X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Fsignal%2Fsigtimedwait.c;h=1287174ebafdf6114c60f1d703745e703cf28a1e;hb=9b132e556774c744f9052581d2d8d0fab417e97c;hp=93f31a713964809cb46f1dfdc3520157881b40e6;hpb=5b9429adb78aeb5e98fa26bd9b2b3eef981e4c52;p=musl

diff --git a/src/signal/sigtimedwait.c b/src/signal/sigtimedwait.c
index 93f31a71..1287174e 100644
--- a/src/signal/sigtimedwait.c
+++ b/src/signal/sigtimedwait.c
@@ -1,15 +1,32 @@
 #include <signal.h>
 #include <errno.h>
 #include "syscall.h"
-#include "libc.h"
 
-int sigtimedwait(const sigset_t *mask, siginfo_t *si, const struct timespec *timeout)
+#define IS32BIT(x) !((x)+0x80000000ULL>>32)
+#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
+
+static int do_sigtimedwait(const sigset_t *restrict mask, siginfo_t *restrict si, const struct timespec *restrict ts)
+{
+#ifdef SYS_rt_sigtimedwait_time64
+	time_t s = ts ? ts->tv_sec : 0;
+	long ns = ts ? ts->tv_nsec : 0;
+	int r = -ENOSYS;
+	if (SYS_rt_sigtimedwait == SYS_rt_sigtimedwait_time64 || !IS32BIT(s))
+		r = __syscall_cp(SYS_rt_sigtimedwait_time64, mask, si,
+			ts ? ((long long[]){s, ns}) : 0, _NSIG/8);
+	if (SYS_rt_sigtimedwait == SYS_rt_sigtimedwait_time64 || r!=-ENOSYS)
+		return r;
+	return __syscall_cp(SYS_rt_sigtimedwait, mask, si,
+		ts ? ((long[]){CLAMP(s), ns}) : 0, _NSIG/8);;
+#else
+	return __syscall_cp(SYS_rt_sigtimedwait, mask, si, ts, _NSIG/8);
+#endif
+}
+
+int sigtimedwait(const sigset_t *restrict mask, siginfo_t *restrict si, const struct timespec *restrict timeout)
 {
 	int ret;
-	CANCELPT_BEGIN;
-	do {
-		ret = syscall4(__NR_rt_sigtimedwait, (long)mask, (long)si, (long)timeout, SYSCALL_SIGSET_SIZE);
-	} while (ret<0 && errno==EINTR);
-	CANCELPT_END;
-	return ret;
+	do ret = do_sigtimedwait(mask, si, timeout);
+	while (ret==-EINTR);
+	return __syscall_ret(ret);
 }