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 struct vmalloc_info {
  15         unsigned long   used;
  16         unsigned long   largest_chunk;
  17 };
  18
  19 #ifdef CONFIG_MMU
  20 #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
  21 extern void get_vmalloc_info(struct vmalloc_info *vmi);
  22 #else
  23
  24 #define VMALLOC_TOTAL 0UL
  25 #define get_vmalloc_info(vmi)                   \
  26 do {                                            \
  27         (vmi)->used = 0;                        \
  28         (vmi)->largest_chunk = 0;               \
  29 } while(0)
  30
  31 #endif
  32
  33 extern void create_seq_entry(char *name, mode_t mode, const struct file_operations *f);
  34 extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
  35 extern int proc_tid_stat(struct task_struct *,  char *);
  36 extern int proc_tgid_stat(struct task_struct *, char *);
  37 extern int proc_pid_status(struct task_struct *, char *);
  38 extern int proc_pid_statm(struct task_struct *, char *);
  39
  40 extern struct file_operations proc_maps_operations;
  41 extern struct file_operations proc_numa_maps_operations;
  42 extern struct file_operations proc_smaps_operations;
  43
  44 extern struct file_operations proc_maps_operations;
  45 extern struct file_operations proc_numa_maps_operations;
  46 extern struct file_operations proc_smaps_operations;
  47
  48
  49 void free_proc_entry(struct proc_dir_entry *de);
  50
  51 int proc_init_inodecache(void);
  52
  53 static inline struct pid *proc_pid(struct inode *inode)
  54 {
  55         return PROC_I(inode)->pid;
  56 }
  57
  58 static inline struct task_struct *get_proc_task(struct inode *inode)
  59 {
  60         return get_pid_task(proc_pid(inode), PIDTYPE_PID);
  61 }
  62
  63 static inline int proc_fd(struct inode *inode)
  64 {
  65         return PROC_I(inode)->fd;
  66 }