diff options
Diffstat (limited to 'filesystem/dfs/include/dfs_fs.h')
| -rw-r--r-- | filesystem/dfs/include/dfs_fs.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/filesystem/dfs/include/dfs_fs.h b/filesystem/dfs/include/dfs_fs.h new file mode 100644 index 0000000000..4299e0d6ba --- /dev/null +++ b/filesystem/dfs/include/dfs_fs.h @@ -0,0 +1,87 @@ +/*
++------------------------------------------------------------------------------
+| Project : Device Filesystem
++------------------------------------------------------------------------------
+| Copyright 2004, 2005 www.fayfayspace.org.
+| All rights reserved.
+|------------------------------------------------------------------------------
+| File : dfs_fs.h, the filesystem related defines of Device FileSystem
+|------------------------------------------------------------------------------
+| Chang Logs:
+| Date Author Notes
+| 2005-02-22 ffxz The first version.
++------------------------------------------------------------------------------
+*/
+#ifndef __DFS_FS_H__
+#define __DFS_FS_H__
+
+#include <dfs_def.h>
+#include <dfs_config.h>
+
+/* Pre-declaration */
+struct dfs_filesystem;
+struct dfs_fd;
+struct dfs_dirent;
+
+/* File system operations struct */
+struct dfs_filesystem_operation
+{
+ char name[DFS_FS_NAME_MAX + 1];
+
+ int (*mount) (struct dfs_filesystem* fs);
+ int (*unmount) (struct dfs_filesystem* fs);
+
+ int (*open) (struct dfs_fd* fd);
+ int (*close) (struct dfs_fd* fd);
+ int (*ioctl) (struct dfs_fd* fd, int cmd, void *args);
+ int (*read) (struct dfs_fd* fd, void* buf, rt_size_t count);
+ int (*write) (struct dfs_fd* fd, const void* buf, rt_size_t count);
+ int (*lseek) (struct dfs_fd* fd, rt_off_t offset);
+ int (*getdents) (struct dfs_fd* fd, struct dfs_dirent* dirp, rt_uint32_t count);
+
+ int (*unlink) (struct dfs_filesystem* fs, const char* pathname);
+ int (*stat) (struct dfs_filesystem* fs, const char* filename, struct dfs_stat* buf);
+ int (*rename) (struct dfs_filesystem* fs, const char* oldpath, const char* newpath);
+};
+
+/* Mounted file system */
+struct dfs_filesystem
+{
+ rt_device_t dev_id; /* Attached device */
+
+ char path[DFS_PATH_MAX + 1]; /* File system mount point */
+ struct dfs_filesystem_operation* ops; /* Operations for file system type */
+ rt_uint32_t block_id; /* Current block_id on attached device */
+
+ void *data; /* Specific file system data */
+};
+
+/* file system partition table */
+struct dfs_partition
+{
+ rt_uint8_t type; /* file system type */
+ rt_off_t offset; /* partition start offset */
+ rt_size_t size; /* partition size */
+ rt_sem_t lock;
+};
+
+int dfs_register(struct dfs_filesystem_operation* ops);
+struct dfs_filesystem* dfs_filesystem_lookup(const char *path);
+rt_err_t dfs_filesystem_get_partition(struct dfs_partition* part, rt_uint8_t* buf, rt_uint32_t pindex);
+
+int dfs_mount(const char* device_name, const char* path,
+ const char* filesystemtype, rt_uint32_t rwflag, const
+ void* data);
+int dfs_unmount(const char *specialfile);
+
+/* extern variable */
+extern struct dfs_filesystem_operation* filesystem_operation_table[];
+extern struct dfs_filesystem filesystem_table[];
+
+extern rt_sem_t filesystem_table_lock;
+extern rt_sem_t filesystem_operation_table_lock;
+
+extern char working_directory[];
+extern rt_sem_t working_directory_lock;
+
+#endif
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