mirror of https://gitee.com/openkylin/linux.git
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
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/*
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* Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include "usnic.h"
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#include "usnic_log.h"
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#include "usnic_debugfs.h"
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static struct dentry *debugfs_root;
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static ssize_t usnic_debugfs_buildinfo_read(struct file *f, char __user *data,
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size_t count, loff_t *ppos)
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{
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char buf[500];
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int res;
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if (*ppos > 0)
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return 0;
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res = scnprintf(buf, sizeof(buf),
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"version: %s\n"
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"build date: %s\n",
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DRV_VERSION, DRV_RELDATE);
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return simple_read_from_buffer(data, count, ppos, buf, res);
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}
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static const struct file_operations usnic_debugfs_buildinfo_ops = {
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.owner = THIS_MODULE,
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.open = simple_open,
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.read = usnic_debugfs_buildinfo_read
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};
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void usnic_debugfs_init(void)
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{
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debugfs_root = debugfs_create_dir(DRV_NAME, NULL);
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if (IS_ERR(debugfs_root)) {
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usnic_err("Failed to create debugfs root dir, check if debugfs is enabled in kernel configuration\n");
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debugfs_root = NULL;
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return;
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}
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debugfs_create_file("build-info", S_IRUGO, debugfs_root,
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NULL, &usnic_debugfs_buildinfo_ops);
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}
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void usnic_debugfs_exit(void)
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{
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if (!debugfs_root)
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return;
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debugfs_remove_recursive(debugfs_root);
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debugfs_root = NULL;
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}
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