82e1cc4bf9
Done with following Coccinelle semantic patch, plus manual cosmetic changes in
net/*.c.
@@
expression E1, E2, E3, E4;
@@
- qemu_set_fd_handler2(E1, NULL, E2, E3, E4);
+ qemu_set_fd_handler(E1, E2, E3, E4);
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1433400324-7358-8-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
/*
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* QEMU live migration via generic fd
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*
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* Copyright Red Hat, Inc. 2009
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*
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* Authors:
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* Chris Lalancette <clalance@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-common.h"
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#include "qemu/main-loop.h"
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#include "qemu/sockets.h"
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#include "migration/migration.h"
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#include "monitor/monitor.h"
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#include "migration/qemu-file.h"
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#include "block/block.h"
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//#define DEBUG_MIGRATION_FD
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#ifdef DEBUG_MIGRATION_FD
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#define DPRINTF(fmt, ...) \
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do { printf("migration-fd: " fmt, ## __VA_ARGS__); } while (0)
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#else
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#define DPRINTF(fmt, ...) \
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do { } while (0)
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#endif
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static bool fd_is_socket(int fd)
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{
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struct stat stat;
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int ret = fstat(fd, &stat);
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if (ret == -1) {
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/* When in doubt say no */
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return false;
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}
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return S_ISSOCK(stat.st_mode);
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}
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void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp)
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{
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int fd = monitor_get_fd(cur_mon, fdname, errp);
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if (fd == -1) {
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return;
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}
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if (fd_is_socket(fd)) {
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s->file = qemu_fopen_socket(fd, "wb");
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} else {
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s->file = qemu_fdopen(fd, "wb");
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}
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migrate_fd_connect(s);
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}
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static void fd_accept_incoming_migration(void *opaque)
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{
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QEMUFile *f = opaque;
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qemu_set_fd_handler(qemu_get_fd(f), NULL, NULL, NULL);
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process_incoming_migration(f);
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}
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void fd_start_incoming_migration(const char *infd, Error **errp)
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{
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int fd;
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QEMUFile *f;
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DPRINTF("Attempting to start an incoming migration via fd\n");
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fd = strtol(infd, NULL, 0);
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if (fd_is_socket(fd)) {
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f = qemu_fopen_socket(fd, "rb");
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} else {
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f = qemu_fdopen(fd, "rb");
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}
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if(f == NULL) {
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error_setg_errno(errp, errno, "failed to open the source descriptor");
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return;
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}
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qemu_set_fd_handler(fd, fd_accept_incoming_migration, NULL, f);
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}
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