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Diffstat (limited to 'include/iprt/tar.h')
| -rw-r--r-- | include/iprt/tar.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/include/iprt/tar.h b/include/iprt/tar.h new file mode 100644 index 00000000..9acc0d40 --- /dev/null +++ b/include/iprt/tar.h @@ -0,0 +1,184 @@ +/** @file + * IPRT - Tar archive I/O. + */ + +/* + * Copyright (C) 2009-2022 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_tar_h +#define IPRT_INCLUDED_tar_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/cdefs.h> +#include <iprt/types.h> +#include <iprt/time.h> + +RT_C_DECLS_BEGIN + +/** @defgroup grp_rt_tar RTTar - Tar archive I/O + * @ingroup grp_rt + * + * @deprecated Only used for legacy code and writing. Migrate new code to the + * VFS interface, add the write part when needed. + * + * @{ + */ + +/** A tar handle */ +typedef R3PTRTYPE(struct RTTARINTERNAL *) RTTAR; +/** Pointer to a RTTAR interface handle. */ +typedef RTTAR *PRTTAR; +/** Nil RTTAR interface handle. */ +#define NIL_RTTAR ((RTTAR)0) + +/** A tar file handle */ +typedef R3PTRTYPE(struct RTTARFILEINTERNAL *) RTTARFILE; +/** Pointer to a RTTARFILE interface handle. */ +typedef RTTARFILE *PRTTARFILE; +/** Nil RTTARFILE interface handle. */ +#define NIL_RTTARFILE ((RTTARFILE)0) + +/** Maximum length of a tar filename, excluding the terminating '\0'. More + * does not fit into a tar record. */ +#define RTTAR_NAME_MAX 99 + +/** + * Creates a Tar archive. + * + * Use the mask to specify the access type. + * + * @returns IPRT status code. + * + * @param phTar Where to store the RTTAR handle. + * @param pszTarname The file name of the tar archive to create. Should + * not exist. + * @param fMode Open flags, i.e a combination of the RTFILE_O_* defines. + * The ACCESS, ACTION and DENY flags are mandatory! + */ +RTR3DECL(int) RTTarOpen(PRTTAR phTar, const char *pszTarname, uint32_t fMode); + +/** + * Close the Tar archive. + * + * @returns IPRT status code. + * + * @param hTar Handle to the RTTAR interface. + */ +RTR3DECL(int) RTTarClose(RTTAR hTar); + +/** + * Open a file in the Tar archive. + * + * @returns IPRT status code. + * + * @param hTar The handle of the tar archive. + * @param phFile Where to store the handle to the opened file. + * @param pszFilename Path to the file which is to be opened. (UTF-8) + * @param fOpen Open flags, i.e a combination of the RTFILE_O_* defines. + * The ACCESS, ACTION flags are mandatory! DENY flags + * are currently not supported. + * + * @remarks Write mode means append mode only. It is not possible to make + * changes to existing files. + * + * @remarks Currently it is not possible to open more than one file in write + * mode. Although open more than one file in read only mode (even when + * one file is opened in write mode) is always possible. + */ +RTR3DECL(int) RTTarFileOpen(RTTAR hTar, PRTTARFILE phFile, const char *pszFilename, uint32_t fOpen); + +/** + * Close the file opened by RTTarFileOpen. + * + * @returns IPRT status code. + * + * @param hFile The file handle to close. + */ +RTR3DECL(int) RTTarFileClose(RTTARFILE hFile); + +/** + * Read bytes from a file at a given offset. + * This function may modify the file position. + * + * @returns IPRT status code. + * + * @param hFile Handle to the file. + * @param off Where to read. + * @param pvBuf Where to put the bytes we read. + * @param cbToRead How much to read. + * @param pcbRead Where to return how much we actually read. If NULL + * an error will be returned for a partial read. + */ +RTR3DECL(int) RTTarFileReadAt(RTTARFILE hFile, uint64_t off, void *pvBuf, size_t cbToRead, size_t *pcbRead); + +/** + * Write bytes to a file at a given offset. + * This function may modify the file position. + * + * @returns IPRT status code. + * + * @param hFile Handle to the file. + * @param off Where to write. + * @param pvBuf What to write. + * @param cbToWrite How much to write. + * @param pcbWritten Where to return how much we actually wrote. If NULL + * an error will be returned for a partial write. + */ +RTR3DECL(int) RTTarFileWriteAt(RTTARFILE hFile, uint64_t off, const void *pvBuf, size_t cbToWrite, size_t *pcbWritten); + +/** + * Query the size of the file. + * + * @returns IPRT status code. + * + * @param hFile Handle to the file. + * @param pcbSize Where to store the filesize. + */ +RTR3DECL(int) RTTarFileGetSize(RTTARFILE hFile, uint64_t *pcbSize); + +/** + * Set the size of the file. + * + * @returns IPRT status code. + * + * @param hFile Handle to the file. + * @param cbSize The new file size. + */ +RTR3DECL(int) RTTarFileSetSize(RTTARFILE hFile, uint64_t cbSize); + +/** @} */ + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_tar_h */ + |