| | 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 | struct super_block; |
| | 13 | struct file_system_type; |
| | 14 | struct iomap; |
| | 15 | struct linux_binprm; |
| | 16 | struct path; |
| | 17 | struct mount; |
| | 18 | struct shrink_control; |
| | 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 | * buffer.c |
| | 41 | */ |
| | 42 | extern void guard_bio_eod(int rw, struct bio *bio); |
| | 43 | extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len, |
| | 44 | get_block_t *get_block, struct iomap *iomap); |
| | 45 | |
| | 46 | /* |
| | 47 | * char_dev.c |
| | 48 | */ |
| | 49 | extern void __init chrdev_init(void); |
| | 50 | |
| | 51 | /* |
| | 52 | * namei.c |
| | 53 | */ |
| | 54 | extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *); |
| | 55 | extern int vfs_path_lookup(struct dentry *, struct vfsmount *, |
| | 56 | const char *, unsigned int, struct path *); |
| | 57 | |
| | 58 | /* |
| | 59 | * namespace.c |
| | 60 | */ |
| | 61 | extern void *copy_mount_options(const void __user *); |
| | 62 | extern char *copy_mount_string(const void __user *); |
| | 63 | |
| | 64 | extern struct vfsmount *lookup_mnt(struct path *); |
| | 65 | extern int finish_automount(struct vfsmount *, struct path *); |
| | 66 | |
| | 67 | extern int sb_prepare_remount_readonly(struct super_block *); |
| | 68 | |
| | 69 | extern void __init mnt_init(void); |
| | 70 | |
| | 71 | extern int __mnt_want_write(struct vfsmount *); |
| | 72 | extern int __mnt_want_write_file(struct file *); |
| | 73 | extern void __mnt_drop_write(struct vfsmount *); |
| | 74 | extern void __mnt_drop_write_file(struct file *); |
| | 75 | |
| | 76 | /* |
| | 77 | * fs_struct.c |
| | 78 | */ |
| | 79 | extern void chroot_fs_refs(const struct path *, const struct path *); |
| | 80 | |
| | 81 | /* |
| | 82 | * file_table.c |
| | 83 | */ |
| | 84 | extern struct file *get_empty_filp(void); |
| | 85 | |
| | 86 | /* |
| | 87 | * super.c |
| | 88 | */ |
| | 89 | extern int do_remount_sb(struct super_block *, int, void *, int); |
| | 90 | extern bool trylock_super(struct super_block *sb); |
| | 91 | extern struct dentry *mount_fs(struct file_system_type *, |
| | 92 | int, const char *, void *); |
| | 93 | extern struct super_block *user_get_super(dev_t); |
| | 94 | |
| | 95 | /* |
| | 96 | * open.c |
| | 97 | */ |
| | 98 | struct open_flags { |
| | 99 | int open_flag; |
| | 100 | umode_t mode; |
| | 101 | int acc_mode; |
| | 102 | int intent; |
| | 103 | int lookup_flags; |
| | 104 | }; |
| | 105 | extern struct file *do_filp_open(int dfd, struct filename *pathname, |
| | 106 | const struct open_flags *op); |
| | 107 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, |
| | 108 | const char *, const struct open_flags *); |
| | 109 | |
| | 110 | extern long do_handle_open(int mountdirfd, |
| | 111 | struct file_handle __user *ufh, int open_flag); |
| | 112 | extern int open_check_o_direct(struct file *f); |
| | 113 | extern int vfs_open(const struct path *, struct file *, const struct cred *); |
| | 114 | extern struct file *filp_clone_open(struct file *); |
| | 115 | |
| | 116 | /* |
| | 117 | * inode.c |
| | 118 | */ |
| | 119 | extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc); |
| | 120 | extern void inode_add_lru(struct inode *inode); |
| | 121 | extern int dentry_needs_remove_privs(struct dentry *dentry); |
| | 122 | |
| | 123 | /* |
| | 124 | * fs-writeback.c |
| | 125 | */ |
| | 126 | extern void inode_io_list_del(struct inode *inode); |
| | 127 | |
| | 128 | extern long get_nr_dirty_inodes(void); |
| | 129 | extern void evict_inodes(struct super_block *); |
| | 130 | extern int invalidate_inodes(struct super_block *, bool); |
| | 131 | |
| | 132 | /* |
| | 133 | * dcache.c |
| | 134 | */ |
| | 135 | extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); |
| | 136 | extern int d_set_mounted(struct dentry *dentry); |
| | 137 | extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc); |
| | 138 | extern struct dentry *d_alloc_cursor(struct dentry *); |
| | 139 | |
| | 140 | /* |
| | 141 | * read_write.c |
| | 142 | */ |
| | 143 | extern int rw_verify_area(int, struct file *, const loff_t *, size_t); |
| | 144 | |
| | 145 | /* |
| | 146 | * pipe.c |
| | 147 | */ |
| | 148 | extern const struct file_operations pipefifo_fops; |
| | 149 | |
| | 150 | /* |
| | 151 | * fs_pin.c |
| | 152 | */ |
| | 153 | extern void group_pin_kill(struct hlist_head *p); |
| | 154 | extern void mnt_pin_kill(struct mount *m); |
| | 155 | |
| | 156 | /* |
| | 157 | * fs/nsfs.c |
| | 158 | */ |
| | 159 | extern struct dentry_operations ns_dentry_operations; |
| | 160 | |
| | 161 | /* |
| | 162 | * fs/ioctl.c |
| | 163 | */ |
| | 164 | extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd, |
| | 165 | unsigned long arg); |
| | 166 | extern long vfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
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