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SMB_VFS_CHFLAGS isn't actually getting the smb_filename struct for now
since it only operates on the basefile. This is the strategy for all
path-based operations that will never actually operate on a stream.
By clarifying the meaning of path based operations that don't take an
smb_filename struct, modules that implement streams such as vfs_onefs
no longer need to implement SMB_VFS_CHFLAGS to ensure it's only called
on the base_name.
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See the STREAMERROR s3 torture test.
Jeremy, Tim, please check!
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metze
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This is possible because open_directory() returns an error if
the fname is a stream, so the base_name can be used.
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NT_TRANSACT_CREATE.
Reported and verified by Long Li <longli@microsoft.com>
Jeremy.
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This patch introduces two new temporary helper functions
vfs_stat_smb_fname and vfs_lstat_smb_fname. They basically allowed me
to call the new smb_filename version of stat, while avoiding plumbing
it through callers that are still too inconvenient. As the conversion
moves along, I will be able to remove callers of this, with the goal
being to remove all callers.
There was also a bug in create_synthetic_smb_fname_split (also a
temporary utility function) that caused it to incorrectly handle
filenames with ':'s in them when in posix mode. This is now fixed.
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Jeremy.
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Fix a couple more unix_convert uses to filename_convert.
Fix bug in acl_group_override() where an uninitialized
struct could be used. Move unix_convert with wildcard
use in SMBsearch reply to boilerplate code.
Jeremy.
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This was a little messy because of all of the vfs modules I had to
touch. Most of them were pretty straight forward, but the streams
modules required a little attention to handle smb_filename. Since the
use of smb_filename enables the vfs modules to access the raw,
over-the-wire stream, a little bit of the handling that was being done
by split_ntfs_stream_name has now been shifted into the individual
stream modules. It may be a little more code, but overall it gives
more flexibility to the streams modules, while also allowing correct
stream handling.
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I used the smb_filename struct everywhere that was feasible for the
first pass. There are still some places in this path that need to be
changed to use smb_filename, but this is a good start.
I also:
- Removed fname/path arguments from a few functions that weren't
really using them.
- Added a utility function for detecting whether an smb_filename is a
stream.
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No longer needed.
Jeremy
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smb_filename struct
Some of the callers required minimal changes, while others
(copy_internals) required significant changes. The task is simplified
a little bit because we are able to do operations and checks on the
base_name when a stream isn't used.
This patch should cause no functional changes.
Volker, Jeremy: Please check
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The change to smbd/trans2.c opens up
SETFILEINFO calls to POSIX_OPEN only. The change to first smbd/open.c closes 2
holes that would have been exposed by allowing POSIX_OPENS on readonly shares,
and their ability to set arbitrary flags permutations. The O_CREAT ->
O_CREAT|O_EXCL change removes an illegal combination (O_EXCL without O_CREAT)
that previously was being passed down to the open syscall.
Jeremy.
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This patch introduces
struct stat_ex {
dev_t st_ex_dev;
ino_t st_ex_ino;
mode_t st_ex_mode;
nlink_t st_ex_nlink;
uid_t st_ex_uid;
gid_t st_ex_gid;
dev_t st_ex_rdev;
off_t st_ex_size;
struct timespec st_ex_atime;
struct timespec st_ex_mtime;
struct timespec st_ex_ctime;
struct timespec st_ex_btime; /* birthtime */
blksize_t st_ex_blksize;
blkcnt_t st_ex_blocks;
};
typedef struct stat_ex SMB_STRUCT_STAT;
It is really large because due to the friendly libc headers playing macro
tricks with fields like st_ino, so I renamed them to st_ex_xxx.
Why this change? To support birthtime, we already have quite a few #ifdef's at
places where it does not really belong. With a stat struct that we control, we
can consolidate the nanosecond timestamps and the birthtime deep in the VFS
stat calls.
At this moment it is triggered by a request to support the birthtime field for
GPFS. GPFS does not extend the system level struct stat, but instead has a
separate call that gets us the additional information beyond posix. Without
being able to do that within the VFS stat calls, that support would have to be
scattered around the main smbd code.
It will very likely break all the onefs modules, but I think the changes will
be reasonably easy to do.
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This is the first of a series of patches that change path based
operations to operate on a struct smb_filename instead of a char *.
This same concept already exists in source4.
My goals for this series of patches are to eventually:
1) Solve the stream vs. posix filename that contains a colon ambiguity
that currently exists.
2) Make unix_convert the only function that parses the stream name.
3) Clean up the unix_convert API.
4) Change all path based vfs operation to take a struct smb_filename.
5) Make is_ntfs_stream_name() a constant operation that can simply
check the state of struct smb_filename rather than re-parse the
filename.
6) Eliminate the need for split_ntfs_stream_name() to exist.
My strategy is to start from the inside at unix_convert() and work my
way out through the vfs layer, call by call. This first patch does
just that, by changing unix_convert and all of its callers to operate
on struct smb_filename. Since this is such a large change, I plan on
pushing the patches in phases, where each phase keeps full
compatibility and passes make test.
The API of unix_convert has been simplified from:
NTSTATUS unix_convert(TALLOC_CTX *ctx,
connection_struct *conn,
const char *orig_path,
bool allow_wcard_last_component,
char **pp_conv_path,
char **pp_saved_last_component,
SMB_STRUCT_STAT *pst)
to:
NTSTATUS unix_convert(TALLOC_CTX *ctx,
connection_struct *conn,
const char *orig_path,
struct smb_filename *smb_fname,
uint32_t ucf_flags)
Currently the smb_filename struct looks like:
struct smb_filename {
char *base_name;
char *stream_name;
char *original_lcomp;
SMB_STRUCT_STAT st;
};
One key point here is the decision to break up the base_name and
stream_name. I have introduced a helper function called
get_full_smb_filename() that takes an smb_filename struct and
allocates the full_name. I changed the callers of unix_convert() to
subsequently call get_full_smb_filename() for the time being, but I
plan to eventually eliminate get_full_smb_filename().
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Guenther
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parameter "msdfs root = yes"
This was broken by the refactoring around create_file().
MSDFS pathname processing must be done FIRST.
MSDFS pathnames containing IPv6 addresses can
be confused with NTFS stream names (they contain
":" characters.
Jeremy.
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We keep the seqnum/mid mapping in the smb_request structure.
This also moves one global variable into the
smbd_server_connection struct.
metze
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Jeremy.
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Confirmed by reporters.
Jeremy.
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This eliminates the last direct caller of create_file_unixpath
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if admin user.
Jeremy.
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delete file (directory fix).
Jeremy.
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Jeremy.
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- Attempt to use syscalls to determine max-open-files value.
- Add in periodic logging when max file limit reached
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This extends the file_id struct to add an additional generic uint64_t
field: extid. For backwards compatibility with dev/inodes stored in
xattr_tdbs and acl_tdbs, the ext id is ignored for these databases.
This patch should cause no functional change on systems that don't use
SMB_VFS_FILE_ID_CREATE to set the extid.
Existing code that uses the smb_share_mode library will need to be
updated to be compatibile with the new extid.
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Do not attempt to delete streams on a truncating open, if the name
we're opening is itself a stream.
Port 176e8857203944bc332844b700749120ce90c891 to standard open path
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failing.
Reported by Kukks. Make sure we correctly use LSTAT in all cases where
POSIX pathnames are being used. This matters when dealing with symlinks
pointing to invalid paths being renamed or deleted not all deletes and
renames are done via an nt_create open.
Jeremy.
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delete file
This fixes the generic rename/delete problem for 3.3.0 and above.
Fixed slightly differently to discussions, user viewable modified
ACLs are not a good idea :-).
Jeremy.
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The new create disposition test in smbtorture RAW-STREAMS verifies
this fix.
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The goal is to move all this variables into a big context structure.
metze
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The callers of open_file_ntcreate expect *psbuf to be filled correctly
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Jeremy.
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It doesn't really make sense to check the length of a not-yet-allocated string
:-)
Volker
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Windows returns NT_STATUS_FILE_IS_A_DIRECTORY, as does Samba 3.0. 3.2 and
following returned NT_STATUS_INVALID_PARAMETER which is wrong.
Before I converted reply_open_and_X to create_file() we called
open_file_ntcreate directly. Passing through open&X for a filename that exists
as a directory ends up in open_directory after having tried open_file_ntcreate.
Some check in there returns NT_STATUS_INVALID_PARAMETER. With this additional
FILE_NON_DIRECTORY_FILE flag we get the correct error message back from
create_file_unixpath before trying open_directory().
Survives make test, but as this also touches the other open variants I would
like others to review this.
Volker
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torture test
This third patch cleans up by removing all of the code that is made
obsolete by the first patch. It should cause no functional changes.
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torture test
smbtorture4's BASE-DELETE:deltest17 was failing against win2k8,
win2k3, and winXPsp2 but passing against samba.
deltest17 does the following:
1. open file -> file is created
2. closes file
3. open file with DOC -> fnum1
4. check that DOC is not reported as being set from fnum1
5. opens file again Read Only -> fnum2
6. check that DOC is not reported as being set from either file handle
7. close fnum1 (the file handle that requested DOC to be set)
8. check if DOC is reported as being set from fnum2
* This is where windows and samba begin to diverge. Windows
reports that the DOC bit is set, while samba reports that it is not set.
9. close fnum2 (the last remaining open handle for the file)
10.See if the file has been deleted.
* On samba the file still exists. On windows the file was deleted.
The way open_file_ntcreate is written now, if an open has the DOC bit
set on the wire, DOC (fsp->initial_delete_on_close) is not set unless:
a. the open creates the file, or b. there is an open file handle with
a share_entry in the struct lck that has the
SHARE_MODE_ALLOW_INITIAL_DELETE_ON_CLOSE bit set (let's call it
SM_AIDOC).
My understanding of SM_AIDOC is that it was added to differentiate
between DOC being set on an open that creates a file vs an open that
opens an existing. As described in step 8/10 above, it appears that
windows does not make this differentiation.
To resolve this issue there are three patches. This first patch is a
simple proof of concept change that is sufficient to fix the bug. It
removes the differentiation in open_file_ntcreate, and updates
deltest17 to allow it to pass against win2k3/xp. This makes
open_file_ntcreate more closely match the semantics in open_directory
and rename_internals_fsp. This change also does not break any other
tests in BASE-DELETE or "make test". Specifically test deltest20b
which verifies the CIFSFS rename DOC semantics still passes :).
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This allows vfs modules that implement SMB_VFS_CREATE_FILE to access
some of the useful utility functions.
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This replaces the is_dos_path bool with a more future-proof argument.
The next step is to plumb INTERNAL_OPEN_ONLY through this flag instead
of overridding the oplock_request.
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Also removed open_file_ntcreate/open_file from proto.h so they can no
longer be called directly.
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