cifsfs.h 6.6 KB

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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. #ifndef _CIFSFS_H
  22. #define _CIFSFS_H
  23. #include <linux/hash.h>
  24. #define ROOT_I 2
  25. /*
  26. * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
  27. * so that it will fit. We use hash_64 to convert the value to 31 bits, and
  28. * then add 1, to ensure that we don't end up with a 0 as the value.
  29. */
  30. static inline ino_t
  31. cifs_uniqueid_to_ino_t(u64 fileid)
  32. {
  33. if ((sizeof(ino_t)) < (sizeof(u64)))
  34. return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;
  35. return (ino_t)fileid;
  36. }
  37. static inline void cifs_set_time(struct dentry *dentry, unsigned long time)
  38. {
  39. dentry->d_fsdata = (void *) time;
  40. }
  41. static inline unsigned long cifs_get_time(struct dentry *dentry)
  42. {
  43. return (unsigned long) dentry->d_fsdata;
  44. }
  45. extern struct file_system_type cifs_fs_type;
  46. extern const struct address_space_operations cifs_addr_ops;
  47. extern const struct address_space_operations cifs_addr_ops_smallbuf;
  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. /* Functions related to inodes */
  52. extern const struct inode_operations cifs_dir_inode_ops;
  53. extern struct inode *cifs_root_iget(struct super_block *);
  54. extern int cifs_create(struct inode *, struct dentry *, umode_t,
  55. bool excl);
  56. extern int cifs_atomic_open(struct inode *, struct dentry *,
  57. struct file *, unsigned, umode_t);
  58. extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
  59. unsigned int);
  60. extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
  61. extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
  62. extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
  63. extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
  64. extern int cifs_rmdir(struct inode *, struct dentry *);
  65. extern int cifs_rename2(struct inode *, struct dentry *, struct inode *,
  66. struct dentry *, unsigned int);
  67. extern int cifs_revalidate_file_attr(struct file *filp);
  68. extern int cifs_revalidate_dentry_attr(struct dentry *);
  69. extern int cifs_revalidate_file(struct file *filp);
  70. extern int cifs_revalidate_dentry(struct dentry *);
  71. extern int cifs_invalidate_mapping(struct inode *inode);
  72. extern int cifs_revalidate_mapping(struct inode *inode);
  73. extern int cifs_zap_mapping(struct inode *inode);
  74. extern int cifs_getattr(const struct path *, struct kstat *, u32, unsigned int);
  75. extern int cifs_setattr(struct dentry *, struct iattr *);
  76. extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start,
  77. u64 len);
  78. extern const struct inode_operations cifs_file_inode_ops;
  79. extern const struct inode_operations cifs_symlink_inode_ops;
  80. extern const struct inode_operations cifs_dfs_referral_inode_operations;
  81. /* Functions related to files and directories */
  82. extern const struct file_operations cifs_file_ops;
  83. extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
  84. extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
  85. extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
  86. extern const struct file_operations cifs_file_direct_nobrl_ops;
  87. extern const struct file_operations cifs_file_strict_nobrl_ops;
  88. extern int cifs_open(struct inode *inode, struct file *file);
  89. extern int cifs_close(struct inode *inode, struct file *file);
  90. extern int cifs_closedir(struct inode *inode, struct file *file);
  91. extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to);
  92. extern ssize_t cifs_direct_readv(struct kiocb *iocb, struct iov_iter *to);
  93. extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);
  94. extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
  95. extern ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from);
  96. extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
  97. extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock);
  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. /* Functions related to dir entries */
  108. extern const struct dentry_operations cifs_dentry_ops;
  109. extern const struct dentry_operations cifs_ci_dentry_ops;
  110. #ifdef CONFIG_CIFS_DFS_UPCALL
  111. extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
  112. #else
  113. #define cifs_dfs_d_automount NULL
  114. #endif
  115. /* Functions related to symlinks */
  116. extern const char *cifs_get_link(struct dentry *, struct inode *,
  117. struct delayed_call *);
  118. extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
  119. const char *symname);
  120. #ifdef CONFIG_CIFS_XATTR
  121. extern const struct xattr_handler *cifs_xattr_handlers[];
  122. extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
  123. #else
  124. # define cifs_xattr_handlers NULL
  125. # define cifs_listxattr NULL
  126. #endif
  127. extern ssize_t cifs_file_copychunk_range(unsigned int xid,
  128. struct file *src_file, loff_t off,
  129. struct file *dst_file, loff_t destoff,
  130. size_t len, unsigned int flags);
  131. extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
  132. extern void cifs_setsize(struct inode *inode, loff_t offset);
  133. extern int cifs_truncate_page(struct address_space *mapping, loff_t from);
  134. #ifdef CONFIG_CIFS_NFSD_EXPORT
  135. extern const struct export_operations cifs_export_ops;
  136. #endif /* CONFIG_CIFS_NFSD_EXPORT */
  137. #define CIFS_VERSION "2.29"
  138. #endif /* _CIFSFS_H */