diff options
Diffstat (limited to 'src/grp-initprogs/systemd-binfmt')
| l--------- | src/grp-initprogs/systemd-binfmt/GNUmakefile | 1 | ||||
| -rw-r--r-- | src/grp-initprogs/systemd-binfmt/Makefile | 56 | ||||
| -rw-r--r-- | src/grp-initprogs/systemd-binfmt/binfmt.c | 203 | ||||
| -rw-r--r-- | src/grp-initprogs/systemd-binfmt/binfmt.d.xml | 101 | ||||
| -rw-r--r-- | src/grp-initprogs/systemd-binfmt/proc-sys-fs-binfmt_misc.automount | 18 | ||||
| -rw-r--r-- | src/grp-initprogs/systemd-binfmt/proc-sys-fs-binfmt_misc.mount | 17 | ||||
| -rw-r--r-- | src/grp-initprogs/systemd-binfmt/systemd-binfmt.service.in | 27 | ||||
| -rw-r--r-- | src/grp-initprogs/systemd-binfmt/systemd-binfmt.service.xml | 75 |
8 files changed, 498 insertions, 0 deletions
diff --git a/src/grp-initprogs/systemd-binfmt/GNUmakefile b/src/grp-initprogs/systemd-binfmt/GNUmakefile new file mode 120000 index 0000000000..95e5924740 --- /dev/null +++ b/src/grp-initprogs/systemd-binfmt/GNUmakefile @@ -0,0 +1 @@ +../../../GNUmakefile
\ No newline at end of file diff --git a/src/grp-initprogs/systemd-binfmt/Makefile b/src/grp-initprogs/systemd-binfmt/Makefile new file mode 100644 index 0000000000..d9e032d16d --- /dev/null +++ b/src/grp-initprogs/systemd-binfmt/Makefile @@ -0,0 +1,56 @@ +# -*- 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_BINFMT),) +systemd_binfmt_SOURCES = \ + src/binfmt/binfmt.c + +systemd_binfmt_LDADD = \ + libsystemd-shared.la + +rootlibexec_PROGRAMS += \ + systemd-binfmt + +dist_systemunit_DATA += \ + units/proc-sys-fs-binfmt_misc.automount \ + units/proc-sys-fs-binfmt_misc.mount + +nodist_systemunit_DATA += \ + units/systemd-binfmt.service + +INSTALL_DIRS += \ + $(prefix)/lib/binfmt.d \ + $(sysconfdir)/binfmt.d + +SYSINIT_TARGET_WANTS += \ + systemd-binfmt.service \ + proc-sys-fs-binfmt_misc.automount + +endif # ENABLE_BINFMT + +EXTRA_DIST += \ + units/systemd-binfmt.service.in + +include $(topsrcdir)/build-aux/Makefile.tail.mk diff --git a/src/grp-initprogs/systemd-binfmt/binfmt.c b/src/grp-initprogs/systemd-binfmt/binfmt.c new file mode 100644 index 0000000000..f569d117df --- /dev/null +++ b/src/grp-initprogs/systemd-binfmt/binfmt.c @@ -0,0 +1,203 @@ +/*** + 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 <limits.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "systemd-basic/alloc-util.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/string-util.h" +#include "systemd-basic/strv.h" +#include "systemd-basic/util.h" + +static const char conf_file_dirs[] = CONF_PATHS_NULSTR("binfmt.d"); + +static int delete_rule(const char *rule) { + _cleanup_free_ char *x = NULL, *fn = NULL; + char *e; + + assert(rule[0]); + + x = strdup(rule); + if (!x) + return log_oom(); + + e = strchrnul(x+1, x[0]); + *e = 0; + + fn = strappend("/proc/sys/fs/binfmt_misc/", x+1); + if (!fn) + return log_oom(); + + return write_string_file(fn, "-1", 0); +} + +static int apply_rule(const char *rule) { + int r; + + delete_rule(rule); + + r = write_string_file("/proc/sys/fs/binfmt_misc/register", rule, 0); + if (r < 0) + return log_error_errno(r, "Failed to add binary format: %m"); + + return 0; +} + +static int apply_file(const char *path, bool ignore_enoent) { + _cleanup_fclose_ FILE *f = NULL; + int r; + + 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 file '%s', ignoring: %m", path); + } + + log_debug("apply: %s", path); + for (;;) { + char l[LINE_MAX], *p; + int k; + + if (!fgets(l, sizeof(l), f)) { + if (feof(f)) + break; + + return log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path); + } + + p = strstrip(l); + if (!*p) + continue; + if (strchr(COMMENTS "\n", *p)) + continue; + + k = apply_rule(p); + if (k < 0 && r == 0) + r = k; + } + + return r; +} + +static void help(void) { + printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" + "Registers binary formats.\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; + + 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 = 0; + + if (argc > optind) { + int i; + + for (i = optind; i < argc; i++) { + k = apply_file(argv[i], false); + if (k < 0 && r == 0) + r = k; + } + } else { + _cleanup_strv_free_ char **files = NULL; + char **f; + + r = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs); + if (r < 0) { + log_error_errno(r, "Failed to enumerate binfmt.d files: %m"); + goto finish; + } + + /* Flush out all rules */ + write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", 0); + + STRV_FOREACH(f, files) { + k = apply_file(*f, true); + if (k < 0 && r == 0) + r = k; + } + } + +finish: + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} diff --git a/src/grp-initprogs/systemd-binfmt/binfmt.d.xml b/src/grp-initprogs/systemd-binfmt/binfmt.d.xml new file mode 100644 index 0000000000..5b63cfb4c3 --- /dev/null +++ b/src/grp-initprogs/systemd-binfmt/binfmt.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="binfmt.d" conditional='ENABLE_BINFMT' + xmlns:xi="http://www.w3.org/2001/XInclude"> + + <refentryinfo> + <title>binfmt.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>binfmt.d</refentrytitle> + <manvolnum>5</manvolnum> + </refmeta> + + <refnamediv> + <refname>binfmt.d</refname> + <refpurpose>Configure additional binary formats for + executables at boot</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>/etc/binfmt.d/*.conf</filename></para> + <para><filename>/run/binfmt.d/*.conf</filename></para> + <para><filename>/usr/lib/binfmt.d/*.conf</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para>At boot, + <citerefentry><refentrytitle>systemd-binfmt.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> + reads configuration files from the above directories to register + in the kernel additional binary formats for executables.</para> + </refsect1> + + <refsect1> + <title>Configuration Format</title> + + <para>Each file contains a list of binfmt_misc kernel binary + format rules. Consult <ulink + url="https://www.kernel.org/doc/Documentation/binfmt_misc.txt">binfmt_misc.txt</ulink> + for more information on registration of additional binary formats + and how to write rules.</para> + + <para>Empty lines and lines beginning with ; and # are ignored. + Note that this means you may not use ; and # as delimiter in + binary format rules.</para> + </refsect1> + + <xi:include href="standard-conf.xml" xpointer="confd" /> + + <refsect1> + <title>Example</title> + <example> + <title>/etc/binfmt.d/wine.conf example:</title> + + <programlisting># Start WINE on Windows executables +:DOSWin:M::MZ::/usr/bin/wine:</programlisting> + </example> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-binfmt.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-delta</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry project='die-net'><refentrytitle>wine</refentrytitle><manvolnum>8</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/src/grp-initprogs/systemd-binfmt/proc-sys-fs-binfmt_misc.automount b/src/grp-initprogs/systemd-binfmt/proc-sys-fs-binfmt_misc.automount new file mode 100644 index 0000000000..6be38937b1 --- /dev/null +++ b/src/grp-initprogs/systemd-binfmt/proc-sys-fs-binfmt_misc.automount @@ -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=Arbitrary Executable File Formats File System Automount Point +Documentation=https://www.kernel.org/doc/Documentation/binfmt_misc.txt +Documentation=http://www.freedesktop.org/wiki/Software/systemd/APIFileSystems +DefaultDependencies=no +Before=sysinit.target +ConditionPathExists=/proc/sys/fs/binfmt_misc/ +ConditionPathIsReadWrite=/proc/sys/ + +[Automount] +Where=/proc/sys/fs/binfmt_misc diff --git a/src/grp-initprogs/systemd-binfmt/proc-sys-fs-binfmt_misc.mount b/src/grp-initprogs/systemd-binfmt/proc-sys-fs-binfmt_misc.mount new file mode 100644 index 0000000000..8c7c386318 --- /dev/null +++ b/src/grp-initprogs/systemd-binfmt/proc-sys-fs-binfmt_misc.mount @@ -0,0 +1,17 @@ +# 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=Arbitrary Executable File Formats File System +Documentation=https://www.kernel.org/doc/Documentation/binfmt_misc.txt +Documentation=http://www.freedesktop.org/wiki/Software/systemd/APIFileSystems +DefaultDependencies=no + +[Mount] +What=binfmt_misc +Where=/proc/sys/fs/binfmt_misc +Type=binfmt_misc diff --git a/src/grp-initprogs/systemd-binfmt/systemd-binfmt.service.in b/src/grp-initprogs/systemd-binfmt/systemd-binfmt.service.in new file mode 100644 index 0000000000..d53073ee61 --- /dev/null +++ b/src/grp-initprogs/systemd-binfmt/systemd-binfmt.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=Set Up Additional Binary Formats +Documentation=man:systemd-binfmt.service(8) man:binfmt.d(5) +Documentation=https://www.kernel.org/doc/Documentation/binfmt_misc.txt +DefaultDependencies=no +Conflicts=shutdown.target +After=proc-sys-fs-binfmt_misc.automount +Before=sysinit.target shutdown.target +ConditionPathIsReadWrite=/proc/sys/ +ConditionDirectoryNotEmpty=|/lib/binfmt.d +ConditionDirectoryNotEmpty=|/usr/lib/binfmt.d +ConditionDirectoryNotEmpty=|/usr/local/lib/binfmt.d +ConditionDirectoryNotEmpty=|/etc/binfmt.d +ConditionDirectoryNotEmpty=|/run/binfmt.d + +[Service] +Type=oneshot +RemainAfterExit=yes +ExecStart=@rootlibexecdir@/systemd-binfmt +TimeoutSec=90s diff --git a/src/grp-initprogs/systemd-binfmt/systemd-binfmt.service.xml b/src/grp-initprogs/systemd-binfmt/systemd-binfmt.service.xml new file mode 100644 index 0000000000..cccfb49ca9 --- /dev/null +++ b/src/grp-initprogs/systemd-binfmt/systemd-binfmt.service.xml @@ -0,0 +1,75 @@ +<?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-binfmt.service" conditional='ENABLE_BINFMT'> + + <refentryinfo> + <title>systemd-binfmt.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-binfmt.service</refentrytitle> + <manvolnum>8</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd-binfmt.service</refname> + <refname>systemd-binfmt</refname> + <refpurpose>Configure additional binary formats for executables at boot</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>systemd-binfmt.service</filename></para> + <para><filename>/usr/lib/systemd/systemd-binfmt</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><filename>systemd-binfmt.service</filename> is an early boot + service that registers additional binary formats for executables + in the kernel.</para> + + <para>See + <citerefentry><refentrytitle>binfmt.d</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for information about the configuration of this service.</para> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>binfmt.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry project='die-net'><refentrytitle>wine</refentrytitle><manvolnum>8</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |