1// Copyright 2022 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build darwin
6
7package syscall
8
9// adjustFileLimit adds per-OS limitations on the Rlimit used for RLIMIT_NOFILE. See rlimit.go.
10func adjustFileLimit(lim *Rlimit) {
11	// On older macOS, setrlimit(RLIMIT_NOFILE, lim) with lim.Cur = infinity fails.
12	// Set to the value of kern.maxfilesperproc instead.
13	n, err := SysctlUint32("kern.maxfilesperproc")
14	if err != nil {
15		return
16	}
17	if lim.Cur > uint64(n) {
18		lim.Cur = uint64(n)
19	}
20}
21