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