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185 lines
4.0 KiB
185 lines
4.0 KiB
/*
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* Disktest
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* Copyright (c) International Business Machines Corp., 2001
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Please send e-mail to yardleyb@us.ibm.com if you have
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* questions or comments.
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*
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* Project Website: TBD
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*
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* $Id: io.c,v 1.6 2008/02/14 08:22:23 subrata_modak Exp $
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*
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*/
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#ifdef WINDOWS
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#include <windows.h>
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#include <winioctl.h>
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#include <io.h>
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#else
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#include <sys/types.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <fcntl.h>
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#endif
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#include "defs.h"
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#include "main.h"
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#include "io.h"
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long Write(fd_t fd, const void *buf, const unsigned long trsiz)
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{
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long tcnt;
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#ifdef WINDOWS
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WriteFile(fd, buf, trsiz, &tcnt, NULL);
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#else
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tcnt = write(fd, buf, trsiz);
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#endif
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return (tcnt);
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}
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long Read(fd_t fd, void *buf, const unsigned long trsiz)
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{
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long tcnt;
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#ifdef WINDOWS
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ReadFile(fd, buf, trsiz, &tcnt, NULL);
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#else
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tcnt = read(fd, buf, trsiz);
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#endif
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return (tcnt);
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}
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#ifdef WINDOWS
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/*
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* wrapper for file seeking in WINDOWS API to hind the ugle 32 bit
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* interface of SetFile Pointer
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*/
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OFF_T FileSeek64(HANDLE hf, OFF_T distance, DWORD MoveMethod)
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{
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LARGE_INTEGER li;
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li.QuadPart = distance;
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li.LowPart = SetFilePointer(hf, li.LowPart, &li.HighPart, MoveMethod);
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if (li.LowPart == 0xFFFFFFFF && GetLastError() != NO_ERROR) {
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li.QuadPart = -1;
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}
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return li.QuadPart;
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}
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#endif
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OFF_T SeekEnd(fd_t fd)
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{
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OFF_T return_lba;
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#ifdef WINDOWS
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return_lba = (OFF_T) FileSeek64(fd, 0, FILE_END);
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#else
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return_lba = (OFF_T) lseek64(fd, 0, SEEK_END);
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#endif
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return (return_lba);
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}
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OFF_T Seek(fd_t fd, OFF_T lba)
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{
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OFF_T return_lba;
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#ifdef WINDOWS
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return_lba = (OFF_T) FileSeek64(fd, lba, FILE_BEGIN);
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#else
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return_lba = (OFF_T) lseek64(fd, lba, SEEK_SET);
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#endif
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return (return_lba);
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}
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fd_t Open(const char *filespec, const OFF_T flags)
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{
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fd_t fd;
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#ifdef WINDOWS
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unsigned long OPEN_FLAGS = 0, OPEN_DISPO = 0, OPEN_READ_WRITE =
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0, OPEN_SHARE = 0;
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if ((flags & CLD_FLG_R) && !(flags & CLD_FLG_W)) {
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OPEN_READ_WRITE |= GENERIC_READ;
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OPEN_SHARE |= FILE_SHARE_READ;
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} else if (!(flags & CLD_FLG_R) && (flags & CLD_FLG_W)) {
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OPEN_READ_WRITE |= GENERIC_WRITE;
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OPEN_SHARE |= FILE_SHARE_WRITE;
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} else {
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OPEN_READ_WRITE |= (GENERIC_READ | GENERIC_WRITE);
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OPEN_SHARE |= (FILE_SHARE_READ | FILE_SHARE_WRITE);
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}
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#ifdef CLD_FLG_DIRECT
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if (flags & CLD_FLG_DIRECT)
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OPEN_FLAGS = FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH;
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#endif
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OPEN_DISPO = OPEN_EXISTING;
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#ifdef CLD_FLG_RANDOM
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if (flags & CLD_FLG_RANDOM)
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OPEN_FLAGS |= FILE_FLAG_RANDOM_ACCESS;
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#endif
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#ifdef CLD_FLG_LINEAR
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if (flags & CLD_FLG_LINEAR)
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OPEN_FLAGS |= FILE_FLAG_SEQUENTIAL_SCAN;
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#endif
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#ifdef CLD_FLG_FILE
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if (flags & CLD_FLG_FILE) {
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OPEN_FLAGS |= FILE_ATTRIBUTE_ARCHIVE;
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if (flags & CLD_FLG_W)
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OPEN_DISPO = OPEN_ALWAYS;
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}
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#endif
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fd = CreateFile(filespec,
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OPEN_READ_WRITE,
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OPEN_SHARE, NULL, OPEN_DISPO, OPEN_FLAGS, NULL);
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#else
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int OPEN_MASK = O_LARGEFILE;
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if ((flags & CLD_FLG_R) && !(flags & CLD_FLG_W))
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OPEN_MASK |= O_RDONLY;
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else if (!(flags & CLD_FLG_R) && (flags & CLD_FLG_W))
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OPEN_MASK |= O_WRONLY;
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else
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OPEN_MASK |= O_RDWR;
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#ifdef CLD_FLG_FILE
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if (flags & CLD_FLG_FILE)
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OPEN_MASK |= O_CREAT;
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#endif
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#ifdef CLD_FLG_DIRECT
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if (flags & CLD_FLG_DIRECT)
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OPEN_MASK |= O_DIRECT;
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#endif
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fd = open(filespec, OPEN_MASK, 00600);
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#endif
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return (fd);
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}
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int Sync(fd_t fd)
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{
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#ifdef WINDOWS
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if (FlushFileBuffers(fd) != TRUE) {
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return -1;
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}
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return 0;
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#else
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return fsync(fd);
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#endif
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}
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