4 * Copyright IBM, Corp. 2008
5 * Copyright Dell MessageOne 2008
8 * Anthony Liguori <aliguori@us.ibm.com>
9 * Charles Duffy <charles_duffy@messageone.com>
11 * This work is licensed under the terms of the GNU GPL, version 2. See
12 * the COPYING file in the top-level directory.
16 #include "qemu-common.h"
17 #include "qemu_socket.h"
18 #include "migration.h"
19 #include "qemu-char.h"
20 #include "buffered_file.h"
22 #include <sys/types.h>
25 //#define DEBUG_MIGRATION_EXEC
27 #ifdef DEBUG_MIGRATION_EXEC
28 #define DPRINTF(fmt, ...) \
29 do { printf("migration-exec: " fmt, ## __VA_ARGS__); } while (0)
31 #define DPRINTF(fmt, ...) \
35 static int file_errno(MigrationState
*s
)
40 static int file_write(MigrationState
*s
, const void * buf
, size_t size
)
42 return write(s
->fd
, buf
, size
);
45 static int exec_close(MigrationState
*s
)
48 DPRINTF("exec_close\n");
50 ret
= qemu_fclose(s
->opaque
);
55 && WEXITSTATUS(ret
) == 0) {
64 MigrationState
*exec_start_outgoing_migration(Monitor
*mon
,
66 int64_t bandwidth_limit
,
74 s
= migrate_new(mon
, bandwidth_limit
, detach
, blk
, inc
);
76 f
= popen(command
, "w");
78 DPRINTF("Unable to popen exec target\n");
84 DPRINTF("Unable to retrieve file descriptor for popen'd handle\n");
88 socket_set_nonblock(s
->fd
);
90 s
->opaque
= qemu_popen(f
, "w");
92 s
->close
= exec_close
;
93 s
->get_error
= file_errno
;
94 s
->write
= file_write
;
96 migrate_fd_connect(s
);
106 static void exec_accept_incoming_migration(void *opaque
)
108 QEMUFile
*f
= opaque
;
110 process_incoming_migration(f
);
111 qemu_set_fd_handler2(qemu_stdio_fd(f
), NULL
, NULL
, NULL
, NULL
);
115 int exec_start_incoming_migration(const char *command
)
119 DPRINTF("Attempting to start an incoming migration\n");
120 f
= qemu_popen_cmd(command
, "r");
122 DPRINTF("Unable to apply qemu wrapper to popen file\n");
126 qemu_set_fd_handler2(qemu_stdio_fd(f
), NULL
,
127 exec_accept_incoming_migration
, NULL
, f
);