Date: Wed, 10 Feb 1999 23:01:48 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Peter Jeremy <peter.jeremy@auss2.alcatel.com.au> Cc: tlambert@primenet.com, hackers@FreeBSD.ORG Subject: Re: portability of shm, mmap, pipes and socket IPC Message-ID: <199902110701.XAA88892@apollo.backplane.com> References: <99Feb11.162122est.40373@border.alcanet.com.au>
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:As far as I can tell, this is handled correctly.
:
:through lines 725-746, unwinding any partially commited operations.
:Then there's a tsleep() on semaptr (which is the semaphore
:descriptor). If the tsleep returns normally, the whole thing is
:repeated courtesy of the for loop covering lines 671-786.
:...
Looks like the intention of the code is correct to me too,
though not being a semaphore expert there could still be a bug.
:EIDRM was added (I believe by sos) sometime after 2.2.6. It's only
:used by sysv_msg.c and sysv_sem.c - and from what I can see, the code
:is all protected by #ifdef EIDRM's, so the code should work correctly,
:whether or not EIDRM is defined. Someone with commit priv's just
:needs to remove the comment saying it doesn't exist.
:
:Peter
I added an #error inside the #ifdef EIDRM and the compile bombed,
so EIDRM is definitely defined from the point of view of the module.
-Matt
Matthew Dillon
<dillon@backplane.com>
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