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From: Pawel Wieczorkiewicz <wipawel@amazon.de>
To: <xen-devel@lists.xen.org>, <xen-devel@lists.xenproject.org>
Cc: wipawel@amazon.com, "Wei Liu" <wl@xen.org>,
	"Ian Jackson" <ian.jackson@eu.citrix.com>,
	mpohlack@amazon.com,
	"Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>,
	"Pawel Wieczorkiewicz" <wipawel@amazon.de>
Subject: [Xen-devel] [PATCH 03/14] python: Add XC binding for Xen build ID
Date: Wed, 21 Aug 2019 08:19:20 +0000
Message-ID: <20190821081931.90887-4-wipawel@amazon.de> (raw)
In-Reply-To: <20190821081931.90887-1-wipawel@amazon.de>

Extend the list of xc() object methods with additional one to display
Xen's buildid. The implementation follows the libxl implementation
(e.g. max buildid size assumption being XC_PAGE_SIZE minus
sizeof(buildid->len)).

Signed-off-by: Pawel Wieczorkiewicz <wipawel@amazon.de>
Reviewed-by: Martin Mazein <amazein@amazon.de>
Reviewed-by: Andra-Irina Paraschiv <andraprs@amazon.com>
Reviewed-by: Norbert Manthey <nmanthey@amazon.de>
Acked-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
---
 tools/python/xen/lowlevel/xc/xc.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/tools/python/xen/lowlevel/xc/xc.c b/tools/python/xen/lowlevel/xc/xc.c
index 188bfa34da..7f0358ba9c 100644
--- a/tools/python/xen/lowlevel/xc/xc.c
+++ b/tools/python/xen/lowlevel/xc/xc.c
@@ -1214,6 +1214,26 @@ out:
     return ret_obj ? ret_obj : pyxc_error_to_exception(self->xc_handle);
 }
 
+static PyObject *pyxc_xenbuildid(XcObject *self)
+{
+    xen_build_id_t *buildid;
+    int i, r;
+    char *str;
+
+    buildid = alloca(XC_PAGE_SIZE);
+    buildid->len = XC_PAGE_SIZE - sizeof(*buildid);
+
+    r = xc_version(self->xc_handle, XENVER_build_id, buildid);
+    if ( r <= 0 )
+        return pyxc_error_to_exception(self->xc_handle);
+
+    str = alloca((r * 2) + 1);
+    for ( i = 0; i < r; i++ )
+        snprintf(&str[i * 2], 3, "%02hhx", buildid->buf[i]);
+
+    return Py_BuildValue("s", str);
+}
+
 static PyObject *pyxc_xeninfo(XcObject *self)
 {
     xen_extraversion_t xen_extra;
@@ -2297,6 +2317,13 @@ static PyMethodDef pyxc_methods[] = {
       "Returns [dict]: information about Xen"
       "        [None]: on failure.\n" },
 
+    { "buildid",
+      (PyCFunction)pyxc_xenbuildid,
+      METH_NOARGS, "\n"
+      "Get Xen buildid\n"
+      "Returns [str]: Xen buildid"
+      "        [None]: on failure.\n" },
+
     { "shadow_control", 
       (PyCFunction)pyxc_shadow_control, 
       METH_VARARGS | METH_KEYWORDS, "\n"
-- 
2.16.5




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  parent reply index

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-21  8:19 [Xen-devel] [PATCH 00/14] livepatch: new features and fixes Pawel Wieczorkiewicz
2019-08-21  8:19 ` [Xen-devel] [PATCH 01/14] livepatch: Always check hypervisor build ID upon hotpatch upload Pawel Wieczorkiewicz
2019-08-21 18:16   ` Konrad Rzeszutek Wilk
2019-08-21  8:19 ` [Xen-devel] [PATCH 02/14] livepatch: Allow to override inter-modules buildid dependency Pawel Wieczorkiewicz
2019-08-21  8:19 ` Pawel Wieczorkiewicz [this message]
2019-08-21  8:19 ` [Xen-devel] [PATCH 04/14] livepatch: Export payload structure via livepatch_payload.h Pawel Wieczorkiewicz
2019-08-21  8:19 ` [Xen-devel] [PATCH 05/14] livepatch: Implement pre-|post- apply|revert hooks Pawel Wieczorkiewicz
2019-08-21  8:19 ` [Xen-devel] [PATCH 06/14] livepatch: Add support for apply|revert action replacement hooks Pawel Wieczorkiewicz
2019-08-21 18:31   ` Konrad Rzeszutek Wilk
2019-08-21 19:06     ` Wieczorkiewicz, Pawel
2019-08-26 14:30       ` Konrad Rzeszutek Wilk
2019-08-21  8:19 ` [Xen-devel] [PATCH 07/14] livepatch: Do not enforce ELF_LIVEPATCH_FUNC section presence Pawel Wieczorkiewicz
2019-08-21  8:19 ` [Xen-devel] [PATCH 08/14] livepatch: always print XENLOG_ERR information Pawel Wieczorkiewicz
2019-08-21  8:19 ` [Xen-devel] [PATCH 09/14] livepatch: Add per-function applied/reverted state tracking marker Pawel Wieczorkiewicz
2019-08-21 18:28   ` Konrad Rzeszutek Wilk
2019-08-21 19:00     ` Wieczorkiewicz, Pawel
2019-08-21 21:34   ` Julien Grall
2019-08-22  7:44     ` Wieczorkiewicz, Pawel
2019-08-22 10:07       ` Julien Grall
2019-08-22 10:20         ` Wieczorkiewicz, Pawel
2019-08-22 10:43           ` Julien Grall
2019-08-22 11:15             ` Wieczorkiewicz, Pawel
2019-08-22 15:02               ` Julien Grall
2019-08-22 10:29   ` Julien Grall
2019-08-22 11:02     ` Wieczorkiewicz, Pawel
2019-08-22 15:30       ` Julien Grall
2019-08-22 15:42         ` Wieczorkiewicz, Pawel
2019-08-21  8:19 ` [Xen-devel] [PATCH 10/14] livepatch: Add support for inline asm hotpatching expectations Pawel Wieczorkiewicz
2019-08-21 18:30   ` Konrad Rzeszutek Wilk
2019-08-21 19:02     ` Wieczorkiewicz, Pawel
2019-08-22 10:31   ` Julien Grall
2019-08-22 11:03     ` Wieczorkiewicz, Pawel
2019-08-21  8:19 ` [Xen-devel] [PATCH 11/14] livepatch: Add support for modules .modinfo section metadata Pawel Wieczorkiewicz
2019-08-21  8:19 ` [Xen-devel] [PATCH 12/14] livepatch: Handle arbitrary size names with the list operation Pawel Wieczorkiewicz
2019-08-21  8:19 ` [Xen-devel] [PATCH 13/14] livepatch: Add metadata runtime retrieval mechanism Pawel Wieczorkiewicz
2019-08-21  8:19 ` [Xen-devel] [PATCH 14/14] livepatch: Add python bindings for livepatch operations Pawel Wieczorkiewicz
2019-08-22 21:55   ` Marek Marczykowski-Górecki
2019-08-27  8:46 ` [Xen-devel] [PATCH v2 00/12] livepatch: new features and fixes Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 01/12] livepatch: Always check hypervisor build ID upon hotpatch upload Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 02/12] livepatch: Allow to override inter-modules buildid dependency Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 03/12] livepatch: Export payload structure via livepatch_payload.h Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 04/12] livepatch: Implement pre-|post- apply|revert hooks Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 05/12] livepatch: Add support for apply|revert action replacement hooks Pawel Wieczorkiewicz
2019-08-27 16:58     ` Konrad Rzeszutek Wilk
2019-08-28  7:37       ` Wieczorkiewicz, Pawel
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 06/12] livepatch: Do not enforce ELF_LIVEPATCH_FUNC section presence Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 07/12] livepatch: Add per-function applied/reverted state tracking marker Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 08/12] livepatch: Add support for inline asm hotpatching expectations Pawel Wieczorkiewicz
2019-08-29 14:34     ` Konrad Rzeszutek Wilk
2019-08-29 15:29       ` Wieczorkiewicz, Pawel
2019-08-29 15:58     ` Konrad Rzeszutek Wilk
2019-08-29 16:16       ` Wieczorkiewicz, Pawel
2019-08-29 17:49         ` Konrad Rzeszutek Wilk
2019-08-29 19:07           ` Wieczorkiewicz, Pawel
2019-08-29 20:48             ` Konrad Rzeszutek Wilk
2019-09-05 18:05     ` Konrad Rzeszutek Wilk
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 09/12] livepatch: Add support for modules .modinfo section metadata Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 10/12] livepatch: Handle arbitrary size names with the list operation Pawel Wieczorkiewicz
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 11/12] livepatch: Add metadata runtime retrieval mechanism Pawel Wieczorkiewicz
2019-08-29 20:48     ` Konrad Rzeszutek Wilk
2019-08-27  8:46   ` [Xen-devel] [PATCH v2 12/12] livepatch: Add python bindings for livepatch operations Pawel Wieczorkiewicz
2019-08-28 13:21     ` Marek Marczykowski-Górecki
2019-08-29 19:23   ` [Xen-devel] [PATCH v2 00/12] livepatch: new features and fixes Konrad Rzeszutek Wilk
2019-09-05 19:13   ` Konrad Rzeszutek Wilk
2019-09-06 22:52     ` Julien Grall
2019-09-06 22:42   ` Julien Grall

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