blob: 41bcfc957d13c183bf9797e8aa61bd8f22f7ed1f (
plain) (
blame)
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
|
/* SPDX-License-Identifier: MIT */
#ifndef LIBURING_ARCH_AARCH64_LIB_H
#define LIBURING_ARCH_AARCH64_LIB_H
#include <elf.h>
#include "../../syscall.h"
static inline long __get_page_size(void)
{
Elf64_Off buf[2];
long ret = 4096;
int fd;
fd = __sys_open("/proc/self/auxv", O_RDONLY, 0);
if (fd < 0)
return ret;
while (1) {
ssize_t x;
x = __sys_read(fd, buf, sizeof(buf));
if (x < (long) sizeof(buf))
break;
if (buf[0] == AT_PAGESZ) {
ret = buf[1];
break;
}
}
__sys_close(fd);
return ret;
}
static inline long get_page_size(void)
{
static long cache_val;
if (cache_val)
return cache_val;
cache_val = __get_page_size();
return cache_val;
}
#endif /* #ifndef LIBURING_ARCH_AARCH64_LIB_H */
|
