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gerrit-public.fairphone.software / kernel / msm-4.9 / 282b5c2f6f663c008444321fd8fcdd374596046b / . / fs / internal.h
blob: b29c46e4e32f6d72cc80c60073e85dcac9397750 [file] [log] [blame]
David Howells07f3f052006-09-30 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 Piggin99b7db72010-08-18 04:37:39 +1000[diff] [blame]12#include <linux/lglock.h>
13
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]14struct super_block;
Al Viro9d412a42011-03-17 22:08:28 -0400[diff] [blame]15struct file_system_type;
David Howellsa6f76f22008-11-14 10:39:24 +1100[diff] [blame]16struct linux_binprm;
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]17struct path;
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]18
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]19/*
20 * block_dev.c
21 */
David Howells93614012006-09-30 20:45:40 +0200[diff] [blame]22#ifdef CONFIG_BLOCK
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]23extern struct super_block *blockdev_superblock;
24extern void __init bdev_cache_init(void);
25
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]26static inline int sb_is_blkdev_sb(struct super_block *sb)
27{
28 return sb == blockdev_superblock;
29}
David Howells93614012006-09-30 20:45:40 +0200[diff] [blame]30
Jan Kara5cee5812009-04-27 16:43:51 +0200[diff] [blame]31extern int __sync_blockdev(struct block_device *bdev, int wait);
32
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]33#else
34static inline void bdev_cache_init(void)
35{
36}
37
38static inline int sb_is_blkdev_sb(struct super_block *sb)
39{
40 return 0;
41}
Jan Kara5cee5812009-04-27 16:43:51 +0200[diff] [blame]42
43static inline int __sync_blockdev(struct block_device *bdev, int wait)
44{
45 return 0;
46}
David Howells93614012006-09-30 20:45:40 +0200[diff] [blame]47#endif
David Howells7b0de422006-08-29 19:06:07 +0100[diff] [blame]48
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]49/*
50 * char_dev.c
51 */
52extern void __init chrdev_init(void);
53
54/*
David Howellsa6f76f22008-11-14 10:39:24 +1100[diff] [blame]55 * exec.c
56 */
Al Viro498052b2009-03-30 07:20:30 -0400[diff] [blame]57extern int check_unsafe_exec(struct linux_binprm *);
David Howellsa6f76f22008-11-14 10:39:24 +1100[diff] [blame]58
59/*
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]60 * namespace.c
61 */
62extern int copy_mount_options(const void __user *, unsigned long *);
Vegard Nossumeca6f532009-09-18 13:05:45 -0700[diff] [blame]63extern int copy_mount_string(const void __user *, char **);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]64
Nick Pigginb3e19d92011-01-07 17:50:11 +1100[diff] [blame]65extern unsigned int mnt_get_count(struct vfsmount *mnt);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]66extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
David Howells0f60f242011-03-21 14:28:58 +0000[diff] [blame]67extern struct vfsmount *lookup_mnt(struct path *);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]68extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
69 struct vfsmount *);
70extern void release_mounts(struct list_head *);
71extern void umount_tree(struct vfsmount *, int, struct list_head *);
72extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
Al Viro19a167a2011-01-17 01:35:23 -0500[diff] [blame]73extern int finish_automount(struct vfsmount *, struct path *);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]74
Al Virof03c6592011-01-14 22:30:21 -0500[diff] [blame]75extern void mnt_make_longterm(struct vfsmount *);
76extern void mnt_make_shortterm(struct vfsmount *);
77
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]78extern void __init mnt_init(void);
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]79
Nick Piggin99b7db72010-08-18 04:37:39 +1000[diff] [blame]80DECLARE_BRLOCK(vfsmount_lock);
81
Al Viro47cd8132010-02-05 02:01:14 -0500[diff] [blame]82
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]83/*
84 * fs_struct.c
85 */
86extern void chroot_fs_refs(struct path *, struct path *);
npiggin@suse.de864d7c42009-04-26 20:25:56 +1000[diff] [blame]87
88/*
89 * file_table.c
90 */
Nick Piggind996b622010-08-18 04:37:36 +1000[diff] [blame]91extern void file_sb_list_add(struct file *f, struct super_block *sb);
92extern void file_sb_list_del(struct file *f);
npiggin@suse.de864d7c42009-04-26 20:25:56 +1000[diff] [blame]93extern void mark_files_ro(struct super_block *);
Eric Parise81e3f42009-12-04 15:47:36 -0500[diff] [blame]94extern struct file *get_empty_filp(void);
Al Viro62c69432009-05-07 03:12:29 -0400[diff] [blame]95
96/*
97 * super.c
98 */
99extern int do_remount_sb(struct super_block *, int, void *, int);
Al Viro35cf7ba2010-03-22 21:13:53 -0400[diff] [blame]100extern void __put_super(struct super_block *sb);
101extern void put_super(struct super_block *sb);
Al Viro9d412a42011-03-17 22:08:28 -0400[diff] [blame]102extern struct dentry *mount_fs(struct file_system_type *,
103 int, const char *, void *);
Al Viro482928d2009-12-19 10:10:39 -0500[diff] [blame]104
105/*
106 * open.c
107 */
108struct nameidata;
109extern struct file *nameidata_to_filp(struct nameidata *);
110extern void release_open_intent(struct nameidata *);
Al Viro47c805d2011-02-23 17:44:09 -0500[diff] [blame]111struct open_flags {
112 int open_flag;
113 int mode;
114 int acc_mode;
115 int intent;
116};
117extern struct file *do_filp_open(int dfd, const char *pathname,
118 const struct open_flags *op, int lookup_flags);
Al Viro73d049a2011-03-11 12:08:24 -0500[diff] [blame]119extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
120 const char *, const struct open_flags *, int lookup_flags);
Al Viroa8dade32010-10-24 11:13:10 -0400[diff] [blame]121
Aneesh Kumar K.Vbecfd1f2011-01-29 18:43:26 +0530[diff] [blame]122extern long do_handle_open(int mountdirfd,
123 struct file_handle __user *ufh, int open_flag);
124
Al Viroa8dade32010-10-24 11:13:10 -0400[diff] [blame]125/*
126 * inode.c
127 */
Dave Chinner55fa6092011-03-22 22:23:40 +1100[diff] [blame]128extern spinlock_t inode_sb_list_lock;
129
Dave Chinnera66979a2011-03-22 22:23:41 +1100[diff] [blame]130/*
131 * fs-writeback.c
132 */
133extern void inode_wb_list_del(struct inode *inode);
134
Dave Chinnercffbc8a2010-10-23 05:03:02 -0400[diff] [blame]135extern int get_nr_dirty_inodes(void);
Al Viroa4cdbd82010-10-29 05:49:13 -0400[diff] [blame]136extern void evict_inodes(struct super_block *);
NeilBrown93b270f2011-02-24 17:25:47 +1100[diff] [blame]137extern int invalidate_inodes(struct super_block *, bool);