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1 | 5ac1fad3 | Paolo Bonzini | /*
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2 | 5ac1fad3 | Paolo Bonzini | * QEMU live migration via generic fd
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3 | 5ac1fad3 | Paolo Bonzini | *
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4 | 5ac1fad3 | Paolo Bonzini | * Copyright Red Hat, Inc. 2009
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5 | 5ac1fad3 | Paolo Bonzini | *
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6 | 5ac1fad3 | Paolo Bonzini | * Authors:
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7 | 5ac1fad3 | Paolo Bonzini | * Chris Lalancette <clalance@redhat.com>
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8 | 5ac1fad3 | Paolo Bonzini | *
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9 | 5ac1fad3 | Paolo Bonzini | * This work is licensed under the terms of the GNU GPL, version 2. See
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10 | 5ac1fad3 | Paolo Bonzini | * the COPYING file in the top-level directory.
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11 | 5ac1fad3 | Paolo Bonzini | *
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12 | 6b620ca3 | Paolo Bonzini | * Contributions after 2012-01-13 are licensed under the terms of the
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13 | 6b620ca3 | Paolo Bonzini | * GNU GPL, version 2 or (at your option) any later version.
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14 | 5ac1fad3 | Paolo Bonzini | */
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15 | 5ac1fad3 | Paolo Bonzini | |
16 | 5ac1fad3 | Paolo Bonzini | #include "qemu-common.h" |
17 | 6a1751b7 | Alex Bligh | #include "qemu/main-loop.h" |
18 | 1de7afc9 | Paolo Bonzini | #include "qemu/sockets.h" |
19 | caf71f86 | Paolo Bonzini | #include "migration/migration.h" |
20 | 83c9089e | Paolo Bonzini | #include "monitor/monitor.h" |
21 | 557ec5a0 | Juan Quintela | #include "migration/qemu-file.h" |
22 | 737e150e | Paolo Bonzini | #include "block/block.h" |
23 | 5ac1fad3 | Paolo Bonzini | |
24 | 5ac1fad3 | Paolo Bonzini | //#define DEBUG_MIGRATION_FD
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25 | 5ac1fad3 | Paolo Bonzini | |
26 | 5ac1fad3 | Paolo Bonzini | #ifdef DEBUG_MIGRATION_FD
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27 | d0f2c4c6 | malc | #define DPRINTF(fmt, ...) \
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28 | 5ac1fad3 | Paolo Bonzini | do { printf("migration-fd: " fmt, ## __VA_ARGS__); } while (0) |
29 | 5ac1fad3 | Paolo Bonzini | #else
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30 | d0f2c4c6 | malc | #define DPRINTF(fmt, ...) \
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31 | 5ac1fad3 | Paolo Bonzini | do { } while (0) |
32 | 5ac1fad3 | Paolo Bonzini | #endif
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33 | 5ac1fad3 | Paolo Bonzini | |
34 | f37afb5a | Paolo Bonzini | void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp) |
35 | 5ac1fad3 | Paolo Bonzini | { |
36 | f8bbc128 | Paolo Bonzini | int fd = monitor_get_fd(cur_mon, fdname, errp);
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37 | f8bbc128 | Paolo Bonzini | if (fd == -1) { |
38 | f37afb5a | Paolo Bonzini | return;
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39 | 5ac1fad3 | Paolo Bonzini | } |
40 | b352365f | Paolo Bonzini | s->file = qemu_fdopen(fd, "wb");
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41 | 5ac1fad3 | Paolo Bonzini | |
42 | 5ac1fad3 | Paolo Bonzini | migrate_fd_connect(s); |
43 | 5ac1fad3 | Paolo Bonzini | } |
44 | 5ac1fad3 | Paolo Bonzini | |
45 | 5ac1fad3 | Paolo Bonzini | static void fd_accept_incoming_migration(void *opaque) |
46 | 5ac1fad3 | Paolo Bonzini | { |
47 | 5ac1fad3 | Paolo Bonzini | QEMUFile *f = opaque; |
48 | 5ac1fad3 | Paolo Bonzini | |
49 | d263a20b | Paolo Bonzini | qemu_set_fd_handler2(qemu_get_fd(f), NULL, NULL, NULL, NULL); |
50 | a6ef2909 | Paolo Bonzini | process_incoming_migration(f); |
51 | 5ac1fad3 | Paolo Bonzini | } |
52 | 5ac1fad3 | Paolo Bonzini | |
53 | 43eaae28 | Paolo Bonzini | void fd_start_incoming_migration(const char *infd, Error **errp) |
54 | 5ac1fad3 | Paolo Bonzini | { |
55 | 5ac1fad3 | Paolo Bonzini | int fd;
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56 | 5ac1fad3 | Paolo Bonzini | QEMUFile *f; |
57 | 5ac1fad3 | Paolo Bonzini | |
58 | d0f2c4c6 | malc | DPRINTF("Attempting to start an incoming migration via fd\n");
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59 | 5ac1fad3 | Paolo Bonzini | |
60 | 5ac1fad3 | Paolo Bonzini | fd = strtol(infd, NULL, 0); |
61 | 5ac1fad3 | Paolo Bonzini | f = qemu_fdopen(fd, "rb");
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62 | 5ac1fad3 | Paolo Bonzini | if(f == NULL) { |
63 | 43eaae28 | Paolo Bonzini | error_setg_errno(errp, errno, "failed to open the source descriptor");
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64 | 43eaae28 | Paolo Bonzini | return;
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65 | 5ac1fad3 | Paolo Bonzini | } |
66 | 5ac1fad3 | Paolo Bonzini | |
67 | 1c39e2a2 | Juan Quintela | qemu_set_fd_handler2(fd, NULL, fd_accept_incoming_migration, NULL, f); |
68 | 5ac1fad3 | Paolo Bonzini | } |