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TOMOYO Linux Cross Reference
Linux/fs/internal.h

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  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  * namei.c
 46  */
 47 extern int __inode_permission(struct inode *, int);
 48 extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
 49 extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
 50                            const char *, unsigned int, struct path *);
 51 
 52 /*
 53  * namespace.c
 54  */
 55 extern int copy_mount_options(const void __user *, unsigned long *);
 56 extern char *copy_mount_string(const void __user *);
 57 
 58 extern struct vfsmount *lookup_mnt(struct path *);
 59 extern int finish_automount(struct vfsmount *, struct path *);
 60 
 61 extern int sb_prepare_remount_readonly(struct super_block *);
 62 
 63 extern void __init mnt_init(void);
 64 
 65 extern struct lglock vfsmount_lock;
 66 
 67 extern int __mnt_want_write(struct vfsmount *);
 68 extern int __mnt_want_write_file(struct file *);
 69 extern void __mnt_drop_write(struct vfsmount *);
 70 extern void __mnt_drop_write_file(struct file *);
 71 
 72 /*
 73  * fs_struct.c
 74  */
 75 extern void chroot_fs_refs(const struct path *, const struct path *);
 76 
 77 /*
 78  * file_table.c
 79  */
 80 extern struct file *get_empty_filp(void);
 81 
 82 /*
 83  * super.c
 84  */
 85 extern int do_remount_sb(struct super_block *, int, void *, int);
 86 extern bool grab_super_passive(struct super_block *sb);
 87 extern struct dentry *mount_fs(struct file_system_type *,
 88                                int, const char *, void *);
 89 extern struct super_block *user_get_super(dev_t);
 90 
 91 /*
 92  * open.c
 93  */
 94 struct open_flags {
 95         int open_flag;
 96         umode_t mode;
 97         int acc_mode;
 98         int intent;
 99         int lookup_flags;
100 };
101 extern struct file *do_filp_open(int dfd, struct filename *pathname,
102                 const struct open_flags *op);
103 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
104                 const char *, const struct open_flags *);
105 
106 extern long do_handle_open(int mountdirfd,
107                            struct file_handle __user *ufh, int open_flag);
108 extern int open_check_o_direct(struct file *f);
109 
110 /*
111  * inode.c
112  */
113 extern spinlock_t inode_sb_list_lock;
114 extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan,
115                             int nid);
116 extern void inode_add_lru(struct inode *inode);
117 
118 /*
119  * fs-writeback.c
120  */
121 extern void inode_wb_list_del(struct inode *inode);
122 
123 extern long get_nr_dirty_inodes(void);
124 extern void evict_inodes(struct super_block *);
125 extern int invalidate_inodes(struct super_block *, bool);
126 
127 /*
128  * dcache.c
129  */
130 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
131 extern int d_set_mounted(struct dentry *dentry);
132 extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,
133                             int nid);
134 
135 /*
136  * read_write.c
137  */
138 extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
139 extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
140 
141 /*
142  * splice.c
143  */
144 extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
145                 loff_t *opos, size_t len, unsigned int flags);
146 
147 /*
148  * pipe.c
149  */
150 extern const struct file_operations pipefifo_fops;
151 

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