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
|
#include "common.h"
char __license[] __section("license") = "GPL-2.0";
/* Special cases requiring feature testing or vDSO magic. */
extern int LINUX_KERNEL_VERSION __kconfig;
extern _Bool LINUX_HAS_SYSCALL_WRAPPER __kconfig;
/* Values pulled from /proc/kconfig. */
extern int CONFIG_HZ __kconfig;
extern enum libbpf_tristate CONFIG_BPF_SYSCALL __kconfig;
extern char CONFIG_DEFAULT_HOSTNAME[1] __kconfig;
__section("socket") int kconfig() {
if (LINUX_KERNEL_VERSION == 0)
return __LINE__;
if (LINUX_HAS_SYSCALL_WRAPPER == 0)
return __LINE__;
if (CONFIG_HZ == 0)
return __LINE__;
if (CONFIG_BPF_SYSCALL == TRI_NO)
return __LINE__;
if (CONFIG_DEFAULT_HOSTNAME[0] == 0)
return __LINE__;
return 0;
}
|
