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Commit a3fb1e33 authored by Dan Kruchinin's avatar Dan Kruchinin Committed by Herbert Xu
Browse files

pcrypt: Added sysfs interface to pcrypt 



Added sysfs interface to pcrypt. Now pcrypt subsystem creates two
sysfs directories with corresponding padata sysfs objects:
 /sys/kernel/pcrypt/[pencrypt|pdecrypt]

Signed-off-by: default avatarDan Kruchinin <dkruchinin@acm.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 5e017dc3

crypto/pcrypt.c

+32 −3
Original line number Diff line number Diff line
@@ -25,9 +25,11 @@ 
#include <linux/module.h>

#include <linux/slab.h>

#include <linux/notifier.h>

#include <linux/kobject.h>

#include <crypto/pcrypt.h>



struct pcrypt_instance {

	const char *name;

	struct padata_instance *pinst;

	struct workqueue_struct *wq;
@@ -55,7 +57,7 @@ struct pcrypt_instance { 


static struct pcrypt_instance pencrypt;

static struct pcrypt_instance pdecrypt;



static struct kset           *pcrypt_kset;



struct pcrypt_instance_ctx {

	struct crypto_spawn spawn;
@@ -429,12 +431,25 @@ static int pcrypt_cpumask_change_notify(struct notifier_block *self, 
	return 0;

}



static int pcrypt_sysfs_add(struct padata_instance *pinst, const char *name)

{

	int ret;



	pinst->kobj.kset = pcrypt_kset;

	ret = kobject_add(&pinst->kobj, NULL, name);

	if (!ret)

		kobject_uevent(&pinst->kobj, KOBJ_ADD);



	return ret;

}



static int __pcrypt_init_instance(struct pcrypt_instance *pcrypt,

				  const char *name)

{

	int ret = -ENOMEM;

	struct pcrypt_cpumask *mask;



	pcrypt->name = name;

	pcrypt->wq = create_workqueue(name);

	if (!pcrypt->wq)

		goto err;
@@ -459,7 +474,13 @@ static int __pcrypt_init_instance(struct pcrypt_instance *pcrypt, 
	if (ret)

		goto err_free_cpumask;



	ret = pcrypt_sysfs_add(pcrypt->pinst, name);

	if (ret)

		goto err_unregister_notifier;



	return ret;

err_unregister_notifier:

	padata_unregister_cpumask_notifier(pcrypt->pinst, &pcrypt->nblock);

err_free_cpumask:

	free_cpumask_var(mask->mask);

	kfree(mask);
@@ -473,6 +494,7 @@ err: 


static void __pcrypt_deinit_instance(struct pcrypt_instance *pcrypt)

{

	kobject_put(&pcrypt->pinst->kobj);

	free_cpumask_var(pcrypt->cb_cpumask->mask);

	kfree(pcrypt->cb_cpumask);
@@ -491,11 +513,15 @@ static struct crypto_template pcrypt_tmpl = { 


static int __init pcrypt_init(void)

{

	int err;

	int err = -ENOMEM;



	pcrypt_kset = kset_create_and_add("pcrypt", NULL, kernel_kobj);

	if (!pcrypt_kset)

		goto err;



	err = __pcrypt_init_instance(&pencrypt, "pencrypt");

	if (err)

		goto err;

		goto err_unreg_kset;



	err = __pcrypt_init_instance(&pdecrypt, "pdecrypt");

	if (err)
@@ -508,6 +534,8 @@ static int __init pcrypt_init(void) 


err_deinit_pencrypt:

	__pcrypt_deinit_instance(&pencrypt);

err_unreg_kset:

	kset_unregister(pcrypt_kset);

err:

	return err;

}
@@ -517,6 +545,7 @@ static void __exit pcrypt_exit(void) 
	__pcrypt_deinit_instance(&pencrypt);

	__pcrypt_deinit_instance(&pdecrypt);



	kset_unregister(pcrypt_kset);

	crypto_unregister_template(&pcrypt_tmpl);

}