mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
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128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/* Copyright (C) 2014 - 2016 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#include "nm-sd.h"
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#include "sd-event.h"
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/*****************************************************************************
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* Integrating sd_event into glib. Taken and adjusted from
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* https://www.freedesktop.org/software/systemd/man/sd_event_get_fd.html
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*****************************************************************************/
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typedef struct SDEventSource {
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GSource source;
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GPollFD pollfd;
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sd_event *event;
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guint *default_source_id;
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} SDEventSource;
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static gboolean
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event_prepare (GSource *source, int *timeout_)
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{
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return sd_event_prepare (((SDEventSource *) source)->event) > 0;
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}
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static gboolean
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event_check (GSource *source)
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{
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return sd_event_wait (((SDEventSource *) source)->event, 0) > 0;
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}
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static gboolean
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event_dispatch (GSource *source, GSourceFunc callback, gpointer user_data)
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{
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return sd_event_dispatch (((SDEventSource *)source)->event) > 0;
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}
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static void
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event_finalize (GSource *source)
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{
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SDEventSource *s;
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s = (SDEventSource *) source;
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sd_event_unref (s->event);
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if (s->default_source_id)
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*s->default_source_id = 0;
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}
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static SDEventSource *
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event_create_source (sd_event *event, guint *default_source_id)
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{
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static GSourceFuncs event_funcs = {
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.prepare = event_prepare,
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.check = event_check,
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.dispatch = event_dispatch,
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.finalize = event_finalize,
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};
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SDEventSource *source;
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g_return_val_if_fail (event, NULL);
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source = (SDEventSource *) g_source_new (&event_funcs, sizeof (SDEventSource));
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source->event = sd_event_ref (event);
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source->pollfd.fd = sd_event_get_fd (event);
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source->pollfd.events = G_IO_IN | G_IO_HUP | G_IO_ERR;
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source->default_source_id = default_source_id;
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g_source_add_poll ((GSource *) source, &source->pollfd);
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return source;
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}
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static guint
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event_attach (sd_event *event, GMainContext *context)
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{
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SDEventSource *source;
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guint id;
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int r;
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sd_event *e = event;
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guint *p_default_source_id = NULL;
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if (!e) {
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static guint default_source_id = 0;
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if (default_source_id) {
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/* The default event cannot be registered multiple times. */
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g_return_val_if_reached (0);
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}
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r = sd_event_default (&e);
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if (r < 0)
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g_return_val_if_reached (0);
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p_default_source_id = &default_source_id;
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}
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source = event_create_source (e, p_default_source_id);
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id = g_source_attach ((GSource *) source, context);
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g_source_unref ((GSource *) source);
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if (!event) {
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*p_default_source_id = id;
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sd_event_unref (e);
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}
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g_return_val_if_fail (id, 0);
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return id;
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}
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guint
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nm_sd_event_attach_default (void)
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{
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return event_attach (NULL, NULL);
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}
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/*****************************************************************************/
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/* ensure that defines in nm-sd.h correspond to the internal defines. */
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#include "nm-sd-adapt-core.h"
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#include "dhcp-lease-internal.h"
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/*****************************************************************************/
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