Move part of logind.c into a separate file

liblogind-core.la was underlinked, missing a few functions
defined in logind.c. They are moved to a new file, logind-core.c,
and this file is linked into liblogind-core.la.
In addition, logind-acl.c is attached to the liblogind-core.la,
instead of systemd-logind directly.

1 files changed, 514 insertions, 0 deletions

diff --git a/src/login/logind-core.c b/src/login/logind-core.c
new file mode 100644
index 0000000000..36999ace40
--- /dev/null
+++ b/src/login/logind-core.c
@@ -0,0 +1,514 @@
+/*-*- 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 <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <unistd.h>
+#include <linux/vt.h>
+
+#include "logind.h"
+#include "dbus-common.h"
+#include "strv.h"
+
+int manager_add_device(Manager *m, const char *sysfs, bool master, Device **_device) {
+        Device *d;
+
+        assert(m);
+        assert(sysfs);
+
+        d = hashmap_get(m->devices, sysfs);
+        if (d) {
+                if (_device)
+                        *_device = d;
+
+                /* we support adding master-flags, but not removing them */
+                d->master = d->master || master;
+
+                return 0;
+        }
+
+        d = device_new(m, sysfs, master);
+        if (!d)
+                return -ENOMEM;
+
+        if (_device)
+                *_device = d;
+
+        return 0;
+}
+
+int manager_add_seat(Manager *m, const char *id, Seat **_seat) {
+        Seat *s;
+
+        assert(m);
+        assert(id);
+
+        s = hashmap_get(m->seats, id);
+        if (s) {
+                if (_seat)
+                        *_seat = s;
+
+                return 0;
+        }
+
+        s = seat_new(m, id);
+        if (!s)
+                return -ENOMEM;
+
+        if (_seat)
+                *_seat = s;
+
+        return 0;
+}
+
+int manager_add_session(Manager *m, const char *id, Session **_session) {
+        Session *s;
+
+        assert(m);
+        assert(id);
+
+        s = hashmap_get(m->sessions, id);
+        if (s) {
+                if (_session)
+                        *_session = s;
+
+                return 0;
+        }
+
+        s = session_new(m, id);
+        if (!s)
+                return -ENOMEM;
+
+        if (_session)
+                *_session = s;
+
+        return 0;
+}
+
+int manager_add_user(Manager *m, uid_t uid, gid_t gid, const char *name, User **_user) {
+        User *u;
+
+        assert(m);
+        assert(name);
+
+        u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
+        if (u) {
+                if (_user)
+                        *_user = u;
+
+                return 0;
+        }
+
+        u = user_new(m, uid, gid, name);
+        if (!u)
+                return -ENOMEM;
+
+        if (_user)
+                *_user = u;
+
+        return 0;
+}
+
+int manager_add_user_by_name(Manager *m, const char *name, User **_user) {
+        uid_t uid;
+        gid_t gid;
+        int r;
+
+        assert(m);
+        assert(name);
+
+        r = get_user_creds(&name, &uid, &gid, NULL, NULL);
+        if (r < 0)
+                return r;
+
+        return manager_add_user(m, uid, gid, name, _user);
+}
+
+int manager_add_user_by_uid(Manager *m, uid_t uid, User **_user) {
+        struct passwd *p;
+
+        assert(m);
+
+        errno = 0;
+        p = getpwuid(uid);
+        if (!p)
+                return errno ? -errno : -ENOENT;
+
+        return manager_add_user(m, uid, p->pw_gid, p->pw_name, _user);
+}
+
+int manager_add_inhibitor(Manager *m, const char* id, Inhibitor **_inhibitor) {
+        Inhibitor *i;
+
+        assert(m);
+        assert(id);
+
+        i = hashmap_get(m->inhibitors, id);
+        if (i) {
+                if (_inhibitor)
+                        *_inhibitor = i;
+
+                return 0;
+        }
+
+        i = inhibitor_new(m, id);
+        if (!i)
+                return -ENOMEM;
+
+        if (_inhibitor)
+                *_inhibitor = i;
+
+        return 0;
+}
+
+int manager_add_button(Manager *m, const char *name, Button **_button) {
+        Button *b;
+
+        assert(m);
+        assert(name);
+
+        b = hashmap_get(m->buttons, name);
+        if (b) {
+                if (_button)
+                        *_button = b;
+
+                return 0;
+        }
+
+        b = button_new(m, name);
+        if (!b)
+                return -ENOMEM;
+
+        if (_button)
+                *_button = b;
+
+        return 0;
+}
+
+int manager_watch_busname(Manager *m, const char *name) {
+        char *n;
+        int r;
+
+        assert(m);
+        assert(name);
+
+        if (hashmap_get(m->busnames, name))
+                return 0;
+
+        n = strdup(name);
+        if (!n)
+                return -ENOMEM;
+
+        r = hashmap_put(m->busnames, n, n);
+        if (r < 0) {
+                free(n);
+                return r;
+        }
+
+        return 0;
+}
+
+void manager_drop_busname(Manager *m, const char *name) {
+        Session *session;
+        Iterator i;
+        char *key;
+
+        assert(m);
+        assert(name);
+
+        if (!hashmap_get(m->busnames, name))
+                return;
+
+        /* keep it if the name still owns a controller */
+        HASHMAP_FOREACH(session, m->sessions, i)
+                if (session_is_controller(session, name))
+                        return;
+
+        key = hashmap_remove(m->busnames, name);
+        if (key)
+                free(key);
+}
+
+int manager_process_seat_device(Manager *m, struct udev_device *d) {
+        Device *device;
+        int r;
+
+        assert(m);
+
+        if (streq_ptr(udev_device_get_action(d), "remove")) {
+
+                device = hashmap_get(m->devices, udev_device_get_syspath(d));
+                if (!device)
+                        return 0;
+
+                seat_add_to_gc_queue(device->seat);
+                device_free(device);
+
+        } else {
+                const char *sn;
+                Seat *seat = NULL;
+                bool master;
+
+                sn = udev_device_get_property_value(d, "ID_SEAT");
+                if (isempty(sn))
+                        sn = "seat0";
+
+                if (!seat_name_is_valid(sn)) {
+                        log_warning("Device with invalid seat name %s found, ignoring.", sn);
+                        return 0;
+                }
+
+                /* ignore non-master devices for unknown seats */
+                master = udev_device_has_tag(d, "master-of-seat");
+                if (!master && !(seat = hashmap_get(m->seats, sn)))
+                        return 0;
+
+                r = manager_add_device(m, udev_device_get_syspath(d), master, &device);
+                if (r < 0)
+                        return r;
+
+                if (!seat) {
+                        r = manager_add_seat(m, sn, &seat);
+                        if (r < 0) {
+                                if (!device->seat)
+                                        device_free(device);
+
+                                return r;
+                        }
+                }
+
+                device_attach(device, seat);
+                seat_start(seat);
+        }
+
+        return 0;
+}
+
+int manager_process_button_device(Manager *m, struct udev_device *d) {
+        Button *b;
+
+        int r;
+
+        assert(m);
+
+        if (streq_ptr(udev_device_get_action(d), "remove")) {
+
+                b = hashmap_get(m->buttons, udev_device_get_sysname(d));
+                if (!b)
+                        return 0;
+
+                button_free(b);
+
+        } else {
+                const char *sn;
+
+                r = manager_add_button(m, udev_device_get_sysname(d), &b);
+                if (r < 0)
+                        return r;
+
+                sn = udev_device_get_property_value(d, "ID_SEAT");
+                if (isempty(sn))
+                        sn = "seat0";
+
+                button_set_seat(b, sn);
+                button_open(b);
+        }
+
+        return 0;
+}
+
+int manager_get_session_by_pid(Manager *m, pid_t pid, Session **session) {
+        _cleanup_free_ char *unit = NULL;
+        Session *s;
+        int r;
+
+        assert(m);
+        assert(session);
+
+        if (pid < 1)
+                return -EINVAL;
+
+        r = cg_pid_get_unit(pid, &unit);
+        if (r < 0)
+                return r;
+
+        s = hashmap_get(m->session_units, unit);
+        if (!s)
+                return 0;
+
+        *session = s;
+        return 1;
+}
+
+int manager_get_user_by_pid(Manager *m, pid_t pid, User **user) {
+        _cleanup_free_ char *unit = NULL;
+        User *u;
+        int r;
+
+        assert(m);
+        assert(user);
+
+        if (pid < 1)
+                return -EINVAL;
+
+        r = cg_pid_get_slice(pid, &unit);
+        if (r < 0)
+                return r;
+
+        u = hashmap_get(m->user_units, unit);
+        if (!u)
+                return 0;
+
+        *user = u;
+        return 1;
+}
+
+int manager_get_idle_hint(Manager *m, dual_timestamp *t) {
+        Session *s;
+        bool idle_hint;
+        dual_timestamp ts = { 0, 0 };
+        Iterator i;
+
+        assert(m);
+
+        idle_hint = !manager_is_inhibited(m, INHIBIT_IDLE, INHIBIT_BLOCK, t, false, false, 0);
+
+        HASHMAP_FOREACH(s, m->sessions, i) {
+                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;
+}
+
+bool manager_shall_kill(Manager *m, const char *user) {
+        assert(m);
+        assert(user);
+
+        if (!m->kill_user_processes)
+                return false;
+
+        if (strv_contains(m->kill_exclude_users, user))
+                return false;
+
+        if (strv_isempty(m->kill_only_users))
+                return true;
+
+        return strv_contains(m->kill_only_users, user);
+}
+
+static int vt_is_busy(int vtnr) {
+        struct vt_stat vt_stat;
+        int r = 0, fd;
+
+        assert(vtnr >= 1);
+
+        /* We explicitly open /dev/tty1 here instead of /dev/tty0. If
+         * we'd open the latter we'd open the foreground tty which
+         * hence would be unconditionally busy. By opening /dev/tty1
+         * we avoid this. Since tty1 is special and needs to be an
+         * explicitly loaded getty or DM this is safe. */
+
+        fd = open_terminal("/dev/tty1", O_RDWR|O_NOCTTY|O_CLOEXEC);
+        if (fd < 0)
+                return -errno;
+
+        if (ioctl(fd, VT_GETSTATE, &vt_stat) < 0)
+                r = -errno;
+        else
+                r = !!(vt_stat.v_state & (1 << vtnr));
+
+        close_nointr_nofail(fd);
+
+        return r;
+}
+
+int manager_spawn_autovt(Manager *m, int vtnr) {
+        int r;
+        char *name = NULL;
+        const char *mode = "fail";
+
+        assert(m);
+        assert(vtnr >= 1);
+
+        if ((unsigned) vtnr > m->n_autovts &&
+            (unsigned) vtnr != m->reserve_vt)
+                return 0;
+
+        if ((unsigned) vtnr != m->reserve_vt) {
+                /* If this is the reserved TTY, we'll start the getty
+                 * on it in any case, but otherwise only if it is not
+                 * busy. */
+
+                r = vt_is_busy(vtnr);
+                if (r < 0)
+                        return r;
+                else if (r > 0)
+                        return -EBUSY;
+        }
+
+        if (asprintf(&name, "autovt@tty%i.service", vtnr) < 0) {
+                log_error("Could not allocate service name.");
+                r = -ENOMEM;
+                goto finish;
+        }
+
+        r = bus_method_call_with_reply (
+                        m->bus,
+                        "org.freedesktop.systemd1",
+                        "/org/freedesktop/systemd1",
+                        "org.freedesktop.systemd1.Manager",
+                        "StartUnit",
+                        NULL,
+                        NULL,
+                        DBUS_TYPE_STRING, &name,
+                        DBUS_TYPE_STRING, &mode,
+                        DBUS_TYPE_INVALID);
+
+finish:
+        free(name);
+
+        return r;
+}