Gitiles
Code Review Sign In
192.168.1.100 / T108 / e958203796650e3959a43708d67534bf36f4c83b / . / marvell / linux / fs / internal.h
blob: 377f984e92267bd6c590c4f4ebaae2cc03ad91d2 [file] [log] [blame]
b.liue9582032025-04-17 19:18:16 +0800[diff] [blame^]1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* fs/ internal definitions
3 *
4 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7
8struct super_block;
9struct file_system_type;
10struct iomap;
11struct iomap_ops;
12struct linux_binprm;
13struct path;
14struct mount;
15struct shrink_control;
16struct fs_context;
17struct user_namespace;
18
19/*
20 * block_dev.c
21 */
22#ifdef CONFIG_BLOCK
23extern void __init bdev_cache_init(void);
24
25extern int __sync_blockdev(struct block_device *bdev, int wait);
26
27#else
28static inline void bdev_cache_init(void)
29{
30}
31
32static inline int __sync_blockdev(struct block_device *bdev, int wait)
33{
34 return 0;
35}
36#endif
37
38/*
39 * buffer.c
40 */
41extern void guard_bio_eod(struct bio *bio);
42extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
43 get_block_t *get_block, struct iomap *iomap);
44
45/*
46 * char_dev.c
47 */
48extern void __init chrdev_init(void);
49
50/*
51 * fs_context.c
52 */
53extern const struct fs_context_operations legacy_fs_context_ops;
54extern int parse_monolithic_mount_data(struct fs_context *, void *);
55extern void vfs_clean_context(struct fs_context *fc);
56extern int finish_clean_context(struct fs_context *fc);
57
58/*
59 * namei.c
60 */
61extern int filename_lookup(int dfd, struct filename *name, unsigned flags,
62 struct path *path, struct path *root);
63extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
64extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
65 const char *, unsigned int, struct path *);
66long do_mknodat(int dfd, const char __user *filename, umode_t mode,
67 unsigned int dev);
68long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
69long do_rmdir(int dfd, const char __user *pathname);
70long do_unlinkat(int dfd, struct filename *name);
71long do_symlinkat(const char __user *oldname, int newdfd,
72 const char __user *newname);
73int do_linkat(int olddfd, const char __user *oldname, int newdfd,
74 const char __user *newname, int flags);
75
76/*
77 * namespace.c
78 */
79extern void *copy_mount_options(const void __user *);
80extern char *copy_mount_string(const void __user *);
81
82extern struct vfsmount *lookup_mnt(const struct path *);
83extern int finish_automount(struct vfsmount *, struct path *);
84
85extern int sb_prepare_remount_readonly(struct super_block *);
86
87extern void __init mnt_init(void);
88
89extern int __mnt_want_write_file(struct file *);
90extern void __mnt_drop_write_file(struct file *);
91
92extern void dissolve_on_fput(struct vfsmount *);
93/*
94 * fs_struct.c
95 */
96extern void chroot_fs_refs(const struct path *, const struct path *);
97
98/*
99 * file_table.c
100 */
101extern struct file *alloc_empty_file(int, const struct cred *);
102extern struct file *alloc_empty_file_noaccount(int, const struct cred *);
103
104/*
105 * super.c
106 */
107extern int reconfigure_super(struct fs_context *);
108extern bool trylock_super(struct super_block *sb);
109extern struct super_block *user_get_super(dev_t);
110extern bool mount_capable(struct fs_context *);
111
112/*
113 * open.c
114 */
115struct open_flags {
116 int open_flag;
117 umode_t mode;
118 int acc_mode;
119 int intent;
120 int lookup_flags;
121};
122extern struct file *do_filp_open(int dfd, struct filename *pathname,
123 const struct open_flags *op);
124extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
125 const char *, const struct open_flags *);
126
127long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
128long do_faccessat(int dfd, const char __user *filename, int mode);
129int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
130int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
131 int flag);
132
133extern int vfs_open(const struct path *, struct file *);
134
135/*
136 * inode.c
137 */
138extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
139extern void inode_add_lru(struct inode *inode);
140extern int dentry_needs_remove_privs(struct dentry *dentry);
141void lock_two_inodes(struct inode *inode1, struct inode *inode2,
142 unsigned subclass1, unsigned subclass2);
143
144/*
145 * fs-writeback.c
146 */
147extern void inode_io_list_del(struct inode *inode);
148
149extern long get_nr_dirty_inodes(void);
150extern int invalidate_inodes(struct super_block *, bool);
151
152/*
153 * dcache.c
154 */
155extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
156extern int d_set_mounted(struct dentry *dentry);
157extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
158extern struct dentry *d_alloc_cursor(struct dentry *);
159extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
160extern char *simple_dname(struct dentry *, char *, int);
161extern void dput_to_list(struct dentry *, struct list_head *);
162extern void shrink_dentry_list(struct list_head *);
163
164/*
165 * read_write.c
166 */
167extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
168
169/*
170 * pipe.c
171 */
172extern const struct file_operations pipefifo_fops;
173
174/*
175 * fs_pin.c
176 */
177extern void group_pin_kill(struct hlist_head *p);
178extern void mnt_pin_kill(struct mount *m);
179
180/*
181 * fs/nsfs.c
182 */
183extern const struct dentry_operations ns_dentry_operations;
184
185/*
186 * fs/ioctl.c
187 */
188extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
189 unsigned long arg);
190
191/* direct-io.c: */
192int sb_init_dio_done_wq(struct super_block *sb);