dump: Drop redundant check for empty dump
[qemu/armbru.git] / migration / exec.c
blob2bf882bbe12bc3a4a2e2ed1cee4c1281f0a8191a
1 /*
2 * QEMU live migration
4 * Copyright IBM, Corp. 2008
5 * Copyright Dell MessageOne 2008
6 * Copyright Red Hat, Inc. 2015-2016
8 * Authors:
9 * Anthony Liguori <aliguori@us.ibm.com>
10 * Charles Duffy <charles_duffy@messageone.com>
11 * Daniel P. Berrange <berrange@redhat.com>
13 * This work is licensed under the terms of the GNU GPL, version 2. See
14 * the COPYING file in the top-level directory.
16 * Contributions after 2012-01-13 are licensed under the terms of the
17 * GNU GPL, version 2 or (at your option) any later version.
20 #include "qemu/osdep.h"
21 #include "qemu/error-report.h"
22 #include "channel.h"
23 #include "exec.h"
24 #include "migration.h"
25 #include "io/channel-command.h"
26 #include "trace.h"
27 #include "qemu/cutils.h"
29 #ifdef WIN32
30 const char *exec_get_cmd_path(void);
31 const char *exec_get_cmd_path(void)
33 g_autofree char *detected_path = g_new(char, MAX_PATH);
34 if (GetSystemDirectoryA(detected_path, MAX_PATH) == 0) {
35 warn_report("Could not detect cmd.exe path, using default.");
36 return "C:\\Windows\\System32\\cmd.exe";
38 pstrcat(detected_path, MAX_PATH, "\\cmd.exe");
39 return g_steal_pointer(&detected_path);
41 #endif
43 void exec_start_outgoing_migration(MigrationState *s, const char *command, Error **errp)
45 QIOChannel *ioc;
47 #ifdef WIN32
48 const char *argv[] = { exec_get_cmd_path(), "/c", command, NULL };
49 #else
50 const char *argv[] = { "/bin/sh", "-c", command, NULL };
51 #endif
53 trace_migration_exec_outgoing(command);
54 ioc = QIO_CHANNEL(qio_channel_command_new_spawn(argv,
55 O_RDWR,
56 errp));
57 if (!ioc) {
58 return;
61 qio_channel_set_name(ioc, "migration-exec-outgoing");
62 migration_channel_connect(s, ioc, NULL, NULL);
63 object_unref(OBJECT(ioc));
66 static gboolean exec_accept_incoming_migration(QIOChannel *ioc,
67 GIOCondition condition,
68 gpointer opaque)
70 migration_channel_process_incoming(ioc);
71 object_unref(OBJECT(ioc));
72 return G_SOURCE_REMOVE;
75 void exec_start_incoming_migration(const char *command, Error **errp)
77 QIOChannel *ioc;
79 #ifdef WIN32
80 const char *argv[] = { exec_get_cmd_path(), "/c", command, NULL };
81 #else
82 const char *argv[] = { "/bin/sh", "-c", command, NULL };
83 #endif
85 trace_migration_exec_incoming(command);
86 ioc = QIO_CHANNEL(qio_channel_command_new_spawn(argv,
87 O_RDWR,
88 errp));
89 if (!ioc) {
90 return;
93 qio_channel_set_name(ioc, "migration-exec-incoming");
94 qio_channel_add_watch_full(ioc, G_IO_IN,
95 exec_accept_incoming_migration,
96 NULL, NULL,
97 g_main_context_get_thread_default());