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