1 #include <sys/timerfd.h>
2 #include <errno.h>
3 #include "syscall.h"
4
5 #define IS32BIT(x) !((x)+0x80000000ULL>>32)
6
timerfd_create(int clockid,int flags)7 int timerfd_create(int clockid, int flags)
8 {
9 return syscall(SYS_timerfd_create, clockid, flags);
10 }
11
timerfd_settime(int fd,int flags,const struct itimerspec * new,struct itimerspec * old)12 int timerfd_settime(int fd, int flags, const struct itimerspec *new, struct itimerspec *old)
13 {
14 #ifdef SYS_timerfd_settime64
15 time_t is = new->it_interval.tv_sec, vs = new->it_value.tv_sec;
16 long ins = new->it_interval.tv_nsec, vns = new->it_value.tv_nsec;
17 int r = -ENOSYS;
18 if (SYS_timerfd_settime == SYS_timerfd_settime64
19 || !IS32BIT(is) || !IS32BIT(vs) || (sizeof(time_t)>4 && old))
20 r = __syscall(SYS_timerfd_settime64, fd, flags,
21 ((long long[]){is, ins, vs, vns}), old);
22 if (SYS_timerfd_settime == SYS_timerfd_settime64 || r!=-ENOSYS)
23 return __syscall_ret(r);
24 if (!IS32BIT(is) || !IS32BIT(vs))
25 return __syscall_ret(-ENOTSUP);
26 long old32[4];
27 r = __syscall(SYS_timerfd_settime, fd, flags,
28 ((long[]){is, ins, vs, vns}), old32);
29 if (!r && old) {
30 old->it_interval.tv_sec = old32[0];
31 old->it_interval.tv_nsec = old32[1];
32 old->it_value.tv_sec = old32[2];
33 old->it_value.tv_nsec = old32[3];
34 }
35 return __syscall_ret(r);
36 #endif
37 return syscall(SYS_timerfd_settime, fd, flags, new, old);
38 }
39
timerfd_gettime(int fd,struct itimerspec * cur)40 int timerfd_gettime(int fd, struct itimerspec *cur)
41 {
42 #ifdef SYS_timerfd_gettime64
43 int r = -ENOSYS;
44 if (sizeof(time_t) > 4)
45 r = __syscall(SYS_timerfd_gettime64, fd, cur);
46 if (SYS_timerfd_gettime == SYS_timerfd_gettime64 || r!=-ENOSYS)
47 return __syscall_ret(r);
48 long cur32[4];
49 r = __syscall(SYS_timerfd_gettime, fd, cur32);
50 if (!r) {
51 cur->it_interval.tv_sec = cur32[0];
52 cur->it_interval.tv_nsec = cur32[1];
53 cur->it_value.tv_sec = cur32[2];
54 cur->it_value.tv_nsec = cur32[3];
55 }
56 return __syscall_ret(r);
57 #endif
58 return syscall(SYS_timerfd_gettime, fd, cur);
59 }
60