You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
2.9 KiB
115 lines
2.9 KiB
/* |
|
* 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 <linux/cryptouser.h> |
|
#include <net/netlink.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 int crypto_pcomp_init_tfm(struct crypto_tfm *tfm) |
|
{ |
|
return 0; |
|
} |
|
|
|
#ifdef CONFIG_NET |
|
static int crypto_pcomp_report(struct sk_buff *skb, struct crypto_alg *alg) |
|
{ |
|
struct crypto_report_comp rpcomp; |
|
|
|
strncpy(rpcomp.type, "pcomp", sizeof(rpcomp.type)); |
|
if (nla_put(skb, CRYPTOCFGA_REPORT_COMPRESS, |
|
sizeof(struct crypto_report_comp), &rpcomp)) |
|
goto nla_put_failure; |
|
return 0; |
|
|
|
nla_put_failure: |
|
return -EMSGSIZE; |
|
} |
|
#else |
|
static int crypto_pcomp_report(struct sk_buff *skb, struct crypto_alg *alg) |
|
{ |
|
return -ENOSYS; |
|
} |
|
#endif |
|
|
|
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_alg_extsize, |
|
.init = crypto_pcomp_init, |
|
.init_tfm = crypto_pcomp_init_tfm, |
|
#ifdef CONFIG_PROC_FS |
|
.show = crypto_pcomp_show, |
|
#endif |
|
.report = crypto_pcomp_report, |
|
.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");
|
|
|