Merging upstream version 1.47.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/src/go/logger/journal_linux.go b/src/go/logger/journal_linux.go
new file mode 100644
index 000000000..00f335075
--- /dev/null
+++ b/src/go/logger/journal_linux.go
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+//go:build linux
+
+package logger
+
+import (
+	"os"
+	"strconv"
+	"strings"
+	"syscall"
+)
+
+func isStderrConnectedToJournal() bool {
+	stream := os.Getenv("JOURNAL_STREAM")
+	if stream == "" {
+		return false
+	}
+
+	idx := strings.IndexByte(stream, ':')
+	if idx <= 0 {
+		return false
+	}
+
+	dev, ino := stream[:idx], stream[idx+1:]
+
+	var stat syscall.Stat_t
+	if err := syscall.Fstat(int(os.Stderr.Fd()), &stat); err != nil {
+		return false
+	}
+
+	return dev == strconv.Itoa(int(stat.Dev)) && ino == strconv.FormatUint(stat.Ino, 10)
+}