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X-Received-From: 134.134.136.126 Subject: [Qemu-devel] [PATCH 4/4] migration/savevm: wrap into qemu_loadvm_state_header() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Wei Yang , dgilbert@redhat.com, quintela@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" On source side, we have qemu_savevm_state_header() to send related data, while on the receiving side those steps are scattered in qemu_loadvm_state(). This patch wrap those related steps into qemu_loadvm_state_header() to make it friendly to read. Signed-off-by: Wei Yang Reviewed-by: Daniel Henrique Barboza --- migration/savevm.c | 69 +++++++++++++++++++++++++++------------------- 1 file changed, 40 insertions(+), 29 deletions(-) diff --git a/migration/savevm.c b/migration/savevm.c index a80ae83663..64d23682c6 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2256,6 +2256,43 @@ qemu_loadvm_section_part_end(QEMUFile *f, MigrationI= ncomingState *mis) return 0; } =20 +static int qemu_loadvm_state_header(QEMUFile *f) +{ + unsigned int v; + int ret; + + v =3D qemu_get_be32(f); + if (v !=3D QEMU_VM_FILE_MAGIC) { + error_report("Not a migration stream"); + return -EINVAL; + } + + v =3D qemu_get_be32(f); + if (v =3D=3D QEMU_VM_FILE_VERSION_COMPAT) { + error_report("SaveVM v2 format is obsolete and don't work anymore"= ); + return -ENOTSUP; + } + if (v !=3D QEMU_VM_FILE_VERSION) { + error_report("Unsupported migration stream version"); + return -ENOTSUP; + } + + if (migrate_get_current()->send_configuration) { + if (qemu_get_byte(f) !=3D QEMU_VM_CONFIGURATION) { + error_report("Configuration section missing"); + qemu_loadvm_state_cleanup(); + return -EINVAL; + } + ret =3D vmstate_load_state(f, &vmstate_configuration, &savevm_stat= e, 0); + + if (ret) { + qemu_loadvm_state_cleanup(); + return ret; + } + } + return 0; +} + static int qemu_loadvm_state_setup(QEMUFile *f) { SaveStateEntry *se; @@ -2403,7 +2440,6 @@ int qemu_loadvm_state(QEMUFile *f) { MigrationIncomingState *mis =3D migration_incoming_get_current(); Error *local_err =3D NULL; - unsigned int v; int ret; =20 if (migration_is_blocked(&local_err)) { @@ -2411,34 +2447,9 @@ int qemu_loadvm_state(QEMUFile *f) return -EINVAL; } =20 - v =3D qemu_get_be32(f); - if (v !=3D QEMU_VM_FILE_MAGIC) { - error_report("Not a migration stream"); - return -EINVAL; - } - - v =3D qemu_get_be32(f); - if (v =3D=3D QEMU_VM_FILE_VERSION_COMPAT) { - error_report("SaveVM v2 format is obsolete and don't work anymore"= ); - return -ENOTSUP; - } - if (v !=3D QEMU_VM_FILE_VERSION) { - error_report("Unsupported migration stream version"); - return -ENOTSUP; - } - - if (migrate_get_current()->send_configuration) { - if (qemu_get_byte(f) !=3D QEMU_VM_CONFIGURATION) { - error_report("Configuration section missing"); - qemu_loadvm_state_cleanup(); - return -EINVAL; - } - ret =3D vmstate_load_state(f, &vmstate_configuration, &savevm_stat= e, 0); - - if (ret) { - qemu_loadvm_state_cleanup(); - return ret; - } + ret =3D qemu_loadvm_state_header(f); + if (ret) { + return ret; } =20 if (qemu_loadvm_state_setup(f) !=3D 0) { --=20 2.19.1