From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45476) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aIxNZ-0001bS-Gm for qemu-devel@nongnu.org; Tue, 12 Jan 2016 06:44:50 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aIxNW-0004Bv-IF for qemu-devel@nongnu.org; Tue, 12 Jan 2016 06:44:49 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45071) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aIxNW-0004B2-Bh for qemu-devel@nongnu.org; Tue, 12 Jan 2016 06:44:46 -0500 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id D09DF6E799 for ; Tue, 12 Jan 2016 11:44:43 +0000 (UTC) From: "Daniel P. Berrange" Date: Tue, 12 Jan 2016 11:44:05 +0000 Message-Id: <1452599056-27357-12-git-send-email-berrange@redhat.com> In-Reply-To: <1452599056-27357-1-git-send-email-berrange@redhat.com> References: <1452599056-27357-1-git-send-email-berrange@redhat.com> Subject: [Qemu-devel] [PATCH v1 11/22] migration: convert fd socket protocol to use QIOChannel List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Amit Shah , "Dr. David Alan Gilbert" , Juan Quintela Convert the fd socket migration protocol driver to use QIOChannel and QEMUFileChannel, instead of plain sockets APIs. It can be unconditionally built because the QIOChannel APIs it uses will take care to report suitable error messages if needed. Signed-off-by: Daniel P. Berrange --- migration/Makefile.objs | 4 ++-- migration/fd.c | 57 ++++++++++++++++++++++++++++++++----------------- migration/migration.c | 4 ---- 3 files changed, 39 insertions(+), 26 deletions(-) diff --git a/migration/Makefile.objs b/migration/Makefile.objs index a5f8a03..64f95cd 100644 --- a/migration/Makefile.objs +++ b/migration/Makefile.objs @@ -1,11 +1,11 @@ -common-obj-y += migration.o tcp.o unix.o +common-obj-y += migration.o tcp.o unix.o fd.o common-obj-y += vmstate.o common-obj-y += qemu-file.o qemu-file-buf.o qemu-file-unix.o qemu-file-stdio.o common-obj-y += qemu-file-channel.o common-obj-y += xbzrle.o postcopy-ram.o common-obj-$(CONFIG_RDMA) += rdma.o -common-obj-$(CONFIG_POSIX) += exec.o fd.o +common-obj-$(CONFIG_POSIX) += exec.o common-obj-y += block.o diff --git a/migration/fd.c b/migration/fd.c index 3e4bed0..8d48e0d 100644 --- a/migration/fd.c +++ b/migration/fd.c @@ -20,6 +20,8 @@ #include "monitor/monitor.h" #include "migration/qemu-file.h" #include "block/block.h" +#include "io/channel-file.h" +#include "io/channel-socket.h" //#define DEBUG_MIGRATION_FD @@ -33,56 +35,71 @@ static bool fd_is_socket(int fd) { - struct stat stat; - int ret = fstat(fd, &stat); - if (ret == -1) { - /* When in doubt say no */ - return false; - } - return S_ISSOCK(stat.st_mode); + int optval; + socklen_t optlen; + optlen = sizeof(optval); + return getsockopt(fd, + SOL_SOCKET, + SO_TYPE, + (char *)&optval, + &optlen) == 0; } void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp) { + QIOChannel *ioc; int fd = monitor_get_fd(cur_mon, fdname, errp); if (fd == -1) { return; } if (fd_is_socket(fd)) { - s->file = qemu_fopen_socket(fd, "wb"); + ioc = QIO_CHANNEL(qio_channel_socket_new_fd(fd, errp)); + if (!ioc) { + close(fd); + return; + } } else { - s->file = qemu_fdopen(fd, "wb"); + ioc = QIO_CHANNEL(qio_channel_file_new_fd(fd)); } + s->file = qemu_fopen_channel_output(ioc); migrate_fd_connect(s); } -static void fd_accept_incoming_migration(void *opaque) +static gboolean fd_accept_incoming_migration(QIOChannel *ioc, + GIOCondition condition, + gpointer opaque) { QEMUFile *f = opaque; - - qemu_set_fd_handler(qemu_get_fd(f), NULL, NULL, NULL); process_incoming_migration(f); + return FALSE; } void fd_start_incoming_migration(const char *infd, Error **errp) { - int fd; QEMUFile *f; + QIOChannel *ioc; + int fd; DPRINTF("Attempting to start an incoming migration via fd\n"); fd = strtol(infd, NULL, 0); if (fd_is_socket(fd)) { - f = qemu_fopen_socket(fd, "rb"); + ioc = QIO_CHANNEL(qio_channel_socket_new_fd(fd, errp)); + if (!ioc) { + close(fd); + return; + } } else { - f = qemu_fdopen(fd, "rb"); - } - if(f == NULL) { - error_setg_errno(errp, errno, "failed to open the source descriptor"); - return; + ioc = QIO_CHANNEL(qio_channel_file_new_fd(fd)); } + f = qemu_fopen_channel_input(ioc); + object_unref(OBJECT(ioc)); - qemu_set_fd_handler(fd, fd_accept_incoming_migration, NULL, f); + qio_channel_add_watch(ioc, + G_IO_IN, + fd_accept_incoming_migration, + f, + NULL); } diff --git a/migration/migration.c b/migration/migration.c index 1c5f12e..211879e 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -315,10 +315,8 @@ void qemu_start_incoming_migration(const char *uri, Error **errp) #endif } else if (strstart(uri, "unix:", &p)) { unix_start_incoming_migration(p, errp); -#if !defined(WIN32) } else if (strstart(uri, "fd:", &p)) { fd_start_incoming_migration(p, errp); -#endif } else { error_setg(errp, "unknown migration protocol: %s", uri); } @@ -1022,10 +1020,8 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk, #endif } else if (strstart(uri, "unix:", &p)) { unix_start_outgoing_migration(s, p, &local_err); -#if !defined(WIN32) } else if (strstart(uri, "fd:", &p)) { fd_start_outgoing_migration(s, p, &local_err); -#endif } else { error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "uri", "a valid migration protocol"); -- 2.5.0