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Introduce a virLXCControllerPtr object to hold LXC controller state

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The LXC controller code is having to pass around an ever increasing
number of parameters between methods. To make the code more managable
introduce a virLXCControllerPtr to hold all this state, starting with
the container name and virDomainDefPtr object

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2012-07-03 11:54:09 +01:00
parent 284143bbee
commit d624ad6a3d
1 changed files with 89 additions and 42 deletions
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131
src/lxc/lxc_controller.c
View File

@ -80,6 +80,64 @@ struct cgroup_device_policy {
};
typedef struct _virLXCController virLXCController;
typedef virLXCController *virLXCControllerPtr;
struct _virLXCController {
char *name;
virDomainDefPtr def;
};
static void virLXCControllerFree(virLXCControllerPtr ctrl);
static virLXCControllerPtr virLXCControllerNew(const char *name)
{
virLXCControllerPtr ctrl = NULL;
virCapsPtr caps = NULL;
char *configFile = NULL;
if (VIR_ALLOC(ctrl) < 0)
goto no_memory;
if (!(ctrl->name = strdup(name)))
goto no_memory;
if ((caps = lxcCapsInit(NULL)) == NULL)
goto error;
if ((configFile = virDomainConfigFile(LXC_STATE_DIR,
ctrl->name)) == NULL)
goto error;
if ((ctrl->def = virDomainDefParseFile(caps,
configFile,
1 << VIR_DOMAIN_VIRT_LXC,
0)) == NULL)
goto error;
cleanup:
VIR_FREE(configFile);
virCapabilitiesFree(caps);
return ctrl;
no_memory:
virReportOOMError();
error:
virLXCControllerFree(ctrl);
ctrl = NULL;
goto cleanup;
}
static void virLXCControllerFree(virLXCControllerPtr ctrl)
{
if (!ctrl)
return;
virDomainDefFree(ctrl->def);
VIR_FREE(ctrl->name);
VIR_FREE(ctrl);
}
static int lxcGetLoopFD(char **dev_name)
{
int fd = -1;
@ -625,12 +683,12 @@ cleanup:
return rc;
}
static char*lxcMonitorPath(virDomainDefPtr def)
static char*lxcMonitorPath(virLXCControllerPtr ctrl)
{
char *sockpath;
if (virAsprintf(&sockpath, "%s/%s.sock",
LXC_STATE_DIR, def->name) < 0)
LXC_STATE_DIR, ctrl->def->name) < 0)
virReportOOMError();
return sockpath;
}
@ -1362,15 +1420,15 @@ cleanup:
}
static int
lxcControllerRun(virDomainDefPtr def,
virSecurityManagerPtr securityDriver,
unsigned int nveths,
char **veths,
int monitor,
int client,
int *ttyFDs,
size_t nttyFDs,
int handshakefd)
virLXCControllerRun(virLXCControllerPtr ctrl,
virSecurityManagerPtr securityDriver,
unsigned int nveths,
char **veths,
int monitor,
int client,
int *ttyFDs,
size_t nttyFDs,
int handshakefd)
{
int rc = -1;
int control[2] = { -1, -1};
@ -1407,12 +1465,12 @@ lxcControllerRun(virDomainDefPtr def,
goto cleanup;
}
if (lxcSetupLoopDevices(def, &nloopDevs, &loopDevs) < 0)
if (lxcSetupLoopDevices(ctrl->def, &nloopDevs, &loopDevs) < 0)
goto cleanup;
root = virDomainGetRootFilesystem(def);
root = virDomainGetRootFilesystem(ctrl->def);
if (lxcSetContainerResources(def) < 0)
if (lxcSetContainerResources(ctrl->def) < 0)
goto cleanup;
/*
@ -1436,7 +1494,7 @@ lxcControllerRun(virDomainDefPtr def,
* marked as shared
*/
if (root) {
mount_options = virSecurityManagerGetMountOptions(securityDriver, def);
mount_options = virSecurityManagerGetMountOptions(securityDriver, ctrl->def);
char *opts;
VIR_DEBUG("Setting up private /dev/pts");
@ -1525,10 +1583,10 @@ lxcControllerRun(virDomainDefPtr def,
}
}
if (lxcSetPersonality(def) < 0)
if (lxcSetPersonality(ctrl->def) < 0)
goto cleanup;
if ((container = lxcContainerStart(def,
if ((container = lxcContainerStart(ctrl->def,
securityDriver,
nveths,
veths,
@ -1629,9 +1687,6 @@ int main(int argc, char *argv[])
int monitor = -1;
int handshakefd = -1;
int bg = 0;
virCapsPtr caps = NULL;
virDomainDefPtr def = NULL;
char *configFile = NULL;
char *sockpath = NULL;
const struct option options[] = {
{ "background", 0, NULL, 'b' },
@ -1646,6 +1701,7 @@ int main(int argc, char *argv[])
int *ttyFDs = NULL;
size_t nttyFDs = 0;
virSecurityManagerPtr securityDriver = NULL;
virLXCControllerPtr ctrl = NULL;
if (setlocale(LC_ALL, "") == NULL ||
bindtextdomain(PACKAGE, LOCALEDIR) == NULL ||
@ -1766,31 +1822,22 @@ int main(int argc, char *argv[])
virEventRegisterDefaultImpl();
if ((caps = lxcCapsInit(NULL)) == NULL)
goto cleanup;
if ((configFile = virDomainConfigFile(LXC_STATE_DIR,
name)) == NULL)
goto cleanup;
if ((def = virDomainDefParseFile(caps, configFile,
1 << VIR_DOMAIN_VIRT_LXC,
0)) == NULL)
if (!(ctrl = virLXCControllerNew(name)))
goto cleanup;
VIR_DEBUG("Security model %s type %s label %s imagelabel %s",
NULLSTR(def->seclabel.model),
virDomainSeclabelTypeToString(def->seclabel.type),
NULLSTR(def->seclabel.label),
NULLSTR(def->seclabel.imagelabel));
NULLSTR(ctrl->def->seclabel.model),
virDomainSeclabelTypeToString(ctrl->def->seclabel.type),
NULLSTR(ctrl->def->seclabel.label),
NULLSTR(ctrl->def->seclabel.imagelabel));
if (def->nnets != nveths) {
if (ctrl->def->nnets != nveths) {
fprintf(stderr, "%s: expecting %d veths, but got %d\n",
argv[0], def->nnets, nveths);
argv[0], ctrl->def->nnets, nveths);
goto cleanup;
}
if ((sockpath = lxcMonitorPath(def)) == NULL)
if ((sockpath = lxcMonitorPath(ctrl)) == NULL)
goto cleanup;
if ((monitor = lxcMonitorServer(sockpath)) < 0)
@ -1835,17 +1882,17 @@ int main(int argc, char *argv[])
goto cleanup;
}
rc = lxcControllerRun(def, securityDriver,
nveths, veths, monitor, client,
ttyFDs, nttyFDs, handshakefd);
rc = virLXCControllerRun(ctrl, securityDriver,
nveths, veths, monitor, client,
ttyFDs, nttyFDs, handshakefd);
cleanup:
if (def)
virPidFileDelete(LXC_STATE_DIR, def->name);
virPidFileDelete(LXC_STATE_DIR, name);
lxcControllerCleanupInterfaces(nveths, veths);
if (sockpath)
unlink(sockpath);
VIR_FREE(sockpath);
virLXCControllerFree(ctrl);
return rc ? EXIT_FAILURE : EXIT_SUCCESS;
}