Path issue Filesystem mounted with NFS(v4?)

[Heinz Junkes]

I see exact the same behavior as in the ticket 4273.
Thanks for looking into….
Heinz

> On 13. Jul 2023, at 09:33, Chris Johns <chrisj at rtems.org> wrote:
> 
> 
> 
> On 11/7/2023 7:32 pm, Heinz Junkes wrote:
>> Hallo,
>> 
>> I am observing a strange problem with an NFS(v4) mounted filesystem and path usage.
>> 
>> I have mounted a filesystem via NFSv4 (/Volumes):
>> 
>> loc = 0x00820a20
>>    node_access = 0x007c2378, node_access_2 = 0x00000000, handler = 0x005c3474
>> type = nfs, mounted, read-write, target = /Volumes, dev = 141.14.131.192, root loc = 0x00913468
>> 
>> In the shell I can change there into a directory:
>> 
>> SHLL [/] # cd /Volumes/Epics/LogDir/Database
>> SHLL [/Volumes/Epics/LogDir/Database] # pwd
>> /Volumes/Epics/LogDir/Database
>> 
>> SHLL [/Volumes/Epics/LogDir/Database] # ls -l
>> total 20
>> -rw-r--r--  1 1001  1001  10694 Mar 23  2021 iocvmeIOC3.dbhcr
>> -rw-r--r--  1 1001  1001      0 Mar 23  2021 iocvmeIOC3.dbior
>> -rw-r--r--  1 1001  1001   5451 Mar 23  2021 iocvmeIOC3.dbl
>> 
>> I can now copy a file to here:
>> 
>> SHLL [/Volumes/Epics/LogDir/Database] # cp /etc/passwd .
>> SHLL [/Volumes/Epics/LogDir/Database] # ls -l
>> total 24
>> -rw-r--r--  1 1001   1001   10694 Mar 23  2021 iocvmeIOC3.dbhcr
>> -rw-r--r--  1 1001   1001       0 Mar 23  2021 iocvmeIOC3.dbior
>> -rw-r--r--  1 1001   1001    5451 Mar 23  2021 iocvmeIOC3.dbl
>> -rwxrwxrwt  1 65534  65534     14 Jul 11 11:28 passwd
>> SHLL [/Volumes/Epics/LogDir/Database] # cat passwd
>> root::0:0::::
>> SHLL [/Volumes/Epics/LogDir/Database] # rm passwd
>> SHLL [/Volumes/Epics/LogDir/Database] # ls -l
>> total 20
>> -rw-r--r--  1 1001  1001  10694 Mar 23  2021 iocvmeIOC3.dbhcr
>> -rw-r--r--  1 1001  1001      0 Mar 23  2021 iocvmeIOC3.dbior
>> -rw-r--r--  1 1001  1001   5451 Mar 23  2021 iocvmeIOC3.dbl
>> 
>> If I now specify the path instead of “.”, the file appears one dir up ????
>> 
>> SHLL [/Volumes/Epics/LogDir/Database] # cp /etc/passwd /Volumes/Epics/LogDir/Database/passwd
>> SHLL [/Volumes/Epics/LogDir/Database] # ls -l
>> total 20
>> -rw-r--r--  1 1001  1001  10694 Mar 23  2021 iocvmeIOC3.dbhcr
>> -rw-r--r--  1 1001  1001      0 Mar 23  2021 iocvmeIOC3.dbior
>> -rw-r--r--  1 1001  1001   5451 Mar 23  2021 iocvmeIOC3.dbl
>> SHLL [/Volumes/Epics/LogDir/Database] # ls -l ..
>> total 40
>> drwxrwxrwx  2 65534  65534  4096 Jul 11 11:29 Database
>> -rwxrwxrwt  1 65534  65534  9980 Jul 10 11:52 iocvmeIOC1.dbhcr
>> -rwsrwsrwt  1 65534  65534     0 Jul 10 11:52 iocvmeIOC1.dbior
>> -rwxrwxrwt  1 65534  65534  4713 Jul 10 11:59 iocvmeIOC1.dbl
>> drwxrwxrwx  3 65534  65534  4096 Mar 23  2021 log
>> -rwxrwxrwt  1 65534  65534    14 Jul 11 11:30 passwd
>> SHLL [/Volumes/Epics/LogDir/Database] # cat ../passwd
>> root::0:0::::
>> 
>> 
>> Any Idea what might go wrong? Any fix?
> 
> Is it related to https://devel.rtems.org/ticket/4723?
> 
> I was planning to look into this in the next couple of weeks.
> 
> Chris