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