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authorLennart Poettering <lennart@poettering.net>2012-01-03 20:47:54 (GMT)
committerLennart Poettering <lennart@poettering.net>2012-01-03 20:47:54 (GMT)
commitaddedec48ba0ffc4472ef6d3b5a45c9d4239f1cd (patch)
tree867929927cbe2ca2866511d81b5fa4e998531839
parentdc4b02006455a4dddeb6ccc1f6656c89d3ebd27c (diff)
logind: if we can't open /dev/tty0, assume there is no VT subsystem and don't pretend we could do VT switching
-rw-r--r--src/login/logind-dbus.c2
-rw-r--r--src/login/logind-seat-dbus.c2
-rw-r--r--src/login/logind-seat.c28
-rw-r--r--src/login/logind-seat.h1
-rw-r--r--src/login/logind-session.c4
-rw-r--r--src/login/logind.c7
-rw-r--r--src/login/sd-login.c2
7 files changed, 33 insertions, 13 deletions
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 0550d1b..efbc040 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -301,7 +301,7 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
return -EINVAL;
if (s) {
- if (seat_is_vtconsole(s)) {
+ if (seat_can_multi_session(s)) {
if (vtnr <= 0 || vtnr > 63)
return -EINVAL;
} else {
diff --git a/src/login/logind-seat-dbus.c b/src/login/logind-seat-dbus.c
index 3a916ee..a15689b 100644
--- a/src/login/logind-seat-dbus.c
+++ b/src/login/logind-seat-dbus.c
@@ -141,7 +141,7 @@ static int bus_seat_append_multi_session(DBusMessageIter *i, const char *propert
assert(property);
assert(s);
- b = seat_is_vtconsole(s);
+ b = seat_can_multi_session(s);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
return -ENOMEM;
diff --git a/src/login/logind-seat.c b/src/login/logind-seat.c
index 3cf3958..8c83a2c 100644
--- a/src/login/logind-seat.c
+++ b/src/login/logind-seat.c
@@ -101,8 +101,10 @@ int seat_save(Seat *s) {
fprintf(f,
"# This is private data. Do not parse.\n"
- "IS_VTCONSOLE=%i\n",
- seat_is_vtconsole(s));
+ "IS_VTCONSOLE=%i\n"
+ "CAN_MULTI_SESSION=%i\n",
+ seat_is_vtconsole(s),
+ seat_can_multi_session(s));
if (s->active) {
assert(s->active->user);
@@ -191,7 +193,7 @@ int seat_preallocate_vts(Seat *s) {
if (s->manager->n_autovts <= 0)
return 0;
- if (!seat_is_vtconsole(s))
+ if (!seat_can_multi_session(s))
return 0;
for (i = 1; i <= s->manager->n_autovts; i++) {
@@ -266,7 +268,7 @@ int seat_active_vt_changed(Seat *s, int vtnr) {
assert(s);
assert(vtnr >= 1);
- if (!seat_is_vtconsole(s))
+ if (!seat_can_multi_session(s))
return -EINVAL;
log_debug("VT changed to %i", vtnr);
@@ -290,7 +292,7 @@ int seat_read_active_vt(Seat *s) {
assert(s);
- if (!seat_is_vtconsole(s))
+ if (!seat_can_multi_session(s))
return 0;
lseek(s->manager->console_active_fd, SEEK_SET, 0);
@@ -388,7 +390,7 @@ int seat_attach_session(Seat *s, Session *session) {
assert(session);
assert(!session->seat);
- if (!seat_is_vtconsole(s) && s->sessions)
+ if (!seat_can_multi_session(s) && s->sessions)
return -EEXIST;
session->seat = s;
@@ -396,7 +398,7 @@ int seat_attach_session(Seat *s, Session *session) {
seat_send_changed(s, "Sessions\0");
- if (!seat_is_vtconsole(s)) {
+ if (!seat_can_multi_session(s)) {
assert(!s->active);
seat_set_active(s, session);
}
@@ -410,6 +412,18 @@ bool seat_is_vtconsole(Seat *s) {
return s->manager->vtconsole == s;
}
+bool seat_can_multi_session(Seat *s) {
+ assert(s);
+
+ if (!seat_is_vtconsole(s))
+ return false;
+
+ /* If we can't watch which VT is in the foreground, we don't
+ * support VT switching */
+
+ return s->manager->console_active_fd >= 0;
+}
+
int seat_get_idle_hint(Seat *s, dual_timestamp *t) {
Session *session;
bool idle_hint = true;
diff --git a/src/login/logind-seat.h b/src/login/logind-seat.h
index 5bce143..3b2c7f0 100644
--- a/src/login/logind-seat.h
+++ b/src/login/logind-seat.h
@@ -62,6 +62,7 @@ int seat_preallocate_vts(Seat *s);
int seat_attach_session(Seat *s, Session *session);
bool seat_is_vtconsole(Seat *s);
+bool seat_can_multi_session(Seat *s);
int seat_get_idle_hint(Seat *s, dual_timestamp *t);
int seat_start(Seat *s);
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index 63ee758..58c70c3 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -185,7 +185,7 @@ int session_save(Session *s) {
"SERVICE=%s\n",
s->service);
- if (s->seat && seat_is_vtconsole(s->seat))
+ if (s->seat && seat_can_multi_session(s->seat))
fprintf(f,
"VTNR=%i\n",
s->vtnr);
@@ -270,7 +270,7 @@ int session_load(Session *s) {
seat_attach_session(o, s);
}
- if (vtnr && s->seat && seat_is_vtconsole(s->seat)) {
+ if (vtnr && s->seat && seat_can_multi_session(s->seat)) {
int v;
k = safe_atoi(vtnr, &v);
diff --git a/src/login/logind.c b/src/login/logind.c
index 4633a5e..3a1903c 100644
--- a/src/login/logind.c
+++ b/src/login/logind.c
@@ -655,7 +655,6 @@ int manager_dispatch_seat_udev(Manager *m) {
return r;
}
-
int manager_dispatch_vcsa_udev(Manager *m) {
struct udev_device *d;
int r = 0;
@@ -906,6 +905,12 @@ static int manager_connect_console(Manager *m) {
m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (m->console_active_fd < 0) {
+
+ /* On certain architectures (S390 and Xen), /dev/tty0
+ does not exist, so don't fail if we can't open it.*/
+ if (errno == ENOENT)
+ return 0;
+
log_error("Failed to open /sys/class/tty/tty0/active: %m");
return -errno;
}
diff --git a/src/login/sd-login.c b/src/login/sd-login.c
index 1d43681..e857ae0 100644
--- a/src/login/sd-login.c
+++ b/src/login/sd-login.c
@@ -574,7 +574,7 @@ _public_ int sd_seat_can_multi_session(const char *seat) {
return -ENOMEM;
r = parse_env_file(p, NEWLINE,
- "IS_VTCONSOLE", &s,
+ "CAN_MULTI_SESSION", &s,
NULL);
free(p);