2 #include <sys/socket.h>
8 #define IS32BIT(x) !((x)+0x80000000ULL>>32)
9 #define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
11 int recvmmsg(int fd, struct mmsghdr *msgvec, unsigned int vlen, unsigned int flags, struct timespec *timeout)
13 #if LONG_MAX > INT_MAX
14 struct mmsghdr *mh = msgvec;
16 for (i = vlen; i; i--, mh++)
17 mh->msg_hdr.__pad1 = mh->msg_hdr.__pad2 = 0;
19 #ifdef SYS_recvmmsg_time64
20 time_t s = timeout ? timeout->tv_sec : 0;
21 long ns = timeout ? timeout->tv_nsec : 0;
23 if (SYS_recvmmsg == SYS_recvmmsg_time64 || !IS32BIT(s))
24 r = __syscall_cp(SYS_recvmmsg_time64, fd, msgvec, vlen, flags,
25 timeout ? ((long long[]){s, ns}) : 0);
26 if (SYS_recvmmsg == SYS_recvmmsg_time64 || r!=-ENOSYS)
27 return __syscall_ret(r);
28 return syscall_cp(SYS_recvmmsg, fd, msgvec, vlen, flags,
29 timeout ? ((long[]){CLAMP(s), ns}) : 0);
31 return syscall_cp(SYS_recvmmsg, fd, msgvec, vlen, flags, timeout);