David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 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 | |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 12 | struct super_block; |
Al Viro | 9d412a4 | 2011-03-17 22:08:28 -0400 | [diff] [blame] | 13 | struct file_system_type; |
David Howells | a6f76f2 | 2008-11-14 10:39:24 +1100 | [diff] [blame] | 14 | struct linux_binprm; |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 15 | struct path; |
Al Viro | c710536 | 2011-11-24 18:22:03 -0500 | [diff] [blame] | 16 | struct mount; |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 17 | |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 18 | /* |
| 19 | * block_dev.c |
| 20 | */ |
David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 21 | #ifdef CONFIG_BLOCK |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 22 | extern void __init bdev_cache_init(void); |
| 23 | |
Jan Kara | 5cee581 | 2009-04-27 16:43:51 +0200 | [diff] [blame] | 24 | extern int __sync_blockdev(struct block_device *bdev, int wait); |
| 25 | |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 26 | #else |
| 27 | static inline void bdev_cache_init(void) |
| 28 | { |
| 29 | } |
| 30 | |
Jan Kara | 5cee581 | 2009-04-27 16:43:51 +0200 | [diff] [blame] | 31 | static inline int __sync_blockdev(struct block_device *bdev, int wait) |
| 32 | { |
| 33 | return 0; |
| 34 | } |
David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 35 | #endif |
David Howells | 7b0de42 | 2006-08-29 19:06:07 +0100 | [diff] [blame] | 36 | |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 37 | /* |
Akinobu Mita | 4db96b7 | 2014-10-09 15:26:55 -0700 | [diff] [blame] | 38 | * buffer.c |
| 39 | */ |
| 40 | extern void guard_bio_eod(int rw, struct bio *bio); |
| 41 | |
| 42 | /* |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 43 | * char_dev.c |
| 44 | */ |
| 45 | extern void __init chrdev_init(void); |
| 46 | |
| 47 | /* |
David Howells | 0bdaea9 | 2012-06-25 12:55:46 +0100 | [diff] [blame] | 48 | * namei.c |
| 49 | */ |
Al Viro | 197df04 | 2013-09-08 14:03:27 -0400 | [diff] [blame] | 50 | extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *); |
| 51 | extern int vfs_path_lookup(struct dentry *, struct vfsmount *, |
| 52 | const char *, unsigned int, struct path *); |
David Howells | 0bdaea9 | 2012-06-25 12:55:46 +0100 | [diff] [blame] | 53 | |
| 54 | /* |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 55 | * namespace.c |
| 56 | */ |
| 57 | extern int copy_mount_options(const void __user *, unsigned long *); |
Tim Gardner | b8850d1 | 2014-08-28 11:26:03 -0600 | [diff] [blame] | 58 | extern char *copy_mount_string(const void __user *); |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 59 | |
David Howells | 0f60f24 | 2011-03-21 14:28:58 +0000 | [diff] [blame] | 60 | extern struct vfsmount *lookup_mnt(struct path *); |
Al Viro | 19a167a | 2011-01-17 01:35:23 -0500 | [diff] [blame] | 61 | extern int finish_automount(struct vfsmount *, struct path *); |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 62 | |
Miklos Szeredi | 4ed5e82 | 2011-11-21 12:11:31 +0100 | [diff] [blame] | 63 | extern int sb_prepare_remount_readonly(struct super_block *); |
Al Viro | f03c659 | 2011-01-14 22:30:21 -0500 | [diff] [blame] | 64 | |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 65 | extern void __init mnt_init(void); |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 66 | |
Jan Kara | eb04c28 | 2012-06-12 16:20:35 +0200 | [diff] [blame] | 67 | extern int __mnt_want_write(struct vfsmount *); |
| 68 | extern int __mnt_want_write_file(struct file *); |
| 69 | extern void __mnt_drop_write(struct vfsmount *); |
| 70 | extern void __mnt_drop_write_file(struct file *); |
Al Viro | 47cd813 | 2010-02-05 02:01:14 -0500 | [diff] [blame] | 71 | |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 72 | /* |
| 73 | * fs_struct.c |
| 74 | */ |
Al Viro | dcf787f | 2013-03-01 23:51:07 -0500 | [diff] [blame] | 75 | extern void chroot_fs_refs(const struct path *, const struct path *); |
npiggin@suse.de | 864d7c4 | 2009-04-26 20:25:56 +1000 | [diff] [blame] | 76 | |
| 77 | /* |
| 78 | * file_table.c |
| 79 | */ |
Eric Paris | e81e3f4 | 2009-12-04 15:47:36 -0500 | [diff] [blame] | 80 | extern struct file *get_empty_filp(void); |
Al Viro | 62c6943 | 2009-05-07 03:12:29 -0400 | [diff] [blame] | 81 | |
| 82 | /* |
| 83 | * super.c |
| 84 | */ |
| 85 | extern int do_remount_sb(struct super_block *, int, void *, int); |
Dave Chinner | 12ad3ab | 2011-07-08 14:14:41 +1000 | [diff] [blame] | 86 | extern bool grab_super_passive(struct super_block *sb); |
Al Viro | 9d412a4 | 2011-03-17 22:08:28 -0400 | [diff] [blame] | 87 | extern struct dentry *mount_fs(struct file_system_type *, |
| 88 | int, const char *, void *); |
Al Viro | cf31e70 | 2012-01-02 22:28:36 -0500 | [diff] [blame] | 89 | extern struct super_block *user_get_super(dev_t); |
Al Viro | 482928d | 2009-12-19 10:10:39 -0500 | [diff] [blame] | 90 | |
| 91 | /* |
| 92 | * open.c |
| 93 | */ |
Al Viro | 47c805d | 2011-02-23 17:44:09 -0500 | [diff] [blame] | 94 | struct open_flags { |
| 95 | int open_flag; |
Al Viro | a218d0f | 2011-11-21 14:59:34 -0500 | [diff] [blame] | 96 | umode_t mode; |
Al Viro | 47c805d | 2011-02-23 17:44:09 -0500 | [diff] [blame] | 97 | int acc_mode; |
| 98 | int intent; |
Al Viro | f9652e1 | 2013-06-11 08:23:01 +0400 | [diff] [blame] | 99 | int lookup_flags; |
Al Viro | 47c805d | 2011-02-23 17:44:09 -0500 | [diff] [blame] | 100 | }; |
Jeff Layton | 669abf4 | 2012-10-10 16:43:10 -0400 | [diff] [blame] | 101 | extern struct file *do_filp_open(int dfd, struct filename *pathname, |
Al Viro | f9652e1 | 2013-06-11 08:23:01 +0400 | [diff] [blame] | 102 | const struct open_flags *op); |
Al Viro | 73d049a | 2011-03-11 12:08:24 -0500 | [diff] [blame] | 103 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, |
Al Viro | f9652e1 | 2013-06-11 08:23:01 +0400 | [diff] [blame] | 104 | const char *, const struct open_flags *); |
Al Viro | a8dade3 | 2010-10-24 11:13:10 -0400 | [diff] [blame] | 105 | |
Aneesh Kumar K.V | becfd1f | 2011-01-29 18:43:26 +0530 | [diff] [blame] | 106 | extern long do_handle_open(int mountdirfd, |
| 107 | struct file_handle __user *ufh, int open_flag); |
Miklos Szeredi | 90ad1a8 | 2012-05-21 17:30:15 +0200 | [diff] [blame] | 108 | extern int open_check_o_direct(struct file *f); |
Aneesh Kumar K.V | becfd1f | 2011-01-29 18:43:26 +0530 | [diff] [blame] | 109 | |
Al Viro | a8dade3 | 2010-10-24 11:13:10 -0400 | [diff] [blame] | 110 | /* |
| 111 | * inode.c |
| 112 | */ |
Dave Chinner | 55fa609 | 2011-03-22 22:23:40 +1100 | [diff] [blame] | 113 | extern spinlock_t inode_sb_list_lock; |
Dave Chinner | 9b17c62 | 2013-08-28 10:18:05 +1000 | [diff] [blame] | 114 | extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan, |
| 115 | int nid); |
Jan Kara | 4eff96d | 2012-11-26 16:29:51 -0800 | [diff] [blame] | 116 | extern void inode_add_lru(struct inode *inode); |
Dave Chinner | 55fa609 | 2011-03-22 22:23:40 +1100 | [diff] [blame] | 117 | |
Dave Chinner | a66979a | 2011-03-22 22:23:41 +1100 | [diff] [blame] | 118 | /* |
| 119 | * fs-writeback.c |
| 120 | */ |
| 121 | extern void inode_wb_list_del(struct inode *inode); |
| 122 | |
Glauber Costa | 3942c07 | 2013-08-28 10:17:53 +1000 | [diff] [blame] | 123 | extern long get_nr_dirty_inodes(void); |
Al Viro | a4cdbd8 | 2010-10-29 05:49:13 -0400 | [diff] [blame] | 124 | extern void evict_inodes(struct super_block *); |
NeilBrown | 93b270f | 2011-02-24 17:25:47 +1100 | [diff] [blame] | 125 | extern int invalidate_inodes(struct super_block *, bool); |
Al Viro | a4464db | 2011-07-07 15:03:58 -0400 | [diff] [blame] | 126 | |
| 127 | /* |
| 128 | * dcache.c |
| 129 | */ |
| 130 | extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); |
Miklos Szeredi | eed8100 | 2013-09-05 14:39:11 +0200 | [diff] [blame] | 131 | extern int d_set_mounted(struct dentry *dentry); |
Dave Chinner | 9b17c62 | 2013-08-28 10:18:05 +1000 | [diff] [blame] | 132 | extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan, |
| 133 | int nid); |
Al Viro | 06ae43f | 2013-03-20 13:19:30 -0400 | [diff] [blame] | 134 | |
| 135 | /* |
| 136 | * read_write.c |
| 137 | */ |
Al Viro | 68d70d0 | 2013-06-19 15:26:04 +0400 | [diff] [blame] | 138 | extern int rw_verify_area(int, struct file *, const loff_t *, size_t); |
Al Viro | 599a0ac | 2013-03-12 09:58:10 -0400 | [diff] [blame] | 139 | |
| 140 | /* |
| 141 | * pipe.c |
| 142 | */ |
| 143 | extern const struct file_operations pipefifo_fops; |
Al Viro | 8fa1f1c | 2014-05-21 18:22:52 -0400 | [diff] [blame] | 144 | |
| 145 | /* |
| 146 | * fs_pin.c |
| 147 | */ |
| 148 | extern void sb_pin_kill(struct super_block *sb); |
| 149 | extern void mnt_pin_kill(struct mount *m); |