Release 4.11 crypto/lzo.c
/*
* 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>
#include <crypto/internal/scompress.h>
struct lzo_ctx {
void *lzo_comp_mem;
};
static void *lzo_alloc_ctx(struct crypto_scomp *tfm)
{
void *ctx;
ctx = kmalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL | __GFP_NOWARN);
if (!ctx)
ctx = vmalloc(LZO1X_MEM_COMPRESS);
if (!ctx)
return ERR_PTR(-ENOMEM);
return ctx;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Zoltan Sogor | 21 | 38.89% | 1 | 33.33% |
| Giovanni Cabiddu | 17 | 31.48% | 1 | 33.33% |
| Eric Dumazet | 16 | 29.63% | 1 | 33.33% |
| Total | 54 | 100.00% | 3 | 100.00% |
static int lzo_init(struct crypto_tfm *tfm)
{
struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
ctx->lzo_comp_mem = lzo_alloc_ctx(NULL);
if (IS_ERR(ctx->lzo_comp_mem))
return -ENOMEM;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Giovanni Cabiddu | 35 | 76.09% | 1 | 50.00% |
| Zoltan Sogor | 11 | 23.91% | 1 | 50.00% |
| Total | 46 | 100.00% | 2 | 100.00% |
static void lzo_free_ctx(struct crypto_scomp *tfm, void *ctx)
{
kvfree(ctx);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Giovanni Cabiddu | 20 | 100.00% | 1 | 100.00% |
| Total | 20 | 100.00% | 1 | 100.00% |
static void lzo_exit(struct crypto_tfm *tfm)
{
struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
lzo_free_ctx(NULL, ctx->lzo_comp_mem);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Zoltan Sogor | 21 | 70.00% | 1 | 33.33% |
| Eric Dumazet | 6 | 20.00% | 1 | 33.33% |
| Giovanni Cabiddu | 3 | 10.00% | 1 | 33.33% |
| Total | 30 | 100.00% | 3 | 100.00% |
static int __lzo_compress(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */
int err;
err = lzo1x_1_compress(src, slen, dst, &tmp_len, ctx);
if (err != LZO_E_OK)
return -EINVAL;
*dlen = tmp_len;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Zoltan Sogor | 67 | 93.06% | 1 | 50.00% |
| Giovanni Cabiddu | 5 | 6.94% | 1 | 50.00% |
| Total | 72 | 100.00% | 2 | 100.00% |
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);
return __lzo_compress(src, slen, dst, dlen, ctx->lzo_comp_mem);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Giovanni Cabiddu | 28 | 50.91% | 1 | 50.00% |
| Zoltan Sogor | 27 | 49.09% | 1 | 50.00% |
| Total | 55 | 100.00% | 2 | 100.00% |
static int lzo_scompress(struct crypto_scomp *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen,
void *ctx)
{
return __lzo_compress(src, slen, dst, dlen, ctx);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Giovanni Cabiddu | 47 | 100.00% | 1 | 100.00% |
| Total | 47 | 100.00% | 1 | 100.00% |
static int __lzo_decompress(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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Zoltan Sogor | 43 | 65.15% | 1 | 50.00% |
| Giovanni Cabiddu | 23 | 34.85% | 1 | 50.00% |
| Total | 66 | 100.00% | 2 | 100.00% |
static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen)
{
return __lzo_decompress(src, slen, dst, dlen);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Giovanni Cabiddu | 41 | 100.00% | 1 | 100.00% |
| Total | 41 | 100.00% | 1 | 100.00% |
static int lzo_sdecompress(struct crypto_scomp *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen,
void *ctx)
{
return __lzo_decompress(src, slen, dst, dlen);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Giovanni Cabiddu | 45 | 100.00% | 1 | 100.00% |
| Total | 45 | 100.00% | 1 | 100.00% |
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 struct scomp_alg scomp = {
.alloc_ctx = lzo_alloc_ctx,
.free_ctx = lzo_free_ctx,
.compress = lzo_scompress,
.decompress = lzo_sdecompress,
.base = {
.cra_name = "lzo",
.cra_driver_name = "lzo-scomp",
.cra_module = THIS_MODULE,
}
};
static int __init lzo_mod_init(void)
{
int ret;
ret = crypto_register_alg(&alg);
if (ret)
return ret;
ret = crypto_register_scomp(&scomp);
if (ret) {
crypto_unregister_alg(&alg);
return ret;
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Giovanni Cabiddu | 38 | 71.70% | 1 | 33.33% |
| Zoltan Sogor | 14 | 26.42% | 1 | 33.33% |
| Kamalesh Babulal | 1 | 1.89% | 1 | 33.33% |
| Total | 53 | 100.00% | 3 | 100.00% |
static void __exit lzo_mod_fini(void)
{
crypto_unregister_alg(&alg);
crypto_unregister_scomp(&scomp);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Zoltan Sogor | 14 | 66.67% | 1 | 33.33% |
| Giovanni Cabiddu | 6 | 28.57% | 1 | 33.33% |
| Kamalesh Babulal | 1 | 4.76% | 1 | 33.33% |
| Total | 21 | 100.00% | 3 | 100.00% |
module_init(lzo_mod_init);
module_exit(lzo_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZO Compression Algorithm");
MODULE_ALIAS_CRYPTO("lzo");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Giovanni Cabiddu | 358 | 50.14% | 1 | 20.00% |
| Zoltan Sogor | 322 | 45.10% | 1 | 20.00% |
| Eric Dumazet | 25 | 3.50% | 1 | 20.00% |
| Kees Cook | 5 | 0.70% | 1 | 20.00% |
| Kamalesh Babulal | 4 | 0.56% | 1 | 20.00% |
| Total | 714 | 100.00% | 5 | 100.00% |
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