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