Re: [PATCH 2/2, 2nd attempt] samples/auto.smb: add logic to obtain credentials

[Martin Wilck <martin.wilck@ts.fujitsu.com>]

On 09/06/2013 09:59 AM, Ian Kent wrote:

>> -$SMBCLIENT -gNL $key 2>/dev/null| awk -v key="$key" -v opts="$opts" -F'|' -- '
>> +creds=/etc/creds/$key
>> +if [ -f "$creds" ]; then
>> +    opts="$opts"',uid=$UID,gid=$GID,credentials='"$creds"
>> +    smbopts="-A $creds"
>> +else
>> +    get_krb5_cache
>> +    if [ -n "$cache" ]; then
>> +        opts="$opts"',multiuser,cruid=$UID,sec=krb5i'
>> +        smbopts="-k"
>> +        export KRB5CCNAME=$cache 
>> +    else
>> +        opts="$opts"',guest'
> 
> Why add guest?

"guest" means "don't prompt for a password" which is what mount.cifs
will attempt to do if no credentials are available already (e.g. via
kerberos ticket). IMO that's what's needed for autofs, otherwise the
mount attempt might hang waiting for password input.

> Is that going to change the behavior of the existing script.

"guest" mode was all the previous script could do, thus it seems to have
been written with servers in mind that only offered guest access in the
first place (und thus wouldn't prompt for a password, either).

Martin

-- 
Dr. Martin Wilck
PRIMERGY System Software Engineer
x86 Server Engineering

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