From 69596106d3ce25b5c7cdf45ba7f7108212434fb7 Mon Sep 17 00:00:00 2001
From: Max Kellermann <mk@cm4all.com>
Date: Wed, 31 Aug 2022 16:05:37 +0200
Subject: [PATCH] io/FileDescriptor: add pread() wrapper

---
 src/io/FileDescriptor.hxx | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/io/FileDescriptor.hxx b/src/io/FileDescriptor.hxx
index 43267d1b0..e94cc3e9d 100644
--- a/src/io/FileDescriptor.hxx
+++ b/src/io/FileDescriptor.hxx
@@ -244,6 +244,12 @@ public:
 	[[gnu::pure]]
 	off_t GetSize() const noexcept;
 
+#ifndef _WIN32
+	ssize_t ReadAt(off_t offset, void *buffer, std::size_t length) noexcept {
+		return ::pread(fd, buffer, length, offset);
+	}
+#endif
+
 	ssize_t Read(void *buffer, std::size_t length) noexcept {
 		return ::read(fd, buffer, length);
 	}