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Commit	Line	Data
	1	/* internal.h: internal procfs definitions
	2	*
	3	* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
	4	* Written by David Howells ([email protected])
	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	struct ctl_table_header;
	14
	15	extern struct proc_dir_entry proc_root;
	16	#ifdef CONFIG_PROC_SYSCTL
	17	extern int proc_sys_init(void);
	18	extern void sysctl_head_put(struct ctl_table_header *head);
	19	#else
	20	static inline void proc_sys_init(void) { }
	21	static inline void sysctl_head_put(struct ctl_table_header *head) { }
	22	#endif
	23	#ifdef CONFIG_NET
	24	extern int proc_net_init(void);
	25	#else
	26	static inline int proc_net_init(void) { return 0; }
	27	#endif
	28
	29	struct vmalloc_info {
	30	unsigned long used;
	31	unsigned long largest_chunk;
	32	};
	33
	34	extern struct mm_struct mm_for_maps(struct task_struct );
	35
	36	#ifdef CONFIG_MMU
	37	#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
	38	extern void get_vmalloc_info(struct vmalloc_info *vmi);
	39	#else
	40
	41	#define VMALLOC_TOTAL 0UL
	42	#define get_vmalloc_info(vmi) \
	43	do { \
	44	(vmi)->used = 0; \
	45	(vmi)->largest_chunk = 0; \
	46	} while(0)
	47	#endif
	48
	49	extern int proc_tid_stat(struct seq_file m, struct pid_namespace ns,
	50	struct pid pid, struct task_struct task);
	51	extern int proc_tgid_stat(struct seq_file m, struct pid_namespace ns,
	52	struct pid pid, struct task_struct task);
	53	extern int proc_pid_status(struct seq_file m, struct pid_namespace ns,
	54	struct pid pid, struct task_struct task);
	55	extern int proc_pid_statm(struct seq_file m, struct pid_namespace ns,
	56	struct pid pid, struct task_struct task);
	57	extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
	58
	59	extern const struct file_operations proc_pid_maps_operations;
	60	extern const struct file_operations proc_tid_maps_operations;
	61	extern const struct file_operations proc_pid_numa_maps_operations;
	62	extern const struct file_operations proc_tid_numa_maps_operations;
	63	extern const struct file_operations proc_pid_smaps_operations;
	64	extern const struct file_operations proc_tid_smaps_operations;
	65	extern const struct file_operations proc_clear_refs_operations;
	66	extern const struct file_operations proc_pagemap_operations;
	67	extern const struct file_operations proc_net_operations;
	68	extern const struct inode_operations proc_net_inode_operations;
	69
	70	struct proc_maps_private {
	71	struct pid *pid;
	72	struct task_struct *task;
	73	#ifdef CONFIG_MMU
	74	struct vm_area_struct *tail_vma;
	75	#endif
	76	};
	77
	78	void proc_init_inodecache(void);
	79
	80	static inline struct pid proc_pid(struct inode inode)
	81	{
	82	return PROC_I(inode)->pid;
	83	}
	84
	85	static inline struct task_struct get_proc_task(struct inode inode)
	86	{
	87	return get_pid_task(proc_pid(inode), PIDTYPE_PID);
	88	}
	89
	90	static inline int proc_fd(struct inode *inode)
	91	{
	92	return PROC_I(inode)->fd;
	93	}
	94
	95	struct dentry proc_lookup_de(struct proc_dir_entry de, struct inode *ino,
	96	struct dentry *dentry);
	97	int proc_readdir_de(struct proc_dir_entry de, struct file filp, void *dirent,
	98	filldir_t filldir);
	99
	100	struct pde_opener {
	101	struct inode *inode;
	102	struct file *file;
	103	int (release)(struct inode , struct file *);
	104	struct list_head lh;
	105	};
	106	void pde_users_dec(struct proc_dir_entry *pde);
	107
	108	extern spinlock_t proc_subdir_lock;
	109
	110	struct dentry proc_pid_lookup(struct inode dir, struct dentry * dentry, struct nameidata *);
	111	int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
	112	unsigned long task_vsize(struct mm_struct *);
	113	unsigned long task_statm(struct mm_struct *,
	114	unsigned long , unsigned long , unsigned long , unsigned long );
	115	void task_mem(struct seq_file , struct mm_struct );
	116
	117	static inline struct proc_dir_entry pde_get(struct proc_dir_entry pde)
	118	{
	119	atomic_inc(&pde->count);
	120	return pde;
	121	}
	122	void pde_put(struct proc_dir_entry *pde);
	123
	124	int proc_fill_super(struct super_block *);
	125	struct inode proc_get_inode(struct super_block , struct proc_dir_entry *);
	126	int proc_remount(struct super_block sb, int flags, char *data);
	127
	128	/*
	129	* These are generic /proc routines that use the internal
	130	* "struct proc_dir_entry" tree to traverse the filesystem.
	131	*
	132	* The /proc root directory has extended versions to take care
	133	* of the /proc/<pid> subdirectories.
	134	*/
	135	int proc_readdir(struct file , void , filldir_t);
	136	struct dentry proc_lookup(struct inode , struct dentry , struct nameidata );
	137
	138
	139
	140	/* Lookups */
	141	typedef struct dentry instantiate_t(struct inode , struct dentry *,
	142	struct task_struct , const void );
	143	int proc_fill_cache(struct file filp, void dirent, filldir_t filldir,
	144	const char *name, int len,
	145	instantiate_t instantiate, struct task_struct task, const void ptr);
	146	int pid_revalidate(struct dentry dentry, struct nameidata nd);
	147	struct inode proc_pid_make_inode(struct super_block sb, struct task_struct *task);
	148	extern const struct dentry_operations pid_dentry_operations;
	149	int pid_getattr(struct vfsmount mnt, struct dentry dentry, struct kstat *stat);
	150	int proc_setattr(struct dentry dentry, struct iattr attr);
	151
	152	extern const struct inode_operations proc_ns_dir_inode_operations;
	153	extern const struct file_operations proc_ns_dir_operations;
	154