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openmpi/orte/util/session_dir.c
Ralph Castain d70e2e8c2b Merge the ORTE devel branch into the main trunk. Details of what this means will be circulated separately. 
Remains to be tested to ensure everything came over cleanly, so please continue to withhold commits a little longer

This commit was SVN r17632.
2008-02-28 01:57:57 +00:00

690 строки
20 KiB
C
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/*
* Copyright (c) 2004-2005 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
*/
#include "orte_config.h"
#include "orte/constants.h"
#include <stdio.h>
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif /* HAVE_SYS_PARAM_H */
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif /* HAVE_SYS_TYPES_H */
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <errno.h>
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif /* HAVE_DIRENT_H */
#include "opal/util/output.h"
#include "opal/util/os_path.h"
#include "opal/util/os_dirpath.h"
#include "opal/util/basename.h"
#include "orte/util/sys_info.h"
#include "orte/util/proc_info.h"
#include "orte/util/name_fns.h"
#include "orte/mca/errmgr/errmgr.h"
#include "orte/runtime/runtime.h"
#include "orte/runtime/orte_globals.h"
#include "orte/util/session_dir.h"
/*******************************
* Local function Declarations
*******************************/
static int orte_create_dir(char *directory);
static bool orte_dir_check_file(const char *root, const char *path);
static bool orte_dir_check_file_output(const char *root, const char *path);
#ifdef __WINDOWS__
#define OMPI_DEFAULT_TMPDIR "C:\\TEMP"
#else
#define OMPI_DEFAULT_TMPDIR "/tmp"
#endif
#define OMPI_PRINTF_FIX_STRING(a) ((NULL == a) ? "(null)" : a)
/****************************
* Funcationality
****************************/
/*
* Check and create the directory requested
*/
static int orte_create_dir(char *directory)
{
mode_t my_mode = S_IRWXU; /* I'm looking for full rights */
int ret;
/* Sanity check before creating the directory with the proper mode,
* Make sure it doesn't exist already */
if( ORTE_ERR_NOT_FOUND != (ret = opal_os_dirpath_access(directory, my_mode)) ) {
/* Failure because opal_os_dirpath_access() indicated that either:
* - The directory exists and we can access it (no need to create it again),
* return OPAL_SUCCESS, or
* - don't have access rights, return OPAL_ERROR
*/
if (ORTE_SUCCESS != ret) {
ORTE_ERROR_LOG(ret);
}
return(ret);
}
/* Get here if the directory doesn't exist, so create it */
if (ORTE_SUCCESS != (ret = opal_os_dirpath_create(directory, my_mode))) {
ORTE_ERROR_LOG(ret);
}
return ret;
}
/*
* Construct the fullpath to the session directory
*/
int
orte_session_dir_get_name(char **fulldirpath,
char **return_prefix, /* This will come back as the valid tmp dir */
char **return_frontend,
char *usr, char *hostid,
char *batchid,
char *job, char *proc) {
char *hostname = NULL,
*batchname = NULL,
*sessions = NULL,
*user = NULL,
*prefix = NULL,
*frontend = NULL;
bool prefix_provided = false;
int exit_status = ORTE_SUCCESS;
/* Ensure that system info is set */
orte_sys_info();
/*
* set the 'user' value
*/
if( NULL != usr) { /* User specified version */
user = strdup(usr);
}
else { /* check if it is set elsewhere */
if( NULL != orte_system_info.user)
user = strdup(orte_system_info.user);
else {
/* Couldn't find it, so fail */
ORTE_ERROR_LOG(ORTE_ERR_BAD_PARAM);
exit_status = ORTE_ERR_BAD_PARAM;
goto cleanup;
}
}
/*
* set the 'hostname'
*/
if( NULL != hostid) { /* User specified version */
hostname = strdup(hostid);
}
else { /* check if it is set elsewhere */
if( NULL != orte_system_info.nodename)
hostname = strdup(orte_system_info.nodename);
else {
/* Couldn't find it, so fail */
ORTE_ERROR_LOG(ORTE_ERR_BAD_PARAM);
exit_status = ORTE_ERR_BAD_PARAM;
goto cleanup;
}
}
/*
* set the 'batchid'
*/
if (NULL != batchid)
batchname = strdup(batchid);
else
batchname = strdup("0");
/*
* Check: Can't give a proc without a job
*/
if( NULL == job &&
NULL != proc) {
ORTE_ERROR_LOG(ORTE_ERR_BAD_PARAM);
exit_status = ORTE_ERR_BAD_PARAM;
goto cleanup;
}
/*
* get the front part of the session directory
* Will look something like:
* openmpi-sessions-USERNAME@HOSTNAME_BATCHID
*/
if (NULL != orte_process_info.top_session_dir) {
frontend = strdup(orte_process_info.top_session_dir);
}
else { /* If not set then construct it */
if (0 > asprintf(&frontend, "openmpi-sessions-%s@%s_%s", user, hostname, batchname)) {
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
exit_status = ORTE_ERR_OUT_OF_RESOURCE;
goto cleanup;
}
}
/*
* Construct the session directory
*/
/* If we were given a 'proc' then we can construct it fully into:
* openmpi-sessions-USERNAME@HOSTNAME_BATCHID/JOBID/PROC
*/
if( NULL != proc) {
sessions = opal_os_path( false, frontend, job, proc, NULL );
if( NULL == sessions ) {
ORTE_ERROR_LOG(ORTE_ERROR);
exit_status = ORTE_ERROR;
goto cleanup;
}
}
/* If we were given a 'job' then we can construct it partially into:
* openmpi-sessions-USERNAME@HOSTNAME_BATCHID/JOBID
*/
else if(NULL != job) {
sessions = opal_os_path( false, frontend, job, NULL );
if( NULL == sessions ) {
ORTE_ERROR_LOG(ORTE_ERROR);
exit_status = ORTE_ERROR;
goto cleanup;
}
}
/* If we were not given either then we just set it to frontend
*/
else {
sessions = strdup(frontend); /* must dup this to avoid double-free later */
}
/*
* If the user specified an invalid prefix, or no prefix at all
* we need to keep looking
*/
if( NULL != fulldirpath && NULL != *fulldirpath) {
free(*fulldirpath);
*fulldirpath = NULL;
}
if( NULL != return_prefix && NULL != *return_prefix) { /* use the user specified one, if available */
prefix = strdup(*return_prefix);
prefix_provided = true;
}
/* Try to find a proper alternative prefix */
else if (NULL != orte_process_info.tmpdir_base) { /* stored value */
prefix = strdup(orte_process_info.tmpdir_base);
}
else if( NULL != getenv("OMPI_PREFIX_ENV") ) { /* OMPI Environment var */
prefix = strdup(getenv("OMPI_PREFIX_ENV"));
}
else if( NULL != getenv("TMPDIR") ) { /* General Environment var */
prefix = strdup(getenv("TMPDIR"));
}
else if( NULL != getenv("TMP") ) { /* Another general environment var */
prefix = strdup(getenv("TMP"));
}
else { /* ow. just use the default tmp directory */
prefix = strdup(OMPI_DEFAULT_TMPDIR);
}
/*
* Construct the absolute final path, if requested
*/
if (NULL != fulldirpath) {
*fulldirpath = opal_os_path(false, prefix, sessions, NULL);
}
/*
* Return the frontend and prefix, if user requested we do so
*/
if (NULL != return_frontend) {
*return_frontend = strdup(frontend);
}
if (!prefix_provided && NULL != return_prefix) {
*return_prefix = strdup(prefix);
}
cleanup:
if(NULL != hostname)
free(hostname);
if(NULL != batchname)
free(batchname);
if(NULL != sessions)
free(sessions);
if(NULL != user)
free(user);
if (NULL != prefix) free(prefix);
if (NULL != frontend) free(frontend);
return exit_status;
}
/*
* Construct the session directory and create it if necessary
*/
int orte_session_dir(bool create,
char *prefix, char *usr, char *hostid,
char *batchid, char *job, char *proc)
{
char *fulldirpath = NULL,
*frontend = NULL,
*sav = NULL;
int return_code = ORTE_SUCCESS, rtn;
/* This indicates if the prefix was set, and so if it fails then we
* should try with the default prefixes.*/
bool dbl_check_prefix = false;
if( NULL != prefix)
dbl_check_prefix = true;
try_again:
/*
* If the first attempt at the path creation failed, try with a null
* prefix. unless the original prefix was null, then we fail.
*/
if(!dbl_check_prefix && /* an indicator that we are trying a second time */
NULL != prefix) {
free(prefix);
prefix = NULL;
}
/*
* Get the session directory full name
* First try it with the specified prefix.
*/
if( ORTE_SUCCESS != ( rtn = orte_session_dir_get_name(&fulldirpath,
&prefix,
&frontend,
usr, hostid,
batchid, job,
proc) ) ) {
return_code = rtn;
/*
* If the first attempt at the path creation failed, try with a null
* prefix. unless the original prefix was null, then we fail :(
*/
if(dbl_check_prefix) {
dbl_check_prefix = false;
goto try_again;
}
else {
ORTE_ERROR_LOG(return_code);
goto cleanup;
}
}
/*
* Now that we have the full path, go ahead and create it if necessary
*/
if( create ) {
if( ORTE_SUCCESS != (rtn = orte_create_dir(fulldirpath) ) ) {
return_code = rtn;
if(dbl_check_prefix) {
dbl_check_prefix = false;
goto try_again;
}
else {
ORTE_ERROR_LOG(return_code);
goto cleanup;
}
}
}
/*
* if we are not creating, then just verify that the path is OK
*/
else {
if( ORTE_SUCCESS != (rtn = opal_os_dirpath_access(fulldirpath, 0) )) {
/* It is not valid so we give up and return an error */
return_code = rtn;
if(dbl_check_prefix) {
dbl_check_prefix = false;
goto try_again;
}
else {
/* it is okay for the path not to be found - don't error
* log that case, but do error log others
*/
if (ORTE_ERR_NOT_FOUND != return_code) {
ORTE_ERROR_LOG(return_code);
}
goto cleanup;
}
}
}
return_code = ORTE_SUCCESS;
/*
* If we are creating the directory tree, the overwrite the
* global structure fields
*/
if (create) {
if (NULL != orte_process_info.tmpdir_base) {
free(orte_process_info.tmpdir_base);
orte_process_info.tmpdir_base = NULL;
}
if (NULL != orte_process_info.top_session_dir) {
free(orte_process_info.top_session_dir);
orte_process_info.top_session_dir = NULL;
}
}
/*
* Update some of the global structures if they are empty
*/
if (NULL == orte_process_info.tmpdir_base)
orte_process_info.tmpdir_base = strdup(prefix);
if (NULL == orte_process_info.top_session_dir)
orte_process_info.top_session_dir = strdup(frontend);
/*
* Set the process session directory
*/
if (NULL != proc) {
if (create) { /* overwrite if creating */
if (NULL != orte_process_info.proc_session_dir) {
free(orte_process_info.proc_session_dir);
orte_process_info.proc_session_dir = NULL;
}
}
if (NULL == orte_process_info.proc_session_dir) {
orte_process_info.proc_session_dir = strdup(fulldirpath);
}
/* Strip off last part of directory structure */
sav = opal_dirname(fulldirpath);
free(fulldirpath);
fulldirpath = sav;
sav = NULL;
}
/*
* Set the job session directory
*/
if (NULL != job) {
if (create) { /* overwrite if creating */
if (NULL != orte_process_info.job_session_dir) {
free(orte_process_info.job_session_dir);
orte_process_info.job_session_dir = NULL;
}
}
if (NULL == orte_process_info.job_session_dir) {
orte_process_info.job_session_dir = strdup(fulldirpath);
}
/* Strip off last part of directory structure */
sav = opal_dirname(fulldirpath);
free(fulldirpath);
fulldirpath = sav;
sav = NULL;
}
if (orte_debug_flag) {
opal_output(0, "procdir: %s",
OMPI_PRINTF_FIX_STRING(orte_process_info.proc_session_dir));
opal_output(0, "jobdir: %s",
OMPI_PRINTF_FIX_STRING(orte_process_info.job_session_dir));
opal_output(0, "top: %s",
OMPI_PRINTF_FIX_STRING(orte_process_info.top_session_dir));
opal_output(0, "tmp: %s",
OMPI_PRINTF_FIX_STRING(orte_process_info.tmpdir_base));
}
cleanup:
if(NULL != fulldirpath)
free(fulldirpath);
if(NULL != frontend)
free(frontend);
if(NULL != sav)
free(sav);
return return_code;
}
/*
* A job has aborted - so force cleanup of the session directory
*/
int
orte_session_dir_cleanup(orte_jobid_t jobid)
{
int rc;
char *tmp;
char *job=NULL, *job_session_dir=NULL;
/* need to setup the top_session_dir with the prefix */
tmp = opal_os_path(false,
orte_process_info.tmpdir_base,
orte_process_info.top_session_dir, NULL);
if (ORTE_JOBID_WILDCARD != jobid) {
/* define the proc and job session directories for this process */
if (ORTE_SUCCESS != (rc = orte_util_convert_jobid_to_string(&job, jobid))) {
ORTE_ERROR_LOG(rc);
free(tmp);
return rc;
}
job_session_dir = opal_os_path( false, orte_process_info.top_session_dir,
job, NULL );
if( NULL == job_session_dir ) {
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
free(tmp);
free(job);
return ORTE_ERR_OUT_OF_RESOURCE;
}
opal_os_dirpath_destroy(job_session_dir,
true, orte_dir_check_file);
} else {
/* if we want the session_dir removed for ALL jobids, then
* just recursively blow the whole session away, saving only
* output files
*/
opal_os_dirpath_destroy(tmp, true, orte_dir_check_file_output);
}
opal_os_dirpath_destroy(tmp,
false, orte_dir_check_file);
if (opal_os_dirpath_is_empty(job_session_dir)) {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: found job session dir empty - deleting");
}
rmdir(job_session_dir);
} else {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: job session dir not empty - leaving");
}
goto CLEANUP;
}
if (opal_os_dirpath_is_empty(tmp)) {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: found top session dir empty - deleting");
}
rmdir(tmp);
} else {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: top session dir not empty - leaving");
}
}
CLEANUP:
free(tmp);
if (NULL != job) free(job);
if (NULL != job_session_dir) free(job_session_dir);
return ORTE_SUCCESS;
}
int
orte_session_dir_finalize(orte_process_name_t *proc)
{
int rc;
char *tmp;
char *job, *job_session_dir, *vpid, *proc_session_dir;
/* need to setup the top_session_dir with the prefix */
tmp = opal_os_path(false,
orte_process_info.tmpdir_base,
orte_process_info.top_session_dir, NULL);
/* define the proc and job session directories for this process */
if (ORTE_SUCCESS != (rc = orte_util_convert_jobid_to_string(&job, proc->jobid))) {
ORTE_ERROR_LOG(rc);
free(tmp);
return rc;
}
if (ORTE_SUCCESS != (rc = orte_util_convert_vpid_to_string(&vpid, proc->vpid))) {
ORTE_ERROR_LOG(rc);
free(tmp);
free(job);
return rc;
}
job_session_dir = opal_os_path( false, orte_process_info.top_session_dir,
job, NULL );
if( NULL == job_session_dir ) {
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
free(tmp);
free(job);
free(vpid);
return ORTE_ERR_OUT_OF_RESOURCE;
}
proc_session_dir = opal_os_path( false, job_session_dir, vpid, NULL );
if( NULL == proc_session_dir ) {
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
free(tmp);
free(job);
free(vpid);
free(job_session_dir);
return ORTE_ERR_OUT_OF_RESOURCE;
}
opal_os_dirpath_destroy(proc_session_dir,
false, orte_dir_check_file);
opal_os_dirpath_destroy(job_session_dir,
false, orte_dir_check_file);
opal_os_dirpath_destroy(orte_process_info.top_session_dir,
false, orte_dir_check_file);
opal_os_dirpath_destroy(tmp,
false, orte_dir_check_file);
if (opal_os_dirpath_is_empty(proc_session_dir)) {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: found proc session dir empty - deleting");
}
rmdir(proc_session_dir);
} else {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: proc session dir not empty - leaving");
}
goto CLEANUP;
}
if (opal_os_dirpath_is_empty(job_session_dir)) {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: found job session dir empty - deleting");
}
rmdir(job_session_dir);
} else {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: job session dir not empty - leaving");
}
goto CLEANUP;
}
if (opal_os_dirpath_is_empty(orte_process_info.top_session_dir)) {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: found top session dir empty - deleting");
}
rmdir(orte_process_info.top_session_dir);
} else {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: top session dir not empty - leaving");
}
goto CLEANUP;
}
if (opal_os_dirpath_is_empty(tmp)) {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: found top session dir empty - deleting");
}
rmdir(tmp);
} else {
if (orte_debug_flag) {
opal_output(0, "sess_dir_finalize: top session dir not empty - leaving");
}
}
CLEANUP:
free(tmp);
free(job);
free(vpid);
free(job_session_dir);
free(proc_session_dir);
return ORTE_SUCCESS;
}
static bool
orte_dir_check_file(const char *root, const char *path)
{
/*
* Keep:
* - files starting with "output-"
* - files that indicate abort
*/
if( (0 == strncmp(path, "output-", strlen("output-"))) ||
(0 == strcmp(path, "abort"))) {
return false;
}
return true;
}
static bool
orte_dir_check_file_output(const char *root, const char *path)
{
/*
* Keep:
* - files starting with "output-"
*/
if( 0 == strncmp(path, "output-", strlen("output-"))) {
return false;
}
return true;
}
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