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 +1,141 @@
+/*
+ * 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_FS_H__
+#define __DFS_FS_H__
+
+#include <dfs.h>
+#include <dfs_file.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define MS_RDONLY      1
+#define MS_NOSUID      2
+#define MS_NODEV       4
+#define MS_NOEXEC      8
+#define MS_SYNCHRONOUS 16
+#define MS_REMOUNT     32
+#define MS_MANDLOCK    64
+#define MS_DIRSYNC     128
+#define MS_NOATIME     1024
+#define MS_NODIRATIME  2048
+#define MS_BIND        4096
+#define MS_MOVE        8192
+#define MS_REC         16384
+#define MS_SILENT      32768
+#define MS_POSIXACL    (1<<16)
+#define MS_UNBINDABLE  (1<<17)
+#define MS_PRIVATE     (1<<18)
+#define MS_SLAVE       (1<<19)
+#define MS_SHARED      (1<<20)
+#define MS_RELATIME    (1<<21)
+#define MS_KERNMOUNT   (1<<22)
+#define MS_I_VERSION   (1<<23)
+#define MS_STRICTATIME (1<<24)
+#define MS_LAZYTIME    (1<<25)
+#define MS_NOREMOTELOCK (1<<27)
+#define MS_NOSEC       (1<<28)
+#define MS_BORN        (1<<29)
+#define MS_ACTIVE      (1<<30)
+#define MS_NOUSER      (1U<<31)
+
+#define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION|MS_LAZYTIME)
+
+/* file system partition table */
+struct dfs_partition
+{
+    uint8_t type; /* file system type */
+    off_t offset; /* partition start offset */
+    size_t size;  /* partition size */
+    rt_sem_t lock;
+};
+
+struct dfs_attr
+{
+    unsigned int ia_valid;
+    uid_t st_uid;
+    gid_t st_gid;
+    mode_t st_mode;
+    struct timespec ia_atime;
+    struct timespec ia_mtime;
+};
+
+struct dfs_mnt;
+struct dfs_dentry;
+struct dfs_vnode;
+
+struct statfs;
+
+struct dfs_filesystem_ops
+{
+    const char *name;
+    uint32_t flags;
+#define FS_NEED_DEVICE 0x1
+
+    const struct dfs_file_ops *default_fops;
+
+    int (*mount)(struct dfs_mnt *mnt, unsigned long rwflag, const void *data);
+    int (*umount)(struct dfs_mnt *mnt);
+
+    int (*mkfs)(rt_device_t devid, const char *fs_name);
+
+    int (*readlink)(struct dfs_dentry *dentry, char *buf, int len);
+    int (*link)(struct dfs_dentry *src_dentry, struct dfs_dentry *dst_dentry); /*hard link interface */
+    int (*unlink)(struct dfs_dentry *dentry);
+    int (*symlink)(struct dfs_dentry *parent_dentry, const char *target, const char *newpath); /*soft link interface*/
+
+    int (*rename)(struct dfs_dentry *old_dentry, struct dfs_dentry *new_dentry);
+    int (*stat)(struct dfs_dentry *dentry, struct stat *buf);
+
+    int (*statfs)(struct dfs_mnt *mnt, struct statfs *buf);
+
+    int (*setattr) (struct dfs_dentry *dentry, struct dfs_attr *attr);
+
+    struct dfs_vnode* (*lookup)(struct dfs_dentry *dentry);
+
+    struct dfs_vnode* (*create_vnode)(struct dfs_dentry *dentry, int type, mode_t mode);
+    int (*free_vnode)(struct dfs_vnode* vnode);
+};
+
+struct dfs_filesystem_type
+{
+    const struct dfs_filesystem_ops *fs_ops;
+    struct dfs_filesystem_type *next;
+};
+
+struct dfs_filesystem_type *dfs_filesystems(void);
+int dfs_unregister(struct dfs_filesystem_type *fs);
+int dfs_register(struct dfs_filesystem_type *fs);
+const char *dfs_filesystem_get_mounted_path(struct rt_device *device);
+
+int dfs_remount(const char *path, rt_ubase_t flags, void *data);
+int dfs_mount(const char *device_name,
+            const char *path,
+            const char *filesystemtype,
+            unsigned long rwflag,
+            const void *data);
+int dfs_umount(const char *specialfile, int flags);
+int dfs_unmount(const char *specialfile);
+int dfs_is_mounted(struct dfs_mnt *mnt);
+int dfs_mkfs(const char *fs_name, const char *device_name);
+int dfs_statfs(const char *path, struct statfs *buffer);
+int dfs_filesystem_get_partition(struct dfs_partition *part,
+                                uint8_t *buf,
+                                uint32_t pindex);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif