1 files changed, 102 insertions, 0 deletions
diff --git a/src/boot/boot-check-no-failures.c b/src/boot/boot-check-no-failures.c
new file mode 100644
index 0000000..3284a04
--- /dev/null
+++ b/src/boot/boot-check-no-failures.c
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "sd-bus.h"
+
+#include "alloc-util.h"
+#include "bus-error.h"
+#include "log.h"
+#include "main-func.h"
+#include "util.h"
+
+static int help(void) {
+
+        printf("%s [COMMAND] [OPTIONS...]\n"
+               "\n"
+               "Verify system operational state.\n\n"
+               "  -h --help          Show this help\n"
+               "     --version       Print version\n",
+               program_invocation_short_name);
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+        enum {
+                ARG_PATH = 0x100,
+                ARG_VERSION,
+        };
+
+        static const struct option options[] = {
+                { "help",         no_argument,       NULL, 'h'              },
+                { "version",      no_argument,       NULL, ARG_VERSION      },
+                {}
+        };
+
+        int c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
+                switch (c) {
+
+                case 'h':
+                        help();
+                        return 0;
+
+                case ARG_VERSION:
+                        return version();
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached("Unknown option");
+                }
+
+        return 1;
+}
+
+static int run(int argc, char *argv[]) {
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+        uint32_t n;
+        int r;
+
+        log_parse_environment();
+        log_open();
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r;
+
+        r = sd_bus_open_system(&bus);
+        if (r < 0)
+                return log_error_errno(r, "Failed to connect to system bus: %m");
+
+        r = sd_bus_get_property_trivial(
+                        bus,
+                        "org.freedesktop.systemd1",
+                        "/org/freedesktop/systemd1",
+                        "org.freedesktop.systemd1.Manager",
+                        "NFailedUnits",
+                        &error,
+                        'u',
+                        &n);
+        if (r < 0)
+                return log_error_errno(r, "Failed to get failed units counter: %s", bus_error_message(&error, r));
+
+        if (n > 0)
+                log_notice("Health check: %" PRIu32 " units have failed.", n);
+        else
+                log_info("Health check: no failed units.");
+
+        return n > 0;
+}
+
+DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);