- add signalfd()

2 files changed, 40 insertions, 2 deletions

diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
index d9c3116e9..521e561fd 100644
--- a/libc/sysdeps/linux/common/Makefile.in
+++ b/libc/sysdeps/linux/common/Makefile.in
@@ -34,8 +34,8 @@ CSRC := $(filter-out inotify.c ioperm.c iopl.c madvise.c \
 	modify_ldt.c personality.c prctl.c readahead.c reboot.c \
 	remap_file_pages.c sched_getaffinity.c sched_setaffinity.c \
 	sendfile64.c sendfile.c setfsgid.c setfsuid.c setresuid.c \
-	splice.c vmsplice.c tee.c swapoff.c swapon.c sync_file_range.c \
-	sysctl.c sysinfo.c uselib.c vhangup.c,$(CSRC))
+	splice.c vmsplice.c tee.c signalfd.c swapoff.c swapon.c \
+	sync_file_range.c sysctl.c sysinfo.c uselib.c vhangup.c,$(CSRC))
 endif
 
 ifneq ($(UCLIBC_BSD_SPECIFIC),y)
diff --git a/libc/sysdeps/linux/common/signalfd.c b/libc/sysdeps/linux/common/signalfd.c
new file mode 100644
index 000000000..e134a6fa9
--- /dev/null
+++ b/libc/sysdeps/linux/common/signalfd.c
@@ -0,0 +1,38 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * signalfd() for uClibc
+ *
+ * Copyright (C) 2008 Bernhard Reutner-Fischer <uclibc@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <signal.h>
+#include <sys/signalfd.h>
+
+#if defined __NR_signalfd4
+#define __NR___syscall_signalfd4 __NR_signalfd4
+static __inline__ _syscall4(int, __syscall_signalfd4, int, fd,
+		const sigset_t *, mask, size_t, sizemask, int, flags);
+#elif defined __NR_signalfd
+#define __NR___syscall_signalfd __NR_signalfd4
+static __inline__ _syscall3(int, __syscall_signalfd, int, fd,
+		const sigset_t *, mask, size_t, sizemask);
+#endif
+
+int signalfd (int fd, const sigset_t *mask, int flags)
+{
+#if defined __NR___syscall_signalfd4
+	return __syscall_signalfd4(fd, mask, _NSIG / 8, flags);
+#elif defined __NR___syscall_signalfd
+	if (flags != 0) {
+		__set_errno(EINVAL);
+		return 1;
+	}
+	return __syscall_signalfd(fd, mask, _NSIG / 8);
+#elif defined __UCLIBC_HAS_STUBS__
+	__set_errno(ENOSYS);
+	return -1;
+#endif
+}