[libvirt] [PATCH 05/15] Move veth device management into virLXCControllerPtr object
Daniel P. Berrange
berrange at redhat.com
Tue Jul 3 15:58:44 UTC 2012
From: "Daniel P. Berrange" <berrange at redhat.com>
Move the veth device name state into the virLXCControllerPtr
object and stop passing it around. Also use size_t instead
of unsigned int for the array length parameters.
Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
---
src/lxc/lxc_container.c | 10 +++---
src/lxc/lxc_container.h | 2 +-
src/lxc/lxc_controller.c | 79 ++++++++++++++++++++++++++++++----------------
3 files changed, 57 insertions(+), 34 deletions(-)
diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
index 910e82b..4f8703c 100644
--- a/src/lxc/lxc_container.c
+++ b/src/lxc/lxc_container.c
@@ -93,7 +93,7 @@ typedef struct __lxc_child_argv lxc_child_argv_t;
struct __lxc_child_argv {
virDomainDefPtr config;
virSecurityManagerPtr securityDriver;
- unsigned int nveths;
+ size_t nveths;
char **veths;
int monitor;
char **ttyPaths;
@@ -262,15 +262,15 @@ int lxcContainerWaitForContinue(int control)
* Returns 0 on success or nonzero in case of error
*/
static int lxcContainerRenameAndEnableInterfaces(bool privNet,
- unsigned int nveths,
+ size_t nveths,
char **veths)
{
int rc = 0;
- unsigned int i;
+ size_t i;
char *newname = NULL;
for (i = 0 ; i < nveths ; i++) {
- if (virAsprintf(&newname, "eth%d", i) < 0) {
+ if (virAsprintf(&newname, "eth%zu", i) < 0) {
virReportOOMError();
rc = -1;
goto error_out;
@@ -1775,7 +1775,7 @@ const char *lxcContainerGetAlt32bitArch(const char *arch)
*/
int lxcContainerStart(virDomainDefPtr def,
virSecurityManagerPtr securityDriver,
- unsigned int nveths,
+ size_t nveths,
char **veths,
int control,
int handshakefd,
diff --git a/src/lxc/lxc_container.h b/src/lxc/lxc_container.h
index 77fb9b2..6f1cc8b 100644
--- a/src/lxc/lxc_container.h
+++ b/src/lxc/lxc_container.h
@@ -51,7 +51,7 @@ int lxcContainerWaitForContinue(int control);
int lxcContainerStart(virDomainDefPtr def,
virSecurityManagerPtr securityDriver,
- unsigned int nveths,
+ size_t nveths,
char **veths,
int control,
int handshakefd,
diff --git a/src/lxc/lxc_controller.c b/src/lxc/lxc_controller.c
index 7447f6c..ad11307 100644
--- a/src/lxc/lxc_controller.c
+++ b/src/lxc/lxc_controller.c
@@ -85,6 +85,9 @@ typedef virLXCController *virLXCControllerPtr;
struct _virLXCController {
char *name;
virDomainDefPtr def;
+
+ size_t nveths;
+ char **veths;
};
static void virLXCControllerFree(virLXCControllerPtr ctrl);
@@ -129,15 +132,35 @@ no_memory:
static void virLXCControllerFree(virLXCControllerPtr ctrl)
{
+ size_t i;
+
if (!ctrl)
return;
+ for (i = 0 ; i < ctrl->nveths ; i++)
+ VIR_FREE(ctrl->veths[i]);
+ VIR_FREE(ctrl->veths);
+
virDomainDefFree(ctrl->def);
VIR_FREE(ctrl->name);
VIR_FREE(ctrl);
}
+
+static int virLXCControllerValidateNICs(virLXCControllerPtr ctrl)
+{
+ if (ctrl->def->nnets != ctrl->nveths) {
+ lxcError(VIR_ERR_INTERNAL_ERROR,
+ _("expecting %d veths, but got %zu"),
+ ctrl->def->nnets, ctrl->nveths);
+ return -1;
+ }
+
+ return 0;
+}
+
+
static int lxcGetLoopFD(char **dev_name)
{
int fd = -1;
@@ -1307,7 +1330,7 @@ cleanup2:
/**
- * lxcControllerMoveInterfaces
+ * virLXCControllerMoveInterfaces
* @nveths: number of interfaces
* @veths: interface names
* @container: pid of container
@@ -1316,13 +1339,13 @@ cleanup2:
*
* Returns 0 on success or -1 in case of error
*/
-static int lxcControllerMoveInterfaces(unsigned int nveths,
- char **veths,
- pid_t container)
+static int virLXCControllerMoveInterfaces(virLXCControllerPtr ctrl,
+ pid_t container)
{
- unsigned int i;
- for (i = 0 ; i < nveths ; i++)
- if (virNetDevSetNamespace(veths[i], container) < 0)
+ size_t i;
+
+ for (i = 0 ; i < ctrl->nveths ; i++)
+ if (virNetDevSetNamespace(ctrl->veths[i], container) < 0)
return -1;
return 0;
@@ -1330,24 +1353,26 @@ static int lxcControllerMoveInterfaces(unsigned int nveths,
/**
- * lxcCleanupInterfaces:
- * @nveths: number of interfaces
- * @veths: interface names
+ * virLXCControllerDeleteInterfaces:
+ * @ctrl: the LXC controller
*
* Cleans up the container interfaces by deleting the veth device pairs.
*
* Returns 0 on success or -1 in case of error
*/
-static int lxcControllerCleanupInterfaces(unsigned int nveths,
- char **veths)
+static int virLXCControllerDeleteInterfaces(virLXCControllerPtr ctrl)
{
- unsigned int i;
- for (i = 0 ; i < nveths ; i++)
- ignore_value(virNetDevVethDelete(veths[i]));
+ size_t i;
+ int ret = 0;
- return 0;
+ for (i = 0 ; i < ctrl->nveths ; i++)
+ if (virNetDevVethDelete(ctrl->veths[i]) < 0)
+ ret = -1;
+
+ return ret;
}
+
static int lxcSetPersonality(virDomainDefPtr def)
{
struct utsname utsname;
@@ -1422,8 +1447,6 @@ cleanup:
static int
virLXCControllerRun(virLXCControllerPtr ctrl,
virSecurityManagerPtr securityDriver,
- unsigned int nveths,
- char **veths,
int monitor,
int client,
int *ttyFDs,
@@ -1588,8 +1611,8 @@ virLXCControllerRun(virLXCControllerPtr ctrl,
if ((container = lxcContainerStart(ctrl->def,
securityDriver,
- nveths,
- veths,
+ ctrl->nveths,
+ ctrl->veths,
control[1],
containerhandshake[1],
containerTtyPaths,
@@ -1598,7 +1621,7 @@ virLXCControllerRun(virLXCControllerPtr ctrl,
VIR_FORCE_CLOSE(control[1]);
VIR_FORCE_CLOSE(containerhandshake[1]);
- if (lxcControllerMoveInterfaces(nveths, veths, container) < 0)
+ if (virLXCControllerMoveInterfaces(ctrl, container) < 0)
goto cleanup;
if (lxcContainerSendContinue(control[0]) < 0) {
@@ -1684,7 +1707,7 @@ int main(int argc, char *argv[])
int rc = 1;
int client;
char *name = NULL;
- int nveths = 0;
+ size_t nveths = 0;
char **veths = NULL;
int monitor = -1;
int handshakefd = -1;
@@ -1833,11 +1856,11 @@ int main(int argc, char *argv[])
NULLSTR(ctrl->def->seclabel.label),
NULLSTR(ctrl->def->seclabel.imagelabel));
- if (ctrl->def->nnets != nveths) {
- fprintf(stderr, "%s: expecting %d veths, but got %d\n",
- argv[0], ctrl->def->nnets, nveths);
+ ctrl->veths = veths;
+ ctrl->nveths = nveths;
+
+ if (virLXCControllerValidateNICs(ctrl) < 0)
goto cleanup;
- }
if ((sockpath = lxcMonitorPath(ctrl)) == NULL)
goto cleanup;
@@ -1885,12 +1908,12 @@ int main(int argc, char *argv[])
}
rc = virLXCControllerRun(ctrl, securityDriver,
- nveths, veths, monitor, client,
+ monitor, client,
ttyFDs, nttyFDs, handshakefd);
cleanup:
virPidFileDelete(LXC_STATE_DIR, name);
- lxcControllerCleanupInterfaces(nveths, veths);
+ virLXCControllerDeleteInterfaces(ctrl);
if (sockpath)
unlink(sockpath);
VIR_FREE(sockpath);
--
1.7.10.4
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