| 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 linux_binprm; |
| 15 | struct path; |
| 16 | struct mount; |
| 17 | |
| 18 | /* |
| 19 | * block_dev.c |
| 20 | */ |
| 21 | #ifdef CONFIG_BLOCK |
| 22 | extern void __init bdev_cache_init(void); |
| 23 | |
| 24 | extern int __sync_blockdev(struct block_device *bdev, int wait); |
| 25 | |
| 26 | #else |
| 27 | static inline void bdev_cache_init(void) |
| 28 | { |
| 29 | } |
| 30 | |
| 31 | static inline int __sync_blockdev(struct block_device *bdev, int wait) |
| 32 | { |
| 33 | return 0; |
| 34 | } |
| 35 | #endif |
| 36 | |
| 37 | /* |
| 38 | * char_dev.c |
| 39 | */ |
| 40 | extern void __init chrdev_init(void); |
| 41 | |
| 42 | /* |
| 43 | * namei.c |
| 44 | */ |
| 45 | extern int __inode_permission(struct inode *, int); |
| 46 | extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *); |
| 47 | extern int vfs_path_lookup(struct dentry *, struct vfsmount *, |
| 48 | const char *, unsigned int, struct path *); |
| 49 | |
| 50 | /* |
| 51 | * namespace.c |
| 52 | */ |
| 53 | extern int copy_mount_options(const void __user *, unsigned long *); |
| 54 | extern int copy_mount_string(const void __user *, char **); |
| 55 | |
| 56 | extern struct vfsmount *lookup_mnt(struct path *); |
| 57 | extern int finish_automount(struct vfsmount *, struct path *); |
| 58 | |
| 59 | extern int sb_prepare_remount_readonly(struct super_block *); |
| 60 | |
| 61 | extern void __init mnt_init(void); |
| 62 | |
| 63 | extern int __mnt_want_write(struct vfsmount *); |
| 64 | extern int __mnt_want_write_file(struct file *); |
| 65 | extern void __mnt_drop_write(struct vfsmount *); |
| 66 | extern void __mnt_drop_write_file(struct file *); |
| 67 | |
| 68 | /* |
| 69 | * fs_struct.c |
| 70 | */ |
| 71 | extern void chroot_fs_refs(const struct path *, const struct path *); |
| 72 | |
| 73 | /* |
| 74 | * file_table.c |
| 75 | */ |
| 76 | extern struct file *get_empty_filp(void); |
| 77 | |
| 78 | /* |
| 79 | * super.c |
| 80 | */ |
| 81 | extern int do_remount_sb(struct super_block *, int, void *, int); |
| 82 | extern bool grab_super_passive(struct super_block *sb); |
| 83 | extern struct dentry *mount_fs(struct file_system_type *, |
| 84 | int, const char *, void *); |
| 85 | extern struct super_block *user_get_super(dev_t); |
| 86 | |
| 87 | /* |
| 88 | * open.c |
| 89 | */ |
| 90 | struct open_flags { |
| 91 | int open_flag; |
| 92 | umode_t mode; |
| 93 | int acc_mode; |
| 94 | int intent; |
| 95 | int lookup_flags; |
| 96 | }; |
| 97 | extern struct file *do_filp_open(int dfd, struct filename *pathname, |
| 98 | const struct open_flags *op); |
| 99 | extern struct file *do_file_open_root(struct dentry *, struct vfsmount *, |
| 100 | const char *, const struct open_flags *); |
| 101 | |
| 102 | extern long do_handle_open(int mountdirfd, |
| 103 | struct file_handle __user *ufh, int open_flag); |
| 104 | extern int open_check_o_direct(struct file *f); |
| 105 | |
| 106 | /* |
| 107 | * inode.c |
| 108 | */ |
| 109 | extern spinlock_t inode_sb_list_lock; |
| 110 | extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan, |
| 111 | int nid); |
| 112 | extern void inode_add_lru(struct inode *inode); |
| 113 | |
| 114 | /* |
| 115 | * fs-writeback.c |
| 116 | */ |
| 117 | extern void inode_wb_list_del(struct inode *inode); |
| 118 | |
| 119 | extern long get_nr_dirty_inodes(void); |
| 120 | extern void evict_inodes(struct super_block *); |
| 121 | extern int invalidate_inodes(struct super_block *, bool); |
| 122 | |
| 123 | /* |
| 124 | * dcache.c |
| 125 | */ |
| 126 | extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); |
| 127 | extern int d_set_mounted(struct dentry *dentry); |
| 128 | extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan, |
| 129 | int nid); |
| 130 | |
| 131 | /* |
| 132 | * read_write.c |
| 133 | */ |
| 134 | extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *); |
| 135 | extern int rw_verify_area(int, struct file *, const loff_t *, size_t); |
| 136 | |
| 137 | /* |
| 138 | * splice.c |
| 139 | */ |
| 140 | extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, |
| 141 | loff_t *opos, size_t len, unsigned int flags); |
| 142 | |
| 143 | /* |
| 144 | * pipe.c |
| 145 | */ |
| 146 | extern const struct file_operations pipefifo_fops; |