cregit-Linux how code gets into the kernel

Release 4.7 crypto/lzo.c

Directory: crypto
/*
 * Cryptographic API.
 *
 * 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/mm.h>
#include <linux/lzo.h>


struct lzo_ctx {
	
void *lzo_comp_mem;
};


static int lzo_init(struct crypto_tfm *tfm) { struct lzo_ctx *ctx = crypto_tfm_ctx(tfm); ctx->lzo_comp_mem = kmalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL | __GFP_NOWARN); if (!ctx->lzo_comp_mem) ctx->lzo_comp_mem = vmalloc(LZO1X_MEM_COMPRESS); if (!ctx->lzo_comp_mem) return -ENOMEM; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
zoltan sogorzoltan sogor4468.75%150.00%
eric dumazeteric dumazet2031.25%150.00%
Total64100.00%2100.00%


static void lzo_exit(struct crypto_tfm *tfm) { struct lzo_ctx *ctx = crypto_tfm_ctx(tfm); kvfree(ctx->lzo_comp_mem); }

Contributors

PersonTokensPropCommitsCommitProp
zoltan sogorzoltan sogor2175.00%133.33%
eric dumazeteric dumazet725.00%266.67%
Total28100.00%3100.00%


static int lzo_compress(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { struct lzo_ctx *ctx = crypto_tfm_ctx(tfm); size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */ int err; err = lzo1x_1_compress(src, slen, dst, &tmp_len, ctx->lzo_comp_mem); if (err != LZO_E_OK) return -EINVAL; *dlen = tmp_len; return 0; }

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PersonTokensPropCommitsCommitProp
zoltan sogorzoltan sogor85100.00%1100.00%
Total85100.00%1100.00%


static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { int err; size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */ err = lzo1x_decompress_safe(src, slen, dst, &tmp_len); if (err != LZO_E_OK) return -EINVAL; *dlen = tmp_len; return 0; }

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PersonTokensPropCommitsCommitProp
zoltan sogorzoltan sogor71100.00%1100.00%
Total71100.00%1100.00%

static struct crypto_alg alg = { .cra_name = "lzo", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, .cra_ctxsize = sizeof(struct lzo_ctx), .cra_module = THIS_MODULE, .cra_init = lzo_init, .cra_exit = lzo_exit, .cra_u = { .compress = { .coa_compress = lzo_compress, .coa_decompress = lzo_decompress } } };
static int __init lzo_mod_init(void) { return crypto_register_alg(&alg); }

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PersonTokensPropCommitsCommitProp
zoltan sogorzoltan sogor1593.75%150.00%
kamalesh babulalkamalesh babulal16.25%150.00%
Total16100.00%2100.00%


static void __exit lzo_mod_fini(void) { crypto_unregister_alg(&alg); }

Contributors

PersonTokensPropCommitsCommitProp
zoltan sogorzoltan sogor1493.33%150.00%
kamalesh babulalkamalesh babulal16.67%150.00%
Total15100.00%2100.00%

module_init(lzo_mod_init); module_exit(lzo_mod_fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("LZO Compression Algorithm"); MODULE_ALIAS_CRYPTO("lzo");

Overall Contributors

PersonTokensPropCommitsCommitProp
zoltan sogorzoltan sogor35490.08%120.00%
eric dumazeteric dumazet307.63%240.00%
kees cookkees cook51.27%120.00%
kamalesh babulalkamalesh babulal41.02%120.00%
Total393100.00%5100.00%
Directory: crypto
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