[Bug 200637] sysutils/open-vm-tools: vmrun guest commands do not work [FIX]

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200637

            Bug ID: 200637
           Summary: sysutils/open-vm-tools: vmrun guest commands do not
                    work [FIX]
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: Individual Port(s)
          Assignee: freebsd-ports-bugs at FreeBSD.org
          Reporter: bms at fastmail.net

In FreeBSD, the following vmrun commands fail to operate due to a PAM-related
permissions issue: copyFileFromHostToGuest, runProgramInGuest,
runScriptInGuest.

Symptom: If I try to use vmrun with e.g. a passwordless account, I get the
following log message:
%%%
Nov 27 16:49:11 myhost vmsvc[9911]: in openpam_load_module(): no
pam_unix2.so found
%%%

Root cause: The PAM configuration installed with the port refers to
non-existent PAM modules.

Resolution: Remove the non-existent PAM modules from the configuration
installed for vmtoolsd.

%%%
sed -i.orig -e '/pam_unix2/d;/pam_unix_auth/d;/pam_unix_acct/d'
/usr/local/etc/pam.d/vmtoolsd
%%%

With this change, vmrun commands will work with the following caveats at the
host:

 - The runScriptInGuest command takes the content -- not a path -- of a script
to be executed with /bin/sh.

 - vmrun logs error messages to stdout, so they need to be parsed for guest
command return codes.

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