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Remove use of static data in Xen inotify driver

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This commit is contained in:
Daniel P. Berrange 2009-01-20 17:19:23 +00:00
parent 437ac354fc
commit e428a69e6f
4 changed files with 86 additions and 67 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
Tue Jan 20 17:15:53 GMT 2009 Daniel P. Berrange <berrange@redhat.com>
* src/xen_inotify.c, src/xen_unified.h, src/xs_internal.c:
Move statically declared data into xenUnifiedPrivatePtr
struct
Tue Jan 20 16:59:53 GMT 2009 Daniel P. Berrange <berrange@redhat.com>
Make error reporting threadsafe by avoiding strerror()

105
src/xen_inotify.c
View File

@ -48,9 +48,6 @@
__FUNCTION__, __LINE__, fmt)
#define LIBVIRTD_DOMAINS_DIR "/var/lib/xend/domains"
static const char *configDir = NULL;
static int useXenConfigCache = 0;
static xenUnifiedDomainInfoListPtr configInfoList = NULL;
struct xenUnifiedDriver xenInotifyDriver = {
xenInotifyOpen, /* open */
@ -121,6 +118,7 @@ xenInotifyXendDomainsDirLookup(virConnectPtr conn, const char *filename,
virDomainPtr dom;
const char *uuid_str;
unsigned char rawuuid[VIR_UUID_BUFLEN];
xenUnifiedPrivatePtr priv = conn->privateData;
/* xend is managing domains. we will get
* a filename in the manner:
@ -142,15 +140,15 @@ xenInotifyXendDomainsDirLookup(virConnectPtr conn, const char *filename,
/* If we are here, the domain has gone away.
search for, and create a domain from the stored
list info */
for (i=0; i<configInfoList->count; i++) {
if (!memcmp(uuid, configInfoList->doms[i]->uuid, VIR_UUID_BUFLEN)) {
*name = strdup(configInfoList->doms[i]->name);
for (i = 0 ; i < priv->configInfoList->count ; i++) {
if (!memcmp(uuid, priv->configInfoList->doms[i]->uuid, VIR_UUID_BUFLEN)) {
*name = strdup(priv->configInfoList->doms[i]->name);
if (!*name) {
virXenInotifyError(NULL, VIR_ERR_INTERNAL_ERROR,
_("finding dom for %s"), uuid_str);
return -1;
}
memcpy(uuid, configInfoList->doms[i]->uuid, VIR_UUID_BUFLEN);
memcpy(uuid, priv->configInfoList->doms[i]->uuid, VIR_UUID_BUFLEN);
DEBUG0("Found dom on list");
return 0;
}
@ -172,7 +170,8 @@ static int
xenInotifyDomainLookup(virConnectPtr conn,
const char *filename,
char **name, unsigned char *uuid) {
if (useXenConfigCache)
xenUnifiedPrivatePtr priv = conn->privateData;
if (priv->useXenConfigCache)
return xenInotifyXenCacheLookup(filename, name, uuid);
else
return xenInotifyXendDomainsDirLookup(conn, filename, name, uuid);
@ -195,8 +194,9 @@ xenInotifyDomainEventFromFile(virConnectPtr conn,
}
static int
xenInotifyXendDomainsDirRemoveEntry(virConnectPtr conn ATTRIBUTE_UNUSED,
xenInotifyXendDomainsDirRemoveEntry(virConnectPtr conn,
const char *fname) {
xenUnifiedPrivatePtr priv = conn->privateData;
const char *uuidstr = fname + strlen(LIBVIRTD_DOMAINS_DIR) + 1;
unsigned char uuid[VIR_UUID_BUFLEN];
int i;
@ -208,22 +208,22 @@ xenInotifyXendDomainsDirRemoveEntry(virConnectPtr conn ATTRIBUTE_UNUSED,
}
/* match and remove on uuid */
for (i=0; i<configInfoList->count; i++) {
if (!memcmp(uuid, configInfoList->doms[i]->uuid, VIR_UUID_BUFLEN)) {
VIR_FREE(configInfoList->doms[i]->name);
VIR_FREE(configInfoList->doms[i]);
for (i = 0 ; i < priv->configInfoList->count ; i++) {
if (!memcmp(uuid, priv->configInfoList->doms[i]->uuid, VIR_UUID_BUFLEN)) {
VIR_FREE(priv->configInfoList->doms[i]->name);
VIR_FREE(priv->configInfoList->doms[i]);
if (i < (configInfoList->count - 1))
memmove(configInfoList->doms + i,
configInfoList->doms + i + 1,
sizeof(*(configInfoList->doms)) *
(configInfoList->count - (i + 1)));
if (i < (priv->configInfoList->count - 1))
memmove(priv->configInfoList->doms + i,
priv->configInfoList->doms + i + 1,
sizeof(*(priv->configInfoList->doms)) *
(priv->configInfoList->count - (i + 1)));
if (VIR_REALLOC_N(configInfoList->doms,
configInfoList->count - 1) < 0) {
if (VIR_REALLOC_N(priv->configInfoList->doms,
priv->configInfoList->count - 1) < 0) {
; /* Failure to reduce memory allocation isn't fatal */
}
configInfoList->count--;
priv->configInfoList->count--;
return 0;
}
}
@ -235,13 +235,15 @@ xenInotifyXendDomainsDirAddEntry(virConnectPtr conn,
const char *fname) {
char *name = NULL;
unsigned char uuid[VIR_UUID_BUFLEN];
xenUnifiedPrivatePtr priv = conn->privateData;
if (xenInotifyDomainLookup(conn, fname, &name, uuid) < 0) {
virXenInotifyError(NULL, VIR_ERR_INTERNAL_ERROR,
"%s", _("Error looking up domain"));
return -1;
}
if( xenUnifiedAddDomainInfo(configInfoList,
if (xenUnifiedAddDomainInfo(priv->configInfoList,
-1, name, uuid) < 0) {
virXenInotifyError(NULL, VIR_ERR_INTERNAL_ERROR,
"%s", _("Error adding file to config cache"));
@ -255,15 +257,19 @@ xenInotifyXendDomainsDirAddEntry(virConnectPtr conn,
static int
xenInotifyRemoveDomainConfigInfo(virConnectPtr conn,
const char *fname) {
return useXenConfigCache ? xenXMConfigCacheRemoveFile(conn, fname) :
xenInotifyXendDomainsDirRemoveEntry(conn, fname);
xenUnifiedPrivatePtr priv = conn->privateData;
return priv->useXenConfigCache ?
xenXMConfigCacheRemoveFile(conn, fname) :
xenInotifyXendDomainsDirRemoveEntry(conn, fname);
}
static int
xenInotifyAddDomainConfigInfo(virConnectPtr conn,
const char *fname) {
return useXenConfigCache ? xenXMConfigCacheAddFile(conn, fname) :
xenInotifyXendDomainsDirAddEntry(conn, fname);
xenUnifiedPrivatePtr priv = conn->privateData;
return priv->useXenConfigCache ?
xenXMConfigCacheAddFile(conn, fname) :
xenInotifyXendDomainsDirAddEntry(conn, fname);
}
static void
@ -277,7 +283,7 @@ xenInotifyEvent(int watch ATTRIBUTE_UNUSED,
struct inotify_event *e;
int got;
char *tmp, *name;
virConnectPtr conn = (virConnectPtr) data;
virConnectPtr conn = data;
xenUnifiedPrivatePtr priv = NULL;
DEBUG0("got inotify event");
@ -315,7 +321,8 @@ reread:
name = (char *)&(e->name);
snprintf(fname, 1024, "%s/%s", configDir, name);
snprintf(fname, 1024, "%s/%s",
priv->configDir, name);
if (e->mask & (IN_DELETE | IN_MOVED_FROM)) {
virDomainEventPtr event =
@ -378,24 +385,24 @@ xenInotifyOpen(virConnectPtr conn ATTRIBUTE_UNUSED,
if(priv->xendConfigVersion <= 2) {
/* /etc/xen */
configDir = xenXMGetConfigDir();
useXenConfigCache = 1;
priv->configDir = xenXMGetConfigDir();
priv->useXenConfigCache = 1;
} else {
/* /var/lib/xend/domains/<uuid>/config.sxp */
configDir = LIBVIRTD_DOMAINS_DIR;
useXenConfigCache = 0;
priv->configDir = LIBVIRTD_DOMAINS_DIR;
priv->useXenConfigCache = 0;
if ( VIR_ALLOC(configInfoList ) < 0) {
if (VIR_ALLOC(priv->configInfoList) < 0) {
virXenInotifyError(NULL, VIR_ERR_INTERNAL_ERROR,
"%s", _("failed to allocate configInfoList"));
"%s", _("failed to allocate configInfoList"));
return -1;
}
/* populate initial list */
if (!(dh = opendir(configDir))) {
if (!(dh = opendir(priv->configDir))) {
virReportSystemError(NULL, errno,
_("cannot open directory: %s"),
configDir);
priv->configDir);
return -1;
}
while ((ent = readdir(dh))) {
@ -403,9 +410,10 @@ xenInotifyOpen(virConnectPtr conn ATTRIBUTE_UNUSED,
continue;
/* Build the full file path */
if ((strlen(configDir) + 1 + strlen(ent->d_name) + 1) > PATH_MAX)
if ((strlen(priv->configDir) + 1 +
strlen(ent->d_name) + 1) > PATH_MAX)
continue;
strcpy(path, configDir);
strcpy(path, priv->configDir);
strcat(path, "/");
strcat(path, ent->d_name);
@ -419,24 +427,25 @@ xenInotifyOpen(virConnectPtr conn ATTRIBUTE_UNUSED,
}
if ((priv->inotifyFD = inotify_init()) < 0) {
virXenInotifyError(NULL, VIR_ERR_INTERNAL_ERROR,
"%s", _("initializing inotify"));
virReportSystemError(NULL, errno,
"%s", _("initializing inotify"));
return -1;
}
DEBUG("Adding a watch on %s", configDir);
DEBUG("Adding a watch on %s", priv->configDir);
if (inotify_add_watch(priv->inotifyFD,
configDir,
priv->configDir,
IN_CREATE |
IN_CLOSE_WRITE | IN_DELETE |
IN_MOVED_TO | IN_MOVED_FROM) < 0) {
virXenInotifyError(NULL, VIR_ERR_INTERNAL_ERROR,
_("adding watch on %s"), _(configDir));
virReportSystemError(NULL, errno,
_("adding watch on %s"),
priv->configDir);
return -1;
}
DEBUG0("Building initial config cache");
if (useXenConfigCache &&
if (priv->useXenConfigCache &&
xenXMConfigCacheRefresh (conn) < 0) {
DEBUG("Failed to enable XM config cache %s", conn->err.message);
return -1;
@ -464,10 +473,10 @@ xenInotifyOpen(virConnectPtr conn ATTRIBUTE_UNUSED,
int
xenInotifyClose(virConnectPtr conn)
{
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData;
xenUnifiedPrivatePtr priv = conn->privateData;
if(configInfoList)
xenUnifiedDomainInfoListFree(configInfoList);
if (priv->configInfoList)
xenUnifiedDomainInfoListFree(priv->configInfoList);
if (priv->inotifyWatch != -1)
virEventRemoveHandle(priv->inotifyWatch);

7
src/xen_unified.h
View File

@ -156,6 +156,9 @@ struct _xenUnifiedPrivate {
/* A list of xenstore watches */
xenStoreWatchListPtr xsWatchList;
int xsWatch;
/* A list of active domain name/uuids */
xenUnifiedDomainInfoListPtr activeDomainList;
/* An list of callbacks */
virDomainEventCallbackListPtr domainEventCallbacks;
@ -164,6 +167,10 @@ struct _xenUnifiedPrivate {
/* The inotify fd */
int inotifyFD;
int inotifyWatch;
const char *configDir;
int useXenConfigCache ;
xenUnifiedDomainInfoListPtr configInfoList;
#endif
};

35
src/xs_internal.c
View File

@ -46,9 +46,6 @@
#endif
#ifndef PROXY
/* A list of active domain name/uuids */
static xenUnifiedDomainInfoListPtr activeDomainList = NULL;
static char *xenStoreDomainGetOSType(virDomainPtr domain);
struct xenUnifiedDriver xenStoreDriver = {
@ -312,7 +309,7 @@ xenStoreOpen(virConnectPtr conn,
#ifndef PROXY
/* Init activeDomainList */
if ( VIR_ALLOC(activeDomainList) < 0) {
if (VIR_ALLOC(priv->activeDomainList) < 0) {
virXenStoreError(NULL, VIR_ERR_INTERNAL_ERROR,
"%s", _("failed to allocate activeDomainList"));
return -1;
@ -390,8 +387,8 @@ xenStoreClose(virConnectPtr conn)
xenStoreWatchListFree(priv->xsWatchList);
priv->xsWatchList = NULL;
#ifndef PROXY
xenUnifiedDomainInfoListFree(activeDomainList);
activeDomainList = NULL;
xenUnifiedDomainInfoListFree(priv->activeDomainList);
priv->activeDomainList = NULL;
#endif
if (priv->xshandle == NULL)
return(-1);
@ -1190,7 +1187,7 @@ int xenStoreDomainIntroduced(virConnectPtr conn,
int *new_domids;
int nread;
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) opaque;
xenUnifiedPrivatePtr priv = opaque;
retry:
new_domain_cnt = xenStoreNumOfDomains(conn);
@ -1209,8 +1206,8 @@ retry:
missing = 0;
for (i=0 ; i < new_domain_cnt ; i++) {
found = 0;
for (j = 0 ; j < activeDomainList->count ; j++) {
if (activeDomainList->doms[j]->id == new_domids[i]) {
for (j = 0 ; j < priv->activeDomainList->count ; j++) {
if (priv->activeDomainList->doms[j]->id == new_domids[i]) {
found = 1;
break;
}
@ -1238,7 +1235,7 @@ retry:
xenUnifiedDomainEventDispatch(priv, event);
/* Add to the list */
xenUnifiedAddDomainInfo(activeDomainList,
xenUnifiedAddDomainInfo(priv->activeDomainList,
new_domids[i], name, uuid);
VIR_FREE(name);
@ -1267,7 +1264,7 @@ int xenStoreDomainReleased(virConnectPtr conn,
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) opaque;
if(!activeDomainList->count) return 0;
if(!priv->activeDomainList->count) return 0;
retry:
new_domain_cnt = xenStoreNumOfDomains(conn);
@ -1285,10 +1282,10 @@ retry:
}
removed = 0;
for (j=0 ; j < activeDomainList->count ; j++) {
for (j=0 ; j < priv->activeDomainList->count ; j++) {
found = 0;
for (i=0 ; i < new_domain_cnt ; i++) {
if (activeDomainList->doms[j]->id == new_domids[i]) {
if (priv->activeDomainList->doms[j]->id == new_domids[i]) {
found = 1;
break;
}
@ -1297,18 +1294,18 @@ retry:
if (!found) {
virDomainEventPtr event =
virDomainEventNew(-1,
activeDomainList->doms[j]->name,
activeDomainList->doms[j]->uuid,
priv->activeDomainList->doms[j]->name,
priv->activeDomainList->doms[j]->uuid,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN);
if (event)
xenUnifiedDomainEventDispatch(priv, event);
/* Remove from the list */
xenUnifiedRemoveDomainInfo(activeDomainList,
activeDomainList->doms[j]->id,
activeDomainList->doms[j]->name,
activeDomainList->doms[j]->uuid);
xenUnifiedRemoveDomainInfo(priv->activeDomainList,
priv->activeDomainList->doms[j]->id,
priv->activeDomainList->doms[j]->name,
priv->activeDomainList->doms[j]->uuid);
removed = 1;
}