mountfsd: add new systemd-mountfsd component
This commit is contained in:
Lennart Poettering
@@ -0,0 +1,70 @@
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<?xml version="1.0" encoding="UTF-8"?> <!--*-nxml-*-->
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<!DOCTYPE policyconfig PUBLIC "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
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"https://www.freedesktop.org/standards/PolicyKit/1/policyconfig.dtd">
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<!--
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SPDX-License-Identifier: LGPL-2.1-or-later
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This file is part of systemd.
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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-->
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<policyconfig>
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<vendor>The systemd Project</vendor>
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<vendor_url>https://systemd.io</vendor_url>
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<!-- Allow mounting DDIs into the host user namespace -->
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<action id="io.systemd.mount-file-system.mount-image">
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<!-- This action is generally checked first: we'll first try to mount the image with
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signature checks on. If that fails, we'll retry with the untrusted action below. -->
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<description gettext-domain="systemd">Allow mounting of file system image</description>
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<message gettext-domain="systemd">Authentication is required for an application to mount a file system image.</message>
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<defaults>
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<allow_any>auth_admin_keep</allow_any>
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<allow_inactive>auth_admin_keep</allow_inactive>
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<allow_active>yes</allow_active>
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</defaults>
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</action>
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<action id="io.systemd.mount-file-system.mount-untrusted-image">
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<!-- If the image cannot be mounted via the regular action because it is not signed by a
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recognized key, we'll try this action. -->
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<description gettext-domain="systemd">Allow mounting of untrusted file system image</description>
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<message gettext-domain="systemd">Authentication is required for an application to mount a cryptographically unsigned file system image or an image whose cryptographic signature is not recognized.</message>
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<defaults>
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<allow_any>auth_admin</allow_any>
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<allow_inactive>auth_admin</allow_inactive>
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<allow_active>auth_admin</allow_active>
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</defaults>
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<annotate key="org.freedesktop.policykit.imply">io.systemd.mount-file-system.mount-image</annotate>
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</action>
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<!-- Allow mounting DDIs into a private user namespace -->
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<action id="io.systemd.mount-file-system.mount-image-privately">
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<description gettext-domain="systemd">Allow private mounting of trusted file system image</description>
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<message gettext-domain="systemd">Authentication is required for an application to privately mount a file system image or an image whose cryptographic signature is recognized.</message>
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<defaults>
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<allow_any>yes</allow_any>
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<allow_inactive>yes</allow_inactive>
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<allow_active>yes</allow_active>
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</defaults>
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</action>
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<action id="io.systemd.mount-file-system.mount-untrusted-image-privately">
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<description gettext-domain="systemd">Allow private mounting of untrusted file system image</description>
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<message gettext-domain="systemd">Authentication is required for an application to privately mount a cryptographically unsigned file system image or an image whose cryptographic signature is not recognized.</message>
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<defaults>
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<allow_any>auth_admin</allow_any>
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<allow_inactive>auth_admin</allow_inactive>
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<allow_active>auth_admin</allow_active>
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</defaults>
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<annotate key="org.freedesktop.policykit.imply">io.systemd.mount-file-system.mount-image-privately</annotate>
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</action>
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</policyconfig>
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@@ -0,0 +1,28 @@
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# SPDX-License-Identifier: LGPL-2.1-or-later
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systemd_mountwork_sources = files(
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'mountwork.c',
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)
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systemd_mountfsd_sources = files(
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'mountfsd.c',
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'mountfsd-manager.c',
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)
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executables += [
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libexec_template + {
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'name' : 'systemd-mountfsd',
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'conditions' : ['ENABLE_MOUNTFSD'],
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'sources' : systemd_mountfsd_sources,
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},
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libexec_template + {
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'name' : 'systemd-mountwork',
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'conditions' : ['ENABLE_MOUNTFSD'],
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'sources' : systemd_mountwork_sources,
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'link_with' : common_libs,
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'dependencies' : common_deps,
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},
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]
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install_data('io.systemd.mount-file-system.policy',
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install_dir : polkitpolicydir)
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@@ -0,0 +1,277 @@
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <sys/wait.h>
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#include "sd-daemon.h"
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#include "build-path.h"
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#include "common-signal.h"
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#include "env-util.h"
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#include "fd-util.h"
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#include "fs-util.h"
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#include "mkdir.h"
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#include "mountfsd-manager.h"
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#include "process-util.h"
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#include "set.h"
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#include "signal-util.h"
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#include "socket-util.h"
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#include "stdio-util.h"
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#include "umask-util.h"
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#define LISTEN_TIMEOUT_USEC (25 * USEC_PER_SEC)
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static int start_workers(Manager *m, bool explicit_request);
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static size_t manager_current_workers(Manager *m) {
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assert(m);
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return set_size(m->workers_fixed) + set_size(m->workers_dynamic);
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}
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static int on_worker_exit(sd_event_source *s, const siginfo_t *si, void *userdata) {
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Manager *m = ASSERT_PTR(userdata);
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assert(s);
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assert_se(!set_remove(m->workers_dynamic, s) != !set_remove(m->workers_fixed, s));
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sd_event_source_disable_unref(s);
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if (si->si_code == CLD_EXITED) {
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if (si->si_status == EXIT_SUCCESS)
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log_debug("Worker " PID_FMT " exited successfully.", si->si_pid);
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else
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log_warning("Worker " PID_FMT " died with a failure exit status %i, ignoring.", si->si_pid, si->si_status);
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} else if (si->si_code == CLD_KILLED)
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log_warning("Worker " PID_FMT " was killed by signal %s, ignoring.", si->si_pid, signal_to_string(si->si_status));
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else if (si->si_code == CLD_DUMPED)
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log_warning("Worker " PID_FMT " dumped core by signal %s, ignoring.", si->si_pid, signal_to_string(si->si_status));
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else
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log_warning("Got unexpected exit code via SIGCHLD, ignoring.");
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(void) start_workers(m, /* explicit_request= */ false); /* Fill up workers again if we fell below the low watermark */
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return 0;
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}
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static int on_sigusr2(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
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Manager *m = ASSERT_PTR(userdata);
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(void) start_workers(m, /* explicit_request= */ true); /* Workers told us there's more work, let's add one more worker as long as we are below the high watermark */
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return 0;
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}
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DEFINE_PRIVATE_HASH_OPS_WITH_KEY_DESTRUCTOR(
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event_source_hash_ops,
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sd_event_source,
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(void (*)(const sd_event_source*, struct siphash*)) trivial_hash_func,
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(int (*)(const sd_event_source*, const sd_event_source*)) trivial_compare_func,
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sd_event_source_disable_unref);
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int manager_new(Manager **ret) {
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_cleanup_(manager_freep) Manager *m = NULL;
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int r;
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m = new(Manager, 1);
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if (!m)
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return -ENOMEM;
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*m = (Manager) {
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.listen_fd = -EBADF,
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.worker_ratelimit = {
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.interval = 5 * USEC_PER_SEC,
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.burst = 50,
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},
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};
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r = sd_event_new(&m->event);
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if (r < 0)
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return r;
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r = sd_event_set_signal_exit(m->event, true);
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if (r < 0)
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return r;
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r = sd_event_add_signal(m->event, NULL, (SIGRTMIN+18)|SD_EVENT_SIGNAL_PROCMASK, sigrtmin18_handler, NULL);
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if (r < 0)
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return r;
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r = sd_event_add_memory_pressure(m->event, NULL, NULL, NULL);
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if (r < 0)
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log_debug_errno(r, "Failed allocate memory pressure event source, ignoring: %m");
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r = sd_event_set_watchdog(m->event, true);
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if (r < 0)
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log_debug_errno(r, "Failed to enable watchdog handling, ignoring: %m");
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r = sd_event_add_signal(m->event, NULL, SIGUSR2|SD_EVENT_SIGNAL_PROCMASK, on_sigusr2, m);
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if (r < 0)
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return r;
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*ret = TAKE_PTR(m);
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return 0;
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}
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Manager* manager_free(Manager *m) {
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if (!m)
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return NULL;
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set_free(m->workers_fixed);
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set_free(m->workers_dynamic);
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/* Note: we rely on PR_DEATHSIG to kill the workers for us */
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sd_event_unref(m->event);
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return mfree(m);
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}
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static int start_one_worker(Manager *m) {
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_cleanup_(sd_event_source_disable_unrefp) sd_event_source *source = NULL;
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bool fixed;
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pid_t pid;
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int r;
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assert(m);
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fixed = set_size(m->workers_fixed) < MOUNTFS_WORKERS_MIN;
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r = safe_fork_full(
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"(sd-worker)",
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/* stdio_fds= */ NULL,
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&m->listen_fd, 1,
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FORK_RESET_SIGNALS|FORK_DEATHSIG_SIGTERM|FORK_REOPEN_LOG|FORK_LOG|FORK_CLOSE_ALL_FDS,
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&pid);
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if (r < 0)
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return log_error_errno(r, "Failed to fork new worker child: %m");
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if (r == 0) {
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char pids[DECIMAL_STR_MAX(pid_t)];
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/* Child */
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if (m->listen_fd == 3) {
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r = fd_cloexec(3, false);
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if (r < 0) {
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log_error_errno(r, "Failed to turn off O_CLOEXEC for fd 3: %m");
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_exit(EXIT_FAILURE);
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}
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} else {
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if (dup2(m->listen_fd, 3) < 0) { /* dup2() creates with O_CLOEXEC off */
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log_error_errno(errno, "Failed to move listen fd to 3: %m");
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_exit(EXIT_FAILURE);
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}
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safe_close(m->listen_fd);
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}
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xsprintf(pids, PID_FMT, pid);
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if (setenv("LISTEN_PID", pids, 1) < 0) {
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log_error_errno(errno, "Failed to set $LISTEN_PID: %m");
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_exit(EXIT_FAILURE);
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}
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if (setenv("LISTEN_FDS", "1", 1) < 0) {
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log_error_errno(errno, "Failed to set $LISTEN_FDS: %m");
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_exit(EXIT_FAILURE);
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}
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if (setenv("MOUNTFS_FIXED_WORKER", one_zero(fixed), 1) < 0) {
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log_error_errno(errno, "Failed to set $MOUNTFS_FIXED_WORKER: %m");
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_exit(EXIT_FAILURE);
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}
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r = setenv_systemd_log_level();
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if (r < 0) {
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log_error_errno(r, "Failed to set $SYSTEMD_LOG_LEVEL: %m");
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_exit(EXIT_FAILURE);
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}
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r = invoke_callout_binary(SYSTEMD_MOUNTWORK_PATH, STRV_MAKE("systemd-mountwork", "xxxxxxxxxxxxxxxx")); /* With some extra space rename_process() can make use of */
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log_error_errno(r, "Failed start worker process: %m");
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_exit(EXIT_FAILURE);
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}
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r = sd_event_add_child(m->event, &source, pid, WEXITED, on_worker_exit, m);
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if (r < 0)
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return log_error_errno(r, "Failed to watch child " PID_FMT ": %m", pid);
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r = set_ensure_put(
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fixed ? &m->workers_fixed : &m->workers_dynamic,
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&event_source_hash_ops,
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source);
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if (r < 0)
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return log_error_errno(r, "Failed to add child process to set: %m");
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TAKE_PTR(source);
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return 0;
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}
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static int start_workers(Manager *m, bool explicit_request) {
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int r;
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assert(m);
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for (;;) {
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size_t n;
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n = manager_current_workers(m);
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log_debug("%zu workers running.", n);
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if (n >= MOUNTFS_WORKERS_MIN && (!explicit_request || n >= MOUNTFS_WORKERS_MAX))
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break;
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if (!ratelimit_below(&m->worker_ratelimit)) {
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/* If we keep starting workers too often, let's fail the whole daemon, something is wrong */
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sd_event_exit(m->event, EXIT_FAILURE);
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return log_error_errno(SYNTHETIC_ERRNO(EUCLEAN), "Worker threads requested too frequently, something is wrong.");
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}
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r = start_one_worker(m);
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if (r < 0)
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return r;
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explicit_request = false;
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}
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return 0;
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}
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int manager_startup(Manager *m) {
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int n;
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assert(m);
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assert(m->listen_fd < 0);
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n = sd_listen_fds(false);
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if (n < 0)
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return log_error_errno(n, "Failed to determine number of passed file descriptors: %m");
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if (n > 1)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Expected one listening fd, got %i.", n);
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if (n == 1)
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m->listen_fd = SD_LISTEN_FDS_START;
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else {
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static const union sockaddr_union sockaddr = {
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.un.sun_family = AF_UNIX,
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.un.sun_path = "/run/systemd/io.systemd.MountFileSystem",
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};
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m->listen_fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0);
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if (m->listen_fd < 0)
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return log_error_errno(errno, "Failed to bind on socket: %m");
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(void) sockaddr_un_unlink(&sockaddr.un);
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WITH_UMASK(0000)
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if (bind(m->listen_fd, &sockaddr.sa, SOCKADDR_UN_LEN(sockaddr.un)) < 0)
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return log_error_errno(errno, "Failed to bind socket: %m");
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if (listen(m->listen_fd, SOMAXCONN) < 0)
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return log_error_errno(errno, "Failed to listen on socket: %m");
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}
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/* Let's make sure every accept() call on this socket times out after 25s. This allows workers to be
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* GC'ed on idle */
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if (setsockopt(m->listen_fd, SOL_SOCKET, SO_RCVTIMEO, TIMEVAL_STORE(LISTEN_TIMEOUT_USEC), sizeof(struct timeval)) < 0)
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return log_error_errno(errno, "Failed to se SO_RCVTIMEO: %m");
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return start_workers(m, /* explicit_request= */ false);
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}
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@@ -0,0 +1,30 @@
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "sd-bus.h"
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#include "sd-event.h"
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typedef struct Manager Manager;
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#include "hashmap.h"
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#include "ratelimit.h"
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#define MOUNTFS_WORKERS_MIN 3
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#define MOUNTFS_WORKERS_MAX 4096
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struct Manager {
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sd_event *event;
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Set *workers_fixed; /* Workers 0…MOUNTFS_WORKERS_MIN */
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Set *workers_dynamic; /* Workers MOUNTFS_WORKERS_MIN+1…MOUNTFS_WORKERS_MAX */
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int listen_fd;
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RateLimit worker_ratelimit;
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};
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int manager_new(Manager **ret);
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Manager* manager_free(Manager *m);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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int manager_startup(Manager *m);
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@@ -0,0 +1,43 @@
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "daemon-util.h"
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#include "log.h"
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#include "main-func.h"
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#include "mountfsd-manager.h"
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#include "signal-util.h"
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static int run(int argc, char *argv[]) {
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_unused_ _cleanup_(notify_on_cleanup) const char *notify_stop = NULL;
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_cleanup_(manager_freep) Manager *m = NULL;
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int r;
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log_setup();
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umask(0022);
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if (argc != 1)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments.");
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assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD) >= 0);
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r = manager_new(&m);
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if (r < 0)
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return log_error_errno(r, "Could not create manager: %m");
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r = manager_startup(m);
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if (r < 0)
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return log_error_errno(r, "Failed to start up daemon: %m");
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notify_stop = notify_start(NOTIFY_READY, NOTIFY_STOPPING);
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r = sd_event_loop(m->event);
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if (r < 0)
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return log_error_errno(r, "Event loop failed: %m");
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||||
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return 0;
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||||
}
|
||||
|
||||
DEFINE_MAIN_FUNCTION(run);
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||||
@@ -0,0 +1,703 @@
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||||
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
||||
|
||||
#include "sd-daemon.h"
|
||||
|
||||
#include "argv-util.h"
|
||||
#include "bus-polkit.h"
|
||||
#include "chase.h"
|
||||
#include "discover-image.h"
|
||||
#include "dissect-image.h"
|
||||
#include "env-util.h"
|
||||
#include "errno-util.h"
|
||||
#include "fd-util.h"
|
||||
#include "io-util.h"
|
||||
#include "main-func.h"
|
||||
#include "missing_loop.h"
|
||||
#include "namespace-util.h"
|
||||
#include "nsresource.h"
|
||||
#include "nulstr-util.h"
|
||||
#include "os-util.h"
|
||||
#include "process-util.h"
|
||||
#include "stat-util.h"
|
||||
#include "user-util.h"
|
||||
#include "varlink.h"
|
||||
#include "varlink-io.systemd.MountFileSystem.h"
|
||||
|
||||
#define ITERATIONS_MAX 64U
|
||||
#define RUNTIME_MAX_USEC (5 * USEC_PER_MINUTE)
|
||||
#define PRESSURE_SLEEP_TIME_USEC (50 * USEC_PER_MSEC)
|
||||
#define LISTEN_IDLE_USEC (90 * USEC_PER_SEC)
|
||||
|
||||
static const ImagePolicy image_policy_untrusted = {
|
||||
.n_policies = 2,
|
||||
.policies = {
|
||||
{ PARTITION_ROOT, PARTITION_POLICY_SIGNED|PARTITION_POLICY_ABSENT },
|
||||
{ PARTITION_USR, PARTITION_POLICY_SIGNED|PARTITION_POLICY_ABSENT },
|
||||
},
|
||||
.default_flags = PARTITION_POLICY_IGNORE,
|
||||
};
|
||||
|
||||
static int json_dispatch_image_policy(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
|
||||
_cleanup_(image_policy_freep) ImagePolicy *q = NULL;
|
||||
ImagePolicy **p = ASSERT_PTR(userdata);
|
||||
int r;
|
||||
|
||||
assert(p);
|
||||
|
||||
if (json_variant_is_null(variant)) {
|
||||
*p = image_policy_free(*p);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!json_variant_is_string(variant))
|
||||
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
|
||||
|
||||
r = image_policy_from_string(json_variant_string(variant), &q);
|
||||
if (r < 0)
|
||||
return json_log(variant, flags, r, "JSON field '%s' is not a valid image policy.", strna(name));
|
||||
|
||||
image_policy_free(*p);
|
||||
*p = TAKE_PTR(q);
|
||||
return 0;
|
||||
}
|
||||
|
||||
typedef struct MountImageParameters {
|
||||
unsigned image_fd_idx;
|
||||
unsigned userns_fd_idx;
|
||||
int read_only;
|
||||
int growfs;
|
||||
char *password;
|
||||
ImagePolicy *image_policy;
|
||||
} MountImageParameters;
|
||||
|
||||
static void mount_image_parameters_done(MountImageParameters *p) {
|
||||
assert(p);
|
||||
|
||||
p->password = erase_and_free(p->password);
|
||||
p->image_policy = image_policy_free(p->image_policy);
|
||||
}
|
||||
|
||||
static int validate_image_fd(int fd, MountImageParameters *p) {
|
||||
int r, fl;
|
||||
|
||||
assert(fd >= 0);
|
||||
assert(p);
|
||||
|
||||
r = fd_verify_regular(fd);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
fl = fd_verify_safe_flags(fd);
|
||||
if (fl < 0)
|
||||
return log_debug_errno(fl, "Image file descriptor has unsafe flags set: %m");
|
||||
|
||||
switch (fl & O_ACCMODE) {
|
||||
|
||||
case O_RDONLY:
|
||||
p->read_only = true;
|
||||
break;
|
||||
|
||||
case O_RDWR:
|
||||
break;
|
||||
|
||||
default:
|
||||
return -EBADF;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int verify_trusted_image_fd_by_path(int fd) {
|
||||
_cleanup_free_ char *p = NULL;
|
||||
struct stat sta;
|
||||
int r;
|
||||
|
||||
assert(fd >= 0);
|
||||
|
||||
r = secure_getenv_bool("SYSTEMD_MOUNTFSD_TRUSTED_DIRECTORIES");
|
||||
if (r == -ENXIO) {
|
||||
if (!DEFAULT_MOUNTFSD_TRUSTED_DIRECTORIES) {
|
||||
log_debug("Trusted directory mechanism disabled at compile time.");
|
||||
return false;
|
||||
}
|
||||
} else if (r < 0) {
|
||||
log_debug_errno(r, "Failed to parse $SYSTEMD_MOUNTFSD_TRUSTED_DIRECTORIES environment variable, not trusting any image.");
|
||||
return false;
|
||||
} else if (!r) {
|
||||
log_debug("Trusted directory mechanism disabled via $SYSTEMD_MOUNTFSD_TRUSTED_DIRECTORIES environment variable.");
|
||||
return false;
|
||||
}
|
||||
|
||||
r = fd_get_path(fd, &p);
|
||||
if (r < 0)
|
||||
return log_debug_errno(r, "Failed to get path of passed image file descriptor: %m");
|
||||
if (fstat(fd, &sta) < 0)
|
||||
return log_debug_errno(errno, "Failed to stat() passed image file descriptor: %m");
|
||||
|
||||
log_debug("Checking if image '%s' is in trusted directories.", p);
|
||||
|
||||
for (ImageClass c = 0; c < _IMAGE_CLASS_MAX; c++)
|
||||
NULSTR_FOREACH(s, image_search_path[c]) {
|
||||
_cleanup_close_ int dir_fd = -EBADF, inode_fd = -EBADF;
|
||||
_cleanup_free_ char *q = NULL;
|
||||
struct stat stb;
|
||||
const char *e;
|
||||
|
||||
r = chase(s, NULL, CHASE_SAFE, &q, &dir_fd);
|
||||
if (r == -ENOENT)
|
||||
continue;
|
||||
if (r < 0) {
|
||||
log_warning_errno(r, "Failed to resolve search path '%s', ignoring: %m", s);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Check that the inode refers to a file immediately inside the image directory,
|
||||
* i.e. not the image directory itself, and nothing further down the tree */
|
||||
e = path_startswith(p, q);
|
||||
if (isempty(e))
|
||||
continue;
|
||||
|
||||
e += strspn(e, "/");
|
||||
if (!filename_is_valid(e))
|
||||
continue;
|
||||
|
||||
r = chaseat(dir_fd, e, CHASE_SAFE, NULL, &inode_fd);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Couldn't verify that specified image '%s' is in search path '%s': %m", p, s);
|
||||
|
||||
if (fstat(inode_fd, &stb) < 0)
|
||||
return log_error_errno(errno, "Failed to stat image file '%s/%s': %m", q, e);
|
||||
|
||||
if (stat_inode_same(&sta, &stb)) {
|
||||
log_debug("Image '%s' is *in* trusted directories.", p);
|
||||
return true; /* Yay */
|
||||
}
|
||||
}
|
||||
|
||||
log_debug("Image '%s' is *not* in trusted directories.", p);
|
||||
return false;
|
||||
}
|
||||
|
||||
static int determine_image_policy(
|
||||
int image_fd,
|
||||
bool trusted,
|
||||
ImagePolicy *client_policy,
|
||||
ImagePolicy **ret) {
|
||||
|
||||
_cleanup_(image_policy_freep) ImagePolicy *envvar_policy = NULL;
|
||||
const ImagePolicy *default_policy;
|
||||
const char *envvar, *e;
|
||||
int r;
|
||||
|
||||
assert(image_fd >= 0);
|
||||
assert(ret);
|
||||
|
||||
if (trusted) {
|
||||
envvar = "SYSTEMD_MOUNTFSD_IMAGE_POLICY_TRUSTED";
|
||||
default_policy = &image_policy_allow;
|
||||
} else {
|
||||
envvar = "SYSTEMD_MOUNTFSD_IMAGE_POLICY_UNTRUSTED";
|
||||
default_policy = &image_policy_untrusted;
|
||||
}
|
||||
|
||||
e = secure_getenv(envvar);
|
||||
if (e) {
|
||||
r = image_policy_from_string(e, &envvar_policy);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to parse image policy supplied via $%s: %m", envvar);
|
||||
|
||||
default_policy = envvar_policy;
|
||||
}
|
||||
|
||||
return image_policy_intersect(default_policy, client_policy, ret);
|
||||
}
|
||||
|
||||
static int validate_userns(Varlink *link, int *userns_fd) {
|
||||
int r;
|
||||
|
||||
assert(link);
|
||||
assert(userns_fd);
|
||||
|
||||
if (*userns_fd < 0)
|
||||
return 0;
|
||||
|
||||
r = fd_verify_safe_flags(*userns_fd);
|
||||
if (r < 0)
|
||||
return log_debug_errno(r, "User namespace file descriptor has unsafe flags set: %m");
|
||||
|
||||
r = fd_is_ns(*userns_fd, CLONE_NEWUSER);
|
||||
if (r < 0)
|
||||
return r;
|
||||
if (r == 0)
|
||||
return varlink_error_invalid_parameter_name(link, "userNamespaceFileDescriptor");
|
||||
|
||||
/* Our own host user namespace? Then close the fd, and handle it as if none was specified. */
|
||||
r = is_our_namespace(*userns_fd, NAMESPACE_USER);
|
||||
if (r < 0)
|
||||
return log_debug_errno(r, "Failed to determine if user namespace provided by client is our own.");
|
||||
if (r > 0) {
|
||||
log_debug("User namespace provided by client is our own.");
|
||||
*userns_fd = safe_close(*userns_fd);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vl_method_mount_image(
|
||||
Varlink *link,
|
||||
JsonVariant *parameters,
|
||||
VarlinkMethodFlags flags,
|
||||
void *userdata) {
|
||||
|
||||
static const JsonDispatch dispatch_table[] = {
|
||||
{ "imageFileDescriptor", JSON_VARIANT_UNSIGNED, json_dispatch_uint, offsetof(MountImageParameters, image_fd_idx), JSON_MANDATORY },
|
||||
{ "userNamespaceFileDescriptor", JSON_VARIANT_UNSIGNED, json_dispatch_uint, offsetof(MountImageParameters, userns_fd_idx), 0 },
|
||||
{ "readOnly", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(MountImageParameters, read_only), 0 },
|
||||
{ "growFileSystems", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(MountImageParameters, growfs), 0 },
|
||||
{ "password", JSON_VARIANT_STRING, json_dispatch_string, offsetof(MountImageParameters, password), 0 },
|
||||
{ "imagePolicy", JSON_VARIANT_STRING, json_dispatch_image_policy, offsetof(MountImageParameters, image_policy), 0 },
|
||||
VARLINK_DISPATCH_POLKIT_FIELD,
|
||||
{}
|
||||
};
|
||||
|
||||
_cleanup_(verity_settings_done) VeritySettings verity = VERITY_SETTINGS_DEFAULT;
|
||||
_cleanup_(mount_image_parameters_done) MountImageParameters p = {
|
||||
.image_fd_idx = UINT_MAX,
|
||||
.userns_fd_idx = UINT_MAX,
|
||||
.read_only = -1,
|
||||
.growfs = -1,
|
||||
};
|
||||
_cleanup_(dissected_image_unrefp) DissectedImage *di = NULL;
|
||||
_cleanup_(loop_device_unrefp) LoopDevice *loop = NULL;
|
||||
_cleanup_(json_variant_unrefp) JsonVariant *aj = NULL;
|
||||
_cleanup_close_ int image_fd = -EBADF, userns_fd = -EBADF;
|
||||
_cleanup_(image_policy_freep) ImagePolicy *use_policy = NULL;
|
||||
Hashmap **polkit_registry = ASSERT_PTR(userdata);
|
||||
_cleanup_free_ char *ps = NULL;
|
||||
bool image_is_trusted = false;
|
||||
uid_t peer_uid;
|
||||
int r;
|
||||
|
||||
assert(link);
|
||||
assert(parameters);
|
||||
|
||||
json_variant_sensitive(parameters); /* might contain passwords */
|
||||
|
||||
r = varlink_get_peer_uid(link, &peer_uid);
|
||||
if (r < 0)
|
||||
return log_debug_errno(r, "Failed to get client UID: %m");
|
||||
|
||||
r = varlink_dispatch(link, parameters, dispatch_table, &p);
|
||||
if (r != 0)
|
||||
return r;
|
||||
|
||||
if (p.image_fd_idx != UINT_MAX) {
|
||||
image_fd = varlink_peek_dup_fd(link, p.image_fd_idx);
|
||||
if (image_fd < 0)
|
||||
return log_debug_errno(image_fd, "Failed to peek image fd from client: %m");
|
||||
}
|
||||
|
||||
if (p.userns_fd_idx != UINT_MAX) {
|
||||
userns_fd = varlink_peek_dup_fd(link, p.userns_fd_idx);
|
||||
if (userns_fd < 0)
|
||||
return log_debug_errno(userns_fd, "Failed to peek user namespace fd from client: %m");
|
||||
}
|
||||
|
||||
r = validate_image_fd(image_fd, &p);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = validate_userns(link, &userns_fd);
|
||||
if (r != 0)
|
||||
return r;
|
||||
|
||||
r = verify_trusted_image_fd_by_path(image_fd);
|
||||
if (r < 0)
|
||||
return r;
|
||||
image_is_trusted = r;
|
||||
|
||||
const char *polkit_details[] = {
|
||||
"read_only", one_zero(p.read_only > 0),
|
||||
NULL,
|
||||
};
|
||||
|
||||
const char *polkit_action, *polkit_untrusted_action;
|
||||
PolkitFlags polkit_flags;
|
||||
if (userns_fd < 0) {
|
||||
/* Mount into the host user namespace */
|
||||
polkit_action = "io.systemd.mount-file-system.mount-image";
|
||||
polkit_untrusted_action = "io.systemd.mount-file-system.mount-untrusted-image";
|
||||
polkit_flags = 0;
|
||||
} else {
|
||||
/* Mount into a private user namespace */
|
||||
polkit_action = "io.systemd.mount-file-system.mount-image-privately";
|
||||
polkit_untrusted_action = "io.systemd.mount-file-system.mount-untrusted-image-privately";
|
||||
|
||||
/* If polkit is not around, let's allow mounting authenticated images by default */
|
||||
polkit_flags = POLKIT_DEFAULT_ALLOW;
|
||||
}
|
||||
|
||||
/* Let's definitely acquire the regular action privilege, for mounting properly signed images */
|
||||
r = varlink_verify_polkit_async_full(
|
||||
link,
|
||||
/* bus= */ NULL,
|
||||
polkit_action,
|
||||
polkit_details,
|
||||
/* good_user= */ UID_INVALID,
|
||||
polkit_flags,
|
||||
polkit_registry);
|
||||
if (r <= 0)
|
||||
return r;
|
||||
|
||||
/* Generate the commmon dissection directory here. We are not going to use it, but the clients might,
|
||||
* and they likely are unprivileged, hence cannot create it themselves. Hence let's jsut create it
|
||||
* here, if it is missing. */
|
||||
r = get_common_dissect_directory(NULL);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = loop_device_make(
|
||||
image_fd,
|
||||
p.read_only == 0 ? O_RDONLY : O_RDWR,
|
||||
0,
|
||||
UINT64_MAX,
|
||||
UINT32_MAX,
|
||||
LO_FLAGS_PARTSCAN,
|
||||
LOCK_EX,
|
||||
&loop);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
DissectImageFlags dissect_flags =
|
||||
(p.read_only == 0 ? DISSECT_IMAGE_READ_ONLY : 0) |
|
||||
(p.growfs != 0 ? DISSECT_IMAGE_GROWFS : 0) |
|
||||
DISSECT_IMAGE_DISCARD_ANY |
|
||||
DISSECT_IMAGE_FSCK |
|
||||
DISSECT_IMAGE_ADD_PARTITION_DEVICES |
|
||||
DISSECT_IMAGE_PIN_PARTITION_DEVICES |
|
||||
DISSECT_IMAGE_ALLOW_USERSPACE_VERITY;
|
||||
|
||||
/* Let's see if we have acquired the privilege to mount untrusted images already */
|
||||
bool polkit_have_untrusted_action =
|
||||
varlink_has_polkit_action(link, polkit_untrusted_action, polkit_details, polkit_registry);
|
||||
|
||||
for (;;) {
|
||||
use_policy = image_policy_free(use_policy);
|
||||
ps = mfree(ps);
|
||||
|
||||
/* We use the image policy for trusted images if either the path is below a trusted
|
||||
* directory, or if we have already acquired a PK authentication that tells us that untrusted
|
||||
* images are OK */
|
||||
bool use_trusted_policy =
|
||||
image_is_trusted ||
|
||||
polkit_have_untrusted_action;
|
||||
|
||||
r = determine_image_policy(
|
||||
image_fd,
|
||||
use_trusted_policy,
|
||||
p.image_policy,
|
||||
&use_policy);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = image_policy_to_string(use_policy, /* simplify= */ true, &ps);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
log_debug("Using image policy: %s", ps);
|
||||
|
||||
r = dissect_loop_device(
|
||||
loop,
|
||||
&verity,
|
||||
/* mount_options= */ NULL,
|
||||
use_policy,
|
||||
dissect_flags,
|
||||
&di);
|
||||
if (r == -ENOPKG)
|
||||
return varlink_error(link, "io.systemd.MountFileSystem.IncompatibleImage", NULL);
|
||||
if (r == -ENOTUNIQ)
|
||||
return varlink_error(link, "io.systemd.MountFileSystem.MultipleRootPartitionsFound", NULL);
|
||||
if (r == -ENXIO)
|
||||
return varlink_error(link, "io.systemd.MountFileSystem.RootPartitionNotFound", NULL);
|
||||
if (r == -ERFKILL) {
|
||||
/* The image policy refused this, let's retry after trying to get PolicyKit */
|
||||
|
||||
if (!polkit_have_untrusted_action) {
|
||||
log_debug("Denied by image policy. Trying a stronger polkit authentication before continuing.");
|
||||
r = varlink_verify_polkit_async_full(
|
||||
link,
|
||||
/* bus= */ NULL,
|
||||
polkit_untrusted_action,
|
||||
polkit_details,
|
||||
/* good_user= */ UID_INVALID,
|
||||
/* flags= */ 0, /* NB: the image cannot be authenticated, hence unless PK is around to allow this anyway, fail! */
|
||||
polkit_registry);
|
||||
if (r <= 0 && !ERRNO_IS_NEG_PRIVILEGE(r))
|
||||
return r;
|
||||
if (r > 0) {
|
||||
/* Try again, now that we know the client has enough privileges. */
|
||||
log_debug("Denied by image policy, retrying after polkit authentication.");
|
||||
polkit_have_untrusted_action = true;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
return varlink_error(link, "io.systemd.MountFileSystem.DeniedByImagePolicy", NULL);
|
||||
}
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
/* Success */
|
||||
break;
|
||||
}
|
||||
|
||||
r = dissected_image_load_verity_sig_partition(
|
||||
di,
|
||||
loop->fd,
|
||||
&verity);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = dissected_image_decrypt(
|
||||
di,
|
||||
p.password,
|
||||
&verity,
|
||||
dissect_flags);
|
||||
if (r == -ENOKEY) /* new dm-verity userspace returns ENOKEY if the dm-verity signature key is not in
|
||||
* key chain. That's great. */
|
||||
return varlink_error(link, "io.systemd.MountFileSystem.KeyNotFound", NULL);
|
||||
if (r == -EBUSY) /* DM kernel subsystem is shit with returning useful errors hence we keep retrying
|
||||
* under the assumption that some errors are transitional. Which the errors might
|
||||
* not actually be. After all retries failed we return EBUSY. Let's turn that into a
|
||||
* generic Verity error. It's not very helpful, could mean anything, but at least it
|
||||
* gives client a clear idea that this has to do with Verity. */
|
||||
return varlink_error(link, "io.systemd.MountFileSystem.VerityFailure", NULL);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = dissected_image_mount(
|
||||
di,
|
||||
/* where= */ NULL,
|
||||
/* uid_shift= */ UID_INVALID,
|
||||
/* uid_range= */ UID_INVALID,
|
||||
userns_fd,
|
||||
dissect_flags);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
for (PartitionDesignator d = 0; d < _PARTITION_DESIGNATOR_MAX; d++) {
|
||||
_cleanup_(json_variant_unrefp) JsonVariant *pj = NULL;
|
||||
DissectedPartition *pp = di->partitions + d;
|
||||
int fd_idx;
|
||||
|
||||
if (!pp->found)
|
||||
continue;
|
||||
|
||||
if (pp->fsmount_fd < 0)
|
||||
continue;
|
||||
|
||||
if (userns_fd >= 0) {
|
||||
r = nsresource_add_mount(userns_fd, pp->fsmount_fd);
|
||||
if (r < 0)
|
||||
return r;
|
||||
}
|
||||
|
||||
fd_idx = varlink_push_fd(link, pp->fsmount_fd);
|
||||
if (fd_idx < 0)
|
||||
return fd_idx;
|
||||
|
||||
TAKE_FD(pp->fsmount_fd);
|
||||
|
||||
r = json_build(&pj,
|
||||
JSON_BUILD_OBJECT(
|
||||
JSON_BUILD_PAIR("designator", JSON_BUILD_STRING(partition_designator_to_string(d))),
|
||||
JSON_BUILD_PAIR("writable", JSON_BUILD_BOOLEAN(pp->rw)),
|
||||
JSON_BUILD_PAIR("growFileSystem", JSON_BUILD_BOOLEAN(pp->growfs)),
|
||||
JSON_BUILD_PAIR_CONDITION(pp->partno > 0, "partitionNumber", JSON_BUILD_INTEGER(pp->partno)),
|
||||
JSON_BUILD_PAIR_CONDITION(pp->architecture > 0, "architecture", JSON_BUILD_STRING(architecture_to_string(pp->architecture))),
|
||||
JSON_BUILD_PAIR_CONDITION(!sd_id128_is_null(pp->uuid), "partitionUuid", JSON_BUILD_UUID(pp->uuid)),
|
||||
JSON_BUILD_PAIR("fileSystemType", JSON_BUILD_STRING(dissected_partition_fstype(pp))),
|
||||
JSON_BUILD_PAIR_CONDITION(pp->label, "partitionLabel", JSON_BUILD_STRING(pp->label)),
|
||||
JSON_BUILD_PAIR("size", JSON_BUILD_INTEGER(pp->size)),
|
||||
JSON_BUILD_PAIR("offset", JSON_BUILD_INTEGER(pp->offset)),
|
||||
JSON_BUILD_PAIR("mountFileDescriptor", JSON_BUILD_INTEGER(fd_idx))));
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = json_variant_append_array(&aj, pj);
|
||||
if (r < 0)
|
||||
return r;
|
||||
}
|
||||
|
||||
loop_device_relinquish(loop);
|
||||
|
||||
r = varlink_replyb(link, JSON_BUILD_OBJECT(
|
||||
JSON_BUILD_PAIR("partitions", JSON_BUILD_VARIANT(aj)),
|
||||
JSON_BUILD_PAIR("imagePolicy", JSON_BUILD_STRING(ps)),
|
||||
JSON_BUILD_PAIR("imageSize", JSON_BUILD_INTEGER(di->image_size)),
|
||||
JSON_BUILD_PAIR("sectorSize", JSON_BUILD_INTEGER(di->sector_size)),
|
||||
JSON_BUILD_PAIR_CONDITION(!sd_id128_is_null(di->image_uuid), "imageUuid", JSON_BUILD_UUID(di->image_uuid))));
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static int process_connection(VarlinkServer *server, int _fd) {
|
||||
_cleanup_close_ int fd = TAKE_FD(_fd); /* always take possesion */
|
||||
_cleanup_(varlink_close_unrefp) Varlink *vl = NULL;
|
||||
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
|
||||
int r;
|
||||
|
||||
r = sd_event_new(&event);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = varlink_server_attach_event(server, event, 0);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to attach Varlink server to event loop: %m");
|
||||
|
||||
r = varlink_server_add_connection(server, fd, &vl);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to add connection: %m");
|
||||
|
||||
TAKE_FD(fd);
|
||||
vl = varlink_ref(vl);
|
||||
|
||||
r = varlink_set_allow_fd_passing_input(vl, true);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to enable fd passing for read: %m");
|
||||
|
||||
r = varlink_set_allow_fd_passing_output(vl, true);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to enable fd passing for write: %m");
|
||||
|
||||
r = sd_event_loop(event);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to run event loop: %m");
|
||||
|
||||
r = varlink_server_detach_event(server);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to detach Varlink server from event loop: %m");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int run(int argc, char *argv[]) {
|
||||
usec_t start_time, listen_idle_usec, last_busy_usec = USEC_INFINITY;
|
||||
_cleanup_(varlink_server_unrefp) VarlinkServer *server = NULL;
|
||||
_cleanup_(hashmap_freep) Hashmap *polkit_registry = NULL;
|
||||
_cleanup_(pidref_done) PidRef parent = PIDREF_NULL;
|
||||
unsigned n_iterations = 0;
|
||||
int m, listen_fd, r;
|
||||
|
||||
log_setup();
|
||||
|
||||
m = sd_listen_fds(false);
|
||||
if (m < 0)
|
||||
return log_error_errno(m, "Failed to determine number of listening fds: %m");
|
||||
if (m == 0)
|
||||
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No socket to listen on received.");
|
||||
if (m > 1)
|
||||
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Worker can only listen on a single socket at a time.");
|
||||
|
||||
listen_fd = SD_LISTEN_FDS_START;
|
||||
|
||||
r = fd_nonblock(listen_fd, false);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to turn off non-blocking mode for listening socket: %m");
|
||||
|
||||
r = varlink_server_new(&server, VARLINK_SERVER_INHERIT_USERDATA);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to allocate server: %m");
|
||||
|
||||
r = varlink_server_add_interface(server, &vl_interface_io_systemd_MountFileSystem);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to add MountFileSystem interface to varlink server: %m");
|
||||
|
||||
r = varlink_server_bind_method_many(
|
||||
server,
|
||||
"io.systemd.MountFileSystem.MountImage",vl_method_mount_image);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to bind methods: %m");
|
||||
|
||||
varlink_server_set_userdata(server, &polkit_registry);
|
||||
|
||||
r = varlink_server_set_exit_on_idle(server, true);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to enable exit-on-idle mode: %m");
|
||||
|
||||
r = getenv_bool("MOUNTFS_FIXED_WORKER");
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to parse MOUNTFSD_FIXED_WORKER: %m");
|
||||
listen_idle_usec = r ? USEC_INFINITY : LISTEN_IDLE_USEC;
|
||||
|
||||
r = pidref_set_parent(&parent);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to acquire pidfd of parent process: %m");
|
||||
|
||||
start_time = now(CLOCK_MONOTONIC);
|
||||
|
||||
for (;;) {
|
||||
_cleanup_close_ int fd = -EBADF;
|
||||
usec_t n;
|
||||
|
||||
/* Exit the worker in regular intervals, to flush out all memory use */
|
||||
if (n_iterations++ > ITERATIONS_MAX) {
|
||||
log_debug("Exiting worker, processed %u iterations, that's enough.", n_iterations);
|
||||
break;
|
||||
}
|
||||
|
||||
n = now(CLOCK_MONOTONIC);
|
||||
if (n >= usec_add(start_time, RUNTIME_MAX_USEC)) {
|
||||
log_debug("Exiting worker, ran for %s, that's enough.",
|
||||
FORMAT_TIMESPAN(usec_sub_unsigned(n, start_time), 0));
|
||||
break;
|
||||
}
|
||||
|
||||
if (last_busy_usec == USEC_INFINITY)
|
||||
last_busy_usec = n;
|
||||
else if (listen_idle_usec != USEC_INFINITY && n >= usec_add(last_busy_usec, listen_idle_usec)) {
|
||||
log_debug("Exiting worker, been idle for %s.",
|
||||
FORMAT_TIMESPAN(usec_sub_unsigned(n, last_busy_usec), 0));
|
||||
break;
|
||||
}
|
||||
|
||||
(void) rename_process("systemd-mountwork: waiting...");
|
||||
fd = RET_NERRNO(accept4(listen_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC));
|
||||
(void) rename_process("systemd-mountwork: processing...");
|
||||
|
||||
if (fd == -EAGAIN)
|
||||
continue; /* The listening socket has SO_RECVTIMEO set, hence a timeout is expected
|
||||
* after a while, let's check if it's time to exit though. */
|
||||
if (fd == -EINTR)
|
||||
continue; /* Might be that somebody attached via strace, let's just continue in that
|
||||
* case */
|
||||
if (fd < 0)
|
||||
return log_error_errno(fd, "Failed to accept() from listening socket: %m");
|
||||
|
||||
if (now(CLOCK_MONOTONIC) <= usec_add(n, PRESSURE_SLEEP_TIME_USEC)) {
|
||||
/* We only slept a very short time? If so, let's see if there are more sockets
|
||||
* pending, and if so, let's ask our parent for more workers */
|
||||
|
||||
r = fd_wait_for_event(listen_fd, POLLIN, 0);
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to test for POLLIN on listening socket: %m");
|
||||
|
||||
if (FLAGS_SET(r, POLLIN)) {
|
||||
r = pidref_kill(&parent, SIGUSR2);
|
||||
if (r == -ESRCH)
|
||||
return log_error_errno(r, "Parent already died?");
|
||||
if (r < 0)
|
||||
return log_error_errno(r, "Failed to send SIGUSR2 signal to parent. %m");
|
||||
}
|
||||
}
|
||||
|
||||
(void) process_connection(server, TAKE_FD(fd));
|
||||
last_busy_usec = USEC_INFINITY;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
DEFINE_MAIN_FUNCTION(run);
|
||||
@@ -181,6 +181,7 @@ shared_sources = files(
|
||||
'varlink-io.systemd.Hostname.c',
|
||||
'varlink-io.systemd.Journal.c',
|
||||
'varlink-io.systemd.ManagedOOM.c',
|
||||
'varlink-io.systemd.MountFileSystem.c',
|
||||
'varlink-io.systemd.NamespaceResource.c',
|
||||
'varlink-io.systemd.Network.c',
|
||||
'varlink-io.systemd.PCRExtend.c',
|
||||
|
||||
@@ -0,0 +1,69 @@
|
||||
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
||||
|
||||
#include "varlink-io.systemd.MountFileSystem.h"
|
||||
|
||||
static VARLINK_DEFINE_ENUM_TYPE(
|
||||
PartitionDesignator,
|
||||
VARLINK_DEFINE_ENUM_VALUE(root),
|
||||
VARLINK_DEFINE_ENUM_VALUE(usr),
|
||||
VARLINK_DEFINE_ENUM_VALUE(home),
|
||||
VARLINK_DEFINE_ENUM_VALUE(srv),
|
||||
VARLINK_DEFINE_ENUM_VALUE(esp),
|
||||
VARLINK_DEFINE_ENUM_VALUE(xbootldr),
|
||||
VARLINK_DEFINE_ENUM_VALUE(swap),
|
||||
VARLINK_DEFINE_ENUM_VALUE(root_verity),
|
||||
VARLINK_DEFINE_ENUM_VALUE(usr_verity),
|
||||
VARLINK_DEFINE_ENUM_VALUE(root_verity_sig),
|
||||
VARLINK_DEFINE_ENUM_VALUE(usr_verity_sig),
|
||||
VARLINK_DEFINE_ENUM_VALUE(tmp),
|
||||
VARLINK_DEFINE_ENUM_VALUE(var));
|
||||
|
||||
static VARLINK_DEFINE_STRUCT_TYPE(
|
||||
PartitionInfo,
|
||||
VARLINK_DEFINE_FIELD(designator, VARLINK_STRING, 0),
|
||||
VARLINK_DEFINE_FIELD(writable, VARLINK_BOOL, 0),
|
||||
VARLINK_DEFINE_FIELD(growFileSystem, VARLINK_BOOL, 0),
|
||||
VARLINK_DEFINE_FIELD(partitionNumber, VARLINK_INT, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_FIELD(architecture, VARLINK_STRING, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_FIELD(partitionUuid, VARLINK_STRING, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_FIELD(fileSystemType, VARLINK_STRING, 0),
|
||||
VARLINK_DEFINE_FIELD(partitionLabel, VARLINK_STRING, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_FIELD(size, VARLINK_INT, 0),
|
||||
VARLINK_DEFINE_FIELD(offset, VARLINK_INT, 0),
|
||||
VARLINK_DEFINE_FIELD(mountFileDescriptor, VARLINK_INT, 0));
|
||||
|
||||
static VARLINK_DEFINE_METHOD(
|
||||
MountImage,
|
||||
VARLINK_DEFINE_INPUT(imageFileDescriptor, VARLINK_INT, 0),
|
||||
VARLINK_DEFINE_INPUT(userNamespaceFileDescriptor, VARLINK_INT, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_INPUT(readOnly, VARLINK_BOOL, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_INPUT(growFileSystems, VARLINK_BOOL, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_INPUT(password, VARLINK_STRING, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_INPUT(imagePolicy, VARLINK_STRING, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_INPUT(allowInteractiveAuthentication, VARLINK_BOOL, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_OUTPUT_BY_TYPE(partitions, PartitionInfo, VARLINK_ARRAY),
|
||||
VARLINK_DEFINE_OUTPUT(imagePolicy, VARLINK_STRING, 0),
|
||||
VARLINK_DEFINE_OUTPUT(imageSize, VARLINK_INT, 0),
|
||||
VARLINK_DEFINE_OUTPUT(sectorSize, VARLINK_INT, 0),
|
||||
VARLINK_DEFINE_OUTPUT(imageName, VARLINK_STRING, VARLINK_NULLABLE),
|
||||
VARLINK_DEFINE_OUTPUT(imageUuid, VARLINK_STRING, VARLINK_NULLABLE));
|
||||
|
||||
static VARLINK_DEFINE_ERROR(IncompatibleImage);
|
||||
static VARLINK_DEFINE_ERROR(MultipleRootPartitionsFound);
|
||||
static VARLINK_DEFINE_ERROR(RootPartitionNotFound);
|
||||
static VARLINK_DEFINE_ERROR(DeniedByImagePolicy);
|
||||
static VARLINK_DEFINE_ERROR(KeyNotFound);
|
||||
static VARLINK_DEFINE_ERROR(VerityFailure);
|
||||
|
||||
VARLINK_DEFINE_INTERFACE(
|
||||
io_systemd_MountFileSystem,
|
||||
"io.systemd.MountFileSystem",
|
||||
&vl_type_PartitionDesignator,
|
||||
&vl_type_PartitionInfo,
|
||||
&vl_method_MountImage,
|
||||
&vl_error_IncompatibleImage,
|
||||
&vl_error_MultipleRootPartitionsFound,
|
||||
&vl_error_RootPartitionNotFound,
|
||||
&vl_error_DeniedByImagePolicy,
|
||||
&vl_error_KeyNotFound,
|
||||
&vl_error_VerityFailure);
|
||||
@@ -0,0 +1,6 @@
|
||||
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
||||
#pragma once
|
||||
|
||||
#include "varlink-idl.h"
|
||||
|
||||
extern const VarlinkInterface vl_interface_io_systemd_MountFileSystem;
|
||||
@@ -12,6 +12,7 @@
|
||||
#include "varlink-io.systemd.Credentials.h"
|
||||
#include "varlink-io.systemd.Journal.h"
|
||||
#include "varlink-io.systemd.ManagedOOM.h"
|
||||
#include "varlink-io.systemd.MountFileSystem.h"
|
||||
#include "varlink-io.systemd.NamespaceResource.h"
|
||||
#include "varlink-io.systemd.Network.h"
|
||||
#include "varlink-io.systemd.PCRExtend.h"
|
||||
@@ -140,6 +141,8 @@ TEST(parse_format) {
|
||||
print_separator();
|
||||
test_parse_format_one(&vl_interface_io_systemd_ManagedOOM);
|
||||
print_separator();
|
||||
test_parse_format_one(&vl_interface_io_systemd_MountFileSystem);
|
||||
print_separator();
|
||||
test_parse_format_one(&vl_interface_io_systemd_Network);
|
||||
print_separator();
|
||||
test_parse_format_one(&vl_interface_io_systemd_oom);
|
||||
|
||||
Reference in New Issue
Block a user