From 5dcb9c01dc2ff54b9a67d4109dff1621eac3db7e Mon Sep 17 00:00:00 2001
From: Lubos Dolezel <lubos@dolezel.info>
Date: Wed, 26 Feb 2020 17:16:44 +0100
Subject: [PATCH] Implement sys_sigpending

---
 src/kernel/emulation/linux/CMakeLists.txt     |  1 +
 .../emulation/linux/signal/sigpending.c       | 22 +++++++++++++++++++
 .../emulation/linux/signal/sigpending.h       |  8 +++++++
 src/kernel/emulation/linux/syscalls.c         |  2 ++
 4 files changed, 33 insertions(+)
 create mode 100644 src/kernel/emulation/linux/signal/sigpending.c
 create mode 100644 src/kernel/emulation/linux/signal/sigpending.h

diff --git a/src/kernel/emulation/linux/CMakeLists.txt b/src/kernel/emulation/linux/CMakeLists.txt
index 8efd41e4a..896fc93a6 100644
--- a/src/kernel/emulation/linux/CMakeLists.txt
+++ b/src/kernel/emulation/linux/CMakeLists.txt
@@ -147,6 +147,7 @@ set(emulation_sources
 	signal/sigprocmask.c
 	signal/sig_restorer.S
 	signal/sigsuspend.c
+	signal/sigpending.c
 	signal/sigexc.c
 	signal/sigwait.c
 	misc/ptrace.c
diff --git a/src/kernel/emulation/linux/signal/sigpending.c b/src/kernel/emulation/linux/signal/sigpending.c
new file mode 100644
index 000000000..0f9bcd38c
--- /dev/null
+++ b/src/kernel/emulation/linux/signal/sigpending.c
@@ -0,0 +1,22 @@
+#include "sigpending.h"
+#include "../base.h"
+#include "../errno.h"
+#include "duct_signals.h"
+#include <stddef.h>
+#include <linux-syscalls/linux.h>
+
+long sys_sigpending(sigset_t set)
+{
+	linux_sigset_t set_linux;
+	int ret;
+
+	sigset_bsd_to_linux(&set, &set_linux);
+
+	ret = LINUX_SYSCALL(__NR_rt_sigpending, &set_linux, 8);
+
+	if (ret < 0)
+		ret = errno_linux_to_bsd(ret);
+
+	return ret;
+}
+
diff --git a/src/kernel/emulation/linux/signal/sigpending.h b/src/kernel/emulation/linux/signal/sigpending.h
new file mode 100644
index 000000000..733a55667
--- /dev/null
+++ b/src/kernel/emulation/linux/signal/sigpending.h
@@ -0,0 +1,8 @@
+#ifndef LINUX_SIGPENDING_H
+#define LINUX_SIGPENDING_H
+#include "duct_signals.h"
+
+long sys_sigpending(sigset_t set);
+
+#endif
+
diff --git a/src/kernel/emulation/linux/syscalls.c b/src/kernel/emulation/linux/syscalls.c
index 8f727163f..3f08323dc 100644
--- a/src/kernel/emulation/linux/syscalls.c
+++ b/src/kernel/emulation/linux/syscalls.c
@@ -94,6 +94,7 @@
 #include "signal/sigreturn.h"
 #include "signal/sigprocmask.h"
 #include "signal/sigsuspend.h"
+#include "signal/sigpending.h"
 #include "signal/sigwait.h"
 #include "process/vfork.h"
 #include "process/wait4.h"
@@ -244,6 +245,7 @@ void* __bsd_syscall_table[600] = {
 	[48] = sys_sigprocmask,
 	[49] = sys_getlogin,
 	[50] = sys_setlogin,
+	[52] = sys_sigpending,
 	[53] = sys_sigaltstack,
 	[54] = sys_ioctl,
 	[55] = sys_reboot,
-- 
2.51.2