RT-Thread_v4.1.1

components/dfs/include/dfs.h

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2005-02-22     Bernard      The first version.
+ */
+
+#ifndef __DFS_H__
+#define __DFS_H__
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/time.h>
+#include <rtdevice.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef DFS_FILESYSTEMS_MAX
+#define DFS_FILESYSTEMS_MAX     4
+#endif
+
+#ifndef DFS_FD_MAX
+#define DFS_FD_MAX              16
+#endif
+
+/*
+ * skip stdin/stdout/stderr normally
+ */
+#ifndef DFS_FD_OFFSET
+#define DFS_FD_OFFSET           3
+#endif
+
+#ifndef DFS_PATH_MAX
+#define DFS_PATH_MAX             DIRENT_NAME_MAX
+#endif
+
+#ifndef SECTOR_SIZE
+#define SECTOR_SIZE              512
+#endif
+
+#ifndef DFS_FILESYSTEM_TYPES_MAX
+#define DFS_FILESYSTEM_TYPES_MAX 2
+#endif
+
+#define DFS_FS_FLAG_DEFAULT     0x00    /* default flag */
+#define DFS_FS_FLAG_FULLPATH    0x01    /* set full path to underlaying file system */
+
+/* File types */
+#define FT_REGULAR               0   /* regular file */
+#define FT_SOCKET                1   /* socket file  */
+#define FT_DIRECTORY             2   /* directory    */
+#define FT_USER                  3   /* user defined */
+#define FT_DEVICE                4   /* device */
+
+/* File flags */
+#define DFS_F_OPEN              0x01000000
+#define DFS_F_DIRECTORY         0x02000000
+#define DFS_F_EOF               0x04000000
+#define DFS_F_ERR               0x08000000
+
+struct dfs_fdtable
+{
+    uint32_t maxfd;
+    struct dfs_fd **fds;
+};
+
+/* Initialization of dfs */
+int dfs_init(void);
+
+char *dfs_normalize_path(const char *directory, const char *filename);
+const char *dfs_subdir(const char *directory, const char *filename);
+
+int fd_is_open(const char *pathname);
+struct dfs_fdtable *dfs_fdtable_get(void);
+
+void dfs_lock(void);
+void dfs_unlock(void);
+
+#ifdef DFS_USING_POSIX
+/* FD APIs */
+int fd_new(void);
+struct dfs_fd *fd_get(int fd);
+void fd_put(struct dfs_fd *fd);
+#endif /* DFS_USING_POSIX */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif