1#include <sys/timerfd.h> 2#include <errno.h> 3#include "syscall.h" 4 5#define IS32BIT(x) !((x)+0x80000000ULL>>32) 6 7int timerfd_create(int clockid, int flags) 8{ 9 return syscall(SYS_timerfd_create, clockid, flags); 10} 11 12int 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 40int 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