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
  20 struct vmalloc_info {
  21         unsigned long   used;
  22         unsigned long   largest_chunk;
  23 };
  24
  25 #ifdef CONFIG_MMU
  26 #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
  27 extern void get_vmalloc_info(struct vmalloc_info *vmi);
  28 #else
  29
  30 #define VMALLOC_TOTAL 0UL
  31 #define get_vmalloc_info(vmi)                   \
  32 do {                                            \
  33         (vmi)->used = 0;                        \
  34         (vmi)->largest_chunk = 0;               \
  35 } while(0)
  36
  37 extern int nommu_vma_show(struct seq_file *, struct vm_area_struct *);
  38 #endif
  39
  40 extern int maps_protect;
  41
  42 extern void create_seq_entry(char *name, mode_t mode, const struct file_operations *f);
  43 extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
  44 extern int proc_tid_stat(struct task_struct *,  char *);
  45 extern int proc_tgid_stat(struct task_struct *, char *);
  46 extern int proc_pid_status(struct task_struct *, char *);
  47 extern int proc_pid_statm(struct task_struct *, char *);
  48
  49 extern const struct file_operations proc_maps_operations;
  50 extern const struct file_operations proc_numa_maps_operations;
  51 extern const struct file_operations proc_smaps_operations;
  52
  53 extern const struct file_operations proc_maps_operations;
  54 extern const struct file_operations proc_numa_maps_operations;
  55 extern const struct file_operations proc_smaps_operations;
  56
  57
  58 void free_proc_entry(struct proc_dir_entry *de);
  59
  60 int proc_init_inodecache(void);
  61
  62 static inline struct pid *proc_pid(struct inode *inode)
  63 {
  64         return PROC_I(inode)->pid;
  65 }
  66
  67 static inline struct task_struct *get_proc_task(struct inode *inode)
  68 {
  69         return get_pid_task(proc_pid(inode), PIDTYPE_PID);
  70 }
  71
  72 static inline int proc_fd(struct inode *inode)
  73 {
  74         return PROC_I(inode)->fd;
  75 }