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libs/ck-libs/ampi/romio/adio/ad_hfs/ad_hfs_fcntl.c

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

#include "ad_hfs.h"
#include "adio_extern.h"

#ifndef HAVE_LSEEK64
#define lseek64 lseek
#endif
void ADIOI_HFS_Fcntl(ADIO_File fd, int flag, ADIO_Fcntl_t *fcntl_struct, int *error_code)
{
    int  i, ntimes, err;
    ADIO_Offset curr_fsize, alloc_size, size, len, done;
    ADIO_Status status;
    char *buf;
#ifndef PRINT_ERR_MSG
    static char myname[] = "ADIOI_HFS_FCNTL";
#endif

    switch(flag) {
    case ADIO_FCNTL_GET_FSIZE:
    fcntl_struct->fsize = lseek64(fd->fd_sys, 0, SEEK_END);
#ifdef HPUX
    if (fd->fp_sys_posn != -1) 
         lseek64(fd->fd_sys, fd->fp_sys_posn, SEEK_SET);
/* not required in SPPUX since there we use pread/pwrite */
#endif
    if (fcntl_struct->fsize == -1) {
#ifdef MPICH2
        *error_code = MPIR_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE, myname, __LINE__, MPI_ERR_IO, "**io", 
        "**io %s", strerror(errno));
#elif defined(PRINT_ERR_MSG)
        *error_code = MPI_ERR_UNKNOWN;
#else /* MPICH-1 */
        *error_code = MPIR_Err_setmsg(MPI_ERR_IO, MPIR_ADIO_ERROR,
                myname, "I/O Error", "%s", strerror(errno));
        ADIOI_Error(fd, *error_code, myname);       
#endif
    }
    else *error_code = MPI_SUCCESS;
    break;

    case ADIO_FCNTL_SET_DISKSPACE:
    /* will be called by one process only */

#ifdef HPUX
    err = prealloc64(fd->fd_sys, fcntl_struct->diskspace);
    /* prealloc64 works only if file is of zero length */
    if (err && (errno != ENOTEMPTY)) {
#ifdef MPICH2
        *error_code = MPIR_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE, myname, __LINE__, MPI_ERR_IO, "**io", 
        "**io %s", strerror(errno));
#elif defined(PRINT_ERR_MSG)
        *error_code = MPI_ERR_UNKNOWN;
#else
        *error_code = MPIR_Err_setmsg(MPI_ERR_IO, MPIR_ADIO_ERROR,
                  myname, "I/O Error", "%s", strerror(errno));
        ADIOI_Error(fd, *error_code, myname);
#endif
        return;
    }
    if (err && (errno == ENOTEMPTY)) {
#endif

#ifdef SPPUX
    /* SPPUX has no prealloc64. therefore, use prealloc
           if size < (2GB - 1), otherwise use long method. */
        if (fcntl_struct->diskspace <= 2147483647) {
        err = prealloc(fd->fd_sys, (off_t) fcntl_struct->diskspace);
        if (err && (errno != ENOTEMPTY)) {
#ifdef MPICH2
        *error_code = MPIR_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE, myname, __LINE__, MPI_ERR_IO, "**io",
            "**io %s", strerror(errno));
#elif defined(PRINT_ERR_MSG)
                *error_code = MPI_ERR_UNKNOWN;
#else
        *error_code = MPIR_Err_setmsg(MPI_ERR_IO, MPIR_ADIO_ERROR,
                  myname, "I/O Error", "%s", strerror(errno));
        ADIOI_Error(fd, *error_code, myname);
#endif
            return;
        }
    }    

    if ((fcntl_struct->diskspace > 2147483647) || 
        (err && (errno == ENOTEMPTY))) {
#endif
        ADIOI_GEN_Prealloc(fd,fcntl_struct->diskspace, error_code);
        }
        ADIOI_Free(buf);
#ifdef HPUX
        if (fd->fp_sys_posn != -1) 
        lseek64(fd->fd_sys, fd->fp_sys_posn, SEEK_SET);
        /* not required in SPPUX since there we use pread/pwrite */
#endif
    }
    *error_code = MPI_SUCCESS;
    break;

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

    default:
    FPRINTF(stderr, "Unknown flag passed to ADIOI_HFS_Fcntl\n");
    MPI_Abort(MPI_COMM_WORLD, 1);
    }
}

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