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