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Accepting request 585178 from home:bfrogers:branches:Virtualization

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Add support for setting OEM strings table (fate#323624)

OBS-URL: https://build.opensuse.org/request/show/585178
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=398
This commit is contained in:
Bruce Rogers 2018-03-09 22:01:22 +00:00 committed by Git OBS Bridge
parent dab1823188
commit a40c4fea74
7 changed files with 242 additions and 0 deletions
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215
0076-smbios-support-setting-OEM-strings-.patch Normal file
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@ -0,0 +1,215 @@
From 3eb1915349b247cd88fd050c0caf37070b5e6977 Mon Sep 17 00:00:00 2001
From: "Daniel P. Berrange" <berrange@redhat.com>
Date: Sat, 28 Oct 2017 21:51:36 +0100
Subject: [PATCH] smbios: support setting OEM strings table
The cloud-init program currently allows fetching of its data by repurposing of
the 'system' type 'serial' field. This is a clear abuse of the serial field that
would clash with other valid usage a virt management app might have for that
field.
Fortunately the SMBIOS defines an "OEM Strings" table whose puporse is to allow
exposing of arbitrary vendor specific strings to the operating system. This is
perfect for use with cloud-init, or as a way to pass arguments to OS installers
such as anaconda.
This patch makes it easier to support this with QEMU. e.g.
$QEMU -smbios type=11,value=Hello,value=World,value=Tricky,,value=test
Which results in the guest seeing dmidecode data
Handle 0x0E00, DMI type 11, 5 bytes
OEM Strings
String 1: Hello
String 2: World
String 3: Tricky,value=test
It is suggested that any app wanting to make use of this OEM strings capability
for accepting data from the host mgmt layer should use its name as a string
prefix. e.g. to expose OEM strings targetting both cloud init and anaconda in
parallel the mgmt app could set
$QEMU -smbios type=11,value=cloud-init:ds=nocloud-net;s=http://10.10.0.1:8000/,\
value=anaconda:method=http://dl.fedoraproject.org/pub/fedora/linux/releases/25/x86_64/os
which would appear as
Handle 0x0E00, DMI type 11, 5 bytes
OEM Strings
String 1: cloud-init:ds=nocloud-net;s=http://10.10.0.1:8000/
String 2: anaconda:method=http://dl.fedoraproject.org/pub/fedora/linux/releases/25/x86_64/os
Use of such string prefixes means the app won't have to care which string slot
its data appears in.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 2d6dcbf93fb01b4a7f45a93d276d4d74b16392dd)
[BR: FATE#323624]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
hw/smbios/smbios.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++
hw/smbios/smbios_build.h | 12 ++++++++
include/hw/smbios/smbios.h | 6 ++++
3 files changed, 90 insertions(+)
diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c
index 1a5437a07d..5d11f01874 100644
--- a/hw/smbios/smbios.c
+++ b/hw/smbios/smbios.c
@@ -95,6 +95,11 @@ static struct {
const char *sock_pfx, *manufacturer, *version, *serial, *asset, *part;
} type4;
+static struct {
+ size_t nvalues;
+ const char **values;
+} type11;
+
static struct {
const char *loc_pfx, *bank, *manufacturer, *serial, *asset, *part;
uint16_t speed;
@@ -282,6 +287,14 @@ static const QemuOptDesc qemu_smbios_type4_opts[] = {
{ /* end of list */ }
};
+static const QemuOptDesc qemu_smbios_type11_opts[] = {
+ {
+ .name = "value",
+ .type = QEMU_OPT_STRING,
+ .help = "OEM string data",
+ },
+};
+
static const QemuOptDesc qemu_smbios_type17_opts[] = {
{
.name = "type",
@@ -590,6 +603,27 @@ static void smbios_build_type_4_table(unsigned instance)
smbios_type4_count++;
}
+static void smbios_build_type_11_table(void)
+{
+ char count_str[128];
+ size_t i;
+
+ if (type11.nvalues == 0) {
+ return;
+ }
+
+ SMBIOS_BUILD_TABLE_PRE(11, 0xe00, true); /* required */
+
+ snprintf(count_str, sizeof(count_str), "%zu", type11.nvalues);
+ t->count = type11.nvalues;
+
+ for (i = 0; i < type11.nvalues; i++) {
+ SMBIOS_TABLE_SET_STR_LIST(11, type11.values[i]);
+ }
+
+ SMBIOS_BUILD_TABLE_POST;
+}
+
#define ONE_KB ((ram_addr_t)1 << 10)
#define ONE_MB ((ram_addr_t)1 << 20)
#define ONE_GB ((ram_addr_t)1 << 30)
@@ -832,6 +866,8 @@ void smbios_get_tables(const struct smbios_phys_mem_area *mem_array,
smbios_build_type_4_table(i);
}
+ smbios_build_type_11_table();
+
#define MAX_DIMM_SZ (16ll * ONE_GB)
#define GET_DIMM_SZ ((i < dimm_cnt - 1) ? MAX_DIMM_SZ \
: ((ram_size - 1) % MAX_DIMM_SZ) + 1)
@@ -882,6 +918,38 @@ static void save_opt(const char **dest, QemuOpts *opts, const char *name)
}
}
+
+struct opt_list {
+ const char *name;
+ size_t *ndest;
+ const char ***dest;
+};
+
+static int save_opt_one(void *opaque,
+ const char *name, const char *value,
+ Error **errp)
+{
+ struct opt_list *opt = opaque;
+
+ if (!g_str_equal(name, opt->name)) {
+ return 0;
+ }
+
+ *opt->dest = g_renew(const char *, *opt->dest, (*opt->ndest) + 1);
+ (*opt->dest)[*opt->ndest] = value;
+ (*opt->ndest)++;
+ return 0;
+}
+
+static void save_opt_list(size_t *ndest, const char ***dest,
+ QemuOpts *opts, const char *name)
+{
+ struct opt_list opt = {
+ name, ndest, dest,
+ };
+ qemu_opt_foreach(opts, save_opt_one, &opt, NULL);
+}
+
void smbios_entry_add(QemuOpts *opts, Error **errp)
{
const char *val;
@@ -1035,6 +1103,10 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
save_opt(&type4.asset, opts, "asset");
save_opt(&type4.part, opts, "part");
return;
+ case 11:
+ qemu_opts_validate(opts, qemu_smbios_type11_opts, &error_fatal);
+ save_opt_list(&type11.nvalues, &type11.values, opts, "value");
+ return;
case 17:
qemu_opts_validate(opts, qemu_smbios_type17_opts, &error_fatal);
save_opt(&type17.loc_pfx, opts, "loc_pfx");
diff --git a/hw/smbios/smbios_build.h b/hw/smbios/smbios_build.h
index 68b8b72e09..93b360d520 100644
--- a/hw/smbios/smbios_build.h
+++ b/hw/smbios/smbios_build.h
@@ -63,6 +63,18 @@ extern unsigned smbios_table_cnt;
} \
} while (0)
+#define SMBIOS_TABLE_SET_STR_LIST(tbl_type, value) \
+ do { \
+ int len = (value != NULL) ? strlen(value) + 1 : 0; \
+ if (len > 1) { \
+ smbios_tables = g_realloc(smbios_tables, \
+ smbios_tables_len + len); \
+ memcpy(smbios_tables + smbios_tables_len, value, len); \
+ smbios_tables_len += len; \
+ ++str_index; \
+ } \
+ } while (0)
+
#define SMBIOS_BUILD_TABLE_POST \
do { \
size_t term_cnt, t_size; \
diff --git a/include/hw/smbios/smbios.h b/include/hw/smbios/smbios.h
index 31e8d5f47e..a83adb93d7 100644
--- a/include/hw/smbios/smbios.h
+++ b/include/hw/smbios/smbios.h
@@ -195,6 +195,12 @@ struct smbios_type_4 {
uint16_t processor_family2;
} QEMU_PACKED;
+/* SMBIOS type 11 - OEM strings */
+struct smbios_type_11 {
+ struct smbios_structure_header header;
+ uint8_t count;
+} QEMU_PACKED;
+
/* SMBIOS type 16 - Physical Memory Array (v2.7) */
struct smbios_type_16 {
struct smbios_structure_header header;

7
qemu-linux-user.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Fri Mar 9 20:52:00 UTC 2018 - brogers@suse.com
- Patch queue updated from git://github.com/openSUSE/qemu.git opensuse-2.11
* Patches added:
0076-smbios-support-setting-OEM-strings-.patch
-------------------------------------------------------------------
Sat Mar 3 14:24:13 UTC 2018 - brogers@suse.com

2
qemu-linux-user.spec
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@ -101,6 +101,7 @@ Patch0072: 0072-tests-qmp-test-blacklist-query-sev-.patch
Patch0073: 0073-sev-i386-add-migration-blocker.patch
Patch0074: 0074-cpu-i386-populate-CPUID-0x8000_001F.patch
Patch0075: 0075-migration-warn-about-inconsistent-s.patch
Patch0076: 0076-smbios-support-setting-OEM-strings-.patch
# Please do not add QEMU patches manually here.
# Run update_git.sh to regenerate this queue.
Source400: update_git.sh
@ -205,6 +206,7 @@ syscall layer occurs on the native hardware and operating system.
%patch0073 -p1
%patch0074 -p1
%patch0075 -p1
%patch0076 -p1
%build
./configure \

7
qemu-testsuite.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Fri Mar 9 20:51:57 UTC 2018 - brogers@suse.com
- Add support for setting OEM strings table (fate#323624)
0076-smbios-support-setting-OEM-strings-.patch
- Patch queue updated from git://github.com/openSUSE/qemu.git opensuse-2.11
-------------------------------------------------------------------
Sat Mar 3 14:24:10 UTC 2018 - brogers@suse.com

2
qemu-testsuite.spec
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@ -205,6 +205,7 @@ Patch0072: 0072-tests-qmp-test-blacklist-query-sev-.patch
Patch0073: 0073-sev-i386-add-migration-blocker.patch
Patch0074: 0074-cpu-i386-populate-CPUID-0x8000_001F.patch
Patch0075: 0075-migration-warn-about-inconsistent-s.patch
Patch0076: 0076-smbios-support-setting-OEM-strings-.patch
# Please do not add QEMU patches manually here.
# Run update_git.sh to regenerate this queue.
@ -879,6 +880,7 @@ This package provides a service file for starting and stopping KSM.
%patch0073 -p1
%patch0074 -p1
%patch0075 -p1
%patch0076 -p1
%if 0%{?suse_version} > 1320
%patch1000 -p1

7
qemu.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Fri Mar 9 20:51:57 UTC 2018 - brogers@suse.com
- Add support for setting OEM strings table (fate#323624)
0076-smbios-support-setting-OEM-strings-.patch
- Patch queue updated from git://github.com/openSUSE/qemu.git opensuse-2.11
-------------------------------------------------------------------
Sat Mar 3 14:24:10 UTC 2018 - brogers@suse.com

2
qemu.spec
View File

@ -205,6 +205,7 @@ Patch0072: 0072-tests-qmp-test-blacklist-query-sev-.patch
Patch0073: 0073-sev-i386-add-migration-blocker.patch
Patch0074: 0074-cpu-i386-populate-CPUID-0x8000_001F.patch
Patch0075: 0075-migration-warn-about-inconsistent-s.patch
Patch0076: 0076-smbios-support-setting-OEM-strings-.patch
# Please do not add QEMU patches manually here.
# Run update_git.sh to regenerate this queue.
@ -879,6 +880,7 @@ This package provides a service file for starting and stopping KSM.
%patch0073 -p1
%patch0074 -p1
%patch0075 -p1
%patch0076 -p1
%if 0%{?suse_version} > 1320
%patch1000 -p1