Bug 2207801

Description of problem:

Jonathan from Morgan has been continuing testing with the RHEL8 autofs, and the earlier issues with the hangs and the like are gone (Thanks again for that). He did have a pair of questions around netgrp handling and selectors if you have a moment:

<customer email>

We have hit another snag with the AMD compatibility layer in AutoFS. Can you kindly reach out to Ian and find out if the netgrpd() functionality was ported in to AutoFS AMD compatibility layer?

We have several escalations of mount failures due to the following:

May  2 17:16:18 [REDACTED HOSTNAME] automount[2410]: parse_mount: parse(amd): failed to parse entry: netgrpd(aveksa_hosts_all_nonprod);addopts:=sec=sys;rhost:=[REDACTED];rfs:=[REDACTED] || addopts:=sec=krb5,vers=4;rhost:=[REDACTED];rfs:=[REDACTED]

There are a little over 3000 shares in the plant relying on the netgrpd() functionality so this is causing some pain.

The netgrpd() functionality AND selectors (‘||’). The time we use selectors is when we have a group of hosts that needs to mount the share with a different security_flavor than the default.

Version-Release number of selected component (if applicable):
autofs-5.1.4-103.el8

How reproducible:
Always

Steps to Reproduce:
1.
1a) add "/test	file,amd:/etc/amd.test" to /etc/auto.master.
1b) create /etc/amd.test as
mnt1    netgrpd(mynetgroupd);type:=nfs;rhost:=centos7;rfs:=/autofs/export1 || type:=nfs;rhost:=centos7;rfs:=/autofs/export2
mnt2    netgrpd(othernetgroupd);type:=nfs;rhost:=centos7;rfs:=/autofs/export1 netgrpd(mynetgroupd);type:=nfs;rhost:=centos7;rfs:=/autofs/export2

2. Create /etc/netgroup as
mynetgroup	(donald,,themaw.net)(gandalf,,themaw.net)
mynetgroupd	(donald.themaw.net,,themaw.net)(gandalf.themaw.net,,themaw.net)

3. Start autofs, ensure /test gets mounted and try "ls /test/mnt1" or
   "ls /test/mnt2"
4. Observe the "failed to parse entry" entry in the systemd journal.

This assumes an NFS server named centos7.themaw.net that has exported
directories of /autofs/export1 and /autofs/export2, and an autofs
client named donald.themaw.net setup as above.

Actual results:
The mount fails with a parse error.

Expected results:
No parse error is seen and the appropriate mount is attempted,
either for a netgroup name match orthe one corresponding to not
a match.