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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include "proc.h"
#include "procfs.h"
#include <rthw.h>
#include <rtdbg.h>
#include <fcntl.h>
#include <errno.h>
#include <dfs_dentry.h>
#include <dfs_fs.h>
static void *seq_start(struct dfs_seq_file *seq, off_t *index)
{
off_t i = *index; // seq->index
struct dfs_filesystem_type *fs = dfs_filesystems();
if (fs)
{
while (i--)
{
fs = fs->next;
if (!fs)
{
break;
}
}
}
return fs;
}
static void seq_stop(struct dfs_seq_file *seq, void *data)
{
}
static void *seq_next(struct dfs_seq_file *seq, void *data, off_t *index)
{
/* data: The return value of the start or next*/
off_t i = *index + 1; // seq->index
struct dfs_filesystem_type *fs = (struct dfs_filesystem_type *)data;
*index = i;
return fs->next;
}
static int seq_show(struct dfs_seq_file *seq, void *data)
{
/* data: The return value of the start or next*/
struct dfs_filesystem_type *fs = (struct dfs_filesystem_type *)data;
dfs_seq_printf(seq, "%-9s%s\n", (fs->fs_ops->flags == FS_NEED_DEVICE) ? "" : "nodev", fs->fs_ops->name);
return 0;
}
static const struct dfs_seq_ops seq_ops = {
.start = seq_start,
.stop = seq_stop,
.next = seq_next,
.show = seq_show,
};
int proc_filesystems_init(void)
{
struct proc_dentry *dentry = proc_create_data("filesystems", 0, NULL, NULL, NULL);
if (dentry)
{
dentry->seq_ops = &seq_ops;
}
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_filesystems_init);
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