summaryrefslogtreecommitdiffstats
path: root/src/network/wait-online/wait-online.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/network/wait-online/wait-online.c')
-rw-r--r--src/network/wait-online/wait-online.c238
1 files changed, 238 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..5328bba
--- /dev/null
+++ b/src/network/wait-online/wait-online.c
@@ -0,0 +1,238 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <getopt.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "sd-daemon.h"
+
+#include "build.h"
+#include "daemon-util.h"
+#include "main-func.h"
+#include "manager.h"
+#include "pretty-print.h"
+#include "signal-util.h"
+#include "socket-util.h"
+#include "strv.h"
+
+static bool arg_quiet = false;
+static usec_t arg_timeout = 120 * USEC_PER_SEC;
+static Hashmap *arg_interfaces = NULL;
+static char **arg_ignore = NULL;
+static LinkOperationalStateRange arg_required_operstate = { _LINK_OPERSTATE_INVALID, _LINK_OPERSTATE_INVALID };
+static AddressFamily arg_required_family = ADDRESS_FAMILY_NO;
+static bool arg_any = false;
+
+STATIC_DESTRUCTOR_REGISTER(arg_interfaces, hashmap_free_free_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[:MIN_OPERSTATE[:MAX_OPERSTATE]]\n"
+ " Block until at least these interfaces have appeared\n"
+ " --ignore=INTERFACE Don't take these interfaces into account\n"
+ " -o --operational-state=MIN_OPERSTATE[:MAX_OPERSTATE]\n"
+ " Required operational state\n"
+ " -4 --ipv4 Requires at least one IPv4 address\n"
+ " -6 --ipv6 Requires at least one IPv6 address\n"
+ " --any Wait until at least one of the interfaces is online\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_interface_with_operstate_range(const char *str) {
+ _cleanup_free_ char *ifname = NULL;
+ _cleanup_free_ LinkOperationalStateRange *range = NULL;
+ const char *p;
+ int r;
+
+ assert(str);
+
+ range = new(LinkOperationalStateRange, 1);
+ if (!range)
+ return log_oom();
+
+ p = strchr(str, ':');
+ if (p) {
+ r = parse_operational_state_range(p + 1, range);
+ if (r < 0)
+ log_error_errno(r, "Invalid operational state range '%s'", p + 1);
+
+ ifname = strndup(optarg, p - optarg);
+ } else {
+ range->min = _LINK_OPERSTATE_INVALID;
+ range->max = _LINK_OPERSTATE_INVALID;
+ ifname = strdup(str);
+ }
+ if (!ifname)
+ return log_oom();
+
+ if (!ifname_valid(ifname))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Invalid interface name '%s'", ifname);
+
+ r = hashmap_ensure_put(&arg_interfaces, &string_hash_ops, ifname, TAKE_PTR(range));
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0)
+ return log_error_errno(r, "Failed to store interface name: %m");
+ if (r == 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Interface name %s is already specified", ifname);
+
+ TAKE_PTR(ifname);
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_IGNORE,
+ ARG_ANY,
+ 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 },
+ { "operational-state", required_argument, NULL, 'o' },
+ { "ipv4", no_argument, NULL, '4' },
+ { "ipv6", no_argument, NULL, '6' },
+ { "any", no_argument, NULL, ARG_ANY },
+ { "timeout", required_argument, NULL, ARG_TIMEOUT },
+ {}
+ };
+
+ int c, r;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hi:qo:46", options, NULL)) >= 0)
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case 'q':
+ arg_quiet = true;
+ break;
+
+ case ARG_VERSION:
+ return version();
+
+ case 'i':
+ r = parse_interface_with_operstate_range(optarg);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_IGNORE:
+ if (strv_extend(&arg_ignore, optarg) < 0)
+ return log_oom();
+
+ break;
+
+ case 'o': {
+ LinkOperationalStateRange range;
+
+ r = parse_operational_state_range(optarg, &range);
+ if (r < 0)
+ return log_error_errno(r, "Invalid operational state range '%s'", optarg);
+
+ arg_required_operstate = range;
+
+ break;
+ }
+
+ case '4':
+ arg_required_family |= ADDRESS_FAMILY_IPV4;
+ break;
+
+ case '6':
+ arg_required_family |= ADDRESS_FAMILY_IPV6;
+ break;
+
+ case ARG_ANY:
+ arg_any = true;
+ break;
+
+ case ARG_TIMEOUT:
+ r = parse_sec(optarg, &arg_timeout);
+ if (r < 0)
+ return r;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached();
+ }
+
+ return 1;
+}
+
+static int run(int argc, char *argv[]) {
+ _cleanup_(manager_freep) Manager *m = NULL;
+ _unused_ _cleanup_(notify_on_cleanup) const char *notify_message = NULL;
+ int r;
+
+ log_setup();
+
+ umask(0022);
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r;
+
+ if (arg_quiet)
+ log_set_max_level(LOG_ERR);
+
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+
+ r = manager_new(&m, arg_interfaces, arg_ignore, arg_required_operstate, arg_required_family, arg_any, arg_timeout);
+ if (r < 0)
+ return log_error_errno(r, "Could not create manager: %m");
+
+ if (manager_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 == -ETIMEDOUT)
+ return log_error_errno(r, "Timeout occurred while waiting for network connectivity.");
+ 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);