udev: support ENV{}=="" global property matches

[elogind.git] / src / detect-virt / detect-virt.c

diff --git a/src/detect-virt/detect-virt.c b/src/detect-virt/detect-virt.c
index bd3ee452c12e67e1696423cc5fd3bc84160de189..ff5bee56f91c5f4e7f62920dfdc81d0ad4c413c5 100644 (file)
--- a/src/detect-virt/detect-virt.c
+++ b/src/detect-virt/detect-virt.c
@@ -36,18 +36,15 @@ static enum {
         ONLY_CONTAINER
 } arg_mode = ANY_VIRTUALIZATION;
 
-static int help(void) {
-
+static void help(void) {
         printf("%s [OPTIONS...]\n\n"
                "Detect execution in a virtualized environment.\n\n"
                "  -h --help             Show this help\n"
                "     --version          Show package version\n"
                "  -c --container        Only detect whether we are run in a container\n"
                "  -v --vm               Only detect whether we are run in a VM\n"
-               "  -q --quiet            Don't output anything, just set return value\n",
-               program_invocation_short_name);
-
-        return 0;
+               "  -q --quiet            Don't output anything, just set return value\n"
+               , program_invocation_short_name);
 }
 
 static int parse_argv(int argc, char *argv[]) {
@@ -62,7 +59,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "container", no_argument,       NULL, 'c'           },
                 { "vm",        optional_argument, NULL, 'v'           },
                 { "quiet",     no_argument,       NULL, 'q'           },
-                { NULL,        0,                 NULL, 0             }
+                {}
         };
 
         int c;
@@ -70,7 +67,7 @@ static int parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "hqcv", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "hqcv", options, NULL)) >= 0)
 
                 switch (c) {
 
@@ -99,13 +96,12 @@ static int parse_argv(int argc, char *argv[]) {
                         return -EINVAL;
 
                 default:
-                        log_error("Unknown option code %c", c);
-                        return -EINVAL;
+                        assert_not_reached("Unhandled option");
                 }
-        }
 
         if (optind < argc) {
-                help();
+                log_error("%s takes no arguments.",
+                          program_invocation_short_name);
                 return -EINVAL;
         }
 
@@ -114,8 +110,8 @@ static int parse_argv(int argc, char *argv[]) {
 
 int main(int argc, char *argv[]) {
         const char *id = NULL;
-        int r;
         int retval = EXIT_SUCCESS;
+        int r;
 
         /* This is mostly intended to be used for scripts which want
          * to detect whether we are being run in a virtualized
@@ -131,7 +127,7 @@ int main(int argc, char *argv[]) {
         switch (arg_mode) {
 
         case ANY_VIRTUALIZATION: {
-                Virtualization v;
+                int v;
 
                 v = detect_virtualization(&id);
                 if (v < 0) {