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This patch makes Samba compile cleanly with -Wwrite-strings.
- That is, all string literals are marked as 'const'. These strings are
always read only, this just marks them as such for passing to other functions.
What is most supprising is that I didn't need to change more than a few lines of code (all
in 'net', which got a small cleanup of net.h and extern variables). The rest
is just adding a lot of 'const'.
As far as I can tell, I have not added any new warnings - apart from making all
of tdbutil.c's function const (so they warn for adding that const string to
struct).
Andrew Bartlett
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Currently this calls back to mapping.c, but we have the framework
to get the information into LDAP and the passdb.tdb (should we? I
think so..).
This has received moderate testing with net rpc vampire and
usrmgr. I found the add_groupmem segfault in add_aliasmem as
well, but that will be another checkin.
Volker
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The actual design change is relitivly small however:
It all goes back to jerry's 'BOOL store', added to many of the elements in a
SAM_ACCOUNT. This ensured that smb.conf defaults did not get 'fixed' into
ldap. This was a great win for admins, and this patch follows in the same way.
This patch extends the concept - we don't store values back into LDAP unless
they have been changed. So if we read a value, but don't update it, or we
read a value, find it's not there and use a default, we will not update
ldap with that value. This reduced clutter in our LDAP DB, and makes it
easier to change defaults later on.
Metze's particular problem was that when we 'write back' an unchanged value,
we would clear any muliple values in that feild. Now he can still have his
mulitivalued 'uid' feild, without Samba changing it for *every* other
operation.
This also applies to many other attributes, and helps to eliminate a nasty
race condition. (Time between get and set)
This patch is big, and needs more testing, but metze has tested usrmgr, and
I've fixed some pdbedit bugs, and tested domain joins, so it isn't compleatly
flawed ;-).
The same system will be introduced into the SAM code shortly, but this fixes
bugs that people were coming across in production uses of Samba 3.0/HEAD, hence
it's inclusion here.
Andrew Bartlett
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All passdb modules need to include a 'magic' macro that creates simple
'return my version number' function.
(from metze and jelmer)
Also fix up the dir_drive autosubsitute code to correctly use lp_logon_drive().
(from metze)
Andrew Bartlett
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passdb interface change, now the passdb modules will be asked for SID not for rid, the modules have been updated with a passthrough function that calls the old getsampwrid() functions.
srv_samr_nt.c functions that made use of the pdb_getsampwrid funcion has been updated to use the SID one.
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The idea is that pdb_add_sam_account() should have a non-const SAM_ACCOUNT,
and update some of the the properties generated during the add.
Andrew Bartlett
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<jelmer@nl.linux.org>.
This patch also includes major rework of pdbedit to use popt, and the addition
of -i paramter (allowing the user to specify which PDBs is being
operated on) and -e to export a pdb - useful for backup and testing etc.
Use of -i and -e gets us pdb2pdb functionality for transition between backends,
much like the sam2sam in TNG.
Andrew Bartlett
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we still need to free gid<->rid mapping and few other stuff
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This allow the user to select
'passdb backend = plugin : /path/to/plugin.so : pluging args'
And load any arbitary plugin. Apparently Jelmer has a mysql plugin in the
works - hence this patch.
We probably need to rework the interface a bit before 3.0 (add versioning of
some kind) but this is a good start.
Andrew Bartlett
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Changed "SMB/Netbios" to "SMB/CIFS" in file header.
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Samba now features a pluggable passdb interface, along the same lines as the
one in use in the auth subsystem. In this case, only one backend may be active
at a time by the 'normal' interface, and only one backend per passdb_context is
permitted outside that.
This pluggable interface is designed to allow any number of passdb backends to
be compiled in, with the selection at runtime. The 'passdb backend' paramater
has been created (and documented!) to support this.
As such, configure has been modfied to allow (for example) --with-ldap and the
old smbpasswd to be selected at the same time.
This patch also introduces two new backends: smbpasswd_nua and tdbsam_nua.
These two backends accept 'non unix accounts', where the user does *not* exist
in /etc/passwd. These accounts' don't have UIDs in the unix sense, but to
avoid conflicts in the algroitmic mapping of RIDs, they use the values
specified in the 'non unix account range' paramter - in the same way as the
winbind ranges are specifed.
While I was at it, I cleaned up some of the code in pdb_tdb (code copied
directly from smbpasswd and not really considered properly). Most of this was
to do with % macro expansion on stored data. It isn't easy to get the macros
into the tdb, and the first password change will 'expand' them. tdbsam needs
to use a similar system to pdb_ldap in this regard.
This patch only makes minor adjustments to pdb_nisplus and pdb_ldap, becouse I
don't have the test facilities for these. I plan to incoroprate at least
pdb_ldap into this scheme after consultation with Jerry.
Each (converted) passdb module now no longer has any 'static' variables, and
only exports 1 init function outside its .c file.
The non-unix-account support in this patch has been proven! It is now possible
to join a win2k machine to a Samba PDC without an account in /etc/passwd!
Other changes:
Minor interface adjustments:
pdb_delete_sam_account() now takes a SAM_ACCOUNT, not a char*.
pdb_update_sam_account() no longer takes the 'override' argument that was being
ignored so often (every other passdb backend). Extra checks have been added in
some places.
Minor code changes:
smbpasswd no longer attempts to initialise the passdb at startup, this is
now done on first use.
pdbedit has lost some of its 'machine account' logic, as this behaviour is now
controlled by the passdb subsystem directly.
The samr subsystem no longer calls 'local password change', but does the pdb
interactions directly. This allow the ACB_ flags specifed to be transferred
direct to the backend, without interference.
Doco:
I've updated the doco to reflect some of the changes, and removed some paramters
no longer applicable to HEAD.
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This is more of a note to myself. In not used anywhere yet.
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