root/ompi/mca/io/romio321/romio/adio/ad_hfs/ad_hfs_open.c

DEFINITIONS

1. ADIOI_HFS_Open

   1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
   2 /* 
   3  *
   4  *   Copyright (C) 1997 University of Chicago. 
   5  *   See COPYRIGHT notice in top-level directory.
   6  */
   7 
   8 #include "ad_hfs.h"
   9 
  10 #ifndef HAVE_LSEEK64
  11 #define lseek64 lseek
  12 #endif
  13 
  14 void ADIOI_HFS_Open(ADIO_File fd, int *error_code)
  15 {
  16     int perm, old_mask, amode;
  17 #ifndef PRINT_ERR_MSG
  18     static char myname[] = "ADIOI_HFS_OPEN";
  19 #endif
  20 
  21     if (fd->perm == ADIO_PERM_NULL) {
  22         old_mask = umask(022);
  23         umask(old_mask);
  24         perm = old_mask ^ 0666;
  25     }
  26     else perm = fd->perm;
  27 
  28     amode = 0;
  29     if (fd->access_mode & ADIO_CREATE)
  30         amode = amode | O_CREAT;
  31     if (fd->access_mode & ADIO_RDONLY)
  32         amode = amode | O_RDONLY;
  33     if (fd->access_mode & ADIO_WRONLY)
  34         amode = amode | O_WRONLY;
  35     if (fd->access_mode & ADIO_RDWR)
  36         amode = amode | O_RDWR;
  37     if (fd->access_mode & ADIO_EXCL)
  38         amode = amode | O_EXCL;
  39 
  40     fd->fd_sys = open64(fd->filename, amode, perm);
  41     fd->fd_direct = -1;
  42 
  43     if ((fd->fd_sys != -1) && (fd->access_mode & ADIO_APPEND)) {
  44         fd->fp_ind = lseek64(fd->fd_sys, 0, SEEK_END);
  45 #ifdef HPUX
  46         fd->fp_sys_posn = fd->fp_ind;
  47 #endif
  48     }
  49 
  50 #ifdef SPPUX
  51         fd->fp_sys_posn = -1;  /* set it to null bec. we use pread, pwrite*/
  52 #endif
  53 
  54         if (fd->fd_sys == -1 ) {
  55 #ifdef MPICH
  56             *error_code = MPIR_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE, myname, __LINE__, MPI_ERR_IO, "**io", 
  57                 "**io %s", strerror(errno));
  58 #elif defined(PRINT_ERR_MSG)
  59             *error_code = MPI_ERR_UNKNOWN;
  60 #else /* MPICH-1 */
  61         *error_code = MPIR_Err_setmsg(MPI_ERR_IO, MPIR_ADIO_ERROR,
  62                               myname, "I/O Error", "%s", strerror(errno));
  63         ADIOI_Error(ADIO_FILE_NULL, *error_code, myname);           
  64 #endif
  65     }
  66     else *error_code = MPI_SUCCESS;
  67 }