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 | |
Nick Piggin | 99b7db7 | 2010-08-18 04:37:39 +1000 | [diff] [blame] | 12 | #include <linux/lglock.h> |
| 13 | |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 14 | struct super_block; |
Al Viro | 9d412a4 | 2011-03-17 22:08:28 -0400 | [diff] [blame] | 15 | struct file_system_type; |
David Howells | a6f76f2 | 2008-11-14 10:39:24 +1100 | [diff] [blame] | 16 | struct linux_binprm; |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 17 | struct path; |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 18 | |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 19 | /* |
| 20 | * block_dev.c |
| 21 | */ |
David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 22 | #ifdef CONFIG_BLOCK |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 23 | extern struct super_block *blockdev_superblock; |
| 24 | extern void __init bdev_cache_init(void); |
| 25 | |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 26 | static inline int sb_is_blkdev_sb(struct super_block *sb) |
| 27 | { |
| 28 | return sb == blockdev_superblock; |
| 29 | } |
David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 30 | |
Jan Kara | 5cee581 | 2009-04-27 16:43:51 +0200 | [diff] [blame] | 31 | extern int __sync_blockdev(struct block_device *bdev, int wait); |
| 32 | |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 33 | #else |
| 34 | static inline void bdev_cache_init(void) |
| 35 | { |
| 36 | } |
| 37 | |
| 38 | static inline int sb_is_blkdev_sb(struct super_block *sb) |
| 39 | { |
| 40 | return 0; |
| 41 | } |
Jan Kara | 5cee581 | 2009-04-27 16:43:51 +0200 | [diff] [blame] | 42 | |
| 43 | static inline int __sync_blockdev(struct block_device *bdev, int wait) |
| 44 | { |
| 45 | return 0; |
| 46 | } |
David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 47 | #endif |
David Howells | 7b0de42 | 2006-08-29 19:06:07 +0100 | [diff] [blame] | 48 | |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 49 | /* |
| 50 | * char_dev.c |
| 51 | */ |
| 52 | extern void __init chrdev_init(void); |
| 53 | |
| 54 | /* |
David Howells | a6f76f2 | 2008-11-14 10:39:24 +1100 | [diff] [blame] | 55 | * exec.c |
| 56 | */ |
Al Viro | 498052b | 2009-03-30 07:20:30 -0400 | [diff] [blame] | 57 | extern int check_unsafe_exec(struct linux_binprm *); |
David Howells | a6f76f2 | 2008-11-14 10:39:24 +1100 | [diff] [blame] | 58 | |
| 59 | /* |
David Howells | 07f3f05c | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 60 | * namespace.c |
| 61 | */ |
| 62 | extern int copy_mount_options(const void __user *, unsigned long *); |
Vegard Nossum | eca6f53 | 2009-09-18 13:05:45 -0700 | [diff] [blame] | 63 | extern int copy_mount_string(const void __user *, char **); |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 64 | |
Nick Piggin | b3e19d9 | 2011-01-07 17:50:11 +1100 | [diff] [blame] | 65 | extern unsigned int mnt_get_count(struct vfsmount *mnt); |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 66 | extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int); |
David Howells | 0f60f24 | 2011-03-21 14:28:58 +0000 | [diff] [blame] | 67 | extern struct vfsmount *lookup_mnt(struct path *); |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 68 | extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *, |
| 69 | struct vfsmount *); |
| 70 | extern void release_mounts(struct list_head *); |
| 71 | extern void umount_tree(struct vfsmount *, int, struct list_head *); |
| 72 | extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int); |
Al Viro | 19a167a | 2011-01-17 01:35:23 -0500 | [diff] [blame] | 73 | extern int finish_automount(struct vfsmount *, struct path *); |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 74 | |
Al Viro | f03c659 | 2011-01-14 22:30:21 -0500 | [diff] [blame] | 75 | extern void mnt_make_longterm(struct vfsmount *); |
| 76 | extern void mnt_make_shortterm(struct vfsmount *); |
| 77 | |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 78 | extern void __init mnt_init(void); |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 79 | |
Nick Piggin | 99b7db7 | 2010-08-18 04:37:39 +1000 | [diff] [blame] | 80 | DECLARE_BRLOCK(vfsmount_lock); |
| 81 | |
Al Viro | 47cd813 | 2010-02-05 02:01:14 -0500 | [diff] [blame] | 82 | |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 83 | /* |
| 84 | * fs_struct.c |
| 85 | */ |
| 86 | extern void chroot_fs_refs(struct path *, struct path *); |
npiggin@suse.de | 864d7c4 | 2009-04-26 20:25:56 +1000 | [diff] [blame] | 87 | |
| 88 | /* |
| 89 | * file_table.c |
| 90 | */ |
Nick Piggin | d996b62 | 2010-08-18 04:37:36 +1000 | [diff] [blame] | 91 | extern void file_sb_list_add(struct file *f, struct super_block *sb); |
| 92 | extern void file_sb_list_del(struct file *f); |
npiggin@suse.de | 864d7c4 | 2009-04-26 20:25:56 +1000 | [diff] [blame] | 93 | extern void mark_files_ro(struct super_block *); |
Eric Paris | e81e3f4 | 2009-12-04 15:47:36 -0500 | [diff] [blame] | 94 | extern struct file *get_empty_filp(void); |
Al Viro | 62c6943 | 2009-05-07 03:12:29 -0400 | [diff] [blame] | 95 | |
| 96 | /* |
| 97 | * super.c |
| 98 | */ |
| 99 | extern int do_remount_sb(struct super_block *, int, void *, int); |
Dave Chinner | 12ad3ab | 2011-07-08 14:14:41 +1000 | [diff] [blame] | 100 | extern bool grab_super_passive(struct super_block *sb); |
Al Viro | 35cf7ba | 2010-03-22 21:13:53 -0400 | [diff] [blame] | 101 | extern void __put_super(struct super_block *sb); |
| 102 | extern void put_super(struct super_block *sb); |
Al Viro | 9d412a4 | 2011-03-17 22:08:28 -0400 | [diff] [blame] | 103 | extern struct dentry *mount_fs(struct file_system_type *, |
| 104 | int, const char *, void *); |
Al Viro | 482928d | 2009-12-19 10:10:39 -0500 | [diff] [blame] | 105 | |
| 106 | /* |
| 107 | * open.c |
| 108 | */ |
| 109 | struct nameidata; |
| 110 | extern struct file *nameidata_to_filp(struct nameidata *); |
| 111 | extern void release_open_intent(struct nameidata *); |
Al Viro | 47c805d | 2011-02-23 17:44:09 -0500 | [diff] [blame] | 112 | struct open_flags { |
| 113 | int open_flag; |
| 114 | int mode; |
| 115 | int acc_mode; |
| 116 | int intent; |
| 117 | }; |
| 118 | extern struct file *do_filp_open(int dfd, const char *pathname, |
| 119 | const struct open_flags *op, int lookup_flags); |
Al Viro | 73d049a | 2011-03-11 12:08:24 -0500 | [diff] [blame] | 120 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, |
| 121 | const char *, const struct open_flags *, int lookup_flags); |
Al Viro | a8dade3 | 2010-10-24 11:13:10 -0400 | [diff] [blame] | 122 | |
Aneesh Kumar K.V | becfd1f | 2011-01-29 18:43:26 +0530 | [diff] [blame] | 123 | extern long do_handle_open(int mountdirfd, |
| 124 | struct file_handle __user *ufh, int open_flag); |
| 125 | |
Al Viro | a8dade3 | 2010-10-24 11:13:10 -0400 | [diff] [blame] | 126 | /* |
| 127 | * inode.c |
| 128 | */ |
Dave Chinner | 55fa609 | 2011-03-22 22:23:40 +1100 | [diff] [blame] | 129 | extern spinlock_t inode_sb_list_lock; |
| 130 | |
Dave Chinner | a66979a | 2011-03-22 22:23:41 +1100 | [diff] [blame] | 131 | /* |
| 132 | * fs-writeback.c |
| 133 | */ |
| 134 | extern void inode_wb_list_del(struct inode *inode); |
| 135 | |
Dave Chinner | cffbc8a | 2010-10-23 05:03:02 -0400 | [diff] [blame] | 136 | extern int get_nr_dirty_inodes(void); |
Al Viro | a4cdbd8 | 2010-10-29 05:49:13 -0400 | [diff] [blame] | 137 | extern void evict_inodes(struct super_block *); |
NeilBrown | 93b270f | 2011-02-24 17:25:47 +1100 | [diff] [blame] | 138 | extern int invalidate_inodes(struct super_block *, bool); |
Al Viro | a4464db | 2011-07-07 15:03:58 -0400 | [diff] [blame] | 139 | |
| 140 | /* |
| 141 | * dcache.c |
| 142 | */ |
| 143 | extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); |