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 #ifdef CONFIG_PROC_SYSCTL
  15 extern int proc_sys_init(void);
  16 #else
  17 static inline void proc_sys_init(void) { }
  18 #endif
  19 #ifdef CONFIG_NET
  20 extern int proc_net_init(void);
  21 #else
  22 static inline int proc_net_init(void) { return 0; }
  23 #endif
  24
  25 struct vmalloc_info {
  26         unsigned long   used;
  27         unsigned long   largest_chunk;
  28 };
  29
  30 extern struct mm_struct *mm_for_maps(struct task_struct *);
  31
  32 #ifdef CONFIG_MMU
  33 #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
  34 extern void get_vmalloc_info(struct vmalloc_info *vmi);
  35 #else
  36
  37 #define VMALLOC_TOTAL 0UL
  38 #define get_vmalloc_info(vmi)                   \
  39 do {                                            \
  40         (vmi)->used = 0;                        \
  41         (vmi)->largest_chunk = 0;               \
  42 } while(0)
  43
  44 extern int nommu_vma_show(struct seq_file *, struct vm_area_struct *);
  45 #endif
  46
  47 extern int maps_protect;
  48
  49 extern void create_seq_entry(char *name, mode_t mode,
  50                                 const struct file_operations *f);
  51 extern int proc_exe_link(struct inode *, struct path *);
  52 extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
  53                                 struct pid *pid, struct task_struct *task);
  54 extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
  55                                 struct pid *pid, struct task_struct *task);
  56 extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
  57                                 struct pid *pid, struct task_struct *task);
  58 extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
  59                                 struct pid *pid, struct task_struct *task);
  60 extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
  61
  62 extern const struct file_operations proc_maps_operations;
  63 extern const struct file_operations proc_numa_maps_operations;
  64 extern const struct file_operations proc_smaps_operations;
  65 extern const struct file_operations proc_clear_refs_operations;
  66 extern const struct file_operations proc_pagemap_operations;
  67
  68 void free_proc_entry(struct proc_dir_entry *de);
  69
  70 int proc_init_inodecache(void);
  71
  72 static inline struct pid *proc_pid(struct inode *inode)
  73 {
  74         return PROC_I(inode)->pid;
  75 }
  76
  77 static inline struct task_struct *get_proc_task(struct inode *inode)
  78 {
  79         return get_pid_task(proc_pid(inode), PIDTYPE_PID);
  80 }
  81
  82 static inline int proc_fd(struct inode *inode)
  83 {
  84         return PROC_I(inode)->fd;
  85 }