Use capabilities to allow a driver to register a default <init> if none is specified in the XML. Openvz was already open-coding this to be /sbin/init LXC currently falls over if no init is specified, so an explicit error is an improvement IMO. (Side note: I don't think we can set a default value for LXC. If we use /sbin/init but the user doesn't specify a separate root FS for their guest, the container will rerun the host's init which can be traumatic :). For virt-install I'm thinking of defaulting to /sbin/init if a root FS has been specified, otherwise require the user to manually specify <init>) Signed-off-by: Cole Robinson <crobinso(a)redhat.com&gt; --- src/conf/capabilities.h | 1 + src/conf/domain_conf.c | 12 ++++++++++++ src/openvz/openvz_conf.c | 4 +++- src/openvz/openvz_driver.c | 14 -------------- 4 files changed, 16 insertions(+), 15 deletions(-) diff --git a/src/conf/capabilities.h b/src/conf/capabilities.h index 96bf0a2..e2fa1d6 100644 --- a/src/conf/capabilities.h +++ b/src/conf/capabilities.h @@ -150,6 +150,7 @@ struct _virCaps { int (*privateDataXMLFormat)(virBufferPtr, void *); int (*privateDataXMLParse)(xmlXPathContextPtr, void *); bool hasWideScsiBus; + const char *defaultInitPath; virDomainXMLNamespace ns; }; diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 9ab9a5a..f7e4959 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -5708,6 +5708,18 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps, if (STREQ(def->os.type, "exe")) { def->os.init = virXPathString("string(./os/init[1])", ctxt); + if (!def->os.init) { + if (caps->defaultInitPath) { + def->os.init = strdup(caps->defaultInitPath); + if (!def->os.init) { + goto no_memory; + } + } else { + virDomainReportError(VIR_ERR_XML_ERROR, "%s", + _("init binary must be specified")); + goto error; + } + } } if (STREQ(def->os.type, "xen") || diff --git a/src/openvz/openvz_conf.c b/src/openvz/openvz_conf.c index 88cd4c8..45bc398 100644 --- a/src/openvz/openvz_conf.c +++ b/src/openvz/openvz_conf.c @@ -174,8 +174,10 @@ virCapsPtr openvzCapsInit(void) 0, NULL) == NULL) goto no_memory; - return caps; + caps->defaultInitPath = "/sbin/init"; + + return caps; no_memory: virCapabilitiesFree(caps); return NULL; diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c index 60f2dc2..6af4f75 100644 --- a/src/openvz/openvz_driver.c +++ b/src/openvz/openvz_driver.c @@ -857,13 +857,6 @@ openvzDomainDefineXML(virConnectPtr conn, const char *xml) VIR_DOMAIN_XML_INACTIVE)) == NULL) goto cleanup; - if (vmdef->os.init == NULL) { - if (!(vmdef->os.init = strdup("/sbin/init"))) { - virReportOOMError(); - goto cleanup; - } - } - vm = virDomainFindByName(&driver->domains, vmdef->name); if (vm) { openvzError(VIR_ERR_OPERATION_FAILED, @@ -943,13 +936,6 @@ openvzDomainCreateXML(virConnectPtr conn, const char *xml, VIR_DOMAIN_XML_INACTIVE)) == NULL) goto cleanup; - if (vmdef->os.init == NULL) { - if (!(vmdef->os.init = strdup("/sbin/init"))) { - virReportOOMError(); - goto cleanup; - } - } - vm = virDomainFindByName(&driver->domains, vmdef->name); if (vm) { openvzError(VIR_ERR_OPERATION_FAILED, -- 1.7.4.4