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/* SPDX-License-Identifier: LGPL-2.1 */
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/*
*
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* Copyright ( c ) International Business Machines Corp . , 2002 , 2007
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* Author ( s ) : Steve French ( sfrench @ us . ibm . com )
*
*/
# ifndef _CIFSFS_H
# define _CIFSFS_H
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# include <linux/hash.h>
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# define ROOT_I 2
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/*
* ino_t is 32 - bits on 32 - bit arch . We have to squash the 64 - bit value down
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* so that it will fit . We use hash_64 to convert the value to 31 bits , and
* then add 1 , to ensure that we don ' t end up with a 0 as the value .
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*/
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static inline ino_t
cifs_uniqueid_to_ino_t ( u64 fileid )
{
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if ( ( sizeof ( ino_t ) ) < ( sizeof ( u64 ) ) )
return ( ino_t ) hash_64 ( fileid , ( sizeof ( ino_t ) * 8 ) - 1 ) + 1 ;
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return ( ino_t ) fileid ;
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}
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static inline void cifs_set_time ( struct dentry * dentry , unsigned long time )
{
dentry - > d_fsdata = ( void * ) time ;
}
static inline unsigned long cifs_get_time ( struct dentry * dentry )
{
return ( unsigned long ) dentry - > d_fsdata ;
}
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extern struct file_system_type cifs_fs_type , smb3_fs_type ;
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extern const struct address_space_operations cifs_addr_ops ;
extern const struct address_space_operations cifs_addr_ops_smallbuf ;
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/* Functions related to super block operations */
extern void cifs_sb_active ( struct super_block * sb ) ;
extern void cifs_sb_deactive ( struct super_block * sb ) ;
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/* Functions related to inodes */
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extern const struct inode_operations cifs_dir_inode_ops ;
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extern struct inode * cifs_root_iget ( struct super_block * ) ;
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extern int cifs_create ( struct user_namespace * , struct inode * ,
struct dentry * , umode_t , bool excl ) ;
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extern int cifs_atomic_open ( struct inode * , struct dentry * ,
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struct file * , unsigned , umode_t ) ;
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extern struct dentry * cifs_lookup ( struct inode * , struct dentry * ,
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unsigned int ) ;
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extern int cifs_unlink ( struct inode * dir , struct dentry * dentry ) ;
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extern int cifs_hardlink ( struct dentry * , struct inode * , struct dentry * ) ;
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extern int cifs_mknod ( struct user_namespace * , struct inode * , struct dentry * ,
umode_t , dev_t ) ;
extern int cifs_mkdir ( struct user_namespace * , struct inode * , struct dentry * ,
umode_t ) ;
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extern int cifs_rmdir ( struct inode * , struct dentry * ) ;
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extern int cifs_rename2 ( struct user_namespace * , struct inode * ,
struct dentry * , struct inode * , struct dentry * ,
unsigned int ) ;
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extern int cifs_revalidate_file_attr ( struct file * filp ) ;
extern int cifs_revalidate_dentry_attr ( struct dentry * ) ;
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extern int cifs_revalidate_file ( struct file * filp ) ;
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extern int cifs_revalidate_dentry ( struct dentry * ) ;
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extern int cifs_invalidate_mapping ( struct inode * inode ) ;
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extern int cifs_revalidate_mapping ( struct inode * inode ) ;
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extern int cifs_zap_mapping ( struct inode * inode ) ;
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extern int cifs_getattr ( struct user_namespace * , const struct path * ,
struct kstat * , u32 , unsigned int ) ;
extern int cifs_setattr ( struct user_namespace * , struct dentry * ,
struct iattr * ) ;
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extern int cifs_fiemap ( struct inode * , struct fiemap_extent_info * , u64 start ,
u64 len ) ;
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extern const struct inode_operations cifs_file_inode_ops ;
extern const struct inode_operations cifs_symlink_inode_ops ;
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extern const struct inode_operations cifs_dfs_referral_inode_operations ;
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/* Functions related to files and directories */
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extern const struct file_operations cifs_file_ops ;
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extern const struct file_operations cifs_file_direct_ops ; /* if directio mnt */
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extern const struct file_operations cifs_file_strict_ops ; /* if strictio mnt */
extern const struct file_operations cifs_file_nobrl_ops ; /* no brlocks */
extern const struct file_operations cifs_file_direct_nobrl_ops ;
extern const struct file_operations cifs_file_strict_nobrl_ops ;
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extern int cifs_open ( struct inode * inode , struct file * file ) ;
extern int cifs_close ( struct inode * inode , struct file * file ) ;
extern int cifs_closedir ( struct inode * inode , struct file * file ) ;
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extern ssize_t cifs_user_readv ( struct kiocb * iocb , struct iov_iter * to ) ;
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extern ssize_t cifs_direct_readv ( struct kiocb * iocb , struct iov_iter * to ) ;
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extern ssize_t cifs_strict_readv ( struct kiocb * iocb , struct iov_iter * to ) ;
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extern ssize_t cifs_user_writev ( struct kiocb * iocb , struct iov_iter * from ) ;
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extern ssize_t cifs_direct_writev ( struct kiocb * iocb , struct iov_iter * from ) ;
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extern ssize_t cifs_strict_writev ( struct kiocb * iocb , struct iov_iter * from ) ;
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extern int cifs_flock ( struct file * pfile , int cmd , struct file_lock * plock ) ;
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extern int cifs_lock ( struct file * , int , struct file_lock * ) ;
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extern int cifs_fsync ( struct file * , loff_t , loff_t , int ) ;
extern int cifs_strict_fsync ( struct file * , loff_t , loff_t , int ) ;
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extern int cifs_flush ( struct file * , fl_owner_t id ) ;
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extern int cifs_file_mmap ( struct file * , struct vm_area_struct * ) ;
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extern int cifs_file_strict_mmap ( struct file * , struct vm_area_struct * ) ;
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extern const struct file_operations cifs_dir_ops ;
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extern int cifs_dir_open ( struct inode * inode , struct file * file ) ;
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extern int cifs_readdir ( struct file * file , struct dir_context * ctx ) ;
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/* Functions related to dir entries */
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extern const struct dentry_operations cifs_dentry_ops ;
extern const struct dentry_operations cifs_ci_dentry_ops ;
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# ifdef CONFIG_CIFS_DFS_UPCALL
extern struct vfsmount * cifs_dfs_d_automount ( struct path * path ) ;
# else
# define cifs_dfs_d_automount NULL
# endif
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/* Functions related to symlinks */
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extern const char * cifs_get_link ( struct dentry * , struct inode * ,
struct delayed_call * ) ;
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extern int cifs_symlink ( struct user_namespace * mnt_userns , struct inode * inode ,
struct dentry * direntry , const char * symname ) ;
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# ifdef CONFIG_CIFS_XATTR
extern const struct xattr_handler * cifs_xattr_handlers [ ] ;
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extern ssize_t cifs_listxattr ( struct dentry * , char * , size_t ) ;
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# else
# define cifs_xattr_handlers NULL
# define cifs_listxattr NULL
# endif
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extern ssize_t cifs_file_copychunk_range ( unsigned int xid ,
struct file * src_file , loff_t off ,
struct file * dst_file , loff_t destoff ,
size_t len , unsigned int flags ) ;
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extern long cifs_ioctl ( struct file * filep , unsigned int cmd , unsigned long arg ) ;
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extern void cifs_setsize ( struct inode * inode , loff_t offset ) ;
extern int cifs_truncate_page ( struct address_space * mapping , loff_t from ) ;
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struct smb3_fs_context ;
extern struct dentry * cifs_smb3_do_mount ( struct file_system_type * fs_type ,
int flags , struct smb3_fs_context * ctx ) ;
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# ifdef CONFIG_CIFS_NFSD_EXPORT
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extern const struct export_operations cifs_export_ops ;
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# endif /* CONFIG_CIFS_NFSD_EXPORT */
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/* when changing internal version - update following two lines at same time */
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# define SMB3_PRODUCT_BUILD 40
# define CIFS_VERSION "2.40"
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# endif /* _CIFSFS_H */