Isolation of udev code from remaining systemd

This commit is a first attempt to isolate the udev code from the
remaining code base.  It intentionally does not modify any files
but purely delete files which, on a first examination, appear to
not be needed.  This is a sweeping commit which may easily have
missed needed code.  Files can be retrieved by doing a checkout
from the previous commit:

 git checkout 2944f347d0 -- <filename>

1 files changed, 0 insertions, 656 deletions

diff --git a/src/login/logind-user.c b/src/login/logind-user.c
deleted file mode 100644
index b692b533e2..0000000000
--- a/src/login/logind-user.c
+++ /dev/null
@@ -1,656 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2011 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include "logind-user.h"
-#include "util.h"
-#include "mkdir.h"
-#include "cgroup-util.h"
-#include "hashmap.h"
-#include "strv.h"
-
-User* user_new(Manager *m, uid_t uid, gid_t gid, const char *name) {
-        User *u;
-
-        assert(m);
-        assert(name);
-
-        u = new0(User, 1);
-        if (!u)
-                return NULL;
-
-        u->name = strdup(name);
-        if (!u->name) {
-                free(u);
-                return NULL;
-        }
-
-        if (asprintf(&u->state_file, "/run/systemd/users/%lu", (unsigned long) uid) < 0) {
-                free(u->name);
-                free(u);
-                return NULL;
-        }
-
-        if (hashmap_put(m->users, ULONG_TO_PTR((unsigned long) uid), u) < 0) {
-                free(u->state_file);
-                free(u->name);
-                free(u);
-                return NULL;
-        }
-
-        u->manager = m;
-        u->uid = uid;
-        u->gid = gid;
-
-        return u;
-}
-
-void user_free(User *u) {
-        assert(u);
-
-        if (u->in_gc_queue)
-                LIST_REMOVE(User, gc_queue, u->manager->user_gc_queue, u);
-
-        while (u->sessions)
-                session_free(u->sessions);
-
-        if (u->cgroup_path)
-                hashmap_remove(u->manager->user_cgroups, u->cgroup_path);
-        free(u->cgroup_path);
-
-        free(u->service);
-        free(u->runtime_path);
-
-        hashmap_remove(u->manager->users, ULONG_TO_PTR((unsigned long) u->uid));
-
-        free(u->name);
-        free(u->state_file);
-        free(u);
-}
-
-int user_save(User *u) {
-        FILE *f;
-        int r;
-        char *temp_path;
-
-        assert(u);
-        assert(u->state_file);
-
-        if (!u->started)
-                return 0;
-
-        r = mkdir_safe_label("/run/systemd/users", 0755, 0, 0);
-        if (r < 0)
-                goto finish;
-
-        r = fopen_temporary(u->state_file, &f, &temp_path);
-        if (r < 0)
-                goto finish;
-
-        fchmod(fileno(f), 0644);
-
-        fprintf(f,
-                "# This is private data. Do not parse.\n"
-                "NAME=%s\n"
-                "STATE=%s\n",
-                u->name,
-                user_state_to_string(user_get_state(u)));
-
-        if (u->cgroup_path)
-                fprintf(f,
-                        "CGROUP=%s\n",
-                        u->cgroup_path);
-
-        if (u->runtime_path)
-                fprintf(f,
-                        "RUNTIME=%s\n",
-                        u->runtime_path);
-
-        if (u->service)
-                fprintf(f,
-                        "SERVICE=%s\n",
-                        u->service);
-
-        if (u->display)
-                fprintf(f,
-                        "DISPLAY=%s\n",
-                        u->display->id);
-
-        if (u->sessions) {
-                Session *i;
-                bool first;
-
-                fputs("SESSIONS=", f);
-                first = true;
-                LIST_FOREACH(sessions_by_user, i, u->sessions) {
-                        if (first)
-                                first = false;
-                        else
-                                fputc(' ', f);
-
-                        fputs(i->id, f);
-                }
-
-                fputs("\nSEATS=", f);
-                first = true;
-                LIST_FOREACH(sessions_by_user, i, u->sessions) {
-                        if (!i->seat)
-                                continue;
-
-                        if (first)
-                                first = false;
-                        else
-                                fputc(' ', f);
-
-                        fputs(i->seat->id, f);
-                }
-
-                fputs("\nACTIVE_SESSIONS=", f);
-                first = true;
-                LIST_FOREACH(sessions_by_user, i, u->sessions) {
-                        if (!session_is_active(i))
-                                continue;
-
-                        if (first)
-                                first = false;
-                        else
-                                fputc(' ', f);
-
-                        fputs(i->id, f);
-                }
-
-                fputs("\nONLINE_SESSIONS=", f);
-                first = true;
-                LIST_FOREACH(sessions_by_user, i, u->sessions) {
-                        if (session_get_state(i) == SESSION_CLOSING)
-                                continue;
-
-                        if (first)
-                                first = false;
-                        else
-                                fputc(' ', f);
-
-                        fputs(i->id, f);
-                }
-
-                fputs("\nACTIVE_SEATS=", f);
-                first = true;
-                LIST_FOREACH(sessions_by_user, i, u->sessions) {
-                        if (!session_is_active(i) || !i->seat)
-                                continue;
-
-                        if (first)
-                                first = false;
-                        else
-                                fputc(' ', f);
-
-                        fputs(i->seat->id, f);
-                }
-
-                fputs("\nONLINE_SEATS=", f);
-                first = true;
-                LIST_FOREACH(sessions_by_user, i, u->sessions) {
-                        if (session_get_state(i) == SESSION_CLOSING || !i->seat)
-                                continue;
-
-                        if (first)
-                                first = false;
-                        else
-                                fputc(' ', f);
-
-                        fputs(i->seat->id, f);
-                }
-                fputc('\n', f);
-        }
-
-        fflush(f);
-
-        if (ferror(f) || rename(temp_path, u->state_file) < 0) {
-                r = -errno;
-                unlink(u->state_file);
-                unlink(temp_path);
-        }
-
-        fclose(f);
-        free(temp_path);
-
-finish:
-        if (r < 0)
-                log_error("Failed to save user data for %s: %s", u->name, strerror(-r));
-
-        return r;
-}
-
-int user_load(User *u) {
-        int r;
-        char *display = NULL;
-        Session *s = NULL;
-
-        assert(u);
-
-        r = parse_env_file(u->state_file, NEWLINE,
-                           "CGROUP", &u->cgroup_path,
-                           "RUNTIME", &u->runtime_path,
-                           "SERVICE", &u->service,
-                           "DISPLAY", &display,
-                           NULL);
-        if (r < 0) {
-                free(display);
-
-                if (r == -ENOENT)
-                        return 0;
-
-                log_error("Failed to read %s: %s", u->state_file, strerror(-r));
-                return r;
-        }
-
-        if (display) {
-                s = hashmap_get(u->manager->sessions, display);
-                free(display);
-        }
-
-        if (s && s->display && display_is_local(s->display))
-                u->display = s;
-
-        return r;
-}
-
-static int user_mkdir_runtime_path(User *u) {
-        char *p;
-        int r;
-
-        assert(u);
-
-        r = mkdir_safe_label("/run/user", 0755, 0, 0);
-        if (r < 0) {
-                log_error("Failed to create /run/user: %s", strerror(-r));
-                return r;
-        }
-
-        if (!u->runtime_path) {
-                if (asprintf(&p, "/run/user/%lu", (unsigned long) u->uid) < 0)
-                        return log_oom();
-        } else
-                p = u->runtime_path;
-
-        r = mkdir_safe_label(p, 0700, u->uid, u->gid);
-        if (r < 0) {
-                log_error("Failed to create runtime directory %s: %s", p, strerror(-r));
-                free(p);
-                u->runtime_path = NULL;
-                return r;
-        }
-
-        u->runtime_path = p;
-        return 0;
-}
-
-static int user_create_cgroup(User *u) {
-        char **k;
-        char *p;
-        int r;
-
-        assert(u);
-
-        if (!u->cgroup_path) {
-                if (asprintf(&p, "%s/%s", u->manager->cgroup_path, u->name) < 0)
-                        return log_oom();
-        } else
-                p = u->cgroup_path;
-
-        r = cg_create(SYSTEMD_CGROUP_CONTROLLER, p);
-        if (r < 0) {
-                log_error("Failed to create cgroup "SYSTEMD_CGROUP_CONTROLLER":%s: %s", p, strerror(-r));
-                free(p);
-                u->cgroup_path = NULL;
-                return r;
-        }
-
-        u->cgroup_path = p;
-
-        STRV_FOREACH(k, u->manager->controllers) {
-
-                if (strv_contains(u->manager->reset_controllers, *k))
-                        continue;
-
-                r = cg_create(*k, p);
-                if (r < 0)
-                        log_warning("Failed to create cgroup %s:%s: %s", *k, p, strerror(-r));
-        }
-
-        r = hashmap_put(u->manager->user_cgroups, u->cgroup_path, u);
-        if (r < 0)
-                log_warning("Failed to create mapping between cgroup and user");
-
-        return 0;
-}
-
-static int user_start_service(User *u) {
-        assert(u);
-
-        /* FIXME: Fill me in later ... */
-
-        return 0;
-}
-
-int user_start(User *u) {
-        int r;
-
-        assert(u);
-
-        if (u->started)
-                return 0;
-
-        log_debug("New user %s logged in.", u->name);
-
-        /* Make XDG_RUNTIME_DIR */
-        r = user_mkdir_runtime_path(u);
-        if (r < 0)
-                return r;
-
-        /* Create cgroup */
-        r = user_create_cgroup(u);
-        if (r < 0)
-                return r;
-
-        /* Spawn user systemd */
-        r = user_start_service(u);
-        if (r < 0)
-                return r;
-
-        dual_timestamp_get(&u->timestamp);
-
-        u->started = true;
-
-        /* Save new user data */
-        user_save(u);
-
-        user_send_signal(u, true);
-
-        return 0;
-}
-
-static int user_stop_service(User *u) {
-        assert(u);
-
-        if (!u->service)
-                return 0;
-
-        return 0;
-}
-
-static int user_shall_kill(User *u) {
-        assert(u);
-
-        if (!u->manager->kill_user_processes)
-                return false;
-
-        if (strv_contains(u->manager->kill_exclude_users, u->name))
-                return false;
-
-        if (strv_isempty(u->manager->kill_only_users))
-                return true;
-
-        return strv_contains(u->manager->kill_only_users, u->name);
-}
-
-static int user_terminate_cgroup(User *u) {
-        int r;
-        char **k;
-
-        assert(u);
-
-        if (!u->cgroup_path)
-                return 0;
-
-        cg_trim(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, false);
-
-        if (user_shall_kill(u)) {
-
-                r = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, true);
-                if (r < 0)
-                        log_error("Failed to kill user cgroup: %s", strerror(-r));
-        } else {
-
-                r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, true);
-                if (r < 0)
-                        log_error("Failed to check user cgroup: %s", strerror(-r));
-                else if (r > 0) {
-                        r = cg_delete(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path);
-                        if (r < 0)
-                                log_error("Failed to delete user cgroup: %s", strerror(-r));
-                } else
-                        r = -EBUSY;
-        }
-
-        STRV_FOREACH(k, u->manager->controllers)
-                cg_trim(*k, u->cgroup_path, true);
-
-        hashmap_remove(u->manager->user_cgroups, u->cgroup_path);
-
-        free(u->cgroup_path);
-        u->cgroup_path = NULL;
-
-        return r;
-}
-
-static int user_remove_runtime_path(User *u) {
-        int r;
-
-        assert(u);
-
-        if (!u->runtime_path)
-                return 0;
-
-        r = rm_rf(u->runtime_path, false, true, false);
-        if (r < 0)
-                log_error("Failed to remove runtime directory %s: %s", u->runtime_path, strerror(-r));
-
-        free(u->runtime_path);
-        u->runtime_path = NULL;
-
-        return r;
-}
-
-int user_stop(User *u) {
-        Session *s;
-        int r = 0, k;
-        assert(u);
-
-        if (u->started)
-                log_debug("User %s logged out.", u->name);
-
-        LIST_FOREACH(sessions_by_user, s, u->sessions) {
-                k = session_stop(s);
-                if (k < 0)
-                        r = k;
-        }
-
-        /* Kill systemd */
-        k = user_stop_service(u);
-        if (k < 0)
-                r = k;
-
-        /* Kill cgroup */
-        k = user_terminate_cgroup(u);
-        if (k < 0)
-                r = k;
-
-        /* Kill XDG_RUNTIME_DIR */
-        k = user_remove_runtime_path(u);
-        if (k < 0)
-                r = k;
-
-        unlink(u->state_file);
-        user_add_to_gc_queue(u);
-
-        if (u->started)
-                user_send_signal(u, false);
-
-        u->started = false;
-
-        return r;
-}
-
-int user_get_idle_hint(User *u, dual_timestamp *t) {
-        Session *s;
-        bool idle_hint = true;
-        dual_timestamp ts = { 0, 0 };
-
-        assert(u);
-
-        LIST_FOREACH(sessions_by_user, s, u->sessions) {
-                dual_timestamp k;
-                int ih;
-
-                ih = session_get_idle_hint(s, &k);
-                if (ih < 0)
-                        return ih;
-
-                if (!ih) {
-                        if (!idle_hint) {
-                                if (k.monotonic < ts.monotonic)
-                                        ts = k;
-                        } else {
-                                idle_hint = false;
-                                ts = k;
-                        }
-                } else if (idle_hint) {
-
-                        if (k.monotonic > ts.monotonic)
-                                ts = k;
-                }
-        }
-
-        if (t)
-                *t = ts;
-
-        return idle_hint;
-}
-
-static int user_check_linger_file(User *u) {
-        char *p;
-        int r;
-
-        if (asprintf(&p, "/var/lib/systemd/linger/%s", u->name) < 0)
-                return -ENOMEM;
-
-        r = access(p, F_OK) >= 0;
-        free(p);
-
-        return r;
-}
-
-int user_check_gc(User *u, bool drop_not_started) {
-        int r;
-
-        assert(u);
-
-        if (drop_not_started && !u->started)
-                return 0;
-
-        if (u->sessions)
-                return 1;
-
-        if (user_check_linger_file(u) > 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;
-        bool all_closing = true;
-
-        assert(u);
-
-
-        LIST_FOREACH(sessions_by_user, i, u->sessions) {
-                if (session_is_active(i))
-                        return USER_ACTIVE;
-                if (session_get_state(i) != SESSION_CLOSING)
-                        all_closing = false;
-        }
-
-        if (u->sessions)
-                return all_closing ? USER_CLOSING : USER_ONLINE;
-
-        if (user_check_linger_file(u) > 0)
-                return USER_LINGERING;
-
-        return USER_CLOSING;
-}
-
-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",
-        [USER_CLOSING] = "closing"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(user_state, UserState);