From 69d03cb4e2a8f22a0f59cc32448b2d5dddd039ff Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Thu, 7 Oct 2021 13:31:31 +0300
Subject: [PATCH] Linux does not have SIGINFO

---
 cmd/godlighty/info.go       | 8 ++++++++
 cmd/godlighty/info_linux.go | 8 ++++++++
 cmd/godlighty/main.go       | 2 +-
 doc/index.texi              | 3 ++-
 4 files changed, 19 insertions(+), 2 deletions(-)
 create mode 100644 cmd/godlighty/info.go
 create mode 100644 cmd/godlighty/info_linux.go

diff --git a/cmd/godlighty/info.go b/cmd/godlighty/info.go
new file mode 100644
index 0000000..fc3e8c1
--- /dev/null
+++ b/cmd/godlighty/info.go
@@ -0,0 +1,8 @@
+//go:build !linux
+// +build !linux
+
+package main
+
+import "syscall"
+
+var InfoSignal = syscall.SIGINFO
diff --git a/cmd/godlighty/info_linux.go b/cmd/godlighty/info_linux.go
new file mode 100644
index 0000000..386d6b3
--- /dev/null
+++ b/cmd/godlighty/info_linux.go
@@ -0,0 +1,8 @@
+//go:build linux
+// +build linux
+
+package main
+
+import "syscall"
+
+var InfoSignal = syscall.SIGUSR1
diff --git a/cmd/godlighty/main.go b/cmd/godlighty/main.go
index e15c165..1344aaa 100644
--- a/cmd/godlighty/main.go
+++ b/cmd/godlighty/main.go
@@ -96,7 +96,7 @@ func main() {
 	}
 
 	info := make(chan os.Signal)
-	signal.Notify(info, syscall.SIGINFO)
+	signal.Notify(info, InfoSignal)
 	go func() {
 		for {
 			<-info
diff --git a/doc/index.texi b/doc/index.texi
index 9265d5e..2b86584 100644
--- a/doc/index.texi
+++ b/doc/index.texi
@@ -61,7 +61,8 @@ have to recompile it every time configuration changes. Is it a problem?
 I doubt, because Go is very fast. But it produces huge statically linked
 executables, you say! Use @command{bsdiff}/@command{bspatch}!
 
-Send @code{SIGINFO} signal to get current daemon's configuration.
+Send @code{SIGINFO} (@code{SIGUSR1} on Linux) signal to get current
+daemon's configuration.
 
 Initially @command{godlighty} has basic static files handlers (with
 compression, HTTP preconditions are enabled of course). In the example
-- 
2.44.0