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add procfs

This commit is contained in:
zhao maosheng 2024-07-17 17:46:54 +08:00
parent 1d78d11567
commit 3e91a6836a
22 changed files with 3325 additions and 0 deletions
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3
components/dfs/Kconfig
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@ -176,6 +176,9 @@ if RT_USING_SMART
bool "Using Pseudo-Teletype Filesystem (UNIX98 PTY)"
depends on RT_USING_DFS_DEVFS
default y
config RT_USING_DFS_PROCFS
bool "Enable proc file system"
default n
endif
config RT_USING_DFS_CROMFS

166
components/dfs/dfs_v2/filesystems/procfs/README.md Normal file
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@ -0,0 +1,166 @@
# 进程文件系统 (procfs)
## 数据结构
```c
struct proc_dentry
{
rt_uint32_t mode;
rt_atomic_t ref_count;
struct proc_dentry *parent;
struct dfs_vfs_node node;
const struct dfs_file_ops *fops;
const struct proc_ops *ops;
char *name;
void *data;
};
```
```log
root { mode: S_IFDIR, ref_count: 1, parent: root, name: /, child->next: file1->node }
|
|—— file1 { mode: S_IFREG, ref_count: 1, parent: root, name: file1, node->next: link1->node }
|—— link1 { mode: S_IFLNK, ref_count: 1, parent: root, name: link1, data: fullpath, node->next: dir1->node }
|—— dir1 { mode: S_IFDIR, ref_count: 1, parent: root, name: dir1, node->next: file3->node, child->next: file2->node }
| |
| |—— dir2 { mode: S_IFDIR, ref_count: 1, parent: dir1, name: dir2, node->next: link2->node }
| |—— link2 { mode: S_IFLNK, ref_count: 1, parent: dir1, name: link2, data: fullpath, node->next: file2->node }
| |—— file2 { mode: S_IFREG, ref_count: 1, parent: dir1, name: file2 }
|
|—— file3 { mode: S_IFREG, ref_count: 1, parent: root, name: file3 }
```
## API 介绍
```c
struct proc_dentry *dfs_proc_find(const char *name);
struct proc_dentry *proc_mkdir_data(const char *name, mode_t mode, struct proc_dentry *parent,
const struct dfs_file_ops *fops, void *data);
struct proc_dentry *proc_mkdir_mode(const char *name, mode_t mode, struct proc_dentry *parent);
struct proc_dentry *proc_mkdir(const char *name, struct proc_dentry *parent);
struct proc_dentry *proc_create_data(const char *name, mode_t mode, struct proc_dentry *parent,
const struct dfs_file_ops *fops, void *data);
struct proc_dentry *proc_symlink(const char *name, struct proc_dentry *parent, const char *dest);
struct proc_dentry *proc_acquire(struct proc_dentry *dentry);
void proc_release(struct proc_dentry *dentry);
void proc_remove(struct proc_dentry *dentry);
```
- dfs_proc_find
查找指定节点，并返回节点数据指针
| 入参 | 说明 |
| ---- | ---------------------------------------------------- |
| name | 从 procfs 的 root 起始的完整路径，比如 “/dir1/file2” |
- proc_mkdir_data
创建一个目录，并返回节点数据指针
| 入参 | 说明 |
| ------ | ------------------------------------------------------------ |
| name | 从 procfs 的 root 起始的完整路径，比如 “/dir1/file2”<br />从 parent 起始的完整路径 |
| mode | 权限配置 |
| parent | 指定创建目录的起始节点 |
| fops | 文件操作接口配置 |
| data | 私有数据 |
- proc_mkdir_mode
创建一个目录，并返回节点数据指针
| 入参 | 说明 |
| ------ | ------------------------------------------------------------ |
| name | 从 procfs 的 root 起始的完整路径，比如 “/dir1/file2”<br />从 parent 起始的完整路径 |
| mode | 权限配置 |
| parent | 指定创建目录的起始节点 |
- proc_mkdir
创建一个目录，并返回节点数据指针
| 入参 | 说明 |
| ---- | ------------------------------------------------------------ |
| name | 从 procfs 的 root 起始的完整路径，比如 “/dir1/file2”<br />从 parent 起始的完整路径 |
| mode | 权限配置 |
- proc_create_data
创建一个文件，并返回节点数据指针
| 入参 | 说明 |
| ------ | ------------------------------------------------------------ |
| name | 从 procfs 的 root 起始的完整路径，比如 “/dir1/file2”<br />从 parent 起始的完整路径 |
| mode | 权限配置 |
| parent | 指定创建文件的起始节点 |
| fops | 文件操作接口配置 |
| data | 私有数据 |
- proc_symlink
创建一个符号链接，并返回节点数据指针
| 入参 | 说明 |
| ------ | ------------------------------------------------------------ |
| name | 从 procfs 的 root 起始的完整路径，比如 “/dir1/file2”<br />从 parent 起始的完整路径 |
| parent | 指定创建文件的起始节点 |
| dest | 链接的目标文件完整路径 |
- proc_acquire
引用一个节点，并返回节点数据指针
| 入参 | 说明 |
| ------ | -------------- |
| dentry | 需要引用的节点 |
- proc_release
释放一个节点
| 入参 | 说明 |
| ------ | -------------- |
| dentry | 需要释放的节点 |
- proc_remove
删除一个节点包含子节点
| 入参 | 说明 |
| ------ | -------------- |
| dentry | 需要删除的节点 |
## msh 调试命令
- proc_dump
遍历打印指定节点含子节点的信息（名称、引用计数），比如 `proc_dump /dir1` 或者 `proc_dump`
- proc_remove
删除指定节点含子节点，比如 `proc_remove /dir1` 或者 `proc_remove /file3`
- proc_symlink
创建一个符号链接，`proc_symlink /link3 /mnt`
- proc_echo
创建一个空文件，`proc_echo /file4`
- proc_mkdir
创建一个空目录，`proc_mkdir /dir3`
- proc_pid
创建一个 pid 目录，`proc_pid /101`

11
components/dfs/dfs_v2/filesystems/procfs/SConscript Normal file
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@ -0,0 +1,11 @@
# RT-Thread building script for component
from building import *
cwd = GetCurrentDir()
src = Glob('*.c')
CPPPATH = [cwd]
group = DefineGroup('Filesystem', src, depend = ['RT_USING_DFS', 'RT_USING_DFS_PROCFS'], CPPPATH = CPPPATH)
Return('group')

733
components/dfs/dfs_v2/filesystems/procfs/proc.c Normal file
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@ -0,0 +1,733 @@
/*
* 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>
/*
* This is the root in the proc tree..
*/
static struct proc_dentry _proc_root = {
.mode = S_IFDIR | (S_IRUSR | S_IRGRP | S_IROTH) | (S_IXUSR | S_IXGRP | S_IXOTH),
.ref_count = 1,
.parent = &_proc_root,
.node.sibling = RT_LIST_OBJECT_INIT(_proc_root.node.sibling),
.node.subnode = RT_LIST_OBJECT_INIT(_proc_root.node.subnode),
.fops = RT_NULL,
.name = "/",
.data = RT_NULL,
};
static int _proc_find(struct proc_dentry **parent, const char *name)
{
struct proc_dentry *dentry = RT_NULL, *tmp;
dfs_vfs_for_each_subnode(dentry, tmp, (*parent), node)
{
if (dentry == RT_NULL)
{
break;
}
if (rt_strcmp(dentry->name, name) == 0)
{
*parent = dentry;
return 0;
}
}
return -1;
}
static int proc_find(struct proc_dentry **parent, const char **name, rt_bool_t force_lookup)
{
int ret = 0;
char *tmp = RT_NULL;
if (!(*parent))
{
*parent = &_proc_root;
}
tmp = rt_strdup(*name);
if (tmp)
{
char *begin = tmp, *end = RT_NULL;
if (*begin == '/')
{
begin++;
if (*begin == '\0')
{
rt_free(tmp);
*parent = proc_acquire(*parent);
return ret;
}
}
while (1)
{
end = rt_strstr(begin, "/");
if (end)
{
*end = '\0';
ret = _proc_find(parent, begin);
if (ret < 0 || !S_ISDIR((*parent)->mode))
{
*parent = RT_NULL;
ret = -1;
break;
}
begin = end + 1;
}
else if (force_lookup)
{
ret = _proc_find(parent, begin);
if (ret < 0)
{
if ((*parent)->ops && (*parent)->ops->lookup)
{
*parent = (*parent)->ops->lookup(*parent, begin);
if (*parent == RT_NULL)
{
ret = -1;
}
}
else
{
*parent = RT_NULL;
}
}
else
{
*parent = proc_acquire(*parent);
}
break;
}
else
{
*parent = proc_acquire(*parent);
break;
}
}
*name = *name + (begin - tmp);
rt_free(tmp);
}
return ret;
}
static void *single_start(struct dfs_seq_file *seq, off_t *index)
{
return NULL + (*index == 0);
}
static void *single_next(struct dfs_seq_file *seq, void *data, off_t *index)
{
++*index;
return NULL;
}
static void single_stop(struct dfs_seq_file *seq, void *data)
{
}
static int proc_open(struct dfs_file *file)
{
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
if (entry->single_show)
{
struct dfs_seq_ops *seq_ops = (struct dfs_seq_ops *)rt_calloc(1, sizeof(struct dfs_seq_ops));
if (seq_ops)
{
int ret = 0;
seq_ops->start = single_start;
seq_ops->next = single_next;
seq_ops->stop = single_stop;
seq_ops->show = entry->single_show;
ret = dfs_seq_open(file, seq_ops);
if (ret != 0)
{
rt_free(seq_ops);
}
return ret;
}
}
return dfs_seq_open(file, entry->seq_ops);
}
static int proc_close(struct dfs_file *file)
{
struct dfs_seq_file *seq = file->data;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
if (seq && entry->single_show && seq->ops)
{
rt_free((void *)seq->ops);
seq->ops = RT_NULL;
}
return dfs_seq_release(file);
}
static const struct dfs_file_ops proc_file_ops = {
.open = proc_open,
.read = dfs_seq_read,
.lseek = dfs_seq_lseek,
.close = proc_close,
};
static struct proc_dentry *proc_create(struct proc_dentry **parent, const char *name, mode_t mode)
{
int ret = 0;
struct proc_dentry *dentry = RT_NULL;
ret = proc_find(parent, &name, 0);
if (ret >= 0)
{
dentry = *parent;
ret = proc_find(&dentry, &name, 1);
if (ret < 0)
{
dentry = rt_calloc(1, sizeof(struct proc_dentry));
if (dentry)
{
dentry->mode = mode;
dentry->ref_count = 1;
dentry->name = rt_strdup(name);
dfs_vfs_init_node(&dentry->node);
}
}
else
{
proc_release(dentry);
dentry = RT_NULL;
}
}
return dentry;
}
/**
* @brief The dentry reference count is incremented by one
*
* @param dentry
*
* @return dentry
*/
struct proc_dentry *proc_acquire(struct proc_dentry *dentry)
{
if (dentry)
{
dentry->ref_count += 1;
}
return dentry;
}
/**
* @brief The dentry reference count is minus one, or release
*
* @param dentry
*
* @return none
*/
void proc_release(struct proc_dentry *dentry)
{
if (dentry)
{
if (dentry->ref_count == 1)
{
if (dentry->name)
{
rt_free(dentry->name);
}
if (S_ISLNK(dentry->mode) && dentry->data)
{
rt_free(dentry->data);
}
rt_free(dentry);
}
else
{
dentry->ref_count -= 1;
}
}
}
static struct proc_dentry *proc_register(struct proc_dentry *parent, struct proc_dentry *child)
{
child->parent = parent;
dfs_vfs_append_node(&parent->node, &child->node);
child->ref_count += 1;
child->pid = parent->pid;
return child;
}
/**
* @brief Make a dir
*
* @param name fullpath based on _proc_root or parent
* @param mode permission configuration
* @param parent can be empty
* @param fops
* @param data
*
* @return dentry
*/
struct proc_dentry *proc_mkdir_data(const char *name, mode_t mode, struct proc_dentry *parent,
const struct dfs_file_ops *fops, void *data)
{
struct proc_dentry *dentry, *_parent = parent;
if (mode == 0)
mode = (S_IRUSR | S_IRGRP | S_IROTH) | (S_IXUSR | S_IXGRP | S_IXOTH);
dentry = proc_create(&_parent, name, S_IFDIR | mode);
if (dentry)
{
dentry->fops = fops;
dentry->data = data;
dentry = proc_register(_parent, dentry);
}
proc_release(_parent);
return dentry;
}
/**
* @brief Make a dir
*
* @param name fullpath based on _proc_root or parent
* @param mode permission configuration
* @param parent can be empty
*
* @return dentry
*/
struct proc_dentry *proc_mkdir_mode(const char *name, mode_t mode, struct proc_dentry *parent)
{
return proc_mkdir_data(name, mode, parent, NULL, NULL);
}
/**
* @brief Make a dir
*
* @param name fullpath based on _proc_root or parent
* @param parent can be empty
*
* @return dentry
*/
struct proc_dentry *proc_mkdir(const char *name, struct proc_dentry *parent)
{
return proc_mkdir_data(name, 0, parent, NULL, NULL);
}
static struct proc_dentry *proc_create_reg(const char *name, mode_t mode, struct proc_dentry **parent)
{
struct proc_dentry *dentry = RT_NULL;
if ((mode & S_IFMT) == 0)
mode |= S_IFREG;
if ((mode & (S_ISUID | S_ISGID | S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO)) == 0)
mode |= S_IRUSR | S_IRGRP | S_IROTH;
if (!S_ISREG(mode))
{
*parent = RT_NULL;
return dentry;
}
return proc_create(parent, name, mode);
}
/**
* @brief Make a file
*
* @param name fullpath based on _proc_root or parent
* @param mode permission configuration
* @param parent can be empty
* @param fops
* @param data
*
* @return dentry
*/
struct proc_dentry *proc_create_data(const char *name, mode_t mode, struct proc_dentry *parent,
const struct dfs_file_ops *fops, void *data)
{
struct proc_dentry *dentry, *_parent = parent;
dentry = proc_create_reg(name, mode, &_parent);
if (dentry)
{
dentry->fops = fops ? fops : &proc_file_ops;
dentry->data = data;
dentry = proc_register(_parent, dentry);
}
proc_release(_parent);
return dentry;
}
/**
* @brief Make a file
*
* @param name fullpath based on _proc_root or parent
* @param mode permission configuration
* @param parent can be empty
* @param show
* @param data
*
* @return dentry
*/
struct proc_dentry *proc_create_single_data(const char *name, mode_t mode, struct proc_dentry *parent,
int (*show)(struct dfs_seq_file *, void *), void *data)
{
struct proc_dentry *dentry, *_parent = parent;
dentry = proc_create_reg(name, mode, &_parent);
if (dentry)
{
dentry->fops = &proc_file_ops;
dentry->single_show = show;
dentry->data = data;
dentry = proc_register(_parent, dentry);
}
proc_release(_parent);
return dentry;
}
/**
* @brief Make a symlink
*
* @param name fullpath based on _proc_root or parent
* @param parent can be empty
* @param dest link file fullpath
*
* @return dentry
*/
struct proc_dentry *proc_symlink(const char *name, struct proc_dentry *parent, const char *dest)
{
struct proc_dentry *dentry, *_parent = parent;
dentry = proc_create(&_parent, name, (S_IFLNK | (S_IRUSR | S_IRGRP | S_IROTH)
| (S_IWUSR | S_IWGRP | S_IWOTH) | (S_IXUSR | S_IXGRP | S_IXOTH)));
if (dentry)
{
dentry->data = (void *)rt_strdup(dest);
if (dentry->data)
{
dentry = proc_register(_parent, dentry);
}
else
{
proc_release(dentry);
dentry = NULL;
}
}
proc_release(_parent);
return dentry;
}
static void remove_proc_subtree(struct proc_dentry *dentry)
{
struct proc_dentry *iter = RT_NULL, *iter_tmp, *tmp = RT_NULL;
dfs_vfs_for_each_subnode(iter, iter_tmp, dentry, node)
{
if (iter == RT_NULL)
{
break;
}
if (tmp)
{
proc_release(tmp);
tmp = RT_NULL;
}
tmp = iter;
if (S_ISDIR(dentry->mode))
{
remove_proc_subtree(iter);
}
}
if (tmp)
{
proc_release(tmp);
tmp = RT_NULL;
}
}
/**
* @brief remove a dentry
*
* @param dentry
*
* @return none
*/
void proc_remove(struct proc_dentry *dentry)
{
if (dentry && dentry != &_proc_root)
{
if (S_ISDIR(dentry->mode))
{
remove_proc_subtree(dentry);
}
dfs_vfs_remove_node(&dentry->node);
proc_release(dentry);
}
}
/**
* @brief find dentry exist
*
* @param name fullpath based on _proc_root
*
* @return dentry
*/
struct proc_dentry *dfs_proc_find(const char *name)
{
struct proc_dentry *dentry = RT_NULL;
proc_find(&dentry, &name, 1);
return dentry;
}
/**
* @brief remove a dentry on parent
*
* @param name fullpath based on parent
* @param parent
*
* @return none
*/
void proc_remove_dentry(const char *name, struct proc_dentry *parent)
{
struct proc_dentry *dentry = parent;
if (proc_find(&dentry, &name, 1) >= 0)
{
proc_remove(dentry);
proc_release(dentry);
}
}
#define _COLOR_RED "\033[31m"
#define _COLOR_GREEN "\033[32m"
#define _COLOR_BLUE "\033[34m"
#define _COLOR_CYAN "\033[36m"
#define _COLOR_WHITE "\033[37m"
#define _COLOR_NORMAL "\033[0m"
static void dump_proc_subtree(struct proc_dentry *dentry, int tab)
{
struct proc_dentry *iter = RT_NULL, *tmp;
dfs_vfs_for_each_subnode(iter, tmp, dentry, node)
{
if (iter == RT_NULL)
{
break;
}
for(int i = 0; i < tab; i ++)
{
rt_kprintf("%-4s", i + 1 >= tab ? "|-" : " ");
}
if (S_ISDIR(iter->mode))
{
rt_kprintf(_COLOR_BLUE "%-20s" _COLOR_NORMAL " %d\n", iter->name, iter->ref_count);
dump_proc_subtree(iter, tab + 1);
}
else if (S_ISLNK(iter->mode))
{
rt_kprintf(_COLOR_CYAN "%-20s" _COLOR_NORMAL " %d\n", iter->name, iter->ref_count);
}
else
{
rt_kprintf("%-20s %d\n", iter->name, iter->ref_count);
}
}
}
static void proc_dump(struct proc_dentry *dentry)
{
if (dentry)
{
if (S_ISDIR(dentry->mode))
{
rt_kprintf(_COLOR_BLUE "%-20s" _COLOR_NORMAL " %d\n", dentry->name, dentry->ref_count);
dump_proc_subtree(dentry, 1);
}
else if (S_ISLNK(dentry->mode))
{
rt_kprintf(_COLOR_CYAN "%-20s" _COLOR_NORMAL " %d\n", dentry->name, dentry->ref_count);
}
else
{
rt_kprintf("%-20s %d\n", dentry->name, dentry->ref_count);
}
}
}
static int msh_proc_dump(int argc, char** argv)
{
const char *name = argc > 1 ? argv[1] : "/";
struct proc_dentry *dentry = RT_NULL;
int ret = proc_find(&dentry, &name, 1);
if (ret >= 0)
{
proc_dump(dentry);
}
proc_release(dentry);
return 0;
}
MSH_CMD_EXPORT_ALIAS(msh_proc_dump, proc_dump, proc dump);
static int msh_proc_remove(int argc, char** argv)
{
if (argc > 1)
{
const char *name = argv[1];
struct proc_dentry *dentry = RT_NULL;
int ret = proc_find(&dentry, &name, 1);
if (ret >= 0)
{
if (dentry != &_proc_root)
{
proc_remove(dentry);
}
else
{
struct proc_dentry *iter = RT_NULL, *iter_tmp, *tmp = RT_NULL;
dfs_vfs_for_each_subnode(iter, iter_tmp, dentry, node)
{
if (iter == RT_NULL)
{
break;
}
if (tmp)
{
proc_remove(tmp);
}
tmp = iter;
}
if (tmp)
{
proc_remove(tmp);
}
}
}
proc_release(dentry);
}
else
{
rt_kprintf("proc_remove path\n");
}
return 0;
}
MSH_CMD_EXPORT_ALIAS(msh_proc_remove, proc_remove, proc remove);
static int msh_proc_symlink(int argc, char** argv)
{
if (argc > 2)
{
struct proc_dentry *entry = proc_symlink(argv[1], 0, argv[2]);
if (entry)
{
proc_release(entry);
}
}
else
{
rt_kprintf("proc_symlink path dest\n");
}
return 0;
}
MSH_CMD_EXPORT_ALIAS(msh_proc_symlink, proc_symlink, proc symlink);
static int msh_proc_echo(int argc, char** argv)
{
if (argc > 1)
{
for(int i = 1; i <= argc - 1; i ++)
{
struct proc_dentry *entry = proc_create_data(argv[i], 0, 0, 0, 0);
if (entry)
{
proc_release(entry);
}
}
}
else
{
rt_kprintf("proc_echo path\n");
}
return 0;
}
MSH_CMD_EXPORT_ALIAS(msh_proc_echo, proc_echo, proc echo);
static int msh_proc_mkdir(int argc, char** argv)
{
if (argc > 1)
{
for(int i = 1; i <= argc - 1; i ++)
{
struct proc_dentry *entry = proc_mkdir(argv[i], 0);
if (entry)
{
proc_release(entry);
}
}
}
else
{
rt_kprintf("proc_mkdir path\n");
}
return 0;
}
MSH_CMD_EXPORT_ALIAS(msh_proc_mkdir, proc_mkdir, proc mkdir);

75
components/dfs/dfs_v2/filesystems/procfs/proc.h Normal file
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@ -0,0 +1,75 @@
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#ifndef __PROC_H__
#define __PROC_H__
#include <dfs_file.h>
#include <dfs_seq_file.h>
#include <dfs_vfs.h>
#ifdef __cplusplus
extern "C"
{
#endif
struct proc_dentry;
struct proc_ops
{
struct proc_dentry *(*lookup)(struct proc_dentry *parent, const char *name);
int (*readlink)(struct proc_dentry *dentry, char *buf, int len);
};
struct proc_dentry
{
rt_uint32_t mode;
rt_atomic_t ref_count;
struct proc_dentry *parent;
struct dfs_vfs_node node;
const struct dfs_file_ops *fops;
const struct proc_ops *ops;
const struct dfs_seq_ops *seq_ops;
int (*single_show)(struct dfs_seq_file *seq, void *data);
int pid;
char *name;
void *data;
};
struct proc_dentry *dfs_proc_find(const char *name);
struct proc_dentry *proc_mkdir_data(const char *name, mode_t mode, struct proc_dentry *parent,
const struct dfs_file_ops *fops, void *data);
struct proc_dentry *proc_mkdir_mode(const char *name, mode_t mode, struct proc_dentry *parent);
struct proc_dentry *proc_mkdir(const char *name, struct proc_dentry *parent);
struct proc_dentry *proc_create_data(const char *name, mode_t mode, struct proc_dentry *parent,
const struct dfs_file_ops *fops, void *data);
struct proc_dentry *proc_create_single_data(const char *name, mode_t mode, struct proc_dentry *parent,
int (*show)(struct dfs_seq_file *, void *), void *data);
struct proc_dentry *proc_symlink(const char *name, struct proc_dentry *parent, const char *dest);
struct proc_dentry *proc_acquire(struct proc_dentry *dentry);
void proc_release(struct proc_dentry *dentry);
void proc_remove(struct proc_dentry *dentry);
void proc_remove_dentry(const char *name, struct proc_dentry *parent);
int proc_pid(int pid);
#ifdef __cplusplus
}
#endif
#endif

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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>
static char *__proc_cmdline = NULL;
int proc_cmdline_save(const char *cmdline)
{
if (__proc_cmdline)
{
free(__proc_cmdline);
__proc_cmdline = NULL;
}
__proc_cmdline = strdup(cmdline);
return 0;
}
static int single_show(struct dfs_seq_file *seq, void *data)
{
if (__proc_cmdline)
{
dfs_seq_puts(seq, __proc_cmdline);
}
return 0;
}
int proc_cmdline_init(void)
{
struct proc_dentry *dentry = proc_create_single_data("cmdline", 0, NULL, single_show, NULL);
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_cmdline_init);

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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>
static void *seq_start(struct dfs_seq_file *seq, off_t *index)
{
off_t i = *index; // seq->index
return NULL + (i == 0);
}
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
*index = i;
return NULL;
}
static int seq_show(struct dfs_seq_file *seq, void *data)
{
/* data: The return value of the start or next*/
dfs_seq_puts(seq, "rt_weak const struct dfs_seq_ops *cpuinfo_get_seq_ops(void)\n--need your own function--\n");
return 0;
}
static const struct dfs_seq_ops seq_ops = {
.start = seq_start,
.stop = seq_stop,
.next = seq_next,
.show = seq_show,
};
rt_weak const struct dfs_seq_ops *cpuinfo_get_seq_ops(void)
{
return &seq_ops;
}
static int proc_open(struct dfs_file *file)
{
return dfs_seq_open(file, cpuinfo_get_seq_ops());
}
static int proc_close(struct dfs_file *file)
{
return dfs_seq_release(file);
}
static const struct dfs_file_ops file_ops = {
.open = proc_open,
.read = dfs_seq_read,
.lseek = dfs_seq_lseek,
.close = proc_close,
};
int proc_cpuinfo_init(void)
{
struct proc_dentry *dentry = proc_create_data("cpuinfo", 0, NULL, &file_ops, NULL);
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_cpuinfo_init);

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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 <rthw.h>
#include <rtthread.h>
#include <string.h>
#define LIST_FIND_OBJ_NR 8
struct device_show
{
char *buf;
int size;
int len;
int index;
};
typedef struct
{
rt_list_t *list;
rt_list_t **array;
rt_uint8_t type;
int nr; /* input: max nr, can't be 0 */
int nr_out; /* out: got nr */
} list_get_next_t;
static void list_find_init(list_get_next_t *p, rt_uint8_t type, rt_list_t **array, int nr)
{
struct rt_object_information *info;
rt_list_t *list;
info = rt_object_get_information((enum rt_object_class_type)type);
list = &info->object_list;
p->list = list;
p->type = type;
p->array = array;
p->nr = nr;
p->nr_out = 0;
}
static rt_list_t *list_get_next(rt_list_t *current, list_get_next_t *arg)
{
int first_flag = 0;
rt_base_t level;
rt_list_t *node, *list;
rt_list_t **array;
struct rt_object_information *info;
int nr;
arg->nr_out = 0;
if (!arg->nr || !arg->type)
{
return (rt_list_t *)RT_NULL;
}
list = arg->list;
info = rt_list_entry(list, struct rt_object_information, object_list);
if (!current) /* find first */
{
node = list;
first_flag = 1;
}
else
{
node = current;
}
level = rt_spin_lock_irqsave(&info->spinlock);
if (!first_flag)
{
struct rt_object *obj;
/* The node in the list? */
obj = rt_list_entry(node, struct rt_object, list);
if ((obj->type & ~RT_Object_Class_Static) != arg->type)
{
rt_spin_unlock_irqrestore(&info->spinlock, level);
return (rt_list_t *)RT_NULL;
}
}
nr = 0;
array = arg->array;
while (1)
{
node = node->next;
if (node == list)
{
node = (rt_list_t *)RT_NULL;
break;
}
nr++;
*array++ = node;
if (nr == arg->nr)
{
break;
}
}
rt_spin_unlock_irqrestore(&info->spinlock, level);
arg->nr_out = nr;
return node;
}
static char *const device_type_str[RT_Device_Class_Unknown] =
{
"Character Device",
"Block Device",
"Network Interface",
"MTD Device",
"CAN Device",
"RTC",
"Sound Device",
"Graphic Device",
"I2C Bus",
"USB Slave Device",
"USB Host Bus",
"USB OTG Bus",
"SPI Bus",
"SPI Device",
"SDIO Bus",
"PM Pseudo Device",
"Pipe",
"Portal Device",
"Timer Device",
"Miscellaneous Device",
"Sensor Device",
"Touch Device",
"Phy Device",
"Security Device",
"WLAN Device",
"Pin Device",
"ADC Device",
"DAC Device",
"WDT Device",
"PWM Device",
"Bus Device",
};
static void save_info(struct device_show *dev, char *dev_name)
{
char tmp[256] = {0};
int len;
dev->index ++;
rt_snprintf(tmp, 256, "%d %s\n", dev->index, dev_name);
tmp[255] = 0;
len = rt_strlen(tmp);
if (dev->size > dev->len + len)
{
strcat(dev->buf, tmp);
dev->len += len;
}
else
{
if (dev->buf == RT_NULL)
{
dev->buf = rt_calloc(1, 4096);
}
else
{
dev->buf = rt_realloc(dev->buf, dev->size + 4096);
}
if (dev->buf)
{
dev->size += 4096;
strcat(dev->buf, tmp);
dev->len += len;
}
}
}
static void list_device(struct device_show *dev)
{
rt_base_t level;
list_get_next_t find_arg;
struct rt_object_information *info;
rt_list_t *obj_list[LIST_FIND_OBJ_NR];
rt_list_t *next = (rt_list_t *)RT_NULL;
list_find_init(&find_arg, RT_Object_Class_Device, obj_list, sizeof(obj_list) / sizeof(obj_list[0]));
info = rt_list_entry(find_arg.list, struct rt_object_information, object_list);
do
{
next = list_get_next(next, &find_arg);
{
int i;
for (i = 0; i < find_arg.nr_out; i++)
{
struct rt_object *obj;
struct rt_device *device;
obj = rt_list_entry(obj_list[i], struct rt_object, list);
level = rt_spin_lock_irqsave(&info->spinlock);
if ((obj->type & ~RT_Object_Class_Static) != find_arg.type)
{
rt_spin_unlock_irqrestore(&info->spinlock, level);
continue;
}
rt_spin_unlock_irqrestore(&info->spinlock, level);
device = (struct rt_device *)obj;
if (device->type < RT_Device_Class_Unknown)
{
save_info(dev + device->type, device->parent.name);
}
}
}
}
while (next != (rt_list_t *)RT_NULL);
}
static int show_info(struct dfs_seq_file *seq)
{
struct device_show _show[RT_Device_Class_Unknown] = {0};
list_device(_show);
for (int i = 0; i < RT_Device_Class_Unknown; i++)
{
if (_show[i].buf)
{
dfs_seq_printf(seq, "%s:\n", device_type_str[i]);
dfs_seq_write(seq, _show[i].buf, _show[i].len);
dfs_seq_putc(seq, '\n');
rt_free(_show[i].buf);
}
}
return 0;
}
static void *seq_start(struct dfs_seq_file *seq, off_t *index)
{
off_t i = *index; // seq->index
return NULL + (i == 0);
}
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
*index = i;
return NULL;
}
static int seq_show(struct dfs_seq_file *seq, void *data)
{
/* data: The return value of the start or next*/
show_info(seq);
return 0;
}
static const struct dfs_seq_ops seq_ops = {
.start = seq_start,
.stop = seq_stop,
.next = seq_next,
.show = seq_show,
};
int proc_devices_init(void)
{
struct proc_dentry *dentry = proc_create_data("devices", 0, NULL, NULL, NULL);
if (dentry)
{
dentry->seq_ops = &seq_ops;
}
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_devices_init);

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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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/*
* 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 <mm_page.h>
extern void rt_memory_info(rt_size_t *total,
rt_size_t *used,
rt_size_t *max_used);
static int single_show(struct dfs_seq_file *seq, void *data)
{
dfs_seq_printf(seq, "0.13 0.16 0.17 1/1035 380436\n");
return 0;
}
int proc_loadavg_init(void)
{
struct proc_dentry *dentry = proc_create_single_data("loadavg", 0, NULL, single_show, NULL);
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_loadavg_init);

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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 <mm_page.h>
extern void rt_memory_info(rt_size_t *total,
rt_size_t *used,
rt_size_t *max_used);
static int single_show(struct dfs_seq_file *seq, void *data)
{
rt_size_t total, used, max_used, freed;
rt_size_t total_sum = 0;
rt_size_t total_freed = 0;
rt_memory_info(&total, &used, &max_used);
total_sum = total_sum + total;
total_freed = total_freed + total - used;
dfs_seq_printf(seq, "%-16s%8d KB\n", "MemMaxUsed:", max_used / 1024);
dfs_seq_printf(seq, "%-16s%8d KB\n", "MemAvailable:", (total - used) / 1024);
dfs_seq_printf(seq, "%-16s%8d KB\n", "Cached:", 0);
dfs_seq_printf(seq, "%-16s%8d KB\n", "SReclaimable:", 0);
rt_page_get_info(&total, &freed);
total_sum = total_sum + total * RT_MM_PAGE_SIZE;
total_freed = total_freed + freed * RT_MM_PAGE_SIZE;
dfs_seq_printf(seq, "%-16s%8d KB\n", "MemTotal:", total_sum / 1024);
dfs_seq_printf(seq, "%-16s%8d KB\n", "MemFree:", total_freed / 1024);
dfs_seq_printf(seq, "%-16s%8d KB\n", "LowPageTotal:", total * RT_MM_PAGE_SIZE / 1024);
dfs_seq_printf(seq, "%-16s%8d KB\n", "lowPageFree:", freed * RT_MM_PAGE_SIZE/ 1024);
rt_page_high_get_info(&total, &freed);
dfs_seq_printf(seq, "%-16s%8d KB\n", "HighPageTotal:", total * RT_MM_PAGE_SIZE / 1024);
dfs_seq_printf(seq, "%-16s%8d KB\n", "HighPageFree:", freed * RT_MM_PAGE_SIZE / 1024);
return 0;
}
int proc_meminfo_init(void)
{
struct proc_dentry *dentry = proc_create_single_data("meminfo", 0, NULL, single_show, NULL);
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_meminfo_init);

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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_mnt.h>
const char *mnt_flag(int flag)
{
/*if (flag & MNT_READONLY)
{
return "ro";
}*/
return "rw";
}
static struct dfs_mnt* mnt_show(struct dfs_mnt *mnt, void *parameter)
{
struct dfs_seq_file *seq = (struct dfs_seq_file *)parameter;
if (mnt)
{
if (mnt->dev_id)
{
dfs_seq_printf(seq, "%s %s %s %s 0 0\n", mnt->dev_id->parent.name, mnt->fullpath,
mnt->fs_ops->name, mnt_flag(mnt->flags));
}
else
{
dfs_seq_printf(seq, "%s %s %s %s 0 0\n", mnt->fs_ops->name, mnt->fullpath,
mnt->fs_ops->name, mnt_flag(mnt->flags));
}
}
return RT_NULL;
}
static void *seq_start(struct dfs_seq_file *seq, off_t *index)
{
off_t i = *index; // seq->index
return NULL + (i == 0);
}
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
*index = i;
return NULL;
}
static int seq_show(struct dfs_seq_file *seq, void *data)
{
/* data: The return value of the start or next*/
dfs_mnt_foreach(mnt_show, seq);
return 0;
}
static const struct dfs_seq_ops seq_ops = {
.start = seq_start,
.stop = seq_stop,
.next = seq_next,
.show = seq_show,
};
int proc_mounts_init(void)
{
struct proc_dentry *dentry = proc_create_data("mounts", 0, NULL, NULL, NULL);
if (dentry)
{
dentry->seq_ops = &seq_ops;
}
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_mounts_init);

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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>
#ifdef RT_USING_LWIP
#include "lwip/opt.h"
#endif
#if LWIP_ROUTE
extern int inet_route_foreach(void (*func)(const char *name, uint32_t ip_addr, uint32_t netmask, void *parameter), void *parameter);
#endif
static void *seq_start(struct dfs_seq_file *seq, off_t *index)
{
off_t i = *index; // seq->index
return NULL + (i == 0);
}
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
*index = i;
return NULL;
}
static void route_show(const char *name, uint32_t ip_addr, uint32_t netmask, void *parameter)
{
struct dfs_seq_file *seq = (struct dfs_seq_file *)parameter;
/* "Iface\tDestination\tGateway "
"\tFlags\tRefCnt\tUse\tMetric\tMask\t\tMTU"
"\tWindow\tIRTT"); */
/* "%63s%lx%lx%X%d%d%d%lx%d%d%d\n" */
dfs_seq_printf(seq, "%s ", name);
dfs_seq_printf(seq, "%lx ", ip_addr);
dfs_seq_printf(seq, "%lx ", 0);
dfs_seq_printf(seq, "%X ", 1);
dfs_seq_printf(seq, "%d ", 0);
dfs_seq_printf(seq, "%d ", 0);
dfs_seq_printf(seq, "%d ", 0);
dfs_seq_printf(seq, "%lx ", netmask);
dfs_seq_printf(seq, "%d ", 0);
dfs_seq_printf(seq, "%d ", 0);
dfs_seq_printf(seq, "%d\n", 0);
}
static int seq_show(struct dfs_seq_file *seq, void *data)
{
/* data: The return value of the start or next*/
dfs_seq_printf(seq, "\n");
#if LWIP_ROUTE
inet_route_foreach(route_show, seq);
#endif
return 0;
}
static const struct dfs_seq_ops seq_ops = {
.start = seq_start,
.stop = seq_stop,
.next = seq_next,
.show = seq_show,
};
int proc_net_init(void)
{
struct proc_dentry *dentry;
dentry = proc_mkdir("net", NULL);
if (!dentry)
return -1;
proc_release(dentry);
dentry = proc_create_data("net/route", 0, NULL, NULL, NULL);
if (dentry)
{
dentry->seq_ops = &seq_ops;
}
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_net_init);

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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 <rthw.h>
#include <rtthread.h>
#include <string.h>
#define LIST_FIND_OBJ_NR 8
typedef struct
{
rt_list_t *list;
rt_list_t **array;
rt_uint8_t type;
int nr; /* input: max nr, can't be 0 */
int nr_out; /* out: got nr */
} list_get_next_t;
static void list_find_init(list_get_next_t *p, rt_uint8_t type, rt_list_t **array, int nr)
{
struct rt_object_information *info;
rt_list_t *list;
info = rt_object_get_information((enum rt_object_class_type)type);
list = &info->object_list;
p->list = list;
p->type = type;
p->array = array;
p->nr = nr;
p->nr_out = 0;
}
static rt_list_t *list_get_next(rt_list_t *current, list_get_next_t *arg)
{
int first_flag = 0;
rt_base_t level;
rt_list_t *node, *list;
rt_list_t **array;
struct rt_object_information *info;
int nr;
arg->nr_out = 0;
if (!arg->nr || !arg->type)
{
return (rt_list_t *)RT_NULL;
}
list = arg->list;
info = rt_list_entry(list, struct rt_object_information, object_list);
if (!current) /* find first */
{
node = list;
first_flag = 1;
}
else
{
node = current;
}
level = rt_spin_lock_irqsave(&info->spinlock);
if (!first_flag)
{
struct rt_object *obj;
/* The node in the list? */
obj = rt_list_entry(node, struct rt_object, list);
if ((obj->type & ~RT_Object_Class_Static) != arg->type)
{
rt_spin_unlock_irqrestore(&info->spinlock, level);
return (rt_list_t *)RT_NULL;
}
}
nr = 0;
array = arg->array;
while (1)
{
node = node->next;
if (node == list)
{
node = (rt_list_t *)RT_NULL;
break;
}
nr++;
*array++ = node;
if (nr == arg->nr)
{
break;
}
}
rt_spin_unlock_irqrestore(&info->spinlock, level);
arg->nr_out = nr;
return node;
}
static int show_info(struct dfs_seq_file *seq)
{
rt_base_t level;
list_get_next_t find_arg;
struct rt_object_information *info;
rt_list_t *obj_list[LIST_FIND_OBJ_NR];
rt_list_t *next = (rt_list_t *)RT_NULL;
list_find_init(&find_arg, RT_Object_Class_Device, obj_list, sizeof(obj_list) / sizeof(obj_list[0]));
info = rt_list_entry(find_arg.list, struct rt_object_information, object_list);
do
{
next = list_get_next(next, &find_arg);
{
int i;
for (i = 0; i < find_arg.nr_out; i++)
{
struct rt_object *obj;
struct rt_device *device;
obj = rt_list_entry(obj_list[i], struct rt_object, list);
level = rt_spin_lock_irqsave(&info->spinlock);
if ((obj->type & ~RT_Object_Class_Static) != find_arg.type)
{
rt_spin_unlock_irqrestore(&info->spinlock, level);
continue;
}
rt_spin_unlock_irqrestore(&info->spinlock, level);
device = (struct rt_device *)obj;
if (device->type == RT_Device_Class_Block)
{
struct rt_device_blk_geometry geometry = { 0 };
rt_device_control(device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry);
dfs_seq_printf(seq, "%4d %7d %14llu %s\n", 0, 0,
geometry.sector_count, device->parent.name);
}
}
}
} while (next != (rt_list_t *)RT_NULL);
return 0;
}
static void *seq_start(struct dfs_seq_file *seq, off_t *index)
{
off_t i = *index; // seq->index
return NULL + (i == 0);
}
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
*index = i;
return NULL;
}
static int seq_show(struct dfs_seq_file *seq, void *data)
{
dfs_seq_puts(seq, "major minor #blocks name\n\n");
/* data: The return value of the start or next*/
show_info(seq);
return 0;
}
static const struct dfs_seq_ops seq_ops = {
.start = seq_start,
.stop = seq_stop,
.next = seq_next,
.show = seq_show,
};
int proc_partitions_init(void)
{
struct proc_dentry *dentry = proc_create_data("partitions", 0, NULL, NULL, NULL);
if (dentry)
{
dentry->seq_ops = &seq_ops;
}
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_partitions_init);

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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#define __RT_IPC_SOURCE__
#include "proc.h"
#include "procfs.h"
#include <rthw.h>
#include <rtdbg.h>
#include <fcntl.h>
#include <errno.h>
#include "lwp_internal.h"
#include <dfs_dentry.h>
#include "lwp_internal.h"
#if defined(RT_USING_SMART)
#include "lwp.h"
#include "lwp_pid.h"
#include <lwp_user_mm.h>
struct pid_dentry
{
const char *name;
mode_t mode;
const struct dfs_file_ops *fops;
const struct proc_ops *ops;
const struct dfs_seq_ops *seq_ops;
int (*single_show)(struct dfs_seq_file *seq, void *data);
void *data;
};
static char stat_transform(int __stat)
{
switch (__stat)
{
case RT_THREAD_RUNNING:
return 'R';
default:
return 'T';
}
}
static int stat_single_show(struct dfs_seq_file *seq, void *data)
{
struct proc_dentry *dentry = (struct proc_dentry *)seq->file->vnode->data;
rt_list_t *list;
int mask = 0;
rt_thread_t thread;
rt_uint64_t user_time_lwp = 0;
rt_uint64_t system_time_lwp = 0;
int lwp_oncpu = RT_CPUS_NR;
int lwp_oncpu_ok = 0;
struct rt_lwp *lwp = RT_NULL;
char** argv = RT_NULL;
char *filename = RT_NULL;
char *dot = RT_NULL;
lwp_pid_lock_take();
lwp = lwp_from_pid_locked(dentry->pid);
argv = lwp_get_command_line_args(lwp);
if (lwp)
{
dfs_seq_printf(seq,"%d ",dentry->pid);
if (argv)
{
filename = strrchr(argv[0], '/');
dot = strchr(argv[0], '.');
if (filename != NULL)
{
filename++;
}
else
{
filename = argv[0];
}
if (dot != NULL)
{
*dot = '\0';
}
if (filename != NULL)
{
dfs_seq_printf(seq,"(%s) ", filename);
}
else
{
dfs_seq_printf(seq,"(%s) ", argv[0]);
}
lwp_free_command_line_args(argv);
}
else
{
dfs_seq_printf(seq,"(%s) ", "");
}
if (lwp->terminated)
{
dfs_seq_printf(seq,"%c ",'Z');
}
else
{
list = lwp->t_grp.next;
while (list != &lwp->t_grp)
{
thread = rt_list_entry(list, struct rt_thread, sibling);
user_time_lwp = user_time_lwp + thread->user_time;
system_time_lwp = system_time_lwp + thread->system_time;
#if RT_CPUS_NR > 1
#define ONCPU(thread) RT_SCHED_CTX(thread).oncpu
#else
#define ONCPU(thread) 0
#endif
if (lwp_oncpu_ok == 0)
{
lwp_oncpu = ONCPU(thread);
lwp_oncpu_ok = 1;
}
if (stat_transform(RT_SCHED_CTX(thread).stat) == 'R')
{
lwp_oncpu = ONCPU(thread);
mask = 1;
}
list = list->next;
}
if (mask == 1)
{
dfs_seq_printf(seq,"%c ",'R');
}
else
{
dfs_seq_printf(seq,"%c ",'S');
}
}
lwp_pid_lock_release();
if (lwp->parent != NULL)
dfs_seq_printf(seq,"%d ",lwp->parent->pid);
else
dfs_seq_printf(seq,"0 ");
dfs_seq_printf(seq, "1 1 0 -1 4194560 48245 133976064 732 425574 ");
dfs_seq_printf(seq,"%llu ",user_time_lwp);//utime
dfs_seq_printf(seq,"%llu ",system_time_lwp);//stime
dfs_seq_printf(seq, "1204291 518742 20 0 1 0 50 ");
dfs_seq_printf(seq, "%d ",rt_aspace_count_vsz(lwp->aspace));//VSZ
dfs_seq_printf(seq, "1422 18446744073709551615 ");
dfs_seq_printf(seq, "1 1 0 0 0 0 671173123 4096 1260 0 0 0 17 ");
dfs_seq_printf(seq, "%d ", lwp_oncpu);//CPU
dfs_seq_printf(seq, "0 0 0 0 0 0 0 0 0 0 0 0 0");
dfs_seq_printf(seq,"\n");
}
else
{
lwp_pid_lock_release();
}
return 0;
}
static int cmdline_single_show(struct dfs_seq_file *seq, void *data)
{
struct proc_dentry *dentry = (struct proc_dentry *)seq->file->vnode->data;
struct rt_lwp *lwp;
char** argv;
lwp_pid_lock_take();
lwp = lwp_from_pid_locked(dentry->pid);
argv = lwp_get_command_line_args(lwp);
lwp_pid_lock_release();
if (argv)
{
for (int i = 0; argv[i] != NULL; i++)
{
dfs_seq_printf(seq, "%s ", argv[i]);
}
dfs_seq_puts(seq, "\n");
lwp_free_command_line_args(argv);
}
else
{
dfs_seq_puts(seq, "error\n");
}
return 0;
}
struct proc_dentry *proc_pid_fd_lookup(struct proc_dentry *parent, const char *name)
{
struct proc_dentry *dentry = RT_NULL;
char num[DIRENT_NAME_MAX];
struct rt_lwp *lwp;
struct dfs_fdtable *table;
lwp_pid_lock_take();
lwp = lwp_from_pid_locked(parent->pid);
table = lwp ? &lwp->fdt : RT_NULL;
lwp_pid_lock_release();
if (!table)
{
return RT_NULL;
}
dfs_file_lock();
for (int i = 0; i < table->maxfd; i++)
{
struct dfs_file *file = table->fds[i];
if (file)
{
rt_snprintf(num, DIRENT_NAME_MAX, "%d", i);
if (rt_strcmp(num, name) == 0)
{
dentry = rt_calloc(1, sizeof(struct proc_dentry));
if (dentry)
{
dentry->mode = (S_IFLNK | (S_IRUSR | S_IRGRP | S_IROTH) | (S_IWUSR | S_IWGRP | S_IWOTH) | (S_IXUSR | S_IXGRP | S_IXOTH));
dentry->ref_count = 1;
dentry->name = rt_strdup(name);
dentry->data = (void *)dfs_dentry_full_path(file->dentry);
if (dentry->data == RT_NULL)
{
//todo add vnode->data
if (file->vnode->type == FT_SOCKET)
dentry->data = (void *)rt_strdup("socket");
else if (file->vnode->type == FT_USER)
dentry->data = (void *)rt_strdup("user");
else if (file->vnode->type == FT_DEVICE)
dentry->data = (void *)rt_strdup("device");
else
dentry->data = (void *)rt_strdup("unknown");
}
dentry->pid = parent->pid;
break;
}
}
}
}
dfs_file_unlock();
return dentry;
}
int proc_pid_fd_getdents(struct dfs_file *file, struct dirent *dirp, uint32_t count)
{
int ret = 0, index = 0;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
struct rt_lwp *lwp;
struct dfs_fdtable *table;
lwp_pid_lock_take();
lwp = lwp_from_pid_locked(entry->pid);
LWP_LOCK(lwp);
table = lwp ? &lwp->fdt : RT_NULL;
if (!table->fds)
{
LWP_UNLOCK(lwp);
lwp_pid_lock_release();
return 0;
}
count = (count / sizeof(struct dirent));
if (count == 0)
{
LWP_UNLOCK(lwp);
lwp_pid_lock_release();
return -EINVAL;
}
dfs_file_lock();
for (int i = 0; i < table->maxfd; i++)
{
struct dfs_file *df = table->fds[i];
if (df)
{
if (index >= file->fpos)
{
struct dirent *d = dirp + index - file->fpos;
d->d_type = DT_SYMLINK;
d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
rt_snprintf(d->d_name, DIRENT_NAME_MAX, "%d", i);
d->d_namlen = rt_strlen(d->d_name);
ret++;
}
index++;
if (index - file->fpos >= count)
{
break;
}
}
}
dfs_file_unlock();
LWP_UNLOCK(lwp);
lwp_pid_lock_release();
if (ret > 0)
{
file->fpos = index;
ret = ret * sizeof(struct dirent);
}
return ret;
}
static const struct proc_ops proc_pid_fd_ops = {
.lookup = proc_pid_fd_lookup,
};
static const struct dfs_file_ops proc_pid_fd_fops = {
.getdents = proc_pid_fd_getdents,
};
int proc_pid_exe_readlink(struct proc_dentry *dentry, char *buf, int len)
{
struct rt_lwp *lwp;
lwp = lwp_self();
len = rt_snprintf(buf, len, "%s", lwp ? lwp->exe_file : "null");
return len;
}
static const struct proc_ops proc_pid_exe_ops = {
.readlink = proc_pid_exe_readlink,
};
int proc_pid_cwd_readlink(struct proc_dentry *dentry, char *buf, int len)
{
struct rt_lwp *lwp;
lwp = lwp_self();
len = rt_snprintf(buf, len, "%s", lwp ? lwp->working_directory : "null");
return len;
}
static const struct proc_ops proc_pid_cwd_ops = {
.readlink = proc_pid_cwd_readlink,
};
static struct pid_dentry pid_dentry_base[] = {
{"cmdline", S_IFREG | S_IRUSR | S_IRGRP | S_IROTH, 0, 0, 0, cmdline_single_show, 0},
{"cwd", S_IFLNK | S_IRUSR | S_IXUSR, 0, &proc_pid_cwd_ops, 0, 0},
{"exe", S_IFLNK | S_IRUSR | S_IXUSR, 0, &proc_pid_exe_ops, 0, 0},
{"fd", S_IFDIR | S_IRUSR | S_IXUSR, &proc_pid_fd_fops, &proc_pid_fd_ops, 0, 0, 0},
{"mounts", S_IFLNK | S_IRUSR | S_IXUSR, 0, 0, 0, 0, "/proc/mounts"},
{"stat", S_IFREG | S_IRUSR | S_IRGRP | S_IROTH, 0, 0, 0, stat_single_show, 0},
};
int proc_pid(int pid)
{
char pid_str[64] = {0};
struct proc_dentry *dentry;
rt_snprintf(pid_str, 64, "%d", pid);
pid_str[63] = 0;
dentry = proc_mkdir(pid_str, 0);
if (dentry)
{
struct proc_dentry *ent;
dentry->pid = pid;
for (int j = 0; j < sizeof(pid_dentry_base) / sizeof(struct pid_dentry); j++)
{
if (S_ISDIR(pid_dentry_base[j].mode))
{
ent = proc_mkdir_data(pid_dentry_base[j].name, pid_dentry_base[j].mode, dentry,
pid_dentry_base[j].fops, pid_dentry_base[j].data);
}
else if (S_ISLNK(pid_dentry_base[j].mode))
{
if (pid_dentry_base[j].data == RT_NULL)
{
pid_dentry_base[j].data = "NULL";
}
ent = proc_symlink(pid_dentry_base[j].name, dentry, pid_dentry_base[j].data);
}
else
{
ent = proc_create_data(pid_dentry_base[j].name, pid_dentry_base[j].mode, dentry,
pid_dentry_base[j].fops, pid_dentry_base[j].data);
}
if (ent)
{
if (pid_dentry_base[j].ops)
{
ent->ops = pid_dentry_base[j].ops;
}
if (pid_dentry_base[j].seq_ops)
{
ent->seq_ops = pid_dentry_base[j].seq_ops;
}
if (pid_dentry_base[j].single_show)
{
ent->single_show = pid_dentry_base[j].single_show;
}
proc_release(ent);
}
}
proc_release(dentry);
}
return 0;
}
int msh_proc_pid(int argc, char **argv)
{
if (argc > 1)
{
for (int i = 1; i <= argc - 1; i++)
{
proc_pid(atoi(argv[i]));
}
}
return 0;
}
MSH_CMD_EXPORT_ALIAS(msh_proc_pid, proc_pid, proc pid);
#endif

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components/dfs/dfs_v2/filesystems/procfs/proc_self.c Normal file
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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>
#if defined(RT_USING_SMART)
#include <lwp.h>
int proc_self_readlink(struct proc_dentry *dentry, char *buf, int len)
{
struct rt_lwp *lwp = RT_NULL;
lwp = lwp_self();
if (lwp)
{
rt_snprintf(buf, len, "%d", lwp_to_pid(lwp));
buf[len - 1] = 0;
return rt_strlen(buf);
}
else
{
rt_snprintf(buf, len, "null");
buf[len - 1] = 0;
return rt_strlen(buf);
}
return -1;
}
static const struct proc_ops proc_pid_fd_ops = {
.readlink = proc_self_readlink,
};
int proc_self_init(void)
{
struct proc_dentry *ent;
ent = proc_symlink("self", NULL, "NULL");
if (ent)
{
ent->ops = &proc_pid_fd_ops;
}
proc_release(ent);
return 0;
}
INIT_ENV_EXPORT(proc_self_init);
#endif

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components/dfs/dfs_v2/filesystems/procfs/proc_stat.c Normal file
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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>
static void *seq_start(struct dfs_seq_file *seq, off_t *index)
{
off_t i = *index; // seq->index
return NULL + (i == 0);
}
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
*index = i;
return NULL;
}
static int seq_show(struct dfs_seq_file *seq, void *data)
{
int i;
rt_cpu_t pcpu;
rt_uint64_t user_total = 0;
rt_uint64_t system_total = 0;
rt_uint64_t idle_total = 0;
for (i = 0; i < RT_CPUS_NR; i++)
{
pcpu = rt_cpu_index(i);
user_total = user_total + pcpu->cpu_stat.user;
system_total = system_total + pcpu->cpu_stat.system;
idle_total = idle_total + pcpu->cpu_stat.idle;
}
dfs_seq_printf(seq, "cpu %llu 0 %llu %llu 0 0 0 0 0 0\n", user_total, system_total, idle_total);
for (i = 0; i < RT_CPUS_NR; i++)
{
pcpu = rt_cpu_index(i);
dfs_seq_printf(seq, "cpu%d ",i);
dfs_seq_printf(seq, "%llu ",pcpu->cpu_stat.user);//user
dfs_seq_printf(seq, "0 ");//nice
dfs_seq_printf(seq, "%llu ",pcpu->cpu_stat.system);//system
dfs_seq_printf(seq, "%llu ",pcpu->cpu_stat.idle);//idle
dfs_seq_printf(seq, "0 ");//iowait
dfs_seq_printf(seq, "0 ");//irq
dfs_seq_printf(seq, "0 ");//softirq
dfs_seq_printf(seq, "0 0 0\n");//steal,guest,guest_nice
}
return 0;
}
static const struct dfs_seq_ops seq_ops = {
.start = seq_start,
.stop = seq_stop,
.next = seq_next,
.show = seq_show,
};
rt_weak const struct dfs_seq_ops *stat_get_seq_ops(void)
{
return &seq_ops;
}
static int proc_open(struct dfs_file *file)
{
return dfs_seq_open(file, stat_get_seq_ops());
}
static int proc_close(struct dfs_file *file)
{
return dfs_seq_release(file);
}
static const struct dfs_file_ops file_ops = {
.open = proc_open,
.read = dfs_seq_read,
.lseek = dfs_seq_lseek,
.close = proc_close,
};
int proc_stat_init(void)
{
struct proc_dentry *dentry = proc_create_data("stat", 0, NULL, &file_ops, NULL);
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_stat_init);

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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>
static void *seq_start(struct dfs_seq_file *seq, off_t *index)
{
off_t i = *index; // seq->index
return NULL + (i == 0);
}
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
*index = i;
return NULL;
}
static int seq_show(struct dfs_seq_file *seq, void *data)
{
/* data: The return value of the start or next*/
dfs_seq_puts(seq, "todo\n");
return 0;
}
static const struct dfs_seq_ops seq_ops = {
.start = seq_start,
.stop = seq_stop,
.next = seq_next,
.show = seq_show,
};
void proc_tty_register_driver(void *driver)
{
//todo
}
void proc_tty_unregister_driver(void *driver)
{
//todo
}
int proc_tty_init(void)
{
struct proc_dentry *dentry;
dentry = proc_mkdir("tty", NULL);
if (!dentry)
return -1;
proc_release(dentry);
dentry = proc_mkdir("tty/ldisc", NULL);
proc_release(dentry);
dentry = proc_mkdir_mode("tty/driver", S_IRUSR|S_IXUSR, NULL);
proc_release(dentry);
dentry = proc_create_data("tty/ldiscs", 0, NULL, NULL, NULL);
if (dentry)
{
dentry->seq_ops = &seq_ops;
}
proc_release(dentry);
dentry = proc_create_data("tty/drivers", 0, NULL, NULL, NULL);
if (dentry)
{
dentry->seq_ops = &seq_ops;
}
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_tty_init);

38
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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>
static int single_show(struct dfs_seq_file *seq, void *data)
{
dfs_seq_printf(seq, "%lu.%02lu %lu.%02lu\n",
(unsigned long)rt_tick_get_millisecond() / 1000, (unsigned long)(rt_tick_get_millisecond() % 1000) / 100,
(unsigned long)rt_tick_get_millisecond() / 1000, (unsigned long)(rt_tick_get_millisecond() % 1000) / 100);
return 0;
}
int proc_uptime_init(void)
{
struct proc_dentry *dentry = proc_create_single_data("uptime", 0, NULL, single_show, NULL);
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_uptime_init);

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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>
static int single_show(struct dfs_seq_file *seq, void *data)
{
dfs_seq_puts(seq, "\n \\ | /\n");
#ifdef RT_USING_SMART
dfs_seq_puts(seq, "- RT - Thread Smart Operating System\n");
#else
dfs_seq_puts(seq, "- RT - Thread Operating System\n");
#endif
dfs_seq_printf(seq, " / | \\ %d.%d.%d build %s %s\n",
(rt_int32_t)RT_VERSION_MAJOR, (rt_int32_t)RT_VERSION_MINOR, (rt_int32_t)RT_VERSION_PATCH,
__DATE__, __TIME__);
dfs_seq_puts(seq, " 2006 - 2022 Copyright by RT-Thread team\n");
return 0;
}
int proc_version_init(void)
{
struct proc_dentry *dentry = proc_create_single_data("version", 0, NULL, single_show, NULL);
proc_release(dentry);
return 0;
}
INIT_ENV_EXPORT(proc_version_init);

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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <rthw.h>
#include <rtdbg.h>
#include <fcntl.h>
#include <errno.h>
#include <dfs.h>
#include <dfs_fs.h>
#include <dfs_file.h>
#include <dfs_posix.h>
#include <dfs_mnt.h>
#include <dfs_dentry.h>
#include "proc.h"
#include "procfs.h"
#define PROC_DEBUG(...) //rt_kprintf
static int dfs_procfs_open(struct dfs_file *file)
{
rt_err_t ret = RT_EOK;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
RT_ASSERT(file->vnode->ref_count > 0);
if (file->vnode->ref_count > 1)
{
file->fpos = 0;
return ret;
}
if (entry->fops && entry->fops->open)
{
ret = entry->fops->open(file);
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, file->dentry->pathname, ret);
return ret;
}
static int dfs_procfs_close(struct dfs_file *file)
{
rt_err_t ret = RT_EOK;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
RT_ASSERT(file->vnode->ref_count > 0);
if (file->vnode->ref_count > 1)
{
return ret;
}
if (entry && entry->fops && entry->fops->close)
{
ret = entry->fops->close(file);
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, file->dentry->pathname, ret);
return ret;
}
static ssize_t dfs_procfs_read(struct dfs_file *file, void *buf, size_t count, off_t *pos)
{
ssize_t ret = -RT_ERROR;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
if (entry && entry->fops && entry->fops->read)
{
ret = entry->fops->read(file, buf, count, pos);
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, file->dentry->pathname, ret);
return ret;
}
static ssize_t dfs_procfs_write(struct dfs_file *file, const void *buf, size_t count, off_t *pos)
{
ssize_t ret = -RT_ERROR;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
if (entry && entry->fops && entry->fops->write)
{
ret = entry->fops->write(file, buf, count, pos);
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, file->dentry->pathname, ret);
return ret;
}
static int dfs_procfs_ioctl(struct dfs_file *file, int cmd, void *args)
{
int ret = -RT_ERROR;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
if (entry && entry->fops && entry->fops->ioctl)
{
ret = entry->fops->ioctl(file, cmd, args);
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, file->dentry->pathname, ret);
return ret;
}
static int dfs_procfs_getdents(struct dfs_file *file, struct dirent *dirp, uint32_t count)
{
int ret = 0;
rt_uint32_t index = 0;
struct dirent *d;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
if (entry)
{
struct proc_dentry *iter = RT_NULL, *tmp;
/* make integer count */
count = (count / sizeof(struct dirent));
if (count == 0)
{
return -EINVAL;
}
dfs_vfs_for_each_subnode(iter, tmp, entry, node)
{
if (iter == RT_NULL)
{
break;
}
if (index >= file->fpos)
{
d = dirp + index - file->fpos;
if (S_ISDIR(entry->mode))
{
d->d_type = DT_DIR;
}
else if (S_ISLNK(entry->mode))
{
d->d_type = DT_SYMLINK;
}
else
{
d->d_type = DT_REG;
}
d->d_namlen = rt_strlen(iter->name);
d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
rt_strncpy(d->d_name, iter->name, rt_strlen(iter->name) + 1);
ret ++;
}
index++;
if (index - file->fpos >= count)
{
break;
}
}
if (ret > 0)
{
file->fpos = index;
}
if (entry->fops && entry->fops->getdents && ret < count)
{
int r;
file->fpos -= index;
r = entry->fops->getdents(file, dirp + ret, (count - ret) * sizeof(struct dirent));
ret = ret * sizeof(struct dirent);
if (r > 0)
{
ret += r;
}
file->fpos += index;
}
else
{
ret = ret * sizeof(struct dirent);
}
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, file->dentry->pathname, ret);
return ret;
}
static int dfs_procfs_poll(struct dfs_file *file, struct rt_pollreq *req)
{
int ret = -RT_ERROR;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
if (entry && entry->fops && entry->fops->poll)
{
ret = entry->fops->poll(file, req);
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, file->dentry->pathname, ret);
return ret;
}
static int dfs_procfs_flush(struct dfs_file *file)
{
int ret = -RT_ERROR;
struct proc_dentry *entry = (struct proc_dentry *)file->vnode->data;
if (entry && entry->fops && entry->fops->flush)
{
ret = entry->fops->flush(file);
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, file->dentry->pathname, ret);
return ret;
}
static int dfs_procfs_mount(struct dfs_mnt *mnt, unsigned long rwflag, const void *data)
{
RT_ASSERT(mnt != RT_NULL);
return RT_EOK;
}
static int dfs_procfs_umount(struct dfs_mnt *mnt)
{
RT_ASSERT(mnt != RT_NULL);
return RT_EOK;
}
static int dfs_procfs_readlink(struct dfs_dentry *dentry, char *buf, int len)
{
int ret = 0;
struct proc_dentry *entry = dfs_proc_find(dentry->pathname);
if (entry)
{
if (S_ISLNK(entry->mode) && entry->data)
{
if (entry->ops && entry->ops->readlink)
{
ret = entry->ops->readlink(entry, buf, len);
}
else
{
rt_strncpy(buf, (const char *)entry->data, len);
buf[len - 1] = '\0';
ret = rt_strlen(buf);
}
}
proc_release(entry);
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, dentry->pathname, ret);
return ret;
}
static int dfs_procfs_unlink(struct dfs_dentry *dentry)
{
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, dentry->pathname, -1);
return -RT_ERROR;
}
static int dfs_procfs_stat(struct dfs_dentry *dentry, struct stat *st)
{
int ret = RT_EOK;
struct dfs_vnode *vnode;
if (dentry && dentry->vnode)
{
vnode = dentry->vnode;
st->st_dev = (dev_t)(dentry->mnt->dev_id);
st->st_ino = (ino_t)dfs_dentry_full_path_crc32(dentry);
st->st_gid = vnode->gid;
st->st_uid = vnode->uid;
st->st_mode = vnode->mode;
st->st_nlink = vnode->nlink;
st->st_size = vnode->size;
st->st_mtim.tv_nsec = vnode->mtime.tv_nsec;
st->st_mtim.tv_sec = vnode->mtime.tv_sec;
st->st_ctim.tv_nsec = vnode->ctime.tv_nsec;
st->st_ctim.tv_sec = vnode->ctime.tv_sec;
st->st_atim.tv_nsec = vnode->atime.tv_nsec;
st->st_atim.tv_sec = vnode->atime.tv_sec;
}
PROC_DEBUG(" %s %d >> %s ret: %d\n", __func__, __LINE__, dentry->pathname, ret);
return ret;
}
static int dfs_procfs_statfs(struct dfs_mnt *mnt, struct statfs *buf)
{
if (mnt && buf)
{
buf->f_bsize = 512;
buf->f_blocks = 2048 * 64; // 64M
buf->f_bfree = buf->f_blocks;
buf->f_bavail = buf->f_bfree;
}
PROC_DEBUG(" %s %d\n", __func__, __LINE__);
return RT_EOK;
}
static struct dfs_vnode *dfs_procfs_lookup(struct dfs_dentry *dentry)
{
struct dfs_vnode *vnode = RT_NULL;
struct proc_dentry *entry = dfs_proc_find(dentry->pathname);
if (entry)
{
vnode = dfs_vnode_create();
if (vnode)
{
vnode->nlink = 1;
vnode->size = 0;
if (S_ISDIR(entry->mode))
{
vnode->mode = entry->mode;
vnode->type = FT_DIRECTORY;
}
else if (S_ISLNK(entry->mode))
{
vnode->mode = entry->mode;
vnode->type = FT_SYMLINK;
}
else
{
vnode->mode = entry->mode;
vnode->type = FT_REGULAR;
}
vnode->data = entry;
vnode->mnt = dentry->mnt;
}
proc_release(entry);
}
PROC_DEBUG(" %s %d >> %s\n", __func__, __LINE__, dentry->pathname);
return vnode;
}
static struct dfs_vnode *dfs_procfs_create_vnode(struct dfs_dentry *dentry, int type, mode_t mode)
{
return RT_NULL;
}
static int dfs_procfs_free_vnode(struct dfs_vnode *vnode)
{
return 0;
}
static const struct dfs_file_ops _dev_fops =
{
.open = dfs_procfs_open,
.close = dfs_procfs_close,
.lseek = generic_dfs_lseek,
.read = dfs_procfs_read,
.write = dfs_procfs_write,
.ioctl = dfs_procfs_ioctl,
.getdents = dfs_procfs_getdents,
.poll = dfs_procfs_poll,
.flush = dfs_procfs_flush,
};
static const struct dfs_filesystem_ops _procfs_ops =
{
.name = "procfs",
.default_fops = &_dev_fops,
.mount = dfs_procfs_mount,
.umount = dfs_procfs_umount,
.readlink = dfs_procfs_readlink,
.unlink = dfs_procfs_unlink,
.stat = dfs_procfs_stat,
.statfs = dfs_procfs_statfs,
.lookup = dfs_procfs_lookup,
.create_vnode = dfs_procfs_create_vnode,
.free_vnode = dfs_procfs_free_vnode,
};
static struct dfs_filesystem_type _procfs =
{
.fs_ops = &_procfs_ops,
};
int dfs_procfs_init(void)
{
/* register procfs file system */
dfs_register(&_procfs);
return 0;
}
INIT_COMPONENT_EXPORT(dfs_procfs_init);
int proc_read_data(struct dfs_file *file, void *buf, size_t count, off_t *pos)
{
if (file->fpos >= file->vnode->size)
{
return 0;
}
if (file->data)
{
count = file->vnode->size - file->fpos >= count ? count : file->vnode->size - file->fpos;
rt_strncpy(buf, file->data + file->fpos, count);
file->fpos += count;
*pos = file->fpos;
}
else
{
return 0;
}
return count;
}

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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#ifndef __PROC_FS_H__
#define __PROC_FS_H__
#include <dfs_file.h>
int dfs_procfs_init(void);
int proc_read_data(struct dfs_file *file, void *buf, size_t count, off_t *pos);
#endif