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TOMOYO Linux Cross Reference
Linux/fs/proc/internal.h

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  1 /* internal.h: internal procfs definitions
  2  *
  3  * Copyright (C) 2004 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/proc_fs.h>
 13 
 14 extern struct proc_dir_entry proc_root;
 15 #ifdef CONFIG_PROC_SYSCTL
 16 extern int proc_sys_init(void);
 17 #else
 18 static inline void proc_sys_init(void) { }
 19 #endif
 20 #ifdef CONFIG_NET
 21 extern int proc_net_init(void);
 22 #else
 23 static inline int proc_net_init(void) { return 0; }
 24 #endif
 25 
 26 struct vmalloc_info {
 27         unsigned long   used;
 28         unsigned long   largest_chunk;
 29 };
 30 
 31 extern struct mm_struct *mm_for_maps(struct task_struct *);
 32 
 33 #ifdef CONFIG_MMU
 34 #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
 35 extern void get_vmalloc_info(struct vmalloc_info *vmi);
 36 #else
 37 
 38 #define VMALLOC_TOTAL 0UL
 39 #define get_vmalloc_info(vmi)                   \
 40 do {                                            \
 41         (vmi)->used = 0;                        \
 42         (vmi)->largest_chunk = 0;               \
 43 } while(0)
 44 #endif
 45 
 46 extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
 47                                 struct pid *pid, struct task_struct *task);
 48 extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
 49                                 struct pid *pid, struct task_struct *task);
 50 extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
 51                                 struct pid *pid, struct task_struct *task);
 52 extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
 53                                 struct pid *pid, struct task_struct *task);
 54 extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
 55 
 56 extern const struct file_operations proc_maps_operations;
 57 extern const struct file_operations proc_numa_maps_operations;
 58 extern const struct file_operations proc_smaps_operations;
 59 extern const struct file_operations proc_clear_refs_operations;
 60 extern const struct file_operations proc_pagemap_operations;
 61 extern const struct file_operations proc_net_operations;
 62 extern const struct inode_operations proc_net_inode_operations;
 63 
 64 void free_proc_entry(struct proc_dir_entry *de);
 65 
 66 void proc_init_inodecache(void);
 67 
 68 static inline struct pid *proc_pid(struct inode *inode)
 69 {
 70         return PROC_I(inode)->pid;
 71 }
 72 
 73 static inline struct task_struct *get_proc_task(struct inode *inode)
 74 {
 75         return get_pid_task(proc_pid(inode), PIDTYPE_PID);
 76 }
 77 
 78 static inline int proc_fd(struct inode *inode)
 79 {
 80         return PROC_I(inode)->fd;
 81 }
 82 
 83 struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
 84                 struct dentry *dentry);
 85 int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
 86                 filldir_t filldir);
 87 
 88 struct pde_opener {
 89         struct inode *inode;
 90         struct file *file;
 91         int (*release)(struct inode *, struct file *);
 92         struct list_head lh;
 93 };
 94 void pde_users_dec(struct proc_dir_entry *pde);
 95 
 96 extern spinlock_t proc_subdir_lock;
 97 
 98 struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *);
 99 int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
100 unsigned long task_vsize(struct mm_struct *);
101 int task_statm(struct mm_struct *, int *, int *, int *, int *);
102 void task_mem(struct seq_file *, struct mm_struct *);
103 
104 struct proc_dir_entry *de_get(struct proc_dir_entry *de);
105 void de_put(struct proc_dir_entry *de);
106 
107 extern struct vfsmount *proc_mnt;
108 int proc_fill_super(struct super_block *);
109 struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *);
110 
111 /*
112  * These are generic /proc routines that use the internal
113  * "struct proc_dir_entry" tree to traverse the filesystem.
114  *
115  * The /proc root directory has extended versions to take care
116  * of the /proc/<pid> subdirectories.
117  */
118 int proc_readdir(struct file *, void *, filldir_t);
119 struct dentry *proc_lookup(struct inode *, struct dentry *, struct nameidata *);
120 

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