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Preparing to reduce use of lp_posix_pathnames().
Uses the same techniques as commit 616d068f0c
(synthetic_smb_fname()) to cope with modules that
modify the incoming pathname.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Wed Feb 24 16:05:55 CET 2016 on sn-devel-144
Bumps VFS version to 35.
Preparing to reduce use of lp_posix_pathnames().
Most of this is boilerplate, the only subtleties are in
the modules:
vfs_catia.c
vfs_media_harmony.c
vfs_shadow_copy2.c
vfs_unityed_media.c
Where the path is modified then passed to SMB_VFS_NEXT_GET_NT_ACL().
In these cases the change uses synthetic_smb_fname() to
create a new struct smb_filename from the modified path.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <rb@sernet.de>
Adding a path parameter would allow the VFS get_quota
function to be used for determining the quota/usage
when calculating size and free spacei.
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
I still need to fix the rpc stuff, but we are almost there.
Signed-off-by: Richard Sharpe <rsharpe@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu May 14 22:16:56 CEST 2015 on sn-devel-104
This change adds three new VFS hooks covering snapshot manipulation:
- snap_check_path
Check whether a path supports snapshots.
- snap_create
Request the creation of a snapshot of the provided path.
- snap_delete
Request the deletion of a snapshot.
These VFS call-outs will be used in future by Samba's File Server Remote
VSS Protocol (FSRVP) server.
MS-FSVRP states:
At any given time, Windows servers allow only one shadow copy set to
be going through the creation process.
Therefore, only provide synchronous hooks for now, which can be
converted to asynchronous _send/_recv functions when the corresponding
DCE/RPC server infrastructure is in place.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The Linux fallocate syscall offers a mode parameter which can take the
following flags:
FALLOC_FL_KEEP_SIZE
FALLOC_FL_PUNCH_HOLE (since 2.6.38)
FALLOC_FL_COLLAPSE_RANGE (since 3.15)
FALLOC_FL_ZERO_RANGE (since 3.14)
The flags are not exclusive, e.g. FALLOC_FL_PUNCH_HOLE must be specified
alongside FALLOC_FL_KEEP_SIZE.
Samba currently takes a vfs_fallocate_mode enum parameter for the VFS
fallocate hook, taking either an EXTEND_SIZE or KEEP_SIZE value. This
commit changes the fallocate hook such that it accepts a uint32_t flags
parameter, in preparation for PUNCH_HOLE and ZERO_RANGE support.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The small_query parameter for SMB_VFS_DISK_FREE() was, prior to the
previous commit, used to obtain 16-bit wide free-space information for
the deprecated dskattr SMB_COM_QUERY_INFORMATION_DISK command.
With the dskattr handler now performing the 16-bit collapse directly,
the small_query parameter can be removed from the entire code path.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Feb 17 05:37:20 CET 2015 on sn-devel-104
SMB_VFS_READDIR_ATTR is a last minute hook to fetch additional metadata
for a directory entry when we're already marshalling the SMB reply
buffer.
This would be used, when there's a need to repurpose some fields in the
the reply, like it's done with Apple's SMB2 extension "AAPL".
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The VFS interfaces are sychronous, as the operations only modify
meta-data.
These hooks are dependent on support for transparent compression by the
underlying filesystem - vfs_default returns INVALID_DEVICE_REQUEST.
Support for other filesystems providing transparent comression, such as
Btrfs and ZFS, can be added in future.
The get_compression function takes fsp and smb_fname arguments. The
smb_fname argument is needed due to the current dosmode() code-path.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
copy_chunk copies n bytes from a source file at a specific offset to a
destination file at a given offset. This interface will be used in
handling smb2 FSCTL_SRV_COPYCHUNK ioctl requests.
Use a pread/pwrite loop in vfs_default, so that requests referring to
the same src and dest file are possible.
Provide send and receive hooks for copy chunk VFS interface, allowing
asynchronous behaviour.
Check whether the request source offset + length exceeds the current
size. Return STATUS_INVALID_VIEW_SIZE under such a condition, matching
Windows server behaviour.
Reviewed by: Jeremy Allison <jra@samba.org>
This interface actually needs to match the get_nt_acl interface in
that the system ACL implmenetation may not be posix ACLs, and the blob
is not meant to be enforced to be of a particular system ACL
structure.
Andrew Bartlett
This makes it clear which context the returned SD is allocated on, as
a number of callers do not want it on talloc_tos().
As the ACL transformation allocates and then no longer needs a great
deal of memory, a talloc_stackframe() call is used to contain the
memory that is not returned further up the stack.
Andrew Bartlett
This changes from allocation on NULL to allocation on the supplied
memory context.
Currently that supplied context is talloc_tos() at the the final consumer of
the ACL.
Andrew Bartlett
This will allow us to hash this, rather than the NT ACL it maps to.
This will in turn allow us to know if the NT ACL is valid even if we
have to change the mapping code.
Andrew Bartlett
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Sep 12 07:06:01 CEST 2012 on sn-devel-104
We no longer do struct smb_acl_t manipuations via the VFS layer,
which is now reduced to handling the get/set functions.
The only backend that implemented these functions (aside from audit)
was the vfs_default module calling the sys_acl code. The various ACL
implementation modules either worked on the fully initilaised
smb_acl_t object or on NT ACLs.
This not only makes the operation of the posix ACL code more efficient
(as allocation and free is not put via the VFS), it makes it easier to
test and removes the fantasy that a module could safely redefine this
structure or the behaviour here.
The smb_acls.idl now defines the structure, and it is now allocated
with talloc.
These operations were originally added to the VFS in commit
3bb219161a.
Andrew Bartlett
Now that we always require a 64 bit off_t, we no longer need SMB_OFF_T.
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Fri Apr 6 01:47:43 CEST 2012 on sn-devel-104
This removes a dependency on "struct notify_entry" and makes the nature of the
API more explicit. We depend upon the VFS module to mask out elements from
e->filter and e->subdir_filter that it took over to handle.
Autobuild-User: Volker Lendecke <vl@samba.org>
Autobuild-Date: Mon Mar 26 17:45:44 CEST 2012 on sn-devel-104
With other builds in the include path, examples get the includes.h wrong
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Tue Dec 13 23:40:37 CET 2011 on sn-devel-104
This should finally fix the AIX build and allow to remove AIX specific ifdefs.
Guenther
Signed-off-by: Jeremy Allison <jra@samba.org>
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Thu Apr 21 02:01:20 CEST 2011 on sn-devel-104
It turns out we need the fallocate operations to be able to both
allocate and extend filesize, and to allocate and not extend
filesize, and posix_fallocate can only do the former. So by defining
the vfs op as posix_fallocate we lose the opportunity to use any
underlying syscalls (like Linux fallocate) that can do the latter
as well.
We don't currently use the non-extending filesize call, but now
I've changed the vfs op definition we can in the future. For the
moment simply map the fallocate op onto posix_fallocate for the
VFS_FALLOCATE_EXTEND_SIZE case and return ENOSYS for the
VFS_FALLOCATE_KEEP_SIZE case.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Sat Dec 18 08:59:27 CET 2010 on sn-devel-104
module, change the signature of VFS_REALPATH to always return a
malloc'ed string.
Needed to make some privileges work I plan on doing shortly
easier to code.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Sat Nov 20 02:15:50 CET 2010 on sn-devel-104
Ensure we don't use any of the create_options for Samba private
use. Add a new parameter to the VFS_CREATE call (private_flags)
which is only used internally. Renumber NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
and NTCREATEX_OPTIONS_PRIVATE_DENY_FCB to match the S4 code).
Rev. the VFS interface to version 28.
Jeremy.
