git: b0fd969121 - main - handbook/linuxemu: show how to mount linprocfs

[Chris Rees]

The branch main has been updated by crees:

URL: https://cgit.FreeBSD.org/doc/commit/?id=b0fd96912189684a0ab542045c4560d1c72d60b2

commit b0fd96912189684a0ab542045c4560d1c72d60b2
Author:     Alexis Praga <alexis.praga at free.fr>
AuthorDate: 2021-03-03 16:53:42 +0000
Commit:     Chris Rees <crees at FreeBSD.org>
CommitDate: 2021-03-03 16:53:42 +0000

    handbook/linuxemu: show how to mount linprocfs
    
    Some programs expect procfs and other Linuxisms.
    
    PR:             docs/195209
    Reported by:    ngie
---
 .../content/en/books/handbook/linuxemu/_index.adoc      | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/documentation/content/en/books/handbook/linuxemu/_index.adoc b/documentation/content/en/books/handbook/linuxemu/_index.adoc
index 532da8f564..29e73a0e94 100644
--- a/documentation/content/en/books/handbook/linuxemu/_index.adoc
+++ b/documentation/content/en/books/handbook/linuxemu/_index.adoc
@@ -111,6 +111,23 @@ On 64-bit machines, [.filename]#/etc/rc.d/abi# will automatically load the modul
 
 Since the Linux(R) binary compatibility layer has gained support for running both 32- and 64-bit Linux(R) binaries (on 64-bit x86 hosts), it is no longer possible to link the emulation functionality statically into a custom kernel.
 
+For some applications, [.filename]#/compat/linux/proc#, [.filename]#/compat/linux/sys#, and [.filename]#/compat/linux/dev/shm# may need to be mounted. Add this line to [.filename]#/etc/fstab#:
+
+....
+linprocfs  /compat/linux/proc     linprocfs   rw            0   0
+linsysfs   /compat/linux/sys      linsysfs    rw            0   0
+tmpfs      /compat/linux/dev/shm  tmpfs       rw,mode=1777  0   0
+....
+
+Then mount the filesystem accordingly:
+
+[source,bash]
+----
+# mount /compat/linux/sys
+# mount /compat/linux/proc
+# mount /compat/linux/dev/shm
+----
+
 [[linuxemu-libs-manually]]
 === Installing Additional Libraries Manually