111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
/*
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2005-01-26 Bernard The first version.
|
|
*/
|
|
|
|
#ifndef __DFS_FILE_H__
|
|
#define __DFS_FILE_H__
|
|
|
|
#include <dfs.h>
|
|
#include <dfs_fs.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
struct rt_pollreq;
|
|
|
|
struct dfs_file_ops
|
|
{
|
|
int (*open) (struct dfs_file *fd);
|
|
int (*close) (struct dfs_file *fd);
|
|
int (*ioctl) (struct dfs_file *fd, int cmd, void *args);
|
|
ssize_t (*read) (struct dfs_file *fd, void *buf, size_t count);
|
|
ssize_t (*write) (struct dfs_file *fd, const void *buf, size_t count);
|
|
int (*flush) (struct dfs_file *fd);
|
|
off_t (*lseek) (struct dfs_file *fd, off_t offset);
|
|
int (*getdents) (struct dfs_file *fd, struct dirent *dirp, uint32_t count);
|
|
|
|
int (*poll) (struct dfs_file *fd, struct rt_pollreq *req);
|
|
};
|
|
|
|
/* file descriptor */
|
|
#define DFS_FD_MAGIC 0xfdfd
|
|
|
|
struct dfs_vnode
|
|
{
|
|
uint16_t type; /* Type (regular or socket) */
|
|
|
|
char *path; /* Name (below mount point) */
|
|
char *fullpath; /* Full path is hash key */
|
|
int ref_count; /* Descriptor reference count */
|
|
rt_list_t list; /* The node of vnode hash table */
|
|
|
|
struct dfs_filesystem *fs;
|
|
const struct dfs_file_ops *fops;
|
|
uint32_t flags; /* self flags, is dir etc.. */
|
|
|
|
size_t size; /* Size in bytes */
|
|
void *data; /* Specific file system data */
|
|
};
|
|
|
|
struct dfs_file
|
|
{
|
|
uint16_t magic; /* file descriptor magic number */
|
|
uint32_t flags; /* Descriptor flags */
|
|
int ref_count; /* Descriptor reference count */
|
|
off_t pos; /* Current file position */
|
|
struct dfs_vnode *vnode; /* file node struct */
|
|
void *data; /* Specific fd data */
|
|
};
|
|
|
|
#ifdef RT_USING_SMART
|
|
struct dfs_mmap2_args
|
|
{
|
|
void *addr;
|
|
size_t length;
|
|
int prot;
|
|
int flags;
|
|
off_t pgoffset;
|
|
|
|
struct rt_lwp *lwp;
|
|
void *ret;
|
|
};
|
|
#endif
|
|
|
|
void dfs_vnode_mgr_init(void);
|
|
int dfs_vnode_init(struct dfs_vnode *vnode, int type, const struct dfs_file_ops *fops);
|
|
|
|
int dfs_file_is_open(const char *pathname);
|
|
int dfs_file_open(struct dfs_file *fd, const char *path, int flags);
|
|
int dfs_file_close(struct dfs_file *fd);
|
|
int dfs_file_ioctl(struct dfs_file *fd, int cmd, void *args);
|
|
ssize_t dfs_file_read(struct dfs_file *fd, void *buf, size_t len);
|
|
int dfs_file_getdents(struct dfs_file *fd, struct dirent *dirp, size_t nbytes);
|
|
int dfs_file_unlink(const char *path);
|
|
ssize_t dfs_file_write(struct dfs_file *fd, const void *buf, size_t len);
|
|
int dfs_file_flush(struct dfs_file *fd);
|
|
off_t dfs_file_lseek(struct dfs_file *fd, off_t offset);
|
|
|
|
int dfs_file_stat(const char *path, struct stat *buf);
|
|
int dfs_file_rename(const char *oldpath, const char *newpath);
|
|
int dfs_file_ftruncate(struct dfs_file *fd, off_t length);
|
|
#ifdef RT_USING_SMART
|
|
int dfs_file_mmap2(struct dfs_file *fd, struct dfs_mmap2_args *mmap2);
|
|
#endif
|
|
/* 0x5254 is just a magic number to make these relatively unique ("RT") */
|
|
#define RT_FIOFTRUNCATE 0x52540000U
|
|
#define RT_FIOGETADDR 0x52540001U
|
|
#define RT_FIOMMAP2 0x52540002U
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|