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bh=D8hBw/dg80E+AWtVrRUw//z7bs6ng4YUHz+jcD3CUbA=; b=hW0pjHR4fT+uOAth6XrqjoeiGgJKTMa2CuZOfPF4r+zTRsDfn2UmzFPn61zz2hMTvDcB6t 6tmRn1HDDvFNVsF3xfS484v73s1IixrX0vnQtM4Wo7fa5ciawGBiC26fivw6SAVd/qS1Rn 2JiLK2XnJhBkPOQj+EZ6KO2jUMTgi0U= X-MC-Unique: cdsSW1fmOfSenrIduSz4kQ-1 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , Eric Blake , "Dr. David Alan Gilbert" , Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Jason Wang , Laurent Vivier , Stefano Brivio Subject: [RFC PATCH v3 09/11] net: dgram: add unix socket Date: Mon, 20 Jun 2022 12:18:26 +0200 Message-Id: <20220620101828.518865-10-lvivier@redhat.com> In-Reply-To: <20220620101828.518865-1-lvivier@redhat.com> References: <20220620101828.518865-1-lvivier@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 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=170.10.133.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1655720988147100001 Content-Type: text/plain; charset="utf-8" Signed-off-by: Laurent Vivier Reviewed-by: Stefano Brivio --- net/dgram.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 62 insertions(+), 3 deletions(-) diff --git a/net/dgram.c b/net/dgram.c index c0cf0410792e..9f20bdbc163c 100644 --- a/net/dgram.c +++ b/net/dgram.c @@ -85,8 +85,15 @@ static ssize_t net_dgram_receive_dgram(NetClientState *n= c, =20 do { if (s->dgram_dst) { - ret =3D sendto(s->fd, buf, size, 0, s->dgram_dst, - sizeof(struct sockaddr_in)); + socklen_t len; + + if (s->dgram_dst->sa_family =3D=3D AF_INET) { + len =3D sizeof(struct sockaddr_in); + } else { + len =3D sizeof(struct sockaddr_un); + } + + ret =3D sendto(s->fd, buf, size, 0, s->dgram_dst, len); } else { ret =3D send(s->fd, buf, size, 0); } @@ -508,7 +515,7 @@ static int net_dgram_udp_init(NetClientState *peer, } } else { if (local->type !=3D SOCKET_ADDRESS_TYPE_FD) { - error_setg(errp, "type=3Dinet requires remote parameter"); + error_setg(errp, "type=3Dinet or unix require remote parameter= "); return -1; } } @@ -558,6 +565,58 @@ static int net_dgram_udp_init(NetClientState *peer, =20 break; } + case SOCKET_ADDRESS_TYPE_UNIX: { + struct sockaddr_un laddr_un, raddr_un; + + ret =3D unlink(local->u.q_unix.path); + if (ret < 0 && errno !=3D ENOENT) { + error_setg_errno(errp, errno, "failed to unlink socket %s", + local->u.q_unix.path); + return -1; + } + + laddr_un.sun_family =3D PF_UNIX; + ret =3D snprintf(laddr_un.sun_path, sizeof(laddr_un.sun_path), "%s= ", + local->u.q_unix.path); + if (ret < 0 || ret >=3D sizeof(laddr_un.sun_path)) { + error_setg(errp, "UNIX socket path '%s' is too long", + local->u.q_unix.path); + error_append_hint(errp, "Path must be less than %zu bytes\n", + sizeof(laddr_un.sun_path)); + } + + raddr_un.sun_family =3D PF_UNIX; + ret =3D snprintf(raddr_un.sun_path, sizeof(raddr_un.sun_path), "%s= ", + remote->u.q_unix.path); + if (ret < 0 || ret >=3D sizeof(raddr_un.sun_path)) { + error_setg(errp, "UNIX socket path '%s' is too long", + remote->u.q_unix.path); + error_append_hint(errp, "Path must be less than %zu bytes\n", + sizeof(raddr_un.sun_path)); + } + + fd =3D qemu_socket(PF_UNIX, SOCK_DGRAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create datagram socket"); + return -1; + } + + ret =3D bind(fd, (struct sockaddr *)&laddr_un, sizeof(laddr_un)); + if (ret < 0) { + error_setg_errno(errp, errno, "can't bind unix=3D%s to socket", + laddr_un.sun_path); + closesocket(fd); + return -1; + } + qemu_socket_set_nonblock(fd); + + dgram_dst =3D g_malloc(sizeof(raddr_un)); + memcpy(dgram_dst, &raddr_un, sizeof(raddr_un)); + + info_str =3D g_strdup_printf("udp=3D%s:%s", + laddr_un.sun_path, raddr_un.sun_path); + break; + } case SOCKET_ADDRESS_TYPE_FD: { SocketAddress *sa; SocketAddressType sa_type; --=20 2.36.1