main: listen for new seats

Allocate new seat objects when a new seat occurs and remove them when a
seat goes away.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

diff --git a/src/main.c b/src/main.c
index 2aa0d8e..0a69b64 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -33,6 +33,7 @@
 #include "eloop.h"
 #include "input.h"
 #include "log.h"
+#include "misc.h"
 #include "ui.h"
 #include "uterm.h"
 #include "vt.h"
@@ -47,6 +48,15 @@ struct kmscon_app {
        struct kmscon_ui *ui;
 
        struct uterm_monitor *mon;
+       struct kmscon_dlist seats;
+};
+
+struct kmscon_seat {
+       struct kmscon_dlist list;
+       struct kmscon_app *app;
+
+       struct uterm_monitor_seat *useat;
+       char *sname;
 };
 
 static void sig_generic(struct ev_eloop *eloop, struct signalfd_siginfo *info,
@@ -82,6 +92,45 @@ static bool vt_switch(struct kmscon_vt *vt,
        return true;
 }
 
+static void seat_new(struct kmscon_app *app,
+                    struct uterm_monitor_seat *useat,
+                    const char *sname)
+{
+       struct kmscon_seat *seat;
+
+       seat = malloc(sizeof(*seat));
+       if (!seat)
+               return;
+       memset(seat, 0, sizeof(*seat));
+       seat->app = app;
+       seat->useat = useat;
+
+       seat->sname = strdup(sname);
+       if (!seat->sname) {
+               log_err("cannot allocate memory for seat name");
+               goto err_free;
+       }
+
+       uterm_monitor_set_seat_data(seat->useat, seat);
+       kmscon_dlist_link(&app->seats, &seat->list);
+
+       log_info("new seat %s", seat->sname);
+       return;
+
+err_free:
+       free(seat);
+}
+
+static void seat_free(struct kmscon_seat *seat)
+{
+       log_info("free seat %s", seat->sname);
+
+       kmscon_dlist_unlink(&seat->list);
+       uterm_monitor_set_seat_data(seat->useat, NULL);
+       free(seat->sname);
+       free(seat);
+}
+
 static void monitor_event(struct uterm_monitor *mon,
                          struct uterm_monitor_event *ev,
                          void *data)
@@ -90,8 +139,11 @@ static void monitor_event(struct uterm_monitor *mon,
 
        switch (ev->type) {
        case UTERM_MONITOR_NEW_SEAT:
+               seat_new(app, ev->seat, ev->seat_name);
                break;
        case UTERM_MONITOR_FREE_SEAT:
+               if (ev->seat_data)
+                       seat_free(ev->seat_data);
                break;
        case UTERM_MONITOR_NEW_DEV:
                break;
@@ -137,6 +189,8 @@ static int setup_app(struct kmscon_app *app)
        if (ret)
                goto err_app;
 
+       kmscon_dlist_init(&app->seats);
+
        ret = uterm_monitor_new(&app->mon, app->eloop, monitor_event, app);
        if (ret)
                goto err_app;