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-rw-r--r--store/source/fileunx.hxx339
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diff --git a/store/source/fileunx.hxx b/store/source/fileunx.hxx
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-/*************************************************************************
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * Copyright 2008 by Sun Microsystems, Inc.
- *
- * OpenOffice.org - a multi-platform office productivity suite
- *
- * $RCSfile: fileunx.hxx,v $
- * $Revision: 1.8 $
- *
- * This file is part of OpenOffice.org.
- *
- * OpenOffice.org is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 3
- * only, as published by the Free Software Foundation.
- *
- * OpenOffice.org 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 Lesser General Public License version 3 for more details
- * (a copy is included in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU Lesser General Public License
- * version 3 along with OpenOffice.org. If not, see
- * <http://www.openoffice.org/license.html>
- * for a copy of the LGPLv3 License.
- *
- ************************************************************************/
-
-#ifndef INCLUDED_STORE_FILEUNX_HXX
-#define INCLUDED_STORE_FILEUNX_HXX
-
-#define _USE_UNIX98 /* _XOPEN_SOURCE=500 */
-#include <unistd.h>
-
-#include <errno.h>
-#include <fcntl.h>
-
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#if defined(FREEBSD) || defined(NETBSD) || defined(MACOSX)
-#define EDEADLOCK EDEADLK
-#endif /* FREEBSD || NETBSD || MACOSX */
-
-typedef int HSTORE;
-
-/*========================================================================
- *
- * File I/O (inline) implementation.
- *
- *======================================================================*/
-/*
- * __store_errcode_map.
- */
-static const __store_errcode_mapping_st __store_errcode_map[] =
-{
- { 0, store_E_None },
- { ENOENT, store_E_NotExists },
- { EACCES, store_E_AccessViolation },
- { EPERM, store_E_AccessViolation },
- { EAGAIN, store_E_LockingViolation },
-#if defined(EDEADLOCK)
- { EDEADLOCK, store_E_LockingViolation },
-#endif /* EDEADLOCK */
- { EBADF, store_E_InvalidHandle },
- { EINVAL, store_E_InvalidParameter },
- { ENOSPC, store_E_OutOfSpace },
-};
-
-/*
- * __store_errno.
- */
-inline sal_Int32 __store_errno (void)
-{
- return (sal_Int32)errno;
-}
-
-/*
- * __store_malign.
- */
-#if defined(FREEBSD) || defined(LINUX) || defined(MACOSX)
-inline sal_uInt32 __store_malign (void)
-{
- return (sal_uInt32)::getpagesize();
-}
-#elif defined(IRIX) || defined(SOLARIS)
-inline sal_uInt32 __store_malign (void)
-{
- return (sal_uInt32)::sysconf (_SC_PAGESIZE);
-}
-#else
-inline sal_uInt32 __store_malign (void)
-{
- return (sal_uInt32)(-1);
-}
-#endif /* FREEBSD || IRIX || LINUX || SOLARIS || MACOSX*/
-
-/*
- * __store_fmap (readonly).
- */
-inline HSTORE __store_fmap (HSTORE hFile)
-{
- // Avoid hMap = dup (hFile); may result in EMFILE.
- return hFile;
-}
-
-/*
- * __store_funmap.
- */
-inline void __store_funmap (HSTORE)
-{
- // Nothing to do, see '__store_fmap()'.
-}
-
-/*
- * __store_mmap (readonly, shared).
- */
-inline sal_uInt8* __store_mmap (HSTORE h, sal_uInt32 k, sal_uInt32 n)
-{
- void * p = ::mmap (NULL, (size_t)n, PROT_READ, MAP_SHARED, h, (off_t)k);
- return ((p != MAP_FAILED) ? (sal_uInt8*)p : 0);
-}
-
-/*
- * __store_munmap.
- */
-inline void __store_munmap (sal_uInt8 *p, sal_uInt32 n)
-{
- (void)::munmap ((char *)p, (size_t)n);
-}
-
-/*
- * __store_fopen.
- */
-inline storeError __store_fopen (
- const sal_Char *pszName, sal_uInt32 nMode, HSTORE &rhFile)
-{
- // Access mode.
- int nAccessMode = O_RDONLY;
-
- if (nMode & store_File_OpenWrite)
- nAccessMode = O_RDWR;
-
- if (nAccessMode == O_RDONLY)
- nMode |= store_File_OpenNoCreate;
-
- if ((!(nMode & store_File_OpenNoCreate)) && (!(nAccessMode == O_RDONLY)))
- nAccessMode |= O_CREAT;
-
- if (nMode & store_File_OpenTruncate)
- nAccessMode |= O_TRUNC;
-
- // Share mode.
- int nShareMode = S_IREAD | S_IROTH | S_IRGRP;
-
- if (nMode & store_File_OpenWrite)
- nShareMode |= (S_IWRITE | S_IWOTH | S_IWGRP);
-
- // Create file handle.
- if ((rhFile = ::open (pszName, nAccessMode, nShareMode)) < 0)
- {
- rhFile = 0;
- return ERROR_FROM_NATIVE(errno);
- }
-
- // Acquire (advisory) Lock (Multiple Reader | Single Writer)
- struct flock lock;
-
- if (nMode & store_File_OpenWrite)
- lock.l_type = F_WRLCK;
- else
- lock.l_type = F_RDLCK;
-
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 0;
-
- if (::fcntl (rhFile, F_SETLK, &lock) < 0)
- {
- // Save original result.
- storeError result;
- if ((errno == EACCES) || (errno == EAGAIN))
- result = store_E_LockingViolation;
- else
- result = ERROR_FROM_NATIVE(errno);
-
- // Close file handle.
- (void)::close (rhFile); rhFile = 0;
-
- // Finish.
- return (result);
- }
-
- int nFlags = ::fcntl (rhFile, F_GETFD, 0);
- if (!(nFlags < 0))
- {
- // Set close-on-exec flag.
- nFlags |= FD_CLOEXEC;
- (void)::fcntl (rhFile, F_SETFD, nFlags);
- }
- return store_E_None;
-}
-
-/*
- * __store_fread.
- */
-inline storeError __store_fread (
- HSTORE h, sal_uInt32 offset, void *p, sal_uInt32 n, sal_uInt32 &k)
-{
-#if defined(LINUX) || defined(SOLARIS)
-
- k = (sal_uInt32)::pread (h, (char*)p, (size_t)n, (off_t)offset);
- if ((k == (sal_uInt32)(-1)) && (errno == EOVERFLOW))
- {
- /*
- * Workaround for 'pread()' failure at end-of-file:
- *
- * Some 'pread()'s fail with EOVERFLOW when reading at (or past)
- * end-of-file, different from 'lseek() + read()' behaviour.
- * Returning '0 bytes read' and 'store_E_None' instead.
- */
- k = 0;
- }
-
-#else /* LINUX || SOLARIS */
-
- if (::lseek (h, (off_t)offset, SEEK_SET) < 0)
- return ERROR_FROM_NATIVE(errno);
-
- k = (sal_uInt32)::read (h, (char *)p, (size_t)n);
-
-#endif /* LINUX || SOLARIS */
-
- if (k == (sal_uInt32)(-1))
- return ERROR_FROM_NATIVE(errno);
- else
- return store_E_None;
-}
-
-/*
- * __store_fwrite.
- */
-inline storeError __store_fwrite (
- HSTORE h, sal_uInt32 offset, const void *p, sal_uInt32 n, sal_uInt32 &k)
-{
-#if defined(LINUX) || defined(SOLARIS)
-
- k = (sal_uInt32)::pwrite (h, (char*)p, (size_t)n, (off_t)offset);
-
-#else /* LINUX || SOLARIS */
-
- if (::lseek (h, (off_t)offset, SEEK_SET) < 0)
- return ERROR_FROM_NATIVE(errno);
-
- k = (sal_uInt32)::write (h, (char *)p, (size_t)n);
-
-#endif /* LINUX || SOLARIS */
-
- if (k == (sal_uInt32)(-1))
- return ERROR_FROM_NATIVE(errno);
- else
- return store_E_None;
-}
-
-/*
- * __store_fsize.
- */
-inline storeError __store_fsize (HSTORE h, sal_uInt32 &k)
-{
- k = (sal_uInt32)::lseek (h, (off_t)0, SEEK_END);
- if (k == (sal_uInt32)(-1))
- return ERROR_FROM_NATIVE(errno);
- else
- return store_E_None;
-}
-
-/*
- * __store_ftrunc.
- */
-inline storeError __store_ftrunc (HSTORE h, sal_uInt32 n)
-{
- if (::ftruncate (h, (off_t)n) < 0)
- {
- // Save original result.
- storeError result = ERROR_FROM_NATIVE(errno);
-
- // Check against current size. Fail upon 'shrink'.
- sal_uInt32 k = (sal_uInt32)::lseek (h, (off_t)0, SEEK_END);
- if (k == (sal_uInt32)(-1))
- return (result);
- if (n <= k)
- return (result);
-
- // Try 'expand' via 'lseek()' and 'write()'.
- if (::lseek (h, (off_t)(n - 1), SEEK_SET) < 0)
- return (result);
- if (::write (h, (char*)"", (size_t)1) < 0)
- return (result);
- }
- return store_E_None;
-}
-
-/*
- * __store_fsync.
- */
-inline storeError __store_fsync (HSTORE h)
-{
- if (::fsync (h) == -1)
- return ERROR_FROM_NATIVE(errno);
- else
- return store_E_None;
-}
-
-/*
- * __store_fclose.
- */
-inline storeError __store_fclose (HSTORE h)
-{
- // Release (advisory) Lock (Multiple Reader | Single Writer)
- struct flock lock;
-
- lock.l_type = F_UNLCK;
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 0;
-
- (void)::fcntl (h, F_SETLK, &lock);
-
- // Close file handle.
- if (::close (h) == -1)
- return ERROR_FROM_NATIVE(errno);
- else
- return store_E_None;
-}
-
-#endif /* INCLUDED_STORE_FILEUNX_HXX */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 13:24:59 +0000