From patchwork Thu Feb 24 07:28:28 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshiaki Tamura X-Patchwork-Id: 586721 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p1O7gpLZ019593 for ; Thu, 24 Feb 2011 07:42:52 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754169Ab1BXHms (ORCPT ); Thu, 24 Feb 2011 02:42:48 -0500 Received: from sh.osrg.net ([192.16.179.4]:49886 "EHLO sh.osrg.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752726Ab1BXHms (ORCPT ); Thu, 24 Feb 2011 02:42:48 -0500 Received: from fs.osrg.net (postfix@fs.osrg.net [10.0.0.12]) by sh.osrg.net (8.14.3/8.14.3/OSRG-NET) with ESMTP id p1O7bgHd026637; Thu, 24 Feb 2011 16:37:43 +0900 Received: from localhost (hype-nh0.osrg.net [10.72.1.48]) by fs.osrg.net (Postfix) with ESMTP id 11E373E02EB; Thu, 24 Feb 2011 16:37:42 +0900 (JST) From: Yoshiaki Tamura To: kvm@vger.kernel.org, qemu-devel@nongnu.org Cc: avi@redhat.com, anthony@codemonkey.ws, aliguori@us.ibm.com, mtosatti@redhat.com, dlaor@redhat.com, mst@redhat.com, kwolf@redhat.com, pbonzini@redhat.com, quintela@redhat.com, ananth@in.ibm.com, psuriset@linux.vnet.ibm.com, vatsa@linux.vnet.ibm.com, stefanha@linux.vnet.ibm.com, blauwirbel@gmail.com, ohmura.kei@lab.ntt.co.jp, Yoshiaki Tamura Subject: [PATCH 02/18] Introduce read() to FdMigrationState. Date: Thu, 24 Feb 2011 16:28:28 +0900 Message-Id: <1298532524-1286-3-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> X-Mailer: git-send-email 1.7.1.2 In-Reply-To: <1298532524-1286-1-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> References: <1298532524-1286-1-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> X-Dispatcher: imput version 20070423(IM149) Lines: 92 X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Thu, 24 Feb 2011 07:42:52 +0000 (UTC) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (sh.osrg.net [192.16.179.4]); Thu, 24 Feb 2011 16:37:46 +0900 (JST) X-Virus-Scanned: clamav-milter 0.96.5 at sh X-Virus-Status: Clean Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org diff --git a/migration-tcp.c b/migration-tcp.c index b55f419..55777c8 100644 --- a/migration-tcp.c +++ b/migration-tcp.c @@ -39,6 +39,20 @@ static int socket_write(FdMigrationState *s, const void * buf, size_t size) return send(s->fd, buf, size, 0); } +static int socket_read(FdMigrationState *s, const void * buf, size_t size) +{ + ssize_t len; + + do { + len = recv(s->fd, (void *)buf, size, 0); + } while (len == -1 && socket_error() == EINTR); + if (len == -1) { + len = -socket_error(); + } + + return len; +} + static int tcp_close(FdMigrationState *s) { DPRINTF("tcp_close\n"); @@ -94,6 +108,7 @@ MigrationState *tcp_start_outgoing_migration(Monitor *mon, s->get_error = socket_errno; s->write = socket_write; + s->read = socket_read; s->close = tcp_close; s->mig_state.cancel = migrate_fd_cancel; s->mig_state.get_status = migrate_fd_get_status; diff --git a/migration.c b/migration.c index af3a1f2..302b8fe 100644 --- a/migration.c +++ b/migration.c @@ -340,6 +340,19 @@ ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size) return ret; } +int migrate_fd_get_buffer(void *opaque, uint8_t *data, int64_t pos, size_t size) +{ + FdMigrationState *s = opaque; + int ret; + + ret = s->read(s, data, size); + if (ret == -1) { + ret = -(s->get_error(s)); + } + + return ret; +} + void migrate_fd_connect(FdMigrationState *s) { int ret; diff --git a/migration.h b/migration.h index 2170792..88a6987 100644 --- a/migration.h +++ b/migration.h @@ -48,6 +48,7 @@ struct FdMigrationState int (*get_error)(struct FdMigrationState*); int (*close)(struct FdMigrationState*); int (*write)(struct FdMigrationState*, const void *, size_t); + int (*read)(struct FdMigrationState *, const void *, size_t); void *opaque; }; @@ -116,6 +117,8 @@ void migrate_fd_put_notify(void *opaque); ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size); +int migrate_fd_get_buffer(void *opaque, uint8_t *data, int64_t pos, size_t size); + void migrate_fd_connect(FdMigrationState *s); void migrate_fd_put_ready(void *opaque);