From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xen.org
Cc: Juergen Gross <jgross@suse.com>,
wei.liu2@citrix.com, stefano.stabellini@eu.citrix.com,
George.Dunlap@eu.citrix.com, ian.jackson@eu.citrix.com,
cyliu@suse.com
Subject: [PATCH v3 3/5] libxl: add service function to check whether device model is running
Date: Wed, 23 Mar 2016 13:24:05 +0100 [thread overview]
Message-ID: <1458735847-9448-4-git-send-email-jgross@suse.com> (raw)
In-Reply-To: <1458735847-9448-1-git-send-email-jgross@suse.com>
Add an internal service function to check for a running device model.
This can be used later when adding devices to a domain requiring a
device model for either printing an error message or starting the
device model in case it is not already running.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
tools/libxl/libxl.c | 4 +---
tools/libxl/libxl_dm.c | 10 ++++++++++
2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 3471c4c..dcd0951 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -1532,7 +1532,6 @@ void libxl__destroy_domid(libxl__egc *egc, libxl__destroy_domid_state *dis)
libxl_ctx *ctx = CTX;
uint32_t domid = dis->domid;
char *dom_path;
- char *pid;
int rc, dm_present;
libxl__ev_child_init(&dis->destroyer);
@@ -1555,8 +1554,7 @@ void libxl__destroy_domid(libxl__egc *egc, libxl__destroy_domid_state *dis)
}
/* fall through */
case LIBXL_DOMAIN_TYPE_PV:
- pid = libxl__xs_read(gc, XBT_NULL, GCSPRINTF("/local/domain/%d/image/device-model-pid", domid));
- dm_present = (pid != NULL);
+ dm_present = libxl__dm_active(gc, domid);
break;
case LIBXL_DOMAIN_TYPE_INVALID:
rc = ERROR_FAIL;
diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index 361e584..bffb8f8 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -2150,6 +2150,16 @@ out:
return ret;
}
+int libxl__dm_active(libxl__gc *gc, uint32_t domid)
+{
+ char *pid, *path;
+
+ path = GCSPRINTF("/local/domain/%d/image/device-model-pid", domid);
+ pid = libxl__xs_read(gc, XBT_NULL, path);
+
+ return pid != NULL;
+}
+
/*
* Local variables:
* mode: C
--
2.6.2
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next prev parent reply other threads:[~2016-03-23 12:24 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-23 12:24 [PATCH v3 0/5] libxl: add support for qemu base pvusb backend Juergen Gross
2016-03-23 12:24 ` [PATCH v3 1/5] libxl: make libxl__need_xenpv_qemu() operate on domain config Juergen Gross
2016-03-24 20:28 ` Wei Liu
2016-03-25 6:13 ` Juergen Gross
2016-03-23 12:24 ` [PATCH v3 2/5] libxl: add new pvusb backend "qusb" provided by qemu Juergen Gross
2016-03-25 2:23 ` Chun Yan Liu
[not found] ` <56F5119C02000066000C0F24@suse.com>
2016-03-25 6:29 ` Juergen Gross
2016-03-25 6:38 ` Chun Yan Liu
2016-03-23 12:24 ` Juergen Gross [this message]
2016-03-24 20:28 ` [PATCH v3 3/5] libxl: add service function to check whether device model is running Wei Liu
2016-03-23 12:24 ` [PATCH v3 4/5] libxl: check for dynamic device model start required Juergen Gross
2016-03-25 2:06 ` Chun Yan Liu
[not found] ` <56F50DC102000066000C0EF4@suse.com>
2016-03-25 6:25 ` Juergen Gross
2016-03-25 6:29 ` Chun Yan Liu
2016-03-23 12:24 ` [PATCH v3 5/5] libxl: add domain config parameter to force start of qemu Juergen Gross
2016-03-24 20:28 ` Wei Liu
2016-03-24 20:35 ` Wei Liu
2016-03-25 6:20 ` Juergen Gross
2016-03-25 6:16 ` Juergen Gross
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