1 files changed, 76 insertions, 0 deletions
diff --git a/include/linux/signalfd.h b/include/linux/signalfd.h
new file mode 100644
index 00000000..247399b2
--- /dev/null
+++ b/include/linux/signalfd.h
@@ -0,0 +1,76 @@
+/*
+ *  include/linux/signalfd.h
+ *
+ *  Copyright (C) 2007  Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#ifndef _LINUX_SIGNALFD_H
+#define _LINUX_SIGNALFD_H
+
+#include <linux/types.h>
+/* For O_CLOEXEC and O_NONBLOCK */
+#include <linux/fcntl.h>
+
+/* Flags for signalfd4.  */
+#define SFD_CLOEXEC O_CLOEXEC
+#define SFD_NONBLOCK O_NONBLOCK
+
+struct signalfd_siginfo {
+	__u32 ssi_signo;
+	__s32 ssi_errno;
+	__s32 ssi_code;
+	__u32 ssi_pid;
+	__u32 ssi_uid;
+	__s32 ssi_fd;
+	__u32 ssi_tid;
+	__u32 ssi_band;
+	__u32 ssi_overrun;
+	__u32 ssi_trapno;
+	__s32 ssi_status;
+	__s32 ssi_int;
+	__u64 ssi_ptr;
+	__u64 ssi_utime;
+	__u64 ssi_stime;
+	__u64 ssi_addr;
+	__u16 ssi_addr_lsb;
+
+	/*
+	 * Pad strcture to 128 bytes. Remember to update the
+	 * pad size when you add new members. We use a fixed
+	 * size structure to avoid compatibility problems with
+	 * future versions, and we leave extra space for additional
+	 * members. We use fixed size members because this strcture
+	 * comes out of a read(2) and we really don't want to have
+	 * a compat on read(2).
+	 */
+	__u8 __pad[46];
+};
+
+
+#ifdef __KERNEL__
+
+#ifdef CONFIG_SIGNALFD
+
+/*
+ * Deliver the signal to listening signalfd.
+ */
+static inline void signalfd_notify(struct task_struct *tsk, int sig)
+{
+	if (unlikely(waitqueue_active(&tsk->sighand->signalfd_wqh)))
+		wake_up(&tsk->sighand->signalfd_wqh);
+}
+
+extern void signalfd_cleanup(struct sighand_struct *sighand);
+
+#else /* CONFIG_SIGNALFD */
+
+static inline void signalfd_notify(struct task_struct *tsk, int sig) { }
+
+static inline void signalfd_cleanup(struct sighand_struct *sighand) { }
+
+#endif /* CONFIG_SIGNALFD */
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_SIGNALFD_H */