--- /dev/null
+<?xml version="1.0"?>
+<!--*-nxml-*-->
+<!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 2015 Canonical
+
+ 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="systemd-fsckd.service" xmlns:xi="http://www.w3.org/2001/XInclude">
+
+ <refentryinfo>
+ <title>systemd-fsckd.service</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Didier</firstname>
+ <surname>Roche</surname>
+ <email>didrocks@ubuntu.com</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd-fsckd.service</refentrytitle>
+ <manvolnum>8</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd-fsckd.service</refname>
+ <refname>systemd-fsckd.socket</refname>
+ <refname>systemd-fsckd</refname>
+ <refpurpose>File system check progress reporting</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>systemd-fsckd.service</filename></para>
+ <para><filename>systemd-fsckd.socket</filename></para>
+ <para><filename>/usr/lib/systemd/systemd-fsckd</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><filename>systemd-fsckd.service</filename> is a service responsible
+ for receiving file system check progress, and communicating some
+ consolidated data to console and plymouth (if running). It also handles
+ possible check cancellations.</para>
+
+ <para><command>systemd-fsckd</command> receives messages about file
+ system check progress from <command>fsck</command> through an
+ UNIX domain socket. It can display the progress of the least advanced
+ fsck as well as the total number of devices being checked in parallel
+ to the console. It will also send progress messages to plymouth.
+ Both the raw data and translated messages are sent, so compiled
+ plymouth themes can use the raw data to display custom messages, and
+ scripted themes, not supporting i18n, can display the translated
+ versions.</para>
+
+ <para><command>systemd-fsckd</command> will instruct plymouth to grab
+ Control+C keypresses. When the key is pressed, running checks will be
+ terminated. It will also cancel any newly connected fsck instances for
+ the lifetime of <filename>systemd-fsckd</filename>.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Protocol for communication with plymouth</title>
+
+ <para><filename>systemd-fsckd</filename> passes the
+ following messages to the theme:</para>
+
+ <para>Progress update, sent as a plymouth update message:
+ <literal>fsckd:<num_devices>:<progress>:<string></literal>
+ <variablelist>
+ <varlistentry>
+ <term><literal><num_devices></literal></term>
+ <listitem><para>the current number of devices
+ being checked (int)</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><literal><progress></literal></term>
+ <listitem><para>the current minimum percentage of
+ all devices being checking (float, from 0 to 100)</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><literal><string></literal></term>
+ <listitem><para>a translated message ready to be displayed
+ by the plymouth theme displaying the data above. It can be overridden
+ by themes supporting i18n.</para></listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+
+ <para>Cancel message, sent as a traditional plymouth message:
+ <literal>fsckd-cancel-msg:<string></literal>
+ <variablelist>
+ <varlistentry>
+ <term><literal><strings></literal></term>
+ <listitem><para>a translated string ready to be displayed
+ by the plymouth theme indicating that Control+C can be used to cancel
+ current checks. It can be overridden (matching only
+ <literal>fsckd-cancel-msg</literal> prefix)
+ by themes supporting i18n.</para></listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>The following options are understood:</para>
+
+ <variablelist>
+ <xi:include href="standard-options.xml" xpointer="help" />
+ <xi:include href="standard-options.xml" xpointer="version" />
+ </variablelist>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Exit status</title>
+
+ <para>On success, 0 is returned, a non-zero failure
+ code otherwise. Note that the daemon stays idle for
+ a while to accept new <filename>fsck</filename>
+ connections before exiting.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-fsck</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>fsck.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2015 Canonical
+
+ Author:
+ Didier Roche <didrocks@ubuntu.com>
+
+ 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 <errno.h>
+#include <libintl.h>
+#include <math.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#include "sd-daemon.h"
+#include "build.h"
+#include "constants.h"
+#include "sd-event.h"
+#include "log.h"
+#include "list.h"
+#include "macro.h"
+#include "socket-netlink.h"
+#include "socket-util.h"
+#include "fd-util.h"
+#include "string-util.h"
+#include "io-util.h"
+#include "alloc-util.h"
+#include "locale-util.h"
+#include "logarithm.h"
+
+#define FSCKD_SOCKET_PATH "/run/systemd/fsck.progress"
+#define IDLE_TIME_SECONDS 30
+#define PLYMOUTH_REQUEST_KEY "K\2\2\3"
+#define CLIENTS_MAX 128
+
+struct Manager;
+
+typedef struct Client {
+ struct Manager *manager;
+ char *device_name;
+ /* device id refers to "fd <fd>" until it gets a name as "device_name" */
+ char *device_id;
+
+ pid_t fsck_pid;
+ FILE *fsck_f;
+
+ size_t cur;
+ size_t max;
+ int pass;
+
+ double percent;
+
+ bool cancelled;
+ bool bad_input;
+
+ sd_event_source *event_source;
+
+ LIST_FIELDS(struct Client, clients);
+} Client;
+
+typedef struct Manager {
+ sd_event *event;
+
+ LIST_HEAD(Client, clients);
+ unsigned n_clients;
+
+ size_t clear;
+
+ int connection_fd;
+ sd_event_source *connection_event_source;
+
+ bool show_status_console;
+
+ double percent;
+ int numdevices;
+
+ int plymouth_fd;
+ sd_event_source *plymouth_event_source;
+ bool plymouth_cancel_sent;
+
+ bool cancel_requested;
+} Manager;
+
+static Client* client_free(Client *c);
+static Manager* manager_free(Manager *m);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Client*, client_free);
+DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
+
+static bool plymouth_running(void) {
+ return access("/run/plymouth/pid", F_OK) >= 0;
+}
+
+static int manager_write_console(Manager *m, const char *message) {
+ _cleanup_fclose_ FILE *console = NULL;
+ int l;
+ size_t j;
+
+ assert(m);
+
+ if (!m->show_status_console)
+ return 0;
+
+ /* Nothing to display, and nothing to clear: return now. */
+ if (message == NULL && m->clear == 0) {
+ return 0;
+ }
+
+ /* Reduce the SAK window by opening and closing console on every request */
+ console = fopen("/dev/console", "we");
+ if (!console)
+ return -errno;
+
+ if (message) {
+ fprintf(console, "\r%s\r%n", message, &l);
+ if (m->clear < (size_t)l)
+ m->clear = (size_t)l;
+ } else {
+ fputc('\r', console);
+ for (j = 0; j < m->clear; j++)
+ fputc(' ', console);
+ fputc('\r', console);
+ }
+ fflush(console);
+
+ return 0;
+}
+
+static double compute_percent(int pass, size_t cur, size_t max) {
+ /* Values stolen from e2fsck */
+
+ static const double pass_table[] = {
+ 0, 70, 90, 92, 95, 100
+ };
+
+ if (pass <= 0)
+ return 0.0;
+
+ if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0)
+ return 100.0;
+
+ return pass_table[pass-1] +
+ (pass_table[pass] - pass_table[pass-1]) *
+ (double) cur / max;
+}
+
+static int client_request_cancel(Client *c) {
+ assert(c);
+
+ if (c->cancelled)
+ return 0;
+
+ log_info("Request to cancel fsck for %s from fsckd", c->device_id);
+ if (kill(c->fsck_pid, SIGTERM) < 0) {
+ /* ignore the error and consider that cancel was sent if fsck just exited */
+ if (errno != ESRCH)
+ return log_error_errno(errno, "Cannot send cancel to fsck for %s: %m", c->device_id);
+ }
+
+ c->cancelled = true;
+ return 1;
+}
+
+static Client* client_free(Client *c) {
+ assert(c);
+
+ if (c->manager) {
+ LIST_REMOVE(clients, c->manager->clients, c);
+ c->manager->n_clients--;
+ }
+
+ sd_event_source_unref(c->event_source);
+ fclose(c->fsck_f);
+ if (c->device_name)
+ free(c->device_name);
+ if (c->device_id)
+ free(c->device_id);
+ return mfree(c);
+}
+
+static void manager_disconnect_plymouth(Manager *m) {
+ assert(m);
+
+ m->plymouth_event_source = sd_event_source_unref(m->plymouth_event_source);
+ m->plymouth_fd = safe_close(m->plymouth_fd);
+ m->plymouth_cancel_sent = false;
+}
+
+static int manager_plymouth_feedback_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
+ char buffer[6];
+ ssize_t l;
+
+ assert(m);
+
+ l = read(m->plymouth_fd, buffer, sizeof(buffer));
+ if (l < 0) {
+ log_warning_errno(errno, "Got error while reading from plymouth: %m");
+ manager_disconnect_plymouth(m);
+ return -errno;
+ }
+ if (l == 0) {
+ manager_disconnect_plymouth(m);
+ return 0;
+ }
+
+ if (l > 1 && buffer[0] == '\15')
+ log_error("Message update to plymouth wasn't delivered successfully");
+
+ /* the only answer support type we requested is a key interruption */
+ if (l > 2 && buffer[0] == '\2' && buffer[5] == '\3') {
+ m->cancel_requested = true;
+
+ /* cancel all connected clients */
+ LIST_FOREACH(clients, current, m->clients)
+ client_request_cancel(current);
+ }
+
+ return 0;
+}
+
+static int manager_connect_plymouth(Manager *m) {
+ union sockaddr_union sa = PLYMOUTH_SOCKET;
+ int r;
+
+ if (!plymouth_running())
+ return 0;
+
+ /* try to connect or reconnect if sending a message */
+ if (m->plymouth_fd >= 0)
+ return 1;
+
+ m->plymouth_fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0);
+ if (m->plymouth_fd < 0)
+ return log_warning_errno(errno, "Connection to plymouth socket failed: %m");
+
+ if (connect(m->plymouth_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
+ r = log_warning_errno(errno, "Couldn't connect to plymouth: %m");
+ goto fail;
+ }
+
+ r = sd_event_add_io(m->event, &m->plymouth_event_source, m->plymouth_fd, EPOLLIN, manager_plymouth_feedback_handler, m);
+ if (r < 0) {
+ log_warning_errno(r, "Can't listen to plymouth socket: %m");
+ goto fail;
+ }
+
+ return 1;
+
+fail:
+ manager_disconnect_plymouth(m);
+ return r;
+}
+
+static int plymouth_send_message(int plymouth_fd, const char *message, bool update) {
+ _cleanup_free_ char *packet = NULL;
+ int n;
+ char mode = 'M';
+
+ if (update)
+ mode = 'U';
+
+ if (asprintf(&packet, "%c\002%c%s%n", mode, (int) (strlen(message) + 1), message, &n) < 0)
+ return log_oom();
+
+ return loop_write(plymouth_fd, packet, n + 1, true);
+}
+
+static int manager_send_plymouth_message(Manager *m, const char *message) {
+ const char *plymouth_cancel_message = NULL, *l10n_cancel_message = NULL;
+ int r;
+
+ r = manager_connect_plymouth(m);
+ if (r < 0)
+ return r;
+ /* 0 means that plymouth isn't running, do not send any message yet */
+ else if (r == 0)
+ return 0;
+
+ if (!m->plymouth_cancel_sent) {
+
+ /* Indicate to plymouth that we listen to Ctrl+C */
+ r = loop_write(m->plymouth_fd, PLYMOUTH_REQUEST_KEY, sizeof(PLYMOUTH_REQUEST_KEY), true);
+ if (r < 0)
+ return log_warning_errno(r, "Can't send to plymouth cancel key: %m");
+
+ m->plymouth_cancel_sent = true;
+
+ l10n_cancel_message = _("Press Ctrl+C to cancel all filesystem checks in progress");
+ plymouth_cancel_message = strjoina("fsckd-cancel-msg:", l10n_cancel_message);
+
+ r = plymouth_send_message(m->plymouth_fd, plymouth_cancel_message, false);
+ if (r < 0)
+ log_warning_errno(r, "Can't send filesystem cancel message to plymouth: %m");
+
+ } else if (m->numdevices == 0) {
+
+ m->plymouth_cancel_sent = false;
+
+ r = plymouth_send_message(m->plymouth_fd, "", false);
+ if (r < 0)
+ log_warning_errno(r, "Can't clear plymouth filesystem cancel message: %m");
+ }
+
+ r = plymouth_send_message(m->plymouth_fd, message, true);
+ if (r < 0)
+ return log_warning_errno(r, "Couldn't send \"%s\" to plymouth: %m", message);
+
+ return 0;
+}
+
+static int manager_update_global_progress(Manager *m) {
+ _cleanup_free_ char *console_message = NULL;
+ _cleanup_free_ char *fsck_message = NULL;
+ int current_numdevices = 0, r;
+ double current_percent = 100;
+
+ /* get the overall percentage */
+ LIST_FOREACH(clients, current, m->clients) {
+ current_numdevices++;
+
+ /* right now, we only keep the minimum % of all fsckd processes. We could in the future trying to be
+ linear, but max changes and corresponds to the pass. We have all the informations into fsckd
+ already if we can treat that in a smarter way. */
+ current_percent = MIN(current_percent, current->percent);
+ }
+
+ /* update if there is anything user-visible to update */
+ if (fabs(current_percent - m->percent) > 0.001 || current_numdevices != m->numdevices) {
+ m->numdevices = current_numdevices;
+ m->percent = current_percent;
+
+ if (asprintf(&console_message,
+ ngettext("Checking in progress on %d disk (%3.1f%% complete)",
+ "Checking in progress on %d disks (%3.1f%% complete)", m->numdevices),
+ m->numdevices, m->percent) < 0)
+ return -ENOMEM;
+
+ if (asprintf(&fsck_message, "fsckd:%d:%3.1f:%s", m->numdevices, m->percent, console_message) < 0)
+ return -ENOMEM;
+
+ r = manager_write_console(m, console_message);
+ if (r < 0)
+ return r;
+
+ /* try to connect to plymouth and send message */
+ r = manager_send_plymouth_message(m, fsck_message);
+ if (r < 0)
+ return r;
+ }
+ return 0;
+}
+
+static int client_progress_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ Client *client = userdata;
+ char line[LINE_MAX];
+ Manager *m;
+
+ assert(client);
+ m = client->manager;
+
+ /* check first if we need to cancel this client */
+ if (m->cancel_requested)
+ client_request_cancel(client);
+
+ while (fgets(line, sizeof(line), client->fsck_f) != NULL) {
+ int pass;
+ size_t cur, max;
+ _cleanup_free_ char *device = NULL, *old_device_id = NULL;
+
+ if (sscanf(line, "%i %zu %zu %ms", &pass, &cur, &max, &device) == 4) {
+ if (!client->device_name) {
+ client->device_name = strdup(device);
+ if (!client->device_name) {
+ log_oom();
+ continue;
+ }
+ old_device_id = client->device_id;
+ client->device_id = strdup(device);
+ if (!client->device_id) {
+ log_oom();
+ client->device_id = old_device_id;
+ old_device_id = NULL;
+ continue;
+ }
+ }
+ client->pass = pass;
+ client->cur = cur;
+ client->max = max;
+ client->bad_input = false;
+ client->percent = compute_percent(client->pass, client->cur, client->max);
+ log_debug("Getting progress for %s (%zu, %zu, %d) : %3.1f%%", client->device_id,
+ client->cur, client->max, client->pass, client->percent);
+ } else {
+ if (errno == ENOMEM) {
+ log_oom();
+ continue;
+ }
+
+ /* if previous input was already garbage, kick it off from progress report */
+ if (client->bad_input) {
+ log_warning("Closing connection on incorrect input of fsck connection for %s", client->device_id);
+ client_free(client);
+ manager_update_global_progress(m);
+ return 0;
+ }
+ client->bad_input = true;
+ }
+
+ }
+
+ if (feof(client->fsck_f)) {
+ log_debug("Fsck client %s disconnected", client->device_id);
+ client_free(client);
+ }
+
+ manager_update_global_progress(m);
+ return 0;
+}
+
+static int manager_new_connection_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ _cleanup_(client_freep) Client *c = NULL;
+ _cleanup_close_ int new_fsck_fd = -1;
+ _cleanup_fclose_ FILE *new_fsck_f = NULL;
+ struct ucred ucred = {};
+ Manager *m = userdata;
+ int r;
+
+ assert(m);
+
+ /* Initialize and list new clients */
+ new_fsck_fd = accept4(m->connection_fd, NULL, NULL, SOCK_CLOEXEC|SOCK_NONBLOCK);
+ if (new_fsck_fd < 0) {
+ log_error_errno(errno, "Couldn't accept a new connection: %m");
+ return 0;
+ }
+
+ if (m->n_clients >= CLIENTS_MAX) {
+ log_error("Too many clients, refusing connection.");
+ return 0;
+ }
+
+
+ new_fsck_f = fdopen(new_fsck_fd, "r");
+ if (!new_fsck_f) {
+ log_error_errno(errno, "Couldn't fdopen new connection for fd %d: %m", new_fsck_fd);
+ return 0;
+ }
+ new_fsck_fd = -1;
+
+ r = getpeercred(fileno(new_fsck_f), &ucred);
+ if (r < 0) {
+ log_error_errno(r, "Couldn't get credentials for fsck: %m");
+ return 0;
+ }
+
+ c = new0(Client, 1);
+ if (!c) {
+ log_oom();
+ return 0;
+ }
+
+ c->fsck_pid = ucred.pid;
+ c->fsck_f = new_fsck_f;
+ new_fsck_f = NULL;
+
+ if (asprintf(&(c->device_id), "fd %d", fileno(c->fsck_f)) < 0) {
+ log_oom();
+ return 0;
+ }
+
+ r = sd_event_add_io(m->event, &c->event_source, fileno(c->fsck_f), EPOLLIN, client_progress_handler, c);
+ if (r < 0) {
+ log_oom();
+ return 0;
+ }
+
+ LIST_PREPEND(clients, m->clients, c);
+ m->n_clients++;
+ c->manager = m;
+
+ log_debug("New fsck client connected: %s", c->device_id);
+
+ /* only request the client to cancel now in case the request is dropped by the client (chance to recancel) */
+ if (m->cancel_requested)
+ client_request_cancel(c);
+
+ c = NULL;
+ return 0;
+}
+
+static Manager* manager_free(Manager *m) {
+ if (!m)
+ return NULL;
+
+ /* clear last line */
+ manager_write_console(m, NULL);
+
+ sd_event_source_unref(m->connection_event_source);
+ safe_close(m->connection_fd);
+
+ while (m->clients)
+ client_free(m->clients);
+
+ manager_disconnect_plymouth(m);
+
+ sd_event_unref(m->event);
+
+ return mfree(m);
+}
+
+static int manager_new(Manager **ret, int fd) {
+ _cleanup_(manager_freep) Manager *m = NULL;
+ int r;
+
+ assert(ret);
+
+ m = new0(Manager, 1);
+ if (!m)
+ return -ENOMEM;
+
+ m->plymouth_fd = -1;
+ m->connection_fd = fd;
+ m->percent = 100;
+
+ r = sd_event_default(&m->event);
+ if (r < 0)
+ return r;
+
+ if (access("/run/systemd/show-status", F_OK) >= 0)
+ m->show_status_console = true;
+
+ r = sd_event_add_io(m->event, &m->connection_event_source, fd, EPOLLIN, manager_new_connection_handler, m);
+ if (r < 0)
+ return r;
+
+ *ret = m;
+ m = NULL;
+
+ return 0;
+}
+
+static int run_event_loop_with_timeout(Manager *m, usec_t timeout) {
+ int r, code;
+ sd_event *e = m->event;
+
+ assert(e);
+
+ for (;;) {
+ r = sd_event_get_state(e);
+ if (r < 0)
+ return r;
+ if (r == SD_EVENT_FINISHED)
+ break;
+
+ r = sd_event_run(e, timeout);
+ if (r < 0)
+ return r;
+
+ /* Exit if we reached the idle timeout and no more clients are
+ connected. If there is still an fsck process running but
+ simply slow to send us progress updates, exiting would mean
+ that this fsck process receives SIGPIPE resulting in an
+ aborted file system check. */
+ if (r == 0 && m->n_clients == 0) {
+ sd_event_exit(e, 0);
+ break;
+ }
+ }
+
+ r = sd_event_get_exit_code(e, &code);
+ if (r < 0)
+ return r;
+
+ return code;
+}
+
+static void help(void) {
+ printf("%s [OPTIONS...]\n\n"
+ "Capture fsck progress and forward one stream to plymouth\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n",
+ program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_ROOT,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ {}
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ version();
+ return 0;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached();
+ }
+
+ if (optind < argc) {
+ log_error("Extraneous arguments");
+ return -EINVAL;
+ }
+
+ return 1;
+}
+
+int main(int argc, char *argv[]) {
+ _cleanup_(manager_freep) Manager *m = NULL;
+ int fd = -1;
+ int r, n;
+
+ log_set_target(LOG_TARGET_AUTO);
+ log_parse_environment();
+ log_open();
+ init_gettext();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ n = sd_listen_fds(0);
+ if (n > 1) {
+ log_error("Too many file descriptors received.");
+ r = -EINVAL;
+ goto finish;
+ } else if (n == 1)
+ fd = SD_LISTEN_FDS_START + 0;
+ else {
+ fd = make_socket_fd(LOG_DEBUG, FSCKD_SOCKET_PATH, SOCK_STREAM, SOCK_CLOEXEC);
+ if (fd < 0) {
+ r = log_error_errno(fd, "Couldn't create listening socket fd on %s: %m", FSCKD_SOCKET_PATH);
+ goto finish;
+ }
+ }
+
+ r = manager_new(&m, fd);
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate manager: %m");
+ goto finish;
+ }
+
+ r = run_event_loop_with_timeout(m, IDLE_TIME_SECONDS * USEC_PER_SEC);
+ if (r < 0) {
+ log_error_errno(r, "Failed to run event loop: %m");
+ goto finish;
+ }
+
+ sd_event_get_exit_code(m->event, &r);
+
+finish:
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}
projects / systemd.git / commitdiff