fi_command.c

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/* -*- C -*- */
/*
 * Copyright (c) 2017-2020 Seagate Technology LLC and/or its Affiliates
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */


#undef M0_TRACE_SUBSYSTEM
#define M0_TRACE_SUBSYSTEM M0_TRACE_SUBSYS_OTHER

#include "lib/trace.h"
#include "fis/fi_command.h"
#include "fis/fi_command_fops.h"  /* m0_fi_command_req_fopt */
#include "fop/fop.h"              /* m0_fop */
#include "rpc/rpc.h"              /* m0_rpc_session */
#include "rpc/rpclib.h"           /* m0_rpc_post_sync */


static bool fi_str_not_empty(const char *s)
{
        return s != NULL && *s != '\0';
}

M0_INTERNAL int m0_fi_command_post_sync(struct m0_rpc_session *sess,
                                        const char            *func,
                                        const char            *tag,
                                        enum m0_fi_disp        disp,
                                        uint32_t               num1,
                                        uint32_t               num2)
{
        struct m0_fop            *fop;
        struct m0_fi_command_rep *rep;
        struct m0_fi_command_req  req = {
                .fcr_func = M0_BUF_INITS((char *)func),
                .fcr_tag  = M0_BUF_INITS((char *)tag),
                .fcr_disp = disp,
                .fcr_num1 = num1,
                .fcr_num2 = num2,
        };
        int rc;

        M0_ENTRY("func=%s, tag=%s, disp=%d", func, tag, disp);
        M0_PRE(m0_rpc_session_validate(sess) == 0);
        M0_PRE(_0C(fi_str_not_empty(func)) &&
               _0C(fi_str_not_empty(tag)));

        fop = m0_fop_alloc(&m0_fi_command_req_fopt, &req,
                           session_machine(sess));
        if (fop == NULL)
                return M0_ERR(-ENOMEM);
        rc = m0_rpc_post_sync(fop, sess, NULL, 0);
        if (rc == 0) {
                rep = m0_fop_data(m0_rpc_item_to_fop(fop->f_item.ri_reply));
                rc = rep->fcp_rc;
        }
        fop->f_data.fd_data = NULL; /* protect local data from freeing */
        m0_fop_put_lock(fop);
        return M0_RC(rc);
}

#undef M0_TRACE_SUBSYSTEM

/*
 *  Local variables:
 *  c-indentation-style: "K&R"
 *  c-basic-offset: 8
 *  tab-width: 8
 *  fill-column: 80
 *  scroll-step: 1
 *  End:
 */