getservbyport_r: fix out-of-bounds buffer read
[musl] / src / time / timer_gettime.c
1 #include <time.h>
2 #include <limits.h>
3 #include "pthread_impl.h"
4
5 int timer_gettime(timer_t t, struct itimerspec *val)
6 {
7         if ((intptr_t)t < 0) {
8                 pthread_t td = (void *)((uintptr_t)t << 1);
9                 t = (void *)(uintptr_t)(td->timer_id & INT_MAX);
10         }
11 #ifdef SYS_timer_gettime64
12         int r = -ENOSYS;
13         if (sizeof(time_t) > 4)
14                 r = __syscall(SYS_timer_gettime64, t, val);
15         if (SYS_timer_gettime == SYS_timer_gettime64 || r!=-ENOSYS)
16                 return __syscall_ret(r);
17         long val32[4];
18         r = __syscall(SYS_timer_gettime, t, val32);
19         if (!r) {
20                 val->it_interval.tv_sec = val32[0];
21                 val->it_interval.tv_nsec = val32[1];
22                 val->it_value.tv_sec = val32[2];
23                 val->it_value.tv_nsec = val32[3];
24         }
25         return __syscall_ret(r);
26 #endif
27         return syscall(SYS_timer_gettime, t, val);
28 }