New function which support krb5_init_os_context and krb5_free_os_context

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@4744 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/lib/krb5/os/init_os_ctx.c b/src/lib/krb5/os/init_os_ctx.c
new file mode 100644 (file)
index 0000000..026c94a
--- /dev/null
+++ b/src/lib/krb5/os/init_os_ctx.c
@@ -0,0 +1,65 @@
+/*
+ * lib/krb5/os/init_ctx.c
+ *
+ * Copyright 1994 by the Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ *   require a specific license from the United States Government.
+ *   It is the responsibility of any person or organization contemplating
+ *   export to obtain such a license before exporting.
+ * 
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ *
+ * krb5_init_contex()
+ */
+
+#include <krb5/krb5.h>
+#include <krb5/libos.h>
+#include <krb5/los-proto.h>
+#include <krb5/ext-proto.h>
+
+krb5_error_code
+krb5_os_init_context(ctx)
+       krb5_context *ctx;
+{
+       krb5_os_context *os_ctx;
+       
+       if (ctx->os_context)
+               return 0;
+
+       os_ctx = malloc(sizeof(struct _krb5_os_context));
+       if (!os_ctx)
+               return ENOMEM;
+       memset(os_ctx, 0, sizeof(struct _krb5_os_context));
+       os_ctx->magic = KV5M_OS_CONTEXT;
+
+       ctx->os_context = (void *) os_ctx;
+       
+       return 0;
+}
+
+void
+krb5_free_os_context(ctx)
+       krb5_context    *ctx;
+{
+       krb5_os_context *os_ctx;
+
+       os_ctx = ctx->os_context;
+       
+       if (!os_ctx)
+               return;
+
+       os_ctx->magic = 0;
+       free(os_ctx);
+       ctx->os_context = 0;
+}