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#endif 45 46extern 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); 50extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, 51 struct pid *pid, struct task_struct *task); 52extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, 53 struct pid *pid, struct task_struct *task); 54extern loff_t mem_lseek(struct file *file, loff_t offset, int orig); 55 56extern const struct file_operations proc_maps_operations; 57extern const struct file_operations proc_numa_maps_operations; 58extern const struct file_operations proc_smaps_operations; 59extern const struct file_operations proc_clear_refs_operations; 60extern const struct file_operations proc_pagemap_operations; 61extern const struct file_operations proc_net_operations; 62extern const struct inode_operations proc_net_inode_operations; 63 64void proc_init_inodecache(void); 65 66static inline struct pid *proc_pid(struct inode *inode) 67{ 68 return PROC_I(inode)->pid; 69} 70 71static inline struct task_struct *get_proc_task(struct inode *inode) 72{ 73 return get_pid_task(proc_pid(inode), PIDTYPE_PID); 74} 75 76static inline int proc_fd(struct inode *inode) 77{ 78 return PROC_I(inode)->fd; 79} 80 81struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino, 82 struct dentry *dentry); 83int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent, 84 filldir_t filldir); 85 86struct pde_opener { 87 struct inode *inode; 88 struct file *file; 89 int (*release)(struct inode *, struct file *); 90 struct list_head lh; 91}; 92void pde_users_dec(struct proc_dir_entry *pde); 93 94extern spinlock_t proc_subdir_lock; 95 96struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *); 97int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir); 98unsigned long task_vsize(struct mm_struct *); 99int task_statm(struct mm_struct *, int *, int *, int *, int *); 100void task_mem(struct seq_file *, struct mm_struct *); 101 102static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde) 103{ 104 atomic_inc(&pde->count); 105 return pde; 106} 107void pde_put(struct proc_dir_entry *pde); 108 109extern struct vfsmount *proc_mnt; 110int proc_fill_super(struct super_block *); 111struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *); 112 113/* 114 * These are generic /proc routines that use the internal 115 * "struct proc_dir_entry" tree to traverse the filesystem. 116 * 117 * The /proc root directory has extended versions to take care 118 * of the /proc/<pid> subdirectories. 119 */ 120int proc_readdir(struct file *, void *, filldir_t); 121struct dentry *proc_lookup(struct inode *, struct dentry *, struct nameidata *); 122