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This implements two core changes:
* use NTTIME instead of struct timespec at the database layer
* use struct timespec { .tv_nsec = SAMBA_UTIME_OMIT } as special sentinel
value in smbd when processing timestamps
Using NTTIME at the database layer is only done to avoid storing the special
struct timespec sentinel values on disk. Instead, with NTTIME the sentinel value
for an "unset" timestamp is just 0 on-disk.
The NTTIME value of 0 gets translated by nt_time_to_full_timespec() to the
struct timespec sentinel value { .tv_nsec = SAMBA_UTIME_OMIT }.
The function is_omit_timespec() can be used to check this.
Beside nt_time_to_full_timespec(), there are various other new time conversion
functions with *full* in their name that can be used to safely convert between
different types with the changed sentinel value.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=7771
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This simplifies (and corrects) things in the VFS as there the caller is only
interested in whether a name is pointing to a real named stream most of the times.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is needed as the callback might be called in an arbitrary
impersonation state.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This also removes smb_vfs_ev_glue_[push|pop]_use() as the only caller
got removed.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
We apply some post processing to the dosmode returned from the VFS
function. Move this to a seperate function which will be reused in the
next commit in the async dos_mode_send/recv post processing.
Best viewed with: git show --histogram
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
In preperation of adding an async version of get_ea_dos_attribute() that
will then call parse_dos_attribute_blob() too.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
According to MS-FSA a stream name does not have
separate DOS attribute metadata, so we must return
the DOS attribute from the base filename. With one caveat,
a non-default stream name can never be a directory.
As this is common to all streams data stores, we handle
it here instead of inside all stream VFS modules.
Otherwise identical logic would have to be added to
all streams modules in their [f]get_dos_attribute_fn()
VFS calls.
Found in real-world use case by Andrew Walker <awalker@ixsystems.com>.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13380
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>
All we want here is FILE_WRITE_ATTRIBUTES, not FILE_WRITE_DATA.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12995
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Tue Oct 17 11:48:09 CEST 2017 on sn-devel-144
We wanted to set the DOS attributes and failed with permission denied
from the VFS/kernel/filesystem. Next thing we wanna do here is override
this if either
- "dos filemode = true" is set and the security descriptor gives the
user write access or if
- the stored security descriptor has FILE_WRITE_ATTRIBUTES
The former was working, but the latter was not implemented at all.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12995
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
While I'm at it, some README.Coding fixes in set_ea_dos_attribute.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12995
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
When trying to fetch the DOS attributes xattr via SMB_VFS_GETXATTR() if
the filesystem doesn't grant read access to the file the xattr read
request fails with EACCESS.
But according to MS-FSA 2.1.5.1.2.1 "Algorithm to Check Access to an
Existing File" FILE_LIST_DIRECTORY on a directory implies
FILE_READ_ATTRIBUTES for directory entries.
So if the user can open the parent directory for reading this implies
FILE_LIST_DIRECTORY and we can safely call SMB_VFS_GETXATTR() as root,
ensuring we can read the DOS attributes xattr.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12944
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
Only fall back to using UNIX modes if we get NOT_IMPLEMENTED. This is
exactly what we already do when setting DOS attributes.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12944
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
We need to migrate all pathname based VFS calls to use a struct
to finish modernising the VFS with extra timestamp and flags parameters.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Jun 1 02:58:53 CEST 2017 on sn-devel-144
We need to migrate all pathname based VFS calls to use a struct
to finish modernising the VFS with extra timestamp and flags parameters.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We need to migrate all pathname based VFS calls to use a struct
to finish modernising the VFS with extra timestamp and flags parameters.
Requires a few extra cleanups in calling code.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
The rule is, a directory (with any other attributes) should always also
set FILE_ATTRIBUTE_DIRECTORY, a file should only set
FILE_ATTRIBUTE_NORMAL if no other attributes is set.
Iow, if a file contains any existing attributes (e.g. FILE_ATTRIBUTE_HIDDEN),
don't add in the FILE_ATTRIBUTE_NORMAL attribute.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12436
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Sat Nov 19 11:55:35 CET 2016 on sn-devel-144
The offline VFS functions predate the SMB_VFS_{GET|SET}_DOS_ATTRIBUTES()
functions, now that we have these, we can use them for the offline
attribute as well.
The primary reason for this is: performance. Merging both functions has
the benefit that in VFS modules that use same backing store bits for
both offline attribute and DOS attributes (like gpfs), we avoid calling
the backing store twice in dos_mode() and file_set_dosmode().
This commit modifies all existing users of the offline attribute to
adapt to the change, the next commit will then remove the obsolete
offline functions.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Some VFS modules like GPFS will always return success from
SMB_VFS_GET_DOS_ATTRIBUTES() but only set a subset of the attributes. It
neither sets FILE_ATTRIBUTE_NORMAL nor FILE_ATTRIBUTE_DIRECTORY.
We already handle the case that the VFS stack returns with result==0 and
then add the FILE_ATTRIBUTE_NORMAL, regardless of the type of the
filesystem object. If we want to handle result==0 situation in the
SMB_VFS_GET_DOS_ATTRIBUTES() caller, then do it right by either setting
FILE_ATTRIBUTE_NORMAL or FILE_ATTRIBUTE_DIRECTORY.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12261
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Sep 16 00:34:43 CEST 2016 on sn-devel-144
Consolidate the "hide dot files" and "hide files" handling stuff in one
function. No change in overall behaviour.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11992
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This doesn't change overall behaviour in any way, it just prepares for
the next step where the IS_HIDDEN_PATH() stuff will be moved to the
function dos_mode_from_name().
It allows an optimisation by not checking "hide to files" patch if
FILE_ATTRIBUTE_HIDDEN was already set in the DOS xattr.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11992
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This just moves the computation of "hide dot files" files to a helper
functions without changing overall behaviour.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11992
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This will make it easier to support those systems and file systems that
can store DOS attributes.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Richard Sharpe <rsharpe@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sun Mar 27 09:23:42 CEST 2016 on sn-devel-144
Get it from parent/deriving smb_filename if present.
Use 0 (as usually this a Windows-style lookup) if
not.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
We now have <function_name:> embedded automatically into DBG_XXX-
generated messages.
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Tue Dec 29 04:18:19 CET 2015 on sn-devel-144
Smbd would disable "store dos attributes" on-the-fly if the
attempt to set/get user.DOSATTRIB fails with ENOTSUP or ENOSYS.
The rationale behind it was that the file system does not support
extended attributes, so there's no need to fill up the log with
failure messages.
However, a "wide symlink" could point to a spot that doesn't support
extended attributes. Even with the default banned wide links, we
currenly allow stat'ing those files and follow the symlink, and this
in turn would disable "store dos attributes" for the whole share.
The user.DOSATTRIB attribute also stores file creation time,
so that is also affected.
Another case where this behavior would turn storage of DOS attributes
off is that of the ".." entry at the root of the share, if the parent
folder for the share's root path does not support extended attributes.
On the other hand, the information on the file system and its support
of extended attributes is readily available, so the fix for explosion
of the log should be not to configure "store dos attributes" on
such a share.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11649
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Fri Dec 25 13:20:58 CET 2015 on sn-devel-144
When using "store dos attributes = yes", the function that reads the
attributes from the xattr get_ea_dos_attribute() will overwrite the
attribute previously set for "hide dot files".
According to smb.conf, "store dos attributes = yes" should only
overwrite the "map XXX" options, but not "hide dot files".
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11645
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Dec 16 07:21:10 CET 2015 on sn-devel-104
Logging the returned mode bits should be only "informational" (level 5).
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Jul 9 15:36:30 CEST 2015 on sn-devel-104
On Windows servers (tested against Windows Server 2008 & 2012) the
FSCTL_SET_SPARSE ioctl is processed if FILE_WRITE_DATA,
FILE_WRITE_ATTRIBUTES _or_ SEC_FILE_APPEND_DATA permissions are granted
on the open file-handle.
Fix Samba such that it matches this behaviour, rather than only checking
for FILE_WRITE_DATA or FILE_WRITE_ATTRIBUTES.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Check that FSCTL_SET_SPARSE requests does not refer to directories. Also
reject such requests when issued over IPC or printer share connections.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10787
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): Thu Aug 28 04:22:37 CEST 2014 on sn-devel-104
