[net-next-2.6.git] / crypto / pcompress.c

/*
 * Cryptographic API.
 *
 * Partial (de)compression operations.
 *
 * Copyright 2008 Sony Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.
 * If not, see <http://www.gnu.org/licenses/>.
 */

#include <linux/crypto.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/string.h>

#include <crypto/compress.h>
#include <crypto/internal/compress.h>

#include "internal.h"


static int crypto_pcomp_init(struct crypto_tfm *tfm, u32 type, u32 mask)
{
	return 0;
}

static unsigned int crypto_pcomp_extsize(struct crypto_alg *alg,
					 const struct crypto_type *frontend)
{
	return alg->cra_ctxsize;
}

static int crypto_pcomp_init_tfm(struct crypto_tfm *tfm,
				 const struct crypto_type *frontend)
{
	return 0;
}

static void crypto_pcomp_show(struct seq_file *m, struct crypto_alg *alg)
	__attribute__ ((unused));
static void crypto_pcomp_show(struct seq_file *m, struct crypto_alg *alg)
{
	seq_printf(m, "type         : pcomp\n");
}

static const struct crypto_type crypto_pcomp_type = {
	.extsize	= crypto_pcomp_extsize,
	.init		= crypto_pcomp_init,
	.init_tfm	= crypto_pcomp_init_tfm,
#ifdef CONFIG_PROC_FS
	.show		= crypto_pcomp_show,
#endif
	.maskclear	= ~CRYPTO_ALG_TYPE_MASK,
	.maskset	= CRYPTO_ALG_TYPE_MASK,
	.type		= CRYPTO_ALG_TYPE_PCOMPRESS,
	.tfmsize	= offsetof(struct crypto_pcomp, base),
};

struct crypto_pcomp *crypto_alloc_pcomp(const char *alg_name, u32 type,
					u32 mask)
{
	return crypto_alloc_tfm(alg_name, &crypto_pcomp_type, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_alloc_pcomp);

int crypto_register_pcomp(struct pcomp_alg *alg)
{
	struct crypto_alg *base = &alg->base;

	base->cra_type = &crypto_pcomp_type;
	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
	base->cra_flags |= CRYPTO_ALG_TYPE_PCOMPRESS;

	return crypto_register_alg(base);
}
EXPORT_SYMBOL_GPL(crypto_register_pcomp);

int crypto_unregister_pcomp(struct pcomp_alg *alg)
{
	return crypto_unregister_alg(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_unregister_pcomp);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Partial (de)compression type");
MODULE_AUTHOR("Sony Corporation");
Commit	Line	Data
a1d2f095 GU	1	/*
	2	* Cryptographic API.
	3	*
	4	* Partial (de)compression operations.
	5	*
	6	* Copyright 2008 Sony Corporation
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; version 2 of the License.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program.
	19	* If not, see <http://www.gnu.org/licenses/>.
	20	*/
	21
	22	#include <linux/crypto.h>
	23	#include <linux/errno.h>
	24	#include <linux/module.h>
	25	#include <linux/seq_file.h>
	26	#include <linux/string.h>
	27
	28	#include <crypto/compress.h>
2f6ceb79	29	#include <crypto/internal/compress.h>
a1d2f095 GU	30
	31	#include "internal.h"
	32
	33
	34	static int crypto_pcomp_init(struct crypto_tfm *tfm, u32 type, u32 mask)
	35	{
	36	return 0;
	37	}
	38
	39	static unsigned int crypto_pcomp_extsize(struct crypto_alg *alg,
	40	const struct crypto_type *frontend)
	41	{
	42	return alg->cra_ctxsize;
	43	}
	44
	45	static int crypto_pcomp_init_tfm(struct crypto_tfm *tfm,
	46	const struct crypto_type *frontend)
	47	{
	48	return 0;
	49	}
	50
	51	static void crypto_pcomp_show(struct seq_file m, struct crypto_alg alg)
	52	__attribute__ ((unused));
	53	static void crypto_pcomp_show(struct seq_file m, struct crypto_alg alg)
	54	{
	55	seq_printf(m, "type : pcomp\n");
	56	}
	57
	58	static const struct crypto_type crypto_pcomp_type = {
	59	.extsize = crypto_pcomp_extsize,
	60	.init = crypto_pcomp_init,
	61	.init_tfm = crypto_pcomp_init_tfm,
	62	#ifdef CONFIG_PROC_FS
	63	.show = crypto_pcomp_show,
	64	#endif
	65	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
	66	.maskset = CRYPTO_ALG_TYPE_MASK,
	67	.type = CRYPTO_ALG_TYPE_PCOMPRESS,
	68	.tfmsize = offsetof(struct crypto_pcomp, base),
	69	};
	70
	71	struct crypto_pcomp crypto_alloc_pcomp(const char alg_name, u32 type,
	72	u32 mask)
	73	{
	74	return crypto_alloc_tfm(alg_name, &crypto_pcomp_type, type, mask);
	75	}
	76	EXPORT_SYMBOL_GPL(crypto_alloc_pcomp);
	77
	78	int crypto_register_pcomp(struct pcomp_alg *alg)
	79	{
	80	struct crypto_alg *base = &alg->base;
	81
	82	base->cra_type = &crypto_pcomp_type;
	83	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
	84	base->cra_flags \|= CRYPTO_ALG_TYPE_PCOMPRESS;
	85
	86	return crypto_register_alg(base);
	87	}
	88	EXPORT_SYMBOL_GPL(crypto_register_pcomp);
	89
	90	int crypto_unregister_pcomp(struct pcomp_alg *alg)
	91	{
	92	return crypto_unregister_alg(&alg->base);
	93	}
94	EXPORT_SYMBOL_GPL(crypto_unregister_pcomp);
95
96	MODULE_LICENSE("GPL");
97	MODULE_DESCRIPTION("Partial (de)compression type");
98	MODULE_AUTHOR("Sony Corporation");