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