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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_nfs.h"
void ADIOI_NFS_Open(ADIO_File fd, int *error_code)
{
int perm, amode;
mode_t old_mask;
static char myname[] = "ADIOI_NFS_OPEN";
if (fd->perm == ADIO_PERM_NULL) {
old_mask = umask(022);
umask(old_mask);
perm = old_mask ^ 0666;
}
else perm = fd->perm;
amode = 0;
if (fd->access_mode & ADIO_CREATE)
amode = amode | O_CREAT;
if (fd->access_mode & ADIO_RDONLY)
amode = amode | O_RDONLY;
if (fd->access_mode & ADIO_WRONLY)
amode = amode | O_WRONLY;
if (fd->access_mode & ADIO_RDWR)
amode = amode | O_RDWR;
if (fd->access_mode & ADIO_EXCL)
amode = amode | O_EXCL;
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_open_a, 0, NULL );
#endif
fd->fd_sys = open(fd->filename, amode, perm);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_open_b, 0, NULL );
#endif
fd->fd_direct = -1;
if ((fd->fd_sys != -1) && (fd->access_mode & ADIO_APPEND)) {
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_lseek_a, 0, NULL );
#endif
fd->fp_ind = fd->fp_sys_posn = lseek(fd->fd_sys, 0, SEEK_END);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_lseek_b, 0, NULL );
#endif
}
if (fd->fd_sys == -1) {
*error_code = ADIOI_Err_create_code(myname, fd->filename, errno);
}
else *error_code = MPI_SUCCESS;
}
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