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
| | #include <sys/timerfd.h>
#include <errno.h>
#include "syscall.h"
#define IS32BIT(x) !((x)+0x80000000ULL>>32)
int timerfd_create(int clockid, int flags)
{
return syscall(SYS_timerfd_create, clockid, flags);
}
int timerfd_settime(int fd, int flags, const struct itimerspec *new, struct itimerspec *old)
{
#ifdef SYS_timerfd_settime64
time_t is = new->it_interval.tv_sec, vs = new->it_value.tv_sec;
long ins = new->it_interval.tv_nsec, vns = new->it_value.tv_nsec;
int r = __syscall(SYS_timerfd_settime64, fd, flags,
((long long[]){is, ins, vs, vns}), old);
if (SYS_timerfd_settime == SYS_timerfd_settime64 || r!=-ENOSYS)
return __syscall_ret(r);
if (!IS32BIT(is) || !IS32BIT(vs))
return __syscall_ret(-ENOTSUP);
long old32[4];
r = __syscall(SYS_timerfd_settime, fd, flags,
((long[]){is, ins, vs, vns}), old32);
if (!r && old) {
old->it_interval.tv_sec = old32[0];
old->it_interval.tv_nsec = old32[1];
old->it_value.tv_sec = old32[2];
old->it_value.tv_nsec = old32[3];
}
return __syscall_ret(r);
#endif
return syscall(SYS_timerfd_settime, fd, flags, new, old);
}
int timerfd_gettime(int fd, struct itimerspec *cur)
{
#ifdef SYS_timerfd_gettime64
int r = __syscall(SYS_timerfd_gettime64, fd, cur);
if (SYS_timerfd_gettime == SYS_timerfd_gettime64 || r!=-ENOSYS)
return __syscall_ret(r);
long cur32[4];
r = __syscall(SYS_timerfd_gettime, fd, cur32);
if (!r) {
cur->it_interval.tv_sec = cur32[0];
cur->it_interval.tv_nsec = cur32[1];
cur->it_value.tv_sec = cur32[2];
cur->it_value.tv_nsec = cur32[3];
}
return __syscall_ret(r);
#endif
return syscall(SYS_timerfd_gettime, fd, cur);
}
|