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detect-virt: add --list-cvm option

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The --list-cvm option reports the known types of confidential virtualization
technology that can be detected.

Related: https://github.com/systemd/systemd/issues/27604
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2023-06-30 19:07:29 +01:00 committed by Luca Boccassi
parent 5e0c61f64d
commit f460fec915
3 changed files with 15 additions and 1 deletions
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6
man/systemd-detect-virt.xml
View file

@ -281,6 +281,12 @@
<listitem><para>Output all currently known and detectable container and VM environments.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--list-cvm</option></term>
<listitem><para>Output all currently known and detectable confidential virtualization technologies.</para></listitem>
</varlistentry>
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
</variablelist>

2
shell-completion/bash/systemd-detect-virt
View file

@ -29,7 +29,7 @@ _systemd_detect_virt() {
local -A OPTS=(
[STANDALONE]='-h --help --version -c --container -v --vm -q --quiet --cvm
--private-users'
--private-users --list --list-cvm'
)
_init_completion || return

8
src/detect-virt/detect-virt.c
View file

@ -42,6 +42,8 @@ static int help(void) {
" --cvm Only detect whether we are run in a confidential VM\n"
" -q --quiet Don't output anything, just set return value\n"
" --list List all known and detectable types of virtualization\n"
" --list-cvm List all known and detectable types of confidential \n"
" virtualization\n"
"\nSee the %s for details.\n",
program_invocation_short_name,
link);
@ -56,6 +58,7 @@ static int parse_argv(int argc, char *argv[]) {
ARG_PRIVATE_USERS,
ARG_LIST,
ARG_CVM,
ARG_LIST_CVM,
};
static const struct option options[] = {
@ -68,6 +71,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "quiet", no_argument, NULL, 'q' },
{ "cvm", no_argument, NULL, ARG_CVM },
{ "list", no_argument, NULL, ARG_LIST },
{ "list-cvm", no_argument, NULL, ARG_LIST_CVM },
{}
};
@ -114,6 +118,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_mode = ONLY_CVM;
return 1;
case ARG_LIST_CVM:
DUMP_STRING_TABLE(confidential_virtualization, ConfidentialVirtualization, _CONFIDENTIAL_VIRTUALIZATION_MAX);
return 0;
case '?':
return -EINVAL;