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[144.168.56.201]) by smtp.gmail.com with ESMTPSA id n2-20020aa79842000000b00551fa0e2b2dsm699573pfq.206.2022.09.20.03.32.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Sep 2022 03:32:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=bbLaeaUcnrqs4G10jLV3MgXG0ekzESqKda4qvIcsJ/k=; b=etzPEDtbVhhxtaj79nNwWJ57RmyzdvePZmYI1xTzzLyfGGBh4orgwNPlkuzTaGJ9nL iyU3l1Q5YNGBYOFktvgN9fZxIIVdK/7gPtibyDmNzUKaAoqpmtDbT1sPfJXZm+mITMgM aX+qEZLArRSvsUCVHsyx15OCZsx6yKBAjwsW29mrSMqZymmH2M4wSviJoaoo2y+ZM8H6 FbjubL1czpwVi7/LcXX1LI+BAP6yj6LlzVTLXWvjQLGRa1dACfUyp0mWPlT4vcXbMBC/ vn9m/o/axqNYepQTSyEIKk0nIn0KWtsu45YizO0PMKakR8RxYXzN8+kQQGbWc+GH4iiC iWBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=bbLaeaUcnrqs4G10jLV3MgXG0ekzESqKda4qvIcsJ/k=; b=kOkpfyUJU37RxKaiclkocABy9zqs6sbRPAEedNGYF1bjtXz+RzC8qqIOXiDD9ZfWSv GVNb36Cj9Rp4rXyXEoTczyZP9pigQ5zhqHCeiJv6JazYCs15bkeR9ckH28h879PNPG8c ab6QSv17FjGr9RpE7L3Kyq6XVoO7GjKAQYSmcOhI3x+ZwypNh9a9/LcjgxvrZ0CtTM1j OtQf9sjmNRnYlojJ9AKunCbkr2ARxG5D7UaAurVthEGq6nU8xYIPWmb5pTsKefba+nC8 TW2+YbBD3GKRce8LRU0T/5x0H8jZFE7Z49v3qXaQ4yFhY+DzGTPFQaveTUovvEVCFklD yPYA== X-Gm-Message-State: ACrzQf2BmNoy6GZFT9NKs2cwOz8xdi5DmRU8bnFUbTKQo3zzwPaLyhg2 4iTa3MYtODI0SXFvvchpNlYDw20/zjk= X-Google-Smtp-Source: AMsMyM5XGfzNbPHgQlVsfWMnwlnAj71cBW+jiHY2n+0/KfgDWc6tJN/r3RvpdB3JRjVhozKdIPBtLQ== X-Received: by 2002:a17:90b:1c07:b0:200:9728:b8cd with SMTP id oc7-20020a17090b1c0700b002009728b8cdmr3211788pjb.139.1663669977530; Tue, 20 Sep 2022 03:32:57 -0700 (PDT) From: Bin Meng To: qemu-devel@nongnu.org Cc: Xuzhou Cheng , Bin Meng , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Laurent Vivier , Paolo Bonzini , Thomas Huth Subject: [PATCH v2 16/39] tests/qtest: Use send/recv for socket communication Date: Tue, 20 Sep 2022 18:31:36 +0800 Message-Id: <20220920103159.1865256-17-bmeng.cn@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220920103159.1865256-1-bmeng.cn@gmail.com> References: <20220920103159.1865256-1-bmeng.cn@gmail.com> 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=2607:f8b0:4864:20::102d; envelope-from=bmeng.cn@gmail.com; helo=mail-pj1-x102d.google.com 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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" X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1663676721801100001 Content-Type: text/plain; charset="utf-8" From: Xuzhou Cheng Socket communication in the libqtest and libqmp codes uses read() and write() which work on any file descriptor on *nix, and sockets in *nix are an example of a file descriptor. However sockets on Windows do not use *nix-style file descriptors, so read() and write() cannot be used on sockets on Windows. Switch over to use send() and recv() instead which work on both Windows and *nix. Signed-off-by: Xuzhou Cheng Signed-off-by: Bin Meng Reviewed-by: Marc-Andr=C3=A9 Lureau --- Changes in v2: - Introduce qemu_send_full() and use it include/qemu/sockets.h | 2 ++ tests/qtest/libqmp.c | 5 +++-- tests/qtest/libqtest.c | 4 ++-- util/osdep.c | 33 +++++++++++++++++++++++++++++++++ 4 files changed, 40 insertions(+), 4 deletions(-) diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index 038faa157f..8ff7832eba 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -15,6 +15,8 @@ int inet_aton(const char *cp, struct in_addr *ia); bool fd_is_socket(int fd); int qemu_socket(int domain, int type, int protocol); int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen); +ssize_t qemu_send_full(int s, const void *buf, size_t count) + 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); diff --git a/tests/qtest/libqmp.c b/tests/qtest/libqmp.c index ade26c15f0..2b08382e5d 100644 --- a/tests/qtest/libqmp.c +++ b/tests/qtest/libqmp.c @@ -23,6 +23,7 @@ #endif =20 #include "qemu/cutils.h" +#include "qemu/sockets.h" #include "qapi/error.h" #include "qapi/qmp/json-parser.h" #include "qapi/qmp/qjson.h" @@ -36,7 +37,7 @@ typedef struct { =20 static void socket_send(int fd, const char *buf, size_t size) { - size_t res =3D qemu_write_full(fd, buf, size); + ssize_t res =3D qemu_send_full(fd, buf, size); =20 assert(res =3D=3D size); } @@ -69,7 +70,7 @@ QDict *qmp_fd_receive(int fd) ssize_t len; char c; =20 - len =3D read(fd, &c, 1); + len =3D recv(fd, &c, 1, 0); if (len =3D=3D -1 && errno =3D=3D EINTR) { continue; } diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c index a0f28ddf8e..a25a8b47d0 100644 --- a/tests/qtest/libqtest.c +++ b/tests/qtest/libqtest.c @@ -436,7 +436,7 @@ void qtest_quit(QTestState *s) =20 static void socket_send(int fd, const char *buf, size_t size) { - size_t res =3D qemu_write_full(fd, buf, size); + ssize_t res =3D qemu_send_full(fd, buf, size); =20 assert(res =3D=3D size); } @@ -468,7 +468,7 @@ static GString *qtest_client_socket_recv_line(QTestStat= e *s) ssize_t len; char buffer[1024]; =20 - len =3D read(s->fd, buffer, sizeof(buffer)); + len =3D recv(s->fd, buffer, sizeof(buffer), 0); if (len =3D=3D -1 && errno =3D=3D EINTR) { continue; } diff --git a/util/osdep.c b/util/osdep.c index 60fcbbaebe..0342e754e1 100644 --- a/util/osdep.c +++ b/util/osdep.c @@ -502,6 +502,39 @@ int qemu_accept(int s, struct sockaddr *addr, socklen_= t *addrlen) return ret; } =20 +/* + * A variant of send(2) which handles partial send. + * + * Return the number of bytes transferred over the socket. + * Set errno if fewer than `count' bytes are sent. + * + * This function don't work with non-blocking socket's. + * Any of the possibilities with non-blocking socket's is bad: + * - return a short write (then name is wrong) + * - busy wait adding (errno =3D=3D EAGAIN) to the loop + */ +ssize_t qemu_send_full(int s, const void *buf, size_t count) +{ + ssize_t ret =3D 0; + ssize_t total =3D 0; + + while (count) { + ret =3D send(s, buf, count, 0); + if (ret < 0) { + if (errno =3D=3D EINTR) { + continue; + } + break; + } + + count -=3D ret; + buf +=3D ret; + total +=3D ret; + } + + return total; +} + void qemu_set_hw_version(const char *version) { hw_version =3D version; --=20 2.34.1