1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/lzo.h>
#include "backend_lzorle.h"
static void *lzorle_create(struct zcomp_params *params)
{
return kzalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL);
}
static void lzorle_destroy(void *ctx)
{
kfree(ctx);
}
static int lzorle_compress(void *ctx, const unsigned char *src, size_t src_len,
unsigned char *dst, size_t *dst_len)
{
int ret;
ret = lzorle1x_1_compress(src, src_len, dst, dst_len, ctx);
return ret == LZO_E_OK ? 0 : ret;
}
static int lzorle_decompress(void *ctx, const unsigned char *src,
size_t src_len, unsigned char *dst,
size_t dst_len)
{
int ret;
ret = lzo1x_decompress_safe(src, src_len, dst, &dst_len);
return ret == LZO_E_OK ? 0 : ret;
}
const struct zcomp_ops backend_lzorle = {
.compress = lzorle_compress,
.decompress = lzorle_decompress,
.create_ctx = lzorle_create,
.destroy_ctx = lzorle_destroy,
.name = "lzo-rle",
};
|
