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/*
* Copyright (c) 2004-2008 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 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) 2014 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
* These symbols are in a file by themselves to provide nice linker
* semantics. Since linkers generally pull in symbols by object
* files, keeping these symbols as the only symbols in this file
* prevents utility programs such as "ompi_info" from having to import
* entire components just to query their version and parameters.
*/
#include "opal/types.h"
#include "orte_config.h"
#include "orte/constants.h"
#include "orte/mca/common/alps/common_alps.h"
#include <stdio.h>
#include <unistd.h>
#include <sys/syscall.h>
/*
* determine whether or not calling process is in a Cray PAGG container
*/
int orte_common_alps_proc_in_pagg(bool *flag)
{
int rc = ORTE_SUCCESS;
const char proc_job_file[]="/proc/job";
FILE *fd = NULL, *fd_task_is_app = NULL;
char task_is_app_fname[PATH_MAX];
if (flag == NULL) {
return ORTE_ERR_BAD_PARAM;
}
fd = fopen(proc_job_file, "r");
if (fd == NULL) {
*flag = 0;
} else {
snprintf(task_is_app_fname,sizeof(task_is_app_fname),
"/proc/self/task/%ld/task_is_app",syscall(SYS_gettid));
fd_task_is_app = fopen(task_is_app_fname, "r");
if (fd_task_is_app != NULL) { /* okay we're in a PAGG container,
and we are an app task (not just a process
running on a mom node, for example), */
*flag = 1;
fclose(fd_task_is_app);
} else {
*flag = 0;
}
fclose(fd);
}
return rc;
}
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