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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/r3/linux/RTFileSetAllocationSize-linux.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 '')
-rw-r--r-- | src/VBox/Runtime/r3/linux/RTFileSetAllocationSize-linux.cpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/linux/RTFileSetAllocationSize-linux.cpp b/src/VBox/Runtime/r3/linux/RTFileSetAllocationSize-linux.cpp new file mode 100644 index 00000000..f3acd7fe --- /dev/null +++ b/src/VBox/Runtime/r3/linux/RTFileSetAllocationSize-linux.cpp @@ -0,0 +1,86 @@ +/* $Id: RTFileSetAllocationSize-linux.cpp $ */ +/** @file + * IPRT - RTFileSetAllocationSize, linux implementation. + */ + +/* + * Copyright (C) 2016-2023 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 LOG_GROUP RTLOGGROUP_FILE +#include <iprt/file.h> +#include "internal/iprt.h" + +#include <iprt/assert.h> +#include <iprt/errcore.h> + +#include <dlfcn.h> +#include <errno.h> +#include <unistd.h> +#include <sys/fcntl.h> + +/** + * The Linux specific fallocate() method. + */ +typedef int (*PFNLNXFALLOCATE) (int iFd, int fMode, off_t offStart, off_t cb); +/** Flag to specify that the file size should not be extended. */ +#define LNX_FALLOC_FL_KEEP_SIZE 1 + +RTDECL(int) RTFileSetAllocationSize(RTFILE hFile, uint64_t cbSize, uint32_t fFlags) +{ + AssertReturn(hFile != NIL_RTFILE, VERR_INVALID_PARAMETER); + AssertReturn(!(fFlags & ~RTFILE_ALLOC_SIZE_F_VALID), VERR_INVALID_PARAMETER); + AssertMsgReturn(sizeof(off_t) >= sizeof(cbSize) || RT_HIDWORD(cbSize) == 0, + ("64-bit filesize not supported! cbSize=%lld\n", cbSize), + VERR_NOT_SUPPORTED); + + int rc; + PFNLNXFALLOCATE pfnLnxFAllocate = (PFNLNXFALLOCATE)(uintptr_t)dlsym(RTLD_DEFAULT, "fallocate64"); + if (RT_VALID_PTR(pfnLnxFAllocate)) + { + int fLnxFlags = (fFlags & RTFILE_ALLOC_SIZE_F_KEEP_SIZE) ? LNX_FALLOC_FL_KEEP_SIZE : 0; + int rcLnx = pfnLnxFAllocate(RTFileToNative(hFile), fLnxFlags, 0, cbSize); + if (rcLnx == 0) + rc = VINF_SUCCESS; + else if (errno == EOPNOTSUPP) + rc = VERR_NOT_SUPPORTED; + else + rc = RTErrConvertFromErrno(errno); + } + else + rc = VERR_NOT_SUPPORTED; + + return rc; +} +RT_EXPORT_SYMBOL(RTFileSetAllocationSize); |