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TOMOYO Linux Cross Reference
Linux/fs/cifs/cifsfs.h

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  1 /*
  2  *   fs/cifs/cifsfs.h
  3  *
  4  *   Copyright (c) International Business Machines  Corp., 2002, 2007
  5  *   Author(s): Steve French (sfrench@us.ibm.com)
  6  *
  7  *   This library is free software; you can redistribute it and/or modify
  8  *   it under the terms of the GNU Lesser General Public License as published
  9  *   by the Free Software Foundation; either version 2.1 of the License, or
 10  *   (at your option) any later version.
 11  *
 12  *   This library is distributed in the hope that it will be useful,
 13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 15  *   the GNU Lesser General Public License for more details.
 16  *
 17  *   You should have received a copy of the GNU Lesser General Public License
 18  *   along with this library; if not, write to the Free Software
 19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 20  */
 21 
 22 #ifndef _CIFSFS_H
 23 #define _CIFSFS_H
 24 
 25 #include <linux/hash.h>
 26 
 27 #define ROOT_I 2
 28 
 29 /*
 30  * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
 31  * so that it will fit. We use hash_64 to convert the value to 31 bits, and
 32  * then add 1, to ensure that we don't end up with a 0 as the value.
 33  */
 34 static inline ino_t
 35 cifs_uniqueid_to_ino_t(u64 fileid)
 36 {
 37         if ((sizeof(ino_t)) < (sizeof(u64)))
 38                 return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;
 39 
 40         return (ino_t)fileid;
 41 
 42 }
 43 
 44 extern struct file_system_type cifs_fs_type;
 45 extern const struct address_space_operations cifs_addr_ops;
 46 extern const struct address_space_operations cifs_addr_ops_smallbuf;
 47 
 48 /* Functions related to super block operations */
 49 extern void cifs_sb_active(struct super_block *sb);
 50 extern void cifs_sb_deactive(struct super_block *sb);
 51 
 52 /* Functions related to inodes */
 53 extern const struct inode_operations cifs_dir_inode_ops;
 54 extern struct inode *cifs_root_iget(struct super_block *);
 55 extern int cifs_create(struct inode *, struct dentry *, umode_t,
 56                        bool excl);
 57 extern int cifs_atomic_open(struct inode *, struct dentry *,
 58                             struct file *, unsigned, umode_t,
 59                             int *);
 60 extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
 61                                   unsigned int);
 62 extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
 63 extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
 64 extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
 65 extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
 66 extern int cifs_rmdir(struct inode *, struct dentry *);
 67 extern int cifs_rename2(struct inode *, struct dentry *, struct inode *,
 68                         struct dentry *, unsigned int);
 69 extern int cifs_revalidate_file_attr(struct file *filp);
 70 extern int cifs_revalidate_dentry_attr(struct dentry *);
 71 extern int cifs_revalidate_file(struct file *filp);
 72 extern int cifs_revalidate_dentry(struct dentry *);
 73 extern int cifs_invalidate_mapping(struct inode *inode);
 74 extern int cifs_revalidate_mapping(struct inode *inode);
 75 extern int cifs_zap_mapping(struct inode *inode);
 76 extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 77 extern int cifs_setattr(struct dentry *, struct iattr *);
 78 
 79 extern const struct inode_operations cifs_file_inode_ops;
 80 extern const struct inode_operations cifs_symlink_inode_ops;
 81 extern const struct inode_operations cifs_dfs_referral_inode_operations;
 82 
 83 
 84 /* Functions related to files and directories */
 85 extern const struct file_operations cifs_file_ops;
 86 extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
 87 extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
 88 extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
 89 extern const struct file_operations cifs_file_direct_nobrl_ops;
 90 extern const struct file_operations cifs_file_strict_nobrl_ops;
 91 extern int cifs_open(struct inode *inode, struct file *file);
 92 extern int cifs_close(struct inode *inode, struct file *file);
 93 extern int cifs_closedir(struct inode *inode, struct file *file);
 94 extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to);
 95 extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);
 96 extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
 97 extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
 98 extern int cifs_lock(struct file *, int, struct file_lock *);
 99 extern int cifs_fsync(struct file *, loff_t, loff_t, int);
100 extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
101 extern int cifs_flush(struct file *, fl_owner_t id);
102 extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
103 extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
104 extern const struct file_operations cifs_dir_ops;
105 extern int cifs_dir_open(struct inode *inode, struct file *file);
106 extern int cifs_readdir(struct file *file, struct dir_context *ctx);
107 
108 /* Functions related to dir entries */
109 extern const struct dentry_operations cifs_dentry_ops;
110 extern const struct dentry_operations cifs_ci_dentry_ops;
111 
112 #ifdef CONFIG_CIFS_DFS_UPCALL
113 extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
114 #else
115 #define cifs_dfs_d_automount NULL
116 #endif
117 
118 /* Functions related to symlinks */
119 extern const char *cifs_get_link(struct dentry *, struct inode *,
120                         struct delayed_call *);
121 extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
122                         const char *symname);
123 extern int      cifs_removexattr(struct dentry *, const char *);
124 extern int      cifs_setxattr(struct dentry *, const char *, const void *,
125                         size_t, int);
126 extern ssize_t  cifs_getxattr(struct dentry *, const char *, void *, size_t);
127 extern ssize_t  cifs_listxattr(struct dentry *, char *, size_t);
128 extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
129 #ifdef CONFIG_CIFS_NFSD_EXPORT
130 extern const struct export_operations cifs_export_ops;
131 #endif /* CONFIG_CIFS_NFSD_EXPORT */
132 
133 #define CIFS_VERSION   "2.08"
134 #endif                          /* _CIFSFS_H */
135 

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