m0ctl_main.c

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/* -*- C -*- */
/*
 * Copyright (c) 2011-2020 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 <linux/module.h>      /* MODULE_XXX */
#include <linux/init.h>        /* module_init */
#include <linux/debugfs.h>     /* debugfs_create_dir */
#include <linux/kernel.h>      /* pr_err */

#include "lib/thread.h"                           /* M0_THREAD_ENTER */
#include "utils/linux_kernel/m0ctl_internal.h"
#include "utils/linux_kernel/finject_debugfs.h"   /* fi_dfs_init */
#include "utils/linux_kernel/trace_debugfs.h"     /* trc_dfs_init */
#include "utils/linux_kernel/core_debugfs.h"      /* core_dfs_init */

#if 0
struct dentry  *dfs_root_dir;
const char      dfs_root_name[] = "motr";

int dfs_init(void)
{
        int rc;

        pr_info(KBUILD_MODNAME ": init\n");

        /* create motr's main debugfs directory */
        dfs_root_dir = debugfs_create_dir(dfs_root_name, NULL);
        if (dfs_root_dir == NULL) {
                pr_err(KBUILD_MODNAME ": failed to create debugfs dir '%s'\n",
                       dfs_root_name);
                return -EPERM;
        }

        rc = fi_dfs_init();
        if (rc != 0)
                goto err;

        rc = trc_dfs_init();
        if (rc != 0)
                goto err;

        rc = core_dfs_init();
        if (rc != 0)
                goto err;

        return 0;
err:
        debugfs_remove_recursive(dfs_root_dir);
        dfs_root_dir = 0;
        return rc;
}

void dfs_cleanup(void)
{
        pr_info(KBUILD_MODNAME ": cleanup\n");

        core_dfs_cleanup();
        trc_dfs_cleanup();
        fi_dfs_cleanup();

        /*
         * remove all orphaned debugfs files (if any) and motr's debugfs root
         * directroy itself
         */
        if (dfs_root_dir != 0) {
                debugfs_remove_recursive(dfs_root_dir);
                dfs_root_dir = 0;
        }
}

int __init m0ctl_init(void)
{
        M0_THREAD_ENTER;
        return dfs_init();
}

void __exit m0ctl_exit(void)
{
        M0_THREAD_ENTER;
        dfs_cleanup();
}

#endif

int __init m0ctl_init(void)
{
        return 0;
}

void __exit m0ctl_exit(void)
{
}

module_init(m0ctl_init);
module_exit(m0ctl_exit);

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