From nobody Sun Feb 8 22:49:48 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1562948661; cv=none; d=zoho.com; s=zohoarc; b=fc+cd7WAKaLDR6EAXTPFtjzeAguHaXcONHfokaMS0yOQjeoVbqfvTodNKIBAQ4tsuL7DJeYcLSIHFS+uNHpoxGE0JgKF/UERTBsX6f01xqTqL4JNU+Z3PK7wdsBajP9IO/8OHXfFpuWSnh3KoBx4lDAZISeJNxakcV3qvSt0WRI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1562948661; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=KJfNM/bNLwPGWqfmjYHGsDqLxD0Jth6JGKjjSQTenBs=; b=MB2dwssvm/fatXw7QVC+DDlDibLYqbTb+P6DymlsMtE3qeo1mJz8tynTckeR8hd7MNL/5tiBhOPXasFyJ7PSWJCJANcUwpNiPlsBpZ78e5bgYonubBviSV/0USWRdUrcPwEsH3CZHYQrOvd1wwfQODxG3IWDgarbBJ349aGyqbE= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 1562948661315876.7400415357399; Fri, 12 Jul 2019 09:24:21 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2FF0BA3B65; Fri, 12 Jul 2019 16:24:19 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F0A6F196BF; Fri, 12 Jul 2019 16:24:18 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 8EA2F1833001; Fri, 12 Jul 2019 16:24:18 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id x6CGO4Wm020141 for ; Fri, 12 Jul 2019 12:24:04 -0400 Received: by smtp.corp.redhat.com (Postfix) id 469001001B11; Fri, 12 Jul 2019 16:24:04 +0000 (UTC) Received: from mx1.redhat.com (ext-mx04.extmail.prod.ext.phx2.redhat.com [10.5.110.28]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4134C1001B03 for ; Fri, 12 Jul 2019 16:24:04 +0000 (UTC) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 211528110A for ; Fri, 12 Jul 2019 16:24:03 +0000 (UTC) Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x6CGIV5o021837 for ; Fri, 12 Jul 2019 12:24:02 -0400 Received: from e16.ny.us.ibm.com (e16.ny.us.ibm.com [129.33.205.206]) by mx0a-001b2d01.pphosted.com with ESMTP id 2tpw15ssnd-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 12 Jul 2019 12:24:02 -0400 Received: from localhost by e16.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 12 Jul 2019 17:24:01 +0100 Received: from b01cxnp22034.gho.pok.ibm.com (9.57.198.24) by e16.ny.us.ibm.com (146.89.104.203) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 12 Jul 2019 17:23:58 +0100 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x6CGNvDK40305126 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 12 Jul 2019 16:23:57 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BD8DAAC05E; Fri, 12 Jul 2019 16:23:57 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A7427AC062; Fri, 12 Jul 2019 16:23:57 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Fri, 12 Jul 2019 16:23:57 +0000 (GMT) From: Stefan Berger To: libvir-list@redhat.com Date: Fri, 12 Jul 2019 12:23:48 -0400 In-Reply-To: <20190712162354.2366936-1-stefanb@linux.vnet.ibm.com> References: <20190712162354.2366936-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19071216-0072-0000-0000-0000044856CC X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00011415; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000286; SDB=6.01231169; UDB=6.00648543; IPR=6.01012454; MB=3.00027693; MTD=3.00000008; XFM=3.00000015; UTC=2019-07-12 16:24:00 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19071216-0073-0000-0000-00004CB89C54 Message-Id: <20190712162354.2366936-15-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-07-12_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=913 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907120170 X-Greylist: Sender passed SPF test, Sender IP whitelisted by DNSRBL, ACL 238 matched, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Fri, 12 Jul 2019 16:24:03 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Fri, 12 Jul 2019 16:24:03 +0000 (UTC) for IP:'148.163.156.1' DOMAIN:'mx0a-001b2d01.pphosted.com' HELO:'mx0a-001b2d01.pphosted.com' FROM:'stefanb@linux.vnet.ibm.com' RCPT:'' X-RedHat-Spam-Score: -0.698 (RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_NONE) 148.163.156.1 mx0a-001b2d01.pphosted.com 148.163.156.1 mx0a-001b2d01.pphosted.com X-Scanned-By: MIMEDefang 2.78 on 10.5.110.28 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-loop: libvir-list@redhat.com Cc: marcandre.lureau@redhat.com, Stefan Berger Subject: [libvirt] [PATCH v5 14/20] utils: Extend virCommandProcessIO to include the send buffers X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 12 Jul 2019 16:24:19 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Extend virCommandProcessIO to include the send buffers in the poll loop. Signed-off-by: Stefan Berger Reviewed-by: Daniel P. Berrang=C3=A9 --- src/util/vircommand.c | 62 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 61 insertions(+), 1 deletion(-) diff --git a/src/util/vircommand.c b/src/util/vircommand.c index bb9ecdf348..976231444e 100644 --- a/src/util/vircommand.c +++ b/src/util/vircommand.c @@ -1815,6 +1815,61 @@ virCommandSetSendBuffer(virCommandPtr cmd, } =20 =20 +static int +virCommandSendBuffersFillPollfd(virCommandPtr cmd, + struct pollfd *fds, + int startidx) +{ + size_t i, j; + + for (i =3D 0, j =3D 0; i < virCommandGetNumSendBuffers(cmd); i++) { + if (cmd->sendBuffers[i].fd >=3D 0) { + fds[startidx + j].fd =3D cmd->sendBuffers[i].fd; + fds[startidx + j].events =3D POLLOUT; + fds[startidx + j].revents =3D 0; + j++; + } + } + + return j; +} + + +static int +virCommandSendBuffersHandlePoll(virCommandPtr cmd, + struct pollfd *fds) +{ + size_t i; + int done; + + for (i =3D 0; i < virCommandGetNumSendBuffers(cmd); i++) { + if (fds->fd =3D=3D cmd->sendBuffers[i].fd) + break; + } + if (i =3D=3D virCommandGetNumSendBuffers(cmd)) + return 0; + + done =3D write(fds->fd, + cmd->sendBuffers[i].buffer + cmd->sendBuffers[i].offset, + cmd->sendBuffers[i].buflen - cmd->sendBuffers[i].offset); + if (done < 0) { + if (errno =3D=3D EPIPE) { + VIR_DEBUG("child closed PIPE early, ignoring EPIPE " + "on fd %d", cmd->sendBuffers[i].fd); + VIR_FORCE_CLOSE(cmd->sendBuffers[i].fd); + } else if (errno !=3D EINTR && errno !=3D EAGAIN) { + virReportSystemError(errno, "%s", + _("unable to write to child input")); + return -1; + } + } else { + cmd->sendBuffers[i].offset +=3D done; + if (cmd->sendBuffers[i].offset =3D=3D cmd->sendBuffers[i].buflen) + VIR_FORCE_CLOSE(cmd->sendBuffers[i].fd); + } + return 0; +} + /** * virCommandSetInputBuffer: * @cmd: the command to modify @@ -2169,7 +2224,7 @@ virCommandProcessIO(virCommandPtr cmd) goto cleanup; ret =3D -1; =20 - if (VIR_ALLOC_N(fds, 3) < 0) + if (VIR_ALLOC_N(fds, 3 + virCommandGetNumSendBuffers(cmd)) < 0) goto cleanup; =20 for (;;) { @@ -2195,6 +2250,8 @@ virCommandProcessIO(virCommandPtr cmd) nfds++; } =20 + nfds +=3D virCommandSendBuffersFillPollfd(cmd, fds, nfds); + if (nfds =3D=3D 0) break; =20 @@ -2267,6 +2324,9 @@ virCommandProcessIO(virCommandPtr cmd) if (inoff =3D=3D inlen) VIR_FORCE_CLOSE(cmd->inpipe); } + } else if (fds[i].revents & (POLLOUT | POLLHUP | POLLERR)) { + if (virCommandSendBuffersHandlePoll(cmd, &fds[i]) < 0) + goto cleanup; } } } --=20 2.20.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list