diff options
Diffstat (limited to 'crypto/compress.c')
| -rw-r--r-- | crypto/compress.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/crypto/compress.c b/crypto/compress.c new file mode 100644 index 000000000000..eb36d9364da3 --- /dev/null +++ b/crypto/compress.c @@ -0,0 +1,63 @@ +/* + * 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)); +} |