From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/linux/signalfd.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/linux/signalfd.c

(limited to 'src/linux/signalfd.c')

diff --git a/src/linux/signalfd.c b/src/linux/signalfd.c
new file mode 100644
index 0000000..4bf4332
--- /dev/null
+++ b/src/linux/signalfd.c
@@ -0,0 +1,21 @@
+#include <sys/signalfd.h>
+#include <signal.h>
+#include <errno.h>
+#include <fcntl.h>
+#include "syscall.h"
+
+int signalfd(int fd, const sigset_t *sigs, int flags)
+{
+	int ret = __syscall(SYS_signalfd4, fd, sigs, _NSIG/8, flags);
+#ifdef SYS_signalfd
+	if (ret != -ENOSYS) return __syscall_ret(ret);
+	ret = __syscall(SYS_signalfd, fd, sigs, _NSIG/8);
+	if (ret >= 0) {
+		if (flags & SFD_CLOEXEC)
+			__syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC);
+		if (flags & SFD_NONBLOCK)
+			__syscall(SYS_fcntl, ret, F_SETFL, O_NONBLOCK);
+	}
+#endif
+	return __syscall_ret(ret);
+}
-- 
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