1 #include <mqueue.h>
2 #include <errno.h>
3 #include "syscall.h"
4
5 #define IS32BIT(x) !((x)+0x80000000ULL>>32)
6 #define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
7
mq_timedreceive(mqd_t mqd,char * restrict msg,size_t len,unsigned * restrict prio,const struct timespec * restrict at)8 ssize_t mq_timedreceive(mqd_t mqd, char *restrict msg, size_t len, unsigned *restrict prio, const struct timespec *restrict at)
9 {
10 #ifdef SYS_mq_timedreceive_time64
11 time_t s = at ? at->tv_sec : 0;
12 long ns = at ? at->tv_nsec : 0;
13 long r = -ENOSYS;
14 if (SYS_mq_timedreceive == SYS_mq_timedreceive_time64 || !IS32BIT(s))
15 r = __syscall_cp(SYS_mq_timedreceive_time64, mqd, msg, len, prio,
16 at ? ((long long []){at->tv_sec, at->tv_nsec}) : 0);
17 if (SYS_mq_timedreceive == SYS_mq_timedreceive_time64 || r != -ENOSYS)
18 return __syscall_ret(r);
19 return syscall_cp(SYS_mq_timedreceive, mqd, msg, len, prio,
20 at ? ((long[]){CLAMP(s), ns}) : 0);
21 #else
22 return syscall_cp(SYS_mq_timedreceive, mqd, msg, len, prio, at);
23 #endif
24 }
25