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gerrit-public.fairphone.software / kernel / msm-4.19 / 148c274ea64448673c4294e32cfd0d60b524ca9a / . / fs / internal.h
blob: 513e0d859a6c18d7b274a9ebe16afcc9e7f8eca4 [file] [log] [blame]
David Howells07f3f05c2006-09-30 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;
Al Viroc7105362011-11-24 18:22:03 -0500[diff] [blame]18struct mount;
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]19
David Howells07f3f05c2006-09-30 20:52:18 +0200[diff] [blame]20/*
21 * block_dev.c
22 */
David Howells93614012006-09-30 20:45:40 +0200[diff] [blame]23#ifdef CONFIG_BLOCK
David Howells07f3f05c2006-09-30 20:52:18 +0200[diff] [blame]24extern void __init bdev_cache_init(void);
25
Jan Kara5cee5812009-04-27 16:43:51 +0200[diff] [blame]26extern int __sync_blockdev(struct block_device *bdev, int wait);
27
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]28#else
29static inline void bdev_cache_init(void)
30{
31}
32
Jan Kara5cee5812009-04-27 16:43:51 +0200[diff] [blame]33static inline int __sync_blockdev(struct block_device *bdev, int wait)
34{
35 return 0;
36}
David Howells93614012006-09-30 20:45:40 +0200[diff] [blame]37#endif
David Howells7b0de422006-08-29 19:06:07 +0100[diff] [blame]38
David Howells07f3f05c2006-09-30 20:52:18 +0200[diff] [blame]39/*
40 * char_dev.c
41 */
42extern void __init chrdev_init(void);
43
44/*
David Howells0bdaea92012-06-25 12:55:46 +0100[diff] [blame]45 * namei.c
46 */
47extern int __inode_permission(struct inode *, int);
Al Viro197df042013-09-08 14:03:27 -0400[diff] [blame]48extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
49extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
50 const char *, unsigned int, struct path *);
David Howells0bdaea92012-06-25 12:55:46 +0100[diff] [blame]51
52/*
David Howells07f3f05c2006-09-30 20:52:18 +0200[diff] [blame]53 * namespace.c
54 */
55extern int copy_mount_options(const void __user *, unsigned long *);
Vegard Nossumeca6f532009-09-18 13:05:45 -0700[diff] [blame]56extern int copy_mount_string(const void __user *, char **);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]57
David Howells0f60f242011-03-21 14:28:58 +0000[diff] [blame]58extern struct vfsmount *lookup_mnt(struct path *);
Al Viro19a167a2011-01-17 01:35:23 -0500[diff] [blame]59extern int finish_automount(struct vfsmount *, struct path *);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]60
Miklos Szeredi4ed5e822011-11-21 12:11:31 +0100[diff] [blame]61extern int sb_prepare_remount_readonly(struct super_block *);
Al Virof03c6592011-01-14 22:30:21 -0500[diff] [blame]62
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]63extern void __init mnt_init(void);
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]64
Andi Kleeneea62f82012-05-08 13:32:24 +0930[diff] [blame]65extern struct lglock vfsmount_lock;
Nick Piggin99b7db72010-08-18 04:37:39 +1000[diff] [blame]66
Jan Karaeb04c282012-06-12 16:20:35 +0200[diff] [blame]67extern int __mnt_want_write(struct vfsmount *);
68extern int __mnt_want_write_file(struct file *);
69extern void __mnt_drop_write(struct vfsmount *);
70extern void __mnt_drop_write_file(struct file *);
Al Viro47cd8132010-02-05 02:01:14 -0500[diff] [blame]71
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]72/*
73 * fs_struct.c
74 */
Al Virodcf787f2013-03-01 23:51:07 -0500[diff] [blame]75extern void chroot_fs_refs(const struct path *, const struct path *);
npiggin@suse.de864d7c42009-04-26 20:25:56 +1000[diff] [blame]76
77/*
78 * file_table.c
79 */
Nick Piggind996b622010-08-18 04:37:36 +1000[diff] [blame]80extern void file_sb_list_add(struct file *f, struct super_block *sb);
81extern void file_sb_list_del(struct file *f);
npiggin@suse.de864d7c42009-04-26 20:25:56 +1000[diff] [blame]82extern void mark_files_ro(struct super_block *);
Eric Parise81e3f42009-12-04 15:47:36 -0500[diff] [blame]83extern struct file *get_empty_filp(void);
Al Viro62c69432009-05-07 03:12:29 -0400[diff] [blame]84
85/*
86 * super.c
87 */
88extern int do_remount_sb(struct super_block *, int, void *, int);
Dave Chinner12ad3ab2011-07-08 14:14:41 +1000[diff] [blame]89extern bool grab_super_passive(struct super_block *sb);
Al Viro9d412a42011-03-17 22:08:28 -0400[diff] [blame]90extern struct dentry *mount_fs(struct file_system_type *,
91 int, const char *, void *);
Al Virocf31e702012-01-02 22:28:36 -0500[diff] [blame]92extern struct super_block *user_get_super(dev_t);
Al Viro482928d2009-12-19 10:10:39 -0500[diff] [blame]93
94/*
95 * open.c
96 */
Al Viro47c805d2011-02-23 17:44:09 -0500[diff] [blame]97struct open_flags {
98 int open_flag;
Al Viroa218d0f2011-11-21 14:59:34 -0500[diff] [blame]99 umode_t mode;
Al Viro47c805d2011-02-23 17:44:09 -0500[diff] [blame]100 int acc_mode;
101 int intent;
Al Virof9652e12013-06-11 08:23:01 +0400[diff] [blame]102 int lookup_flags;
Al Viro47c805d2011-02-23 17:44:09 -0500[diff] [blame]103};
Jeff Layton669abf42012-10-10 16:43:10 -0400[diff] [blame]104extern struct file *do_filp_open(int dfd, struct filename *pathname,
Al Virof9652e12013-06-11 08:23:01 +0400[diff] [blame]105 const struct open_flags *op);
Al Viro73d049a2011-03-11 12:08:24 -0500[diff] [blame]106extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
Al Virof9652e12013-06-11 08:23:01 +0400[diff] [blame]107 const char *, const struct open_flags *);
Al Viroa8dade32010-10-24 11:13:10 -0400[diff] [blame]108
Aneesh Kumar K.Vbecfd1f2011-01-29 18:43:26 +0530[diff] [blame]109extern long do_handle_open(int mountdirfd,
110 struct file_handle __user *ufh, int open_flag);
Miklos Szeredi90ad1a82012-05-21 17:30:15 +0200[diff] [blame]111extern int open_check_o_direct(struct file *f);
Aneesh Kumar K.Vbecfd1f2011-01-29 18:43:26 +0530[diff] [blame]112
Al Viroa8dade32010-10-24 11:13:10 -0400[diff] [blame]113/*
114 * inode.c
115 */
Dave Chinner55fa6092011-03-22 22:23:40 +1100[diff] [blame]116extern spinlock_t inode_sb_list_lock;
Dave Chinner9b17c622013-08-28 10:18:05 +1000[diff] [blame]117extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan,
118 int nid);
Jan Kara4eff96d2012-11-26 16:29:51 -0800[diff] [blame]119extern void inode_add_lru(struct inode *inode);
Dave Chinner55fa6092011-03-22 22:23:40 +1100[diff] [blame]120
Dave Chinnera66979a2011-03-22 22:23:41 +1100[diff] [blame]121/*
122 * fs-writeback.c
123 */
124extern void inode_wb_list_del(struct inode *inode);
125
Glauber Costa3942c072013-08-28 10:17:53 +1000[diff] [blame]126extern long get_nr_dirty_inodes(void);
Al Viroa4cdbd82010-10-29 05:49:13 -0400[diff] [blame]127extern void evict_inodes(struct super_block *);
NeilBrown93b270f2011-02-24 17:25:47 +1100[diff] [blame]128extern int invalidate_inodes(struct super_block *, bool);
Al Viroa4464db2011-07-07 15:03:58 -0400[diff] [blame]129
130/*
131 * dcache.c
132 */
133extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
Miklos Szeredieed81002013-09-05 14:39:11 +0200[diff] [blame]134extern int d_set_mounted(struct dentry *dentry);
Dave Chinner9b17c622013-08-28 10:18:05 +1000[diff] [blame]135extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,
136 int nid);
Al Viro06ae43f2013-03-20 13:19:30 -0400[diff] [blame]137
138/*
139 * read_write.c
140 */
141extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
Al Viro68d70d02013-06-19 15:26:04 +0400[diff] [blame]142extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
Al Viro599a0ac2013-03-12 09:58:10 -0400[diff] [blame]143
144/*
Al Viro7995bd22013-06-20 18:58:36 +0400[diff] [blame]145 * splice.c
146 */
147extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
148 loff_t *opos, size_t len, unsigned int flags);
149
150/*
Al Viro599a0ac2013-03-12 09:58:10 -0400[diff] [blame]151 * pipe.c
152 */
153extern const struct file_operations pipefifo_fops;