linux/fs/smb/client/reparse.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2024 Paulo Alcantara <[email protected]>
 */

#ifndef _CIFS_REPARSE_H
#define _CIFS_REPARSE_H

#include <linux/fs.h>
#include <linux/stat.h>
#include <linux/uidgid.h>
#include "fs_context.h"
#include "cifsglob.h"

/*
 * Used only by cifs.ko to ignore reparse points from files when client or
 * server doesn't support FSCTL_GET_REPARSE_POINT.
 */
#define IO_REPARSE_TAG_INTERNAL …

static inline dev_t reparse_nfs_mkdev(struct reparse_posix_data *buf)
{ … }

static inline dev_t wsl_mkdev(void *ptr)
{ … }

static inline kuid_t wsl_make_kuid(struct cifs_sb_info *cifs_sb,
				   void *ptr)
{ … }

static inline kgid_t wsl_make_kgid(struct cifs_sb_info *cifs_sb,
				   void *ptr)
{ … }

static inline u64 reparse_mode_nfs_type(mode_t mode)
{ … }

static inline u32 reparse_mode_wsl_tag(mode_t mode)
{ … }

/*
 * Match a reparse point inode if reparse tag and ctime haven't changed.
 *
 * Windows Server updates ctime of reparse points when their data have changed.
 * The server doesn't allow changing reparse tags from existing reparse points,
 * though it's worth checking.
 */
static inline bool reparse_inode_match(struct inode *inode,
				       struct cifs_fattr *fattr)
{ … }

static inline bool cifs_open_data_reparse(struct cifs_open_info_data *data)
{ … }

bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
				 struct cifs_fattr *fattr,
				 struct cifs_open_info_data *data);
int smb2_create_reparse_symlink(const unsigned int xid, struct inode *inode,
				struct dentry *dentry, struct cifs_tcon *tcon,
				const char *full_path, const char *symname);
int smb2_mknod_reparse(unsigned int xid, struct inode *inode,
		       struct dentry *dentry, struct cifs_tcon *tcon,
		       const char *full_path, umode_t mode, dev_t dev);
int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb, struct kvec *rsp_iov,
			     struct cifs_open_info_data *data);

#endif /* _CIFS_REPARSE_H */