libsystemd-bus: rename to libsystemd

Documentation was updated to refer to either 'libsystemd' or 'sd-bus' in place
of libsystemd-bus.

1 files changed, 0 insertions, 1217 deletions

diff --git a/src/libsystemd-bus/bus-control.c b/src/libsystemd-bus/bus-control.c
deleted file mode 100644
index e7e9ba07b0..0000000000
--- a/src/libsystemd-bus/bus-control.c
+++ /dev/null
@@ -1,1217 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2013 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/>.
-***/
-
-#ifdef HAVE_VALGRIND_MEMCHECK_H
-#include <valgrind/memcheck.h>
-#endif
-
-#include <stddef.h>
-#include <errno.h>
-
-#include "strv.h"
-#include "sd-bus.h"
-#include "bus-internal.h"
-#include "bus-message.h"
-#include "bus-control.h"
-#include "bus-bloom.h"
-#include "bus-util.h"
-#include "cgroup-util.h"
-
-_public_ int sd_bus_get_unique_name(sd_bus *bus, const char **unique) {
-        int r;
-
-        assert_return(bus, -EINVAL);
-        assert_return(unique, -EINVAL);
-        assert_return(!bus_pid_changed(bus), -ECHILD);
-
-        r = bus_ensure_running(bus);
-        if (r < 0)
-                return r;
-
-        *unique = bus->unique_name;
-        return 0;
-}
-
-static int bus_request_name_kernel(sd_bus *bus, const char *name, uint64_t flags) {
-        struct kdbus_cmd_name *n;
-        size_t size, l;
-        int r;
-
-        assert(bus);
-        assert(name);
-
-        l = strlen(name);
-        size = offsetof(struct kdbus_cmd_name, name) + l + 1;
-        n = alloca0(size);
-        n->size = size;
-        kdbus_translate_request_name_flags(flags, (uint64_t *) &n->flags);
-        memcpy(n->name, name, l+1);
-
-#ifdef HAVE_VALGRIND_MEMCHECK_H
-        VALGRIND_MAKE_MEM_DEFINED(n, n->size);
-#endif
-
-        r = ioctl(bus->input_fd, KDBUS_CMD_NAME_ACQUIRE, n);
-        if (r < 0)
-                return -errno;
-
-        if (n->flags & KDBUS_NAME_IN_QUEUE)
-                return 0;
-
-        return 1;
-}
-
-static int bus_request_name_dbus1(sd_bus *bus, const char *name, uint64_t flags) {
-        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
-        uint32_t ret, param = 0;
-        int r;
-
-        assert(bus);
-        assert(name);
-
-        if (flags & SD_BUS_NAME_ALLOW_REPLACEMENT)
-                param |= BUS_NAME_ALLOW_REPLACEMENT;
-        if (flags & SD_BUS_NAME_REPLACE_EXISTING)
-                param |= BUS_NAME_REPLACE_EXISTING;
-        if (!(flags & SD_BUS_NAME_QUEUE))
-                param |= BUS_NAME_DO_NOT_QUEUE;
-
-        r = sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.DBus",
-                        "/org/freedesktop/DBus",
-                        "org.freedesktop.DBus",
-                        "RequestName",
-                        NULL,
-                        &reply,
-                        "su",
-                        name,
-                        param);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_read(reply, "u", &ret);
-        if (r < 0)
-                return r;
-
-        if (ret == BUS_NAME_ALREADY_OWNER)
-                return -EALREADY;
-        else if (ret == BUS_NAME_EXISTS)
-                return -EEXIST;
-        else if (ret == BUS_NAME_IN_QUEUE)
-                return 0;
-        else if (ret == BUS_NAME_PRIMARY_OWNER)
-                return 1;
-
-        return -EIO;
-}
-
-_public_ int sd_bus_request_name(sd_bus *bus, const char *name, uint64_t flags) {
-        assert_return(bus, -EINVAL);
-        assert_return(name, -EINVAL);
-        assert_return(bus->bus_client, -EINVAL);
-        assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
-        assert_return(!bus_pid_changed(bus), -ECHILD);
-        assert_return(!(flags & ~(SD_BUS_NAME_ALLOW_REPLACEMENT|SD_BUS_NAME_REPLACE_EXISTING|SD_BUS_NAME_QUEUE)), -EINVAL);
-        assert_return(service_name_is_valid(name), -EINVAL);
-        assert_return(name[0] != ':', -EINVAL);
-
-        if (bus->is_kernel)
-                return bus_request_name_kernel(bus, name, flags);
-        else
-                return bus_request_name_dbus1(bus, name, flags);
-}
-
-static int bus_release_name_kernel(sd_bus *bus, const char *name) {
-        struct kdbus_cmd_name *n;
-        size_t l;
-        int r;
-
-        assert(bus);
-        assert(name);
-
-        l = strlen(name);
-        n = alloca0(offsetof(struct kdbus_cmd_name, name) + l + 1);
-        n->size = offsetof(struct kdbus_cmd_name, name) + l + 1;
-        memcpy(n->name, name, l+1);
-
-#ifdef HAVE_VALGRIND_MEMCHECK_H
-        VALGRIND_MAKE_MEM_DEFINED(n, n->size);
-#endif
-        r = ioctl(bus->input_fd, KDBUS_CMD_NAME_RELEASE, n);
-        if (r < 0)
-                return -errno;
-
-        return n->flags;
-}
-
-static int bus_release_name_dbus1(sd_bus *bus, const char *name) {
-        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
-        uint32_t ret;
-        int r;
-
-        assert(bus);
-        assert(name);
-
-        r = sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.DBus",
-                        "/org/freedesktop/DBus",
-                        "org.freedesktop.DBus",
-                        "ReleaseName",
-                        NULL,
-                        &reply,
-                        "s",
-                        name);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_read(reply, "u", &ret);
-        if (r < 0)
-                return r;
-        if (ret == BUS_NAME_NON_EXISTENT)
-                return -ESRCH;
-        if (ret == BUS_NAME_NOT_OWNER)
-                return -EADDRINUSE;
-        if (ret == BUS_NAME_RELEASED)
-                return 0;
-
-        return -EINVAL;
-}
-
-_public_ int sd_bus_release_name(sd_bus *bus, const char *name) {
-        assert_return(bus, -EINVAL);
-        assert_return(name, -EINVAL);
-        assert_return(bus->bus_client, -EINVAL);
-        assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
-        assert_return(!bus_pid_changed(bus), -ECHILD);
-        assert_return(service_name_is_valid(name), -EINVAL);
-        assert_return(name[0] != ':', -EINVAL);
-
-        if (bus->is_kernel)
-                return bus_release_name_kernel(bus, name);
-        else
-                return bus_release_name_dbus1(bus, name);
-}
-
-static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
-        struct kdbus_cmd_name_list cmd = {};
-        struct kdbus_name_list *name_list;
-        struct kdbus_cmd_name *name;
-        uint64_t previous_id = 0;
-        int r;
-
-        /* Caller will free half-constructed list on failure... */
-
-        cmd.flags = flags;
-
-        r = ioctl(bus->input_fd, KDBUS_CMD_NAME_LIST, &cmd);
-        if (r < 0)
-                return -errno;
-
-        name_list = (struct kdbus_name_list *) ((uint8_t *) bus->kdbus_buffer + cmd.offset);
-
-        KDBUS_ITEM_FOREACH(name, name_list, names) {
-
-                if ((flags & KDBUS_NAME_LIST_UNIQUE) && name->owner_id != previous_id) {
-                        char *n;
-
-                        if (asprintf(&n, ":1.%llu", (unsigned long long) name->owner_id) < 0)
-                                return -ENOMEM;
-
-                        r = strv_push(x, n);
-                        if (r < 0) {
-                                free(n);
-                                return -ENOMEM;
-                        }
-
-                        previous_id = name->owner_id;
-                }
-
-                if (name->size > sizeof(*name) && service_name_is_valid(name->name)) {
-                        r = strv_extend(x, name->name);
-                        if (r < 0)
-                                return -ENOMEM;
-                }
-        }
-
-        r = ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd.offset);
-        if (r < 0)
-                return -errno;
-
-        return 0;
-}
-
-static int bus_list_names_kernel(sd_bus *bus, char ***acquired, char ***activatable) {
-        _cleanup_strv_free_ char **x = NULL, **y = NULL;
-        int r;
-
-        if (acquired) {
-                r = kernel_get_list(bus, KDBUS_NAME_LIST_UNIQUE | KDBUS_NAME_LIST_NAMES, &x);
-                if (r < 0)
-                        return r;
-        }
-
-        if (activatable) {
-                r = kernel_get_list(bus, KDBUS_NAME_LIST_ACTIVATORS, &y);
-                if (r < 0)
-                        return r;
-
-                *activatable = y;
-                y = NULL;
-        }
-
-        if (acquired) {
-                *acquired = x;
-                x = NULL;
-        }
-
-        return 0;
-}
-
-static int bus_list_names_dbus1(sd_bus *bus, char ***acquired, char ***activatable) {
-        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
-        _cleanup_strv_free_ char **x = NULL, **y = NULL;
-        int r;
-
-        if (acquired) {
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.DBus",
-                                "/org/freedesktop/DBus",
-                                "org.freedesktop.DBus",
-                                "ListNames",
-                                NULL,
-                                &reply,
-                                NULL);
-                if (r < 0)
-                        return r;
-
-                r = sd_bus_message_read_strv(reply, &x);
-                if (r < 0)
-                        return r;
-
-                reply = sd_bus_message_unref(reply);
-        }
-
-        if (activatable) {
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.DBus",
-                                "/org/freedesktop/DBus",
-                                "org.freedesktop.DBus",
-                                "ListActivatableNames",
-                                NULL,
-                                &reply,
-                                NULL);
-                if (r < 0)
-                        return r;
-
-                r = sd_bus_message_read_strv(reply, &y);
-                if (r < 0)
-                        return r;
-
-                *activatable = y;
-                y = NULL;
-        }
-
-        if (acquired) {
-                *acquired = x;
-                x = NULL;
-        }
-
-        return 0;
-}
-
-_public_ int sd_bus_list_names(sd_bus *bus, char ***acquired, char ***activatable) {
-        assert_return(bus, -EINVAL);
-        assert_return(acquired || activatable, -EINVAL);
-        assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
-        assert_return(!bus_pid_changed(bus), -ECHILD);
-
-        if (bus->is_kernel)
-                return bus_list_names_kernel(bus, acquired, activatable);
-        else
-                return bus_list_names_dbus1(bus, acquired, activatable);
-}
-
-static int bus_get_owner_kdbus(
-                sd_bus *bus,
-                const char *name,
-                uint64_t mask,
-                sd_bus_creds **creds) {
-
-        _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
-        struct kdbus_cmd_conn_info *cmd;
-        struct kdbus_conn_info *conn_info;
-        struct kdbus_item *item;
-        size_t size;
-        uint64_t m, id;
-        int r;
-
-        r = bus_kernel_parse_unique_name(name, &id);
-        if (r < 0)
-                return r;
-        if (r > 0) {
-                size = offsetof(struct kdbus_cmd_conn_info, name);
-                cmd = alloca0(size);
-                cmd->id = id;
-        } else {
-                size = offsetof(struct kdbus_cmd_conn_info, name) + strlen(name) + 1;
-                cmd = alloca0(size);
-                strcpy(cmd->name, name);
-        }
-        cmd->flags = KDBUS_ATTACH_NAMES;
-
-        cmd->size = size;
-        r = ioctl(bus->input_fd, KDBUS_CMD_CONN_INFO, cmd);
-        if (r < 0)
-                return -errno;
-
-        conn_info = (struct kdbus_conn_info *) ((uint8_t *) bus->kdbus_buffer + cmd->offset);
-
-        /* Non-activated names are considered not available */
-        if (conn_info->flags & KDBUS_HELLO_ACTIVATOR)
-                return name[0] == ':' ? -ENXIO : -ENOENT;
-
-        c = bus_creds_new();
-        if (!c)
-                return -ENOMEM;
-
-        if (mask & SD_BUS_CREDS_UNIQUE_NAME) {
-                if (asprintf(&c->unique_name, ":1.%llu", (unsigned long long) conn_info->id) < 0)
-                        return -ENOMEM;
-
-                c->mask |= SD_BUS_CREDS_UNIQUE_NAME;
-        }
-
-        KDBUS_ITEM_FOREACH(item, conn_info, items) {
-
-                switch (item->type) {
-
-                case KDBUS_ITEM_CREDS:
-                        m = (SD_BUS_CREDS_UID | SD_BUS_CREDS_GID | SD_BUS_CREDS_PID) & mask;
-
-                        if (m) {
-                                c->uid = (uid_t) item->creds.uid;
-                                c->pid = (pid_t) item->creds.pid;
-                                c->gid = (gid_t) item->creds.gid;
-                                c->mask |= m;
-                        }
-
-                        if (mask & SD_BUS_CREDS_TID && item->creds.tid > 0) {
-                                c->tid = (pid_t) item->creds.tid;
-                                c->mask |= SD_BUS_CREDS_TID;
-                        }
-
-                        if (mask & SD_BUS_CREDS_PID_STARTTIME && item->creds.starttime > 0) {
-                                c->pid_starttime = item->creds.starttime;
-                                c->mask |= SD_BUS_CREDS_PID_STARTTIME;
-                        }
-
-                        break;
-
-                case KDBUS_ITEM_PID_COMM:
-                        if (mask & SD_BUS_CREDS_COMM) {
-                                c->comm = strdup(item->str);
-                                if (!c->comm) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
-
-                                c->mask |= SD_BUS_CREDS_COMM;
-                        }
-                        break;
-
-                case KDBUS_ITEM_TID_COMM:
-                        if (mask & SD_BUS_CREDS_TID_COMM) {
-                                c->tid_comm = strdup(item->str);
-                                if (!c->tid_comm) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
-
-                                c->mask |= SD_BUS_CREDS_TID_COMM;
-                        }
-                        break;
-
-                case KDBUS_ITEM_EXE:
-                        if (mask & SD_BUS_CREDS_EXE) {
-                                c->exe = strdup(item->str);
-                                if (!c->exe) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
-
-                                c->mask |= SD_BUS_CREDS_EXE;
-                        }
-                        break;
-
-                case KDBUS_ITEM_CMDLINE:
-                        if (mask & SD_BUS_CREDS_CMDLINE) {
-                                c->cmdline_size = item->size - KDBUS_ITEM_HEADER_SIZE;
-                                c->cmdline = memdup(item->data, c->cmdline_size);
-                                if (!c->cmdline) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
-
-                                c->mask |= SD_BUS_CREDS_CMDLINE;
-                        }
-                        break;
-
-                case KDBUS_ITEM_CGROUP:
-                        m = (SD_BUS_CREDS_CGROUP | SD_BUS_CREDS_UNIT |
-                             SD_BUS_CREDS_USER_UNIT | SD_BUS_CREDS_SLICE |
-                             SD_BUS_CREDS_SESSION | SD_BUS_CREDS_OWNER_UID) & mask;
-
-                        if (m) {
-                                c->cgroup = strdup(item->str);
-                                if (!c->cgroup) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
-
-                                if (!bus->cgroup_root) {
-                                        r = cg_get_root_path(&bus->cgroup_root);
-                                        if (r < 0)
-                                                goto fail;
-                                }
-
-                                c->cgroup_root = strdup(bus->cgroup_root);
-                                if (!c->cgroup_root) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
-
-                                c->mask |= m;
-                        }
-                        break;
-
-                case KDBUS_ITEM_CAPS:
-                        m = (SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_PERMITTED_CAPS |
-                             SD_BUS_CREDS_INHERITABLE_CAPS | SD_BUS_CREDS_BOUNDING_CAPS) & mask;
-
-                        if (m) {
-                                c->capability_size = item->size - KDBUS_ITEM_HEADER_SIZE;
-                                c->capability = memdup(item->data, c->capability_size);
-                                if (!c->capability) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
-
-                                c->mask |= m;
-                        }
-                        break;
-
-                case KDBUS_ITEM_SECLABEL:
-                        if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
-                                c->label = strdup(item->str);
-                                if (!c->label) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
-
-                                c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
-                        }
-                        break;
-
-                case KDBUS_ITEM_AUDIT:
-                        m = (SD_BUS_CREDS_AUDIT_SESSION_ID | SD_BUS_CREDS_AUDIT_LOGIN_UID) & mask;
-
-                        if (m) {
-                                c->audit_session_id = item->audit.sessionid;
-                                c->audit_login_uid = item->audit.loginuid;
-                                c->mask |= m;
-                        }
-                        break;
-
-                case KDBUS_ITEM_NAME:
-                        if ((mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) && service_name_is_valid(item->name.name)) {
-                                r = strv_extend(&c->well_known_names, item->name.name);
-                                if (r < 0)
-                                        goto fail;
-
-                                c->mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES;
-                        }
-                        break;
-                }
-        }
-
-        if (creds) {
-                *creds = c;
-                c = NULL;
-        }
-
-        r = 0;
-
-fail:
-        ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd->offset);
-        return r;
-}
-
-static int bus_get_owner_dbus1(
-                sd_bus *bus,
-                const char *name,
-                uint64_t mask,
-                sd_bus_creds **creds) {
-
-        _cleanup_bus_message_unref_ sd_bus_message *reply_unique = NULL, *reply = NULL;
-        _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
-        const char *unique = NULL;
-        pid_t pid = 0;
-        int r;
-
-        /* Only query the owner if the caller wants to know it or if
-         * the caller just wants to check whether a name exists */
-        if ((mask & SD_BUS_CREDS_UNIQUE_NAME) || mask == 0) {
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.DBus",
-                                "/org/freedesktop/DBus",
-                                "org.freedesktop.DBus",
-                                "GetNameOwner",
-                                NULL,
-                                &reply_unique,
-                                "s",
-                                name);
-                if (r < 0)
-                        return r;
-
-                r = sd_bus_message_read(reply_unique, "s", &unique);
-                if (r < 0)
-                        return r;
-        }
-
-        if (mask != 0) {
-                c = bus_creds_new();
-                if (!c)
-                        return -ENOMEM;
-
-                if ((mask & SD_BUS_CREDS_UNIQUE_NAME) && unique) {
-                        c->unique_name = strdup(unique);
-                        if (!c->unique_name)
-                                return -ENOMEM;
-
-                        c->mask |= SD_BUS_CREDS_UNIQUE_NAME;
-                }
-
-                if (mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_PID_STARTTIME|SD_BUS_CREDS_GID|
-                            SD_BUS_CREDS_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE|
-                            SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|
-                            SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS|
-                            SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID)) {
-                        uint32_t u;
-
-                        r = sd_bus_call_method(
-                                        bus,
-                                        "org.freedesktop.DBus",
-                                        "/org/freedesktop/DBus",
-                                        "org.freedesktop.DBus",
-                                        "GetConnectionUnixProcessID",
-                                        NULL,
-                                        &reply,
-                                        "s",
-                                        unique ? unique : name);
-                        if (r < 0)
-                                return r;
-
-                        r = sd_bus_message_read(reply, "u", &u);
-                        if (r < 0)
-                                return r;
-
-                        pid = u;
-                        if (mask & SD_BUS_CREDS_PID) {
-                                c->pid = u;
-                                c->mask |= SD_BUS_CREDS_PID;
-                        }
-
-                        reply = sd_bus_message_unref(reply);
-                }
-
-                if (mask & SD_BUS_CREDS_UID) {
-                        uint32_t u;
-
-                        r = sd_bus_call_method(
-                                        bus,
-                                        "org.freedesktop.DBus",
-                                        "/org/freedesktop/DBus",
-                                        "org.freedesktop.DBus",
-                                        "GetConnectionUnixUser",
-                                        NULL,
-                                        &reply,
-                                        "s",
-                                        unique ? unique : name);
-                        if (r < 0)
-                                return r;
-
-                        r = sd_bus_message_read(reply, "u", &u);
-                        if (r < 0)
-                                return r;
-
-                        c->uid = u;
-                        c->mask |= SD_BUS_CREDS_UID;
-
-                        reply = sd_bus_message_unref(reply);
-                }
-
-                if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
-                        const void *p;
-                        size_t sz;
-
-                        r = sd_bus_call_method(
-                                        bus,
-                                        "org.freedesktop.DBus",
-                                        "/org/freedesktop/DBus",
-                                        "org.freedesktop.DBus",
-                                        "GetConnectionSELinuxSecurityContext",
-                                        NULL,
-                                        &reply,
-                                        "s",
-                                        unique ? unique : name);
-                        if (r < 0)
-                                return r;
-
-                        r = sd_bus_message_read_array(reply, 'y', &p, &sz);
-                        if (r < 0)
-                                return r;
-
-                        c->label = strndup(p, sz);
-                        if (!c->label)
-                                return -ENOMEM;
-
-                        c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
-                }
-
-                r = bus_creds_add_more(c, mask, pid, 0);
-                if (r < 0)
-                        return r;
-        }
-
-        if (creds) {
-                *creds = c;
-                c = NULL;
-        }
-
-        return 0;
-}
-
-_public_ int sd_bus_get_owner(
-                sd_bus *bus,
-                const char *name,
-                uint64_t mask,
-                sd_bus_creds **creds) {
-
-        assert_return(bus, -EINVAL);
-        assert_return(name, -EINVAL);
-        assert_return(mask <= _SD_BUS_CREDS_ALL, -ENOTSUP);
-        assert_return(mask == 0 || creds, -EINVAL);
-        assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
-        assert_return(!bus_pid_changed(bus), -ECHILD);
-        assert_return(service_name_is_valid(name), -EINVAL);
-        assert_return(bus->bus_client, -ENODATA);
-
-        if (bus->is_kernel)
-                return bus_get_owner_kdbus(bus, name, mask, creds);
-        else
-                return bus_get_owner_dbus1(bus, name, mask, creds);
-}
-
-static int add_name_change_match(sd_bus *bus,
-                                 uint64_t cookie,
-                                 const char *name,
-                                 const char *old_owner,
-                                 const char *new_owner) {
-
-        uint64_t name_id = KDBUS_MATCH_ID_ANY, old_owner_id = 0, new_owner_id = 0;
-        int is_name_id = -1, r;
-        struct kdbus_item *item;
-
-        assert(bus);
-
-        /* If we encounter a match that could match against
-         * NameOwnerChanged messages, then we need to create
-         * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE} and
-         * KDBUS_ITEM_ID_{ADD,REMOVE} matches for it, possibly
-         * multiple if the match is underspecified.
-         *
-         * The NameOwnerChanged signals take three parameters with
-         * unique or well-known names, but only some forms actually
-         * exist:
-         *
-         * WELLKNOWN, "", UNIQUE       → KDBUS_ITEM_NAME_ADD
-         * WELLKNOWN, UNIQUE, ""       → KDBUS_ITEM_NAME_REMOVE
-         * WELLKNOWN, UNIQUE, UNIQUE   → KDBUS_ITEM_NAME_CHANGE
-         * UNIQUE, "", UNIQUE          → KDBUS_ITEM_ID_ADD
-         * UNIQUE, UNIQUE, ""          → KDBUS_ITEM_ID_REMOVE
-         *
-         * For the latter two the two unique names must be identical.
-         *
-         * */
-
-        if (name) {
-                is_name_id = bus_kernel_parse_unique_name(name, &name_id);
-                if (is_name_id < 0)
-                        return 0;
-        }
-
-        if (!isempty(old_owner)) {
-                r = bus_kernel_parse_unique_name(old_owner, &old_owner_id);
-                if (r < 0)
-                        return 0;
-                if (r == 0)
-                        return 0;
-                if (is_name_id > 0 && old_owner_id != name_id)
-                        return 0;
-        } else
-                old_owner_id = KDBUS_MATCH_ID_ANY;
-
-        if (!isempty(new_owner)) {
-                r = bus_kernel_parse_unique_name(new_owner, &new_owner_id);
-                if (r < 0)
-                        return r;
-                if (r == 0)
-                        return 0;
-                if (is_name_id > 0 && new_owner_id != name_id)
-                        return 0;
-        } else
-                new_owner_id = KDBUS_MATCH_ID_ANY;
-
-        if (is_name_id <= 0) {
-                struct kdbus_cmd_match *m;
-                size_t sz, l;
-
-                /* If the name argument is missing or is a well-known
-                 * name, then add KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE}
-                 * matches for it */
-
-                l = name ? strlen(name) + 1 : 0;
-
-                sz = ALIGN8(offsetof(struct kdbus_cmd_match, items) +
-                            offsetof(struct kdbus_item, name_change) +
-                            offsetof(struct kdbus_notify_name_change, name) +
-                            l);
-
-                m = alloca0(sz);
-                m->size = sz;
-                m->cookie = cookie;
-
-                item = m->items;
-                item->size =
-                        offsetof(struct kdbus_item, name_change) +
-                        offsetof(struct kdbus_notify_name_change, name) +
-                        l;
-
-                item->name_change.old.id = old_owner_id;
-                item->name_change.new.id = new_owner_id;
-
-                if (name)
-                        memcpy(item->name_change.name, name, l);
-
-                /* If the old name is unset or empty, then
-                 * this can match against added names */
-                if (!old_owner || old_owner[0] == 0) {
-                        item->type = KDBUS_ITEM_NAME_ADD;
-
-                        r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
-                        if (r < 0)
-                                return -errno;
-                }
-
-                /* If the new name is unset or empty, then
-                 * this can match against removed names */
-                if (!new_owner || new_owner[0] == 0) {
-                        item->type = KDBUS_ITEM_NAME_REMOVE;
-
-                        r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
-                        if (r < 0)
-                                return -errno;
-                }
-
-                /* The CHANGE match we need in either case, because
-                 * what is reported as a name change by the kernel
-                 * might just be an owner change between starter and
-                 * normal clients. For userspace such a change should
-                 * be considered a removal/addition, hence let's
-                 * subscribe to this unconditionally. */
-                item->type = KDBUS_ITEM_NAME_CHANGE;
-                r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
-                if (r < 0)
-                        return -errno;
-        }
-
-        if (is_name_id != 0) {
-                struct kdbus_cmd_match *m;
-                uint64_t sz;
-
-                /* If the name argument is missing or is a unique
-                 * name, then add KDBUS_ITEM_ID_{ADD,REMOVE} matches
-                 * for it */
-
-                sz = ALIGN8(offsetof(struct kdbus_cmd_match, items) +
-                            offsetof(struct kdbus_item, id_change) +
-                            sizeof(struct kdbus_notify_id_change));
-
-                m = alloca0(sz);
-                m->size = sz;
-                m->cookie = cookie;
-
-                item = m->items;
-                item->size =
-                        offsetof(struct kdbus_item, id_change) +
-                        sizeof(struct kdbus_notify_id_change);
-                item->id_change.id = name_id;
-
-                /* If the old name is unset or empty, then this can
-                 * match against added ids */
-                if (!old_owner || old_owner[0] == 0) {
-                        item->type = KDBUS_ITEM_ID_ADD;
-
-                        r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
-                        if (r < 0)
-                                return -errno;
-                }
-
-                /* If thew new name is unset or empty, then this can
-                 * match against removed ids */
-                if (!new_owner || new_owner[0] == 0) {
-                        item->type = KDBUS_ITEM_ID_REMOVE;
-
-                        r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
-                        if (r < 0)
-                                return -errno;
-                }
-        }
-
-        return 0;
-}
-
-int bus_add_match_internal_kernel(
-                sd_bus *bus,
-                uint64_t id,
-                struct bus_match_component *components,
-                unsigned n_components,
-                uint64_t cookie) {
-
-        struct kdbus_cmd_match *m;
-        struct kdbus_item *item;
-        uint64_t bloom[BLOOM_SIZE/8];
-        size_t sz;
-        const char *sender = NULL;
-        size_t sender_length = 0;
-        uint64_t src_id = KDBUS_MATCH_ID_ANY;
-        bool using_bloom = false;
-        unsigned i;
-        bool matches_name_change = true;
-        const char *name_change_arg[3] = {};
-        int r;
-
-        assert(bus);
-
-        zero(bloom);
-
-        sz = ALIGN8(offsetof(struct kdbus_cmd_match, items));
-
-        for (i = 0; i < n_components; i++) {
-                struct bus_match_component *c = &components[i];
-
-                switch (c->type) {
-
-                case BUS_MATCH_SENDER:
-                        if (!streq(c->value_str, "org.freedesktop.DBus"))
-                                matches_name_change = false;
-
-                        r = bus_kernel_parse_unique_name(c->value_str, &src_id);
-                        if (r < 0)
-                                return r;
-                        else if (r > 0)
-                                sz += ALIGN8(offsetof(struct kdbus_item, id) + sizeof(uint64_t));
-                        else  {
-                                sender = c->value_str;
-                                sender_length = strlen(sender);
-                                sz += ALIGN8(offsetof(struct kdbus_item, str) + sender_length + 1);
-                        }
-
-                        break;
-
-                case BUS_MATCH_MESSAGE_TYPE:
-                        if (c->value_u8 != SD_BUS_MESSAGE_SIGNAL)
-                                matches_name_change = false;
-
-                        bloom_add_pair(bloom, "message-type", bus_message_type_to_string(c->value_u8));
-                        using_bloom = true;
-                        break;
-
-                case BUS_MATCH_INTERFACE:
-                        if (!streq(c->value_str, "org.freedesktop.DBus"))
-                                matches_name_change = false;
-
-                        bloom_add_pair(bloom, "interface", c->value_str);
-                        using_bloom = true;
-                        break;
-
-                case BUS_MATCH_MEMBER:
-                        if (!streq(c->value_str, "NameOwnerChanged"))
-                                matches_name_change = false;
-
-                        bloom_add_pair(bloom, "member", c->value_str);
-                        using_bloom = true;
-                        break;
-
-                case BUS_MATCH_PATH:
-                        if (!streq(c->value_str, "/org/freedesktop/DBus"))
-                                matches_name_change = false;
-
-                        bloom_add_pair(bloom, "path", c->value_str);
-                        using_bloom = true;
-                        break;
-
-                case BUS_MATCH_PATH_NAMESPACE:
-                        if (!streq(c->value_str, "/")) {
-                                bloom_add_pair(bloom, "path-slash-prefix", c->value_str);
-                                using_bloom = true;
-                        }
-                        break;
-
-                case BUS_MATCH_ARG...BUS_MATCH_ARG_LAST: {
-                        char buf[sizeof("arg")-1 + 2 + 1];
-
-                        if (c->type - BUS_MATCH_ARG < 3)
-                                name_change_arg[c->type - BUS_MATCH_ARG] = c->value_str;
-
-                        snprintf(buf, sizeof(buf), "arg%u", c->type - BUS_MATCH_ARG);
-                        bloom_add_pair(bloom, buf, c->value_str);
-                        using_bloom = true;
-                        break;
-                }
-
-                case BUS_MATCH_ARG_PATH...BUS_MATCH_ARG_PATH_LAST: {
-                        char buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
-
-                        snprintf(buf, sizeof(buf), "arg%u-slash-prefix", c->type - BUS_MATCH_ARG_PATH);
-                        bloom_add_pair(bloom, buf, c->value_str);
-                        using_bloom = true;
-                        break;
-                }
-
-                case BUS_MATCH_ARG_NAMESPACE...BUS_MATCH_ARG_NAMESPACE_LAST: {
-                        char buf[sizeof("arg")-1 + 2 + sizeof("-dot-prefix")];
-
-                        snprintf(buf, sizeof(buf), "arg%u-dot-prefix", c->type - BUS_MATCH_ARG_NAMESPACE);
-                        bloom_add_pair(bloom, buf, c->value_str);
-                        using_bloom = true;
-                        break;
-                }
-
-                case BUS_MATCH_DESTINATION:
-                        /* The bloom filter does not include
-                           the destination, since it is only
-                           available for broadcast messages
-                           which do not carry a destination
-                           since they are undirected. */
-                        break;
-
-                case BUS_MATCH_ROOT:
-                case BUS_MATCH_VALUE:
-                case BUS_MATCH_LEAF:
-                case _BUS_MATCH_NODE_TYPE_MAX:
-                case _BUS_MATCH_NODE_TYPE_INVALID:
-                        assert_not_reached("Invalid match type?");
-                }
-        }
-
-        if (using_bloom)
-                sz += ALIGN8(offsetof(struct kdbus_item, data64) + BLOOM_SIZE);
-
-        m = alloca0(sz);
-        m->size = sz;
-        m->cookie = cookie;
-        m->owner_id = id;
-
-        item = m->items;
-
-        if (src_id != KDBUS_MATCH_ID_ANY) {
-                item->size = offsetof(struct kdbus_item, id) + sizeof(uint64_t);
-                item->type = KDBUS_ITEM_ID;
-                item->id = src_id;
-                item = KDBUS_ITEM_NEXT(item);
-        }
-
-        if (using_bloom) {
-                item->size = offsetof(struct kdbus_item, data64) + BLOOM_SIZE;
-                item->type = KDBUS_ITEM_BLOOM;
-                memcpy(item->data64, bloom, BLOOM_SIZE);
-                item = KDBUS_ITEM_NEXT(item);
-        }
-
-        if (sender) {
-                item->size = offsetof(struct kdbus_item, str) + sender_length + 1;
-                item->type = KDBUS_ITEM_NAME;
-                memcpy(item->str, sender, sender_length + 1);
-        }
-
-        r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
-        if (r < 0)
-                return -errno;
-
-        if (matches_name_change) {
-
-                /* If this match could theoretically match
-                 * NameOwnerChanged messages, we need to
-                 * install a second non-bloom filter explitly
-                 * for it */
-
-                r = add_name_change_match(bus, cookie, name_change_arg[0], name_change_arg[1], name_change_arg[2]);
-                if (r < 0)
-                        return r;
-        }
-
-        return 0;
-}
-
-static int bus_add_match_internal_dbus1(
-                sd_bus *bus,
-                const char *match) {
-
-        assert(bus);
-        assert(match);
-
-        return sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.DBus",
-                        "/org/freedesktop/DBus",
-                        "org.freedesktop.DBus",
-                        "AddMatch",
-                        NULL,
-                        NULL,
-                        "s",
-                        match);
-}
-
-int bus_add_match_internal(
-                sd_bus *bus,
-                const char *match,
-                struct bus_match_component *components,
-                unsigned n_components,
-                uint64_t cookie) {
-
-        assert(bus);
-        assert(match);
-
-        if (bus->is_kernel)
-                return bus_add_match_internal_kernel(bus, 0, components, n_components, cookie);
-        else
-                return bus_add_match_internal_dbus1(bus, match);
-}
-
-int bus_remove_match_internal_kernel(
-                sd_bus *bus,
-                uint64_t id,
-                uint64_t cookie) {
-
-        struct kdbus_cmd_match m;
-        int r;
-
-        assert(bus);
-
-        zero(m);
-        m.size = offsetof(struct kdbus_cmd_match, items);
-        m.cookie = cookie;
-        m.owner_id = id;
-
-        r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_REMOVE, &m);
-        if (r < 0)
-                return -errno;
-
-        return 0;
-}
-
-static int bus_remove_match_internal_dbus1(
-                sd_bus *bus,
-                const char *match) {
-
-        assert(bus);
-        assert(match);
-
-        return sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.DBus",
-                        "/org/freedesktop/DBus",
-                        "org.freedesktop.DBus",
-                        "RemoveMatch",
-                        NULL,
-                        NULL,
-                        "s",
-                        match);
-}
-
-int bus_remove_match_internal(
-                sd_bus *bus,
-                const char *match,
-                uint64_t cookie) {
-
-        assert(bus);
-        assert(match);
-
-        if (bus->is_kernel)
-                return bus_remove_match_internal_kernel(bus, 0, cookie);
-        else
-                return bus_remove_match_internal_dbus1(bus, match);
-}
-
-_public_ int sd_bus_get_owner_machine_id(sd_bus *bus, const char *name, sd_id128_t *machine) {
-        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
-        const char *mid;
-        int r;
-
-        assert_return(bus, -EINVAL);
-        assert_return(name, -EINVAL);
-        assert_return(machine, -EINVAL);
-        assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
-        assert_return(!bus_pid_changed(bus), -ECHILD);
-        assert_return(service_name_is_valid(name), -EINVAL);
-
-        if (streq_ptr(name, bus->unique_name))
-                return sd_id128_get_machine(machine);
-
-        r = sd_bus_message_new_method_call(
-                        bus,
-                        name,
-                        "/",
-                        "org.freedesktop.DBus.Peer",
-                        "GetMachineId", &m);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_set_no_auto_start(m, true);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_call(bus, m, 0, NULL, &reply);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_read(reply, "s", &mid);
-        if (r < 0)
-                return r;
-
-        return sd_id128_from_string(mid, machine);
-}