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content-class:	urn:content-classes:message
Subject:	Alloc_sd() fragile?
MIME-Version:	1.0
Date:	Tue, 5 Mar 2002 09:04:29 +1100
Message-ID:	<FC169E059D1A0442A04C40F86D9BA76008AB0C@itdomain003.itdomain.net.au>
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Thread-Topic:	Alloc_sd() fragile?
Thread-Index:	AcHDyI5cp+qAnZi0TwOyh9utrorobQ==
From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	<cygwin-developers AT cygwin DOT com>
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id g24M4aO12795

I've been tracking down a failure in the daemon code...

The interesting bit is how alloc_sd appears to work ~ 50% of the time.
The other interesting bit is how CreateFile (used to open the pipe)
appears to set the same error number as the GetSecurityDescriptorOwner
and Group calls do. (Oh, the SD is passed into the daemon and used in
creating and opening the file mappings, so that NT enforces the SHM
security for us.)

Any ideas? (Is this a roberts-system-is-stuffed quirk, a
don't-do-x-it-causes-this quirk?)

Rob


 2367 1395449 [main] shmctl_rmid 1568 transport_layer_pipes::close:
closing pipe 0x794
 3565 1399014 [main] shmctl_rmid 1568 alloc_sd: owner: Administrator
[500]
 2209 1401223 [main] shmctl_rmid 1568 alloc_sd: ACL-Size: 100
 1481 1402704 [main] shmctl_rmid 1568 alloc_sd: Created SD-Size: 176
 4610 1407314 [main] shmctl_rmid 1568 cygserver_request: connected to
server 0xA0112F8
 1770 1409084 [main] shmctl_rmid 1568 client_request::send:
this=0xA013878, conn=0xA0112F8

 2987 1412071 [main] shmctl_rmid 1568 client_request::send: header.cb =
4128
 1617 1413688 [main] shmctl_rmid 1568 transport_layer_pipes::write:
writing to pipe 0x760
 1146 1414834 [main] shmctl_rmid 1568 transport_layer_pipes::write:
writing to pipe 0x760
 2402 1417236 [main] shmctl_rmid 1568 client_request::send: Sent
request, size (4128)
 1590 1418826 [main] shmctl_rmid 1568 transport_layer_pipes::read:
reading from pipe 0x760

 8897 1427723 [main] shmctl_rmid 1568 transport_layer_pipes::read:
reading from pipe 0x760

 2623 1430346 [main] shmctl_rmid 1568 client_request::send: completed ok
 1718 1432064 [main] shmctl_rmid 1568 transport_layer_pipes::close:
closing pipe 0x760
 2301 1434365 [main] shmctl_rmid 1568 _write: write (1, 0xA012430, 25)
  759 1435124 [main] shmctl_rmid 1568 fhandler_console::write: A012430,
25
 1372 1436496 [main] shmctl_rmid 1568 fhandler_console::write: at 100(d)
state is 1
delete private key... ok
 3767 1440263 [main] shmctl_rmid 1568 fhandler_console::write: 25 =
write_console (,..25)
 1768 1442031 [main] shmctl_rmid 1568 _write: 25 = write (1, 0xA012430,
25)
 1645 1443676 [main] shmctl_rmid 1568 alloc_sd: owner: Administrator
[500]
 2182 1445858 [main] shmctl_rmid 1568 alloc_sd:
GetSecurityDescriptorOwner Win32 error 1305
 2088 1447946 [main] shmctl_rmid 1568 alloc_sd:
GetSecurityDescriptorGroup Win32 error 1305
 1963 1449909 [main] shmctl_rmid 1568 alloc_sd: ACL-Size: 100
  854 1450763 [main] shmctl_rmid 1568 alloc_sd: Created SD-Size: 176
 4095 1454858 [main] shmctl_rmid 1568 transport_layer_pipes::connect:
Error opening the pipe (1305)
 3432 1458290 [main] shmctl_rmid 1568 _write: write (1, 0xA012430, 23)
 1618 1459908 [main] shmctl_rmid 1568 fhandler_console::write: A012430,
23
 1564 1461472 [main] shmctl_rmid 1568 fhandler_console::write: at 99(c)
state is 1

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