vmxnet3: Use common MAC address tracing macros
[qemu.git] / migration / exec.c
1 /*
2 * QEMU live migration
3 *
4 * Copyright IBM, Corp. 2008
5 * Copyright Dell MessageOne 2008
6 *
7 * Authors:
8 * Anthony Liguori <aliguori@us.ibm.com>
9 * Charles Duffy <charles_duffy@messageone.com>
10 *
11 * This work is licensed under the terms of the GNU GPL, version 2. See
12 * the COPYING file in the top-level directory.
13 *
14 * Contributions after 2012-01-13 are licensed under the terms of the
15 * GNU GPL, version 2 or (at your option) any later version.
16 */
17
18 #include "qemu/osdep.h"
19 #include "qapi/error.h"
20 #include "qemu-common.h"
21 #include "qemu/sockets.h"
22 #include "qemu/main-loop.h"
23 #include "migration/migration.h"
24 #include "migration/qemu-file.h"
25 #include "block/block.h"
26 #include <sys/wait.h>
27
28 //#define DEBUG_MIGRATION_EXEC
29
30 #ifdef DEBUG_MIGRATION_EXEC
31 #define DPRINTF(fmt, ...) \
32 do { printf("migration-exec: " fmt, ## __VA_ARGS__); } while (0)
33 #else
34 #define DPRINTF(fmt, ...) \
35 do { } while (0)
36 #endif
37
38 void exec_start_outgoing_migration(MigrationState *s, const char *command, Error **errp)
39 {
40 s->to_dst_file = qemu_popen_cmd(command, "w");
41 if (s->to_dst_file == NULL) {
42 error_setg_errno(errp, errno, "failed to popen the migration target");
43 return;
44 }
45
46 migrate_fd_connect(s);
47 }
48
49 static void exec_accept_incoming_migration(void *opaque)
50 {
51 QEMUFile *f = opaque;
52
53 qemu_set_fd_handler(qemu_get_fd(f), NULL, NULL, NULL);
54 process_incoming_migration(f);
55 }
56
57 void exec_start_incoming_migration(const char *command, Error **errp)
58 {
59 QEMUFile *f;
60
61 DPRINTF("Attempting to start an incoming migration\n");
62 f = qemu_popen_cmd(command, "r");
63 if(f == NULL) {
64 error_setg_errno(errp, errno, "failed to popen the migration source");
65 return;
66 }
67
68 qemu_set_fd_handler(qemu_get_fd(f), exec_accept_incoming_migration, NULL,
69 f);
70 }