nfs4_cb_Compound.c

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/*
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 * Copyright CEA/DAM/DIF  (2008)
 * contributeur : Philippe DENIEL   philippe.deniel@cea.fr
 *                Thomas LEIBOVICI  thomas.leibovici@cea.fr
 *
 * Portions Copyright (C) 2012, The Linux Box Corporation
 * Contributor : Matt Benjamin <matt@linuxbox.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * ---------------------------------------
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef _SOLARIS
#include "solaris_port.h"
#endif

#include <stdio.h>
#include <string.h>
#include <pthread.h>
#include <fcntl.h>
#include <sys/file.h>           /* for having FNDELAY */
#include "HashData.h"
#include "HashTable.h"
#include "log.h"
#include "ganesha_rpc.h"
#include "nfs23.h"
#include "nfs4.h"
#include "mount.h"
#include "nfs_core.h"
#include "cache_inode.h"
#include "nfs_exports.h"
#include "nfs_creds.h"
#include "nfs_proto_functions.h"
#include "nfs_rpc_callback.h"

static const nfs4_cb_tag_t cbtagtab4[] = {
    {NFS4_CB_TAG_DEFAULT, "Ganesha CB Compound", 19},
};

/* Some CITI-inspired compound helper ideas */

void
cb_compound_init_v4(nfs4_compound_t *cbt, uint32_t n_ops, uint32_t ident,
                    char *tag, uint32_t tag_len)
{
    /* args */
    memset(cbt, 0, sizeof(nfs4_compound_t)); /* XDRS */

    cbt->v_u.v4.args.minorversion = 0;
    cbt->v_u.v4.args.callback_ident = ident;
    cbt->v_u.v4.args.argarray.argarray_val = alloc_cb_argop(n_ops);
    cbt->v_u.v4.args.argarray.argarray_len = 0; /* not n_ops, see below */

    if (tag) {
        /* sender must ensure tag is safe to queue */
        cbt->v_u.v4.args.tag.utf8string_val = tag;
        cbt->v_u.v4.args.tag.utf8string_len = tag_len;
    } else {
        cbt->v_u.v4.args.tag.utf8string_val =
            cbtagtab4[NFS4_CB_TAG_DEFAULT].val;
        cbt->v_u.v4.args.tag.utf8string_len =
            cbtagtab4[NFS4_CB_TAG_DEFAULT].len;
    }

    cbt->v_u.v4.res.resarray.resarray_val = alloc_cb_resop(n_ops);
    cbt->v_u.v4.res.resarray.resarray_len = 0;

} /* cb_compound_init */

void
cb_compound_add_op(nfs4_compound_t *cbt, nfs_cb_argop4 *src)
{
    uint32_t ix = /* old value */
        (cbt->v_u.v4.args.argarray.argarray_len)++;
    nfs_cb_argop4 *dst =
        cbt->v_u.v4.args.argarray.argarray_val + ix;
    *dst = *src;
    /* nothing to do for (zero) val region */
    cbt->v_u.v4.res.resarray.resarray_len++;
}

void
cb_compound_free(nfs4_compound_t *cbt)
{
    switch (cbt->v_u.v4.args.minorversion) {
    case 0:
        free_cb_argop(cbt->v_u.v4.args.argarray.argarray_val);
        free_cb_resop(cbt->v_u.v4.res.resarray.resarray_val);
        break;
    default:
        break;
    }
}