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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 | ||
8 | struct super_block; | |
9 | struct file_system_type; | |
10 | struct iomap; | |
11 | struct iomap_ops; | |
12 | struct linux_binprm; | |
13 | struct path; | |
14 | struct mount; | |
15 | struct shrink_control; | |
16 | struct fs_context; | |
17 | struct user_namespace; | |
18 | ||
19 | /* | |
20 | * block_dev.c | |
21 | */ | |
22 | #ifdef CONFIG_BLOCK | |
23 | extern void __init bdev_cache_init(void); | |
24 | ||
25 | extern int __sync_blockdev(struct block_device *bdev, int wait); | |
26 | void iterate_bdevs(void (*)(struct block_device *, void *), void *); | |
27 | void emergency_thaw_bdev(struct super_block *sb); | |
28 | void bd_forget(struct inode *inode); | |
29 | #else | |
30 | static inline void bdev_cache_init(void) | |
31 | { | |
32 | } | |
33 | ||
34 | static inline int __sync_blockdev(struct block_device *bdev, int wait) | |
35 | { | |
36 | return 0; | |
37 | } | |
38 | static inline void iterate_bdevs(void (*f)(struct block_device *, void *), | |
39 | void *arg) | |
40 | { | |
41 | } | |
42 | static inline int emergency_thaw_bdev(struct super_block *sb) | |
43 | { | |
44 | return 0; | |
45 | } | |
46 | static inline void bd_forget(struct inode *inode) | |
47 | { | |
48 | } | |
49 | #endif /* CONFIG_BLOCK */ | |
50 | ||
51 | /* | |
52 | * buffer.c | |
53 | */ | |
54 | extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len, | |
55 | get_block_t *get_block, struct iomap *iomap); | |
56 | ||
57 | /* | |
58 | * char_dev.c | |
59 | */ | |
60 | extern void __init chrdev_init(void); | |
61 | ||
62 | /* | |
63 | * fs_context.c | |
64 | */ | |
65 | extern const struct fs_context_operations legacy_fs_context_ops; | |
66 | extern int parse_monolithic_mount_data(struct fs_context *, void *); | |
67 | extern void fc_drop_locked(struct fs_context *); | |
68 | extern void vfs_clean_context(struct fs_context *fc); | |
69 | extern int finish_clean_context(struct fs_context *fc); | |
70 | ||
71 | /* | |
72 | * namei.c | |
73 | */ | |
74 | extern int filename_lookup(int dfd, struct filename *name, unsigned flags, | |
75 | struct path *path, struct path *root); | |
76 | extern int vfs_path_lookup(struct dentry *, struct vfsmount *, | |
77 | const char *, unsigned int, struct path *); | |
78 | long do_mknodat(int dfd, const char __user *filename, umode_t mode, | |
79 | unsigned int dev); | |
80 | long do_mkdirat(int dfd, const char __user *pathname, umode_t mode); | |
81 | long do_rmdir(int dfd, const char __user *pathname); | |
82 | long do_unlinkat(int dfd, struct filename *name); | |
83 | long do_symlinkat(const char __user *oldname, int newdfd, | |
84 | const char __user *newname); | |
85 | int do_linkat(int olddfd, const char __user *oldname, int newdfd, | |
86 | const char __user *newname, int flags); | |
87 | ||
88 | /* | |
89 | * namespace.c | |
90 | */ | |
91 | extern void *copy_mount_options(const void __user *); | |
92 | extern char *copy_mount_string(const void __user *); | |
93 | ||
94 | extern struct vfsmount *lookup_mnt(const struct path *); | |
95 | extern int finish_automount(struct vfsmount *, struct path *); | |
96 | ||
97 | extern int sb_prepare_remount_readonly(struct super_block *); | |
98 | ||
99 | extern void __init mnt_init(void); | |
100 | ||
101 | extern int __mnt_want_write_file(struct file *); | |
102 | extern void __mnt_drop_write_file(struct file *); | |
103 | ||
104 | extern void dissolve_on_fput(struct vfsmount *); | |
105 | /* | |
106 | * fs_struct.c | |
107 | */ | |
108 | extern void chroot_fs_refs(const struct path *, const struct path *); | |
109 | ||
110 | /* | |
111 | * file_table.c | |
112 | */ | |
113 | extern struct file *alloc_empty_file(int, const struct cred *); | |
114 | extern struct file *alloc_empty_file_noaccount(int, const struct cred *); | |
115 | ||
116 | /* | |
117 | * super.c | |
118 | */ | |
119 | extern int reconfigure_super(struct fs_context *); | |
120 | extern bool trylock_super(struct super_block *sb); | |
121 | extern struct super_block *user_get_super(dev_t); | |
122 | extern bool mount_capable(struct fs_context *); | |
123 | ||
124 | /* | |
125 | * open.c | |
126 | */ | |
127 | struct open_flags { | |
128 | int open_flag; | |
129 | umode_t mode; | |
130 | int acc_mode; | |
131 | int intent; | |
132 | int lookup_flags; | |
133 | }; | |
134 | extern struct file *do_filp_open(int dfd, struct filename *pathname, | |
135 | const struct open_flags *op); | |
136 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, | |
137 | const char *, const struct open_flags *); | |
138 | extern struct open_how build_open_how(int flags, umode_t mode); | |
139 | extern int build_open_flags(const struct open_how *how, struct open_flags *op); | |
140 | ||
141 | long do_sys_ftruncate(unsigned int fd, loff_t length, int small); | |
142 | int do_fchmodat(int dfd, const char __user *filename, umode_t mode); | |
143 | int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group, | |
144 | int flag); | |
145 | ||
146 | extern int vfs_open(const struct path *, struct file *); | |
147 | ||
148 | /* | |
149 | * inode.c | |
150 | */ | |
151 | extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc); | |
152 | extern void inode_add_lru(struct inode *inode); | |
153 | extern int dentry_needs_remove_privs(struct dentry *dentry); | |
154 | ||
155 | /* | |
156 | * fs-writeback.c | |
157 | */ | |
158 | extern long get_nr_dirty_inodes(void); | |
159 | extern int invalidate_inodes(struct super_block *, bool); | |
160 | ||
161 | /* | |
162 | * dcache.c | |
163 | */ | |
164 | extern int d_set_mounted(struct dentry *dentry); | |
165 | extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc); | |
166 | extern struct dentry *d_alloc_cursor(struct dentry *); | |
167 | extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *); | |
168 | extern char *simple_dname(struct dentry *, char *, int); | |
169 | extern void dput_to_list(struct dentry *, struct list_head *); | |
170 | extern void shrink_dentry_list(struct list_head *); | |
171 | ||
172 | /* | |
173 | * read_write.c | |
174 | */ | |
175 | extern int rw_verify_area(int, struct file *, const loff_t *, size_t); | |
176 | ||
177 | /* | |
178 | * pipe.c | |
179 | */ | |
180 | extern const struct file_operations pipefifo_fops; | |
181 | ||
182 | /* | |
183 | * fs_pin.c | |
184 | */ | |
185 | extern void group_pin_kill(struct hlist_head *p); | |
186 | extern void mnt_pin_kill(struct mount *m); | |
187 | ||
188 | /* | |
189 | * fs/nsfs.c | |
190 | */ | |
191 | extern const struct dentry_operations ns_dentry_operations; | |
192 | ||
193 | /* direct-io.c: */ | |
194 | int sb_init_dio_done_wq(struct super_block *sb); | |
195 | ||
196 | /* | |
197 | * fs/stat.c: | |
198 | */ | |
199 | int do_statx(int dfd, const char __user *filename, unsigned flags, | |
200 | unsigned int mask, struct statx __user *buffer); |