git: 2ffd6857cca0 - stable/13 - rc: make the 'linux' script explicitly load filesystem modules

The branch stable/13 has been updated by trasz:

URL: https://cgit.FreeBSD.org/src/commit/?id=2ffd6857cca0a022620fb0ee6eec6dc17be5831d

commit 2ffd6857cca0a022620fb0ee6eec6dc17be5831d
Author:     Edward Tomasz Napierala <trasz@FreeBSD.org>
AuthorDate: 2021-04-21 11:54:29 +0000
Commit:     Edward Tomasz Napierala <trasz@FreeBSD.org>
CommitDate: 2022-02-13 23:20:29 +0000

    rc: make the 'linux' script explicitly load filesystem modules
    
    This removes a minor annoyance with Linux jails, where you often
    want linux_mounts_enable="NO", yet you want those filesystems
    available for mounting in jails; normally mount(8) would result
    in kernel automatically loading the KLD, but this doesn't work
    inside jails or chroots.
    
    PR:             242955
    Sponsored By:   EPSRC
    Differential Revision:  https://reviews.freebsd.org/D29725
    
    (cherry picked from commit 45aec46246fe61a3f45cf7da1c80850dc226f609)
---
 libexec/rc/rc.d/linux | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libexec/rc/rc.d/linux b/libexec/rc/rc.d/linux
index c9c45ba8b338..2cf32a1ecec3 100755
--- a/libexec/rc/rc.d/linux
+++ b/libexec/rc/rc.d/linux
@@ -46,6 +46,12 @@ linux_start()
 	# Linux uses the pre-pts(4) tty naming scheme.
 	load_kld pty
 
+	# Explicitly load the filesystem modules; they are usually required,
+	# even with linux_mounts_enable="NO".
+	load_kld fdescfs
+	load_kld linprocfs
+	load_kld linsysfs
+
 	# Handle unbranded ELF executables by defaulting to ELFOSABI_LINUX.
 	if [ `sysctl -ni kern.elf64.fallback_brand` -eq "-1" ]; then
 		sysctl kern.elf64.fallback_brand=3 > /dev/null