Re: [libvirt] [PATCH 1/3] bhyve: implement support for commandline args

Implement support for passing custom command line arguments to bhyve using the 'bhyve:commandline' element: <bhyve:commandline> <bhyve:arg value='-newarg'/> </bhyve:commandline> * Define virDomainXMLNamespace for the bhyve driver, which at this point supports only the 'commandline' element described above, * Update command generation code to inject these command line arguments between driver-generated arguments and the vmname positional argument. Signed-off-by: Roman Bogorodskiy <bogorodskiy(a)gmail.com&gt; --- docs/schemas/domaincommon.rng | 17 +++ src/bhyve/bhyve_command.c | 9 ++ src/bhyve/bhyve_conf.c | 15 +++ src/bhyve/bhyve_conf.h | 9 ++ src/bhyve/bhyve_domain.c | 107 +++++++++++++++++- src/bhyve/bhyve_domain.h | 1 + .../bhyvexml2argv-commandline.args | 9 ++ .../bhyvexml2argv-commandline.ldargs | 3 + .../bhyvexml2argv-commandline.xml | 27 +++++ tests/bhyvexml2argvtest.c | 1 + .../bhyvexml2xmlout-commandline.xml | 37 ++++++ tests/bhyvexml2xmltest.c | 1 + 12 files changed, 235 insertions(+), 1 deletion(-) create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-commandline.args create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-commandline.ldargs create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-commandline.xml create mode 100644 tests/bhyvexml2xmloutdata/bhyvexml2xmlout-commandline.xml diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index aa50eac424..7672639cb6 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -81,6 +81,9 @@ <optional> <ref name='launchSecurity'/> </optional> + <optional> + <ref name='bhyvecmdline'/> + </optional> </interleave> </element> </define> @@ -6127,6 +6130,20 @@ </element> </define> + <!-- + Optional hypervisor extensions in their own namespace: + Bhyve + --> + <define name="bhyvecmdline"> + <element name="commandline" ns="http://libvirt.org/schemas/domain/bhyve/1.0"> + <zeroOrMore> + <element name="arg"> + <attribute name='value'/> + </element> + </zeroOrMore> + </element> + </define> + <!-- Type library --> diff --git a/src/bhyve/bhyve_command.c b/src/bhyve/bhyve_command.c index 84fda08943..a1ae2026a0 100644 --- a/src/bhyve/bhyve_command.c +++ b/src/bhyve/bhyve_command.c @@ -28,6 +28,7 @@ #include "bhyve_capabilities.h" #include "bhyve_command.h" #include "bhyve_domain.h" +#include "bhyve_conf.h" #include "bhyve_driver.h" #include "datatypes.h" #include "viralloc.h" @@ -626,6 +627,14 @@ virBhyveProcessBuildBhyveCmd(virConnectPtr conn, if (bhyveBuildConsoleArgStr(def, cmd) < 0) goto error; + if (def->namespaceData) { + bhyveDomainCmdlineDefPtr bhyvecmd; + + bhyvecmd = def->namespaceData; + for (i = 0; i < bhyvecmd->num_args; i++) + virCommandAddArg(cmd, bhyvecmd->args[i]); + } + virCommandAddArg(cmd, def->name); return cmd; diff --git a/src/bhyve/bhyve_conf.c b/src/bhyve/bhyve_conf.c index 60baa2e848..75709801c7 100644 --- a/src/bhyve/bhyve_conf.c +++ b/src/bhyve/bhyve_conf.c @@ -25,6 +25,7 @@ #include "virlog.h" #include "virstring.h" #include "bhyve_conf.h" +#include "bhyve_domain.h" #include "configmake.h" #define VIR_FROM_THIS VIR_FROM_BHYVE @@ -107,3 +108,17 @@ virBhyveDriverConfigDispose(void *obj) VIR_FREE(cfg->firmwareDir); } + +void bhyveDomainCmdlineDefFree(bhyveDomainCmdlineDefPtr def) +{ + size_t i; + + if (!def) + return; + + for (i = 0; i < def->num_args; i++) + VIR_FREE(def->args[i]); + + VIR_FREE(def->args); + VIR_FREE(def); +} diff --git a/src/bhyve/bhyve_conf.h b/src/bhyve/bhyve_conf.h index 8da39fde7a..eb4a2e0fb8 100644 --- a/src/bhyve/bhyve_conf.h +++ b/src/bhyve/bhyve_conf.h @@ -29,4 +29,13 @@ virBhyveDriverConfigPtr virBhyveDriverGetConfig(bhyveConnPtr driver); int virBhyveLoadDriverConfig(virBhyveDriverConfigPtr cfg, const char *filename); +typedef struct _bhyveDomainCmdlineDef bhyveDomainCmdlineDef; +typedef bhyveDomainCmdlineDef *bhyveDomainCmdlineDefPtr; +struct _bhyveDomainCmdlineDef { + size_t num_args; + char **args; +}; + +void bhyveDomainCmdlineDefFree(bhyveDomainCmdlineDefPtr def); + #endif /* LIBVIRT_BHYVE_CONF_H */ diff --git a/src/bhyve/bhyve_domain.c b/src/bhyve/bhyve_domain.c index e54af75f4d..554188ebeb 100644 --- a/src/bhyve/bhyve_domain.c +++ b/src/bhyve/bhyve_domain.c @@ -20,16 +20,21 @@ #include <config.h> +#include "bhyve_conf.h" #include "bhyve_device.h" #include "bhyve_domain.h" #include "bhyve_capabilities.h" #include "viralloc.h" #include "virlog.h" +#include <libxml/xpathInternals.h> + #define VIR_FROM_THIS VIR_FROM_BHYVE VIR_LOG_INIT("bhyve.bhyve_domain"); +#define BHYVE_NAMESPACE_HREF "http://libvirt.org/schemas/domain/bhyve/1.0" + static void * bhyveDomainObjPrivateAlloc(void *opaque ATTRIBUTE_UNUSED) { @@ -157,7 +162,8 @@ virBhyveDriverCreateXMLConf(bhyveConnPtr driver) virBhyveDriverDomainDefParserConfig.priv = driver; return virDomainXMLOptionNew(&virBhyveDriverDomainDefParserConfig, &virBhyveDriverPrivateDataCallbacks, - NULL, NULL, NULL); + &virBhyveDriverDomainXMLNamespace, + NULL, NULL); } virDomainDefParserConfig virBhyveDriverDomainDefParserConfig = { @@ -165,3 +171,102 @@ virDomainDefParserConfig virBhyveDriverDomainDefParserConfig = { .domainPostParseCallback = bhyveDomainDefPostParse, .assignAddressesCallback = bhyveDomainDefAssignAddresses, }; + +static void +bhyveDomainDefNamespaceFree(void *nsdata) +{ + bhyveDomainCmdlineDefPtr cmd = nsdata; + + bhyveDomainCmdlineDefFree(cmd); +} + +static int +bhyveDomainDefNamespaceParse(xmlDocPtr xml ATTRIBUTE_UNUSED, + xmlNodePtr root ATTRIBUTE_UNUSED, + xmlXPathContextPtr ctxt, + void **data) +{ + bhyveDomainCmdlineDefPtr cmd = NULL; + bool uses_bhyve_ns = false; + xmlNodePtr *nodes = NULL; + int n; + size_t i; + + if (xmlXPathRegisterNs(ctxt, BAD_CAST "bhyve", BAD_CAST BHYVE_NAMESPACE_HREF) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Failed to register xml namespace '%s'"), + BHYVE_NAMESPACE_HREF); + return -1; + } + + if (VIR_ALLOC(cmd) < 0) + return -1; + + n = virXPathNodeSet("./bhyve:commandline/bhyve:arg", ctxt, &nodes); + if (n < 0) + goto error; + uses_bhyve_ns = n > 0; +

+ if (n && VIR_ALLOC_N(cmd->args, n) < 0) + goto error; + + for (i = 0; i < n; i++) { + cmd->args[cmd->num_args] = virXMLPropString(nodes[i], "value"); + if (cmd->args[cmd->num_args] == NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("No bhyve command-line argument specified")); + goto error; + } + cmd->num_args++; + } + + VIR_FREE(nodes); + + if (uses_bhyve_ns) + *data = cmd; + else + VIR_FREE(cmd);

+ + return 0; + + error: + VIR_FREE(nodes); + bhyveDomainDefNamespaceFree(cmd); + return -1; +} + +static int +bhyveDomainDefNamespaceFormatXML(virBufferPtr buf ATTRIBUTE_UNUSED,

+ void *nsdata)