networkd-wait-online: drop config file and add commandline options instead

9 files changed, 105 insertions, 183 deletions

diff --git a/Makefile-man.am b/Makefile-man.am
index db66e020c0..60ee9917cd 100644
--- a/Makefile-man.am
+++ b/Makefile-man.am
@@ -1040,7 +1040,6 @@ if ENABLE_NETWORKD
 MANPAGES += \
 	man/systemd-networkd.service.8 \
 	man/systemd-networkd-wait-online.service.8 \
-	man/networkd-wait-online.conf.5 \
 	man/systemd.netdev.5 \
 	man/systemd.network.5
 MANPAGES_ALIAS += \
diff --git a/Makefile.am b/Makefile.am
index 1d37357a35..7f3924ff55 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4170,9 +4170,6 @@ systemd_networkd_wait_online_SOURCES = \
 	src/network/networkd-wait-online.c \
 	src/network/networkd-wait-online.h
 
-nodist_systemd_networkd_wait_online_SOURCES = \
-	src/network/networkd-wait-online-gperf.c
-
 systemd_networkd_wait_online_LDADD = \
 	libsystemd-internal.la \
 	libsystemd-network.la
@@ -4186,19 +4183,14 @@ test_network_LDADD = \
 tests += \
 	test-network
 
-dist_pkgsysconf_DATA += \
-	src/network/networkd-wait-online.conf
-
 EXTRA_DIST += \
 	src/network/networkd-network-gperf.gperf \
 	src/network/networkd-netdev-gperf.gperf \
-	src/network/networkd-wait-online-gperf.gperf \
 	units/systemd-networkd.service.in
 
 CLEANFILES += \
 	src/network/networkd-network-gperf.c \
-	src/network/networkd-netdev-gperf.c \
-	src/network/networkd-wait-online-gperf.c
+	src/network/networkd-netdev-gperf.c
 endif
 
 # ------------------------------------------------------------------------------
diff --git a/man/networkd-wait-online.conf.xml b/man/networkd-wait-online.conf.xml
deleted file mode 100644
index 821b0efedd..0000000000
--- a/man/networkd-wait-online.conf.xml
+++ /dev/null
@@ -1,95 +0,0 @@
-<?xml version='1.0'?> <!--*-nxml-*-->
-<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-        "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
-  This file is part of systemd.
-
-  Copyright 2014 Tom Gundersen
-
-  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/>.
--->
-
-<refentry id="networkd-wait-online.conf" conditional='ENABLE_NETWORKD'>
-        <refentryinfo>
-                <title>networkd-wait-online.conf</title>
-                <productname>systemd</productname>
-
-                <authorgroup>
-                        <author>
-                                <contrib>Developer</contrib>
-                                <firstname>Tom</firstname>
-                                <surname>Gundersen</surname>
-                                <email>teg@jklm.no</email>
-                        </author>
-                </authorgroup>
-        </refentryinfo>
-
-        <refmeta>
-                <refentrytitle>networkd-wait-online.conf</refentrytitle>
-                <manvolnum>5</manvolnum>
-        </refmeta>
-
-        <refnamediv>
-                <refname>networkd-wait-online.conf</refname>
-                <refpurpose>Network manager configuration file</refpurpose>
-        </refnamediv>
-
-        <refsynopsisdiv>
-                <para><filename>/etc/systemd/networkd-wait-online.conf</filename></para>
-        </refsynopsisdiv>
-
-        <refsect1>
-                <title>Description</title>
-
-                <para>This file configures various parameters of the systemd network manager's wait-online service, <citerefentry><refentrytitle>systemd-networkd-wait-online.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
-
-        </refsect1>
-
-        <refsect1>
-                <title>Options</title>
-
-                <para>All options are configured in the
-                <literal>[WaitOnline]</literal> section:</para>
-
-                <variablelist>
-
-                        <varlistentry>
-                                <term><varname>After=</varname></term>
-
-                                <listitem><para>Takes a white-space
-                                separated list of network interface
-                                names. Configures which network interfaces
-                                to wait for before deciding if the machine
-                                is considered to be online. The default is
-                                to wait for at least one that is managed by
-                                <citerefentry><refentrytitle>systemd-networkd.service
-                                </refentrytitle><manvolnum>8</manvolnum></citerefentry>,
-                                or one other which is brought up by someone else.
-                                </para></listitem>
-                        </varlistentry>
-
-                </variablelist>
-        </refsect1>
-
-        <refsect1>
-                  <title>See Also</title>
-                  <para>
-                          <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
-                          <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
-                  </para>
-        </refsect1>
-
-</refentry>
diff --git a/man/systemd-networkd-wait-online.service.xml b/man/systemd-networkd-wait-online.service.xml
index d8f2226552..c8190e1ab9 100644
--- a/man/systemd-networkd-wait-online.service.xml
+++ b/man/systemd-networkd-wait-online.service.xml
@@ -45,7 +45,7 @@
         <refnamediv>
                 <refname>systemd-networkd-wait-online.service</refname>
                 <refname>systemd-networkd-wait-online</refname>
-                <refpurpose>Wait for network to become online</refpurpose>
+                <refpurpose>Wait for network to come online</refpurpose>
         </refnamediv>
 
         <refsynopsisdiv>
@@ -58,22 +58,37 @@
 
                 <para><command>systemd-networkd-wait-online</command> is a
                 one-shot system service that waits for the network to be configured.
-                It will wait for all links managed by
+                By default it will wait for all links it is aware of that are managed by
                 <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
-                to be fully configured. It will wait for at least one link managed by
-                systemd-networkd to appear, or for a link to be brought up by someone else.
+                to be fully configured or failed, and for at least one link to gain a
+                carrier.</para>
+        </refsect1>
 
-                To wait for a specific set of links, see
-                <citerefentry><refentrytitle>systemd-networkd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
-                This may be necessary on systems with more than one active link.
-                </para>
+        <refsect1>
+                <title>Options</title>
+
+                <para>The following options are understood:</para>
+
+                <variablelist>
+                        <varlistentry>
+                                <term><option>-i</option></term>
+                                <term><option>--interface=</option></term>
+
+                                <listitem><para>Network interface to wait for
+                                before deciding if the system is online. This is
+                                useful when a system has several interfaces which
+                                will be configured, but a particular one is necessary
+                                to access some network resources. This option may be
+                                used more than once to wait for multiple network
+                                interfaces.</para></listitem>
+                        </varlistentry>
+                </variablelist>
         </refsect1>
 
         <refsect1>
                 <title>See Also</title>
                 <para>
                         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
-                        <citerefentry><refentrytitle>systemd-networkd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
                         <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
                 </para>
         </refsect1>
diff --git a/src/network/.gitignore b/src/network/.gitignore
index e3b86e2d4a..8858596489 100644
--- a/src/network/.gitignore
+++ b/src/network/.gitignore
@@ -1,3 +1,2 @@
 /networkd-network-gperf.c
 /networkd-netdev-gperf.c
-/networkd-wait-online-gperf.c
diff --git a/src/network/networkd-wait-online-gperf.gperf b/src/network/networkd-wait-online-gperf.gperf
deleted file mode 100644
index 0a5e5eee55..0000000000
--- a/src/network/networkd-wait-online-gperf.gperf
+++ /dev/null
@@ -1,17 +0,0 @@
-%{
-#include <stddef.h>
-#include "conf-parser.h"
-#include "networkd-wait-online.h"
-%}
-struct ConfigPerfItem;
-%null_strings
-%language=ANSI-C
-%define slot-name section_and_lvalue
-%define hash-function-name wait_online_gperf_hash
-%define lookup-function-name wait_online_gperf_lookup
-%readonly-tables
-%omit-struct-type
-%struct-type
-%includes
-%%
-WaitOnline.ExpectedLinks,               config_parse_strv,          0, offsetof(Manager, expected_links)
diff --git a/src/network/networkd-wait-online.c b/src/network/networkd-wait-online.c
index 6a7c62feae..6530659c10 100644
--- a/src/network/networkd-wait-online.c
+++ b/src/network/networkd-wait-online.c
@@ -21,6 +21,7 @@
 
 #include <netinet/ether.h>
 #include <linux/if.h>
+#include <getopt.h>
 
 #include "sd-event.h"
 #include "event-util.h"
@@ -35,6 +36,75 @@
 #include "conf-parser.h"
 #include "strv.h"
 #include "util.h"
+#include "build.h"
+
+static bool arg_quiet = false;
+static char **arg_interfaces = NULL;
+
+static int 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",
+               program_invocation_short_name);
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_VERSION = 0x100,
+        };
+
+        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'         },
+                {}
+        };
+
+        int c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "+hq", options, NULL)) >= 0) {
+
+                switch (c) {
+
+                case 'h':
+                        return help();
+
+                case 'q':
+                        arg_quiet = true;
+                        break;
+
+                case ARG_VERSION:
+                        puts(PACKAGE_STRING);
+                        puts(SYSTEMD_FEATURES);
+                        return 0;
+
+                case 'i':
+                        if (strv_extend(&arg_interfaces, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached("Unhandled option");
+                }
+        }
+
+        return 1;
+}
 
 static bool all_configured(Manager *m) {
         _cleanup_free_ unsigned *indices = NULL;
@@ -46,7 +116,7 @@ static bool all_configured(Manager *m) {
         if (n <= 0)
                 return false;
 
-        STRV_FOREACH(ifname, m->expected_links) {
+        STRV_FOREACH(ifname, arg_interfaces) {
                 _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL, *reply = NULL;
                 bool found = false;
                 int index;
@@ -91,7 +161,7 @@ static bool all_configured(Manager *m) {
                         }
                 }
 
-                if (!found)
+                if (!found) {
                         /* link exists, but networkd is not yet aware of it */
                         return false;
         }
@@ -139,6 +209,7 @@ static bool all_configured(Manager *m) {
 
                         continue;
                 } else if (r < 0 || !streq(state, "configured"))
+                        /* managed by networkd, but not yet configured */
                         return false;
 
                 /* we wait for at least one link to appear */
@@ -173,35 +244,12 @@ static int newlink_event_handler(sd_rtnl *rtnl, sd_rtnl_message *message, void *
         return 1;
 }
 
-static int parse_config_file(Manager *m) {
-        static const char fn[] = "/etc/systemd/networkd-wait-online.conf";
-        _cleanup_fclose_ FILE *f = NULL;
-        int r;
-
-        f = fopen(fn, "re");
-        if (!f) {
-                if (errno == ENOENT)
-                        return 0;
-
-                log_warning("Failed to open configuration file %s: %m", fn);
-                return -errno;
-        }
-
-        r = config_parse(NULL, fn, f, "WaitOnline\0", config_item_perf_lookup,
-                         (void*) wait_online_gperf_lookup, false, false, m);
-        if (r < 0)
-                log_warning("Failed to parse configuration file: %s", strerror(-r));
-
-        return r;
-}
-
 void manager_free(Manager *m) {
         if (!m)
                 return;
 
         sd_event_unref(m->event);
         sd_rtnl_unref(m->rtnl);
-        strv_free(m->expected_links);
 
         free(m);
 }
@@ -212,26 +260,22 @@ int main(int argc, char *argv[]) {
         _cleanup_network_monitor_unref_ sd_network_monitor *monitor = NULL;
         int r, fd, events;
 
-        log_set_target(LOG_TARGET_AUTO);
+        umask(0022);
+
         log_parse_environment();
         log_open();
 
-        umask(0022);
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r;
 
-        if (argc != 1) {
-                log_error("This program takes no arguments.");
-                r = -EINVAL;
-                goto out;
-        }
+        if (arg_quiet)
+                log_set_max_level(LOG_WARNING);
 
         m = new0(Manager, 1);
         if (!m)
                 return log_oom();
 
-        r = parse_config_file(m);
-        if (r < 0)
-                goto out;
-
         r = sd_network_monitor_new(NULL, &monitor);
         if (r < 0) {
                 log_error("Could not create monitor: %s", strerror(-r));
diff --git a/src/network/networkd-wait-online.conf b/src/network/networkd-wait-online.conf
deleted file mode 100644
index fa3d92fe69..0000000000
--- a/src/network/networkd-wait-online.conf
+++ /dev/null
@@ -1,11 +0,0 @@
-#  This file is part of systemd.
-#
-#  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.
-#
-# See networkd-wait-online.conf(5) for details
-
-[WaitOnline]
-#ExpectedLinks=
diff --git a/src/network/networkd-wait-online.h b/src/network/networkd-wait-online.h
index 463df1616c..91edce1f60 100644
--- a/src/network/networkd-wait-online.h
+++ b/src/network/networkd-wait-online.h
@@ -29,13 +29,9 @@
 typedef struct Manager {
         sd_event *event;
         sd_rtnl *rtnl;
-        char **expected_links;
 } Manager;
 
 void manager_free(Manager *m);
 
 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
 #define _cleanup_manager_free_ _cleanup_(manager_freep)
-
-/* gperf lookup function */
-const struct ConfigPerfItem* wait_online_gperf_lookup(const char *key, unsigned length);