Home Research Papers Posters Manuals Talks Download People Help Internal

libs/ck-libs/ampi/romio/adio/ad_ntfs/ad_ntfs_fcntl.c

Go to the documentation of this file.

/* -*- Mode: C; c-basic-offset:4 ; -*- */
/* 
 *   Copyright (C) 1997 University of Chicago. 
 *   See COPYRIGHT notice in top-level directory.
 */

#include "ad_ntfs.h"
#include "adio_extern.h"

void ADIOI_NTFS_Fcntl(ADIO_File fd, int flag, ADIO_Fcntl_t *fcntl_struct, int *error_code)
{
    DWORD err;
    LONG dwTemp;
    static char myname[] = "ADIOI_NTFS_FCNTL";

    switch(flag)
    {
    case ADIO_FCNTL_GET_FSIZE:
    fcntl_struct->fsize = SetFilePointer(fd->fd_sys, 0, 0, FILE_END);
    if (fd->fp_sys_posn != -1) 
    {
        dwTemp = DWORDHIGH(fd->fp_sys_posn);
        if (SetFilePointer(fd->fd_sys, DWORDLOW(fd->fp_sys_posn), &dwTemp, FILE_BEGIN) == INVALID_SET_FILE_POINTER)
        {
        char errMsg[ADIOI_NTFS_ERR_MSG_MAX];
        err = GetLastError();
        ADIOI_NTFS_Strerror(err, errMsg, ADIOI_NTFS_ERR_MSG_MAX);
        if (err != NO_ERROR)
        {
            *error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
            myname, __LINE__, MPI_ERR_IO,
            "**io", "**io %s", errMsg);
            return;
        }
        }
    }
    /* --BEGIN ERROR HANDLING-- */
    if (fcntl_struct->fsize == INVALID_SET_FILE_POINTER)
    {
        char errMsg[ADIOI_NTFS_ERR_MSG_MAX];
        dwTemp = GetLastError();
        ADIOI_NTFS_Strerror(dwTemp, errMsg, ADIOI_NTFS_ERR_MSG_MAX);
        *error_code = MPIO_Err_create_code(MPI_SUCCESS,
                           MPIR_ERR_RECOVERABLE, myname,
                           __LINE__, MPI_ERR_IO, "**io",
                           "**io %s", errMsg);
        return;
    }
    /* --END ERROR HANDLING-- */
    *error_code = MPI_SUCCESS;
    break;

    case ADIO_FCNTL_SET_DISKSPACE:
    ADIOI_GEN_Prealloc(fd, fcntl_struct->diskspace, error_code);
    break;

    case ADIO_FCNTL_SET_ATOMICITY:
    fd->atomicity = (fcntl_struct->atomicity == 0) ? 0 : 1;
    *error_code = MPI_SUCCESS;
    /*
    fd->atomicity = 0;
    *error_code = MPI_ERR_UNSUPPORTED_OPERATION;
    */
    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-- */
    }
}

---