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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* Copyright (C) 1997 University of Chicago.
* See COPYRIGHT notice in top-level directory.
*/
#include "ad_xfs.h"
#include "adio_extern.h"
#include <sys/ioctl.h>
#ifndef HAVE_LSEEK64
#define lseek64 lseek
#endif
void ADIOI_XFS_Fcntl(ADIO_File fd, int flag, ADIO_Fcntl_t *fcntl_struct, int *error_code)
{
int i, err;
#if defined(LINUX) && defined(MPISGI)
struct xfs_flock64 fl;
#else
struct flock64 fl;
#endif
static char myname[] = "ADIOI_XFS_FCNTL";
switch(flag) {
case ADIO_FCNTL_GET_FSIZE:
fcntl_struct->fsize = lseek64(fd->fd_sys, 0, SEEK_END);
if (fcntl_struct->fsize == -1) {
*error_code = MPIO_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE, myname,
__LINE__, MPI_ERR_IO, "**io",
"**io %s", strerror(errno));
}
else *error_code = MPI_SUCCESS;
break;
case ADIO_FCNTL_SET_DISKSPACE:
i = 0;
fl.l_start = 0;
fl.l_whence = SEEK_SET;
fl.l_len = fcntl_struct->diskspace;
#if defined(LINUX) && defined(MPISGI)
err = ioctl(fd->fd_sys, XFS_IOC_RESVSP64, &fl);
#else
err = fcntl(fd->fd_sys, F_RESVSP64, &fl);
#endif
if (err) i = 1;
if (fcntl_struct->diskspace > lseek64(fd->fd_sys, 0, SEEK_END)) {
/* also need to set the file size */
err = ftruncate64(fd->fd_sys, fcntl_struct->diskspace);
if (err) i = 1;
}
if (i == 1) {
*error_code = MPIO_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE, myname,
__LINE__, MPI_ERR_IO, "**io",
"**io %s", strerror(errno));
}
else *error_code = MPI_SUCCESS;
break;
case ADIO_FCNTL_SET_ATOMICITY:
fd->atomicity = (fcntl_struct->atomicity == 0) ? 0 : 1;
*error_code = MPI_SUCCESS;
break;
default:
/* --BEGIN ERROR HANDLING-- */
*error_code = MPIO_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE,
myname, __LINE__,
MPI_ERR_ARG,
"**flag", "**flag %d", flag);
return;
/* --END ERROR HANDLING-- */
}
}
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