[libvirt] [PATCH 12/16] Rename ifaceCheck to virNetDevValidateConfig
Daniel P. Berrange
berrange at redhat.com
Tue Nov 15 11:14:25 UTC 2011
From: "Daniel P. Berrange" <berrange at redhat.com>
Rename the ifaceCheck method to virNetDevValidateConfig and change
so that it always raises an error and returns -1 on error.
* src/util/interface.c, src/util/interface.h: Rename ifaceCheck
to virNetDevValidateConfig
* src/nwfilter/nwfilter_gentech_driver.c,
src/nwfilter/nwfilter_learnipaddr.c: Update for API rename
---
src/libvirt_private.syms | 2 +-
src/nwfilter/nwfilter_gentech_driver.c | 6 ++-
src/nwfilter/nwfilter_learnipaddr.c | 6 ++-
src/util/interface.c | 83 ++++++++++++++++---------------
src/util/interface.h | 5 +-
5 files changed, 55 insertions(+), 47 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 13b3d27..761194b 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -575,7 +575,7 @@ virHookPresent;
# interface.h
-ifaceCheck;
+virNetDevValidateConfig;
virNetDevGetIndex;
virNetDevGetIPv4Address;
ifaceGetNthParent;
diff --git a/src/nwfilter/nwfilter_gentech_driver.c b/src/nwfilter/nwfilter_gentech_driver.c
index 9f44aef..9dffdc5 100644
--- a/src/nwfilter/nwfilter_gentech_driver.c
+++ b/src/nwfilter/nwfilter_gentech_driver.c
@@ -715,7 +715,8 @@ virNWFilterInstantiate(virConnectPtr conn,
if (teardownOld && rc == 0)
techdriver->tearOldRules(conn, ifname);
- if (rc == 0 && (ifaceCheck(false, ifname, NULL, ifindex) < 0)) {
+ if (rc == 0 && (virNetDevValidateConfig(ifname, NULL, ifindex) <= 0)) {
+ virResetLastError();
/* interface changed/disppeared */
techdriver->allTeardown(ifname);
rc = 1;
@@ -963,8 +964,9 @@ virNWFilterInstantiateFilterLate(virConnectPtr conn,
&foundNewFilter);
if (rc) {
/* something went wrong... 'DOWN' the interface */
- if ((ifaceCheck(false, ifname, NULL, ifindex) < 0) ||
+ if ((virNetDevValidateConfig(ifname, NULL, ifindex) <= 0) ||
(virNetDevSetOnline(ifname, false) < 0)) {
+ virResetLastError();
/* assuming interface disappeared... */
_virNWFilterTeardownFilter(ifname);
}
diff --git a/src/nwfilter/nwfilter_learnipaddr.c b/src/nwfilter/nwfilter_learnipaddr.c
index 319f317..03716ea 100644
--- a/src/nwfilter/nwfilter_learnipaddr.c
+++ b/src/nwfilter/nwfilter_learnipaddr.c
@@ -434,7 +434,8 @@ learnIPAddressThread(void *arg)
req->status = 0;
/* anything change to the VM's interface -- check at least once */
- if (ifaceCheck(false, req->ifname, NULL, req->ifindex) < 0) {
+ if (virNetDevValidateConfig(req->ifname, NULL, req->ifindex) <= 0) {
+ virResetLastError();
req->status = ENODEV;
goto done;
}
@@ -504,7 +505,8 @@ learnIPAddressThread(void *arg)
}
/* check whether VM's dev is still there */
- if (ifaceCheck(false, req->ifname, NULL, req->ifindex) < 0) {
+ if (virNetDevValidateConfig(req->ifname, NULL, req->ifindex) <= 0) {
+ virResetLastError();
req->status = ENODEV;
showError = false;
break;
diff --git a/src/util/interface.c b/src/util/interface.c
index e86d183..16ad155 100644
--- a/src/util/interface.c
+++ b/src/util/interface.c
@@ -56,9 +56,7 @@
__FUNCTION__, __LINE__, __VA_ARGS__)
/**
- * ifaceCheck
- *
- * @reportError: whether to report errors or keep silent
+ * virNetDevValidateConfig:
* @ifname: Name of the interface
* @macaddr: expected MAC address of the interface; not checked if NULL
* @ifindex: expected index of the interface; not checked if '-1'
@@ -67,78 +65,83 @@
* it must have the given MAC address and if an interface index is
* passed, it must also match the interface index.
*
- * Returns 0 on success, -errno on failure.
- * -ENODEV : if interface with given name does not exist or its interface
- * index is different than the one passed
- * -EINVAL : if interface name is invalid (too long)
+ * Returns 1 if the config matches, 0 if the config does not match, or interface does not exist, -1 on error
*/
#ifdef __linux__
-int
-ifaceCheck(bool reportError, const char *ifname,
- const unsigned char *macaddr, int ifindex)
+int virNetDevValidateConfig(const char *ifname,
+ const unsigned char *macaddr, int ifindex)
{
- struct ifreq ifr;
int fd = -1;
- int rc = 0;
+ int ret = -1;
+ struct ifreq ifr;
int idx;
+ int rc;
+
+ if ((rc = virNetDevExists(ifname)) < 0)
+ return -1;
+ if (rc == 0) {
+ ret = 0;
+ goto cleanup;
+ }
if (macaddr != NULL) {
fd = socket(PF_PACKET, SOCK_DGRAM, 0);
- if (fd < 0)
- return -errno;
+ if (fd < 0) {
+ virReportSystemError(errno, "%s",
+ _("Unable to open control socket"));
+ return -1;
+ }
memset(&ifr, 0, sizeof(ifr));
if (virStrncpy(ifr.ifr_name,
ifname, strlen(ifname), sizeof(ifr.ifr_name)) == NULL) {
- if (reportError)
- ifaceError(VIR_ERR_INTERNAL_ERROR,
- _("invalid interface name %s"),
- ifname);
- rc = -EINVAL;
+ virReportSystemError(ERANGE,
+ _("invalid interface name %s"),
+ ifname);
goto cleanup;
}
if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
- if (reportError)
- ifaceError(VIR_ERR_INTERNAL_ERROR,
- _("coud not get MAC address of interface %s"),
- ifname);
- rc = -errno;
+ if (errno == ENODEV) {
+ ret = 0;
+ goto cleanup;
+ }
+ virReportSystemError(errno,
+ _("coud not get MAC address of interface %s"),
+ ifname);
goto cleanup;
}
if (memcmp(&ifr.ifr_hwaddr.sa_data, macaddr, VIR_MAC_BUFLEN) != 0) {
- rc = -ENODEV;
+ ret = 0;
goto cleanup;
}
}
if (ifindex != -1) {
if (virNetDevGetIndex(ifname, &idx) < 0)
- virResetLastError();
- else if (idx != ifindex)
- rc = -ENODEV;
+ goto cleanup;
+ else if (idx != ifindex) {
+ ret = 0;
+ goto cleanup;
+ }
}
+ ret = 1;
+
cleanup:
VIR_FORCE_CLOSE(fd);
-
- return rc;
+ return ret;
}
-
-#else
-
-int
-ifaceCheck(bool reportError ATTRIBUTE_UNUSED,
- const char *ifname ATTRIBUTE_UNUSED,
- const unsigned char *macaddr ATTRIBUTE_UNUSED,
- int ifindex ATTRIBUTE_UNUSED)
+#else /* ! __linux__ */
+int virNetDevValidateConfig(const char *ifname ATTRIBUTE_UNUSED,
+ const unsigned char *macaddr ATTRIBUTE_UNUSED,
+ int ifindex ATTRIBUTE_UNUSED)
{
return -ENOSYS;
}
-
-#endif /* __linux__ */
+#endif /* ! __linux__ */
diff --git a/src/util/interface.h b/src/util/interface.h
index afe417d..c230264 100644
--- a/src/util/interface.h
+++ b/src/util/interface.h
@@ -30,8 +30,9 @@ struct nlattr;
# define NET_SYSFS "/sys/class/net/"
-int ifaceCheck(bool reportError, const char *ifname,
- const unsigned char *macaddr, int ifindex);
+int virNetDevValidateConfig(const char *ifname,
+ const unsigned char *macaddr, int ifindex)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
int ifaceMacvtapLinkDump(bool nltarget_kernel, const char *ifname, int ifindex,
struct nlattr **tb, unsigned char **recvbuf,
--
1.7.6.4
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