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
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <fcntl.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <unistd.h>
#include "fd-util.h"
#include "macro.h"
#include "mmap-cache.h"
#include "tmpfile-util.h"
#include "util.h"
int main(int argc, char *argv[]) {
MMapFileDescriptor *fx;
int x, y, z, r;
char px[] = "/tmp/testmmapXXXXXXX", py[] = "/tmp/testmmapYXXXXXX", pz[] = "/tmp/testmmapZXXXXXX";
MMapCache *m;
void *p, *q;
assert_se(m = mmap_cache_new());
x = mkostemp_safe(px);
assert_se(x >= 0);
unlink(px);
assert_se(fx = mmap_cache_add_fd(m, x, PROT_READ));
y = mkostemp_safe(py);
assert_se(y >= 0);
unlink(py);
z = mkostemp_safe(pz);
assert_se(z >= 0);
unlink(pz);
r = mmap_cache_fd_get(fx, 0, false, 1, 2, NULL, &p);
assert_se(r >= 0);
r = mmap_cache_fd_get(fx, 0, false, 2, 2, NULL, &q);
assert_se(r >= 0);
assert_se((uint8_t*) p + 1 == (uint8_t*) q);
r = mmap_cache_fd_get(fx, 1, false, 3, 2, NULL, &q);
assert_se(r >= 0);
assert_se((uint8_t*) p + 2 == (uint8_t*) q);
r = mmap_cache_fd_get(fx, 0, false, 16ULL*1024ULL*1024ULL, 2, NULL, &p);
assert_se(r >= 0);
r = mmap_cache_fd_get(fx, 1, false, 16ULL*1024ULL*1024ULL+1, 2, NULL, &q);
assert_se(r >= 0);
assert_se((uint8_t*) p + 1 == (uint8_t*) q);
mmap_cache_fd_free(fx);
mmap_cache_unref(m);
safe_close(x);
safe_close(y);
safe_close(z);
return 0;
}
|
