X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmq%2Fmq_timedreceive.c;h=f41b6642f822e4d95edc701a4578ddbefce3ab93;hb=8274aaaaa1948c50c661aa32e21b3db27a5c0eab;hp=099f213a40673e947f3f2efa1ea24d988ce9b4e2;hpb=86f8c72bb1cc1fad05e1ed1b2a6f4433defc9cf7;p=musl

diff --git a/src/mq/mq_timedreceive.c b/src/mq/mq_timedreceive.c
index 099f213a..f41b6642 100644
--- a/src/mq/mq_timedreceive.c
+++ b/src/mq/mq_timedreceive.c
@@ -1,7 +1,24 @@
 #include <mqueue.h>
+#include <errno.h>
 #include "syscall.h"
 
-ssize_t mq_timedreceive(mqd_t mqd, char *msg, size_t len, unsigned *prio, const struct timespec *at)
+#define IS32BIT(x) !((x)+0x80000000ULL>>32)
+#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
+
+ssize_t mq_timedreceive(mqd_t mqd, char *restrict msg, size_t len, unsigned *restrict prio, const struct timespec *restrict at)
 {
+#ifdef SYS_mq_timedreceive_time64
+	time_t s = at ? at->tv_sec : 0;
+	long ns = at ? at->tv_nsec : 0;
+	long r = -ENOSYS;
+	if (SYS_mq_timedreceive == SYS_mq_timedreceive_time64 || !IS32BIT(s))
+		r = __syscall_cp(SYS_mq_timedreceive_time64, mqd, msg, len, prio,
+			at ? ((long long []){at->tv_sec, at->tv_nsec}) : 0);
+	if (SYS_mq_timedreceive == SYS_mq_timedreceive_time64 || r != -ENOSYS)
+		return __syscall_ret(r);
+	return syscall_cp(SYS_mq_timedreceive, mqd, msg, len, prio,
+		at ? ((long[]){CLAMP(s), ns}) : 0);
+#else
 	return syscall_cp(SYS_mq_timedreceive, mqd, msg, len, prio, at);
+#endif
 }