1 files changed, 152 insertions, 0 deletions
diff --git a/src/network/wait-online/wait-online.c b/src/network/wait-online/wait-online.c
new file mode 100644
index 0000000..71b6cf6
--- /dev/null
+++ b/src/network/wait-online/wait-online.c
@@ -0,0 +1,152 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <getopt.h>
+
+#include "sd-daemon.h"
+
+#include "daemon-util.h"
+#include "main-func.h"
+#include "manager.h"
+#include "pretty-print.h"
+#include "signal-util.h"
+#include "strv.h"
+
+static bool arg_quiet = false;
+static usec_t arg_timeout = 120 * USEC_PER_SEC;
+static char **arg_interfaces = NULL;
+static char **arg_ignore = NULL;
+
+STATIC_DESTRUCTOR_REGISTER(arg_interfaces, strv_freep);
+STATIC_DESTRUCTOR_REGISTER(arg_ignore, strv_freep);
+
+static int help(void) {
+        _cleanup_free_ char *link = NULL;
+        int r;
+
+        r = terminal_urlify_man("systemd-networkd-wait-online.service", "8", &link);
+        if (r < 0)
+                return log_oom();
+
+        printf("%s [OPTIONS...]\n\n"
+               "Block until network is configured.\n\n"
+               "  -h --help                 Show this help\n"
+               "     --version              Print version string\n"
+               "  -q --quiet                Do not show status information\n"
+               "  -i --interface=INTERFACE  Block until at least these interfaces have appeared\n"
+               "     --ignore=INTERFACE     Don't take these interfaces into account\n"
+               "     --timeout=SECS         Maximum time to wait for network connectivity\n"
+               "\nSee the %s for details.\n"
+               , program_invocation_short_name
+               , link
+        );
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_VERSION = 0x100,
+                ARG_IGNORE,
+                ARG_TIMEOUT,
+        };
+
+        static const struct option options[] = {
+                { "help",            no_argument,       NULL, 'h'         },
+                { "version",         no_argument,       NULL, ARG_VERSION },
+                { "quiet",           no_argument,       NULL, 'q'         },
+                { "interface",       required_argument, NULL, 'i'         },
+                { "ignore",          required_argument, NULL, ARG_IGNORE  },
+                { "timeout",         required_argument, NULL, ARG_TIMEOUT  },
+                {}
+        };
+
+        int c, r;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "+hi:q", options, NULL)) >= 0)
+
+                switch (c) {
+
+                case 'h':
+                        help();
+                        return 0;
+
+                case 'q':
+                        arg_quiet = true;
+                        break;
+
+                case ARG_VERSION:
+                        return version();
+
+                case 'i':
+                        if (strv_extend(&arg_interfaces, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
+                case ARG_IGNORE:
+                        if (strv_extend(&arg_ignore, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
+                case ARG_TIMEOUT:
+                        r = parse_sec(optarg, &arg_timeout);
+                        if (r < 0)
+                                return r;
+
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached("Unhandled option");
+                }
+
+        return 1;
+}
+
+static int run(int argc, char *argv[]) {
+        _cleanup_(notify_on_cleanup) const char *notify_message = NULL;
+        _cleanup_(manager_freep) Manager *m = NULL;
+        int r;
+
+        log_setup_service();
+
+        umask(0022);
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r;
+
+        if (arg_quiet)
+                log_set_max_level(LOG_WARNING);
+
+        assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+
+        r = manager_new(&m, arg_interfaces, arg_ignore, arg_timeout);
+        if (r < 0)
+                return log_error_errno(r, "Could not create manager: %m");
+
+        if (manager_all_configured(m))
+                goto success;
+
+        notify_message = notify_start("READY=1\n"
+                                      "STATUS=Waiting for network connections...",
+                                      "STATUS=Failed to wait for network connectivity...");
+
+        r = sd_event_loop(m->event);
+        if (r < 0)
+                return log_error_errno(r, "Event loop failed: %m");
+
+success:
+        notify_message = "STATUS=All interfaces configured...";
+
+        return 0;
+}
+
+DEFINE_MAIN_FUNCTION(run);