/*-*- 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 .
***/
#include
#include
#include
#include
#include
#include
#include "logind-seat.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;
}