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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* compress.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "common.h"
static int cmp_ids[] = {
SQFS_COMP_XZ,
SQFS_COMP_ZSTD,
SQFS_COMP_GZIP,
SQFS_COMP_LZ4,
SQFS_COMP_LZO,
};
SQFS_COMPRESSOR compressor_get_default(void)
{
sqfs_compressor_config_t cfg;
sqfs_compressor_t *temp;
size_t i;
int ret;
for (i = 0; i < sizeof(cmp_ids) / sizeof(cmp_ids[0]); ++i) {
sqfs_compressor_config_init(&cfg, cmp_ids[i],
SQFS_DEFAULT_BLOCK_SIZE, 0);
ret = sqfs_compressor_create(&cfg, &temp);
if (ret == 0) {
sqfs_destroy(temp);
return cmp_ids[i];
}
}
#ifdef WITH_LZO
return SQFS_COMP_LZO;
#else
assert(0);
#endif
}
void compressor_print_available(void)
{
sqfs_compressor_config_t cfg;
sqfs_compressor_t *temp;
bool have_compressor;
int i, ret;
fputs("Available compressors:\n", stdout);
for (i = SQFS_COMP_MIN; i <= SQFS_COMP_MAX; ++i) {
sqfs_compressor_config_init(&cfg, i,
SQFS_DEFAULT_BLOCK_SIZE, 0);
ret = sqfs_compressor_create(&cfg, &temp);
have_compressor = false;
if (ret == 0) {
sqfs_destroy(temp);
have_compressor = true;
} else {
#ifdef WITH_LZO
if (i == SQFS_COMP_LZO)
have_compressor = true;
#endif
}
if (have_compressor)
printf("\t%s\n", sqfs_compressor_name_from_id(i));
}
printf("\nDefault compressor: %s\n",
sqfs_compressor_name_from_id(compressor_get_default()));
}
|
