From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=yandex-team.ru Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1757964868766799.0183968462062; Mon, 15 Sep 2025 12:34:28 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyEvo-0001sC-3g; Mon, 15 Sep 2025 15:32:08 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvK-0001jB-8x; Mon, 15 Sep 2025 15:31:39 -0400 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEv6-0001tj-PN; Mon, 15 Sep 2025 15:31:38 -0400 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:94a9:0:640:a3fa:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 6B2D78099F; Mon, 15 Sep 2025 22:31:13 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-2fR8Dfoi; Mon, 15 Sep 2025 22:31:13 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964673; bh=wsoWvxGRkjhfwaoMYAfFW+x0chbESno/XD13mprGv/0=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=woAgGvQKjU+r3q8R4+1Cr3ehaGK5fpZnkQlddtyyMTd5Ktcgq7NOklYPJfqNO8R/t XCbhKj/zzm1eRJHBi1RBI3Tkx8st3MtvPCiZ8INd12zKZRNG3T0hjw00yOZvKtTmIF PSl6nEPm8zQfk7+VEjaQy+oaN3BI5qh6ZDl4i3nA= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com, Paolo Bonzini Subject: [PATCH v4 01/12] char-socket: tcp_chr_recv(): drop extra _set_(block, cloexec) Date: Mon, 15 Sep 2025 22:30:53 +0300 Message-ID: <20250915193105.230085-2-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, T_SPF_TEMPERROR=0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1757964870767116600 qio_channel_readv_full() guarantees BLOCKING and CLOEXEC states for incoming descriptors, no reason to call extra ioctls. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- chardev/char-socket.c | 14 -------------- 1 file changed, 14 deletions(-) diff --git a/chardev/char-socket.c b/chardev/char-socket.c index 1e8313915b..b1ce5d01c7 100644 --- a/chardev/char-socket.c +++ b/chardev/char-socket.c @@ -307,20 +307,6 @@ static ssize_t tcp_chr_recv(Chardev *chr, char *buf, s= ize_t len) s->read_msgfds_num =3D msgfds_num; } =20 - for (i =3D 0; i < s->read_msgfds_num; i++) { - int fd =3D s->read_msgfds[i]; - if (fd < 0) { - continue; - } - - /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ - qemu_socket_set_block(fd); - -#ifndef MSG_CMSG_CLOEXEC - qemu_set_cloexec(fd); -#endif - } - if (ret =3D=3D QIO_CHANNEL_ERR_BLOCK) { errno =3D EAGAIN; ret =3D -1; --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964961; cv=none; d=zohomail.com; s=zohoarc; b=NoeV6WcCsSZxbWyuvilblyib9jjVc2F4U0489/Ie9Cxrmos/GrNiXC5C5wQSXXe6dYocXpcjwt24Eps9ea76IsYy7hneN7Fe6CHJRBzr0xw59dPeirp/Wc9ninUT6b90g8OOWFhdgLAWV6fGzRD3pHRjGxVFWiC2auTgZjd2IBI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757964961; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=lL9NT3QdoPBXUIiDbTg52f0I3fPCeIR3oGxvpY7x4CI=; b=F+YaMRHUBCsn2Nx0d736EPWczvtqg9avTdMNBocUg2i+ywLw87QzgJCoD6+igSVXg+pciaB4r2nW0GVwktpSocLenyJnS9AY/oyfLCKOqrkVhN8z+uUfy3CWYVFV6cafr10/4i/KTjm89dYvFsOO4BblU22WeuEFfD/8TvTfByE= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1757964961795537.5659867996823; Mon, 15 Sep 2025 12:36:01 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyEvo-0001rk-46; Mon, 15 Sep 2025 15:32:08 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvW-0001ni-Th; Mon, 15 Sep 2025 15:31:50 -0400 Received: from forwardcorp1d.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEv6-0001tl-OY; Mon, 15 Sep 2025 15:31:50 -0400 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:94a9:0:640:a3fa:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id DDE38809A0; Mon, 15 Sep 2025 22:31:13 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-Jw0kRCQ2; Mon, 15 Sep 2025 22:31:13 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964673; bh=lL9NT3QdoPBXUIiDbTg52f0I3fPCeIR3oGxvpY7x4CI=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=vQ7gCbW1Y4zo7mEMX7FCiq9AVWgxz9xDhdDcF0W38czcCRuvB33JwvHSXzJbxGhHo oOjOxIZakhj9mSfA1QUx5wU0GoHLs92pK86auCPKI0fwT3YF9kG3lMXIGFUUMaLr/5 5cjCM2zzohEa6sM912DpnoaAeyL2ytvNUDWSc3yo= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com, Paolo Bonzini Subject: [PATCH v4 02/12] char-socket: tcp_chr_recv(): add comment Date: Mon, 15 Sep 2025 22:30:54 +0300 Message-ID: <20250915193105.230085-3-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964963878116600 Add comment, to stress that the order of operation (first drop old fds, second check read status) is intended. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- chardev/char-socket.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/chardev/char-socket.c b/chardev/char-socket.c index b1ce5d01c7..1be078dfc0 100644 --- a/chardev/char-socket.c +++ b/chardev/char-socket.c @@ -294,7 +294,12 @@ static ssize_t tcp_chr_recv(Chardev *chr, char *buf, s= ize_t len) } =20 if (msgfds_num) { - /* close and clean read_msgfds */ + /* + * Close and clean previous read_msgfds, they are obsolete at + * this point, regardless result of new call to + * qio_channel_readv_full(). + */ + for (i =3D 0; i < s->read_msgfds_num; i++) { close(s->read_msgfds[i]); } --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964923; cv=none; d=zohomail.com; s=zohoarc; b=CVzC2d6GTO1Wf/+8W7WcmK3zXItmuD0KjLFZ82IkTUCZwGs2qIgzk2h+MBUOeaLEY+QF2goJRiJBH3bASsjgMJUQBO0ebG6T3gDXmjTlMA4pwCxuoXAhSfRas9nQj6ZrH2XjfGIrsxwBemGMa1MSrOuq7rigT4fmM+f8hbBnpy0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757964923; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=WvzQDHe9ns7kfUBciD1JZDDf4ABJmycTS10fI1l005c=; b=EGXzJelWfPnipjdO2txVc+Jtq026s3/wyTyFlZkQcuqT9Qv4KYJebTQjAyClhgSnhc9G8M2B8aPeRnEwYAPJz4yJmLZT5K1ulRr2fcplfkrwfGHZUK1G1I+MkJbbDphhf4KSjlHYbEIxGXbXohxjL9yjpSEeR4WrEfA1Xaneyns= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1757964923660150.6667323045424; Mon, 15 Sep 2025 12:35:23 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyEvT-0001l1-Vc; Mon, 15 Sep 2025 15:31:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvJ-0001iq-9C; Mon, 15 Sep 2025 15:31:37 -0400 Received: from forwardcorp1d.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEv5-0001tq-Hv; Mon, 15 Sep 2025 15:31:34 -0400 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:94a9:0:640:a3fa:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 7CB98809A2; Mon, 15 Sep 2025 22:31:14 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-SHEk1rii; Mon, 15 Sep 2025 22:31:14 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964674; bh=WvzQDHe9ns7kfUBciD1JZDDf4ABJmycTS10fI1l005c=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=C5bayRsumkPSW6cD+WjpX8s4ydZSJWxggvFUlUgNkZRG6UyvmvdeFnn3OIQoTVaa/ 1mbuDX3r0ySpi4GYfDQBY8sp7P5erTwhN0uZu8eYuPG7qcKFkgsalEIeZv20xaYNj7 k5miajzUccmkwN6H9V+MV4aiCjQzPo4/4FgbUMqs= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com, Paolo Bonzini , Stefan Weil Subject: [PATCH v4 03/12] util: add qemu_set_blocking() function Date: Mon, 15 Sep 2025 22:30:55 +0300 Message-ID: <20250915193105.230085-4-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964925478116600 In generic code we have qio_channel_set_blocking(), which takes bool parameter, and qemu_file_set_blocking(), which as well takes bool parameter. At lower fd-layer we have a mess of functions: - enough direct calls to Unix-specific g_unix_set_fd_nonblocking() (of course, all calls are out of Windows-compatible code), which is glib specific with GError, which we can't use, and have to handle error-reporting by hand after the call. and several platform-agnostic qemu_* helpers: - qemu_socket_set_nonblock(), which asserts success for posix (still, in most cases we can handle the error in better way) and ignores error for win32 realization - qemu_socket_try_set_nonblock(), providing and error, but not errp, so we have to handle it after the call - qemu_socket_set_block(), which simply ignores an error Note, that *_socket_* word in original API, which we are going to substitute was intended, because Windows support these operations only for sockets. What leads to solution of dropping it again? 1. Having a QEMU-native wrapper with errp parameter for g_unix_set_fd_nonblocking() for non-socket fds worth doing, at least to unify error handling. 2. So, if try to keep _socket_ vs _file_ words, we'll have two actually duplicated functions for Linux, which actually will be executed successfully on any (good enough) fds, and nothing prevent using them improperly except for the name. That doesn't look good. 3. Naming helped us in the world where we crash on errors or ignore them. Now, with errp parameter, callers are intended to proper error checking. And for places where we really OK with crash-on-error semantics (like tests), we have an explicit &error_abort. So, this commit starts a series, which will effectively revert commit ff5927baa7ffb9 "util: rename qemu_*block() socket functions" (which in turn was reverting f9e8cacc5557e43 "oslib-posix: rename socket_set_nonblock() to qemu_set_nonblock()", so that's a long story). Now we don't simply rename, instead we provide the new API and update all the callers. This commit only introduces a new fd-layer wrapper. Next commits will replace old API calls with it, and finally remove old API. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- include/qemu/osdep.h | 1 + util/oslib-posix.c | 15 +++++++++++++++ util/oslib-win32.c | 18 ++++++++++++++++++ 3 files changed, 34 insertions(+) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index be3460b32f..1b38cb7e45 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -687,6 +687,7 @@ ssize_t qemu_write_full(int fd, const void *buf, size_t= count) G_GNUC_WARN_UNUSED_RESULT; =20 void qemu_set_cloexec(int fd); +bool qemu_set_blocking(int fd, bool block, Error **errp); =20 /* Return a dynamically allocated directory path that is appropriate for s= toring * local state. diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 4ff577e5de..c737701075 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -250,6 +250,21 @@ void qemu_anon_ram_free(void *ptr, size_t size) #endif } =20 +bool qemu_set_blocking(int fd, bool block, Error **errp) +{ + g_autoptr(GError) err =3D NULL; + + if (!g_unix_set_fd_nonblocking(fd, !block, &err)) { + error_setg_errno(errp, errno, + "Can't set file descriptor %d %s: %s", fd, + block ? "blocking" : "non-blocking", + err->message); + return false; + } + + return true; +} + void qemu_socket_set_block(int fd) { g_unix_set_fd_nonblocking(fd, false, NULL); diff --git a/util/oslib-win32.c b/util/oslib-win32.c index b7351634ec..03044f5b59 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -177,6 +177,24 @@ static int socket_error(void) } } =20 +bool qemu_set_blocking(int fd, bool block, Error **errp) +{ + unsigned long opt =3D block ? 0 : 1; + + if (block) { + qemu_socket_unselect(fd, NULL); + } + + if (ioctlsocket(fd, FIONBIO, &opt) !=3D NO_ERROR) { + error_setg_errno(errp, socket_error(), + "Can't set file descriptor %d %s", fd, + block ? "blocking" : "non-blocking"); + return false; + } + + return true; +} + void qemu_socket_set_block(int fd) { unsigned long opt =3D 0; --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964942; cv=none; d=zohomail.com; s=zohoarc; b=BwZnHUewgTXnyT/vynrLdwX+uEwD8sBThGb2QxHgWmuaKXIkP0NjOupQnnqQNTror1uzwWtglKExO2KQ1zHzTlpaEqQevDzmAYkaKzZNUqiCYKrN94yjao55prJKXYO+zd+VguV2C7rNW8qVluWvCX7qUZm7xW5tkUoPCKBM3oU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757964942; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=yRgRGmDBk/+Gy6BGnQeXyVo3XLXMXgPXSC0+/n16WPI=; b=cGs+0fLD2vRI6pMUxLlEP4ir8UDGeOJCNgnPESONsCC4nd3mf+VbWbVnRppxKJvcSahz0tUpXiqpQ9EM6/I4/P722A1JcANhc1UjKAmGT3mJILxvccEHoqVl5dhbrHBI1e1tq+7s+xPQplz6psgYKeRAILRSHo4f62tTzTI8tY0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1757964942263576.2300806119064; Mon, 15 Sep 2025 12:35:42 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyEwV-0002Ie-Ed; Mon, 15 Sep 2025 15:32:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvc-0001oa-RT; Mon, 15 Sep 2025 15:32:01 -0400 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEv7-0001tv-RZ; Mon, 15 Sep 2025 15:31:53 -0400 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:94a9:0:640:a3fa:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id F2CFF80962; Mon, 15 Sep 2025 22:31:15 +0300 (MSK) Received: from vsementsov-lin.. 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Tsirkin" , Stefano Garzarella Subject: [PATCH v4 04/12] handle result of qio_channel_set_blocking() Date: Mon, 15 Sep 2025 22:30:56 +0300 Message-ID: <20250915193105.230085-5-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964944256116600 Currently, we just always pass NULL as errp argument. That doesn't look good. Some realizations of interface may actually report errors. Channel-socket realization actually either ignore or crash on errors, but we are going to straighten it out to always reporting an errp in further commits. So, convert all callers to either handle the error (where environment allows) or explicitly use &error_abort. Take also a chance to change the return value to more convenient bool (keeping also in mind, that underlying realizations may return -1 on failure, not -errno). Suggested-by: Daniel P. Berrang=C3=A9 Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- block/nbd.c | 4 +++- chardev/char-socket.c | 20 ++++++++++++++++---- hw/remote/proxy.c | 6 +++++- hw/remote/remote-obj.c | 6 +++++- hw/vfio-user/proxy.c | 11 ++++++++--- include/io/channel.h | 6 +++--- io/channel.c | 4 ++-- nbd/server.c | 4 +++- scsi/qemu-pr-helper.c | 9 ++++++--- tests/unit/io-channel-helpers.c | 5 +++-- tests/unit/test-io-channel-tls.c | 4 ++-- tools/i386/qemu-vmsr-helper.c | 6 ++++-- ui/vnc.c | 2 +- util/vhost-user-server.c | 7 ++++++- 14 files changed, 67 insertions(+), 27 deletions(-) diff --git a/block/nbd.c b/block/nbd.c index d5a2b21c6d..5d231d5c4e 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -351,7 +351,9 @@ int coroutine_fn nbd_co_do_establish_connection(BlockDr= iverState *bs, return ret; } =20 - qio_channel_set_blocking(s->ioc, false, NULL); + if (!qio_channel_set_blocking(s->ioc, false, errp)) { + return -EINVAL; + } qio_channel_set_follow_coroutine_ctx(s->ioc, true); =20 /* successfully connected */ diff --git a/chardev/char-socket.c b/chardev/char-socket.c index 1be078dfc0..cb4ec78ebe 100644 --- a/chardev/char-socket.c +++ b/chardev/char-socket.c @@ -530,16 +530,24 @@ static int tcp_chr_sync_read(Chardev *chr, const uint= 8_t *buf, int len) SocketChardev *s =3D SOCKET_CHARDEV(chr); int size; int saved_errno; + Error *local_err =3D NULL; =20 if (s->state !=3D TCP_CHARDEV_STATE_CONNECTED) { return 0; } =20 - qio_channel_set_blocking(s->ioc, true, NULL); + if (!qio_channel_set_blocking(s->ioc, true, &local_err)) { + error_report_err(local_err); + return -1; + } size =3D tcp_chr_recv(chr, (void *) buf, len); saved_errno =3D errno; if (s->state !=3D TCP_CHARDEV_STATE_DISCONNECTED) { - qio_channel_set_blocking(s->ioc, false, NULL); + if (!qio_channel_set_blocking(s->ioc, false, &local_err)) { + error_report_err(local_err); + /* failed to recover non-blocking state */ + tcp_chr_disconnect(chr); + } } if (size =3D=3D 0) { /* connection closed */ @@ -884,18 +892,22 @@ static void tcp_chr_set_client_ioc_name(Chardev *chr, static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc) { SocketChardev *s =3D SOCKET_CHARDEV(chr); + Error *local_err =3D NULL; =20 if (s->state !=3D TCP_CHARDEV_STATE_CONNECTING) { return -1; } =20 + if (!qio_channel_set_blocking(QIO_CHANNEL(sioc), false, &local_err)) { + error_report_err(local_err); + return -1; + } + s->ioc =3D QIO_CHANNEL(sioc); object_ref(OBJECT(sioc)); s->sioc =3D sioc; object_ref(OBJECT(sioc)); =20 - qio_channel_set_blocking(s->ioc, false, NULL); - if (s->do_nodelay) { qio_channel_set_delay(s->ioc, false); } diff --git a/hw/remote/proxy.c b/hw/remote/proxy.c index b0165aa2a1..18e0f7a064 100644 --- a/hw/remote/proxy.c +++ b/hw/remote/proxy.c @@ -112,8 +112,12 @@ static void pci_proxy_dev_realize(PCIDevice *device, E= rror **errp) return; } =20 + if (!qio_channel_set_blocking(dev->ioc, true, errp)) { + object_unref(dev->ioc); + return; + } + qemu_mutex_init(&dev->io_mutex); - qio_channel_set_blocking(dev->ioc, true, NULL); =20 pci_conf[PCI_LATENCY_TIMER] =3D 0xff; pci_conf[PCI_INTERRUPT_PIN] =3D 0x01; diff --git a/hw/remote/remote-obj.c b/hw/remote/remote-obj.c index 85882902d7..3402068ab9 100644 --- a/hw/remote/remote-obj.c +++ b/hw/remote/remote-obj.c @@ -107,7 +107,11 @@ static void remote_object_machine_done(Notifier *notif= ier, void *data) error_report_err(err); return; } - qio_channel_set_blocking(ioc, false, NULL); + if (!qio_channel_set_blocking(ioc, false, &err)) { + error_report_err(err); + object_unref(OBJECT(ioc)); + return; + } =20 o->dev =3D dev; =20 diff --git a/hw/vfio-user/proxy.c b/hw/vfio-user/proxy.c index 2c03d49f97..bbd7ec243d 100644 --- a/hw/vfio-user/proxy.c +++ b/hw/vfio-user/proxy.c @@ -886,10 +886,11 @@ VFIOUserProxy *vfio_user_connect_dev(SocketAddress *a= ddr, Error **errp) sioc =3D qio_channel_socket_new(); ioc =3D QIO_CHANNEL(sioc); if (qio_channel_socket_connect_sync(sioc, addr, errp) < 0) { - object_unref(OBJECT(ioc)); - return NULL; + goto fail; + } + if (!qio_channel_set_blocking(ioc, false, errp)) { + goto fail; } - qio_channel_set_blocking(ioc, false, NULL); =20 proxy =3D g_malloc0(sizeof(VFIOUserProxy)); proxy->sockname =3D g_strdup_printf("unix:%s", sockname); @@ -923,6 +924,10 @@ VFIOUserProxy *vfio_user_connect_dev(SocketAddress *ad= dr, Error **errp) QLIST_INSERT_HEAD(&vfio_user_sockets, proxy, next); =20 return proxy; + +fail: + object_unref(OBJECT(ioc)); + return NULL; } =20 void vfio_user_set_handler(VFIODevice *vbasedev, diff --git a/include/io/channel.h b/include/io/channel.h index c7f64506f7..999a8f5f23 100644 --- a/include/io/channel.h +++ b/include/io/channel.h @@ -531,9 +531,9 @@ int coroutine_mixed_fn qio_channel_write_all(QIOChannel= *ioc, * return QIO_CHANNEL_ERR_BLOCK if they would otherwise * block on I/O */ -int qio_channel_set_blocking(QIOChannel *ioc, - bool enabled, - Error **errp); +bool qio_channel_set_blocking(QIOChannel *ioc, + bool enabled, + Error **errp); =20 /** * qio_channel_set_follow_coroutine_ctx: diff --git a/io/channel.c b/io/channel.c index ebd9322765..852e684938 100644 --- a/io/channel.c +++ b/io/channel.c @@ -359,12 +359,12 @@ int coroutine_mixed_fn qio_channel_write_all(QIOChann= el *ioc, } =20 =20 -int qio_channel_set_blocking(QIOChannel *ioc, +bool qio_channel_set_blocking(QIOChannel *ioc, bool enabled, Error **errp) { QIOChannelClass *klass =3D QIO_CHANNEL_GET_CLASS(ioc); - return klass->io_set_blocking(ioc, enabled, errp); + return klass->io_set_blocking(ioc, enabled, errp) =3D=3D 0; } =20 =20 diff --git a/nbd/server.c b/nbd/server.c index d242be9811..acec0487a8 100644 --- a/nbd/server.c +++ b/nbd/server.c @@ -1411,7 +1411,9 @@ static coroutine_fn int nbd_negotiate(NBDClient *clie= nt, Error **errp) ....options sent, ending in NBD_OPT_EXPORT_NAME or NBD_OPT_GO.... */ =20 - qio_channel_set_blocking(client->ioc, false, NULL); + if (!qio_channel_set_blocking(client->ioc, false, errp)) { + return -EINVAL; + } qio_channel_set_follow_coroutine_ctx(client->ioc, true); =20 trace_nbd_negotiate_begin(); diff --git a/scsi/qemu-pr-helper.c b/scsi/qemu-pr-helper.c index b69dd982d6..074b4db472 100644 --- a/scsi/qemu-pr-helper.c +++ b/scsi/qemu-pr-helper.c @@ -733,8 +733,11 @@ static void coroutine_fn prh_co_entry(void *opaque) uint32_t flags; int r; =20 - qio_channel_set_blocking(QIO_CHANNEL(client->ioc), - false, NULL); + if (!qio_channel_set_blocking(QIO_CHANNEL(client->ioc), + false, &local_err)) { + goto out; + } + qio_channel_set_follow_coroutine_ctx(QIO_CHANNEL(client->ioc), true); =20 /* A very simple negotiation for future extensibility. No features @@ -786,6 +789,7 @@ static void coroutine_fn prh_co_entry(void *opaque) } } =20 +out: if (local_err) { if (verbose =3D=3D 0) { error_free(local_err); @@ -794,7 +798,6 @@ static void coroutine_fn prh_co_entry(void *opaque) } } =20 -out: object_unref(OBJECT(client->ioc)); g_free(client); } diff --git a/tests/unit/io-channel-helpers.c b/tests/unit/io-channel-helper= s.c index c0799c21c2..22b42d14cd 100644 --- a/tests/unit/io-channel-helpers.c +++ b/tests/unit/io-channel-helpers.c @@ -20,6 +20,7 @@ =20 #include "qemu/osdep.h" #include "io-channel-helpers.h" +#include "qapi/error.h" #include "qemu/iov.h" =20 struct QIOChannelTest { @@ -109,8 +110,8 @@ void qio_channel_test_run_threads(QIOChannelTest *test, test->src =3D src; test->dst =3D dst; =20 - qio_channel_set_blocking(test->dst, blocking, NULL); - qio_channel_set_blocking(test->src, blocking, NULL); + qio_channel_set_blocking(test->dst, blocking, &error_abort); + qio_channel_set_blocking(test->src, blocking, &error_abort); =20 reader =3D g_thread_new("reader", test_io_thread_reader, diff --git a/tests/unit/test-io-channel-tls.c b/tests/unit/test-io-channel-= tls.c index e036ac5df4..6f282ad45d 100644 --- a/tests/unit/test-io-channel-tls.c +++ b/tests/unit/test-io-channel-tls.c @@ -184,8 +184,8 @@ static void test_io_channel_tls(const void *opaque) * thread, so we need these non-blocking to avoid deadlock * of ourselves */ - qio_channel_set_blocking(QIO_CHANNEL(clientChanSock), false, NULL); - qio_channel_set_blocking(QIO_CHANNEL(serverChanSock), false, NULL); + qio_channel_set_blocking(QIO_CHANNEL(clientChanSock), false, &error_ab= ort); + qio_channel_set_blocking(QIO_CHANNEL(serverChanSock), false, &error_ab= ort); =20 /* Now the real part of the test, setup the sessions */ clientChanTLS =3D qio_channel_tls_new_client( diff --git a/tools/i386/qemu-vmsr-helper.c b/tools/i386/qemu-vmsr-helper.c index 5f19a48cbd..6c0f4fe870 100644 --- a/tools/i386/qemu-vmsr-helper.c +++ b/tools/i386/qemu-vmsr-helper.c @@ -213,8 +213,10 @@ static void coroutine_fn vh_co_entry(void *opaque) uint64_t vmsr; int r; =20 - qio_channel_set_blocking(QIO_CHANNEL(client->ioc), - false, NULL); + if (!qio_channel_set_blocking(QIO_CHANNEL(client->ioc), + false, &local_err)) { + goto out; + } =20 qio_channel_set_follow_coroutine_ctx(QIO_CHANNEL(client->ioc), true); =20 diff --git a/ui/vnc.c b/ui/vnc.c index 68ca4a68e7..8ca77b2971 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -3337,7 +3337,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSoc= ket *sioc, =20 VNC_DEBUG("New client on socket %p\n", vs->sioc); update_displaychangelistener(&vd->dcl, VNC_REFRESH_INTERVAL_BASE); - qio_channel_set_blocking(vs->ioc, false, NULL); + qio_channel_set_blocking(vs->ioc, false, &error_abort); if (vs->ioc_tag) { g_source_remove(vs->ioc_tag); } diff --git a/util/vhost-user-server.c b/util/vhost-user-server.c index b19229074a..d805a92394 100644 --- a/util/vhost-user-server.c +++ b/util/vhost-user-server.c @@ -336,6 +336,7 @@ static void vu_accept(QIONetListener *listener, QIOChan= nelSocket *sioc, gpointer opaque) { VuServer *server =3D opaque; + Error *local_err =3D NULL; =20 if (server->sioc) { warn_report("Only one vhost-user client is allowed to " @@ -368,7 +369,11 @@ static void vu_accept(QIONetListener *listener, QIOCha= nnelSocket *sioc, object_ref(OBJECT(server->ioc)); =20 /* TODO vu_message_write() spins if non-blocking! */ - qio_channel_set_blocking(server->ioc, false, NULL); + if (!qio_channel_set_blocking(server->ioc, false, &local_err)) { + error_report_err(local_err); + vu_deinit(&server->vu_dev); + return; + } =20 qio_channel_set_follow_coroutine_ctx(server->ioc, true); =20 --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964840; cv=none; d=zohomail.com; s=zohoarc; b=cYxw96B5FZgTlfcvC74iMVqcvMluh0P++O2OTohndFn4pdLFkzKHV97YzUHcCxf05GN5NCZVNPnHHKwTdN0SVmDs1MSeFq3gD+N2kJObBEfD0w/WPfSVZEVwZsBGmkSc+GYf56GMyWWcN7vD+nxt+HfzN7byyl/2yYdxaAOOScs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757964840; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=dSoRpVPRnci8f0kJaoOmL6uYo62KUNPttjNJEMfNbuw=; b=i2sSJCpezhNC0CdX52OKa1qZg49dh29UhnkBObUeQPyErZCaRM2bQQ81x05Hb8svOaGdVG/cpLeBlDM7/L0hqQiF4+CsRfweOTL/kYqPGYexZhReACMPxl4/IFgFQmFjYvt6SbS8KxMwtGpjmcvyt3uRCt1xPLDT/fPEnHky3EM= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1757964840628194.42326495858697; Mon, 15 Sep 2025 12:34:00 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyEvk-0001rb-Jd; Mon, 15 Sep 2025 15:32:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvZ-0001oI-0c; Mon, 15 Sep 2025 15:31:54 -0400 Received: from forwardcorp1d.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvC-0001u5-9T; Mon, 15 Sep 2025 15:31:52 -0400 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:94a9:0:640:a3fa:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 286968099A; Mon, 15 Sep 2025 22:31:17 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-UIrkraLT; Mon, 15 Sep 2025 22:31:16 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964676; bh=dSoRpVPRnci8f0kJaoOmL6uYo62KUNPttjNJEMfNbuw=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=qHr2Kdo0yEkZomNAOUgDbhI2VqvQoolc9e0Fn7HQEdWUXfR3U18SGVsMA349KJApq cvra21n8BC0JmXcGfUV7UXOhtq2IaRbzigwvCF66+cV5e7sXsSLY/dEPGmncXrDY5Z /tevQfHbwNGEdgiIwwGMH/CGv6xqOLf/G+TEtOH0= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com, Hailiang Zhang , Fabiano Rosas Subject: [PATCH v4 05/12] migration: qemu_file_set_blocking(): add errp parameter Date: Mon, 15 Sep 2025 22:30:57 +0300 Message-ID: <20250915193105.230085-6-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, T_SPF_TEMPERROR=0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964843154116600 Content-Type: text/plain; charset="utf-8" qemu_file_set_blocking() is a wrapper on qio_channel_set_blocking(), so let's passthrough the errp. Signed-off-by: Vladimir Sementsov-Ogievskiy --- migration/colo.c | 5 ++++- migration/migration.c | 8 +++++--- migration/postcopy-ram.c | 2 +- migration/qemu-file.c | 4 ++-- migration/qemu-file.h | 2 +- migration/savevm.c | 4 ++-- 6 files changed, 15 insertions(+), 10 deletions(-) diff --git a/migration/colo.c b/migration/colo.c index e0f713c837..cf4d71d9ed 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -859,7 +859,10 @@ static void *colo_process_incoming_thread(void *opaque) * coroutine, and here we are in the COLO incoming thread, so it is ok= to * set the fd back to blocked. */ - qemu_file_set_blocking(mis->from_src_file, true); + if (!qemu_file_set_blocking(mis->from_src_file, true, &local_err)) { + error_report_err(local_err); + goto out; + } =20 colo_incoming_start_dirty_log(); =20 diff --git a/migration/migration.c b/migration/migration.c index 10c216d25d..e1ac4d73c2 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -951,7 +951,7 @@ static void migration_incoming_setup(QEMUFile *f) =20 assert(!mis->from_src_file); mis->from_src_file =3D f; - qemu_file_set_blocking(f, false); + qemu_file_set_blocking(f, false, &error_abort); } =20 void migration_incoming_process(void) @@ -971,7 +971,7 @@ static bool postcopy_try_recover(void) /* This should be set already in migration_incoming_setup() */ assert(mis->from_src_file); /* Postcopy has standalone thread to do vm load */ - qemu_file_set_blocking(mis->from_src_file, true); + qemu_file_set_blocking(mis->from_src_file, true, &error_abort); =20 /* Re-configure the return path */ mis->to_src_file =3D qemu_file_get_return_path(mis->from_src_file); @@ -4002,7 +4002,9 @@ void migration_connect(MigrationState *s, Error *erro= r_in) } =20 migration_rate_set(rate_limit); - qemu_file_set_blocking(s->to_dst_file, true); + if (!qemu_file_set_blocking(s->to_dst_file, true, &local_err)) { + goto fail; + } =20 /* * Open the return path. For postcopy, it is used exclusively. For diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c index 45af9a361e..0172172343 100644 --- a/migration/postcopy-ram.c +++ b/migration/postcopy-ram.c @@ -1909,7 +1909,7 @@ void postcopy_preempt_new_channel(MigrationIncomingSt= ate *mis, QEMUFile *file) * The new loading channel has its own threads, so it needs to be * blocked too. It's by default true, just be explicit. */ - qemu_file_set_blocking(file, true); + qemu_file_set_blocking(file, true, &error_abort); mis->postcopy_qemufile_dst =3D file; qemu_sem_post(&mis->postcopy_qemufile_dst_done); trace_postcopy_preempt_new_channel(); diff --git a/migration/qemu-file.c b/migration/qemu-file.c index d5c6e7ec61..0f4280df21 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -888,9 +888,9 @@ void qemu_put_counted_string(QEMUFile *f, const char *s= tr) * both directions, and thus changing the blocking on the main * QEMUFile can also affect the return path. */ -void qemu_file_set_blocking(QEMUFile *f, bool block) +bool qemu_file_set_blocking(QEMUFile *f, bool block, Error **errp) { - qio_channel_set_blocking(f->ioc, block, NULL); + return qio_channel_set_blocking(f->ioc, block, errp); } =20 /* diff --git a/migration/qemu-file.h b/migration/qemu-file.h index f5b9f430e0..c13c967167 100644 --- a/migration/qemu-file.h +++ b/migration/qemu-file.h @@ -71,7 +71,7 @@ void qemu_file_set_error(QEMUFile *f, int ret); int qemu_file_shutdown(QEMUFile *f); QEMUFile *qemu_file_get_return_path(QEMUFile *f); int qemu_fflush(QEMUFile *f); -void qemu_file_set_blocking(QEMUFile *f, bool block); +bool qemu_file_set_blocking(QEMUFile *f, bool block, Error **errp); int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size); void qemu_set_offset(QEMUFile *f, off_t off, int whence); off_t qemu_get_offset(QEMUFile *f); diff --git a/migration/savevm.c b/migration/savevm.c index fabbeb296a..abe0547f9b 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2095,7 +2095,7 @@ static void *postcopy_ram_listen_thread(void *opaque) * Because we're a thread and not a coroutine we can't yield * in qemu_file, and thus we must be blocking now. */ - qemu_file_set_blocking(f, true); + qemu_file_set_blocking(f, true, &error_fatal); =20 /* TODO: sanity check that only postcopiable data will be loaded here = */ load_res =3D qemu_loadvm_state_main(f, mis); @@ -2108,7 +2108,7 @@ static void *postcopy_ram_listen_thread(void *opaque) f =3D mis->from_src_file; =20 /* And non-blocking again so we don't block in any cleanup */ - qemu_file_set_blocking(f, false); + qemu_file_set_blocking(f, false, &error_fatal); =20 trace_postcopy_ram_listen_thread_exit(); if (load_res < 0) { --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964843; cv=none; d=zohomail.com; s=zohoarc; b=bgfG90qqRFQylBvFtMq94trEtofS/ntOzFmgOB38DaOadD0qLivacCSCzCVHQ3YLBVDBxxRLZHcCe6QzHlV8lIL6i6wwnuSd7o96W//kIAnlNMU/nAMpvJuXcKXRw6a1vvQN7BDQvpcaTaRi+w8cqvKwdQH4C7NJJRDHOwFIXYQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757964843; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=XNw0opyqYPDgMNPtAran740FngIR8tg94/Ggcl/sRJQ=; b=OyF6swVQTHrpJSH+TMWljbQIS+pUeW+u0VruzgKTlETh/wN6BKfwTy/p7buIQigUS2DIAALvFMyUoOJMfPErB+NzynJKu6O0irqz5Iutdgxyq8N1VNXnR1Cnni6KvHuWmwwdDrkk4XJvGKAGwbDVTE9xE5HJR7h+ARf0qmEKjPk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17579648429191005.4326994409374; Mon, 15 Sep 2025 12:34:02 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyEvx-00020O-6K; Mon, 15 Sep 2025 15:32:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvf-0001p3-Ja; Mon, 15 Sep 2025 15:32:01 -0400 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvF-0001uH-6i; Mon, 15 Sep 2025 15:31:58 -0400 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:94a9:0:640:a3fa:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 0FF7D809A1; Mon, 15 Sep 2025 22:31:18 +0300 (MSK) Received: from vsementsov-lin.. 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Tsirkin" , Stefano Garzarella , Jason Wang , Michael Roth , Kostiantyn Kostiuk , Paolo Bonzini , Stefan Weil , Coiby Xu Subject: [PATCH v4 06/12] util: drop qemu_socket_set_nonblock() Date: Mon, 15 Sep 2025 22:30:58 +0300 Message-ID: <20250915193105.230085-7-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964845383116600 Content-Type: text/plain; charset="utf-8" Use common qemu_set_blocking() instead. Note that pre-patch the behavior of Win32 and Linux realizations are inconsistent: we ignore failure for Win32, and assert success for Linux. How do we convert the callers? 1. Most of callers call qemu_socket_set_nonblock() on a freshly created socket fd, in conditions when we may simply report an error. Seems correct switching to error handling both for Windows (pre-patch error is ignored) and Linux (pre-patch we assert success). Anyway, we normally don't expect errors in these cases. Still in tests let's use &error_abort for simplicity. What are exclusions? 2. hw/virtio/vhost-user.c - we are inside #ifdef CONFIG_LINUX, so no damage in switching to error handling from assertion. 3. io/channel-socket.c: here we convert both old calls to qemu_socket_set_nonblock() and qemu_socket_set_block() to one new call. Pre-patch we assert success for Linux in qemu_socket_set_nonblock(), and ignore all other errors here. So, for Windows switch is a bit dangerous: we may get new errors or crashes(when error_abort is passed) in cases where we have silently ignored the error before (was it correct in all such cases, if they were?) Still, there is no other way to stricter API than take this risk. 4. util/vhost-user-server - compiled only for Linux (see util/meson.build), so we are safe, switching from assertion to &error_abort. Note: In qga/channel-posix.c we use g_warning(), where g_printerr() would actually be a better choice. Still let's for now follow common style of qga, where g_warning() is commonly used to print such messages, and no call to g_printerr(). Converting everything to use g_printerr() should better be another series. Signed-off-by: Vladimir Sementsov-Ogievskiy --- contrib/ivshmem-server/ivshmem-server.c | 9 ++++++++- hw/hyperv/syndbg.c | 4 +++- hw/virtio/vhost-user.c | 5 ++++- include/qemu/sockets.h | 1 - io/channel-socket.c | 7 +++---- net/dgram.c | 16 +++++++++++++--- net/l2tpv3.c | 5 +++-- net/socket.c | 20 ++++++++++++++++---- qga/channel-posix.c | 7 ++++++- tests/unit/socket-helpers.c | 4 +++- tests/unit/test-crypto-tlssession.c | 8 ++++---- util/oslib-posix.c | 7 ------- util/oslib-win32.c | 5 ----- util/vhost-user-server.c | 4 ++-- 14 files changed, 65 insertions(+), 37 deletions(-) diff --git a/contrib/ivshmem-server/ivshmem-server.c b/contrib/ivshmem-serv= er/ivshmem-server.c index 2f3c7320a6..13cb828174 100644 --- a/contrib/ivshmem-server/ivshmem-server.c +++ b/contrib/ivshmem-server/ivshmem-server.c @@ -6,6 +6,7 @@ * top-level directory. */ #include "qemu/osdep.h" +#include "qapi/error.h" #include "qemu/host-utils.h" #include "qemu/sockets.h" =20 @@ -135,6 +136,7 @@ ivshmem_server_handle_new_conn(IvshmemServer *server) socklen_t unaddr_len; int newfd; unsigned i; + Error *local_err =3D NULL; =20 /* accept the incoming connection */ unaddr_len =3D sizeof(unaddr); @@ -146,9 +148,14 @@ ivshmem_server_handle_new_conn(IvshmemServer *server) return -1; } =20 - qemu_socket_set_nonblock(newfd); IVSHMEM_SERVER_DEBUG(server, "accept()=3D%d\n", newfd); =20 + if (!qemu_set_blocking(newfd, false, &local_err)) { + error_report_err(local_err); + close(newfd); + return -1; + } + /* allocate new structure for this peer */ peer =3D g_malloc0(sizeof(*peer)); peer->sock_fd =3D newfd; diff --git a/hw/hyperv/syndbg.c b/hw/hyperv/syndbg.c index ac7e15f6f1..bcdfdf6af7 100644 --- a/hw/hyperv/syndbg.c +++ b/hw/hyperv/syndbg.c @@ -338,7 +338,9 @@ static void hv_syndbg_realize(DeviceState *dev, Error *= *errp) return; } =20 - qemu_socket_set_nonblock(syndbg->socket); + if (!qemu_set_blocking(syndbg->socket, false, errp)) { + return; + } =20 syndbg->servaddr.sin_port =3D htons(syndbg->host_port); syndbg->servaddr.sin_family =3D AF_INET; diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 1e1d6b0d6e..36c9c2e04d 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -2039,7 +2039,10 @@ static int vhost_user_postcopy_advise(struct vhost_d= ev *dev, Error **errp) error_setg(errp, "%s: Failed to get ufd", __func__); return -EIO; } - qemu_socket_set_nonblock(ufd); + if (!qemu_set_blocking(ufd, false, errp)) { + close(ufd); + return -EINVAL; + } =20 /* register ufd with userfault thread */ u->postcopy_fd.fd =3D ufd; diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index c562690d89..6477f90b9e 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -48,7 +48,6 @@ int socket_set_cork(int fd, int v); int socket_set_nodelay(int fd); void qemu_socket_set_block(int fd); int qemu_socket_try_set_nonblock(int fd); -void qemu_socket_set_nonblock(int fd); int socket_set_fast_reuse(int fd); =20 #ifdef WIN32 diff --git a/io/channel-socket.c b/io/channel-socket.c index 21f8f2e0c5..f7e3cb9742 100644 --- a/io/channel-socket.c +++ b/io/channel-socket.c @@ -825,11 +825,10 @@ qio_channel_socket_set_blocking(QIOChannel *ioc, { QIOChannelSocket *sioc =3D QIO_CHANNEL_SOCKET(ioc); =20 - if (enabled) { - qemu_socket_set_block(sioc->fd); - } else { - qemu_socket_set_nonblock(sioc->fd); + if (!qemu_set_blocking(sioc->fd, enabled, errp)) { + return -1; } + return 0; } =20 diff --git a/net/dgram.c b/net/dgram.c index 48f653bceb..fb9ded30df 100644 --- a/net/dgram.c +++ b/net/dgram.c @@ -226,7 +226,10 @@ static int net_dgram_mcast_create(struct sockaddr_in *= mcastaddr, } } =20 - qemu_socket_set_nonblock(fd); + if (!qemu_set_blocking(fd, false, errp)) { + goto fail; + } + return fd; fail: if (fd >=3D 0) { @@ -504,7 +507,11 @@ int net_init_dgram(const Netdev *netdev, const char *n= ame, close(fd); return -1; } - qemu_socket_set_nonblock(fd); + + if (!qemu_set_blocking(fd, false, errp)) { + close(fd); + return -1; + } =20 dest_len =3D sizeof(raddr_in); dest_addr =3D g_malloc(dest_len); @@ -551,7 +558,10 @@ int net_init_dgram(const Netdev *netdev, const char *n= ame, close(fd); return -1; } - qemu_socket_set_nonblock(fd); + if (!qemu_set_blocking(fd, false, errp)) { + close(fd); + return -1; + } =20 dest_len =3D sizeof(raddr_un); dest_addr =3D g_malloc(dest_len); diff --git a/net/l2tpv3.c b/net/l2tpv3.c index b5547cb917..cdfc641aa6 100644 --- a/net/l2tpv3.c +++ b/net/l2tpv3.c @@ -648,6 +648,9 @@ int net_init_l2tpv3(const Netdev *netdev, error_setg(errp, "could not bind socket err=3D%i", errno); goto outerr; } + if (!qemu_set_blocking(fd, false, errp)) { + goto outerr; + } =20 freeaddrinfo(result); =20 @@ -709,8 +712,6 @@ int net_init_l2tpv3(const Netdev *netdev, s->vec =3D g_new(struct iovec, MAX_L2TPV3_IOVCNT); s->header_buf =3D g_malloc(s->header_size); =20 - qemu_socket_set_nonblock(fd); - s->fd =3D fd; s->counter =3D 0; =20 diff --git a/net/socket.c b/net/socket.c index 784dda686f..db25e3d9ae 100644 --- a/net/socket.c +++ b/net/socket.c @@ -295,7 +295,10 @@ static int net_socket_mcast_create(struct sockaddr_in = *mcastaddr, } } =20 - qemu_socket_set_nonblock(fd); + if (!qemu_set_blocking(fd, false, errp)) { + goto fail; + } + return fd; fail: if (fd >=3D 0) @@ -508,7 +511,10 @@ static int net_socket_listen_init(NetClientState *peer, error_setg_errno(errp, errno, "can't create stream socket"); return -1; } - qemu_socket_set_nonblock(fd); + if (!qemu_set_blocking(fd, false, errp)) { + close(fd); + return -1; + } =20 socket_set_fast_reuse(fd); =20 @@ -556,7 +562,10 @@ static int net_socket_connect_init(NetClientState *pee= r, error_setg_errno(errp, errno, "can't create stream socket"); return -1; } - qemu_socket_set_nonblock(fd); + if (!qemu_set_blocking(fd, false, errp)) { + close(fd); + return -1; + } =20 connected =3D 0; for(;;) { @@ -671,7 +680,10 @@ static int net_socket_udp_init(NetClientState *peer, close(fd); return -1; } - qemu_socket_set_nonblock(fd); + if (!qemu_set_blocking(fd, false, errp)) { + close(fd); + return -1; + } =20 s =3D net_socket_fd_init_dgram(peer, model, name, fd, 0, NULL, errp); if (!s) { diff --git a/qga/channel-posix.c b/qga/channel-posix.c index 465d688ecb..9ccc8b7bd1 100644 --- a/qga/channel-posix.c +++ b/qga/channel-posix.c @@ -28,6 +28,7 @@ static gboolean ga_channel_listen_accept(GIOChannel *chan= nel, GAChannel *c =3D data; int ret, client_fd; bool accepted =3D false; + Error *err =3D NULL; =20 g_assert(channel !=3D NULL); =20 @@ -36,7 +37,11 @@ static gboolean ga_channel_listen_accept(GIOChannel *cha= nnel, g_warning("error converting fd to gsocket: %s", strerror(errno)); goto out; } - qemu_socket_set_nonblock(client_fd); + if (!qemu_set_blocking(client_fd, false, &err)) { + g_warning("%s", error_get_pretty(err)); + error_free(err); + goto out; + } ret =3D ga_channel_client_add(c, client_fd); if (ret) { g_warning("error setting up connection"); diff --git a/tests/unit/socket-helpers.c b/tests/unit/socket-helpers.c index 37db24f72a..46d2ff101c 100644 --- a/tests/unit/socket-helpers.c +++ b/tests/unit/socket-helpers.c @@ -19,6 +19,7 @@ */ =20 #include "qemu/osdep.h" +#include "qapi/error.h" #include "qemu/sockets.h" #include "socket-helpers.h" =20 @@ -88,7 +89,8 @@ static int socket_can_bind_connect(const char *hostname, = int family) goto cleanup; } =20 - qemu_socket_set_nonblock(cfd); + qemu_set_blocking(cfd, false, &error_abort); + if (connect(cfd, (struct sockaddr *)&ss, sslen) < 0) { if (errno =3D=3D EINPROGRESS) { check_soerr =3D true; diff --git a/tests/unit/test-crypto-tlssession.c b/tests/unit/test-crypto-t= lssession.c index 554054e934..61311cbe6e 100644 --- a/tests/unit/test-crypto-tlssession.c +++ b/tests/unit/test-crypto-tlssession.c @@ -112,8 +112,8 @@ static void test_crypto_tls_session_psk(void) * thread, so we need these non-blocking to avoid deadlock * of ourselves */ - qemu_socket_set_nonblock(channel[0]); - qemu_socket_set_nonblock(channel[1]); + qemu_set_blocking(channel[0], false, &error_abort); + qemu_set_blocking(channel[1], false, &error_abort); =20 clientCreds =3D test_tls_creds_psk_create( QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, @@ -264,8 +264,8 @@ static void test_crypto_tls_session_x509(const void *op= aque) * thread, so we need these non-blocking to avoid deadlock * of ourselves */ - qemu_socket_set_nonblock(channel[0]); - qemu_socket_set_nonblock(channel[1]); + qemu_set_blocking(channel[0], false, &error_abort); + qemu_set_blocking(channel[1], false, &error_abort); =20 #define CLIENT_CERT_DIR "tests/test-crypto-tlssession-client/" #define SERVER_CERT_DIR "tests/test-crypto-tlssession-server/" diff --git a/util/oslib-posix.c b/util/oslib-posix.c index c737701075..599993d40d 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -275,13 +275,6 @@ int qemu_socket_try_set_nonblock(int fd) return g_unix_set_fd_nonblocking(fd, true, NULL) ? 0 : -errno; } =20 -void qemu_socket_set_nonblock(int fd) -{ - int f; - f =3D qemu_socket_try_set_nonblock(fd); - assert(f =3D=3D 0); -} - int socket_set_fast_reuse(int fd) { int val =3D 1, ret; diff --git a/util/oslib-win32.c b/util/oslib-win32.c index 03044f5b59..1566eb57e7 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -211,11 +211,6 @@ int qemu_socket_try_set_nonblock(int fd) return 0; } =20 -void qemu_socket_set_nonblock(int fd) -{ - (void)qemu_socket_try_set_nonblock(fd); -} - int socket_set_fast_reuse(int fd) { /* Enabling the reuse of an endpoint that was used by a socket still in diff --git a/util/vhost-user-server.c b/util/vhost-user-server.c index d805a92394..b3416ab956 100644 --- a/util/vhost-user-server.c +++ b/util/vhost-user-server.c @@ -78,7 +78,7 @@ static void vmsg_unblock_fds(VhostUserMsg *vmsg) } =20 for (i =3D 0; i < vmsg->fd_num; i++) { - qemu_socket_set_nonblock(vmsg->fds[i]); + qemu_set_blocking(vmsg->fds[i], false, &error_abort); } } =20 @@ -303,7 +303,7 @@ set_watch(VuDev *vu_dev, int fd, int vu_evt, =20 vu_fd_watch->fd =3D fd; 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Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Peter Xu Reviewed-by: Daniel P. Berrang=C3=A9 --- include/qemu/sockets.h | 1 - net/dgram.c | 12 +++--------- net/socket.c | 7 ++----- net/stream.c | 9 +++------ net/stream_data.c | 10 ++++------ util/oslib-posix.c | 4 ---- util/oslib-win32.c | 9 --------- 7 files changed, 12 insertions(+), 40 deletions(-) diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index 6477f90b9e..9512fec514 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -47,7 +47,6 @@ ssize_t qemu_send_full(int s, const void *buf, size_t cou= nt) int socket_set_cork(int fd, int v); int socket_set_nodelay(int fd); void qemu_socket_set_block(int fd); -int qemu_socket_try_set_nonblock(int fd); int socket_set_fast_reuse(int fd); =20 #ifdef WIN32 diff --git a/net/dgram.c b/net/dgram.c index fb9ded30df..baa126d514 100644 --- a/net/dgram.c +++ b/net/dgram.c @@ -287,7 +287,7 @@ static int net_dgram_mcast_init(NetClientState *peer, Error **errp) { NetDgramState *s; - int fd, ret; + int fd; struct sockaddr_in *saddr; =20 if (remote->type !=3D SOCKET_ADDRESS_TYPE_INET) { @@ -335,11 +335,8 @@ static int net_dgram_mcast_init(NetClientState *peer, g_free(saddr); return -1; } - ret =3D qemu_socket_try_set_nonblock(fd); - if (ret < 0) { + if (!qemu_set_blocking(fd, false, errp)) { g_free(saddr); - error_setg_errno(errp, -ret, "%s: Can't use file descripto= r %d", - name, fd); return -1; } =20 @@ -572,10 +569,7 @@ int net_init_dgram(const Netdev *netdev, const char *n= ame, if (fd =3D=3D -1) { return -1; } - ret =3D qemu_socket_try_set_nonblock(fd); - if (ret < 0) { - error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d= ", - name, fd); + if (!qemu_set_blocking(fd, false, errp)) { return -1; } dest_addr =3D NULL; diff --git a/net/socket.c b/net/socket.c index db25e3d9ae..1ad03fc9d4 100644 --- a/net/socket.c +++ b/net/socket.c @@ -718,7 +718,7 @@ int net_init_socket(const Netdev *netdev, const char *n= ame, } =20 if (sock->fd) { - int fd, ret, so_type; + int fd, so_type; =20 fd =3D monitor_fd_param(monitor_cur(), sock->fd, errp); if (fd =3D=3D -1) { @@ -728,10 +728,7 @@ int net_init_socket(const Netdev *netdev, const char *= name, if (so_type < 0) { return -1; } - ret =3D qemu_socket_try_set_nonblock(fd); - if (ret < 0) { - error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d= ", - name, fd); + if (!qemu_set_blocking(fd, false, errp)) { return -1; } switch (so_type) { diff --git a/net/stream.c b/net/stream.c index d893f02cab..94f823a2a7 100644 --- a/net/stream.c +++ b/net/stream.c @@ -138,7 +138,6 @@ static void net_stream_server_listening(QIOTask *task, = gpointer opaque) NetStreamData *d =3D opaque; QIOChannelSocket *listen_sioc =3D QIO_CHANNEL_SOCKET(d->listen_ioc); SocketAddress *addr; - int ret; Error *err =3D NULL; =20 if (qio_task_propagate_error(task, &err)) { @@ -149,13 +148,11 @@ static void net_stream_server_listening(QIOTask *task= , gpointer opaque) =20 addr =3D qio_channel_socket_get_local_address(listen_sioc, NULL); g_assert(addr !=3D NULL); - ret =3D qemu_socket_try_set_nonblock(listen_sioc->fd); - if (addr->type =3D=3D SOCKET_ADDRESS_TYPE_FD && ret < 0) { - qemu_set_info_str(&d->nc, "can't use file descriptor %s (errno %d)= ", - addr->u.fd.str, -ret); + if (!qemu_set_blocking(listen_sioc->fd, false, &err)) { + qemu_set_info_str(&d->nc, "error: %s", error_get_pretty(err)); + error_free(err); return; } - g_assert(ret =3D=3D 0); qapi_free_SocketAddress(addr); =20 d->nc.link_down =3D true; diff --git a/net/stream_data.c b/net/stream_data.c index 5af27e0d1d..03740e9f73 100644 --- a/net/stream_data.c +++ b/net/stream_data.c @@ -12,6 +12,7 @@ #include "net/net.h" #include "io/channel.h" #include "io/net-listener.h" +#include "qemu/sockets.h" =20 #include "stream_data.h" =20 @@ -154,7 +155,6 @@ int net_stream_data_client_connected(QIOTask *task, Net= StreamData *d) { QIOChannelSocket *sioc =3D QIO_CHANNEL_SOCKET(d->ioc); SocketAddress *addr; - int ret; Error *err =3D NULL; =20 if (qio_task_propagate_error(task, &err)) { @@ -166,14 +166,12 @@ int net_stream_data_client_connected(QIOTask *task, N= etStreamData *d) addr =3D qio_channel_socket_get_remote_address(sioc, NULL); g_assert(addr !=3D NULL); =20 - ret =3D qemu_socket_try_set_nonblock(sioc->fd); - if (addr->type =3D=3D SOCKET_ADDRESS_TYPE_FD && ret < 0) { - qemu_set_info_str(&d->nc, "can't use file descriptor %s (errno %d)= ", - addr->u.fd.str, -ret); + if (!qemu_set_blocking(sioc->fd, false, &err)) { + qemu_set_info_str(&d->nc, "error: %s", error_get_pretty(err)); + error_free(err); qapi_free_SocketAddress(addr); goto error; } - g_assert(ret =3D=3D 0); qapi_free_SocketAddress(addr); =20 net_socket_rs_init(&d->rs, net_stream_data_rs_finalize, false); diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 599993d40d..7654febfa5 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -270,10 +270,6 @@ void qemu_socket_set_block(int fd) g_unix_set_fd_nonblocking(fd, false, NULL); } =20 -int qemu_socket_try_set_nonblock(int fd) -{ - return g_unix_set_fd_nonblocking(fd, true, NULL) ? 0 : -errno; -} =20 int socket_set_fast_reuse(int fd) { diff --git a/util/oslib-win32.c b/util/oslib-win32.c index 1566eb57e7..bf5d478c5c 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -202,15 +202,6 @@ void qemu_socket_set_block(int fd) ioctlsocket(fd, FIONBIO, &opt); } =20 -int qemu_socket_try_set_nonblock(int fd) -{ - unsigned long opt =3D 1; - if (ioctlsocket(fd, FIONBIO, &opt) !=3D NO_ERROR) { - return -socket_error(); - } - return 0; -} - int socket_set_fast_reuse(int fd) { /* Enabling the reuse of an endpoint that was used by a socket still in --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964844; cv=none; d=zohomail.com; s=zohoarc; b=NJK16dd6G9dmfbGeK/0ajERf0Z9ezu3xqsXB/ECSsNquJgBmz9jiX+nbtBqfZv4cD52Gfn/vhD/oNNNxPStpdv7YXM3a2ofMCRr5vzV2x5UXDSiVxNycDWpiCzFObXbLCAlusRLHlUF9Z8QuL1Vjaezfl22XOIqW/xBcA+J4A34= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757964844; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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(unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-FzLUl7uh; Mon, 15 Sep 2025 22:31:18 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964678; bh=zrq9XhA2TuK4K/azMAe1NuiXl/HbWLCQkj9cUHTX4o8=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=etZXnylO4DecNbboxCe7zXpVnge2Jb6nXifyTFcsweaDcU8i0b3iSI6hFQ9EWu53Y iBUVYRcB4b0csdxRgng0ixcYA6Z+MD0OtXnkiTuhPLr7woJ7s0+qKHWeeU6PuNFwuh H4fQYYYzjWOS317OPtzbxuHFblT51N3OW1Q4cFRY= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com Subject: [PATCH v4 08/12] io/channel-socket: rework qio_channel_socket_copy_fds() Date: Mon, 15 Sep 2025 22:31:00 +0300 Message-ID: <20250915193105.230085-9-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964846471116600 We want to switch from qemu_socket_set_block() to newer qemu_set_blocking(), which provides return status of operation, to handle errors. Still, we want to keep qio_channel_socket_readv() interface clean, as currently it allocate @fds only on success. So, in case of error, we should close all incoming fds and keep user's @fds untouched or zero. Let's make separate functions qio_channel_handle_fds() and qio_channel_cleanup_fds(), to achieve what we want. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- include/io/channel.h | 8 +++--- io/channel-socket.c | 67 +++++++++++++++++++++++++++++++++----------- 2 files changed, 55 insertions(+), 20 deletions(-) diff --git a/include/io/channel.h b/include/io/channel.h index 999a8f5f23..0f25ae0069 100644 --- a/include/io/channel.h +++ b/include/io/channel.h @@ -124,8 +124,8 @@ struct QIOChannelClass { * incoming fds are set BLOCKING (unless * QIO_CHANNEL_READ_FLAG_FD_PRESERVE_BLOCKING flag is set) and * CLOEXEC (if available). - * @fds and @nfds are set only on success path, and untouched - * in case of errors. + * @fds and @nfds are set only on success path. Still, setting + * @fds and @nfds to zero is acceptable on failure path. */ ssize_t (*io_readv)(QIOChannel *ioc, const struct iovec *iov, @@ -246,8 +246,8 @@ void qio_channel_set_name(QIOChannel *ioc, * to call close() on each file descriptor and to * call g_free() on the array pointer in @fds. * @fds allocated and set (and @nfds is set too) - * _only_ on success path. These parameters are - * untouched in case of errors. + * _only_ on success path. Still, @fds and @nfds + * may be set to zero on failure path. * qio_channel_readv_full() guarantees that all * incoming fds are set BLOCKING (unless * QIO_CHANNEL_READ_FLAG_FD_PRESERVE_BLOCKING flag diff --git a/io/channel-socket.c b/io/channel-socket.c index f7e3cb9742..e53d9ac76f 100644 --- a/io/channel-socket.c +++ b/io/channel-socket.c @@ -464,8 +464,7 @@ static void qio_channel_socket_finalize(Object *obj) =20 #ifndef WIN32 static void qio_channel_socket_copy_fds(struct msghdr *msg, - int **fds, size_t *nfds, - bool preserve_blocking) + int **fds, size_t *nfds) { struct cmsghdr *cmsg; =20 @@ -473,7 +472,7 @@ static void qio_channel_socket_copy_fds(struct msghdr *= msg, *fds =3D NULL; =20 for (cmsg =3D CMSG_FIRSTHDR(msg); cmsg; cmsg =3D CMSG_NXTHDR(msg, cmsg= )) { - int fd_size, i; + int fd_size; int gotfds; =20 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) || @@ -491,24 +490,53 @@ static void qio_channel_socket_copy_fds(struct msghdr= *msg, gotfds =3D fd_size / sizeof(int); *fds =3D g_renew(int, *fds, *nfds + gotfds); memcpy(*fds + *nfds, CMSG_DATA(cmsg), fd_size); + *nfds +=3D gotfds; + } +} =20 - for (i =3D 0; i < gotfds; i++) { - int fd =3D (*fds)[*nfds + i]; - if (fd < 0) { - continue; - } +static bool qio_channel_handle_fds(int *fds, size_t nfds, + bool preserve_blocking, Error **errp) +{ + int *end =3D fds + nfds, *fd; + +#ifdef MSG_CMSG_CLOEXEC + if (preserve_blocking) { + /* Nothing to do */ + return true; + } +#endif =20 - if (!preserve_blocking) { - /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ - qemu_socket_set_block(fd); + for (fd =3D fds; fd !=3D end; fd++) { + if (*fd < 0) { + continue; + } + + if (!preserve_blocking) { + /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ + if (!qemu_set_blocking(*fd, true, errp)) { + return false; } + } =20 #ifndef MSG_CMSG_CLOEXEC - qemu_set_cloexec(fd); + qemu_set_cloexec(*fd); #endif + } + + return true; +} + +static void qio_channel_cleanup_fds(int **fds, size_t *nfds) +{ + for (size_t i =3D 0; i < *nfds; i++) { + if ((*fds)[i] < 0) { + continue; } - *nfds +=3D gotfds; + close((*fds)[i]); } + + g_clear_pointer(fds, g_free); + *nfds =3D 0; } =20 =20 @@ -559,9 +587,16 @@ static ssize_t qio_channel_socket_readv(QIOChannel *io= c, } =20 if (fds && nfds) { - qio_channel_socket_copy_fds( - &msg, fds, nfds, - flags & QIO_CHANNEL_READ_FLAG_FD_PRESERVE_BLOCKING); + bool preserve_blocking =3D + flags & QIO_CHANNEL_READ_FLAG_FD_PRESERVE_BLOCKING; + + qio_channel_socket_copy_fds(&msg, fds, nfds); + + if (!qio_channel_handle_fds(*fds, *nfds, + preserve_blocking, errp)) { + qio_channel_cleanup_fds(fds, nfds); + return -1; + } } =20 return ret; --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964842; cv=none; d=zohomail.com; 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(unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-ShEqLEdD; Mon, 15 Sep 2025 22:31:19 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964679; bh=wnQ0IZ7DL77fQvEXOsbqMh7icg1uQk/N/bd4HdRvKWE=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=v2/M5mwlpT5lz570Py6aWQzJZYsGHO1hEVoIuAmlOCRdfXbh5Y9/DKfBZdrN3wK83 riHX2iyrpX6rilSopa3DaLdmhwCmcilP6g58T3joxqDKWxdxJbKfzYTuJqQ/TepVYL vuuE2AQtBhfaiMBGu7BYRoR5g9BkoddVekTb/S0U= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com, Paolo Bonzini , Stefan Weil Subject: [PATCH v4 09/12] util: drop qemu_socket_set_block() Date: Mon, 15 Sep 2025 22:31:01 +0300 Message-ID: <20250915193105.230085-10-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964854901116600 Now it's unused. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- include/qemu/sockets.h | 1 - util/oslib-posix.c | 6 ------ util/oslib-win32.c | 7 ------- 3 files changed, 14 deletions(-) diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index 9512fec514..be351d85f7 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -46,7 +46,6 @@ ssize_t qemu_send_full(int s, const void *buf, size_t cou= nt) G_GNUC_WARN_UNUSED_RESULT; int socket_set_cork(int fd, int v); int socket_set_nodelay(int fd); -void qemu_socket_set_block(int fd); int socket_set_fast_reuse(int fd); =20 #ifdef WIN32 diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 7654febfa5..14cf94ac03 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -265,12 +265,6 @@ bool qemu_set_blocking(int fd, bool block, Error **err= p) return true; } =20 -void qemu_socket_set_block(int fd) -{ - g_unix_set_fd_nonblocking(fd, false, NULL); -} - - int socket_set_fast_reuse(int fd) { int val =3D 1, ret; diff --git a/util/oslib-win32.c b/util/oslib-win32.c index bf5d478c5c..b9ce2f96ee 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -195,13 +195,6 @@ bool qemu_set_blocking(int fd, bool block, Error **err= p) return true; } =20 -void qemu_socket_set_block(int fd) -{ - unsigned long opt =3D 0; - qemu_socket_unselect(fd, NULL); - ioctlsocket(fd, FIONBIO, &opt); -} - int socket_set_fast_reuse(int fd) { /* Enabling the reuse of an endpoint that was used by a socket still in --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964916; cv=none; d=zohomail.com; s=zohoarc; b=RTMuJxKpa5sn+UbDhR7/tA3r5+jAatuF8gUPMzJkgz+7Ds0/7GdaKw3C2a7D5uJAxoKqzAhD5m4pLcgdY5hz1E6BEvTYz7CzKKbYMkj3il+TNVMLRzvP65BPE3iYY1JR96n5CFpzFAq91TSlI5iMTwi81DvhPtiVf+B95vracZQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757964916; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=WBjU2DzeHyfhe8j3SHHIGQas8dMMDJS1wc7HVrGwml0=; b=deXDZaR1jJaOJzED76gYLuZ4m9dMLSxcCL5EDX8Mqa6fBu/PKGGH9nv+w84qWB9OFANGpp4MyhxWCI1acC1AuOSTcQR+3XxbLwOvZvmu2hbKLoCvSrB8uZyJraRoxwWlwySn0XylQ3eoJBp6YTmMPYJzv7PjOC1pxAnNZrs7WxY= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17579649165121011.5411380573444; Mon, 15 Sep 2025 12:35:16 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyEwY-0002Ne-0f; Mon, 15 Sep 2025 15:32:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvo-0001tT-Bq; Mon, 15 Sep 2025 15:32:09 -0400 Received: from forwardcorp1d.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uyEvN-0001wS-Vq; Mon, 15 Sep 2025 15:32:08 -0400 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:94a9:0:640:a3fa:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 4E614809BB; Mon, 15 Sep 2025 22:31:21 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-sxrkIzTi; Mon, 15 Sep 2025 22:31:20 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964680; bh=WBjU2DzeHyfhe8j3SHHIGQas8dMMDJS1wc7HVrGwml0=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=MIPf8CI8FRzvm0dyZrDh86mnYAk84f1UySzAHNW6iKlzQlAwvwo4qCCLl2wGWrKWt 9300TDkHEImrGA4jsV9mbjm7yy4UjC7pMeobXupkKhg/X2y34VHyGyfAOdZPZzz2Ry 9Ld7MibOA1BFYhI03nIx5snCNd2DDDotU4AOvRkk= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com, Paolo Bonzini , "Michael S. Tsirkin" , Gerd Hoffmann , Gustavo Romero , Stefano Garzarella , Jason Wang , Michael Roth , Kostiantyn Kostiuk , Alexander Bulekov , Bandan Das , Stefan Hajnoczi , Fabiano Rosas , Darren Kenny , Qiuhao Li , Laurent Vivier Subject: [PATCH v4 10/12] use qemu_set_blocking instead of g_unix_set_fd_nonblocking Date: Mon, 15 Sep 2025 22:31:02 +0300 Message-ID: <20250915193105.230085-11-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, T_SPF_TEMPERROR=0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964917534116600 Instead of open-coded g_unix_set_fd_nonblocking() calls, use QEMU wrapper qemu_set_blocking(). Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- chardev/char-fd.c | 4 ++-- chardev/char-pty.c | 3 +-- chardev/char-serial.c | 3 +-- chardev/char-stdio.c | 3 +-- hw/input/virtio-input-host.c | 3 +-- hw/misc/ivshmem-flat.c | 3 ++- hw/misc/ivshmem-pci.c | 7 ++++++- hw/virtio/vhost-vsock.c | 8 ++------ io/channel-command.c | 9 ++++++--- io/channel-file.c | 3 +-- net/tap-bsd.c | 12 ++++++++++-- net/tap-linux.c | 7 ++++++- net/tap-solaris.c | 7 ++++++- net/tap.c | 21 ++++++--------------- qga/commands-posix.c | 3 +-- tests/qtest/fuzz/virtio_net_fuzz.c | 2 +- tests/qtest/vhost-user-test.c | 3 +-- tests/unit/test-iov.c | 5 +++-- ui/input-linux.c | 3 +-- util/event_notifier-posix.c | 7 +++++-- util/main-loop.c | 5 ++++- 21 files changed, 67 insertions(+), 54 deletions(-) diff --git a/chardev/char-fd.c b/chardev/char-fd.c index 6f03adf872..739dc68c36 100644 --- a/chardev/char-fd.c +++ b/chardev/char-fd.c @@ -212,8 +212,8 @@ void qemu_chr_open_fd(Chardev *chr, FDChardev *s =3D FD_CHARDEV(chr); g_autofree char *name =3D NULL; =20 - if (fd_out >=3D 0 && !g_unix_set_fd_nonblocking(fd_out, true, NULL)) { - assert(!"Failed to set FD nonblocking"); + if (fd_out >=3D 0) { + qemu_set_blocking(fd_out, false, &error_abort); } =20 if (fd_out =3D=3D fd_in && fd_in >=3D 0) { diff --git a/chardev/char-pty.c b/chardev/char-pty.c index 674e9b3f14..fe6bfb043d 100644 --- a/chardev/char-pty.c +++ b/chardev/char-pty.c @@ -349,8 +349,7 @@ static void char_pty_open(Chardev *chr, } =20 close(slave_fd); - if (!g_unix_set_fd_nonblocking(master_fd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!qemu_set_blocking(master_fd, false, errp)) { return; } =20 diff --git a/chardev/char-serial.c b/chardev/char-serial.c index 0a68b4b4e0..1ff31dcde3 100644 --- a/chardev/char-serial.c +++ b/chardev/char-serial.c @@ -271,8 +271,7 @@ static void qmp_chardev_open_serial(Chardev *chr, if (fd < 0) { return; } - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!qemu_set_blocking(fd, false, errp)) { return; } tty_serial_init(fd, 115200, 'N', 8, 1); diff --git a/chardev/char-stdio.c b/chardev/char-stdio.c index 48db8d2f30..193727e807 100644 --- a/chardev/char-stdio.c +++ b/chardev/char-stdio.c @@ -107,8 +107,7 @@ static void qemu_chr_open_stdio(Chardev *chr, old_fd0_flags =3D fcntl(0, F_GETFL); old_fd1_flags =3D fcntl(1, F_GETFL); tcgetattr(0, &oldtty); - if (!g_unix_set_fd_nonblocking(0, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!qemu_set_blocking(0, false, errp)) { return; } atexit(term_exit); diff --git a/hw/input/virtio-input-host.c b/hw/input/virtio-input-host.c index bbfee9d3b9..9f62532559 100644 --- a/hw/input/virtio-input-host.c +++ b/hw/input/virtio-input-host.c @@ -114,8 +114,7 @@ static void virtio_input_host_realize(DeviceState *dev,= Error **errp) error_setg_file_open(errp, errno, vih->evdev); return; } - if (!g_unix_set_fd_nonblocking(vih->fd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!qemu_set_blocking(vih->fd, false, errp)) { goto err_close; } =20 diff --git a/hw/misc/ivshmem-flat.c b/hw/misc/ivshmem-flat.c index fe4be6be17..e83e6c6ee9 100644 --- a/hw/misc/ivshmem-flat.c +++ b/hw/misc/ivshmem-flat.c @@ -154,7 +154,8 @@ static void ivshmem_flat_add_vector(IvshmemFTState *s, = IvshmemPeer *peer, * peer. */ peer->vector[peer->vector_counter].id =3D peer->vector_counter; - g_unix_set_fd_nonblocking(vector_fd, true, NULL); + /* WARNING: qemu_socket_set_nonblock() return code ignored */ + qemu_set_blocking(vector_fd, false, &error_warn); event_notifier_init_fd(&peer->vector[peer->vector_counter].event_notif= ier, vector_fd); =20 diff --git a/hw/misc/ivshmem-pci.c b/hw/misc/ivshmem-pci.c index d47ae739d6..2748db9286 100644 --- a/hw/misc/ivshmem-pci.c +++ b/hw/misc/ivshmem-pci.c @@ -540,7 +540,12 @@ static void process_msg_connect(IVShmemState *s, uint1= 6_t posn, int fd, =20 IVSHMEM_DPRINTF("eventfds[%d][%d] =3D %d\n", posn, vector, fd); event_notifier_init_fd(&peer->eventfds[vector], fd); - g_unix_set_fd_nonblocking(fd, true, NULL); /* msix/irqfd poll non bloc= k */ + + /* msix/irqfd poll non block */ + if (!qemu_set_blocking(fd, false, errp)) { + close(fd); + return; + } =20 if (posn =3D=3D s->vm_id) { setup_interrupt(s, vector, errp); diff --git a/hw/virtio/vhost-vsock.c b/hw/virtio/vhost-vsock.c index 6e4088831f..107d88babe 100644 --- a/hw/virtio/vhost-vsock.c +++ b/hw/virtio/vhost-vsock.c @@ -147,9 +147,7 @@ static void vhost_vsock_device_realize(DeviceState *dev= , Error **errp) return; } =20 - if (!g_unix_set_fd_nonblocking(vhostfd, true, NULL)) { - error_setg_errno(errp, errno, - "vhost-vsock: unable to set non-blocking mode= "); + if (!qemu_set_blocking(vhostfd, false, errp)) { return; } } else { @@ -160,9 +158,7 @@ static void vhost_vsock_device_realize(DeviceState *dev= , Error **errp) return; } =20 - if (!g_unix_set_fd_nonblocking(vhostfd, true, NULL)) { - error_setg_errno(errp, errno, - "Failed to set FD nonblocking"); + if (!qemu_set_blocking(vhostfd, false, errp)) { return; } } diff --git a/io/channel-command.c b/io/channel-command.c index 8966dd3a2b..8ae9a026b3 100644 --- a/io/channel-command.c +++ b/io/channel-command.c @@ -277,9 +277,12 @@ static int qio_channel_command_set_blocking(QIOChannel= *ioc, cioc->blocking =3D enabled; #else =20 - if ((cioc->writefd >=3D 0 && !g_unix_set_fd_nonblocking(cioc->writefd,= !enabled, NULL)) || - (cioc->readfd >=3D 0 && !g_unix_set_fd_nonblocking(cioc->readfd, != enabled, NULL))) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (cioc->writefd >=3D 0 && + !qemu_set_blocking(cioc->writefd, enabled, errp)) { + return -1; + } + if (cioc->readfd >=3D 0 && + !qemu_set_blocking(cioc->readfd, enabled, errp)) { return -1; } #endif diff --git a/io/channel-file.c b/io/channel-file.c index ca3f180cc2..5cef75a67c 100644 --- a/io/channel-file.c +++ b/io/channel-file.c @@ -223,8 +223,7 @@ static int qio_channel_file_set_blocking(QIOChannel *io= c, #else QIOChannelFile *fioc =3D QIO_CHANNEL_FILE(ioc); =20 - if (!g_unix_set_fd_nonblocking(fioc->fd, !enabled, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!qemu_set_blocking(fioc->fd, enabled, errp)) { return -1; } return 0; diff --git a/net/tap-bsd.c b/net/tap-bsd.c index b4c84441ba..2e444e59b5 100644 --- a/net/tap-bsd.c +++ b/net/tap-bsd.c @@ -98,7 +98,12 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hd= r, return -1; } } - g_unix_set_fd_nonblocking(fd, true, NULL); + + if (!qemu_set_blocking(fd, false, errp) { + close(fd); + return -1; + } + return fd; } =20 @@ -189,7 +194,10 @@ int tap_open(char *ifname, int ifname_size, int *vnet_= hdr, goto error; } =20 - g_unix_set_fd_nonblocking(fd, true, NULL); + if (!qemu_set_blocking(fd, false, errp) { + goto error; + } + return fd; =20 error: diff --git a/net/tap-linux.c b/net/tap-linux.c index 22ec2f45d2..e832810665 100644 --- a/net/tap-linux.c +++ b/net/tap-linux.c @@ -124,7 +124,12 @@ int tap_open(char *ifname, int ifname_size, int *vnet_= hdr, return -1; } pstrcpy(ifname, ifname_size, ifr.ifr_name); - g_unix_set_fd_nonblocking(fd, true, NULL); + + if (!qemu_set_blocking(fd, false, errp)) { + close(fd); + return -1; + } + return fd; } =20 diff --git a/net/tap-solaris.c b/net/tap-solaris.c index 51b7830bef..af2ebb16f5 100644 --- a/net/tap-solaris.c +++ b/net/tap-solaris.c @@ -198,7 +198,12 @@ int tap_open(char *ifname, int ifname_size, int *vnet_= hdr, return -1; } } - g_unix_set_fd_nonblocking(fd, true, NULL); + + if (!qemu_set_blocking(fd, false, errp)) { + close(fd); + return -1; + } + return fd; } =20 diff --git a/net/tap.c b/net/tap.c index f7df702f97..f37133e301 100644 --- a/net/tap.c +++ b/net/tap.c @@ -627,8 +627,7 @@ int net_init_bridge(const Netdev *netdev, const char *n= ame, return -1; } =20 - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!qemu_set_blocking(fd, false, errp)) { return -1; } vnet_hdr =3D tap_probe_vnet_hdr(fd, errp); @@ -729,9 +728,7 @@ static void net_init_tap_one(const NetdevTapOptions *ta= p, NetClientState *peer, error_propagate(errp, err); goto failed; } - if (!g_unix_set_fd_nonblocking(vhostfd, true, NULL)) { - error_setg_errno(errp, errno, "%s: Can't use file descript= or %d", - name, fd); + if (!qemu_set_blocking(vhostfd, false, errp)) { goto failed; } } else { @@ -741,8 +738,7 @@ static void net_init_tap_one(const NetdevTapOptions *ta= p, NetClientState *peer, "tap: open vhost char device failed"); goto failed; } - if (!g_unix_set_fd_nonblocking(vhostfd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblockin= g"); + if (!qemu_set_blocking(vhostfd, false, errp)) { goto failed; } } @@ -839,9 +835,7 @@ int net_init_tap(const Netdev *netdev, const char *name, return -1; } =20 - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { - error_setg_errno(errp, errno, "%s: Can't use file descriptor %= d", - name, fd); + if (!qemu_set_blocking(fd, false, errp)) { close(fd); return -1; } @@ -895,10 +889,8 @@ int net_init_tap(const Netdev *netdev, const char *nam= e, goto free_fail; } =20 - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { + if (!qemu_set_blocking(fd, false, errp)) { ret =3D -1; - error_setg_errno(errp, errno, "%s: Can't use file descript= or %d", - name, fd); goto free_fail; } =20 @@ -951,8 +943,7 @@ free_fail: return -1; } =20 - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!qemu_set_blocking(fd, false, errp)) { return -1; } vnet_hdr =3D tap_probe_vnet_hdr(fd, errp); diff --git a/qga/commands-posix.c b/qga/commands-posix.c index 12bc086d79..5070f27d75 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -503,9 +503,8 @@ int64_t qmp_guest_file_open(const char *path, const cha= r *mode, /* set fd non-blocking to avoid common use cases (like reading from a * named pipe) from hanging the agent */ - if (!g_unix_set_fd_nonblocking(fileno(fh), true, NULL)) { + if (!qemu_set_blocking(fileno(fh), false, errp)) { fclose(fh); - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); return -1; } =20 diff --git a/tests/qtest/fuzz/virtio_net_fuzz.c b/tests/qtest/fuzz/virtio_n= et_fuzz.c index e239875e3b..e9b13d3e4f 100644 --- a/tests/qtest/fuzz/virtio_net_fuzz.c +++ b/tests/qtest/fuzz/virtio_net_fuzz.c @@ -132,7 +132,7 @@ static void *virtio_net_test_setup_socket(GString *cmd_= line, void *arg) { int ret =3D socketpair(PF_UNIX, SOCK_STREAM, 0, sockfds); g_assert_cmpint(ret, !=3D, -1); - g_unix_set_fd_nonblocking(sockfds[0], true, NULL); + qemu_set_blocking(sockfds[0], false, &error_abort); sockfds_initialized =3D true; g_string_append_printf(cmd_line, " -netdev socket,fd=3D%d,id=3Dhs0 ", sockfds[1]); diff --git a/tests/qtest/vhost-user-test.c b/tests/qtest/vhost-user-test.c index 56472ca709..e39d6e7787 100644 --- a/tests/qtest/vhost-user-test.c +++ b/tests/qtest/vhost-user-test.c @@ -471,8 +471,7 @@ static void chr_read(void *opaque, const uint8_t *buf, = int size) * The receive function forces it to be blocking, * so revert it back to non-blocking. */ - g_unix_set_fd_nonblocking(fd, true, &err); - g_assert_no_error(err); + qemu_set_blocking(fd, false, &error_abort); break; =20 case VHOST_USER_SET_LOG_BASE: diff --git a/tests/unit/test-iov.c b/tests/unit/test-iov.c index 75bc3be005..63e2b1583c 100644 --- a/tests/unit/test-iov.c +++ b/tests/unit/test-iov.c @@ -1,4 +1,5 @@ #include "qemu/osdep.h" +#include "qapi/error.h" #include "qemu/iov.h" #include "qemu/sockets.h" =20 @@ -186,7 +187,7 @@ static void test_io(void) =20 close(sv[0]); FD_SET(sv[1], &fds); - g_unix_set_fd_nonblocking(sv[1], true, NULL); + qemu_set_blocking(sv[1], false, &error_abort); r =3D g_test_rand_int_range(sz / 2, sz); setsockopt(sv[1], SOL_SOCKET, SO_SNDBUF, &r, sizeof(r)); =20 @@ -222,7 +223,7 @@ static void test_io(void) =20 close(sv[1]); FD_SET(sv[0], &fds); - g_unix_set_fd_nonblocking(sv[0], true, NULL); + qemu_set_blocking(sv[0], false, &error_abort); r =3D g_test_rand_int_range(sz / 2, sz); setsockopt(sv[0], SOL_SOCKET, SO_RCVBUF, &r, sizeof(r)); usleep(500000); diff --git a/ui/input-linux.c b/ui/input-linux.c index 92e1a1aa64..44d0c15a9b 100644 --- a/ui/input-linux.c +++ b/ui/input-linux.c @@ -316,8 +316,7 @@ static void input_linux_complete(UserCreatable *uc, Err= or **errp) error_setg_file_open(errp, errno, il->evdev); return; } - if (!g_unix_set_fd_nonblocking(il->fd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!qemu_set_blocking(il->fd, false, errp)) { return; } =20 diff --git a/util/event_notifier-posix.c b/util/event_notifier-posix.c index 76420c5b56..83fdbb96bb 100644 --- a/util/event_notifier-posix.c +++ b/util/event_notifier-posix.c @@ -11,6 +11,7 @@ */ =20 #include "qemu/osdep.h" +#include "qapi/error.h" #include "qemu/cutils.h" #include "qemu/event_notifier.h" #include "qemu/main-loop.h" @@ -36,6 +37,7 @@ int event_notifier_init(EventNotifier *e, int active) { int fds[2]; int ret; + Error *local_err =3D NULL; =20 #ifdef CONFIG_EVENTFD ret =3D eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC); @@ -52,11 +54,11 @@ int event_notifier_init(EventNotifier *e, int active) if (!g_unix_open_pipe(fds, FD_CLOEXEC, NULL)) { return -errno; } - if (!g_unix_set_fd_nonblocking(fds[0], true, NULL)) { + if (!qemu_set_blocking(fds[0], false, &local_err)) { ret =3D -errno; goto fail; } - if (!g_unix_set_fd_nonblocking(fds[1], true, NULL)) { + if (!qemu_set_blocking(fds[1], false, &local_err)) { ret =3D -errno; goto fail; } @@ -70,6 +72,7 @@ int event_notifier_init(EventNotifier *e, int active) return 0; =20 fail: + error_report_err(local_err); close(fds[0]); close(fds[1]); return ret; diff --git a/util/main-loop.c b/util/main-loop.c index 51aeb2432e..b8ddda8f5e 100644 --- a/util/main-loop.c +++ b/util/main-loop.c @@ -114,7 +114,10 @@ static int qemu_signal_init(Error **errp) return -errno; } =20 - g_unix_set_fd_nonblocking(sigfd, true, NULL); + if (!qemu_set_blocking(sigfd, false, errp)) { + close(sigfd); + return -EINVAL; + } =20 qemu_set_fd_handler(sigfd, sigfd_handler, NULL, (void *)(intptr_t)sigf= d); =20 --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1757964928; cv=none; d=zohomail.com; s=zohoarc; b=lXT4zQLcOLdCnP+QzuQaOoVoutWpdLNqJ4YJd7soOpUC4G+ISdXcOBXDDWHc50B8xcFdX4jbLQ5tcOipVHMCsS4BLKGOx9xCLLZPsCQFga8ojc7qqOxfvyHct1Hdag2mDmDAcLlfN/Dy4rP5pkyShxA8oFUO8bPfX4jFw6GCaLI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757964928; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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(unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-xDAS6Xfu; Mon, 15 Sep 2025 22:31:21 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964681; bh=hUqfmUSn/mZjfZQ9QHFz6axFHBATGjxge6kva+qLpew=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=jpp2ZGBJOMuJyRkg9nkJnnBhQz9ls5e7h5wjfLqapZI3oxFHUXgRo0pCNkBFjr7DH 1SIoGQiPNyTbjLiwcd1UBlPFODE/v5zuC3OfRIW1obtw6GYycvaoGZ+0Z1rsqPavvC Axuo3OT8y69X9ryYN3QAb1G5LOhPO6k3+BUXa2OI= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com, Paolo Bonzini Subject: [PATCH v4 11/12] chardev: qemu_chr_open_fd(): add errp Date: Mon, 15 Sep 2025 22:31:03 +0300 Message-ID: <20250915193105.230085-12-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964929552116601 Every caller already support errp, let's go further. Suggested-by: Daniel P. Berrang=C3=A9 Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- chardev/char-fd.c | 12 ++++++++---- chardev/char-file.c | 6 +++++- chardev/char-pipe.c | 9 ++++++++- chardev/char-serial.c | 5 ++++- chardev/char-stdio.c | 7 +++++-- include/chardev/char-fd.h | 2 +- 6 files changed, 31 insertions(+), 10 deletions(-) diff --git a/chardev/char-fd.c b/chardev/char-fd.c index 739dc68c36..4ee286f323 100644 --- a/chardev/char-fd.c +++ b/chardev/char-fd.c @@ -206,14 +206,16 @@ int qmp_chardev_open_file_source(char *src, int flags= , Error **errp) } =20 /* open a character device to a unix fd */ -void qemu_chr_open_fd(Chardev *chr, - int fd_in, int fd_out) +bool qemu_chr_open_fd(Chardev *chr, + int fd_in, int fd_out, Error **errp) { FDChardev *s =3D FD_CHARDEV(chr); g_autofree char *name =3D NULL; =20 if (fd_out >=3D 0) { - qemu_set_blocking(fd_out, false, &error_abort); + if (!qemu_set_blocking(fd_out, false, errp)) { + return false; + } } =20 if (fd_out =3D=3D fd_in && fd_in >=3D 0) { @@ -221,7 +223,7 @@ void qemu_chr_open_fd(Chardev *chr, name =3D g_strdup_printf("chardev-file-%s", chr->label); qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); s->ioc_out =3D QIO_CHANNEL(object_ref(s->ioc_in)); - return; + return true; } =20 if (fd_in >=3D 0) { @@ -236,6 +238,8 @@ void qemu_chr_open_fd(Chardev *chr, name =3D g_strdup_printf("chardev-file-out-%s", chr->label); qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); } + + return true; } =20 static void char_fd_class_init(ObjectClass *oc, const void *data) diff --git a/chardev/char-file.c b/chardev/char-file.c index a9e8c5e0d7..89e9cb849c 100644 --- a/chardev/char-file.c +++ b/chardev/char-file.c @@ -92,7 +92,11 @@ static void qmp_chardev_open_file(Chardev *chr, } } =20 - qemu_chr_open_fd(chr, in, out); + if (!qemu_chr_open_fd(chr, in, out, errp)) { + qemu_close(out); + qemu_close(in); + return; + } #endif } =20 diff --git a/chardev/char-pipe.c b/chardev/char-pipe.c index 3d1b0ce2d2..e9f3bb8290 100644 --- a/chardev/char-pipe.c +++ b/chardev/char-pipe.c @@ -150,7 +150,14 @@ static void qemu_chr_open_pipe(Chardev *chr, return; } } - qemu_chr_open_fd(chr, fd_in, fd_out); + + if (!qemu_chr_open_fd(chr, fd_in, fd_out, errp)) { + close(fd_in); + if (fd_out !=3D fd_in) { + close(fd_out); + } + return; + } } =20 #endif /* !_WIN32 */ diff --git a/chardev/char-serial.c b/chardev/char-serial.c index 1ff31dcde3..c622d758db 100644 --- a/chardev/char-serial.c +++ b/chardev/char-serial.c @@ -276,7 +276,10 @@ static void qmp_chardev_open_serial(Chardev *chr, } tty_serial_init(fd, 115200, 'N', 8, 1); =20 - qemu_chr_open_fd(chr, fd, fd); + if (!qemu_chr_open_fd(chr, fd, fd, errp)) { + close(fd); + return; + } } #endif /* __linux__ || __sun__ */ =20 diff --git a/chardev/char-stdio.c b/chardev/char-stdio.c index 193727e807..2568164a10 100644 --- a/chardev/char-stdio.c +++ b/chardev/char-stdio.c @@ -110,14 +110,17 @@ static void qemu_chr_open_stdio(Chardev *chr, if (!qemu_set_blocking(0, false, errp)) { return; } + + if (!qemu_chr_open_fd(chr, 0, 1, errp)) { + return; + } + atexit(term_exit); =20 memset(&act, 0, sizeof(act)); act.sa_handler =3D term_stdio_handler; sigaction(SIGCONT, &act, NULL); =20 - qemu_chr_open_fd(chr, 0, 1); - stdio_allow_signal =3D !opts->has_signal || opts->signal; qemu_chr_set_echo_stdio(chr, false); } diff --git a/include/chardev/char-fd.h b/include/chardev/char-fd.h index 9de0e440de..6fe43062ca 100644 --- a/include/chardev/char-fd.h +++ b/include/chardev/char-fd.h @@ -41,7 +41,7 @@ typedef struct FDChardev FDChardev; DECLARE_INSTANCE_CHECKER(FDChardev, FD_CHARDEV, TYPE_CHARDEV_FD) =20 -void qemu_chr_open_fd(Chardev *chr, int fd_in, int fd_out); +bool qemu_chr_open_fd(Chardev *chr, int fd_in, int fd_out, Error **errp); int qmp_chardev_open_file_source(char *src, int flags, Error **errp); =20 #endif /* CHAR_FD_H */ --=20 2.48.1 From nobody Sun Sep 28 16:35:57 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; 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(unknown [2a02:6bf:8080:184::1:6]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id AVVVql1FrOs0-s5AhM4u2; Mon, 15 Sep 2025 22:31:22 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1757964682; bh=U0iIBse8ZC8ENtg6o1H6rx8s5OyGvuvA2kcUutepzk4=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=nWct6KKZ+zpUIAyWiBqE1h5DeuiT5qPM8W5G21p/nLhKDHy0XwDLIU74pdZQ8AGY5 WtDfj6t+SwgbW0CLi42wmgBlAmvDXuRMC8XBTbFWX5cmLKjPSyjbYShzQK4ckjT6Gd HZHg38lwv9TifSGzeEmRqEtx3ktGOoSN1W3sOuSs= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: berrange@redhat.com Cc: qemu-devel@nongnu.org, peterx@redhat.com, qemu-block@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, marcandre.lureau@redhat.com, Paolo Bonzini Subject: [PATCH v4 12/12] chardev: close an fd on failure path Date: Mon, 15 Sep 2025 22:31:04 +0300 Message-ID: <20250915193105.230085-13-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250915193105.230085-1-vsementsov@yandex-team.ru> References: <20250915193105.230085-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1757964845153116600 There are at least two failure paths, where we forget to close an fd. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniel P. Berrang=C3=A9 --- chardev/char-pty.c | 1 + chardev/char-serial.c | 1 + 2 files changed, 2 insertions(+) diff --git a/chardev/char-pty.c b/chardev/char-pty.c index fe6bfb043d..b066f01412 100644 --- a/chardev/char-pty.c +++ b/chardev/char-pty.c @@ -350,6 +350,7 @@ static void char_pty_open(Chardev *chr, =20 close(slave_fd); if (!qemu_set_blocking(master_fd, false, errp)) { + close(master_fd); return; } =20 diff --git a/chardev/char-serial.c b/chardev/char-serial.c index c622d758db..4c6ca713eb 100644 --- a/chardev/char-serial.c +++ b/chardev/char-serial.c @@ -272,6 +272,7 @@ static void qmp_chardev_open_serial(Chardev *chr, return; } if (!qemu_set_blocking(fd, false, errp)) { + close(fd); return; } tty_serial_init(fd, 115200, 'N', 8, 1); --=20 2.48.1