fs/proc/internal.h

   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
  45 extern int nommu_vma_show(struct seq_file *, struct vm_area_struct *);
  46 #endif
  47
  48 extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
  49                                 struct pid *pid, struct task_struct *task);
  50 extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
  51                                 struct pid *pid, struct task_struct *task);
  52 extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
  53                                 struct pid *pid, struct task_struct *task);
  54 extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
  55                                 struct pid *pid, struct task_struct *task);
  56 extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
  57
  58 extern const struct file_operations proc_maps_operations;
  59 extern const struct file_operations proc_numa_maps_operations;
  60 extern const struct file_operations proc_smaps_operations;
  61 extern const struct file_operations proc_clear_refs_operations;
  62 extern const struct file_operations proc_pagemap_operations;
  63 extern const struct file_operations proc_net_operations;
  64 extern const struct inode_operations proc_net_inode_operations;
  65
  66 void free_proc_entry(struct proc_dir_entry *de);
  67
  68 void proc_init_inodecache(void);
  69
  70 static inline struct pid *proc_pid(struct inode *inode)
  71 {
  72         return PROC_I(inode)->pid;
  73 }
  74
  75 static inline struct task_struct *get_proc_task(struct inode *inode)
  76 {
  77         return get_pid_task(proc_pid(inode), PIDTYPE_PID);
  78 }
  79
  80 static inline int proc_fd(struct inode *inode)
  81 {
  82         return PROC_I(inode)->fd;
  83 }
  84
  85 struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
  86                 struct dentry *dentry);
  87 int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
  88                 filldir_t filldir);
  89
  90 struct pde_opener {
  91         struct inode *inode;
  92         struct file *file;
  93         int (*release)(struct inode *, struct file *);
  94         struct list_head lh;
  95 };