Re: encfs over sshfs suffering with permission problem
On Fri, 23 Nov 2012 16:02:28 +0530
Kushal Kumaran <kushal.kumaran+debian@gmail.com> wrote:
> "J. B" <bakshi12@gmail.com> writes:
>
> > On Fri, 23 Nov 2012 09:28:21 +0530
> > Kushal Kumaran <kushal.kumaran+debian@gmail.com> wrote:
> >
> >
> >>
> >> 1. Ensure both encfs and sshfs are running as you, not root or any other
> >> user.
> >>
> >
> > Confirmed
> >
> >> 2. Check for I/O errors both on the local box and the remote box (run
> >> dmesg and look for suspicious logs).
> >>
> > nothing found
> >
> >> 3. Verify that you are able to create, delete and rename files on the
> >> sshfs mountpoint directly. Verify that newly-created files are writable
> >> by you.
> >
> > on sshfs mount point
> > ----------------------
> >
> > echo "test" > test.txt
> > echo "test more" >> test.txt
> >
> > cat test.txt
> > test
> > test more
> >
> > mv test.txt test12.txt
> >
> > rm test12.txt
> >
> >>
> >> 4. After mounting using sshfs and encfs, attach strace to the encfs
> >> process (run strace -p <encfs-pid> -o ~/encfs.log -f), and try to create
> >> a single file in the sshfs mountpoint (presumably this fails). Then
> >> detach the strace (C-c in that shell), and examine encfs.log for
> >> permission errors (EPERM). If you do not understand the log, reply back
> >> with a link to the log. The log might be large, so upload it to, for
> >> example, paste.debian.net, rather than attaching it to your email.
> >>
> >
> > cd to encfs mout point
> >
> > cd ../pcbackup_decrypt/
> >
> > touch 123
> > touch: cannot touch `123': Permission denied
> >
> > log from strace
> >
> > <snipped log>
>
> The log would suggest that encfs did not even attempt to create the
> file, which is strange. Run encfs with the -f and -v options, and see
> if it generates any error messages in its logs while you try to write to
> the filesystem.
>
when try to create I get the following
========================================
16:58:08 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0
16:58:08 (FileNode.cpp:127) calling setIV on (null)
16:58:08 (DirNode.cpp:770) created FileNode for /tmp/pcbackup_encrypt/
16:58:08 (encfs.cpp:134) getattr /tmp/pcbackup_encrypt/
16:58:08 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0
16:58:08 (FileNode.cpp:127) calling setIV on (null)
16:58:08 (DirNode.cpp:770) created FileNode for /tmp/pcbackup_encrypt/
16:58:08 (encfs.cpp:134) getattr /tmp/pcbackup_encrypt/
16:58:08 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0
16:58:08 (FileNode.cpp:127) calling setIV on (null)
16:58:09 (RawFileIO.cpp:191) getAttr error on /tmp/pcbackup_encrypt/SqUeX,,Q7SGt21hq7ByV-Zvc: No such file or directory
16:58:09 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 15501057619517851372, fileIV = 0
16:58:09 (DirNode.cpp:770) created FileNode for /tmp/pcbackup_encrypt/SqUeX,,Q7SGt21hq7ByV-Zvc
16:58:09 (encfs.cpp:134) getattr /tmp/pcbackup_encrypt/SqUeX,,Q7SGt21hq7ByV-Zvc
16:58:09 (RawFileIO.cpp:191) getAttr error on /tmp/pcbackup_encrypt/SqUeX,,Q7SGt21hq7ByV-Zvc: No such file or directory
16:58:09 (encfs.cpp:138) getattr error: No such file or directory
16:58:09 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0
16:58:09 (FileNode.cpp:127) calling setIV on (null)
16:58:09 (RawFileIO.cpp:191) getAttr error on /tmp/pcbackup_encrypt/SqUeX,,Q7SGt21hq7ByV-Zvc: No such file or directory
16:58:09 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 15501057619517851372, fileIV = 0
16:58:09 (DirNode.cpp:770) created FileNode for /tmp/pcbackup_encrypt/SqUeX,,Q7SGt21hq7ByV-Zvc
16:58:09 (encfs.cpp:134) getattr /tmp/pcbackup_encrypt/SqUeX,,Q7SGt21hq7ByV-Zvc
16:58:10 (RawFileIO.cpp:191) getAttr error on /tmp/pcbackup_encrypt/SqUeX,,Q7SGt21hq7ByV-Zvc: No such file or directory
16:58:10 (encfs.cpp:138) getattr error: No such file or directory
16:58:15 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0
16:58:15 (FileNode.cpp:127) calling setIV on (null)
16:58:15 (DirNode.cpp:770) created FileNode for /tmp/pcbackup_encrypt/
16:58:15 (encfs.cpp:134) getattr /tmp/pcbackup_encrypt/
^C16:58:19 (openssl.cpp:48) Allocating 41 locks for OpenSSL
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