Import gcrypt public-key cryptography and implement signature checking.

grub-core/lib/libgcrypt/src/ath.h

@@ -0,0 +1,92 @@
+/* ath.h - Thread-safeness library.
+ * Copyright (C) 2002, 2003, 2004, 2011 Free Software Foundation, Inc.
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser general Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgcrypt is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ATH_H
+#define ATH_H
+
+#include <config.h>
+
+#ifdef _WIN32
+# include <windows.h>
+#else /* !_WIN32 */
+# ifdef HAVE_SYS_SELECT_H
+#  include <sys/select.h>
+# else
+#  include <sys/time.h>
+# endif
+# include <sys/types.h>
+# ifdef HAVE_SYS_MSG_H
+#  include <sys/msg.h>  /* (e.g. for zOS) */
+# endif
+# include <sys/socket.h>
+#endif /* !_WIN32 */
+#include <gpg-error.h>
+
+
+
+/* Define _ATH_EXT_SYM_PREFIX if you want to give all external symbols
+   a prefix.  */
+#define _ATH_EXT_SYM_PREFIX _gcry_
+
+#ifdef _ATH_EXT_SYM_PREFIX
+#define _ATH_PREFIX1(x,y) x ## y
+#define _ATH_PREFIX2(x,y) _ATH_PREFIX1(x,y)
+#define _ATH_PREFIX(x) _ATH_PREFIX2(_ATH_EXT_SYM_PREFIX,x)
+#define ath_install _ATH_PREFIX(ath_install)
+#define ath_init _ATH_PREFIX(ath_init)
+#define ath_get_model _ATH_PREFIX(ath_get_model)
+#define ath_mutex_init _ATH_PREFIX(ath_mutex_init)
+#define ath_mutex_destroy _ATH_PREFIX(ath_mutex_destroy)
+#define ath_mutex_lock _ATH_PREFIX(ath_mutex_lock)
+#define ath_mutex_unlock _ATH_PREFIX(ath_mutex_unlock)
+#endif
+
+
+enum ath_thread_option
+  {
+    ATH_THREAD_OPTION_DEFAULT = 0,
+    ATH_THREAD_OPTION_USER = 1,
+    ATH_THREAD_OPTION_PTH = 2,
+    ATH_THREAD_OPTION_PTHREAD = 3
+  };
+
+struct ath_ops
+{
+  /* The OPTION field encodes the thread model and the version number
+     of this structure.
+       Bits  7 - 0  are used for the thread model
+       Bits 15 - 8  are used for the version number.
+  */
+  unsigned int option;
+
+};
+
+gpg_err_code_t ath_install (struct ath_ops *ath_ops);
+int ath_init (void);
+const char *ath_get_model (int *r_model);
+
+/* Functions for mutual exclusion.  */
+typedef void *ath_mutex_t;
+
+int ath_mutex_init (ath_mutex_t *mutex);
+int ath_mutex_destroy (ath_mutex_t *mutex);
+int ath_mutex_lock (ath_mutex_t *mutex);
+int ath_mutex_unlock (ath_mutex_t *mutex);
+
+#endif	/* ATH_H */