LXR linux/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
  14extern struct proc_dir_entry proc_root;
  15#ifdef CONFIG_PROC_SYSCTL
  16extern int proc_sys_init(void);
  17#else
  18static inline void proc_sys_init(void) { }
  19#endif
  20#ifdef CONFIG_NET
  21extern int proc_net_init(void);
  22#else
  23static inline int proc_net_init(void) { return 0; }
  24#endif
  25
  26struct vmalloc_info {
  27        unsigned long   used;
  28        unsigned long   largest_chunk;
  29};
  30
  31extern struct mm_struct *mm_for_maps(struct task_struct *);
  32
  33#ifdef CONFIG_MMU
  34#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
  35extern void get_vmalloc_info(struct vmalloc_info *vmi);
  36#else
  37
  38#define VMALLOC_TOTAL 0UL
  39#define get_vmalloc_info(vmi)                   \
  40do {                                            \
  41        (vmi)->used = 0;                        \
  42        (vmi)->largest_chunk = 0;               \
  43} while(0)
  44
  45extern int nommu_vma_show(struct seq_file *, struct vm_area_struct *);
  46#endif
  47
  48extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
  49                                struct pid *pid, struct task_struct *task);
  50extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
  51                                struct pid *pid, struct task_struct *task);
  52extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
  53                                struct pid *pid, struct task_struct *task);
  54extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
  55                                struct pid *pid, struct task_struct *task);
  56extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
  57
  58extern const struct file_operations proc_maps_operations;
  59extern const struct file_operations proc_numa_maps_operations;
  60extern const struct file_operations proc_smaps_operations;
  61extern const struct file_operations proc_clear_refs_operations;
  62extern const struct file_operations proc_pagemap_operations;
  63extern const struct file_operations proc_net_operations;
  64extern const struct inode_operations proc_net_inode_operations;
  65
  66void free_proc_entry(struct proc_dir_entry *de);
  67
  68void proc_init_inodecache(void);
  69
  70static inline struct pid *proc_pid(struct inode *inode)
  71{
  72        return PROC_I(inode)->pid;
  73}
  74
  75static inline struct task_struct *get_proc_task(struct inode *inode)
  76{
  77        return get_pid_task(proc_pid(inode), PIDTYPE_PID);
  78}
  79
  80static inline int proc_fd(struct inode *inode)
  81{
  82        return PROC_I(inode)->fd;
  83}
  84
  85struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
  86                struct dentry *dentry);
  87int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
  88                filldir_t filldir);
  89
  90struct pde_opener {
  91        struct inode *inode;
  92        struct file *file;
  93        int (*release)(struct inode *, struct file *);
  94        struct list_head lh;
  95};
  96