1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
|
|
* Cryptographic API.
|
|
*
|
|
* Compression operations.
|
|
*
|
|
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
|
|
*
|
|
* 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; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/errno.h>
|
|
#include <asm/scatterlist.h>
|
|
#include <linux/string.h>
|
|
#include "internal.h"
|
|
|
|
static int crypto_compress(struct crypto_tfm *tfm,
|
|
const u8 *src, unsigned int slen,
|
|
u8 *dst, unsigned int *dlen)
|
|
{
|
|
return tfm->__crt_alg->cra_compress.coa_compress(crypto_tfm_ctx(tfm),
|
|
src, slen, dst,
|
|
dlen);
|
|
}
|
|
|
|
static int crypto_decompress(struct crypto_tfm *tfm,
|
|
const u8 *src, unsigned int slen,
|
|
u8 *dst, unsigned int *dlen)
|
|
{
|
|
return tfm->__crt_alg->cra_compress.coa_decompress(crypto_tfm_ctx(tfm),
|
|
src, slen, dst,
|
|
dlen);
|
|
}
|
|
|
|
int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags)
|
|
{
|
|
return flags ? -EINVAL : 0;
|
|
}
|
|
|
|
int crypto_init_compress_ops(struct crypto_tfm *tfm)
|
|
{
|
|
int ret = 0;
|
|
struct compress_tfm *ops = &tfm->crt_compress;
|
|
|
|
ret = tfm->__crt_alg->cra_compress.coa_init(crypto_tfm_ctx(tfm));
|
|
if (ret)
|
|
goto out;
|
|
|
|
ops->cot_compress = crypto_compress;
|
|
ops->cot_decompress = crypto_decompress;
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
void crypto_exit_compress_ops(struct crypto_tfm *tfm)
|
|
{
|
|
tfm->__crt_alg->cra_compress.coa_exit(crypto_tfm_ctx(tfm));
|
|
}
|