getconfig.c

openPBS的开放源代码

/*
*         OpenPBS (Portable Batch System) v2.3 Software License
* 
* Copyright (c) 1999-2000 Veridian Information Solutions, Inc.
* All rights reserved.
* 
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* 
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* Software to other sites and locations.  Use and redistribution of
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/* $Id: getconfig.c,v 1.1.6.2 2000/08/09 00:18:41 hender Exp $ */

/*
 * This module contains the necessary functions for
 * processing the config file and setting the 
 * appropriate variables.  These functions are:
 *
 * get_config:   main loop for processing the config file
 * open_config:  open the configuration file for read
 * close_config: close the configuration file
 * set_cf_gopt:  validate the configuration file and
 *               set appropriate variables
 */

#include <sys/types.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include "pbs_ifl.h"
#include "net_connect.h"
#include "log.h"

/* Scheduler header files */
#include "toolkit.h"
#include "gblxvars.h"

#define	MAX_LINE_SIZE	512	/* maximum line size */

extern int errno;

static int post_config (void);
static int validate_config (void);
static int set_cfg_opt (char *, char *);
static int arg_to_qlist (char *, char *, QueueList **);
static int get_variance (char *, int *, int *);
static void print_config (void);
static int qlist_disjoint (QueueList *qlist1, QueueList *qlist2);
static int qlist_unique (QueueList *qlist);
static int qlist_one_per_host (QueueList *qlist);

/* Main loop for processing the configuration file */
int 
schd_get_config(char *filename)
{
    char   *id = "schd_get_config";

    char    line[MAX_LINE_SIZE];
    char    cfg_option[MAX_LINE_SIZE];
    char    cfg_arg[MAX_LINE_SIZE];
    FILE   *cfgfd = NULL;

    char   *comment;
    int     linenum = 0, error = 0;
    size_t  linelen;

    cfgfd = fopen(filename, "r");

    if (cfgfd == NULL) {
	(void)sprintf(log_buffer, 
	    "Opening '%s': %s", filename, strerror(errno));

	log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id, log_buffer);
	DBPRT(("%s: %s\n", id, log_buffer));

	return (-1);
    }

    /* Walk through the configuration file line by line. */
    while (fgets(line, sizeof (line), cfgfd)) {
	linenum++;

	linelen = strlen(line);

	if (linelen == (sizeof (line) - 1)) {
	    (void)sprintf(log_buffer, 
	       "Error in config file %s, line %d: Line too long",
		filename, linenum);
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id, log_buffer);
	    DBPRT(( "%s\n", log_buffer));

	    error = -1;
	    break;
	} else {
	    linelen--;			/* Move back to newline. */
	    line[linelen] = '\0';	/* And remove it. */
	}

	/* If there is a comment on this line, remove it from view. */
	if ((comment = strchr(line, '#')) != NULL) 
	    *comment = '\0';

	if (strlen(line) < 2)
	    continue;		/* skip blank lines */

	/* Split the option and the argument. */
	if (sscanf(line, "%s %s", cfg_option, cfg_arg) != 2) {
	    /* Unable to read a cfg_option and cfg_arg */
	    (void)sprintf(log_buffer, "Error in config file %s, line %d",
		filename, linenum);
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id, log_buffer);
	    DBPRT(( "%s\n", log_buffer));

	    error = -1;
	    break;
        }

	/* Set the configurable options */
	if (set_cfg_opt(cfg_option, cfg_arg)) {
	    /* Unable to parse the option. */
	    (void)sprintf(log_buffer, 
		"Error parsing option '%s' in config file %s, line %d",
		cfg_option, filename, linenum);
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id, log_buffer);
	    DBPRT(( "%s\n", log_buffer));

	    error = -1;
	    break;
	}
    }

    /* Close the config file */

    fclose(cfgfd);

    if (error)
	return (error);

    /* Do any post-configuration necessary. */
    if (!post_config())
	return (-1);

    if (!validate_config())
	return (-1);

    print_config();
    return (0);
}


/* 
 * Now that an option and its argument have been read, validate them and
 * set the appropriate global configuration variables.
 */
static int 
set_cfg_opt(char *cfg_option, char *cfg_arg)
{
    char   *id = "set_cfg_opt";

    /* XXX Should smash case on these before doing string compares? */

    if (!strcmp(cfg_option, "TARGET_LOAD_PCT")) {
	schd_TARGET_LOAD_PCT = atoi(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "TARGET_LOAD_VARIANCE")) {
	return (get_variance(cfg_arg, 
	    &schd_TARGET_LOAD_MINUS, &schd_TARGET_LOAD_PLUS));
    }
    
    if (!strcmp(cfg_option, "HIGH_SYSTIME")) {
	schd_HIGH_SYSTIME = atoi(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "MAX_JOBS")) {
	schd_MAX_JOBS = atoi(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "MIN_JOBS")) {
	schd_MIN_JOBS = atoi(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "MAX_DEDICATED_JOBS")) {
	schd_MAX_DEDICATED_JOBS = atoi(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "MAX_USER_RUN_JOBS")) {
	schd_MAX_USER_RUN_JOBS = atoi(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "ENFORCE_ALLOCATION")) {
	return schd_val2booltime(cfg_arg, &schd_ENFORCE_ALLOCATION);
    }
    
    if (!strcmp(cfg_option, "TEST_ONLY")) {
	return schd_val2bool(cfg_arg, &schd_TEST_ONLY);
    }
    
    if (!strcmp(cfg_option, "ENFORCE_DEDICATED_TIME")) {
	return schd_val2booltime(cfg_arg, &schd_ENFORCE_DEDTIME);
    }
    
    if (!strcmp(cfg_option, "DEDICATED_TIME_COMMAND")) {
	if (schd_DEDTIME_COMMAND)
	    free(schd_DEDTIME_COMMAND);
	schd_DEDTIME_COMMAND = schd_strdup(cfg_arg);
	if (schd_DEDTIME_COMMAND == NULL) {
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id,
		"schd_strdup(schd_DEDTIME_COMMAND)");
	    return (-1);
	}
	return (0);
    }

    if (!strcmp(cfg_option, "DEDICATED_TIME_CACHE_SECS")) {
	schd_DEDTIME_CACHE_SECS = atoi(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "DECAY_FACTOR")) {
	schd_DECAY_FACTOR = atof(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "OA_DECAY_FACTOR")) {
	schd_OA_DECAY_FACTOR = atof(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "SCHED_ACCT_DIR")) {
	if (schd_SCHED_ACCT_DIR)
	    free(schd_SCHED_ACCT_DIR);
	schd_SCHED_ACCT_DIR = schd_strdup(cfg_arg);
	if (schd_SCHED_ACCT_DIR == NULL) {
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id,
		"schd_strdup(schd_SCHED_ACCT_DIR)");
	    return (-1);
	}
	return (0);
    }
    
    if (!strcmp(cfg_option, "SYSTEM_NAME")) {
	if (schd_SYSTEM_NAME)
	    free(schd_SYSTEM_NAME);
	schd_SYSTEM_NAME = schd_strdup(cfg_arg);
	schd_lowercase(schd_SYSTEM_NAME);
	return (0);
    }
    
    if (!strcmp(cfg_option, "SERVER_HOST")) {
	if (schd_SERVER_HOST)
	    free(schd_SERVER_HOST);
	schd_SERVER_HOST = schd_strdup(cfg_arg);
	if (schd_SERVER_HOST == NULL) {
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id,
		"schd_strdup(schd_SERVER_HOST)");
	    return (-1);
	}
	schd_lowercase(schd_SERVER_HOST);
	return (0);
    }
    
    if (!strcmp(cfg_option, "SCHED_HOST")) {
	if (schd_SCHED_HOST)
	    free(schd_SCHED_HOST);
	schd_SCHED_HOST = schd_strdup(cfg_arg);
	if (schd_SCHED_HOST == NULL) {
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id,
		"schd_strdup(schd_SCHED_HOST)");
	    return (-1);
	}
	schd_lowercase(schd_SCHED_HOST);
	return (0);
    }
    
    if (!strcmp(cfg_option, "SORTED_JOB_DUMPFILE")) {
	if (schd_JOB_DUMPFILE)
	    free(schd_JOB_DUMPFILE);
	schd_JOB_DUMPFILE = schd_strdup(cfg_arg);
	if (schd_JOB_DUMPFILE == NULL) {
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id,
		"schd_strdup(schd_JOB_DUMPFILE)");
	    return (-1);
	}
	return (0);
    }
    
    if (!strcmp(cfg_option, "SCHED_RESTART_ACTION")) {
	if (strcmp(cfg_arg, "NONE") == 0) {
	    schd_SCHED_RESTART_ACTION = SCHD_RESTART_NONE;
	    return (0);
	}

	if (strcmp(cfg_arg, "RESUBMIT") == 0) {
	    schd_SCHED_RESTART_ACTION = SCHD_RESTART_RESUBMIT;
	    return (0);
	}

	if (strcmp(cfg_arg, "RERUN") == 0) {
	    schd_SCHED_RESTART_ACTION = SCHD_RESTART_RERUN;
	    return (0);
	}

	return (-1);		/* Bad argument */
    }
    
    if (!strcmp(cfg_option, "SORT_BY_PAST_USAGE")) {
	return schd_val2bool(cfg_arg, &schd_SORT_BY_PAST_USAGE);
    }
    
    if (!strcmp(cfg_option, "ENFORCE_PRIME_TIME")) {
	return schd_val2booltime(cfg_arg, &schd_ENFORCE_PRIME_TIME);
    }
    
    if (!strcmp(cfg_option, "PRIME_TIME_START")) {
	schd_PRIME_TIME_START = schd_val2sec(cfg_arg);
	return (0);
    }
    
    if (!strcmp(cfg_option, "PRIME_TIME_END")) {
	schd_PRIME_TIME_END = schd_val2sec(cfg_arg);
	return (0);
    }

    if (!strcmp(cfg_option, "PRIME_TIME_SMALL_NODE_LIMIT")) {
	schd_PT_SMALL_NODE_LIMIT = atoi(cfg_arg);
	return (0);
    }

    if (!strcmp(cfg_option, "PRIME_TIME_SMALL_WALLT_LIMIT")) {