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-rw-r--r--include/iprt/nocrt/unistd.h125
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diff --git a/include/iprt/nocrt/unistd.h b/include/iprt/nocrt/unistd.h
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+++ b/include/iprt/nocrt/unistd.h
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+/** @file
+ * IPRT / No-CRT - Minimal unistd.h header.
+ */
+
+/*
+ * Copyright (C) 2022-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef IPRT_INCLUDED_nocrt_unistd_h
+#define IPRT_INCLUDED_nocrt_unistd_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/nocrt/sys/types.h>
+#ifdef IPRT_NO_CRT_FOR_3RD_PARTY
+# include <iprt/nocrt/time.h> /* file.h includes fs.h which includes time.h */
+# include <iprt/file.h> /* for RTFILE_SEEK_XXX */
+# include <iprt/assertcompile.h>
+#endif
+
+
+#ifdef IPRT_NO_CRT_FOR_3RD_PARTY
+
+/* Flags for access: */
+# define F_OK 0
+# define X_OK 1
+# define W_OK 2
+# define R_OK 4
+
+/* These are also in stdio.h: */
+# undef SEEK_SET
+# define SEEK_SET RTFILE_SEEK_BEGIN
+# undef SEEK_CUR
+# define SEEK_CUR RTFILE_SEEK_CURRENT
+# undef SEEK_END
+# define SEEK_END RTFILE_SEEK_END
+AssertCompile(SEEK_SET == 0); AssertCompile(SEEK_CUR == 1); AssertCompile(SEEK_END == 2); /* Also in WDK header mmiscapi.h. */
+
+RT_C_DECLS_BEGIN
+
+int RT_NOCRT(access)(const char *, int) RT_NOEXCEPT;
+int RT_NOCRT(dup)(int) RT_NOEXCEPT;
+int RT_NOCRT(dup2)(int, int) RT_NOEXCEPT;
+ssize_t RT_NOCRT(read)(int, void *, size_t) RT_NOEXCEPT;
+ssize_t RT_NOCRT(write)(int, const void *, size_t) RT_NOEXCEPT;
+int RT_NOCRT(close)(int) RT_NOEXCEPT;
+int RT_NOCRT(isatty)(int) RT_NOEXCEPT;
+char *RT_NOCRT(getcwd)(char *, size_t) RT_NOEXCEPT;
+RTPROCESS RT_NOCRT(getpid)(void) RT_NOEXCEPT;
+RTPROCESS RT_NOCRT(getppid)(void) RT_NOEXCEPT;
+int RT_NOCRT(unlink)(const char *) RT_NOEXCEPT;
+
+int RT_NOCRT(_access)(const char *, int) RT_NOEXCEPT;
+int RT_NOCRT(_dup)(int) RT_NOEXCEPT;
+int RT_NOCRT(_dup2)(int, int) RT_NOEXCEPT;
+ssize_t RT_NOCRT(_read)(int, void *, size_t) RT_NOEXCEPT;
+ssize_t RT_NOCRT(_write)(int, const void *, size_t) RT_NOEXCEPT;
+int RT_NOCRT(_close)(int) RT_NOEXCEPT;
+int RT_NOCRT(_isatty)(int) RT_NOEXCEPT;
+char *RT_NOCRT(_getcwd)(char *, size_t) RT_NOEXCEPT;
+RTPROCESS RT_NOCRT(_getpid)(void) RT_NOEXCEPT;
+RTPROCESS RT_NOCRT(_getppid)(void) RT_NOEXCEPT;
+int RT_NOCRT(_unlink)(const char *) RT_NOEXCEPT;
+
+# if !defined(RT_WITHOUT_NOCRT_WRAPPERS) && !defined(RT_WITHOUT_NOCRT_WRAPPER_ALIASES)
+# define access RT_NOCRT(access)
+# define dup RT_NOCRT(dup)
+# define dup2 RT_NOCRT(dup2)
+# define read RT_NOCRT(read)
+# define write RT_NOCRT(write)
+# define close RT_NOCRT(close)
+# define isatty RT_NOCRT(isatty)
+# define getcwd RT_NOCRT(getcwd)
+# define getpid RT_NOCRT(getpid)
+# define getppid RT_NOCRT(getppid)
+# define unlink RT_NOCRT(unlink)
+
+# define _access RT_NOCRT(access)
+# define _dup RT_NOCRT(dup)
+# define _dup2 RT_NOCRT(dup2)
+# define _read RT_NOCRT(read)
+# define _write RT_NOCRT(write)
+# define _close RT_NOCRT(close)
+# define _isatty RT_NOCRT(isatty)
+# define _getcwd RT_NOCRT(getcwd)
+# define _getpid RT_NOCRT(getpid)
+# define _getppid RT_NOCRT(getppid)
+# define _unlink RT_NOCRT(unlink)
+# endif
+
+RT_C_DECLS_END
+
+#endif /* IPRT_NO_CRT_FOR_3RD_PARTY */
+
+
+#endif /* !IPRT_INCLUDED_nocrt_unistd_h */
+