dec_attropl.c

openPBS的开放源代码

/*
*         OpenPBS (Portable Batch System) v2.3 Software License
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* Copyright (c) 1999-2000 Veridian Information Solutions, Inc.
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static char ident[] = "@(#) $RCSfile: dec_attropl.c,v $ $Revision: 2.1.10.4 $";

/*
 * decode_DIS_attropl() - decode into a list of PBS API "attropl" structures
 *
 *	The space for the attropl structures is allocated as needed.
 *
 *	The first item is a unsigned integer, a count of the
 *	number of attropl entries in the linked list.  This is encoded
 *	even when there are no entries in the list.
 *
 *	Each individual entry is encoded as:
 *		u int	size of the three strings (name, resource, value)
 *			including the terminating nulls, see dec_svrattrl.c
 *		string	attribute name
 *		u int	1 or 0 if resource name does or does not follow
 *		string	resource name (if one)
 *		string  value of attribute/resource
 *		u int	"op" of attrlop (also flag of svrattrl) 
 *
 *	Note, the encoding of a attropl is the same as the encoding of
 *	the pbs_ifl.h structures "attrl" and the server struct svrattrl.
 *	Any one of the three forms can be decoded into any of the three with
 *	the possible loss of the "flags" field (which is the "op" of the
 *	attrlop).
 */

#include <pbs_config.h>   /* the master config generated by configure */

#include <stdlib.h>
#include "libpbs.h"
#include "dis.h"

int decode_DIS_attropl(sock, ppatt)
	int		 sock;
	struct attropl **ppatt;
{
	int		 hasresc;
	int		 i;
	unsigned int	 name_len;
	unsigned int	 numpat;
	struct attropl  *pat;
	struct attropl  *patprior;
	int		 rc;


	numpat = disrui(sock, &rc);
	if (rc) return rc;

	for (i=0; i < numpat; ++i) {

		name_len = disrui(sock, &rc);	/* name_len is unused here */
		if (rc) break;

		pat = malloc(sizeof (struct attropl));
		if (pat == 0)
			return DIS_NOMALLOC;

		pat->next     = (struct attropl *)0;
		pat->name     = (char *)0;
		pat->resource = (char *)0;
		pat->value    = (char *)0;

		pat->name = disrst(sock, &rc);
		if (rc)	break;

		hasresc = disrui(sock, &rc);
		if (rc) break;
		if (hasresc) {
			pat->resource = disrst(sock, &rc);
			if (rc) break;
		}

		pat->value = disrst(sock, &rc);
		if (rc) break;

		pat->op = (enum batch_op)disrui(sock, &rc);
		if (rc) break;

		if (i == 0) {
			/* first one, link to passing in pointer */
			*ppatt = pat;
		} else {
			patprior->next = pat;
		}
		patprior = pat;
	}

	if (rc)
		PBS_free_aopl(pat);
	return rc;
}