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Merge pull request #29764 from dtardon/varlink-io.systemd.service

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Add varlink interface io.systemd.service
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Luca Boccassi 2023-11-01 14:41:58 +00:00 committed by GitHub
commit 7c2fd96dba
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4 changed files with 84 additions and 0 deletions
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1
src/shared/meson.build
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@ -176,6 +176,7 @@ shared_sources = files(
'varlink-io.systemd.Resolve.c',
'varlink-io.systemd.UserDatabase.c',
'varlink-io.systemd.oom.c',
'varlink-io.systemd.service.c',
'varlink-io.systemd.sysext.c',
'varlink-org.varlink.service.c',
'verb-log-control.c',

70
src/shared/varlink-io.systemd.service.c Normal file
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@ -0,0 +1,70 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <unistd.h>
#include "varlink-io.systemd.service.h"
static VARLINK_DEFINE_METHOD(Ping);
static VARLINK_DEFINE_METHOD(Reload);
static VARLINK_DEFINE_METHOD(
SetLogLevel,
VARLINK_DEFINE_INPUT(level, VARLINK_INT, 0));
VARLINK_DEFINE_INTERFACE(
io_systemd_service,
"io.systemd.service",
&vl_method_Ping,
&vl_method_Reload,
&vl_method_SetLogLevel);
int varlink_method_ping(Varlink *link, JsonVariant *parameters, VarlinkMethodFlags flags, void *userdata) {
assert(link);
if (json_variant_elements(parameters) > 0)
return varlink_error_invalid_parameter(link, parameters);
log_debug("Received io.systemd.service.Ping");
return varlink_reply(link, NULL);
}
int varlink_method_set_log_level(Varlink *link, JsonVariant *parameters, VarlinkMethodFlags flags, void *userdata) {
static const JsonDispatch dispatch_table[] = {
{"level", JSON_VARIANT_INTEGER, json_dispatch_int64, 0, JSON_MANDATORY},
{}
};
int64_t level;
uid_t uid;
int r;
assert(link);
assert(parameters);
/* NOTE: The method does have 1 parameter, but we must compare to 2 here, because
* json_variant_elements() breaks abstraction and exposes internal structure of JsonObject. */
if (json_variant_elements(parameters) != 2)
return varlink_error_invalid_parameter(link, parameters);
r = json_dispatch(parameters, dispatch_table, NULL, 0, &level);
if (r < 0)
return r;
if (LOG_PRI(level) != level)
return varlink_error_invalid_parameter(link, parameters);
r = varlink_get_peer_uid(link, &uid);
if (r < 0)
return r;
if (uid != getuid() && uid != 0)
return varlink_error(link, VARLINK_ERROR_PERMISSION_DENIED, parameters);
log_debug("Received io.systemd.service.SetLogLevel(%" PRIi64 ")", level);
log_set_max_level(level);
return varlink_reply(link, NULL);
}

10
src/shared/varlink-io.systemd.service.h Normal file
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@ -0,0 +1,10 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
#include "varlink.h"
#include "varlink-idl.h"
extern const VarlinkInterface vl_interface_io_systemd_service;
int varlink_method_ping(Varlink *link, JsonVariant *parameters, VarlinkMethodFlags flags, void *userdata);
int varlink_method_set_log_level(Varlink *link, JsonVariant *parameters, VarlinkMethodFlags flags, void *userdata);

3
src/test/test-varlink-idl.c
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@ -15,6 +15,7 @@
#include "varlink-io.systemd.Resolve.h"
#include "varlink-io.systemd.UserDatabase.h"
#include "varlink-io.systemd.oom.h"
#include "varlink-io.systemd.service.h"
#include "varlink-io.systemd.sysext.h"
#include "varlink-org.varlink.service.h"
@ -138,6 +139,8 @@ TEST(parse_format) {
print_separator();
test_parse_format_one(&vl_interface_io_systemd_PCRExtend);
print_separator();
test_parse_format_one(&vl_interface_io_systemd_service);
print_separator();
test_parse_format_one(&vl_interface_io_systemd_sysext);
print_separator();
test_parse_format_one(&vl_interface_xyz_test);