diff options
Diffstat (limited to 'src/grp-network/networkd-wait-online.c')
| -rw-r--r-- | src/grp-network/networkd-wait-online.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/grp-network/networkd-wait-online.c b/src/grp-network/networkd-wait-online.c new file mode 100644 index 0000000000..a08272463e --- /dev/null +++ b/src/grp-network/networkd-wait-online.c @@ -0,0 +1,166 @@ + +/*** + This file is part of systemd. + + Copyright 2013 Tom Gundersen <teg@jklm.no> + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <getopt.h> + +#include <systemd/sd-daemon.h> + +#include "networkd-wait-online.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 void help(void) { + 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" + , program_invocation_short_name); +} + +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; +} + +int main(int argc, char *argv[]) { + _cleanup_(manager_freep) Manager *m = NULL; + int r; + + log_set_target(LOG_TARGET_AUTO); + log_parse_environment(); + log_open(); + + 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) { + log_error_errno(r, "Could not create manager: %m"); + goto finish; + } + + if (manager_all_configured(m)) { + r = 0; + goto finish; + } + + sd_notify(false, + "READY=1\n" + "STATUS=Waiting for network connections..."); + + r = sd_event_loop(m->event); + if (r < 0) { + log_error_errno(r, "Event loop failed: %m"); + goto finish; + } + +finish: + strv_free(arg_interfaces); + strv_free(arg_ignore); + + if (r >= 0) { + sd_notify(false, "STATUS=All interfaces configured..."); + + return EXIT_SUCCESS; + } else { + sd_notify(false, "STATUS=Failed waiting for network connectivity..."); + + return EXIT_FAILURE; + } +} |