Merge branch 'userspace' into integrationintegration

Conflicts:
	examples/Makefile

1 files changed, 72 insertions, 0 deletions

diff --git a/userspace/ncrypto_fd.c b/userspace/ncrypto_fd.c
new file mode 100644
index 0000000..7a9aa5f
--- /dev/null
+++ b/userspace/ncrypto_fd.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2010 Red Hat, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT, INC. AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL RED HAT, INC. OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * Red Hat author: Jan Chadima <jchadima@redhat.com>
+ */
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <linux/ncr.h>
+#include "ncrypto.h"
+#include "ncrypto_internal.h"
+
+int __ncr_file_descriptor = -1;
+static int open_count = 0;
+static pthread_mutex_t open_lock = PTHREAD_MUTEX_INITIALIZER;
+
+int
+__ncr_global_init()
+{
+	int rv = 0;
+
+	/* Open the crypto device unles is not already initialized */
+	pthread_mutex_lock(&open_lock);
+	if ((__ncr_file_descriptor < 0) && ((__ncr_file_descriptor = open("/dev/crypto", O_RDWR|O_CLOEXEC)) < 0))
+		rv = -1;
+	else
+		++open_count;
+	pthread_mutex_unlock(&open_lock);
+	return rv;
+}
+
+int
+ncr_global_init(unsigned int flags)
+{
+	return __ncr_global_init();
+}
+
+void
+ncr_global_deinit(void)
+{
+	pthread_mutex_lock(&open_lock);
+	if (!--open_count && (__ncr_file_descriptor >= 0)) {
+		close(__ncr_file_descriptor);
+		__ncr_file_descriptor = -1;
+	}
+	pthread_mutex_unlock(&open_lock);
+}
+