internal.h 3.6 KB

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  1. /* fs/ internal definitions
  2. *
  3. * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
  4. * Written by David Howells (dhowells@redhat.com)
  5. *
  6. * This program is free software; you can redistribute it and/or
  7. * modify it under the terms of the GNU General Public License
  8. * as published by the Free Software Foundation; either version
  9. * 2 of the License, or (at your option) any later version.
  10. */
  11. struct super_block;
  12. struct file_system_type;
  13. struct linux_binprm;
  14. struct path;
  15. struct mount;
  16. /*
  17. * block_dev.c
  18. */
  19. #ifdef CONFIG_BLOCK
  20. extern void __init bdev_cache_init(void);
  21. extern int __sync_blockdev(struct block_device *bdev, int wait);
  22. #else
  23. static inline void bdev_cache_init(void)
  24. {
  25. }
  26. static inline int __sync_blockdev(struct block_device *bdev, int wait)
  27. {
  28. return 0;
  29. }
  30. #endif
  31. /*
  32. * char_dev.c
  33. */
  34. extern void __init chrdev_init(void);
  35. /*
  36. * namei.c
  37. */
  38. extern int __inode_permission(struct inode *, int);
  39. extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
  40. extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
  41. const char *, unsigned int, struct path *);
  42. /*
  43. * namespace.c
  44. */
  45. extern int copy_mount_options(const void __user *, unsigned long *);
  46. extern int copy_mount_string(const void __user *, char **);
  47. extern struct vfsmount *lookup_mnt(struct path *);
  48. extern int finish_automount(struct vfsmount *, struct path *);
  49. extern int sb_prepare_remount_readonly(struct super_block *);
  50. extern void __init mnt_init(void);
  51. extern int __mnt_want_write(struct vfsmount *);
  52. extern int __mnt_want_write_file(struct file *);
  53. extern void __mnt_drop_write(struct vfsmount *);
  54. extern void __mnt_drop_write_file(struct file *);
  55. /*
  56. * fs_struct.c
  57. */
  58. extern void chroot_fs_refs(const struct path *, const struct path *);
  59. /*
  60. * file_table.c
  61. */
  62. extern struct file *get_empty_filp(void);
  63. /*
  64. * super.c
  65. */
  66. extern int do_remount_sb(struct super_block *, int, void *, int);
  67. extern bool grab_super_passive(struct super_block *sb);
  68. extern struct dentry *mount_fs(struct file_system_type *,
  69. int, const char *, void *);
  70. extern struct super_block *user_get_super(dev_t);
  71. /*
  72. * open.c
  73. */
  74. struct open_flags {
  75. int open_flag;
  76. umode_t mode;
  77. int acc_mode;
  78. int intent;
  79. int lookup_flags;
  80. };
  81. extern struct file *do_filp_open(int dfd, struct filename *pathname,
  82. const struct open_flags *op);
  83. extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
  84. const char *, const struct open_flags *);
  85. extern long do_handle_open(int mountdirfd,
  86. struct file_handle __user *ufh, int open_flag);
  87. extern int open_check_o_direct(struct file *f);
  88. /*
  89. * inode.c
  90. */
  91. extern spinlock_t inode_sb_list_lock;
  92. extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan,
  93. int nid);
  94. extern void inode_add_lru(struct inode *inode);
  95. /*
  96. * fs-writeback.c
  97. */
  98. extern void inode_wb_list_del(struct inode *inode);
  99. extern long get_nr_dirty_inodes(void);
  100. extern void evict_inodes(struct super_block *);
  101. extern int invalidate_inodes(struct super_block *, bool);
  102. /*
  103. * dcache.c
  104. */
  105. extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
  106. extern int d_set_mounted(struct dentry *dentry);
  107. extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,
  108. int nid);
  109. /*
  110. * read_write.c
  111. */
  112. extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
  113. extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
  114. /*
  115. * splice.c
  116. */
  117. extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
  118. loff_t *opos, size_t len, unsigned int flags);
  119. /*
  120. * pipe.c
  121. */
  122. extern const struct file_operations pipefifo_fops;