__CLASS_CREATE(9) Device drivers infrastructure __CLASS_CREATE(9)NAME
__class_create - create a struct class structure
SYNOPSIS
struct class * __class_create(struct module * owner, const char * name, struct lock_class_key * key);
ARGUMENTS
owner
pointer to the module that is to "own" this struct class
name
pointer to a string for the name of this class.
key
the lock_class_key for this class; used by mutex lock debugging
DESCRIPTION
This is used to create a struct class pointer that can then be used in calls to device_create.
Returns struct class pointer on success, or ERR_PTR on error.
Note, the pointer created here is to be destroyed when finished by making a call to class_destroy.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 __CLASS_CREATE(9)
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DEVICE_CREATE_WITH_G(9) Device drivers infrastructure DEVICE_CREATE_WITH_G(9)NAME
device_create_with_groups - creates a device and registers it with sysfs
SYNOPSIS
struct device * device_create_with_groups(struct class * class, struct device * parent, dev_t devt, void * drvdata,
const struct attribute_group ** groups, const char * fmt, ...);
ARGUMENTS
class
pointer to the struct class that this device should be registered to
parent
pointer to the parent struct device of this new device, if any
devt
the dev_t for the char device to be added
drvdata
the data to be added to the device for callbacks
groups
NULL-terminated list of attribute groups to be created
fmt
string for the device's name
...
variable arguments
DESCRIPTION
This function can be used by char device classes. A struct device will be created in sysfs, registered to the specified class. Additional
attributes specified in the groups parameter will also be created automatically.
A "dev" file will be created, showing the dev_t for the device, if the dev_t is not 0,0. If a pointer to a parent struct device is passed
in, the newly created struct device will be a child of that device in sysfs. The pointer to the struct device will be returned from the
call. Any further sysfs files that might be required can be created using this pointer.
Returns struct device pointer on success, or ERR_PTR on error.
NOTE
the struct class passed to this function must have previously been created with a call to class_create.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 DEVICE_CREATE_WITH_G(9)
restricted access...
Hi
I need to restrict users shell access to only $HOME under /home for each user. I don't want them getting out of their own directories. From what I understand chroot is something I could use, but I want to avoid this since it involves creating symbolic links to a number... (9 Replies)
Hi all,
Currently i am involved in developing a device driver for a custom hardware.
My linux stack already has the sysfs directory structure
/sys/class/hwmon/
My need is that, while loading my device driver i need to create a "xyz" sysfs directory inside hwmon sysfs directory as... (0 Replies)
See the following code:
#include<iostream>
using namespace std;
class Uncopyable
{
protected:
Uncopyable(){cout<<"hehe\n";}
~Uncopyable(){}
private:
Uncopyable(const Uncopyable &rhs){cout<<"oooops\n";};
Uncopyable& operator=(const Uncopyable &rhs);
};
class Dog :... (5 Replies)
Hi all!
I am trying to register a device in an existing device class, but I am
having trouble getting the pointer to an existing class.
I can create a class in a module, get the pointer to it and then use
it to register the device with:
*cl = class_create(THIS_MODULE, className);... (0 Replies)