Contributors: 12
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Zoltan Sogor |
235 |
57.18% |
1 |
7.14% |
| Giovanni Cabiddu |
137 |
33.33% |
1 |
7.14% |
| James Morris |
11 |
2.68% |
2 |
14.29% |
| Eric Dumazet |
6 |
1.46% |
1 |
7.14% |
| Ard Biesheuvel |
5 |
1.22% |
1 |
7.14% |
| Kees Cook |
5 |
1.22% |
1 |
7.14% |
| Kamalesh Babulal |
4 |
0.97% |
1 |
7.14% |
| Herbert Xu |
2 |
0.49% |
2 |
14.29% |
| Harald Welte |
2 |
0.49% |
1 |
7.14% |
| Thomas Gleixner |
2 |
0.49% |
1 |
7.14% |
| Michal Hocko |
1 |
0.24% |
1 |
7.14% |
| Eric Biggers |
1 |
0.24% |
1 |
7.14% |
| Total |
411 |
|
14 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Cryptographic API.
*/
#include <crypto/internal/scompress.h>
#include <linux/init.h>
#include <linux/lzo.h>
#include <linux/module.h>
#include <linux/slab.h>
struct lzo_ctx {
void *lzo_comp_mem;
};
static void *lzo_alloc_ctx(void)
{
void *ctx;
ctx = kvmalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL);
if (!ctx)
return ERR_PTR(-ENOMEM);
return ctx;
}
static void lzo_free_ctx(void *ctx)
{
kvfree(ctx);
}
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_safe(src, slen, dst, &tmp_len, ctx);
if (err != LZO_E_OK)
return -EINVAL;
*dlen = tmp_len;
return 0;
}
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);
}
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;
}
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);
}
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)
{
return crypto_register_scomp(&scomp);
}
static void __exit lzo_mod_fini(void)
{
crypto_unregister_scomp(&scomp);
}
subsys_initcall(lzo_mod_init);
module_exit(lzo_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZO Compression Algorithm");
MODULE_ALIAS_CRYPTO("lzo");