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cbab4face5
Exec transport backend for 'migrate'/'migrate-incoming' QAPIs accept new wire protocol of MigrateAddress struct. It is achived by parsing 'uri' string and storing migration parameters required for exec connection into strList struct. Suggested-by: Aravind Retnakaran <aravind.retnakaran@nutanix.com> Signed-off-by: Het Gala <het.gala@nutanix.com> Signed-off-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Message-ID: <20231023182053.8711-8-farosas@suse.de>
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/*
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* QEMU live migration
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*
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* Copyright IBM, Corp. 2008
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* Copyright Dell MessageOne 2008
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* Copyright Red Hat, Inc. 2015-2016
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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* Charles Duffy <charles_duffy@messageone.com>
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* Daniel P. Berrange <berrange@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "qemu/osdep.h"
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#include "qemu/error-report.h"
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#include "channel.h"
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#include "exec.h"
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#include "migration.h"
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#include "io/channel-command.h"
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#include "trace.h"
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#include "qemu/cutils.h"
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#ifdef WIN32
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const char *exec_get_cmd_path(void)
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{
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g_autofree char *detected_path = g_new(char, MAX_PATH);
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if (GetSystemDirectoryA(detected_path, MAX_PATH) == 0) {
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warn_report("Could not detect cmd.exe path, using default.");
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return "C:\\Windows\\System32\\cmd.exe";
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}
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pstrcat(detected_path, MAX_PATH, "\\cmd.exe");
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return g_steal_pointer(&detected_path);
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}
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#endif
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/* provides the length of strList */
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static int
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str_list_length(strList *list)
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{
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int len = 0;
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strList *elem;
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for (elem = list; elem != NULL; elem = elem->next) {
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len++;
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}
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return len;
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}
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static void
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init_exec_array(strList *command, char **argv, Error **errp)
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{
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int i = 0;
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strList *lst;
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for (lst = command; lst; lst = lst->next) {
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argv[i++] = lst->value;
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}
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argv[i] = NULL;
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return;
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}
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void exec_start_outgoing_migration(MigrationState *s, strList *command,
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Error **errp)
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{
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QIOChannel *ioc;
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int length = str_list_length(command);
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g_auto(GStrv) argv = (char **) g_new0(const char *, length + 1);
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init_exec_array(command, argv, errp);
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g_autofree char *new_command = g_strjoinv(" ", (char **)argv);
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trace_migration_exec_outgoing(new_command);
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ioc = QIO_CHANNEL(
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qio_channel_command_new_spawn(
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(const char * const *) g_steal_pointer(&argv),
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O_RDWR,
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errp));
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if (!ioc) {
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return;
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}
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qio_channel_set_name(ioc, "migration-exec-outgoing");
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migration_channel_connect(s, ioc, NULL, NULL);
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object_unref(OBJECT(ioc));
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}
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static gboolean exec_accept_incoming_migration(QIOChannel *ioc,
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GIOCondition condition,
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gpointer opaque)
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{
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migration_channel_process_incoming(ioc);
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object_unref(OBJECT(ioc));
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return G_SOURCE_REMOVE;
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}
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void exec_start_incoming_migration(strList *command, Error **errp)
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{
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QIOChannel *ioc;
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int length = str_list_length(command);
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g_auto(GStrv) argv = (char **) g_new0(const char *, length + 1);
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init_exec_array(command, argv, errp);
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g_autofree char *new_command = g_strjoinv(" ", (char **)argv);
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trace_migration_exec_incoming(new_command);
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ioc = QIO_CHANNEL(
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qio_channel_command_new_spawn(
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(const char * const *) g_steal_pointer(&argv),
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O_RDWR,
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errp));
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if (!ioc) {
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return;
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}
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qio_channel_set_name(ioc, "migration-exec-incoming");
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qio_channel_add_watch_full(ioc, G_IO_IN,
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exec_accept_incoming_migration,
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NULL, NULL,
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g_main_context_get_thread_default());
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}
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