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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
commit | f215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch) | |
tree | 6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Runtime/common/file/nocrt-open.cpp | |
parent | Initial commit. (diff) | |
download | virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip |
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Runtime/common/file/nocrt-open.cpp')
-rw-r--r-- | src/VBox/Runtime/common/file/nocrt-open.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/file/nocrt-open.cpp b/src/VBox/Runtime/common/file/nocrt-open.cpp new file mode 100644 index 00000000..bd5000c8 --- /dev/null +++ b/src/VBox/Runtime/common/file/nocrt-open.cpp @@ -0,0 +1,104 @@ +/* $Id: nocrt-open.cpp $ */ +/** @file + * IPRT - No-CRT - read(). + */ + +/* + * 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 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define IPRT_NO_CRT_FOR_3RD_PARTY +#include "internal/nocrt.h" +#include <iprt/nocrt/fcntl.h> +#include <iprt/nocrt/errno.h> +#include <iprt/assert.h> +#include <iprt/assertcompile.h> +#include <iprt/errcore.h> +#include <iprt/file.h> + + +#undef open +int RT_NOCRT(open)(const char *pszFilename, uint64_t fFlags, ... /*RTFMODE fMode*/) +{ + /* + * Make fFlags into proper RTFILE_O_XXX. + */ + /* Make sure we got exactly one RTFILE_O_ACTION_MASK value: */ + AssertCompile(O_CREAT == RTFILE_O_OPEN_CREATE); AssertCompile(RT_IS_POWER_OF_TWO(O_CREAT)); + AssertCompile(O_EXCL == RTFILE_O_CREATE); AssertCompile(RT_IS_POWER_OF_TWO(O_EXCL)); + if (fFlags & O_CREAT) + { + if (fFlags & O_EXCL) + fFlags &= ~(uint64_t)O_CREAT; + va_list va; + va_start(va, fFlags); + int fMode = va_arg(va, int); + va_end(va); + fFlags &= ~(uint64_t)RTFILE_O_CREATE_MODE_MASK; + fFlags |= ((uint64_t)fMode << RTFILE_O_CREATE_MODE_SHIFT) & RTFILE_O_CREATE_MODE_MASK; + } + else + { + if (fFlags & O_EXCL) + fFlags &= ~(uint64_t)O_EXCL; + fFlags |= RTFILE_O_OPEN; + } + + /* Close on exec / inherit flag needs inverting: */ + AssertCompile(O_CLOEXEC == RTFILE_O_INHERIT); + fFlags ^= O_CLOEXEC; + + /* Add deny selection: */ + fFlags |= RTFILE_O_DENY_NONE; + + /* + * Try open it. + */ + RTFILE hFile = NIL_RTFILE; + int rc = RTFileOpen(&hFile, pszFilename, fFlags); + if (RT_SUCCESS(rc)) + { + intptr_t fd = RTFileToNative(hFile); + if ((int)fd == fd) + return (int)fd; + + AssertMsgFailed(("fd=%zd (%p)\n", fd, fd)); + RTFileClose(hFile); + rc = VERR_INTERNAL_ERROR; + } + errno = RTErrConvertToErrno(rc); + return -1; +} +RT_ALIAS_AND_EXPORT_NOCRT_SYMBOL(open); + |