xref: /openbmc/linux/fs/proc/internal.h (revision 643d1f7f)
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, const struct file_operations *f);
50 extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
51 extern int proc_tid_stat(struct task_struct *,  char *);
52 extern int proc_tgid_stat(struct task_struct *, char *);
53 extern int proc_pid_status(struct task_struct *, char *);
54 extern int proc_pid_statm(struct task_struct *, char *);
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 
60 extern const struct file_operations proc_maps_operations;
61 extern const struct file_operations proc_numa_maps_operations;
62 extern const struct file_operations proc_smaps_operations;
63 
64 
65 void free_proc_entry(struct proc_dir_entry *de);
66 
67 int proc_init_inodecache(void);
68 
69 static inline struct pid *proc_pid(struct inode *inode)
70 {
71 	return PROC_I(inode)->pid;
72 }
73 
74 static inline struct task_struct *get_proc_task(struct inode *inode)
75 {
76 	return get_pid_task(proc_pid(inode), PIDTYPE_PID);
77 }
78 
79 static inline int proc_fd(struct inode *inode)
80 {
81 	return PROC_I(inode)->fd;
82 }
83