#include <dfs.h>
#include <dfs_fs.h>
#include <dfs_dentry.h>
#include <dfs_file.h>
#include <dfs_mnt.h>
#include <rtservice.h>
#include "dfs_private.h"
#include <rtdbg.h>
#include <finsh.h>

dfs.c 的引用(Include)关系图:

宏定义
#define	DBG_TAG "DFS"

#define	DBG_LVL DBG_INFO

函数
rt_err_t	dfs_lock (void)

void	dfs_unlock (void)

rt_err_t	dfs_file_lock (void)

void	dfs_file_unlock (void)

int	dfs_init (void)

	INIT_PREV_EXPORT (dfs_init)

int	fdt_fd_new (struct dfs_fdtable *fdt)

void	fdt_fd_release (struct dfs_fdtable *fdt, int fd)

struct dfs_file *	fdt_get_file (struct dfs_fdtable *fdt, int fd)

int	fdt_fd_associate_file (struct dfs_fdtable fdt, int fd, struct dfs_file file)

int	fd_new (void)

void	fd_release (int fd)

struct dfs_file *	fd_get (int fd)

struct dfs_fdtable *	dfs_fdtable_get (void)

struct dfs_fdtable *	dfs_fdtable_get_global (void)

int	dfs_fdtable_dup (struct dfs_fdtable fdt_dst, struct dfs_fdtable fdt_src, int fd_src)

int	dfs_fdtable_drop_fd (struct dfs_fdtable *fdt, int fd)

int	dfs_dup (int oldfd, int startfd)

int	dfs_dup_to (int oldfd, struct dfs_fdtable *fdtab)

int	dfs_dup_from (int oldfd, struct dfs_fdtable *fdtab)

int	sys_dup (int oldfd)

rt_err_t	sys_dup2 (int oldfd, int newfd)

const char *	dfs_subdir (const char directory, const char filename)

	RTM_EXPORT (dfs_subdir)

char *	dfs_normalize_path (const char directory, const char filename)

	RTM_EXPORT (dfs_normalize_path)

int	list_fd (void)

	MSH_CMD_EXPORT (list_fd, list file descriptor)

int	dfs_fd_dump (int argc, char **argv)

	MSH_CMD_EXPORT_ALIAS (dfs_fd_dump, fd_dump, fd dump)

宏定义说明

◆ DBG_TAG

#define DBG_TAG "DFS"

在文件 dfs.c 第 23 行定义.

◆ DBG_LVL

#define DBG_LVL DBG_INFO

在文件 dfs.c 第 24 行定义.

函数说明

◆ dfs_lock()

rt_err_t dfs_lock ( void )

this function will lock device file system.

注解: please don't invoke it on ISR.

在文件 dfs.c 第 120 行定义.

{
    rt_err_t result = -RT_EBUSY;
 
    while (result == -RT_EBUSY)
    {
        result = rt_mutex_take(&fslock, RT_WAITING_FOREVER);
    }
 
    return result;
}

引用了 rt_mutex_take() , 以及 RT_WAITING_FOREVER.

函数调用图:

这是这个函数的调用关系图:

◆ dfs_unlock()

void dfs_unlock ( void )

this function will lock device file system.

注解: please don't invoke it on ISR.

在文件 dfs.c 第 137 行定义.

{
    rt_mutex_release(&fslock);
}

引用了 rt_mutex_release().

函数调用图:

这是这个函数的调用关系图: