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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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de76c2fe9b
Now we pass the vfsmount when mounting and remounting. This allows the filesystem to actually set up the mount specific data, although we can't quite do anything with it yet. show_options is expanded to include data that lives with the mount. To avoid changing existing filesystems, these have been added as new vfs functions. Change-Id: If80670bfad9f287abb8ac22457e1b034c9697097 Signed-off-by: Daniel Rosenberg <drosen@google.com>
143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/* fs/ internal definitions
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*
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* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/lglock.h>
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struct super_block;
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struct file_system_type;
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struct linux_binprm;
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struct path;
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struct mount;
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/*
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* block_dev.c
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*/
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#ifdef CONFIG_BLOCK
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extern void __init bdev_cache_init(void);
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extern int __sync_blockdev(struct block_device *bdev, int wait);
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#else
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static inline void bdev_cache_init(void)
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{
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}
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static inline int __sync_blockdev(struct block_device *bdev, int wait)
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{
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return 0;
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}
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#endif
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/*
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* char_dev.c
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*/
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extern void __init chrdev_init(void);
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/*
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* namei.c
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*/
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extern int __inode_permission(struct inode *, int);
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/*
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* namespace.c
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*/
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extern int copy_mount_options(const void __user *, unsigned long *);
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extern int copy_mount_string(const void __user *, char **);
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extern struct vfsmount *lookup_mnt(struct path *);
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extern int finish_automount(struct vfsmount *, struct path *);
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extern int sb_prepare_remount_readonly(struct super_block *);
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extern void __init mnt_init(void);
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extern struct lglock vfsmount_lock;
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extern int __mnt_want_write(struct vfsmount *);
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extern int __mnt_want_write_file(struct file *);
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extern void __mnt_drop_write(struct vfsmount *);
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extern void __mnt_drop_write_file(struct file *);
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/*
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* fs_struct.c
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*/
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extern void chroot_fs_refs(const struct path *, const struct path *);
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/*
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* file_table.c
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*/
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extern struct file *get_empty_filp(void);
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/*
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* super.c
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*/
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extern int do_remount_sb(struct super_block *, int, void *, int);
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extern int do_remount_sb2(struct vfsmount *, struct super_block *, int,
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void *, int);
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extern bool grab_super_passive(struct super_block *sb);
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extern struct dentry *mount_fs(struct file_system_type *,
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int, const char *, struct vfsmount *, void *);
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extern struct super_block *user_get_super(dev_t);
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/*
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* open.c
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*/
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struct open_flags {
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int open_flag;
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umode_t mode;
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int acc_mode;
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int intent;
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};
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extern struct file *do_filp_open(int dfd, struct filename *pathname,
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const struct open_flags *op, int flags);
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extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
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const char *, const struct open_flags *, int lookup_flags);
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extern long do_handle_open(int mountdirfd,
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struct file_handle __user *ufh, int open_flag);
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extern int open_check_o_direct(struct file *f);
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/*
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* inode.c
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*/
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extern spinlock_t inode_sb_list_lock;
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extern void inode_add_lru(struct inode *inode);
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/*
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* fs-writeback.c
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*/
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extern void inode_wb_list_del(struct inode *inode);
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extern int get_nr_dirty_inodes(void);
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extern void evict_inodes(struct super_block *);
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extern int invalidate_inodes(struct super_block *, bool);
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/*
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* dcache.c
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*/
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extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
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/*
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* read_write.c
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*/
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extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
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/*
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* splice.c
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*/
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extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
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loff_t *opos, size_t len, unsigned int flags);
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/*
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* pipe.c
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*/
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extern const struct file_operations pipefifo_fops;
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