1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* fs/ internal definitions
4 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
9 struct file_system_type;
15 struct shrink_control;
22 extern void __init bdev_cache_init(void);
24 extern int __sync_blockdev(struct block_device *bdev, int wait);
27 static inline void bdev_cache_init(void)
31 static inline int __sync_blockdev(struct block_device *bdev, int wait)
40 extern void guard_bio_eod(int rw, struct bio *bio);
41 extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
42 get_block_t *get_block, struct iomap *iomap);
47 extern void __init chrdev_init(void);
52 extern const struct fs_context_operations legacy_fs_context_ops;
53 extern int parse_monolithic_mount_data(struct fs_context *, void *);
54 extern void fc_drop_locked(struct fs_context *);
55 extern void vfs_clean_context(struct fs_context *fc);
56 extern int finish_clean_context(struct fs_context *fc);
61 extern int filename_lookup(int dfd, struct filename *name, unsigned flags,
62 struct path *path, struct path *root);
63 extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
64 extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
65 const char *, unsigned int, struct path *);
66 long do_mknodat(int dfd, const char __user *filename, umode_t mode,
68 long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
69 long do_rmdir(int dfd, const char __user *pathname);
70 long do_unlinkat(int dfd, struct filename *name);
71 long do_symlinkat(const char __user *oldname, int newdfd,
72 const char __user *newname);
73 int do_linkat(int olddfd, const char __user *oldname, int newdfd,
74 const char __user *newname, int flags);
79 extern void *copy_mount_options(const void __user *);
80 extern char *copy_mount_string(const void __user *);
82 extern struct vfsmount *lookup_mnt(const struct path *);
83 extern int finish_automount(struct vfsmount *, struct path *);
85 extern int sb_prepare_remount_readonly(struct super_block *);
87 extern void __init mnt_init(void);
89 extern int __mnt_want_write_file(struct file *);
90 extern void __mnt_drop_write_file(struct file *);
92 extern void dissolve_on_fput(struct vfsmount *);
96 extern void chroot_fs_refs(const struct path *, const struct path *);
101 extern struct file *alloc_empty_file(int, const struct cred *);
102 extern struct file *alloc_empty_file_noaccount(int, const struct cred *);
107 extern int reconfigure_super(struct fs_context *);
108 extern bool trylock_super(struct super_block *sb);
109 extern struct super_block *user_get_super(dev_t);
121 extern struct file *do_filp_open(int dfd, struct filename *pathname,
122 const struct open_flags *op);
123 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
124 const char *, const struct open_flags *);
126 long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
127 long do_faccessat(int dfd, const char __user *filename, int mode);
128 int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
129 int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
132 extern int vfs_open(const struct path *, struct file *);
137 extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
138 extern void inode_add_lru(struct inode *inode);
139 extern int dentry_needs_remove_privs(struct dentry *dentry);
144 extern void inode_io_list_del(struct inode *inode);
146 extern long get_nr_dirty_inodes(void);
147 extern int invalidate_inodes(struct super_block *, bool);
152 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
153 extern int d_set_mounted(struct dentry *dentry);
154 extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
155 extern struct dentry *d_alloc_cursor(struct dentry *);
156 extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
161 extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
166 extern const struct file_operations pipefifo_fops;
171 extern void group_pin_kill(struct hlist_head *p);
172 extern void mnt_pin_kill(struct mount *m);
177 extern const struct dentry_operations ns_dentry_operations;
182 extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
188 typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len,
189 void *data, struct iomap *iomap);
191 loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
192 unsigned flags, const struct iomap_ops *ops, void *data,
193 iomap_actor_t actor);
196 int sb_init_dio_done_wq(struct super_block *sb);