[libvirt] [PATCH V3] add console support in libxl
Daniel P. Berrange
berrange at redhat.com
Fri Jul 19 15:53:26 UTC 2013
On Fri, Jul 19, 2013 at 11:48:56PM +0800, Bamvor Jian Zhang wrote:
> this patch introduce the console api in libxl driver for both pv and
> hvm guest. and import and update the libxlMakeChrdevStr function
> which was deleted in commit dfa1e1dd.
>
> Signed-off-by: Bamvor Jian Zhang <bjzhang at suse.com>
> ---
> Changes since V2:
> 1), forbid parallel configure because libxl do not support it
> 2), only support one serial on libxl driver.
> 3), also remove console code in libxl driver, AFAICS serial is enough for connecting to libxl console.
> changes since V1:
> 1), add virDomainOpenConsoleEnsureACL
> 3), remove virReportOOMErrorFull when virAsprintf fail.
> 4), change size_t for non-nagetive number in libxlDomainOpenConsole
> size_t i;
> size_t num = 0;
> 5), fix for make check
> (1), replace virAsprintf with VIR_STRDUP in two places
> (2), delete space.
>
> src/libxl/libxl_conf.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++
> src/libxl/libxl_conf.h | 3 ++
> src/libxl/libxl_driver.c | 87 +++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 190 insertions(+)
>
> diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
> index 4a0fba9..539d537 100644
> --- a/src/libxl/libxl_conf.c
> +++ b/src/libxl/libxl_conf.c
> @@ -331,6 +331,90 @@ error:
> }
>
> static int
> +libxlMakeChrdevStr(virDomainChrDefPtr def, char **buf)
> +{
> + const char *type = virDomainChrTypeToString(def->source.type);
> + int ret;
> +
> + if (!type) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + "%s", _("unexpected chr device type"));
> + return -1;
> + }
> +
> + switch (def->source.type) {
> + case VIR_DOMAIN_CHR_TYPE_NULL:
> + case VIR_DOMAIN_CHR_TYPE_STDIO:
> + case VIR_DOMAIN_CHR_TYPE_VC:
> + case VIR_DOMAIN_CHR_TYPE_PTY:
> + if (VIR_STRDUP(*buf, type) < 0)
> + return -1;
> + break;
> +
> + case VIR_DOMAIN_CHR_TYPE_FILE:
> + case VIR_DOMAIN_CHR_TYPE_PIPE:
> + if (virAsprintf(buf, "%s:%s", type,
> + def->source.data.file.path) < 0)
> + return -1;
> + break;
> +
> + case VIR_DOMAIN_CHR_TYPE_DEV:
> + if (VIR_STRDUP(*buf, def->source.data.file.path) < 0)
> + return -1;
> + break;
> +
> + case VIR_DOMAIN_CHR_TYPE_UDP: {
> + const char *connectHost = def->source.data.udp.connectHost;
> + const char *bindHost = def->source.data.udp.bindHost;
> + const char *bindService = def->source.data.udp.bindService;
> +
> + if (connectHost == NULL)
> + connectHost = "";
> + if (bindHost == NULL)
> + bindHost = "";
> + if (bindService == NULL)
> + bindService = "0";
> +
> + ret = virAsprintf(buf, "udp:%s:%s@%s:%s",
> + connectHost,
> + def->source.data.udp.connectService,
> + bindHost,
> + bindService);
> + if (ret < 0)
> + return -1;
> + break;
> +
> + }
> + case VIR_DOMAIN_CHR_TYPE_TCP:
> + if (def->source.data.tcp.protocol == VIR_DOMAIN_CHR_TCP_PROTOCOL_TELNET)
> + ret = virAsprintf(buf, "telnet:%s:%s%s",
> + def->source.data.tcp.host,
> + def->source.data.tcp.service,
> + def->source.data.tcp.listen ? ",server,nowait" : "");
> + else
> + ret = virAsprintf(buf, "tcp:%s:%s%s",
> + def->source.data.tcp.host,
> + def->source.data.tcp.service,
> + def->source.data.tcp.listen ? ",server,nowait" : "");
> +
> + if (ret < 0)
> + return -1;
> + break;
> +
> + case VIR_DOMAIN_CHR_TYPE_UNIX:
> + ret = virAsprintf(buf, "unix:%s%s",
> + def->source.data.nix.path,
> + def->source.data.nix.listen ? ",server,nowait" : "");
> + if (ret < 0)
> + return -1;
> + break;
> +
> + }
> +
> + return 0;
> +}
> +
> +static int
> libxlMakeDomBuildInfo(virDomainDefPtr def, libxl_domain_config *d_config)
> {
> libxl_domain_build_info *b_info = &d_config->b_info;
> @@ -403,6 +487,22 @@ libxlMakeDomBuildInfo(virDomainDefPtr def, libxl_domain_config *d_config)
> if (VIR_STRDUP(b_info->u.hvm.boot, bootorder) < 0)
> goto error;
>
> + if (def->nserials) {
> + if (def->nserials > 1) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + "%s", _("Only one serial is supported by libxl"));
> + goto error;
> + }
> + if (libxlMakeChrdevStr(def->serials[0], &b_info->u.hvm.serial) < 0)
> + goto error;
> + }
> +
> + if (def->nparallels) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + "%s", _("Parallel is not supported"));
> + goto error;
> + }
> +
> /*
> * The following comment and calculation were taken directly from
> * libxenlight's internal function libxl_get_required_shadow_memory():
> diff --git a/src/libxl/libxl_conf.h b/src/libxl/libxl_conf.h
> index 2b4a281..861d689 100644
> --- a/src/libxl/libxl_conf.h
> +++ b/src/libxl/libxl_conf.h
> @@ -34,6 +34,7 @@
> # include "configmake.h"
> # include "virportallocator.h"
> # include "virobject.h"
> +# include "virchrdev.h"
>
>
> # define LIBXL_VNC_PORT_MIN 5900
> @@ -94,6 +95,8 @@ struct _libxlDomainObjPrivate {
>
> /* per domain libxl ctx */
> libxl_ctx *ctx;
> + /* console */
> + virChrdevsPtr devs;
> libxl_evgen_domain_death *deathW;
>
> /* list of libxl timeout registrations */
> diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
> index 358d387..b3a8d50 100644
> --- a/src/libxl/libxl_driver.c
> +++ b/src/libxl/libxl_driver.c
> @@ -417,6 +417,9 @@ libxlDomainObjPrivateAlloc(void)
>
> libxl_osevent_register_hooks(priv->ctx, &libxl_event_callbacks, priv);
>
> + if (!(priv->devs = virChrdevAlloc()))
> + return NULL;
> +
> return priv;
> }
>
> @@ -429,6 +432,7 @@ libxlDomainObjPrivateDispose(void *obj)
> libxl_evdisable_domain_death(priv->ctx, priv->deathW);
>
> libxl_ctx_free(priv->ctx);
> + virChrdevFree(priv->devs);
> }
>
> static void
> @@ -4493,6 +4497,88 @@ cleanup:
> return ret;
> }
>
> +
> +static int
> +libxlDomainOpenConsole(virDomainPtr dom,
> + const char *dev_name,
> + virStreamPtr st,
> + unsigned int flags)
> +{
> + libxlDriverPrivatePtr driver = dom->conn->privateData;
> + virDomainObjPtr vm = NULL;
> + int ret = -1;
> + virDomainChrDefPtr chr = NULL;
> + libxlDomainObjPrivatePtr priv;
> + char *console = NULL;
> +
> + virCheckFlags(VIR_DOMAIN_CONSOLE_SAFE |
> + VIR_DOMAIN_CONSOLE_FORCE, -1);
> +
> + libxlDriverLock(driver);
> + vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
> + libxlDriverUnlock(driver);
> + if (!vm) {
> + char uuidstr[VIR_UUID_STRING_BUFLEN];
> + virUUIDFormat(dom->uuid, uuidstr);
> + virReportError(VIR_ERR_NO_DOMAIN,
> + _("No domain with matching uuid '%s'"), uuidstr);
> + goto cleanup;
> + }
> +
> + if (virDomainOpenConsoleEnsureACL(dom->conn, vm->def) < 0)
> + goto cleanup;
> +
> + if (!virDomainObjIsActive(vm)) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + "%s", _("domain is not running"));
> + goto cleanup;
> + }
> +
> + priv = vm->privateData;
> +
> + if (vm->def->nserials)
> + chr = vm->def->serials[0];
Now you're ignoring 'dev_name' completely which is definitely not
right. You should be assigning aliases to the serial devices when
starting the guest, so you can match them here.
Daniel
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