diff options
Diffstat (limited to 'src/grp-initprogs/systemd-quotacheck')
5 files changed, 303 insertions, 0 deletions
diff --git a/src/grp-initprogs/systemd-quotacheck/Makefile b/src/grp-initprogs/systemd-quotacheck/Makefile new file mode 100644 index 0000000000..84c7204d38 --- /dev/null +++ b/src/grp-initprogs/systemd-quotacheck/Makefile @@ -0,0 +1,46 @@ +# -*- Mode: makefile; indent-tabs-mode: t -*- +# +# This file is part of systemd. +# +# Copyright 2010-2012 Lennart Poettering +# Copyright 2010-2012 Kay Sievers +# Copyright 2013 Zbigniew Jędrzejewski-Szmek +# Copyright 2013 David Strauss +# Copyright 2016 Luke Shumaker +# +# 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 $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk +include $(topsrcdir)/build-aux/Makefile.head.mk + +ifneq ($(ENABLE_QUOTACHECK),) +rootlibexec_PROGRAMS += \ + systemd-quotacheck + +nodist_systemunit_DATA += \ + units/systemd-quotacheck.service + +systemd_quotacheck_SOURCES = \ + src/quotacheck/quotacheck.c + +systemd_quotacheck_LDADD = \ + libsystemd-shared.la +endif # ENABLE_QUOTACHECK + +EXTRA_DIST += \ + units/systemd-quotacheck.service.in + +nodist_systemunit_DATA += \ + units/quotaon.service + +include $(topsrcdir)/build-aux/Makefile.tail.mk diff --git a/src/grp-initprogs/systemd-quotacheck/quotacheck.c b/src/grp-initprogs/systemd-quotacheck/quotacheck.c new file mode 100644 index 0000000000..7687354ad6 --- /dev/null +++ b/src/grp-initprogs/systemd-quotacheck/quotacheck.c @@ -0,0 +1,124 @@ +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + 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 <errno.h> +#include <stdbool.h> +#include <stdio.h> +#include <sys/prctl.h> +#include <unistd.h> + +#include "systemd-basic/proc-cmdline.h" +#include "systemd-basic/process-util.h" +#include "systemd-basic/signal-util.h" +#include "systemd-basic/string-util.h" +#include "systemd-basic/util.h" + +static bool arg_skip = false; +static bool arg_force = false; + +static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { + + if (streq(key, "quotacheck.mode") && value) { + + if (streq(value, "auto")) + arg_force = arg_skip = false; + else if (streq(value, "force")) + arg_force = true; + else if (streq(value, "skip")) + arg_skip = true; + else + log_warning("Invalid quotacheck.mode= parameter '%s'. Ignoring.", value); + } + +#ifdef HAVE_SYSV_COMPAT + else if (streq(key, "forcequotacheck") && !value) { + log_warning("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line."); + arg_force = true; + } +#endif + + return 0; +} + +static void test_files(void) { + +#ifdef HAVE_SYSV_COMPAT + if (access("/forcequotacheck", F_OK) >= 0) { + log_error("Please pass 'quotacheck.mode=force' on the kernel command line rather than creating /forcequotacheck on the root file system."); + arg_force = true; + } +#endif +} + +int main(int argc, char *argv[]) { + + static const char * const cmdline[] = { + QUOTACHECK, + "-anug", + NULL + }; + + pid_t pid; + int r; + + if (argc > 1) { + log_error("This program takes no arguments."); + return EXIT_FAILURE; + } + + log_set_target(LOG_TARGET_AUTO); + log_parse_environment(); + log_open(); + + umask(0022); + + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false); + if (r < 0) + log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); + + test_files(); + + if (!arg_force) { + if (arg_skip) + return EXIT_SUCCESS; + + if (access("/run/systemd/quotacheck", F_OK) < 0) + return EXIT_SUCCESS; + } + + pid = fork(); + if (pid < 0) { + log_error_errno(errno, "fork(): %m"); + return EXIT_FAILURE; + } else if (pid == 0) { + + /* Child */ + + (void) reset_all_signal_handlers(); + (void) reset_signal_mask(); + assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); + + execv(cmdline[0], (char**) cmdline); + _exit(1); /* Operational error */ + } + + r = wait_for_terminate_and_warn("quotacheck", pid, true); + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} diff --git a/src/grp-initprogs/systemd-quotacheck/quotaon.service.in b/src/grp-initprogs/systemd-quotacheck/quotaon.service.in new file mode 100644 index 0000000000..7d59a40195 --- /dev/null +++ b/src/grp-initprogs/systemd-quotacheck/quotaon.service.in @@ -0,0 +1,19 @@ +# 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. + +[Unit] +Description=Enable File System Quotas +Documentation=man:quotaon(8) +DefaultDependencies=no +After=systemd-quotacheck.service +Before=local-fs.target shutdown.target +ConditionPathExists=@QUOTAON@ + +[Service] +Type=oneshot +RemainAfterExit=yes +ExecStart=@QUOTAON@ -aug diff --git a/src/grp-initprogs/systemd-quotacheck/systemd-quotacheck.service.in b/src/grp-initprogs/systemd-quotacheck/systemd-quotacheck.service.in new file mode 100644 index 0000000000..5cb9bc3bc9 --- /dev/null +++ b/src/grp-initprogs/systemd-quotacheck/systemd-quotacheck.service.in @@ -0,0 +1,20 @@ +# 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. + +[Unit] +Description=File System Quota Check +Documentation=man:systemd-quotacheck.service(8) +DefaultDependencies=no +After=systemd-remount-fs.service +Before=local-fs.target shutdown.target +ConditionPathExists=@QUOTACHECK@ + +[Service] +Type=oneshot +RemainAfterExit=yes +ExecStart=@rootlibexecdir@/systemd-quotacheck +TimeoutSec=0 diff --git a/src/grp-initprogs/systemd-quotacheck/systemd-quotacheck.service.xml b/src/grp-initprogs/systemd-quotacheck/systemd-quotacheck.service.xml new file mode 100644 index 0000000000..9d4976274e --- /dev/null +++ b/src/grp-initprogs/systemd-quotacheck/systemd-quotacheck.service.xml @@ -0,0 +1,94 @@ +<?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 2012 Lennart Poettering + + 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-quotacheck.service" conditional='ENABLE_QUOTACHECK'> + + <refentryinfo> + <title>systemd-quotacheck.service</title> + <productname>systemd</productname> + + <authorgroup> + <author> + <contrib>Developer</contrib> + <firstname>Lennart</firstname> + <surname>Poettering</surname> + <email>lennart@poettering.net</email> + </author> + </authorgroup> + </refentryinfo> + + <refmeta> + <refentrytitle>systemd-quotacheck.service</refentrytitle> + <manvolnum>8</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd-quotacheck.service</refname> + <refname>systemd-quotacheck</refname> + <refpurpose>File system quota checker logic</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>systemd-quotacheck.service</filename></para> + <para><filename>/usr/lib/systemd/systemd-quotacheck</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><filename>systemd-quotacheck.service</filename> is a service + responsible for file system quota checks. It is run once at boot + after all necessary file systems are mounted. It is pulled in only + if at least one file system has quotas enabled.</para> + </refsect1> + + <refsect1> + <title>Kernel Command Line</title> + + <para><filename>systemd-quotacheck</filename> understands one + kernel command line parameter:</para> + + <variablelist class='kernel-commandline-options'> + <varlistentry> + <term><varname>quotacheck.mode=</varname></term> + + <listitem><para>One of <literal>auto</literal>, + <literal>force</literal>, <literal>skip</literal>. Controls + the mode of operation. The default is <literal>auto</literal>, + and ensures that file system quota checks are done when the + file system quota checker deems them necessary. + <literal>force</literal> unconditionally results in full file + system quota checks. <literal>skip</literal> skips any file + system quota checks.</para></listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry project='die-net'><refentrytitle>quotacheck</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |