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This is meant as a replacement for the internal tdb. To me it seems a bit silly
that for in-memory structures we do our own memory management. With this rbt
based approach we can make use of the system-supplied malloc.
Patch 1 of 3:
- Patch 1 adds the new variables
- Patch 2 makes uses of them for files belonging to the "state" path
and the "code pages" path
This patch seemed more easily acceptable, which explains why we
separated it from patch 3
- Patch 3 reassigns files to the "cache" path. Indeed all "debatable"
changes have been moved to that one
The point is adding:
- a path for non discardable state data: basically all TDB files
that may need to be backed up
- a path for shared data: mostly codepage stuff
- a path for cache data to host files such as
browse.dat, printers.tbd, <printer>.tdb
All these are currently mixed in "libdir" (${prefix}/lib/samba by default).
The patch keeps these new paths to point to ${prefix}/lib/samba by default
and does therefore not change the software behaviour. Used alone, it just
adds unused variables...so it can safely be used in sources without any
behaviour change and no impact on Samba developers work.
Hi!
Can you check and push them?
Thanks,
Volker
From b488af5905e2dee12a1a72a3b40801ae5c26f24f Mon Sep 17 00:00:00 2001
From: Volker Lendecke <vl@sernet.de>
Date: Sat, 27 Oct 2007 14:20:09 +0200
Subject: [PATCH] Fix some warnings and errors
This adds the two functions talloc_stackframe() and talloc_tos().
* When a new talloc stackframe is allocated with talloc_stackframe(), then
* the TALLOC_CTX returned with talloc_tos() is reset to that new
* frame. Whenever that stack frame is TALLOC_FREE()'ed, then the reverse
* happens: The previous talloc_tos() is restored.
*
* This API is designed to be robust in the sense that if someone forgets to
* TALLOC_FREE() a stackframe, then the next outer one correctly cleans up and
* resets the talloc_tos().
The original motivation for this patch was to get rid of the
sid_string_static & friends buffers. Explicitly passing talloc context
everywhere clutters code too much for my taste, so an implicit
talloc_tos() is introduced here. Many of these static buffers are
replaced by a single static pointer.
The intended use would thus be that low-level functions can rather
freely push stuff to talloc_tos, the upper layers clean up by freeing
the stackframe. The more of these stackframes are used and correctly
freed the more exact the memory cleanup happens.
This patch removes the main_loop_talloc_ctx, tmp_talloc_ctx and
lp_talloc_ctx (did I forget any?)
So, never do a
tmp_ctx = talloc_init("foo");
anymore, instead, use
tmp_ctx = talloc_stackframe()
:-)
Volker
into a tiny winbindd DsGetDcName client. This still does not solve the case of
using the locator from within winbindd itself but at least gencache.tdb and
others are no longer corrupted.
Guenther