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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* 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
Alexey Dobriyanc74c1202008-04-29 01:01:44 -070014extern struct proc_dir_entry proc_root;
Andrew Morton05565b62007-04-01 23:49:35 -070015#ifdef CONFIG_PROC_SYSCTL
Eric W. Biederman77b14db2007-02-14 00:34:12 -080016extern int proc_sys_init(void);
Andrew Morton05565b62007-04-01 23:49:35 -070017#else
18static inline void proc_sys_init(void) { }
19#endif
Eric W. Biederman457c4cb2007-09-12 12:01:34 +020020#ifdef CONFIG_NET
21extern int proc_net_init(void);
22#else
23static inline int proc_net_init(void) { return 0; }
24#endif
Eric W. Biederman77b14db2007-02-14 00:34:12 -080025
Linus Torvalds1da177e2005-04-16 15:20:36 -070026struct vmalloc_info {
27 unsigned long used;
28 unsigned long largest_chunk;
29};
30
Al Viro831830b2008-01-02 14:09:57 +000031extern struct mm_struct *mm_for_maps(struct task_struct *);
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#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)
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#endif
45
Eric W. Biedermanee992742008-02-08 04:18:31 -080046extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
47 struct pid *pid, struct task_struct *task);
48extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
49 struct pid *pid, struct task_struct *task);
Eric W. Biedermandf5f8312008-02-08 04:18:33 -080050extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
51 struct pid *pid, struct task_struct *task);
Eric W. Biedermana56d3fc2008-02-08 04:18:32 -080052extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
53 struct pid *pid, struct task_struct *task);
Matt Mackall85863e42008-02-04 22:29:04 -080054extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
Arjan van de Ven00977a52007-02-12 00:55:34 -080056extern const struct file_operations proc_maps_operations;
57extern const struct file_operations proc_numa_maps_operations;
58extern const struct file_operations proc_smaps_operations;
Matt Mackallf248dcb2008-02-04 22:29:03 -080059extern const struct file_operations proc_clear_refs_operations;
Matt Mackall85863e42008-02-04 22:29:04 -080060extern const struct file_operations proc_pagemap_operations;
Pavel Emelyanove9720ac2008-03-07 11:08:40 -080061extern const struct file_operations proc_net_operations;
62extern const struct inode_operations proc_net_inode_operations;
Eric W. Biederman99f89552006-06-26 00:25:55 -070063
Stephen Wilsonf2beb792011-05-24 17:12:48 -070064struct proc_maps_private {
65 struct pid *pid;
66 struct task_struct *task;
67#ifdef CONFIG_MMU
68 struct vm_area_struct *tail_vma;
69#endif
70};
71
Alexey Dobriyan5bcd7ff2008-10-17 03:43:55 +040072void proc_init_inodecache(void);
Adrian Bunkfee781e2006-01-08 01:04:16 -080073
Eric W. Biederman13b41b02006-06-26 00:25:56 -070074static inline struct pid *proc_pid(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070075{
Eric W. Biederman13b41b02006-06-26 00:25:56 -070076 return PROC_I(inode)->pid;
Eric W. Biederman99f89552006-06-26 00:25:55 -070077}
78
79static inline struct task_struct *get_proc_task(struct inode *inode)
80{
Eric W. Biederman13b41b02006-06-26 00:25:56 -070081 return get_pid_task(proc_pid(inode), PIDTYPE_PID);
Linus Torvalds1da177e2005-04-16 15:20:36 -070082}
83
Eric W. Biedermanaed7a6c2006-06-26 00:25:44 -070084static inline int proc_fd(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070085{
Eric W. Biedermanaed7a6c2006-06-26 00:25:44 -070086 return PROC_I(inode)->fd;
Linus Torvalds1da177e2005-04-16 15:20:36 -070087}
Pavel Emelyanove9720ac2008-03-07 11:08:40 -080088
89struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
90 struct dentry *dentry);
91int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
92 filldir_t filldir);
Alexey Dobriyan881adb82008-07-25 01:48:29 -070093
94struct pde_opener {
95 struct inode *inode;
96 struct file *file;
97 int (*release)(struct inode *, struct file *);
98 struct list_head lh;
99};
Alexey Dobriyan3dec7f52009-02-20 17:04:33 +0300100void pde_users_dec(struct proc_dir_entry *pde);
Al Viro3174c212009-04-07 13:19:18 -0400101
102extern spinlock_t proc_subdir_lock;
103
104struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *);
105int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
106unsigned long task_vsize(struct mm_struct *);
Alexey Dobriyana2ade7b2011-01-12 17:00:32 -0800107unsigned long task_statm(struct mm_struct *,
108 unsigned long *, unsigned long *, unsigned long *, unsigned long *);
Al Viro3174c212009-04-07 13:19:18 -0400109void task_mem(struct seq_file *, struct mm_struct *);
110
Alexey Dobriyan135d5652009-12-15 16:45:39 -0800111static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
112{
113 atomic_inc(&pde->count);
114 return pde;
115}
116void pde_put(struct proc_dir_entry *pde);
Al Viro3174c212009-04-07 13:19:18 -0400117
Al Viro3174c212009-04-07 13:19:18 -0400118int proc_fill_super(struct super_block *);
Alexey Dobriyan6d1b6e42011-01-12 17:00:33 -0800119struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
Vasiliy Kulikov97412952012-01-10 15:11:27 -0800120int proc_remount(struct super_block *sb, int *flags, char *data);
Al Viro3174c212009-04-07 13:19:18 -0400121
122/*
123 * These are generic /proc routines that use the internal
124 * "struct proc_dir_entry" tree to traverse the filesystem.
125 *
126 * The /proc root directory has extended versions to take care
127 * of the /proc/<pid> subdirectories.
128 */
129int proc_readdir(struct file *, void *, filldir_t);
130struct dentry *proc_lookup(struct inode *, struct dentry *, struct nameidata *);
Eric W. Biederman6b4e3062010-03-07 16:41:34 -0800131
132
133
134/* Lookups */
135typedef struct dentry *instantiate_t(struct inode *, struct dentry *,
136 struct task_struct *, const void *);
137int proc_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
138 const char *name, int len,
139 instantiate_t instantiate, struct task_struct *task, const void *ptr);
140int pid_revalidate(struct dentry *dentry, struct nameidata *nd);
141struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task);
142extern const struct dentry_operations pid_dentry_operations;
143int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
144int proc_setattr(struct dentry *dentry, struct iattr *attr);
145
146extern const struct inode_operations proc_ns_dir_inode_operations;
147extern const struct file_operations proc_ns_dir_operations;
148