| /* |
| * 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"); |