关于RTT的文件系统

发布于 2012-06-30 10:13:37 浏览：9642 订阅该版

大家好！
 我在9260板子上测试用RTT，能够运行起来，但有三个关于文件系统的问题想请教各位高手：
（我没有改动代码，只是在rtconfig.h中更改配置）
   一，ROMFS和NFS文件系统为什么都加载失败，我加了调试信息发现是在下边代码处出错的
```
if ((strcmp(fullpath, "/") != 0) && (strcmp(fullpath, "/dev") != 0))
{
    struct dfs_fd fd;

if (dfs_file_open(&fd, fullpath, DFS_O_RDONLY | DFS_O_DIRECTORY) < 0)
    {
        rt_free(fullpath);
        rt_set_errno(-DFS_STATUS_ENOTDIR);
        return DFS_STATUS_ENOTDIR+1;//-1;
    }
    dfs_file_close(&fd);
}```
我也试过直接用"/"目录挂载nfs文件系统，在下边代码处失败：
``` /* call mount of this filesystem */
 else if (ops->mount(fs, rwflag, data) < 0)```

我想请教的是，这两个文件系统为什么加载不起来，有什么条件没有，我没有找到相关说明。
DEVFS就可以加载成功，并有一个/dev文件夹，cd命令可以进入。

二，UFFS文件系统编译通不过，提示如下：
> 
scons: *** [componentsdfsfilesystemsuffssrcuffsuffs_badblock.o]Error 1
In file included from /uffs/uffs_ecc.h:42:0,
from uffs_buf.c:45:
/arm-none-eabi/include/string.h:26:7: error: conflicting types for 'rt_memset'
/rtthread.h:374:7: note: previous declaration of 'rt_memset' was here

scons: *** [buildcomponentsdfsfilesystemsuffssrcuffsuffs_buf.o] Error 1
In file included from uffssrcuffsuffs_debug.c:41:0:
/arm-none-eabi/include/string.h:26:7: error: conflicting types for'rt_memset'
/rtthread.h:374:7: note: previous declaration of 'rt_memset' was here

scons: *** [buildcomponentsdfsfilesystemsuffssrcuffsuffs_debug.o] Error 1

scons: building terminated because of errors.

好象是rtthread.h与string.h中的rt_memset函数冲突，可是string.h中并没有这个函数啊
为什么？
三，yaffs2文件系统要自己移植吗？

谢谢各位！

19 个回答

prife 2012-06-30

这家伙很懒，什么也没写！

kevinli 2012-06-30

这家伙很懒，什么也没写！

>报告RT-Thread版本
>报告BSP目录
>报告使用的编译器
>
>报告你的rtconfig.h
>
>描述问题的时候，请详细的描述是如何配置而导致，而不是直接给出错误信息。谢谢

---

版本：1.0.1
BSP目录：at91sam9260
编译器：gcc (arm-2011.03-42-arm-none-eabi)
rtconfig.h 如下：（以挂载nfs文件系统为例）

```
/* RT-Thread config file */
#ifndef __RTTHREAD_CFG_H__
#define __RTTHREAD_CFG_H__

/* RT_NAME_MAX*/
#define RT_NAME_MAX	32

/* RT_ALIGN_SIZE*/
#define RT_ALIGN_SIZE	4

/* PRIORITY_MAX */
#define RT_THREAD_PRIORITY_MAX	256

/* Tick per Second */
#define RT_TICK_PER_SECOND	100

/* SECTION: RT_DEBUG */
/* Thread Debug */
#define RT_DEBUG
//#define SCHEDULER_DEBUG
/* #define RT_THREAD_DEBUG */

#define RT_USING_OVERFLOW_CHECK

/* Using Hook */
#define RT_USING_HOOK

/* Using Software Timer */
#define RT_USING_TIMER_SOFT
#define RT_TIMER_THREAD_PRIO		8
#define RT_TIMER_THREAD_STACK_SIZE	512
#define RT_TIMER_TICK_PER_SECOND	10

/* SECTION: IPC */
/* Using Semaphore */
#define RT_USING_SEMAPHORE

/* Using Mutex */
#define RT_USING_MUTEX

/* Using Event */
#define RT_USING_EVENT

/* Using MailBox */
#define RT_USING_MAILBOX

/* Using Message Queue */
#define RT_USING_MESSAGEQUEUE

/* SECTION: Memory Management */
/* Using Memory Pool Management*/
#define RT_USING_MEMPOOL

/* Using Dynamic Heap Management */
#define RT_USING_HEAP

/* Using Small MM */
/* #define RT_USING_SMALL_MEM */

/* Using SLAB Allocator */
#define RT_USING_SLAB

/* SECTION: Device System */
/* Using Device System */
#define RT_USING_DEVICE

/* Using Module System */
#define RT_USING_MODULE
#define RT_USING_LIBDL

/* SECTION: Console options */
#define RT_USING_CONSOLE
/* the buffer size of console */
#define RT_CONSOLEBUF_SIZE	128

/* SECTION: finsh, a C-Express shell */
/* Using FinSH as Shell*/
#define RT_USING_FINSH
/* Using symbol table */
#define FINSH_USING_SYMTAB
#define FINSH_USING_DESCRIPTION
#define FINSH_THREAD_STACK_SIZE 4096

/* SECTION: the runtime libc library */
/* the runtime libc library */
#define RT_USING_NEWLIB
//#define RT_USING_PTHREADS

/* SECTION: C++ support */
/* Using C++ support */
/* #define RT_USING_CPLUSPLUS */

/* SECTION: Device filesystem support */
/* using DFS support */
#define RT_USING_DFS
//#define RT_USING_DFS_ELMFAT
/* use long file name feature 			*/
#define RT_DFS_ELM_USE_LFN			2
#define RT_DFS_ELM_REENTRANT
/* the max number of file length 		*/
#define RT_DFS_ELM_MAX_LFN			128
/* #define RT_USING_DFS_YAFFS2 */
#define RT_USING_DFS_DEVFS
//#define RT_USING_DFS_UFFS
//#define RT_USING_DFS_ROMFS
#define RT_USING_DFS_NFS
#define RT_NFS_HOST_EXPORT		"192.168.0.108:/home/nfs"

#define DFS_USING_WORKDIR

/* the max number of mounted filesystem */
#define DFS_FILESYSTEMS_MAX		4
/* the max number of opened files 		*/
#define DFS_FD_MAX					16
/* the max number of cached sector 		*/
#define DFS_CACHE_MAX_NUM   		4

/* Enable freemodbus protocol stack*/
/* #define RT_USING_MODBUS */

#define RT_USING_LED

//#define RT_USING_MMCSD

#define RT_USING_DBGU
/* #define RT_USING_UART0 */
/* #define RT_USING_UART1 */
/* #define RT_USING_UART2 */
/* #define RT_USING_UART3 */

/* SECTION: lwip, a lightweight TCP/IP protocol stack */
/* Using lightweight TCP/IP protocol stack */
#define RT_USING_LWIP
#define RT_LWIP_DNS

#define LWIP_NETIF_LINK_CALLBACK 1

/* Trace LwIP protocol */
// #define RT_LWIP_DEBUG

/* Enable ICMP protocol */
#define RT_LWIP_ICMP

/* Enable IGMP protocol */
#define RT_LWIP_IGMP

/* Enable UDP protocol */
#define RT_LWIP_UDP

/* Enable TCP protocol */
#define RT_LWIP_TCP

/* the number of simulatenously active TCP connections*/
#define RT_LWIP_TCP_PCB_NUM	5

/* TCP sender buffer space */
#define RT_LWIP_TCP_SND_BUF	1024*10

/* TCP receive window. */
#define RT_LWIP_TCP_WND	1024*8

/* Enable SNMP protocol */
/* #define RT_LWIP_SNMP */

/* Using DHCP */
/* #define RT_LWIP_DHCP */

/* ip address of target */
#define RT_LWIP_IPADDR0	192
#define RT_LWIP_IPADDR1	168
#define RT_LWIP_IPADDR2	0
#define RT_LWIP_IPADDR3	210

/* gateway address of target */
#define RT_LWIP_GWADDR0	192
#define RT_LWIP_GWADDR1	168
#define RT_LWIP_GWADDR2	0
#define RT_LWIP_GWADDR3	254

/* mask address of target */
#define RT_LWIP_MSKADDR0	255
#define RT_LWIP_MSKADDR1	255
#define RT_LWIP_MSKADDR2	255
#define RT_LWIP_MSKADDR3	0

/* the number of blocks for pbuf */
#define RT_LWIP_PBUF_NUM	16

/* the number of simultaneously queued TCP */
#define RT_LWIP_TCP_SEG_NUM    40

/* thread priority of tcpip thread */
#define RT_LWIP_TCPTHREAD_PRIORITY	128

/* mail box size of tcpip thread to wait for */
#define RT_LWIP_TCPTHREAD_MBOX_SIZE	32

/* thread stack size of tcpip thread */
#define RT_LWIP_TCPTHREAD_STACKSIZE	4096

/* thread priority of ethnetif thread */
#define RT_LWIP_ETHTHREAD_PRIORITY	144

/* mail box size of ethnetif thread to wait for */
#define RT_LWIP_ETHTHREAD_MBOX_SIZE	32

/* thread stack size of ethnetif thread */
#define RT_LWIP_ETHTHREAD_STACKSIZE	1024

/* SECTION: RTGUI support */
/* using RTGUI support */
/* #define RT_USING_RTGUI */

/* name length of RTGUI object */
//#define RTGUI_NAME_MAX		16
/* support 16 weight font */
//#define RTGUI_USING_FONT16
/* support 16 weight font */
//#define RTGUI_USING_FONT12
/* support Chinese font */
//#define RTGUI_USING_FONTHZ
/* use DFS as file interface */
//#define RTGUI_USING_DFS_FILERW
/* use font file as Chinese font */
/* #define RTGUI_USING_HZ_FILE */
/* use Chinese bitmap font */
//#define RTGUI_USING_HZ_BMP
/* use small size in RTGUI */
/* #define RTGUI_USING_SMALL_SIZE */
/* use mouse cursor */
/* #define RTGUI_USING_MOUSE_CURSOR */

/* SECTION: FTK support */
/* using FTK support */
/* #define RT_USING_FTK */

/*
 * Note on FTK:
 * 
 * FTK depends :
 * #define RT_USING_NEWLIB
 * #define DFS_USING_WORKDIR
 * 
 * And the maximal length must great than 64
 * #define RT_DFS_ELM_MAX_LFN	128
 */

#endif
```

谢谢！

prife 2012-06-30

这家伙很懒，什么也没写！

prife 2012-06-30

这家伙很懒，什么也没写！

kevinli 2012-06-30

这家伙很懒，什么也没写！

```
/*
 * File      : application.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author		Notes
 * 2011-01-13     weety		first version
 */

/**
 * @addtogroup at91sam9260
 */
/*@{*/

#include <rtthread.h>

#ifdef RT_USING_DFS
/* dfs init */
#include <dfs_init.h>
/* dfs filesystem:ELM FatFs filesystem init */
#include <dfs_elm.h>
/* dfs Filesystem APIs */
#include <dfs_fs.h>
#ifdef RT_USING_DFS_UFFS
/* dfs filesystem:UFFS filesystem init */
#include <dfs_uffs.h>
#endif
#endif

#if defined(RT_USING_DFS_DEVFS)
#include <devfs.h>
#endif

#ifdef RT_USING_MMCSD
#include <mmcsd_core.h>
#include "at91_mci.h"
#endif

#ifdef RT_USING_LWIP
#include <netif/ethernetif.h>
#include <arch/sys_arch_init.h>
#include "macb.h"
#endif

#ifdef RT_USING_LED
#include "led.h"
#endif

#define RT_INIT_THREAD_STACK_SIZE (2*1024)

#ifdef RT_USING_DFS_ROMFS
#include <dfs_romfs.h>
#endif

void rt_init_thread_entry(void* parameter)
{
/* Filesystem Initialization */
#ifdef RT_USING_DFS
	{
		/* init the device filesystem */
		dfs_init();

#if defined(RT_USING_DFS_ELMFAT)
		/* init the elm chan FatFs filesystam*/
		elm_init();
#endif

#if defined(RT_USING_DFS_ROMFS)
{
      int ret;
		dfs_romfs_init();
		if ((ret=dfs_mount(RT_NULL, "/rom", "rom", 0, &romfs_root)) == 0)
		{
			rt_kprintf("ROM File System initialized!
");
		}
		else
			rt_kprintf("ROM File System initialzation failed!ret=%d
",ret);
}
#endif

#if defined(RT_USING_DFS_DEVFS)
		devfs_init();
		if (dfs_mount(RT_NULL, "/dev", "devfs", 0, 0) == 0)
			rt_kprintf("Device File System initialized!
");
		else
			rt_kprintf("Device File System initialzation failed!
");

#ifdef RT_USING_NEWLIB
		/* init libc */
		libc_system_init("uart0");
		#endif
#endif

#if defined(RT_USING_DFS_UFFS)
	{
		/* init the uffs filesystem */
		dfs_uffs_init();

/* mount flash device as flash directory */
		if(dfs_mount("nand0", "/nand0", "uffs", 0, 0) == 0)
			rt_kprintf("UFFS File System initialized!
");
		else
			rt_kprintf("UFFS File System initialzation failed!
");
	}
#endif

#ifdef RT_USING_MMCSD
	rt_mmcsd_core_init();
	rt_mmcsd_blk_init();
	at91_mci_init();
	rt_thread_delay(RT_TICK_PER_SECOND*2);
	/* mount sd card fat partition 1 as root directory */
		if (dfs_mount("sd0", "/", "elm", 0, 0) == 0)
		{
			rt_kprintf("File System initialized!
");
		}
		else
			rt_kprintf("File System initialzation failed!
");
#endif
	}
#endif

#ifdef RT_USING_LWIP
	{
		/* register ethernetif device */
		eth_system_device_init();
		rt_hw_macb_init();
		/* re-init device driver */
		//rt_device_init_all();
		/* init lwip system */
		lwip_sys_init();
		rt_kprintf("TCP/IP initialized!
");
	}
#endif

}

#ifdef RT_USING_LED
void rt_led_thread_entry(void* parameter)
{
	rt_uint8_t cnt = 0;
	led_init();
	while(1)
	{
		/* light on leds for one second */
		rt_thread_delay(40);
		cnt++;
		if (cnt&0x01)
			led_on(1);
		else
			led_off(1);
		if (cnt&0x02)
			led_on(2);
		else
			led_off(2);
		if (cnt&0x04)
			led_on(3);
		else
			led_off(3);
			
	}
}
#endif

int rt_application_init()
{
	rt_thread_t init_thread;
#ifdef RT_USING_LED
	rt_thread_t led_thread;
#endif

#if (RT_THREAD_PRIORITY_MAX == 32)
	init_thread = rt_thread_create("init",
								rt_init_thread_entry, RT_NULL,
								RT_INIT_THREAD_STACK_SIZE, 8, 20);
#ifdef RT_USING_LED
	led_thread = rt_thread_create("led",
								rt_led_thread_entry, RT_NULL,
								512, 20, 20);
#endif
								
#else
	init_thread = rt_thread_create("init",
								rt_init_thread_entry, RT_NULL,
								RT_INIT_THREAD_STACK_SIZE, 80, 20);
#ifdef RT_USING_LED
	led_thread = rt_thread_create("led",
								rt_led_thread_entry, RT_NULL,
								512, 200, 20);
#endif
								
#endif

if (init_thread != RT_NULL)
		rt_thread_startup(init_thread);
#ifdef RT_USING_LED
	if(led_thread != RT_NULL)
		rt_thread_startup(led_thread);
#endif

return 0;
}

/* NFSv3 Initialization */
#if defined(RT_USING_DFS) && defined(RT_USING_LWIP) && defined(RT_USING_DFS_NFS)
#include <dfs_nfs.h>
void nfs_start(void)
{
   int ret ;
	nfs_init();
   ret = dfs_mount(RT_NULL, "/nfs", "nfs", 0, RT_NFS_HOST_EXPORT);
	if ( ret == 0)
	{
		rt_kprintf("NFSv3 File System initialized!
");
	}
	else
		rt_kprintf("NFSv3 File System initialzation failed!ErrNo=%d
",rt_get_errno());
}

#include "finsh.h"
FINSH_FUNCTION_EXPORT(nfs_start, start net filesystem);
#endif

/*@}*/
```

我就加了一个失败时取错误代码。
谢谢！