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To count LDB objects use variables of type "unsigned (int)" or "long long int"
on binary or downto searches.
To count characters in strings use "size_t".
To calculate differences between pointers use "ptrdiff_t".
The samldb module overrides the error code for some returns when
handling primaryGroupID. We need to take the error from the async
callback to allow this to work reliably
This helps pin down where errors occour, by printing a call stack and
setting error strings and trace messages in the transaction case.
Andrew Bartlett
When a top level method in a module returns an error, it is supposed
to call ldb_module_done(). We ran across a case where this wasn't
done, and then found that in fact that are hundreds of similar cases
in our modules. It took Andrew and I a full day to work out that this
was the cause of a subtle segv in another part of the code.
To try to prevent this happening again, this patch changes
ldb_next_request() to catch the error by checking if a module
returning an error has called ldb_module_done(). If it hasn't then the
call is made on behalf of the module.
The reason we need this is to make multi-tdb transactions safe, with
the partition module. The linked_attributes and repl_meta_data modules
now do extra processing when the transaction ends, and that processing
can fail. When it fails we need to cancel the transaction, which we
can only do if the hook is on the prepare commit instead of the end
transaction call. Otherwise the partition module cannot ensure that no
commit has been done on another partition.
Separate again the public from the private headers.
Add a new header specific for modules.
Also add service function for modules as now ldb_context and ldb_module are
opaque structures for them.
Current glibc libraries include a function called init_module(). If we
use the same name, then a dlsym() can find the glibc function if the
module doesn't have an initialisation function.
In ldb, none of our modules have an init_module(), so we end up calling the libc
functions with bogus arguments.
(This used to be commit 1b0621068998590e7b1e9528b78744dcd2cd5909)
Conflicts:
source/build/smb_build/header.pm
source/build/smb_build/makefile.pm
source/lib/ldb/include/ldb_private.h
(This used to be commit 1a646af0647f021d99473a8991c35e616a423ea6)
modules.
This will be useful when we start enforcing validity in base DNs.
Andrew Bartlett
(This used to be commit aa8348a27a6938a1a26d4a7ed3b7405966202ad8)
