This is the mail archive of the mailing list for the Cygwin project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Descriptor passing between process

On Thu, Jan 24, 2002 at 04:45:13PM +0300, Egor Duda wrote:
> Hi!
> Thursday, 24 January, 2002 Corinna Vinschen wrote:
> CV> On Thu, Jan 24, 2002 at 04:14:20PM +0300, Egor Duda wrote:
> >> CV> It's part of the API since 1.3.8-1.
> >> 
> >> Hmm. What change are you referring to? I don't see anything like this
> >> in the ChangeLog.
> CV> 2002-01-19  Mark Bradshaw  <>
> CV>         * cygwin.din: Add recvmsg and sendmsg.
> CV>         * Add cygwin_recvmsg and cygwin_sendmsg.
> CV>         * /usr/include/sys/socket.h: Add recvmsg and sendmsg.
> yes, but if i understand things correctly, Christophe was talking
> about passing file descriptors between processes by means of AF_UNIX
> sockets. btw, "Subject:" implies this :).
> this is done on unices via msg_control (or msg_accrights) field in msg
> structure. and unices ensure that the process which receives the
> message using recvmsg can use the descriptor for all kinds of file
> operations. in the case of cygwin, the receiver may get the value 3 in
> message packet, but won't be able to use it in "read (3, buf, sizeof (buf))"

Ouch.  I didn't read your message correctly before sending the
reply to Christophe's mail.


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                      
Red Hat, Inc.

Unsubscribe info:
Bug reporting:

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]