m0t1fs_fsync_test_helper.c

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/*
 * Copyright (c) 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.
 *
 */

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

int main(int argc, char **argv)
{
        int rv = 0;
        int fd = 0;
        char *str = "Hello World\n";
        char object_path[PATH_MAX];

        /* Check we were told the mount point. */
        if (argc != 2) {
                fprintf(stderr, "Usage: %s /path/to/mount/point\n", argv[0]);
                exit(1);
        }

        /* Build a path for our to-create object. */
        rv = snprintf(object_path, sizeof(object_path), "%s/0:91837432", argv[1]);
        if (rv >= sizeof(object_path)) {
                fprintf(stderr, "Path overflow\n");
                exit(1);
        }

        fd = creat(object_path, 0600);
        if (fd >= 0) {
                /* Write some data. */
                rv = write(fd, str, strlen(str));

                /* Try and fsync the file. */
                rv = fsync(fd);

                /* fsync should return 0 for sucess. */
                fprintf(stderr, "fsync returned: %d\n", rv);
        } else {
                fprintf(stderr, "Failed to creat %s: %s\n",
                                object_path, strerror(errno));
                exit(1);
        }

        return rv;
}