Date: Tue, 13 Jun 2006 14:33:35 +0000 (UTC) From: Maxim Konovalov <maxim@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern uipc_usrreq.c Message-ID: <200606131433.k5DEXZTW041253@repoman.freebsd.org>
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maxim 2006-06-13 14:33:35 UTC
FreeBSD src repository
Modified files:
sys/kern uipc_usrreq.c
Log:
o There are two methods to get a process credentials over the unix
sockets:
1) A sender sends SCM_CREDS message to a reciever, struct cmsgcred;
2) A reciever sets LOCAL_CREDS socket option and gets sender
credentials in control message, struct sockcred.
Both methods use the same control message type SCM_CREDS with the
same control message level SOL_SOCKET, so they are indistinguishable
for the receiver. A difference in struct cmsgcred and struct sockcred
layouts may lead to unwanted effects.
Now for sockets with LOCAL_CREDS option remove all previous linked
SCM_CREDS control messages and then add a control message with
struct sockcred so the process specifically asked for the peer
credentials by LOCAL_CREDS option always gets struct sockcred.
PR: kern/90800
Submitted by: Andrey Simonenko
Regres. tests: tools/regression/sockets/unix_cmsg/
MFC after: 1 month
Revision Changes Path
1.168 +24 -10 src/sys/kern/uipc_usrreq.c
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