| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* fs/ internal definitions |
| 2 | * |
| 3 | * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. |
| 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/lglock.h> |
| 13 | |
| 14 | struct super_block; |
| 15 | struct file_system_type; |
| 16 | struct linux_binprm; |
| 17 | struct path; |
| 18 | struct mount; |
| 19 | |
| 20 | /* |
| 21 | * block_dev.c |
| 22 | */ |
| 23 | #ifdef CONFIG_BLOCK |
| 24 | extern void __init bdev_cache_init(void); |
| 25 | |
| 26 | extern int __sync_blockdev(struct block_device *bdev, int wait); |
| 27 | |
| 28 | #else |
| 29 | static inline void bdev_cache_init(void) |
| 30 | { |
| 31 | } |
| 32 | |
| 33 | static inline int __sync_blockdev(struct block_device *bdev, int wait) |
| 34 | { |
| 35 | return 0; |
| 36 | } |
| 37 | #endif |
| 38 | |
| 39 | /* |
| 40 | * char_dev.c |
| 41 | */ |
| 42 | extern void __init chrdev_init(void); |
| 43 | |
| 44 | /* |
| 45 | * namespace.c |
| 46 | */ |
| 47 | extern int copy_mount_options(const void __user *, unsigned long *); |
| 48 | extern int copy_mount_string(const void __user *, char **); |
| 49 | |
| 50 | extern struct vfsmount *lookup_mnt(struct path *); |
| 51 | extern int finish_automount(struct vfsmount *, struct path *); |
| 52 | |
| 53 | extern void mnt_make_longterm(struct vfsmount *); |
| 54 | extern void mnt_make_shortterm(struct vfsmount *); |
| 55 | extern int sb_prepare_remount_readonly(struct super_block *); |
| 56 | |
| 57 | extern void __init mnt_init(void); |
| 58 | |
| 59 | DECLARE_BRLOCK(vfsmount_lock); |
| 60 | |
| 61 | |
| 62 | /* |
| 63 | * fs_struct.c |
| 64 | */ |
| 65 | extern void chroot_fs_refs(struct path *, struct path *); |
| 66 | |
| 67 | /* |
| 68 | * file_table.c |
| 69 | */ |
| 70 | extern void file_sb_list_add(struct file *f, struct super_block *sb); |
| 71 | extern void file_sb_list_del(struct file *f); |
| 72 | extern void mark_files_ro(struct super_block *); |
| 73 | extern struct file *get_empty_filp(void); |
| 74 | |
| 75 | /* |
| 76 | * super.c |
| 77 | */ |
| 78 | extern int do_remount_sb(struct super_block *, int, void *, int); |
| 79 | extern bool grab_super_passive(struct super_block *sb); |
| 80 | extern struct dentry *mount_fs(struct file_system_type *, |
| 81 | int, const char *, void *); |
| 82 | extern struct super_block *user_get_super(dev_t); |
| 83 | |
| 84 | /* |
| 85 | * open.c |
| 86 | */ |
| 87 | struct nameidata; |
| 88 | extern struct file *nameidata_to_filp(struct nameidata *); |
| 89 | extern void release_open_intent(struct nameidata *); |
| 90 | struct open_flags { |
| 91 | int open_flag; |
| 92 | umode_t mode; |
| 93 | int acc_mode; |
| 94 | int intent; |
| 95 | }; |
| 96 | extern struct file *do_filp_open(int dfd, const char *pathname, |
| 97 | const struct open_flags *op, int lookup_flags); |
| 98 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, |
| 99 | const char *, const struct open_flags *, int lookup_flags); |
| 100 | |
| 101 | extern long do_handle_open(int mountdirfd, |
| 102 | struct file_handle __user *ufh, int open_flag); |
| 103 | |
| 104 | /* |
| 105 | * inode.c |
| 106 | */ |
| 107 | extern spinlock_t inode_sb_list_lock; |
| 108 | |
| 109 | /* |
| 110 | * fs-writeback.c |
| 111 | */ |
| 112 | extern void inode_wb_list_del(struct inode *inode); |
| 113 | |
| 114 | extern int get_nr_dirty_inodes(void); |
| 115 | extern void evict_inodes(struct super_block *); |
| 116 | extern int invalidate_inodes(struct super_block *, bool); |
| 117 | |
| 118 | /* |
| 119 | * dcache.c |
| 120 | */ |
| 121 | extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); |