/*
* Disktest
* Copyright (c) International Business Machines Corp., 2001
*
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Please send e-mail to yardleyb@us.ibm.com if you have
* questions or comments.
*
* Project Website: TBD
*
* $Id: io.c,v 1.6 2008/02/14 08:22:23 subrata_modak Exp $
*
*/
#ifdef WINDOWS
#include <windows.h>
#include <winioctl.h>
#include <io.h>
#else
#include <sys/types.h>
#include <unistd.h>
#include <pthread.h>
#include <fcntl.h>
#endif
#include "defs.h"
#include "main.h"
#include "io.h"
long Write(fd_t fd, const void *buf, const unsigned long trsiz)
{
long tcnt;
#ifdef WINDOWS
WriteFile(fd, buf, trsiz, &tcnt, NULL);
#else
tcnt = write(fd, buf, trsiz);
#endif
return (tcnt);
}
long Read(fd_t fd, void *buf, const unsigned long trsiz)
{
long tcnt;
#ifdef WINDOWS
ReadFile(fd, buf, trsiz, &tcnt, NULL);
#else
tcnt = read(fd, buf, trsiz);
#endif
return (tcnt);
}
#ifdef WINDOWS
/*
* wrapper for file seeking in WINDOWS API to hind the ugle 32 bit
* interface of SetFile Pointer
*/
OFF_T FileSeek64(HANDLE hf, OFF_T distance, DWORD MoveMethod)
{
LARGE_INTEGER li;
li.QuadPart = distance;
li.LowPart = SetFilePointer(hf, li.LowPart, &li.HighPart, MoveMethod);
if (li.LowPart == 0xFFFFFFFF && GetLastError() != NO_ERROR) {
li.QuadPart = -1;
}
return li.QuadPart;
}
#endif
OFF_T SeekEnd(fd_t fd)
{
OFF_T return_lba;
#ifdef WINDOWS
return_lba = (OFF_T) FileSeek64(fd, 0, FILE_END);
#else
return_lba = (OFF_T) lseek64(fd, 0, SEEK_END);
#endif
return (return_lba);
}
OFF_T Seek(fd_t fd, OFF_T lba)
{
OFF_T return_lba;
#ifdef WINDOWS
return_lba = (OFF_T) FileSeek64(fd, lba, FILE_BEGIN);
#else
return_lba = (OFF_T) lseek64(fd, lba, SEEK_SET);
#endif
return (return_lba);
}
fd_t Open(const char *filespec, const OFF_T flags)
{
fd_t fd;
#ifdef WINDOWS
unsigned long OPEN_FLAGS = 0, OPEN_DISPO = 0, OPEN_READ_WRITE =
0, OPEN_SHARE = 0;
if ((flags & CLD_FLG_R) && !(flags & CLD_FLG_W)) {
OPEN_READ_WRITE |= GENERIC_READ;
OPEN_SHARE |= FILE_SHARE_READ;
} else if (!(flags & CLD_FLG_R) && (flags & CLD_FLG_W)) {
OPEN_READ_WRITE |= GENERIC_WRITE;
OPEN_SHARE |= FILE_SHARE_WRITE;
} else {
OPEN_READ_WRITE |= (GENERIC_READ | GENERIC_WRITE);
OPEN_SHARE |= (FILE_SHARE_READ | FILE_SHARE_WRITE);
}
#ifdef CLD_FLG_DIRECT
if (flags & CLD_FLG_DIRECT)
OPEN_FLAGS = FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH;
#endif
OPEN_DISPO = OPEN_EXISTING;
#ifdef CLD_FLG_RANDOM
if (flags & CLD_FLG_RANDOM)
OPEN_FLAGS |= FILE_FLAG_RANDOM_ACCESS;
#endif
#ifdef CLD_FLG_LINEAR
if (flags & CLD_FLG_LINEAR)
OPEN_FLAGS |= FILE_FLAG_SEQUENTIAL_SCAN;
#endif
#ifdef CLD_FLG_FILE
if (flags & CLD_FLG_FILE) {
OPEN_FLAGS |= FILE_ATTRIBUTE_ARCHIVE;
if (flags & CLD_FLG_W)
OPEN_DISPO = OPEN_ALWAYS;
}
#endif
fd = CreateFile(filespec,
OPEN_READ_WRITE,
OPEN_SHARE, NULL, OPEN_DISPO, OPEN_FLAGS, NULL);
#else
int OPEN_MASK = O_LARGEFILE;
if ((flags & CLD_FLG_R) && !(flags & CLD_FLG_W))
OPEN_MASK |= O_RDONLY;
else if (!(flags & CLD_FLG_R) && (flags & CLD_FLG_W))
OPEN_MASK |= O_WRONLY;
else
OPEN_MASK |= O_RDWR;
#ifdef CLD_FLG_FILE
if (flags & CLD_FLG_FILE)
OPEN_MASK |= O_CREAT;
#endif
#ifdef CLD_FLG_DIRECT
if (flags & CLD_FLG_DIRECT)
OPEN_MASK |= O_DIRECT;
#endif
fd = open(filespec, OPEN_MASK, 00600);
#endif
return (fd);
}
int Sync(fd_t fd)
{
#ifdef WINDOWS
if (FlushFileBuffers(fd) != TRUE) {
return -1;
}
return 0;
#else
return fsync(fd);
#endif
}