Hi Miklos,
I went through the patches and the tests, and I can
announce that ntfs-3g is the first fuse-based file system
which passes the PJD Posix test fully, including the
Posix ACL parts.
Thank you for having made this possible.
I used kernel 2.6.29 with your proposed patches applied
to the fuse client (fuse.ko), and a simplified version of
the fuse server (fuse-lite), which I upgraded manually
according to your proposed patches.
There were only three modifications needed not mentioned
in your proposal, probably consequences of different
reference versions :
- new fields in attr_out and write_in
- umask not copied from low level context to high level.
I checked the client-server compatibility in the four
possible associations (new client / old server, etc.),
but of course both new client and new server are required
to get the correct permissions on file creation.
For releasing a file system source compatible with both
old and new fuse.h, I check whether FUSE_CAP_DONT_MASK
is defined. From now on, I can release code which will compile
and run with current fuse (server and file system ready)
and will benefit from permission fixes when kernels with
updated fuse client will be released.
There is just a point which worries me : I cannot understand
how your client patch deactivates the old code which was
applying the umask. I would prefer not to discover it the
hard way...
Regards
Jean-Pierre
Miklos Szeredi wrote:
On Fri, 19 Jun 2009, Jean-Pierre André wrote:
On the very related issue of having some way of getting
the original permission flags (with umask not applied),
in create(), has there been any progress ?
OK, here's a patch that does this, it applies on top of latest git.
Could you please give it a test?
Even if you are not using git, you can get a "snapshot" of the git
tree from www.kernel.org.
I'll follow up with a patch for libfuse (also against latest CVS or
2.8.0-pre3)
Thanks,
Miklos
---
This patch lets filesystems handle masking the file mode on creation.
This is needed if filesystem is using ACLs.
- The CREATE, MKDIR and MKNOD requests are extended with a "umask"
parameter.
- A new FUSE_DONT_MASK flag is added to the INIT request/reply. With
this the filesystem may request that the create mode is not masked.
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