.h>
+
+static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
+#define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
+#define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
+
+#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
+
+static inline void
+_getentropy_fail(void)
+{
+        raise(SIGKILL);
+}
+
+static volatile sig_atomic_t _rs_forked;
+
+static inline void
+_rs_forkhandler(void)
+{
+        _rs_forked = 1;
+}
+
+static inline void
+_rs_forkdetect(void)
+{
+        static pid_t _rs_pid = 0;
+        pid_t pid = getpid();
+
+        if (_rs_pid == 0 || _rs_pid != pid || _rs_forked) {
+                _rs_pid = pid;
+                _rs_forked = 0;
+                if (rs)
+                        memset(rs, 0, sizeof(*rs));
+        }
+}
+
+static inline int
+_rs_allocate(struct _rs **rsp, struct _rsx **rsxp)
+{
+        if ((*rsp = mmap(NULL, sizeof(**rsp), PROT_READ|PROT_WRITE,
+            MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED)
+                return (-1);
+
+        if ((*rsxp = mmap(NULL, sizeof(**rsxp), PROT_READ|PROT_WRITE,
+            MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) {
+                munmap(*rsp, sizeof(**rsp));
+                return (-1);
+        }
+
+        _ARC4_ATFORK(_rs_forkhandler);
+        return (0);
+}