first commit for chrg

2025-08-16 22:58:22 +08:00
commit 52a3ed5862
2306 changed files with 1021208 additions and 0 deletions
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2005-02-22     Bernard      The first version.
+ * 2023-05-05     Bernard      change to dfs v2.0
+ */
+
+#ifndef __DFS_H__
+#define __DFS_H__
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include "../../libc/compilers/common/include/dirent.h"
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/time.h>
+#include <sys/errno.h>
+#include <rtatomic.h>
+#include <rtdevice.h>
+
+#ifndef ATTR_MODE_SET
+#define ATTR_MODE_SET	(1 << 6)
+#endif
+
+#ifndef ATTR_ATIME_SET
+#define ATTR_ATIME_SET	(1 << 7)
+#endif
+
+#ifndef ATTR_MTIME_SET
+#define ATTR_MTIME_SET	(1 << 8)
+#endif
+
+#ifndef ATTR_UID_SET
+#define ATTR_UID_SET	(1 << 9)
+#endif
+
+#ifndef ATTR_GID_SET
+#define ATTR_GID_SET	(1 << 10)
+#endif
+
+#ifndef AT_SYMLINK_NOFOLLOW
+#define AT_SYMLINK_NOFOLLOW 0x100
+#endif
+
+#ifndef UTIME_NOW
+#define UTIME_NOW  0x3fffffff
+#endif
+
+#ifndef UTIME_OMIT
+#define UTIME_OMIT 0x3ffffffe
+#endif
+
+#ifndef DFS_FD_MAX
+#define DFS_FD_MAX              16
+#endif
+
+/*
+ * skip stdin/stdout/stderr normally
+ */
+#ifndef DFS_STDIO_OFFSET
+#define DFS_STDIO_OFFSET        3
+#endif
+
+#ifndef DFS_PATH_MAX
+#define DFS_PATH_MAX            4096
+#endif
+
+#ifndef SECTOR_SIZE
+#define SECTOR_SIZE             512
+#endif
+
+#define DFS_FS_FLAG_DEFAULT     0x00    /* default flag */
+#define DFS_FS_FLAG_FULLPATH    0x01    /* set full path to underlaying file system */
+
+/* File flags */
+#define DFS_F_FREAD     0x01
+#define DFS_F_FWRITE    0x02
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+rt_inline int dfs_fflags(int oflags)
+{
+    int rw = oflags & O_ACCMODE;
+
+    oflags &= ~O_ACCMODE;
+    return (rw + 1) | oflags;
+}
+
+rt_inline int dfs_oflags(int fflags)
+{
+    int rw = fflags & (DFS_F_FREAD | DFS_F_FWRITE);
+
+    fflags &= ~(DFS_F_FREAD | DFS_F_FWRITE);
+    return (rw - 1) | fflags;
+}
+
+struct dfs_fdtable
+{
+    uint32_t maxfd;
+    struct dfs_file **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);
+
+rt_err_t dfs_lock(void);
+void dfs_unlock(void);
+
+rt_err_t dfs_file_lock(void);
+void dfs_file_unlock(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 *fdtab, int fd);
+
+#ifdef DFS_USING_POSIX
+/* FD APIs */
+int fdt_fd_new(struct dfs_fdtable *fdt);
+struct dfs_file *fdt_get_file(struct dfs_fdtable* fdt, int fd);
+void fdt_fd_release(struct dfs_fdtable* fdt, int fd);
+int fd_new(void);
+int fdt_fd_associate_file(struct dfs_fdtable *fdt, int fd, struct dfs_file *file);
+struct dfs_file *fd_get(int fd);
+void fd_release(int fd);
+
+void fd_init(struct dfs_file *fd);
+
+struct dfs_fdtable *dfs_fdtable_get(void);
+struct dfs_fdtable *dfs_fdtable_get_global(void);
+int dfs_dup(int oldfd, int startfd);
+#endif /* DFS_USING_POSIX */
+
+struct dfs_file* dfs_file_create(void);
+void dfs_file_destroy(struct dfs_file *file);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif