oprofilefs.c File Reference

#include <linux/init.h>
#include <linux/module.h>
#include <linux/oprofile.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <asm/uaccess.h>
#include "oprof.h"

Go to the source code of this file.

Macros
#define	OPROFILEFS_MAGIC   0x6f70726f
#define	TMPBUFSIZE   50

Functions
	DEFINE_RAW_SPINLOCK (oprofilefs_lock)
ssize_t	oprofilefs_str_to_user (char const *str, char __user *buf, size_t count, loff_t *offset)
ssize_t	oprofilefs_ulong_to_user (unsigned long val, char __user *buf, size_t count, loff_t *offset)
int	oprofilefs_ulong_from_user (unsigned long *val, char const __user *buf, size_t count)
int	oprofilefs_create_ulong (struct super_block *sb, struct dentry *root, char const *name, unsigned long *val)
int	oprofilefs_create_ro_ulong (struct super_block *sb, struct dentry *root, char const *name, unsigned long *val)
int	oprofilefs_create_ro_atomic (struct super_block *sb, struct dentry *root, char const *name, atomic_t *val)
int	oprofilefs_create_file (struct super_block *sb, struct dentry *root, char const *name, const struct file_operations *fops)
int	oprofilefs_create_file_perm (struct super_block *sb, struct dentry *root, char const *name, const struct file_operations *fops, int perm)
struct dentry *	oprofilefs_mkdir (struct super_block *sb, struct dentry *root, char const *name)
int __init	oprofilefs_register (void)
void __exit	oprofilefs_unregister (void)

Detailed Description

Remarks

Copyright 2002 OProfile authors

Read the file COPYING

Author

John Levon

A simple filesystem for configuration and access of oprofile.

Definition in file oprofilefs.c.

Macro Definition Documentation

#define OPROFILEFS_MAGIC   0x6f70726f

Definition at line 22 of file oprofilefs.c.

#define TMPBUFSIZE   50

Definition at line 51 of file oprofilefs.c.

Function Documentation

DEFINE_RAW_SPINLOCK

(

oprofilefs_lock

)

int oprofilefs_create_file	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		const struct file_operations *	fops
	)

Create a file of the given name as a child of the given root, with the specified file operations.

Definition at line 195 of file oprofilefs.c.

int oprofilefs_create_file_perm	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		const struct file_operations *	fops,
		int	perm
	)

Definition at line 202 of file oprofilefs.c.

int oprofilefs_create_ro_atomic	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		atomic_t *	val
	)

Create a file for read-only access to an atomic_t.

Definition at line 187 of file oprofilefs.c.

int oprofilefs_create_ro_ulong	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		ulong *	val
	)

Create a file for read-only access to an unsigned long.

Definition at line 165 of file oprofilefs.c.

int oprofilefs_create_ulong	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		ulong *	val
	)

Create a file for read/write access to an unsigned long.

Definition at line 157 of file oprofilefs.c.

struct dentry* oprofilefs_mkdir ( struct super_block *  sb, struct dentry *  root, char const *  name  )

read

create a directory

Definition at line 209 of file oprofilefs.c.

int __init oprofilefs_register

(

void

)

Definition at line 271 of file oprofilefs.c.

ssize_t oprofilefs_str_to_user	(	char const *	str,
		char __user *	buf,
		size_t	count,
		loff_t *	offset
	)

Write the given asciz string to the given user buffer , updating *offset appropriately. Returns bytes written or -EFAULT.

Definition at line 45 of file oprofilefs.c.

int oprofilefs_ulong_from_user	(	unsigned long *	val,
		char const __user *	buf,
		size_t	count
	)

Read an ASCII string for a number from a userspace buffer and fill *val on success. Returns 0 on success, < 0 on error.

Definition at line 70 of file oprofilefs.c.

ssize_t oprofilefs_ulong_to_user	(	unsigned long	val,
		char __user *	buf,
		size_t	count,
		loff_t *	offset
	)

Convert an unsigned long value into ASCII and copy it to the user buffer , updating *offset appropriately. Returns bytes written or -EFAULT.

Definition at line 53 of file oprofilefs.c.

void __exit oprofilefs_unregister

(

void

)

Definition at line 277 of file oprofilefs.c.