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Mon, 28 Dec 2020 16:08:57 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1609168137; bh=00EAiCU6NQFSqynFLpxVcMN9uW9kgzNco1ggwNTcC/0=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=FD1QyyqvkpHmfG+ONABG+oM+idtn4VWTxpZIZsUKAsFA/R8lYxL7pf1mkoEVm1aUv WQLLgknQ4TBeoUFk947aqT83jib71RqPpT9j3fp/h4RM65Qr9Dftiycm0rrvQJGCiL BmxIrpyClNojtA9BDm6I401BkuE4UtWEKqVB839I= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Date: Mon, 28 Dec 2020 16:08:55 +0100 From: Lukas Straub To: qemu-devel Subject: [PATCH v14 5/7] io/channel-tls.c: make qio_channel_tls_shutdown thread-safe Message-ID: <5bd8733f583f3558b32250fd0eb576b7aa756485.1609167865.git.lukasstraub2@web.de> In-Reply-To: References: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/scE93YRDVni0+txa/3euzwM"; protocol="application/pgp-signature"; micalg=pgp-sha256 X-Provags-ID: V03:K1:2d5XceAMn6EOZVFtE96Uu08bfkSxIOyp+j1/HkD/WtBmqLtC5CE vNi9/QTsf962Yro6zEq8KGtJuA81vBrPMG8EH4QqDaNJsZyC88K6+lOTYcQ28X5IkOe80Gu +OvG28WFgG+Rd4a60ozsXjuPEH4r2MWQ/A9C9uyZ9UWQ3GcWy8epq2W6FIqJJvY0NMAxRQh TyWxgA3KHKcHyYP1VoKKg== X-UI-Out-Filterresults: notjunk:1;V03:K0:yv5WJ8ovZfg=:8a2H7BKV9qgHzZO+nzU9eT i+UFHFd/wVnfN2w6bBmuTdjypwxkFqonZrKvK601JUlU1oUbvdExQtiykZLbitPEJMm7hOiIE 4KCL3Gj4JbFQH8jB33KKv3ArAuZNfJuWq+fomgjby2bGO+QGOApWgvYEIUy4wB/GEBtetjJpY mY/z6pmoQ5TtXPb78VzSgZ8uvM2JG3yzXucCAkDV6X+0wwqSbaiDTXYI2nJYB/eiCCb0W69OZ o/9tsSBQood2PczvmFclxAHledQOUQ1VisYKTt24oEFHfqZ9AQTAcEtqeQBHqjaI69qMTGlLb e5c0zPbEzXq0Hevp+kGYjmEQniJZHDr7V2vQzJ9qKqZtXRHrEAqw0ECrAj5TktWHaQBf7etes LLHjhFfsiWtdI8KEwX+KO4QXSPRhNo0+3bIM597S7oYRtVgsLh6T1Sviq31olRZpV1JPcae4Z sBIplo9LnH9bzThrjcBurQBFpzkmTMcTPnLUYh7eTFgyVa4AfIF6TgH3k9yKJyz8C/mXHMns4 LBDHpjcAwOcBaL4Qa0YAbPyqJbdcEb9VfrFIpZqlLn+VjKOmgehhukD1xo2ireVuPbSmxkpGs bHIIqb+/sIo1Cn3uXrLEQhiPTw6GoD2xueloqb2Pb/5keGI8V3hS/3kA5mfqDEFOpKJCNe4Wo 6ViP07oZM352xtnTVdafb8EnbN2F6QS2f3Llmc4ClimfCYLuDh2uY7Ev+dSJeg3nWWiWz9sjk IUGro4J0FpuTyfQyR/VC7QKoKKU+4JJg4pFwGmy5CvuaFsaM2PXob5oPUIt7SG79eZGP0cCj3 62hABDuof42KA6SO5wTJsyORXmIbFYGtI2eJeJzPEgKdKE0ySdN4euZNdE5q4SDVoviyfnFKC TTU1ioDBq6Xvf9IFysIH+3V8oH+f8UGY+dZ6VCGzg= Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" Make qio_channel_tls_shutdown thread-safe by using atomics when accessing tioc->shutdown. Signed-off-by: Lukas Straub Acked-by: Stefan Hajnoczi Reviewed-by: Daniel P. Berrang=C3=A9 --- io/channel-tls.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/io/channel-tls.c b/io/channel-tls.c index 388f019977..2ae1b92fc0 100644 --- a/io/channel-tls.c +++ b/io/channel-tls.c @@ -23,6 +23,7 @@ #include "qemu/module.h" #include "io/channel-tls.h" #include "trace.h" +#include "qemu/atomic.h" static ssize_t qio_channel_tls_write_handler(const char *buf, @@ -277,7 +278,8 @@ static ssize_t qio_channel_tls_readv(QIOChannel *ioc, return QIO_CHANNEL_ERR_BLOCK; } } else if (errno =3D=3D ECONNABORTED && - (tioc->shutdown & QIO_CHANNEL_SHUTDOWN_READ)) { + (qatomic_load_acquire(&tioc->shutdown) & + QIO_CHANNEL_SHUTDOWN_READ)) { return 0; } @@ -361,7 +363,7 @@ static int qio_channel_tls_shutdown(QIOChannel *ioc, { QIOChannelTLS *tioc =3D QIO_CHANNEL_TLS(ioc); - tioc->shutdown |=3D how; + qatomic_or(&tioc->shutdown, how); return qio_channel_shutdown(tioc->master, how, errp); } -- 2.29.2 --Sig_/scE93YRDVni0+txa/3euzwM Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEg/qxWKDZuPtyYo+kNasLKJxdslgFAl/p9QcACgkQNasLKJxd slhbIA//ZX4FIEmn0faamdQzIUVvyWbfe/RcPwfRomASZ+4VITUBasb6Ur25MqBb B6BSprvIZGVJOj8BK1NzSCoYJPt0LM8DucMR8yciXFMZgiy71DrLUiHmr6KWv90+ xQQM/fBxQ0Shp0IZ0XeW3Yd0f0rjTrBhSB/FYr/HikDzGMOBvTnRgv2RkjfYGCCa gO4EouO6hy9qPMkBhgX/LiF3SjY4RA4+tZRcvBl5+34vQVOY890ENdqX53bhSxXt SDab8dpCzYZgPaMPVvvZ/4nhwYtgq/HwmKfS1IOj4dvh0ilaCl4FOUdDpmgdg6gq 77UnotP6I1B/rhJJ+ePiKrNaCHi1EH1VvH7qZZxxIVMdnYgH+J4VfK2+5lAiCwH6 OKtkHH7sbRp2sGs3MOLTa8Mlz0SVoxD8RYM/1LIgG3wNrOFRnPizC0pDqeP481KH RcTTMCTe/qiw+twHI2tyf3SZM+gOm8FyJjWAKSEdO2AYOEvlAeYQzX2A3BQOndDg yBlAWwUKqMbQfO4M+i/HUwZ8jFoDW/ZBEUf1MmgD4hAEX2af32f9vVCpBxDfjjAY xDKOxCJupDb1/eCgw9Ev72QGjbUcBoTYN1n/kUyYSUl2AqOgfN7Ge55smqyEpIKS /SSXaglSIh8wRs2Ij48n9XdnTh8dv4yf+SVMcZ8RBUU8l1HEjmI= =iSRJ -----END PGP SIGNATURE----- --Sig_/scE93YRDVni0+txa/3euzwM--