1 /* fs/ internal definitions
3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
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.
12 #include <linux/lglock.h>
15 struct file_system_type;
23 extern struct super_block *blockdev_superblock;
24 extern void __init bdev_cache_init(void);
26 static inline int sb_is_blkdev_sb(struct super_block *sb)
28 return sb == blockdev_superblock;
31 extern int __sync_blockdev(struct block_device *bdev, int wait);
34 static inline void bdev_cache_init(void)
38 static inline int sb_is_blkdev_sb(struct super_block *sb)
43 static inline int __sync_blockdev(struct block_device *bdev, int wait)
52 extern void __init chrdev_init(void);
57 extern int check_unsafe_exec(struct linux_binprm *);
62 extern int copy_mount_options(const void __user *, unsigned long *);
63 extern int copy_mount_string(const void __user *, char **);
65 extern unsigned int mnt_get_count(struct vfsmount *mnt);
66 extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
67 extern struct vfsmount *lookup_mnt(struct path *);
68 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
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);
73 extern int finish_automount(struct vfsmount *, struct path *);
75 extern void mnt_make_longterm(struct vfsmount *);
76 extern void mnt_make_shortterm(struct vfsmount *);
78 extern void __init mnt_init(void);
80 DECLARE_BRLOCK(vfsmount_lock);
86 extern void chroot_fs_refs(struct path *, struct path *);
91 extern void file_sb_list_add(struct file *f, struct super_block *sb);
92 extern void file_sb_list_del(struct file *f);
93 extern void mark_files_ro(struct super_block *);
94 extern struct file *get_empty_filp(void);
99 extern int do_remount_sb(struct super_block *, int, void *, int);
100 extern bool grab_super_passive(struct super_block *sb);
101 extern void __put_super(struct super_block *sb);
102 extern void put_super(struct super_block *sb);
103 extern struct dentry *mount_fs(struct file_system_type *,
104 int, const char *, void *);
110 extern struct file *nameidata_to_filp(struct nameidata *);
111 extern void release_open_intent(struct nameidata *);
118 extern struct file *do_filp_open(int dfd, const char *pathname,
119 const struct open_flags *op, int lookup_flags);
120 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
121 const char *, const struct open_flags *, int lookup_flags);
123 extern long do_handle_open(int mountdirfd,
124 struct file_handle __user *ufh, int open_flag);
129 extern spinlock_t inode_sb_list_lock;
134 extern void inode_wb_list_del(struct inode *inode);
136 extern int get_nr_dirty_inodes(void);
137 extern void evict_inodes(struct super_block *);
138 extern int invalidate_inodes(struct super_block *, bool);
143 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);