/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2014 - 2016 Red Hat, Inc.
*/
#include "nm-default.h"
#include "nm-sd.h"
#include "sd-event.h"
/*****************************************************************************
* Integrating sd_event into glib. Taken and adjusted from
* https://www.freedesktop.org/software/systemd/man/sd_event_get_fd.html
*****************************************************************************/
typedef struct SDEventSource {
GSource source;
GPollFD pollfd;
sd_event *event;
} SDEventSource;
static gboolean
event_prepare(GSource *source, int *timeout_)
{
return sd_event_prepare(((SDEventSource *) source)->event) > 0;
}
static gboolean
event_check(GSource *source)
{
return sd_event_wait(((SDEventSource *) source)->event, 0) > 0;
}
static gboolean
event_dispatch(GSource *source, GSourceFunc callback, gpointer user_data)
{
return sd_event_dispatch(((SDEventSource *) source)->event) > 0;
}
static void
event_finalize(GSource *source)
{
SDEventSource *s = (SDEventSource *) source;
sd_event_unref(s->event);
}
static SDEventSource *
event_create_source(sd_event *event)
{
static const GSourceFuncs event_funcs = {
.prepare = event_prepare,
.check = event_check,
.dispatch = event_dispatch,
.finalize = event_finalize,
};
SDEventSource *source;
gboolean is_default_event = FALSE;
int r;
if (!event) {
is_default_event = TRUE;
r = sd_event_default(&event);
if (r < 0)
g_return_val_if_reached(NULL);
}
source = (SDEventSource *) g_source_new((GSourceFuncs *) &event_funcs, sizeof(SDEventSource));
source->event = is_default_event ? g_steal_pointer(&event) : sd_event_ref(event);
source->pollfd = (GPollFD){
.fd = sd_event_get_fd(source->event),
.events = G_IO_IN | G_IO_HUP | G_IO_ERR,
};
g_source_add_poll(&source->source, &source->pollfd);
return source;
}
static guint
event_attach(sd_event *event, GMainContext *context)
{
SDEventSource *source;
guint id;
source = event_create_source(event);
g_return_val_if_fail(source, 0);
id = g_source_attach((GSource *) source, context);
g_source_unref((GSource *) source);
nm_assert(id != 0);
return id;
}
guint
nm_sd_event_attach_default(void)
{
return event_attach(NULL, NULL);
}
/*****************************************************************************/
/* ensure that defines in nm-sd.h correspond to the internal defines. */
#include "nm-sd-adapt-core.h"
#include "dhcp-lease-internal.h"
/*****************************************************************************/