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/* 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_RANGE_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)
return log_error_errno(r, "Invalid operational state range: %s", p + 1);
ifname = strndup(optarg, p - optarg);
} else {
*range = LINK_OPERSTATE_RANGE_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, 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(EEXIST),
"Interface name %s is already specified.", ifname);
TAKE_PTR(ifname);
TAKE_PTR(range);
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':
r = parse_operational_state_range(optarg, &arg_required_operstate);
if (r < 0)
return log_error_errno(r, "Invalid operational state range '%s'", optarg);
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) >= 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);
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