cregit-Linux how code gets into the kernel

Release 4.8 crypto/lz4.c

Directory: crypto
/*
 * Cryptographic API.
 *
 * Copyright (c) 2013 Chanho Min <chanho.min@lge.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * 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, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 *
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/crypto.h>
#include <linux/vmalloc.h>
#include <linux/lz4.h>


struct lz4_ctx {
	
void *lz4_comp_mem;
};


static int lz4_init(struct crypto_tfm *tfm) { struct lz4_ctx *ctx = crypto_tfm_ctx(tfm); ctx->lz4_comp_mem = vmalloc(LZ4_MEM_COMPRESS); if (!ctx->lz4_comp_mem) return -ENOMEM; return 0; }

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chanho minchanho min44100.00%1100.00%
Total44100.00%1100.00%


static void lz4_exit(struct crypto_tfm *tfm) { struct lz4_ctx *ctx = crypto_tfm_ctx(tfm); vfree(ctx->lz4_comp_mem); }

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chanho minchanho min28100.00%1100.00%
Total28100.00%1100.00%


static int lz4_compress_crypto(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { struct lz4_ctx *ctx = crypto_tfm_ctx(tfm); size_t tmp_len = *dlen; int err; err = lz4_compress(src, slen, dst, &tmp_len, ctx->lz4_comp_mem); if (err < 0) return -EINVAL; *dlen = tmp_len; return 0; }

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chanho minchanho min84100.00%1100.00%
Total84100.00%1100.00%


static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { int err; size_t tmp_len = *dlen; size_t __slen = slen; err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len); if (err < 0) return -EINVAL; *dlen = tmp_len; return err; }

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chanho minchanho min7397.33%150.00%
kovacs krisztiankovacs krisztian22.67%150.00%
Total75100.00%2100.00%

static struct crypto_alg alg_lz4 = { .cra_name = "lz4", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, .cra_ctxsize = sizeof(struct lz4_ctx), .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT(alg_lz4.cra_list), .cra_init = lz4_init, .cra_exit = lz4_exit, .cra_u = { .compress = { .coa_compress = lz4_compress_crypto, .coa_decompress = lz4_decompress_crypto } } };
static int __init lz4_mod_init(void) { return crypto_register_alg(&alg_lz4); }

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chanho minchanho min16100.00%1100.00%
Total16100.00%1100.00%


static void __exit lz4_mod_fini(void) { crypto_unregister_alg(&alg_lz4); }

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chanho minchanho min15100.00%1100.00%
Total15100.00%1100.00%

module_init(lz4_mod_init); module_exit(lz4_mod_fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("LZ4 Compression Algorithm"); MODULE_ALIAS_CRYPTO("lz4");

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chanho minchanho min37698.17%133.33%
kees cookkees cook51.31%133.33%
kovacs krisztiankovacs krisztian20.52%133.33%
Total383100.00%3100.00%
Directory: crypto
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