From 6de5ca46f80c4e0d5bfc2df42a8d6af3757a312b Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Mon, 10 Jul 2023 12:43:32 +0100
Subject: [chore]: Bump golang.org/x/net from 0.11.0 to 0.12.0 (#1973)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
---
 vendor/golang.org/x/sys/unix/mremap.go | 40 ++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 vendor/golang.org/x/sys/unix/mremap.go

(limited to 'vendor/golang.org/x/sys/unix/mremap.go')

diff --git a/vendor/golang.org/x/sys/unix/mremap.go b/vendor/golang.org/x/sys/unix/mremap.go
new file mode 100644
index 000000000..86213c05d
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mremap.go
@@ -0,0 +1,40 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build linux
+// +build linux
+
+package unix
+
+import "unsafe"
+
+type mremapMmapper struct {
+	mmapper
+	mremap func(oldaddr uintptr, oldlength uintptr, newlength uintptr, flags int, newaddr uintptr) (xaddr uintptr, err error)
+}
+
+func (m *mremapMmapper) Mremap(oldData []byte, newLength int, flags int) (data []byte, err error) {
+	if newLength <= 0 || len(oldData) == 0 || len(oldData) != cap(oldData) || flags&MREMAP_FIXED != 0 {
+		return nil, EINVAL
+	}
+
+	pOld := &oldData[cap(oldData)-1]
+	m.Lock()
+	defer m.Unlock()
+	bOld := m.active[pOld]
+	if bOld == nil || &bOld[0] != &oldData[0] {
+		return nil, EINVAL
+	}
+	newAddr, errno := m.mremap(uintptr(unsafe.Pointer(&bOld[0])), uintptr(len(bOld)), uintptr(newLength), flags, 0)
+	if errno != nil {
+		return nil, errno
+	}
+	bNew := unsafe.Slice((*byte)(unsafe.Pointer(newAddr)), newLength)
+	pNew := &bNew[cap(bNew)-1]
+	if flags&MREMAP_DONTUNMAP == 0 {
+		delete(m.active, pOld)
+	}
+	m.active[pNew] = bNew
+	return bNew, nil
+}
-- 
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