fix readdir issue.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@147 bbd45198-f89e-11dd-88c7-29a3b14d5316

filesystem/dfs/filesystems/elmfat/dfs_elm.c

@@ -302,9 +302,9 @@ int dfs_elm_getdents(struct dfs_fd* file, struct dfs_dirent* dirp, rt_uint32_t c
 		if (fno.fattrib & AM_DIR) d->d_type &= DFS_DT_DIR;
 		else d->d_type &= DFS_DT_REG;
 
-		d->d_namlen = rt_strlen(fn) - 1;
+		d->d_namlen = rt_strlen(fn);
 		d->d_reclen = (rt_uint16_t)sizeof(struct dfs_dirent);
-		rt_strncpy(d->d_name, fn, rt_strlen(fn));
+		rt_strncpy(d->d_name, fn, rt_strlen(fn) + 1);
 
 		index ++;
 		if ( index * sizeof(struct dfs_dirent) >= count )

filesystem/dfs/src/dfs_posix.c

@@ -356,7 +356,11 @@ DIR* opendir(const char* name)
 			dfile_raw_close(d);
 			fd_put(d);
 		}
-		else t->fd = fd;
+		else
+		{
+		    rt_memset(t, 0, sizeof(DIR));
+		    t->fd = fd;
+		}
 		fd_put(d);
 		return t;
 	}