/*
 * The proc filesystem constants/structures
 */
#ifndef _LINUX_PROC_FS_H
#define _LINUX_PROC_FS_H

#include <linux/types.h>
#include <linux/fs.h>

struct proc_dir_entry {
	unsigned int low_ino;
	umode_t mode;
	nlink_t nlink;
	kuid_t uid;
	kgid_t gid;
	loff_t size;
	const struct inode_operations *proc_iops;
	const struct file_operations *proc_fops;
	struct proc_dir_entry *next, *parent, *subdir;
	void *data;
	atomic_t count;		/* use count */
	atomic_t in_use;	/* number of callers into module in progress; */
			/* negative -> it's going away RSN */
	struct completion *pde_unload_completion;
	struct list_head pde_openers;	/* who did ->open, but not ->release */
	spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */
	u8 namelen;
	int access;
	char name[];
};


#ifdef CONFIG_PROC_FS

extern void proc_root_init(void);
extern void proc_flush_task(struct task_struct *);

extern struct proc_dir_entry *proc_symlink_mode(const char *name, umode_t mode,
			struct proc_dir_entry *parent, const char *dest);
static inline struct proc_dir_entry *proc_symlink(const char *name,
			struct proc_dir_entry *parent, const char *dest)
{
	return proc_symlink_mode(name, S_IRWXUGO, parent, dest);
}
extern struct proc_dir_entry *proc_mkdir(const char *, struct proc_dir_entry *);
extern struct proc_dir_entry *proc_mkdir_data(const char *, umode_t,
					      struct proc_dir_entry *, void *);
extern struct proc_dir_entry *proc_mkdir_mode(const char *, umode_t,
					      struct proc_dir_entry *);
 
extern struct proc_dir_entry *proc_create_data(const char *, umode_t,
					       struct proc_dir_entry *,
					       const struct file_operations *,
					       void *);
extern struct proc_dir_entry *proc_net_create_data(const char *name,
				umode_t mode, struct proc_dir_entry *parent,
				const struct file_operations *fops, void *data);

static inline struct proc_dir_entry *proc_create(
	const char *name, umode_t mode, struct proc_dir_entry *parent,
	const struct file_operations *proc_fops)
{
	return proc_create_data(name, mode, parent, proc_fops, NULL);
}

extern void proc_set_size(struct proc_dir_entry *, loff_t);
extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
extern void *PDE_DATA(const struct inode *);
extern void *proc_get_parent_data(const struct inode *);
extern void proc_remove(struct proc_dir_entry *);
extern void remove_proc_entry(const char *, struct proc_dir_entry *);
extern int remove_proc_subtree(const char *, struct proc_dir_entry *);

#else /* CONFIG_PROC_FS */

static inline void proc_flush_task(struct task_struct *task)
{
}

static inline struct proc_dir_entry *proc_symlink(const char *name,
		struct proc_dir_entry *parent,const char *dest) { return NULL;}
static inline struct proc_dir_entry *proc_symlink_mode(const char *name,
	umode_t m, struct proc_dir_entry *p, const char *d) { return NULL; }
static inline struct proc_dir_entry *proc_mkdir(const char *name,
	struct proc_dir_entry *parent) {return NULL;}
static inline struct proc_dir_entry *proc_mkdir_data(const char *name,
	umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }
static inline struct proc_dir_entry *proc_mkdir_mode(const char *name,
	umode_t mode, struct proc_dir_entry *parent) { return NULL; }
#define proc_create(name, mode, parent, proc_fops) ({NULL;})
#define proc_create_data(name, mode, parent, proc_fops, data) ({NULL;})

static inline void proc_set_size(struct proc_dir_entry *de, loff_t size) {}
static inline void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid) {}
static inline void *PDE_DATA(const struct inode *inode) {BUG(); return NULL;}
static inline void *proc_get_parent_data(const struct inode *inode) { BUG(); return NULL; }

static inline void proc_remove(struct proc_dir_entry *de) {}
#define remove_proc_entry(name, parent) do {} while (0)
static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *parent) { return 0; }

#endif /* CONFIG_PROC_FS */

struct net;

static inline struct proc_dir_entry *proc_net_mkdir(
	struct net *net, const char *name, struct proc_dir_entry *parent)
{
	return proc_mkdir_data(name, S_ISGID|S_IRUGO|S_IXUGO, parent, net);
}

#endif /* _LINUX_PROC_FS_H */