97 lines
2.5 KiB
C
97 lines
2.5 KiB
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)
|
|
{
|
|
return alg->cra_ctxsize;
|
|
}
|
|
|
|
static int crypto_pcomp_init_tfm(struct crypto_tfm *tfm)
|
|
{
|
|
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");
|