root/ompi/mca/io/romio321/romio/adio/ad_nfs/ad_nfs_fcntl.c

DEFINITIONS

1. ADIOI_NFS_Fcntl

   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_nfs.h"
   9 #include "adio_extern.h"
  10 /* #ifdef MPISGI
  11 #include "mpisgi2.h"
  12 #endif */
  13 
  14 void ADIOI_NFS_Fcntl(ADIO_File fd, int flag, ADIO_Fcntl_t *fcntl_struct, int *error_code)
  15 {
  16     static char myname[] = "ADIOI_NFS_FCNTL";
  17 
  18     switch(flag) {
  19     case ADIO_FCNTL_GET_FSIZE:
  20         ADIOI_READ_LOCK(fd, 0, SEEK_SET, 1);
  21 #ifdef ADIOI_MPE_LOGGING
  22         MPE_Log_event( ADIOI_MPE_lseek_a, 0, NULL );
  23 #endif
  24         fcntl_struct->fsize = lseek(fd->fd_sys, 0, SEEK_END);
  25 #ifdef ADIOI_MPE_LOGGING
  26         MPE_Log_event( ADIOI_MPE_lseek_b, 0, NULL );
  27 #endif
  28         ADIOI_UNLOCK(fd, 0, SEEK_SET, 1);
  29         if (fd->fp_sys_posn != -1) {
  30 #ifdef ADIOI_MPE_LOGGING
  31             MPE_Log_event( ADIOI_MPE_lseek_a, 0, NULL );
  32 #endif
  33             lseek(fd->fd_sys, fd->fp_sys_posn, SEEK_SET);
  34 #ifdef ADIOI_MPE_LOGGING
  35             MPE_Log_event( ADIOI_MPE_lseek_b, 0, NULL );
  36 #endif
  37         }
  38         if (fcntl_struct->fsize == -1) {
  39             *error_code = MPIO_Err_create_code(MPI_SUCCESS,
  40                                                MPIR_ERR_RECOVERABLE, myname,
  41                                                __LINE__, MPI_ERR_IO, "**io",
  42                                                "**io %s", strerror(errno));
  43         }
  44         else *error_code = MPI_SUCCESS;
  45         break;
  46 
  47     case ADIO_FCNTL_SET_DISKSPACE:
  48         ADIOI_GEN_Prealloc(fd, fcntl_struct->diskspace, error_code);
  49         break;
  50 
  51     case ADIO_FCNTL_SET_ATOMICITY:
  52         fd->atomicity = (fcntl_struct->atomicity == 0) ? 0 : 1;
  53         *error_code = MPI_SUCCESS;
  54         break;
  55 
  56     default:
  57         /* --BEGIN ERROR HANDLING-- */
  58         *error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
  59                                            myname, __LINE__,
  60                                            MPI_ERR_ARG, 
  61                                            "**flag", "**flag %d", flag);
  62         return;
  63         /* --END ERROR HANDLING-- */
  64     }
  65 }