detect-virt: add new --list command for showing all currently known VM/container envs

1 files changed, 8 insertions, 0 deletions

diff --git a/src/detect-virt/detect-virt.c b/src/detect-virt/detect-virt.c
index 3fbcdf5556..197e526b05 100644
--- a/src/detect-virt/detect-virt.c
+++ b/src/detect-virt/detect-virt.c
@@ -10,6 +10,7 @@
 #include <stdbool.h>
 #include <stdlib.h>
 
+#include "string-table.h"
 #include "util.h"
 #include "virt.h"
 
@@ -32,6 +33,7 @@ static void help(void) {
                "  -r --chroot           Detect whether we are run in a chroot() environment\n"
                "     --private-users    Only detect whether we are running in a user namespace\n"
                "  -q --quiet            Don't output anything, just set return value\n"
+               "     --list             List all known and detectable types of virtualization\n"
                , program_invocation_short_name);
 }
 
@@ -40,6 +42,7 @@ static int parse_argv(int argc, char *argv[]) {
         enum {
                 ARG_VERSION = 0x100,
                 ARG_PRIVATE_USERS,
+                ARG_LIST,
         };
 
         static const struct option options[] = {
@@ -50,6 +53,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "chroot",        no_argument, NULL, 'r'               },
                 { "private-users", no_argument, NULL, ARG_PRIVATE_USERS },
                 { "quiet",         no_argument, NULL, 'q'               },
+                { "list",          no_argument, NULL, ARG_LIST          },
                 {}
         };
 
@@ -89,6 +93,10 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_mode = ONLY_CHROOT;
                         break;
 
+                case ARG_LIST:
+                        DUMP_STRING_TABLE(virtualization, int, _VIRTUALIZATION_MAX);
+                        return 0;
+
                 case '?':
                         return -EINVAL;