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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().
We need to allow to set filesystem capabilities from the default vfs in
create_conn_struct() in order to find mixed-case filenames. Thanks Volker!
This one was hard to find, so a little longer explanation:
When a Windows client tries to upload e.g. the Xerox 4110 PS driver, the client
first uploads the driver files to the [print$] share. Some of them (in this case
the Windows Postscript drivers) are with uppercase filenames while some of them
(like the PPD file) are in lowercase. After the driver upload the client issues
the spoolss_AddPrinterDriverEx() call with level 6. There the client tries to
add the PPD file with an uppercase filename (while having stored it in lowercase
on the server). The internal spoolss add driver functions then could not find the
appropriate filename while trying to move them to the version subdirectory (in
this case W32X86/3) and fails then entire spoolss_AddPrinterDriverEx() call.
With this fix, the convert_unix_name() name finds the correct file and
the spoolss_AddPrinterDriverEx() succeeds.
Guenther
* VFS_OP_READDIR can now provide stat information, take advantage of it
if it's available
* is_visible_file(): optimistically expect the provided stat buffer is
already valid
* dptr_ReadDirName(): refactor code for easier readability, functionality
is the same
Jeremy, setting "exists" to True in _dfs_Add prevented the initial creation of
a new symlink for me, because the SMB_VFS_UNLINK failed. This also exists in
3.2. I only check it into 3.3 as I would like you to look at it first.
Thanks,
Volker
(This used to be commit f58b098a41)
At least form_junctions() does not initialize refcount, and I don't see it in
get_referred_path(). For the latters, the callers might initialize it. But even
if they did, I think parse_msdfs_symlink() should unconditionally return the
number of referrals it found. I don't think it makes sense to count them up
from somewhere else.
(This used to be commit 7317211348)
by name code from conn, we were already doing the
same check in the dfs_redirect() function, so move
it into parse_dfs_path() instead.
Jeremy.
(This used to be commit 8a7c6df122)
that sets the DFS bit on pathnames but doesn't
send DFS paths. This causes lookups to fail as
the smbd/msdfs.c code now just eats the first
two parts of the pathname and uses the rest as
the local path. The previous hostname check
used to protect us from that as we knew that
when the hostname was invalid it was a local
path (and a broken client).
I didn't want to put that check back in, but
came up with another idea - even though the
hostname can be a different one, the sharename
must be valid on this machine. So we can check
for a valid sharename instead.
Jeremy.
(This used to be commit e1cda82f6f)
bugs in various places whilst doing this (places that assumed
BOOL == int). I also need to fix the Samba4 pidl generation
(next checkin).
Jeremy.
(This used to be commit f35a266b3c)
We now accept both \\server\tmp and \server\tmp. There are other places
where this might be necessary, but at least the functionality is a bit
easier now.
(This used to be commit 25cc27df97)
There are now ony 17 pstrings left in reply.c,
and these will be easy to remove (and I'll be
doing that shortly). Had to fix an interesting
bug in pull_ucs2_base_talloc() when a source
string is not null terminated :-).
Jeremy.
(This used to be commit 0c9a8c4dff)
and make valgrindtest. Final step will be to change srvstr_get_path()
to return talloced memory in the major codepaths.
Jeremy.
(This used to be commit cf6b6f9c3a)
----------------------------------------------------------
In rare cases, Samba 3.0.25b shows directory contents at the wrong
position in the file tree when displaying a subdirectory of a DFS link.
The problem occurs whenever Windows XP asks for a DFS referral for a
subdirectory of a DFS link with a trailing backslash.
Windows does not do this very often, but we saw it several times per day
on our central DFS server.
smbd/msdfs.c, dfs_path_lookup() does the following with the requested
path:
- in line 390, the local copy 'localpath' is 'unix_convert'ed; the
trailing backslash is removed inside unix_convert
- in lines 417-20, 'dfspath' (another copy of the requested path) is
mangled another way without removing trailing backslashes
That's why the following loop (lines 435-461) that is meant to
synchronously cut off the last path component from both strings until it
comes to a DFS link, does not handle both strings the same. When the
original path ended with a backslash, 'canon_dfspath' has always one
component more than 'localpath', so that *consumedcntp gets too big in
line 446. This value is reported to the client.
----------------------------------------------------------
Bug #4860.
Jeremy.
(This used to be commit 42d1c6713a)
why check_path_syntax should not be able to run in-line. The destination
pointer either walks side by side with the source pointer or is
decremented. So as far as I can see s>=d is true throughout the whole
routine.
Jeremy, I'm checking this only into 3_0 for now. Please review and ack
or directly merge this to 3_0_26.
Thanks,
Volker
(This used to be commit 34a13c82a3)
"host msdfs = true" to be set in the [global] section
and allow Vista to see shares with "msdfs root = yes"
and "msdfs root = no" off the same server. Down
to an error message really :-).
Jeremy.
(This used to be commit 1a0f69bb21)
were not able to connect to the rewritten dfs code as
they set the dfs flag bit but then send local paths.
Now that our dfs code is a *lot* more robust in
detecting this sort of braindamage we can just
call into it directly on getting a DFS flag
and let the parser sort it out without having
to check it's actually connecting to a dfs
enabled share (I'm proud of this code :-).
Jeremy.
(This used to be commit 8c4d929c76)
works from smbclient and Windows, and I am promising to
support and fix both client and server code moving forward.
Still need to test the RPC admin support but I haven't
changed that code.
Jeremy.
(This used to be commit 7a7862c01d)
pathnames. When we're working out how much we've
consumed we need to backtrack by either a '/' or '\\'
component, as both are valid separators.
Jeremy.
(This used to be commit 1722ea20db)
