Re: [libvirt] [PATCH 6/8] Add client side support for FD passing

From: "Daniel P. Berrange&quot;&lt;berrange(a)redhat.com&gt; Extend the RPC client code to allow file descriptors to be sent to the server with calls, and received back with replies. * src/remote/remote_driver.c: Stub extra args * src/libvirt_private.syms, src/rpc/virnetclient.c, src/rpc/virnetclient.h, src/rpc/virnetclientprogram.c, src/rpc/virnetclientprogram.h: Extend APIs to allow FD passing --- src/libvirt_private.syms | 4 +++ src/remote/remote_driver.c | 1 + src/rpc/virnetclient.c | 25 +++++++++++++++++ src/rpc/virnetclient.h | 2 + src/rpc/virnetclientprogram.c | 58 +++++++++++++++++++++++++++++++++++++++- src/rpc/virnetclientprogram.h | 4 +++ 6 files changed, 92 insertions(+), 2 deletions(-) msg->header.serial = serial; msg->header.proc = proc; + msg->nfds = noutfds; + if (VIR_ALLOC_N(msg->fds, msg->nfds)< 0) { + virReportOOMError(); + goto error; + } + for (i = 0 ; i< msg->nfds ; i++) { + if ((msg->fds[i] = dup(outfds[i]))< 0) { + virReportSystemError(errno, + _("Cannot duplicate FD %d"), + outfds[i]); + goto error; + } + if (virSetInherit(msg->fds[i], false)< 0) { + virReportSystemError(errno, + _("Cannot set close-on-exec %d"), + msg->fds[i]);