samba shares access issue in Solaris from a MT program

David Collier-Brown davec-b at
Fri Sep 24 17:18:07 GMT 2004

On Fri, 24 Sep 2004, Narayana Pattipati wrote:
> [Nice description of problem redacted.]
>>If samba is build with "-mt" flags, then the errno will be pointed
>>to __errno() macro, instead of global errno, and thread executing samba
>>code will be able to access correct errno.
>>I have few open questions based on this:
>>a) I read from samba site that its not MT safe. But since the code runs in
>>   one thread only, is it OK to build samba with "-mt" compiler flags ?
>>   What would be the side effects if samba is build with -mt compiler
>>   flags ?

Richard Sharpe wrote:D>
> I cannot see any problems with this, off my head.

	From my experience with the compiler/linkers
	on Sun, the only substantiative change is the
	use of a thread-aware errno mechanism. If the
	program is unthreaded, the errno will work
	normally even with -mt specified.

	Of course, it is the responsibility of the
	caller to protect the library against concurrent
	calls via locking, but that and -mt are what
	we've used in the past to make non-thread-safe
	libraries usable.

	I'd like to suggest that the configure script
	be changed to add -mt to the solaris linker
	options for Solaris (only).
ps: would you like this submitted via bugzilla,for your records?
David Collier-Brown,  | Always do right. This will gratify
davecb at    | some people and astonish the rest
                       |                      -- Mark Twain

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