[syslinux] extlinux device trouble

[Gene Cumm]

On Wed, Jan 15, 2014 at 3:26 AM, Johann Obermayr
<johann.obermayr at sigmatek.at> wrote:
> Am 15.01.2014 04:57, schrieb Gene Cumm:
>
>> On Tue, Jan 14, 2014 at 10:50 PM, Gene Cumm <gene.cumm at gmail.com> wrote:
>>>
>>> On Tue, Jan 14, 2014 at 9:28 AM, Johann Obermayr
>>> <johann.obermayr at sigmatek.at> wrote:
>>>>
>>>> Hello,
>>>>
>>>> i'm using version 4.07.
>>>> On my computer extlinux does not work.
>>>> after debugging, i found the trouble.
>>>>
>>>> in the function parse_mountinfo there was using a function get_string.
>>>> in the function get_string there was a line (42) } else if (ch == '\\')
>>>> {
>>>> but in my mountinfo list, there was \ , but not with octal digit.
>>>> so the function get_string will fail.
>>>>
>>>> here are some information
>>>> ### fstab ###
>>>> #Mount Build environment
>>>> //10.30.20.61/platform          /home/platform  smbfs guest,ro        0
>>>> 0
>>>> //10.30.20.61/builds            /home/builds            smbfs guest,ro
>>>> 0 0
>>>>
>>>> #### this is a part from /proc/self/mountinfo ########
>>>> 33 20 0:23 / /home/builds ro,relatime - cifs //10.30.20.61/builds
>>>>
>>>> ro,sec=ntlm,unc=\\10.30.20.61\builds,username=,uid=0,noforceuid,gid=0,noforcegid,addr=10.30.20.61,unix,posixpaths,serverino,acl,rsize=1048576,wsize=65536,actimeo=1
>>>> 32 20 0:24 / /home/platform ro,relatime - cifs //10.30.20.61/platform
>>>>
>>>> ro,sec=ntlm,unc=\\10.30.20.61\platform,username=,uid=0,noforceuid,gid=0,noforcegid,addr=10.30.20.61,unix,posixpaths,serverino,acl,rsize=1048576,wsize=65536,actimeo=1
>>>>
>>>> and after this entrys, there are my mounting points. extlinux does not
>>>> found
>>>> the correct entry.
>>>
>>> If I'm reading correctly, you feel the get_string() call on line 163
>>> (retrieving the mount options for m->mountopt will return -1 due to
>>> the double backslash).  Am I correct?  This seems rather odd that your
>>> mount options have the DOS form of the UNC path.
>>
>> Your mountinfo should have \134\134 not \\.
>>
> Hello,
>
> all our Linux Computer use Ubuntu 12.04 with the same mount entrys.
> And all have unc=\\ipaddr.....  in the file /proc/<pid>/mountinfo
> We don't known, how to change this to \134\134.

I presume these are mounted on boot from the fstab entry above.  What
kernel version?

-- 
-Gene