/*
   *   fs/cifs/cifsproto.h
   *

   *   Copyright (c) International Business Machines  Corp., 2002,2008

   *   Author(s): Steve French (sfrench@us.ibm.com)
   *
   *   This library is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU Lesser General Public License as published
   *   by the Free Software Foundation; either version 2.1 of the License, or
   *   (at your option) any later version.
   *
   *   This library is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
   *   the GNU Lesser General Public License for more details.
   *
   *   You should have received a copy of the GNU Lesser General Public License
   *   along with this library; if not, write to the Free Software

   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

   */
  #ifndef _CIFSPROTO_H
  #define _CIFSPROTO_H
  #include <linux/nls.h>

  #include "trace.h"

  #ifdef CONFIG_CIFS_DFS_UPCALL
  #include "dfs_cache.h"
  #endif

  
  struct statfs;

  struct smb_vol;

  struct smb_rqst;

  
  /*
   *****************************************************************
   * All Prototypes
   *****************************************************************
   */
  
  extern struct smb_hdr *cifs_buf_get(void);
  extern void cifs_buf_release(void *);
  extern struct smb_hdr *cifs_small_buf_get(void);
  extern void cifs_small_buf_release(void *);

  extern void free_rsp_buf(int, void *);

  extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
  			unsigned int /* length */);

  extern unsigned int _get_xid(void);
  extern void _free_xid(unsigned int);

  #define get_xid()							\
  ({									\

  	unsigned int __xid = _get_xid();				\

  	cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d
  ",		\

  		 __func__, __xid,					\
  		 from_kuid(&init_user_ns, current_fsuid()));		\

  	trace_smb3_enter(__xid, __func__);				\
  	__xid;								\

  })

  #define free_xid(curr_xid)						\
  do {									\
  	_free_xid(curr_xid);						\
  	cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d
  ",		\
  		 __func__, curr_xid, (int)rc);				\
  	if (rc)								\

  		trace_smb3_exit_err(curr_xid, __func__, (int)rc);	\

  	else								\
  		trace_smb3_exit_done(curr_xid, __func__);		\

  } while (0)

  extern int init_cifs_idmap(void);
  extern void exit_cifs_idmap(void);

  extern int init_cifs_spnego(void);
  extern void exit_cifs_spnego(void);

  extern char *build_path_from_dentry(struct dentry *);

  extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
  						    bool prefix);

  extern char *cifs_build_path_to_root(struct smb_vol *vol,
  				     struct cifs_sb_info *cifs_sb,

  				     struct cifs_tcon *tcon,
  				     int add_treename);

  extern char *build_wildcard_path_from_dentry(struct dentry *direntry);

  extern char *cifs_compose_mount_options(const char *sb_mountdata,
  		const char *fullpath, const struct dfs_info3_param *ref,
  		char **devname);

  /* extern void renew_parental_timestamps(struct dentry *direntry);*/

  extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
  					struct TCP_Server_Info *server);

  extern void DeleteMidQEntry(struct mid_q_entry *midEntry);

  extern void cifs_delete_mid(struct mid_q_entry *mid);

  extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);

  extern void cifs_wake_up_task(struct mid_q_entry *mid);

  extern int cifs_handle_standard(struct TCP_Server_Info *server,
  				struct mid_q_entry *mid);

  extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);

  extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);

  extern int cifs_call_async(struct TCP_Server_Info *server,
  			struct smb_rqst *rqst,
  			mid_receive_t *receive, mid_callback_t *callback,

  			mid_handle_t *handle, void *cbdata, const int flags,
  			const struct cifs_credits *exist_credits);

  extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);

  extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,

  			  struct TCP_Server_Info *server,

  			  struct smb_rqst *rqst, int *resp_buf_type,
  			  const int flags, struct kvec *resp_iov);

  extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,

  			      struct TCP_Server_Info *server,

  			      const int flags, const int num_rqst,
  			      struct smb_rqst *rqst, int *resp_buf_type,
  			      struct kvec *resp_iov);

  extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,

  			struct smb_hdr * /* input */ ,
  			struct smb_hdr * /* out */ ,

  			int * /* bytes returned */ , const int);

  extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,

  			    char *in_buf, int flags);

  extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,

  				struct TCP_Server_Info *,

  				struct smb_rqst *);
  extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
  						struct smb_rqst *);

  extern int cifs_check_receive(struct mid_q_entry *mid,
  			struct TCP_Server_Info *server, bool log_error);

  extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
  				 unsigned int size, unsigned int *num,

  				 struct cifs_credits *credits);

  extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,

  			struct kvec *, int /* nvec to send */,

  			int * /* type of buf returned */, const int flags,
  			struct kvec * /* resp vec */);

  extern int SendReceiveBlockingLock(const unsigned int xid,

  			struct cifs_tcon *ptcon,

  			struct smb_hdr *in_buf ,
  			struct smb_hdr *out_buf,
  			int *bytes_returned);

  extern int cifs_reconnect(struct TCP_Server_Info *server);

  extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);

  extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);

  extern bool backup_cred(struct cifs_sb_info *);

  extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);

  extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
  			    unsigned int bytes_written);

  extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);

  extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,

  				  int flags,

  				  struct cifsFileInfo **ret_file);

  extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,

  				  int flags,

  				  struct cifsFileInfo **ret_file);

  extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);

  extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
  				  struct cifsFileInfo **ret_file);

  extern unsigned int smbCalcSize(void *buf, struct TCP_Server_Info *server);

  extern int decode_negTokenInit(unsigned char *security_blob, int length,

  			struct TCP_Server_Info *server);

  extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);

  extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);

  extern int map_smb_to_linux_error(char *buf, bool logErr);

  extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);

  extern void header_assemble(struct smb_hdr *, char /* command */ ,

  			    const struct cifs_tcon *, int /* length of

  			    fixed section (word count) in two byte units */);

  extern int small_smb_init_no_tc(const int smb_cmd, const int wct,

  				struct cifs_ses *ses,

  				void **request_buf);

  extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
  				enum securityEnum requested);

  extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
  			  const struct nls_table *nls_cp);

  extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
  extern u64 cifs_UnixTimeToNT(struct timespec64);
  extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,

  				      int offset);

  extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);

  extern int cifs_get_writer(struct cifsInodeInfo *cinode);
  extern void cifs_put_writer(struct cifsInodeInfo *cinode);
  extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);

  extern int cifs_unlock_range(struct cifsFileInfo *cfile,
  			     struct file_lock *flock, const unsigned int xid);
  extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);

  extern void cifs_down_write(struct rw_semaphore *sem);

  extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
  					      struct file *file,
  					      struct tcon_link *tlink,
  					      __u32 oplock);

  extern int cifs_posix_open(char *full_path, struct inode **inode,
  			   struct super_block *sb, int mode,
  			   unsigned int f_flags, __u32 *oplock, __u16 *netfid,
  			   unsigned int xid);

  void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);

  extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
  				     FILE_UNIX_BASIC_INFO *info,
  				     struct cifs_sb_info *cifs_sb);

  extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
  					struct cifs_sb_info *);

  extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);

  extern struct inode *cifs_iget(struct super_block *sb,
  			       struct cifs_fattr *fattr);

  extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
  			       FILE_ALL_INFO *data, struct super_block *sb,

  			       int xid, const struct cifs_fid *fid);

  extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
  			struct super_block *sb, unsigned int xid);

  extern int cifs_get_inode_info_unix(struct inode **pinode,
  			const unsigned char *search_path,

  			struct super_block *sb, unsigned int xid);

  extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
  			      unsigned int xid, char *full_path, __u32 dosattr);
  extern int cifs_rename_pending_delete(const char *full_path,
  				      struct dentry *dentry,
  				      const unsigned int xid);

  extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
  				struct cifs_fattr *fattr, uint sidtype);

  extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,

  			      struct cifs_fattr *fattr, struct inode *inode,

  			      bool get_mode_from_special_sid,

  			      const char *path, const struct cifs_fid *pfid);

  extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,

  					kuid_t, kgid_t);

  extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
  					const char *, u32 *);

  extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
  						const struct cifs_fid *, u32 *);

  extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,

  				const char *, int);

  extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);

  extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);

  extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);

  extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
  extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,

  			         unsigned int to_read);
  extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,

  					struct page *page,
  					unsigned int page_offset,
  					unsigned int to_read);

  extern int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,

  			       struct cifs_sb_info *cifs_sb);
  extern int cifs_match_super(struct super_block *, void *);

  extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);

  extern struct smb_vol *cifs_get_volume_info(char *mount_data,

  					    const char *devname, bool is_smb3);

  extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol);

  extern void cifs_umount(struct cifs_sb_info *);

  extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);

  extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);

  extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,

  				    __u64 length, __u8 type, __u16 flags,

  				    struct cifsLockInfo **conf_lock,

  				    int rw_check);

  extern void cifs_add_pending_open(struct cifs_fid *fid,
  				  struct tcon_link *tlink,
  				  struct cifs_pending_open *open);
  extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
  					 struct tcon_link *tlink,
  					 struct cifs_pending_open *open);
  extern void cifs_del_pending_open(struct cifs_pending_open *open);

  extern struct TCP_Server_Info *cifs_get_tcp_session(struct smb_vol *vol);

  extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
  				 int from_reconnect);
  extern void cifs_put_tcon(struct cifs_tcon *tcon);

  
  #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)

  extern void cifs_dfs_release_automount_timer(void);

  #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
  #define cifs_dfs_release_automount_timer()	do { } while (0)
  #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */

  void cifs_proc_init(void);
  void cifs_proc_clean(void);

  extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
  extern void cifs_free_llist(struct list_head *llist);
  extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);

  extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
  			     const struct nls_table *nlsc);

  extern int cifs_negotiate_protocol(const unsigned int xid,
  				   struct cifs_ses *ses);

  extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
  			      struct nls_table *nls_info);

  extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);

  extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);

  extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
  		    const char *tree, struct cifs_tcon *tcon,
  		    const struct nls_table *);

  extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,

  		const char *searchName, struct cifs_sb_info *cifs_sb,

  		__u16 *searchHandle, __u16 search_flags,
  		struct cifs_search_info *psrch_inf,

  		bool msearch);

  extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,

  		__u16 searchHandle, __u16 search_flags,
  		struct cifs_search_info *psrch_inf);

  extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,

  			const __u16 search_handle);

  extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			u16 netfid, FILE_ALL_INFO *pFindData);

  extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			    const char *search_Name, FILE_ALL_INFO *data,
  			    int legacy /* whether to use old info level */,
  			    const struct nls_table *nls_codepage, int remap);

  extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,

  			       const char *search_name, FILE_ALL_INFO *data,
  			       const struct nls_table *nls_codepage, int remap);

  extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);

  extern int CIFSSMBUnixQPathInfo(const unsigned int xid,

  			struct cifs_tcon *tcon,

  			const unsigned char *searchName,

  			FILE_UNIX_BASIC_INFO *pFindData,

  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,

  			   const char *search_name,
  			   struct dfs_info3_param **target_nodes,
  			   unsigned int *num_of_nodes,
  			   const struct nls_table *nls_codepage, int remap);

  extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
  			       unsigned int *num_of_nodes,
  			       struct dfs_info3_param **target_nodes,
  			       const struct nls_table *nls_codepage, int remap,
  			       const char *searchName, bool is_unicode);

  extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,

  				 struct cifs_sb_info *cifs_sb,
  				 struct smb_vol *vol);

  extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			struct kstatfs *FSData);

  extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			struct kstatfs *FSData);

  extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			__u64 cap);

  extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,

  			struct cifs_tcon *tcon);

  extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
  extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
  extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			struct kstatfs *FSData);

  extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			const char *fileName, const FILE_BASIC_INFO *data,

  			const struct nls_table *nls_codepage,

  			struct cifs_sb_info *cifs_sb);

  extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,

  			const FILE_BASIC_INFO *data, __u16 fid,
  			__u32 pid_of_opener);

  extern int CIFSSMBSetFileDisposition(const unsigned int xid,
  				     struct cifs_tcon *tcon,
  				     bool delete_file, __u16 fid,
  				     __u32 pid_of_opener);

  #if 0

  extern int CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon,

  			char *fileName, __u16 dos_attributes,
  			const struct nls_table *nls_codepage);
  #endif /* possibly unneeded function */

  extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,

  			 const char *file_name, __u64 size,
  			 struct cifs_sb_info *cifs_sb, bool set_allocation);

  extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,

  			      struct cifsFileInfo *cfile, __u64 size,
  			      bool set_allocation);

  
  struct cifs_unix_set_info_args {
  	__u64	ctime;
  	__u64	atime;
  	__u64	mtime;
  	__u64	mode;

  	kuid_t	uid;
  	kgid_t	gid;

  	dev_t	device;
  };

  extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
  				  struct cifs_tcon *tcon,

  				  const struct cifs_unix_set_info_args *args,
  				  u16 fid, u32 pid_of_opener);

  extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,

  				  struct cifs_tcon *tcon, const char *file_name,

  				  const struct cifs_unix_set_info_args *args,
  				  const struct nls_table *nls_codepage,

  				  int remap);

  extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
  			umode_t mode, struct cifs_tcon *tcon,

  			const char *name, struct cifs_sb_info *cifs_sb);

  extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,

  			const char *name, struct cifs_sb_info *cifs_sb);

  extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,

  			const char *name, __u16 type,
  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,

  			  const char *name, struct cifs_sb_info *cifs_sb);

  extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,

  			 const char *from_name, const char *to_name,
  			 struct cifs_sb_info *cifs_sb);

  extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
  				 int netfid, const char *target_name,
  				 const struct nls_table *nls_codepage,
  				 int remap_special_chars);

  extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
  			      const char *from_name, const char *to_name,
  			      struct cifs_sb_info *cifs_sb);

  extern int CIFSUnixCreateHardLink(const unsigned int xid,

  			struct cifs_tcon *tcon,

  			const char *fromName, const char *toName,

  			const struct nls_table *nls_codepage,

  			int remap_special_chars);

  extern int CIFSUnixCreateSymLink(const unsigned int xid,

  			struct cifs_tcon *tcon,

  			const char *fromName, const char *toName,

  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,

  			struct cifs_tcon *tcon,

  			const unsigned char *searchName, char **syminfo,

  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
  			       __u16 fid, char **symlinkinfo,
  			       const struct nls_table *nls_codepage);

  extern int CIFSSMB_set_compression(const unsigned int xid,
  				   struct cifs_tcon *tcon, __u16 fid);

  extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
  		     int *oplock, FILE_ALL_INFO *buf);

  extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,

  			const char *fileName, const int disposition,
  			const int access_flags, const int omode,

  			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,

  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,

  			u32 posix_flags, __u64 mode, __u16 *netfid,

  			FILE_UNIX_BASIC_INFO *pRetData,
  			__u32 *pOplock, const char *name,

  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,

  			const int smb_file_id);

  extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,

  			const int smb_file_id);

  extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,

  			unsigned int *nbytes, char **buf,

  			int *return_buf_type);

  extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,

  			unsigned int *nbytes, const char *buf);

  extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,

  			unsigned int *nbytes, struct kvec *iov, const int nvec);

  extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,

  				 const char *search_name, __u64 *inode_number,
  				 const struct nls_table *nls_codepage,
  				 int remap);

  extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
  		      const __u16 netfid, const __u8 lock_type,
  		      const __u32 num_unlock, const __u32 num_lock,
  		      LOCKING_ANDX_RANGE *buf);
  extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,

  			const __u16 netfid, const __u32 netpid, const __u64 len,

  			const __u64 offset, const __u32 numUnlock,
  			const __u32 numLock, const __u8 lockType,

  			const bool waitFlag, const __u8 oplock_level);

  extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,

  			const __u16 smb_file_id, const __u32 netpid,

  			const loff_t start_offset, const __u64 len,
  			struct file_lock *, const __u16 lock_type,
  			const bool waitFlag);

  extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);

  extern int CIFSSMBEcho(struct TCP_Server_Info *server);

  extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);

  extern struct cifs_ses *sesInfoAlloc(void);
  extern void sesInfoFree(struct cifs_ses *);
  extern struct cifs_tcon *tconInfoAlloc(void);
  extern void tconInfoFree(struct cifs_tcon *);

  extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
  		   __u32 *pexpected_response_sequence_number);

  extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,

  			  __u32 *);

  extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
  extern int cifs_verify_signature(struct smb_rqst *rqst,

  				 struct TCP_Server_Info *server,

  				__u32 expected_sequence_number);

  extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
  			const struct nls_table *);
  extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);

  extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);

  extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);

  extern int calc_seckey(struct cifs_ses *);

  extern int generate_smb30signingkey(struct cifs_ses *);
  extern int generate_smb311signingkey(struct cifs_ses *);

  #ifdef CONFIG_CIFS_WEAK_PW_HASH

  extern int calc_lanman_hash(const char *password, const char *cryptkey,

  				bool encrypt, char *lnm_session_key);

  #endif /* CIFS_WEAK_PW_HASH */

  #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */

  extern int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,

  			const int notify_subdirs, const __u16 netfid,
  			__u32 filter, struct file *file, int multishot,
  			const struct nls_table *nls_codepage);
  #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */

  extern int CIFSSMBCopy(unsigned int xid,

  			struct cifs_tcon *source_tcon,

  			const char *fromName,
  			const __u16 target_tid,
  			const char *toName, const int flags,

  			const struct nls_table *nls_codepage,

  			int remap_special_chars);

  extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,

  			const unsigned char *searchName,
  			const unsigned char *ea_name, char *EAData,

  			size_t bufsize, struct cifs_sb_info *cifs_sb);

  extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,

  		const char *fileName, const char *ea_name,
  		const void *ea_value, const __u16 ea_value_len,

  		const struct nls_table *nls_codepage,
  		struct cifs_sb_info *cifs_sb);

  extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,

  			__u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);

  extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,

  			struct cifs_ntsd *, __u32, int);

  extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,

  		const unsigned char *searchName,

  		char *acl_inf, const int buflen, const int acl_type,

  		const struct nls_table *nls_codepage, int remap_special_chars);

  extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,

  		const unsigned char *fileName,
  		const char *local_acl, const int buflen, const int acl_type,

  		const struct nls_table *nls_codepage, int remap_special_chars);

  extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,

  			const int netfid, __u64 *pExtAttrBits, __u64 *pMask);

  extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);

  extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
  extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,

  			      struct cifs_sb_info *cifs_sb,
  			      struct cifs_fattr *fattr,
  			      const unsigned char *path);

  extern int mdfour(unsigned char *, unsigned char *, int);

  extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
  			const struct nls_table *codepage);

  extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,

  			unsigned char *p24);

  
  extern int
  cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
  		       const char *devname, bool is_smb3);

  extern void
  cifs_cleanup_volume_info_contents(struct smb_vol *volume_info);

  extern struct TCP_Server_Info *
  cifs_find_tcp_session(struct smb_vol *vol);

  extern void cifs_put_smb_ses(struct cifs_ses *ses);
  
  extern struct cifs_ses *
  cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info);

  void cifs_readdata_release(struct kref *refcount);

  int cifs_async_readv(struct cifs_readdata *rdata);

  int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);

  int cifs_async_writev(struct cifs_writedata *wdata,
  		      void (*release)(struct kref *kref));

  void cifs_writev_complete(struct work_struct *work);
  struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
  						work_func_t complete);

  struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
  						work_func_t complete);

  void cifs_writedata_release(struct kref *refcount);

  int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
  			  struct cifs_sb_info *cifs_sb,
  			  const unsigned char *path, char *pbuf,
  			  unsigned int *pbytes_read);

  int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
  			   struct cifs_sb_info *cifs_sb,
  			   const unsigned char *path, char *pbuf,
  			   unsigned int *pbytes_written);

  int __cifs_calc_signature(struct smb_rqst *rqst,

  			struct TCP_Server_Info *server, char *signature,
  			struct shash_desc *shash);

  enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
  					enum securityEnum);

  struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
  void cifs_aio_ctx_release(struct kref *refcount);
  int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);

  void smb2_cached_lease_break(struct work_struct *work);

  
  int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
  		    struct sdesc **sdesc);
  void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);

  extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
  				unsigned int *len, unsigned int *offset);

  struct cifs_chan *
  cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);

  int cifs_try_adding_channels(struct cifs_ses *ses);
  int cifs_ses_add_channel(struct cifs_ses *ses,
  				struct cifs_server_iface *iface);
  bool is_server_using_iface(struct TCP_Server_Info *server,
  			   struct cifs_server_iface *iface);
  bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);

  void extract_unc_hostname(const char *unc, const char **h, size_t *len);

  int copy_path_name(char *dst, const char *src);

  int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
  			       int resp_buftype,
  			       struct cifs_search_info *srch_inf);

  struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
  void cifs_put_tcp_super(struct super_block *sb);

  int update_super_prepath(struct cifs_tcon *tcon, char *prefix);

  #ifdef CONFIG_CIFS_DFS_UPCALL
  static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
  			       const char *old_path,
  			       const struct nls_table *nls_codepage,
  			       struct dfs_info3_param *referral, int remap)
  {
  	return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
  			      referral, NULL);
  }

  
  int match_target_ip(struct TCP_Server_Info *server,
  		    const char *share, size_t share_len,
  		    bool *result);

  #endif

  static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
  {

  	if (cifs_sb && (backup_cred(cifs_sb)))

  		return options | CREATE_OPEN_BACKUP_INTENT;
  	else
  		return options;
  }

  #endif			/* _CIFSPROTO_H */