X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Flinux%2Fppoll.c;h=e614600ab8b721e6b41dc96d589d3365337fbb9a;hb=4554f155dd23a65fcdfd39f1d5af8af55ba37694;hp=9e262477ba93de416a3498f71f6eb2e75a059eec;hpb=ccc7b4c3a17ade90de71e1e0f44deebbffd646e6;p=musl

diff --git a/src/linux/ppoll.c b/src/linux/ppoll.c
index 9e262477..e614600a 100644
--- a/src/linux/ppoll.c
+++ b/src/linux/ppoll.c
@@ -1,10 +1,26 @@
 #define _GNU_SOURCE
 #include <poll.h>
 #include <signal.h>
+#include <errno.h>
 #include "syscall.h"
 
+#define IS32BIT(x) !((x)+0x80000000ULL>>32)
+#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
+
 int ppoll(struct pollfd *fds, nfds_t n, const struct timespec *to, const sigset_t *mask)
 {
+	time_t s = to ? to->tv_sec : 0;
+	long ns = to ? to->tv_nsec : 0;
+#ifdef SYS_ppoll_time64
+	int r = -ENOSYS;
+	if (SYS_ppoll == SYS_ppoll_time64 || !IS32BIT(s))
+		r = __syscall_cp(SYS_ppoll_time64, fds, n,
+			to ? ((long long[]){s, ns}) : 0,
+			mask, _NSIG/8);
+	if (SYS_ppoll == SYS_ppoll_time64 || r != -ENOSYS)
+		return __syscall_ret(r);
+	s = CLAMP(s);
+#endif
 	return syscall_cp(SYS_ppoll, fds, n,
-		to ? (struct timespec []){*to} : 0, mask, _NSIG/8);
+		to ? ((long[]){s, ns}) : 0, mask, _NSIG/8);
 }