summaryrefslogtreecommitdiff
path: root/src/grp-initprogs/systemd-modules-load
diff options
context:
space:
mode:
authorLuke Shumaker <lukeshu@sbcglobal.net>2016-11-29 21:33:01 -0500
committerLuke Shumaker <lukeshu@sbcglobal.net>2016-11-29 21:33:01 -0500
commit08ea146102377743cc6604876f6a66048bc7492a (patch)
tree593c4993f184c8842cf725fd5169cea86d673653 /src/grp-initprogs/systemd-modules-load
parent589b6c603023133deed24de8bdce1e244081ded7 (diff)
./tools/notsd-move
Diffstat (limited to 'src/grp-initprogs/systemd-modules-load')
-rw-r--r--src/grp-initprogs/systemd-modules-load/Makefile59
-rw-r--r--src/grp-initprogs/systemd-modules-load/kmod-static-nodes.service.in18
-rw-r--r--src/grp-initprogs/systemd-modules-load/modules-load.c283
-rw-r--r--src/grp-initprogs/systemd-modules-load/modules-load.d.xml101
-rw-r--r--src/grp-initprogs/systemd-modules-load/systemd-modules-load.service.in27
-rw-r--r--src/grp-initprogs/systemd-modules-load/systemd-modules-load.service.xml96
6 files changed, 584 insertions, 0 deletions
diff --git a/src/grp-initprogs/systemd-modules-load/Makefile b/src/grp-initprogs/systemd-modules-load/Makefile
new file mode 100644
index 0000000000..01ee557164
--- /dev/null
+++ b/src/grp-initprogs/systemd-modules-load/Makefile
@@ -0,0 +1,59 @@
+# -*- 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 $(topsrcdir)/build-aux/Makefile.head.mk
+
+ifneq ($(HAVE_KMOD),)
+systemd_modules_load_SOURCES = \
+ src/modules-load/modules-load.c
+
+systemd_modules_load_CFLAGS = \
+ $(KMOD_CFLAGS)
+
+systemd_modules_load_LDADD = \
+ libsystemd-shared.la \
+ $(KMOD_LIBS)
+
+rootlibexec_PROGRAMS += \
+ systemd-modules-load
+
+nodist_systemunit_DATA += \
+ units/systemd-modules-load.service
+
+SYSINIT_TARGET_WANTS += \
+ systemd-modules-load.service
+
+ifneq ($(ENABLE_TMPFILES),)
+nodist_systemunit_DATA += \
+ units/kmod-static-nodes.service
+
+SYSINIT_TARGET_WANTS += \
+ kmod-static-nodes.service
+endif # ENABLE_TMPFILES
+endif # HAVE_KMOD
+
+EXTRA_DIST += \
+ units/systemd-modules-load.service.in \
+ units/kmod-static-nodes.service.in
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/grp-initprogs/systemd-modules-load/kmod-static-nodes.service.in b/src/grp-initprogs/systemd-modules-load/kmod-static-nodes.service.in
new file mode 100644
index 0000000000..a9c8df1184
--- /dev/null
+++ b/src/grp-initprogs/systemd-modules-load/kmod-static-nodes.service.in
@@ -0,0 +1,18 @@
+# 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=Create list of required static device nodes for the current kernel
+DefaultDependencies=no
+Before=sysinit.target systemd-tmpfiles-setup-dev.service
+ConditionCapability=CAP_SYS_MODULE
+ConditionFileNotEmpty=/lib/modules/%v/modules.devname
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=@KMOD@ static-nodes --format=tmpfiles --output=/run/tmpfiles.d/kmod.conf
diff --git a/src/grp-initprogs/systemd-modules-load/modules-load.c b/src/grp-initprogs/systemd-modules-load/modules-load.c
new file mode 100644
index 0000000000..13f6ac529d
--- /dev/null
+++ b/src/grp-initprogs/systemd-modules-load/modules-load.c
@@ -0,0 +1,283 @@
+/***
+ 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 <getopt.h>
+#include <libkmod.h>
+#include <limits.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "systemd-basic/conf-files.h"
+#include "systemd-basic/def.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/fileio.h"
+#include "systemd-basic/log.h"
+#include "systemd-basic/proc-cmdline.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/strv.h"
+#include "systemd-basic/util.h"
+
+static char **arg_proc_cmdline_modules = NULL;
+
+static const char conf_file_dirs[] = CONF_PATHS_NULSTR("modules-load.d");
+
+static void systemd_kmod_log(void *data, int priority, const char *file, int line,
+ const char *fn, const char *format, va_list args) {
+
+ DISABLE_WARNING_FORMAT_NONLITERAL;
+ log_internalv(priority, 0, file, line, fn, format, args);
+ REENABLE_WARNING;
+}
+
+static int add_modules(const char *p) {
+ _cleanup_strv_free_ char **k = NULL;
+
+ k = strv_split(p, ",");
+ if (!k)
+ return log_oom();
+
+ if (strv_extend_strv(&arg_proc_cmdline_modules, k, true) < 0)
+ return log_oom();
+
+ return 0;
+}
+
+static int parse_proc_cmdline_item(const char *key, const char *value) {
+ int r;
+
+ if (STR_IN_SET(key, "modules-load", "rd.modules-load") && value) {
+ r = add_modules(value);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int load_module(struct kmod_ctx *ctx, const char *m) {
+ const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
+ struct kmod_list *itr, *modlist = NULL;
+ int r = 0;
+
+ log_debug("load: %s", m);
+
+ r = kmod_module_new_from_lookup(ctx, m, &modlist);
+ if (r < 0)
+ return log_error_errno(r, "Failed to lookup alias '%s': %m", m);
+
+ if (!modlist) {
+ log_error("Failed to find module '%s'", m);
+ return -ENOENT;
+ }
+
+ kmod_list_foreach(itr, modlist) {
+ struct kmod_module *mod;
+ int state, err;
+
+ mod = kmod_module_get_module(itr);
+ state = kmod_module_get_initstate(mod);
+
+ switch (state) {
+ case KMOD_MODULE_BUILTIN:
+ log_info("Module '%s' is builtin", kmod_module_get_name(mod));
+ break;
+
+ case KMOD_MODULE_LIVE:
+ log_debug("Module '%s' is already loaded", kmod_module_get_name(mod));
+ break;
+
+ default:
+ err = kmod_module_probe_insert_module(mod, probe_flags,
+ NULL, NULL, NULL, NULL);
+
+ if (err == 0)
+ log_info("Inserted module '%s'", kmod_module_get_name(mod));
+ else if (err == KMOD_PROBE_APPLY_BLACKLIST)
+ log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
+ else {
+ log_error_errno(err, "Failed to insert '%s': %m", kmod_module_get_name(mod));
+ r = err;
+ }
+ }
+
+ kmod_module_unref(mod);
+ }
+
+ kmod_module_unref_list(modlist);
+
+ return r;
+}
+
+static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) {
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ assert(ctx);
+ assert(path);
+
+ r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
+ if (r < 0) {
+ if (ignore_enoent && r == -ENOENT)
+ return 0;
+
+ return log_error_errno(r, "Failed to open %s, ignoring: %m", path);
+ }
+
+ log_debug("apply: %s", path);
+ for (;;) {
+ char line[LINE_MAX], *l;
+ int k;
+
+ if (!fgets(line, sizeof(line), f)) {
+ if (feof(f))
+ break;
+
+ return log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path);
+ }
+
+ l = strstrip(line);
+ if (!*l)
+ continue;
+ if (strchr(COMMENTS "\n", *l))
+ continue;
+
+ k = load_module(ctx, l);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ return r;
+}
+
+static void help(void) {
+ printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
+ "Loads statically configured kernel modules.\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,
+ };
+
+ 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:
+ return version();
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+
+ return 1;
+}
+
+int main(int argc, char *argv[]) {
+ int r, k;
+ struct kmod_ctx *ctx;
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+
+ log_set_target(LOG_TARGET_AUTO);
+ log_parse_environment();
+ log_open();
+
+ umask(0022);
+
+ r = parse_proc_cmdline(parse_proc_cmdline_item);
+ if (r < 0)
+ log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
+
+ ctx = kmod_new(NULL, NULL);
+ if (!ctx) {
+ log_error("Failed to allocate memory for kmod.");
+ goto finish;
+ }
+
+ kmod_load_resources(ctx);
+ kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
+
+ r = 0;
+
+ if (argc > optind) {
+ int i;
+
+ for (i = optind; i < argc; i++) {
+ k = apply_file(ctx, argv[i], false);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ } else {
+ _cleanup_strv_free_ char **files = NULL;
+ char **fn, **i;
+
+ STRV_FOREACH(i, arg_proc_cmdline_modules) {
+ k = load_module(ctx, *i);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
+ if (k < 0) {
+ log_error_errno(k, "Failed to enumerate modules-load.d files: %m");
+ if (r == 0)
+ r = k;
+ goto finish;
+ }
+
+ STRV_FOREACH(fn, files) {
+ k = apply_file(ctx, *fn, true);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+ }
+
+finish:
+ kmod_unref(ctx);
+ strv_free(arg_proc_cmdline_modules);
+
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}
diff --git a/src/grp-initprogs/systemd-modules-load/modules-load.d.xml b/src/grp-initprogs/systemd-modules-load/modules-load.d.xml
new file mode 100644
index 0000000000..4b722aa128
--- /dev/null
+++ b/src/grp-initprogs/systemd-modules-load/modules-load.d.xml
@@ -0,0 +1,101 @@
+<?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 2011 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="modules-load.d" conditional='HAVE_KMOD'
+ xmlns:xi="http://www.w3.org/2001/XInclude">
+
+ <refentryinfo>
+ <title>modules-load.d</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>modules-load.d</refentrytitle>
+ <manvolnum>5</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>modules-load.d</refname>
+ <refpurpose>Configure kernel modules to load at boot</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>/etc/modules-load.d/*.conf</filename></para>
+ <para><filename>/run/modules-load.d/*.conf</filename></para>
+ <para><filename>/usr/lib/modules-load.d/*.conf</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ reads files from the above directories which contain kernel
+ modules to load during boot in a static list. Each configuration
+ file is named in the style of
+ <filename>/etc/modules-load.d/<replaceable>program</replaceable>.conf</filename>.
+ Note that it is usually a better idea to rely on the automatic
+ module loading by PCI IDs, USB IDs, DMI IDs or similar triggers
+ encoded in the kernel modules themselves instead of static
+ configuration like this. In fact, most modern kernel modules are
+ prepared for automatic loading already.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Configuration Format</title>
+
+ <para>The configuration files should simply contain a list of
+ kernel module names to load, separated by newlines. Empty lines
+ and lines whose first non-whitespace character is # or ; are
+ ignored.</para>
+ </refsect1>
+
+ <xi:include href="standard-conf.xml" xpointer="confd" />
+
+ <refsect1>
+ <title>Example</title>
+ <example>
+ <title>/etc/modules-load.d/virtio-net.conf example:</title>
+
+ <programlisting># Load virtio-net.ko at boot
+virtio-net</programlisting>
+ </example>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-delta</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry project='man-pages'><refentrytitle>modprobe</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>
diff --git a/src/grp-initprogs/systemd-modules-load/systemd-modules-load.service.in b/src/grp-initprogs/systemd-modules-load/systemd-modules-load.service.in
new file mode 100644
index 0000000000..9de6d31349
--- /dev/null
+++ b/src/grp-initprogs/systemd-modules-load/systemd-modules-load.service.in
@@ -0,0 +1,27 @@
+# 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=Load Kernel Modules
+Documentation=man:systemd-modules-load.service(8) man:modules-load.d(5)
+DefaultDependencies=no
+Conflicts=shutdown.target
+Before=sysinit.target shutdown.target
+ConditionCapability=CAP_SYS_MODULE
+ConditionDirectoryNotEmpty=|/lib/modules-load.d
+ConditionDirectoryNotEmpty=|/usr/lib/modules-load.d
+ConditionDirectoryNotEmpty=|/usr/local/lib/modules-load.d
+ConditionDirectoryNotEmpty=|/etc/modules-load.d
+ConditionDirectoryNotEmpty=|/run/modules-load.d
+ConditionKernelCommandLine=|modules-load
+ConditionKernelCommandLine=|rd.modules-load
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=@rootlibexecdir@/systemd-modules-load
+TimeoutSec=90s
diff --git a/src/grp-initprogs/systemd-modules-load/systemd-modules-load.service.xml b/src/grp-initprogs/systemd-modules-load/systemd-modules-load.service.xml
new file mode 100644
index 0000000000..b25929b2e4
--- /dev/null
+++ b/src/grp-initprogs/systemd-modules-load/systemd-modules-load.service.xml
@@ -0,0 +1,96 @@
+<?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-modules-load.service" conditional='HAVE_KMOD'>
+
+ <refentryinfo>
+ <title>systemd-modules-load.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-modules-load.service</refentrytitle>
+ <manvolnum>8</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd-modules-load.service</refname>
+ <refname>systemd-modules-load</refname>
+ <refpurpose>Load kernel modules at boot</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>systemd-modules-load.service</filename></para>
+ <para><filename>/usr/lib/systemd/systemd-modules-load</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><filename>systemd-modules-load.service</filename> is an
+ early boot service that loads kernel modules based on static
+ configuration.</para>
+
+ <para>See
+ <citerefentry><refentrytitle>modules-load.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for information about the configuration of this service.</para>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Kernel Command Line</title>
+
+ <para><filename>systemd-modules-load.service</filename>
+ understands the following kernel command line parameters:</para>
+
+ <variablelist class='kernel-commandline-options'>
+
+ <varlistentry>
+ <term><varname>modules-load=</varname></term>
+ <term><varname>rd.modules-load=</varname></term>
+
+ <listitem><para>Takes a comma-separated list of kernel modules
+ to statically load during early boot. The option prefixed with
+ <literal>rd.</literal> is read by the initial RAM disk
+ only.</para></listitem>
+ </varlistentry>
+
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>modules-load.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ </para>
+ </refsect1>
+
+</refentry>