4 * Partial (de)compression operations.
6 * Copyright 2008 Sony Corporation
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.
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.
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/>.
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 #include <linux/cryptouser.h>
28 #include <net/netlink.h>
30 #include <crypto/compress.h>
31 #include <crypto/internal/compress.h>
36 static int crypto_pcomp_init(struct crypto_tfm
*tfm
, u32 type
, u32 mask
)
41 static unsigned int crypto_pcomp_extsize(struct crypto_alg
*alg
)
43 return alg
->cra_ctxsize
;
46 static int crypto_pcomp_init_tfm(struct crypto_tfm
*tfm
)
52 static int crypto_pcomp_report(struct sk_buff
*skb
, struct crypto_alg
*alg
)
54 struct crypto_report_comp rpcomp
;
56 snprintf(rpcomp
.type
, CRYPTO_MAX_ALG_NAME
, "%s", "pcomp");
58 NLA_PUT(skb
, CRYPTOCFGA_REPORT_COMPRESS
,
59 sizeof(struct crypto_report_comp
), &rpcomp
);
67 static int crypto_pcomp_report(struct sk_buff
*skb
, struct crypto_alg
*alg
)
73 static void crypto_pcomp_show(struct seq_file
*m
, struct crypto_alg
*alg
)
74 __attribute__ ((unused
));
75 static void crypto_pcomp_show(struct seq_file
*m
, struct crypto_alg
*alg
)
77 seq_printf(m
, "type : pcomp\n");
80 static const struct crypto_type crypto_pcomp_type
= {
81 .extsize
= crypto_pcomp_extsize
,
82 .init
= crypto_pcomp_init
,
83 .init_tfm
= crypto_pcomp_init_tfm
,
85 .show
= crypto_pcomp_show
,
87 .report
= crypto_pcomp_report
,
88 .maskclear
= ~CRYPTO_ALG_TYPE_MASK
,
89 .maskset
= CRYPTO_ALG_TYPE_MASK
,
90 .type
= CRYPTO_ALG_TYPE_PCOMPRESS
,
91 .tfmsize
= offsetof(struct crypto_pcomp
, base
),
94 struct crypto_pcomp
*crypto_alloc_pcomp(const char *alg_name
, u32 type
,
97 return crypto_alloc_tfm(alg_name
, &crypto_pcomp_type
, type
, mask
);
99 EXPORT_SYMBOL_GPL(crypto_alloc_pcomp
);
101 int crypto_register_pcomp(struct pcomp_alg
*alg
)
103 struct crypto_alg
*base
= &alg
->base
;
105 base
->cra_type
= &crypto_pcomp_type
;
106 base
->cra_flags
&= ~CRYPTO_ALG_TYPE_MASK
;
107 base
->cra_flags
|= CRYPTO_ALG_TYPE_PCOMPRESS
;
109 return crypto_register_alg(base
);
111 EXPORT_SYMBOL_GPL(crypto_register_pcomp
);
113 int crypto_unregister_pcomp(struct pcomp_alg
*alg
)
115 return crypto_unregister_alg(&alg
->base
);
117 EXPORT_SYMBOL_GPL(crypto_unregister_pcomp
);
119 MODULE_LICENSE("GPL");
120 MODULE_DESCRIPTION("Partial (de)compression type");
121 MODULE_AUTHOR("Sony Corporation");