logind: first version that compiles fine

1 files changed, 245 insertions, 0 deletions

diff --git a/src/logind-seat.c b/src/logind-seat.c
new file mode 100644
index 0000000000..dcf1c7107b
--- /dev/null
+++ b/src/logind-seat.c
@@ -0,0 +1,245 @@
+/*-*- 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 General Public License as published by
+  the Free Software Foundation; either version 2 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
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <assert.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/vt.h>
+
+#include "logind.h"
+#include "util.h"
+
+Seat *seat_new(Manager *m, const char *id) {
+        Seat *s;
+
+        assert(m);
+        assert(id);
+
+        s = new0(Seat, 1);
+        if (!s)
+                return NULL;
+
+        s->state_file = strappend("/run/systemd/seat/", id);
+        if (!s->state_file) {
+                free(s);
+                return NULL;
+        }
+
+        s->id = file_name_from_path(s->state_file);
+
+        if (hashmap_put(m->seats, s->id, s) < 0) {
+                free(s->id);
+                free(s);
+                return NULL;
+        }
+
+        s->manager = m;
+
+        return s;
+}
+
+void seat_free(Seat *s) {
+        assert(s);
+
+        while (s->sessions)
+                session_free(s->sessions);
+
+        assert(!s->active);
+
+        while (s->devices)
+                device_free(s->devices);
+
+        hashmap_remove(s->manager->seats, s->id);
+
+        free(s->state_file);
+        free(s);
+}
+
+int seat_save(Seat *s) {
+        FILE *f;
+        int r;
+
+        assert(s);
+
+        r = safe_mkdir("/run/systemd/seat", 0755, 0, 0);
+        if (r < 0)
+                return r;
+
+        f = fopen(s->state_file, "we");
+        if (!f)
+                return -errno;
+
+        fprintf(f,
+                "IS_VTCONSOLE=%i\n",
+                s->manager->vtconsole == s);
+
+        if (s->active) {
+                assert(s->active->user);
+
+                fprintf(f,
+                        "ACTIVE=%s\n"
+                        "ACTIVE_UID=%lu\n",
+                        s->active->id,
+                        (unsigned long) s->active->user->uid);
+        }
+
+        if (s->sessions) {
+                Session *i;
+                fputs("OTHER_UIDS=", f);
+
+                LIST_FOREACH(sessions_by_seat, i, s->sessions) {
+                        assert(i->user);
+
+                        if (i == s->active)
+                                continue;
+
+                        fprintf(f,
+                                "%s%lu",
+                                i == s->sessions ? "" : " ",
+                                (unsigned long) i->user->uid);
+                }
+        }
+
+        fflush(f);
+        if (ferror(f)) {
+                r = -errno;
+                unlink(s->state_file);
+        }
+
+        fclose(f);
+        return r;
+}
+
+int seat_load(Seat *s) {
+        assert(s);
+
+        return 0;
+}
+
+static int vt_allocate(int vtnr) {
+        int fd, r;
+        char *p;
+
+        assert(vtnr >= 1);
+
+        if (asprintf(&p, "/dev/tty%i", vtnr) < 0)
+                return -ENOMEM;
+
+        fd = open_terminal(p, O_RDWR|O_NOCTTY|O_CLOEXEC);
+        free(p);
+
+        r = fd < 0 ? -errno : 0;
+
+        if (fd >= 0)
+                close_nointr_nofail(fd);
+
+        return r;
+}
+
+int seat_preallocate_vts(Seat *s) {
+        int i, r = 0;
+
+        assert(s);
+        assert(s->manager);
+
+        if (s->manager->n_autovts <= 0)
+                return 0;
+
+        if (s->manager->vtconsole != s)
+                return 0;
+
+        for (i = 1; i < s->manager->n_autovts; i++) {
+                int q;
+
+                q = vt_allocate(i);
+                if (r >= 0 && q < 0)
+                        r = q;
+        }
+
+        return r;
+}
+
+int seat_apply_acls(Seat *s) {
+        assert(s);
+
+
+        return 0;
+}
+
+static int vt_is_busy(int vtnr) {
+        struct vt_stat vt_stat;
+        int r = 0, fd;
+
+        assert(vtnr >= 1);
+
+        fd = open_terminal("/dev/tty0", 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;
+}
+
+void seat_active_vt_changed(Seat *s, int vtnr) {
+        Session *i;
+
+        assert(s);
+        assert(vtnr >= 1);
+        assert(s->manager->vtconsole == s);
+
+        s->active = NULL;
+
+        LIST_FOREACH(sessions_by_seat, i, s->sessions)
+                if (i->vtnr == vtnr) {
+                        s->active = i;
+                        break;
+                }
+
+        seat_apply_acls(s);
+
+        if (vt_is_busy(vtnr) == 0)
+                manager_spawn_autovt(s->manager, vtnr);
+}
+
+int seat_stop(Seat *s) {
+        Session *session;
+        int r = 0;
+
+        assert(s);
+
+        LIST_FOREACH(sessions_by_seat, session, s->sessions) {
+                int k;
+
+                k = session_stop(session);
+                if (k < 0)
+                        r = k;
+        }
+
+        return r;
+}