src/login/logind-user.c

	logind-user.c revision 49e942b2bc9fdedba79cd266a076ce9c9d91fc13
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering/***
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  This file is part of systemd.
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  Copyright 2011 Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  systemd is free software; you can redistribute it and/or modify it
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  under the terms of the GNU General Public License as published by
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  the Free Software Foundation; either version 2 of the License, or
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  (at your option) any later version.
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  systemd is distributed in the hope that it will be useful, but
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  General Public License for more details.
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  You should have received a copy of the GNU General Public License
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering***/
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include <string.h>
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include <unistd.h>
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include <errno.h>
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "logind-user.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "util.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "mkdir.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "cgroup-util.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "hashmap.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "strv.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringUser* user_new(Manager *m, uid_t uid, gid_t gid, const char *name) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        User *u;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(m);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u = new0(User, 1);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->name = strdup(name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u->name) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (asprintf(&u->state_file, "/run/systemd/users/%lu", (unsigned long) uid) < 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(u->name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (hashmap_put(m->users, ULONG_TO_PTR((unsigned long) uid), u) < 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(u->state_file);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(u->name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->manager = m;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->uid = uid;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->gid = gid;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return u;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringvoid user_free(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->in_gc_queue)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                LIST_REMOVE(User, gc_queue, u->manager->user_gc_queue, u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        while (u->sessions)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                session_free(u->sessions);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(u->cgroup_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(u->service);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(u->runtime_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        hashmap_remove(u->manager->users, ULONG_TO_PTR((unsigned long) u->uid));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(u->name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(u->state_file);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint user_save(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        FILE *f;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        char *temp_path;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u->state_file);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u->started)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = safe_mkdir("/run/systemd/users", 0755, 0, 0);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                goto finish;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = fopen_temporary(u->state_file, &f, &temp_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                goto finish;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        fchmod(fileno(f), 0644);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                "# This is private data. Do not parse.\n"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                "NAME=%s\n"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                "STATE=%s\n",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                u->name,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                user_state_to_string(user_get_state(u)));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->cgroup_path)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        "CGROUP=%s\n",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        u->cgroup_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->runtime_path)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        "RUNTIME=%s\n",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        u->runtime_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->service)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        "SERVICE=%s\n",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        u->service);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->display)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        "DISPLAY=%s\n",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        u->display->id);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->sessions) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                Session *i;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                fputs("SESSIONS=", f);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                LIST_FOREACH(sessions_by_user, i, u->sessions) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                "%s%c",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                i->id,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                i->sessions_by_user_next ? ' ' : '\n');
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                fputs("SEATS=", f);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                LIST_FOREACH(sessions_by_user, i, u->sessions) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        if (i->seat)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        "%s%c",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        i->seat->id,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        i->sessions_by_user_next ? ' ' : '\n');
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                fputs("ACTIVE_SESSIONS=", f);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                LIST_FOREACH(sessions_by_user, i, u->sessions)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        if (session_is_active(i))
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        "%lu%c",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        (unsigned long) i->user->uid,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        i->sessions_by_user_next ? ' ' : '\n');
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                fputs("ACTIVE_SEATS=", f);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                LIST_FOREACH(sessions_by_user, i, u->sessions) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        if (session_is_active(i) && i->seat)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                fprintf(f,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        "%s%c",
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        i->seat->id,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        i->sessions_by_user_next ? ' ' : '\n');
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        fflush(f);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (ferror(f) || rename(temp_path, u->state_file) < 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = -errno;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                unlink(u->state_file);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                unlink(temp_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        fclose(f);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(temp_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringfinish:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                log_error("Failed to save user data for %s: %s", u->name, strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint user_load(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        char *display = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        Session *s = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = parse_env_file(u->state_file, NEWLINE,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                           "CGROUP", &u->cgroup_path,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                           "RUNTIME", &u->runtime_path,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                           "SERVICE", &u->service,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                           "DISPLAY", &display,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                           NULL);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(display);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (r == -ENOENT)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                log_error("Failed to read %s: %s", u->state_file, strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (display) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                s = hashmap_get(u->manager->sessions, display);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(display);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (s && s->display && display_is_local(s->display))
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                u->display = s;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int user_mkdir_runtime_path(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        char *p;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = safe_mkdir("/run/user", 0755, 0, 0);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                log_error("Failed to create /run/user: %s", strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u->runtime_path) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                p = strappend("/run/user/", u->name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (!p) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        log_error("Out of memory");
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return -ENOMEM;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        } else
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                p = u->runtime_path;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = safe_mkdir(p, 0700, u->uid, u->gid);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                log_error("Failed to create runtime directory %s: %s", p, strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(p);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                u->runtime_path = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->runtime_path = p;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int user_create_cgroup(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        char **k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        char *p;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u->cgroup_path) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (asprintf(&p, "%s/%s", u->manager->cgroup_path, u->name) < 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        log_error("Out of memory");
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return -ENOMEM;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        } else
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                p = u->cgroup_path;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = cg_create(SYSTEMD_CGROUP_CONTROLLER, p);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                log_error("Failed to create cgroup "SYSTEMD_CGROUP_CONTROLLER":%s: %s", p, strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(p);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                u->cgroup_path = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->cgroup_path = p;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        STRV_FOREACH(k, u->manager->controllers) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (strv_contains(u->manager->reset_controllers, *k))
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        continue;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = cg_create(*k, p);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        log_warning("Failed to create cgroup %s:%s: %s", *k, p, strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int user_start_service(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        /* FIXME: Fill me in later ... */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint user_start(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->started)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        log_debug("New user %s logged in.", u->name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        /* Make XDG_RUNTIME_DIR */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = user_mkdir_runtime_path(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        /* Create cgroup */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = user_create_cgroup(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        /* Spawn user systemd */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = user_start_service(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        dual_timestamp_get(&u->timestamp);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->started = true;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        /* Save new user data */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        user_save(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        user_send_signal(u, true);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int user_stop_service(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u->service)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int user_shall_kill(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u->manager->kill_user_processes)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return false;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (strv_contains(u->manager->kill_exclude_users, u->name))
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return false;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (strv_isempty(u->manager->kill_only_users))
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return true;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return strv_contains(u->manager->kill_only_users, u->name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int user_terminate_cgroup(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        char **k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u->cgroup_path)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        cg_trim(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, false);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (user_shall_kill(u)) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, true);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        log_error("Failed to kill user cgroup: %s", strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        } else {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, true);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        log_error("Failed to check user cgroup: %s", strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                else if (r > 0) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        r = cg_delete(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                log_error("Failed to delete user cgroup: %s", strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                } else
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        r = -EBUSY;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        STRV_FOREACH(k, u->manager->controllers)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                cg_trim(*k, u->cgroup_path, true);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(u->cgroup_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->cgroup_path = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int user_remove_runtime_path(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!u->runtime_path)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = rm_rf(u->runtime_path, false, true, false);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                log_error("Failed to remove runtime directory %s: %s", u->runtime_path, strerror(-r));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(u->runtime_path);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->runtime_path = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint user_stop(User *u) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        Session *s;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r = 0, k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->started)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                log_debug("User %s logged out.", u->name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        LIST_FOREACH(sessions_by_user, s, u->sessions) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                k = session_stop(s);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (k < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        r = k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        /* Kill systemd */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k = user_stop_service(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (k < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        /* Kill cgroup */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k = user_terminate_cgroup(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (k < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        /* Kill XDG_RUNTIME_DIR */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k = user_remove_runtime_path(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (k < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        unlink(u->state_file);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        user_add_to_gc_queue(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (u->started)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                user_send_signal(u, false);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        u->started = false;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint user_get_idle_hint(User *u, dual_timestamp *t) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        Session *s;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        bool idle_hint = true;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        dual_timestamp ts = { 0, 0 };
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(u);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        LIST_FOREACH(sessions_by_user, s, u->sessions) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                dual_timestamp k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                int ih;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                ih = session_get_idle_hint(s, &k);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (ih < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return ih;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (!ih) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        if (!idle_hint) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                if (k.monotonic < ts.monotonic)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                        ts = k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        } else {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                idle_hint = false;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                ts = k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                } else if (idle_hint) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
                        if (k.monotonic > ts.monotonic)
                                ts = k;
                }
        }

        if (t)
                *t = ts;

        return idle_hint;
}

int user_check_gc(User *u, bool drop_not_started) {
        int r;
        char *p;

        assert(u);

        if (drop_not_started && !u->started)
                return 0;

        if (u->sessions)
                return 1;

        if (asprintf(&p, "/var/lib/systemd/linger/%s", u->name) < 0)
                return -ENOMEM;

        r = access(p, F_OK) >= 0;
        free(p);

        if (r > 0)
                return 1;

        if (u->cgroup_path) {
                r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, false);
                if (r < 0)
                        return r;

                if (r <= 0)
                        return 1;
        }

        return 0;
}

void user_add_to_gc_queue(User *u) {
        assert(u);

        if (u->in_gc_queue)
                return;

        LIST_PREPEND(User, gc_queue, u->manager->user_gc_queue, u);
        u->in_gc_queue = true;
}

UserState user_get_state(User *u) {
        Session *i;

        assert(u);

        if (!u->sessions)
                return USER_LINGERING;

        LIST_FOREACH(sessions_by_user, i, u->sessions)
                if (session_is_active(i))
                        return USER_ACTIVE;

        return USER_ONLINE;
}

int user_kill(User *u, int signo) {
        int r = 0, q;
        Set *pid_set = NULL;

        assert(u);

        if (!u->cgroup_path)
                return -ESRCH;

        pid_set = set_new(trivial_hash_func, trivial_compare_func);
        if (!pid_set)
                return -ENOMEM;

        q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set);
        if (q < 0)
                if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
                        r = q;

        if (pid_set)
                set_free(pid_set);

        return r;
}

static const char* const user_state_table[_USER_STATE_MAX] = {
        [USER_OFFLINE] = "offline",
        [USER_LINGERING] = "lingering",
        [USER_ONLINE] = "online",
        [USER_ACTIVE] = "active"
};

DEFINE_STRING_TABLE_LOOKUP(user_state, UserState);