Adding upstream version 6.1.22-dfsg.upstream/6.1.22-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 178 insertions, 0 deletions

diff --git a/src/VBox/Runtime/include/internal/rand.h b/src/VBox/Runtime/include/internal/rand.h
new file mode 100644
index 00000000..346ee4ab
--- /dev/null
+++ b/src/VBox/Runtime/include/internal/rand.h
@@ -0,0 +1,178 @@
+/* $Id: rand.h $ */
+/** @file
+ * IPRT - Internal RTRand header
+ */
+
+/*
+ * Copyright (C) 2006-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef IPRT_INCLUDED_INTERNAL_rand_h
+#define IPRT_INCLUDED_INTERNAL_rand_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/types.h>
+#include <iprt/critsect.h>
+
+/** Pointer to a random number generator instance. */
+typedef struct RTRANDINT *PRTRANDINT;
+
+/**
+ * Random number generator instance.
+ *
+ * @remarks Not sure if it makes sense to have three random getters...
+ */
+typedef struct RTRANDINT
+{
+    /** Magic value (RTRANDINT_MAGIC). */
+    uint32_t    u32Magic;
+#if 0 /** @todo later. */
+    /** Fast mutex semaphore that serializes the access, this is optional. */
+    PRTCRITSECT pCritSect;
+#endif
+
+    /**
+     * Generates random bytes.
+     *
+     * @param   pThis       Pointer to the instance data.
+     * @param   pb          Where to store the bytes.
+     * @param   cb          The number of bytes to produce.
+     */
+    DECLCALLBACKMEMBER(void ,    pfnGetBytes)(PRTRANDINT pThis, uint8_t *pb, size_t cb);
+
+    /**
+     * Generates a unsigned 32-bit random number.
+     *
+     * @returns The random number.
+     * @param   pThis       Pointer to the instance data.
+     * @param   u32First    The first number in the range.
+     * @param   u32Last     The last number in the range (i.e. inclusive).
+     */
+    DECLCALLBACKMEMBER(uint32_t, pfnGetU32)(PRTRANDINT pThis, uint32_t u32First, uint32_t u32Last);
+
+    /**
+     * Generates a unsigned 64-bit random number.
+     *
+     * @returns The random number.
+     * @param   pThis       Pointer to the instance data.
+     * @param   u64First    The first number in the range.
+     * @param   u64Last     The last number in the range (i.e. inclusive).
+     */
+    DECLCALLBACKMEMBER(uint64_t, pfnGetU64)(PRTRANDINT pThis, uint64_t u64First, uint64_t u64Last);
+
+    /**
+     * Generic seeding.
+     *
+     * @returns IPRT status code.
+     * @retval  VERR_NOT_SUPPORTED if it isn't a pseudo generator.
+     *
+     * @param   pThis       Pointer to the instance data.
+     * @param   u64Seed     The seed.
+     */
+    DECLCALLBACKMEMBER(int, pfnSeed)(PRTRANDINT pThis, uint64_t u64Seed);
+
+    /**
+     * Save the current state of a pseudo generator.
+     *
+     * This can be use to save the state so it can later be resumed at the same
+     * position.
+     *
+     * @returns IPRT status code.
+     * @retval  VINF_SUCCESS on success. *pcbState contains the length of the
+     *          returned string and pszState contains the state string.
+     * @retval  VERR_BUFFER_OVERFLOW if the supplied buffer is too small. *pcbState
+     *          will contain the necessary buffer size.
+     * @retval  VERR_NOT_SUPPORTED by non-psuedo generators.
+     *
+     * @param   pThis       Pointer to the instance data.
+     * @param   pszState    Where to store the state. The returned string will be
+     *                      null terminated and printable.
+     * @param   pcbState    The size of the buffer pszState points to on input, the
+     *                      size required / used on return (including the
+     *                      terminator, thus the 'cb' instead of 'cch').
+     */
+    DECLCALLBACKMEMBER(int, pfnSaveState)(PRTRANDINT pThis, char *pszState, size_t *pcbState);
+
+    /**
+     * Restores the state of a pseudo generator.
+     *
+     * The state must have been obtained using pfnGetState.
+     *
+     * @returns IPRT status code.
+     * @retval  VERR_PARSE_ERROR if the state string is malformed.
+     * @retval  VERR_NOT_SUPPORTED by non-psuedo generators.
+     *
+     * @param   pThis       Pointer to the instance data.
+     * @param   pszState    The state to load.
+     */
+    DECLCALLBACKMEMBER(int, pfnRestoreState)(PRTRANDINT pThis, char const *pszState);
+
+    /**
+     * Destroys the instance.
+     *
+     * The callee is responsible for freeing all resources, including
+     * the instance data.
+     *
+     * @returns IPRT status code. State undefined on failure.
+     * @param   pThis       Pointer to the instance data.
+     */
+    DECLCALLBACKMEMBER(int, pfnDestroy)(PRTRANDINT pThis);
+
+    /** Union containing the specific state info for each generator. */
+    union
+    {
+        struct RTRandParkMiller
+        {
+            /** The context. */
+            uint32_t    u32Ctx;
+            /** The number of single bits used to fill in the 31st bit. */
+            uint32_t    u32Bits;
+            /** The number bits in u32Bits. */
+            uint32_t    cBits;
+        } ParkMiller;
+
+        struct RTRandFile
+        {
+            /** The file handle (native). */
+            intptr_t    hFile;
+        } File;
+    } u;
+} RTRANDINT;
+
+
+RT_C_DECLS_BEGIN
+
+DECLHIDDEN(DECLCALLBACK(void))      rtRandAdvSynthesizeBytesFromU32(PRTRANDINT pThis, uint8_t *pb, size_t cb);
+DECLHIDDEN(DECLCALLBACK(void))      rtRandAdvSynthesizeBytesFromU64(PRTRANDINT pThis, uint8_t *pb, size_t cb);
+DECLHIDDEN(DECLCALLBACK(uint32_t))  rtRandAdvSynthesizeU32FromBytes(PRTRANDINT pThis, uint32_t u32First, uint32_t u32Last);
+DECLHIDDEN(DECLCALLBACK(uint32_t))  rtRandAdvSynthesizeU32FromU64(PRTRANDINT pThis, uint32_t u32First, uint32_t u32Last);
+DECLHIDDEN(DECLCALLBACK(uint64_t))  rtRandAdvSynthesizeU64FromBytes(PRTRANDINT pThis, uint64_t u64First, uint64_t u64Last);
+DECLHIDDEN(DECLCALLBACK(uint64_t))  rtRandAdvSynthesizeU64FromU32(PRTRANDINT pThis, uint64_t u64First, uint64_t u64Last);
+DECLHIDDEN(DECLCALLBACK(int))       rtRandAdvStubSeed(PRTRANDINT pThis, uint64_t u64Seed);
+DECLHIDDEN(DECLCALLBACK(int))       rtRandAdvStubSaveState(PRTRANDINT pThis, char *pszState, size_t *pcbState);
+DECLHIDDEN(DECLCALLBACK(int))       rtRandAdvStubRestoreState(PRTRANDINT pThis, char const *pszState);
+DECLHIDDEN(DECLCALLBACK(int))       rtRandAdvDefaultDestroy(PRTRANDINT pThis);
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_INTERNAL_rand_h */
+