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qemu: Introduce virQEMUSaveDataFinish

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The function is supposed to update the save image header after a
successful migration to the save image file.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Jiri Denemark 2017-06-06 22:49:11 +02:00
parent a2d2aae148
commit ec986bc572
1 changed files with 21 additions and 13 deletions
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34
src/qemu/qemu_driver.c
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@ -2877,6 +2877,25 @@ qemuDomainSaveHeader(int fd, const char *path, const char *xml,
}
static int
virQEMUSaveDataFinish(virQEMUSaveHeaderPtr header,
int *fd,
const char *path)
{
memcpy(header->magic, QEMU_SAVE_MAGIC, sizeof(header->magic));
if (safewrite(*fd, header, sizeof(*header)) != sizeof(*header) ||
VIR_CLOSE(*fd) < 0) {
virReportSystemError(errno,
_("failed to write header to domain save file '%s'"),
path);
return -1;
}
return 0;
}
static virCommandPtr
qemuCompressGetCommand(virQEMUSaveFormat compression)
{
@ -3149,21 +3168,10 @@ qemuDomainSaveMemory(virQEMUDriverPtr driver,
if (virFileWrapperFdClose(wrapperFd) < 0)
goto cleanup;
if ((fd = qemuOpenFile(driver, vm, path, O_WRONLY, NULL, NULL)) < 0)
if ((fd = qemuOpenFile(driver, vm, path, O_WRONLY, NULL, NULL)) < 0 ||
virQEMUSaveDataFinish(header, &fd, path) < 0)
goto cleanup;
memcpy(header->magic, QEMU_SAVE_MAGIC, sizeof(header->magic));
if (safewrite(fd, &header, sizeof(header)) != sizeof(header)) {
virReportSystemError(errno, _("unable to write %s"), path);
goto cleanup;
}
if (VIR_CLOSE(fd) < 0) {
virReportSystemError(errno, _("unable to close %s"), path);
goto cleanup;
}
ret = 0;
cleanup: