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-rw-r--r--src/network/recvmmsg.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/network/recvmmsg.c b/src/network/recvmmsg.c
index 58b1b2f6..1dc67932 100644
--- a/src/network/recvmmsg.c
+++ b/src/network/recvmmsg.c
@@ -1,8 +1,13 @@
#define _GNU_SOURCE
#include <sys/socket.h>
#include <limits.h>
+#include <errno.h>
+#include <time.h>
#include "syscall.h"
+#define IS32BIT(x) !((x)+0x80000000ULL>>32)
+#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
+
int recvmmsg(int fd, struct mmsghdr *msgvec, unsigned int vlen, unsigned int flags, struct timespec *timeout)
{
#if LONG_MAX > INT_MAX
@@ -11,5 +16,18 @@ int recvmmsg(int fd, struct mmsghdr *msgvec, unsigned int vlen, unsigned int fla
for (i = vlen; i; i--, mh++)
mh->msg_hdr.__pad1 = mh->msg_hdr.__pad2 = 0;
#endif
+#ifdef SYS_recvmmsg_time64
+ time_t s = timeout ? timeout->tv_sec : 0;
+ long ns = timeout ? timeout->tv_nsec : 0;
+ int r = -ENOSYS;
+ if (SYS_recvmmsg == SYS_recvmmsg_time64 || !IS32BIT(s))
+ r = __syscall_cp(SYS_recvmmsg_time64, fd, msgvec, vlen, flags,
+ ((long long[]){s, ns}));
+ if (SYS_recvmmsg == SYS_recvmmsg_time64 || r!=-ENOSYS)
+ return __syscall_ret(r);
+ return syscall_cp(SYS_recvmmsg, fd, msgvec, vlen, flags,
+ timeout ? ((long[]){CLAMP(s), ns}) : 0);
+#else
return syscall_cp(SYS_recvmmsg, fd, msgvec, vlen, flags, timeout);
+#endif
}