121 строка
3.4 KiB
C
121 строка
3.4 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2011 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* Copyright (c) 2008-2014 University of Houston. All rights reserved.
|
|
* Copyright (c) 2015 Research Organization for Information Science
|
|
* and Technology (RIST). All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
|
|
#include "ompi_config.h"
|
|
#include "fs_plfs.h"
|
|
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include "mpi.h"
|
|
#include "ompi/constants.h"
|
|
#include "ompi/mca/fs/fs.h"
|
|
#include "ompi/communicator/communicator.h"
|
|
#include "ompi/info/info.h"
|
|
|
|
#include <sys/ioctl.h>
|
|
|
|
/*
|
|
* file_open_plfs
|
|
*
|
|
* Function: - opens a new file
|
|
* Accepts: - same arguments as MPI_File_open()
|
|
* Returns: - Success if new file handle
|
|
*/
|
|
int
|
|
mca_fs_plfs_file_open (struct ompi_communicator_t *comm,
|
|
const char* filename,
|
|
int access_mode,
|
|
struct ompi_info_t *info,
|
|
mca_io_ompio_file_t *fh)
|
|
{
|
|
int rank;
|
|
int amode;
|
|
int old_mask, perm;
|
|
plfs_error_t plfs_ret;
|
|
Plfs_fd *pfd = NULL;
|
|
char wpath[1024];
|
|
size_t len = sizeof(int);
|
|
char key[] = "num_hostdirs";
|
|
|
|
rank = ompi_comm_rank ( comm );
|
|
|
|
getcwd( wpath, sizeof(wpath) );
|
|
sprintf( wpath,"%s/%s",wpath,filename );
|
|
|
|
if (OMPIO_PERM_NULL == fh->f_perm) {
|
|
old_mask = umask(022);
|
|
umask(old_mask);
|
|
perm = old_mask ^ 0666;
|
|
}
|
|
else {
|
|
perm = fh->f_perm;
|
|
}
|
|
|
|
amode = 0;
|
|
|
|
if (access_mode & MPI_MODE_RDONLY)
|
|
amode = amode | O_RDONLY;
|
|
if (access_mode & MPI_MODE_WRONLY)
|
|
amode = amode | O_WRONLY;
|
|
if (access_mode & MPI_MODE_RDWR)
|
|
amode = amode | O_RDWR;
|
|
if (access_mode & MPI_MODE_EXCL) {
|
|
if( is_plfs_path(wpath) == 1 ) { //the file already exists
|
|
return OMPI_ERROR;
|
|
}
|
|
}
|
|
|
|
if (0 == rank) {
|
|
/* MODE_CREATE and MODE_EXCL can only be set by one process */
|
|
if (access_mode & MPI_MODE_CREATE)
|
|
amode = amode | O_CREAT;
|
|
|
|
plfs_ret = plfs_open( &pfd, wpath, amode, 0, perm, NULL );
|
|
fh->f_fs_ptr = pfd;
|
|
}
|
|
|
|
comm->c_coll.coll_bcast ( &plfs_ret, 1, MPI_INT, 0, comm, comm->c_coll.coll_bcast_module);
|
|
if ( PLFS_SUCCESS != plfs_ret ) {
|
|
return OMPI_ERROR;
|
|
}
|
|
|
|
if (0 != rank) {
|
|
plfs_ret = plfs_open( &pfd, wpath, amode, 0, perm, NULL );
|
|
if (PLFS_SUCCESS != plfs_ret) {
|
|
opal_output(0, "fs_plfs_file_open: Error in plfs_open:\n%s\n", strplfserr(plfs_ret));
|
|
return OMPI_ERROR;
|
|
}
|
|
else {
|
|
fh->f_fs_ptr = pfd;
|
|
}
|
|
}
|
|
|
|
if (mca_fs_plfs_num_hostdir > 0) {
|
|
plfs_ret = plfs_setxattr( pfd, &mca_fs_plfs_num_hostdir, key, len );
|
|
if (PLFS_SUCCESS != plfs_ret) {
|
|
opal_output(0, "fs_plfs_file_open: Error in plfs_setxattr:\n%s\n", strplfserr(plfs_ret));
|
|
return OMPI_ERROR;
|
|
}
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|