Isolation of udev code from remaining systemd

This commit is a first attempt to isolate the udev code from the
remaining code base.  It intentionally does not modify any files
but purely delete files which, on a first examination, appear to
not be needed.  This is a sweeping commit which may easily have
missed needed code.  Files can be retrieved by doing a checkout
from the previous commit:

 git checkout 2944f347d0 -- <filename>

1 files changed, 0 insertions, 263 deletions

diff --git a/src/shared/dbus-loop.c b/src/shared/dbus-loop.c
deleted file mode 100644
index da0a00443a..0000000000
--- a/src/shared/dbus-loop.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*-*- 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 Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 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
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <stdbool.h>
-#include <assert.h>
-#include <sys/epoll.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/timerfd.h>
-#include <unistd.h>
-
-#include "dbus-loop.h"
-#include "dbus-common.h"
-#include "util.h"
-
-/* Minimal implementation of the dbus loop which integrates all dbus
- * events into a single epoll fd which we can triviall integrate with
- * other loops. Note that this is not used in the main systemd daemon
- * since we run a more elaborate mainloop there. */
-
-typedef struct EpollData {
-        int fd;
-        void *object;
-        bool is_timeout:1;
-        bool fd_is_dupped:1;
-} EpollData;
-
-static dbus_bool_t add_watch(DBusWatch *watch, void *data) {
-        EpollData *e;
-        struct epoll_event ev;
-
-        assert(watch);
-
-        e = new0(EpollData, 1);
-        if (!e)
-                return FALSE;
-
-        e->fd = dbus_watch_get_unix_fd(watch);
-        e->object = watch;
-        e->is_timeout = false;
-
-        zero(ev);
-        ev.events = bus_flags_to_events(watch);
-        ev.data.ptr = e;
-
-        if (epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_ADD, e->fd, &ev) < 0) {
-
-                if (errno != EEXIST) {
-                        free(e);
-                        return FALSE;
-                }
-
-                /* Hmm, bloody D-Bus creates multiple watches on the
-                 * same fd. epoll() does not like that. As a dirty
-                 * hack we simply dup() the fd and hence get a second
-                 * one we can safely add to the epoll(). */
-
-                e->fd = dup(e->fd);
-                if (e->fd < 0) {
-                        free(e);
-                        return FALSE;
-                }
-
-                if (epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_ADD, e->fd, &ev) < 0) {
-                        close_nointr_nofail(e->fd);
-                        free(e);
-                        return FALSE;
-                }
-
-                e->fd_is_dupped = true;
-        }
-
-        dbus_watch_set_data(watch, e, NULL);
-
-        return TRUE;
-}
-
-static void remove_watch(DBusWatch *watch, void *data) {
-        EpollData *e;
-
-        assert(watch);
-
-        e = dbus_watch_get_data(watch);
-        if (!e)
-                return;
-
-        assert_se(epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_DEL, e->fd, NULL) >= 0);
-
-        if (e->fd_is_dupped)
-                close_nointr_nofail(e->fd);
-
-        free(e);
-}
-
-static void toggle_watch(DBusWatch *watch, void *data) {
-        EpollData *e;
-        struct epoll_event ev;
-
-        assert(watch);
-
-        e = dbus_watch_get_data(watch);
-        if (!e)
-                return;
-
-        zero(ev);
-        ev.events = bus_flags_to_events(watch);
-        ev.data.ptr = e;
-
-        assert_se(epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_MOD, e->fd, &ev) == 0);
-}
-
-static int timeout_arm(EpollData *e) {
-        struct itimerspec its;
-
-        assert(e);
-        assert(e->is_timeout);
-
-        zero(its);
-
-        if (dbus_timeout_get_enabled(e->object)) {
-                timespec_store(&its.it_value, dbus_timeout_get_interval(e->object) * USEC_PER_MSEC);
-                its.it_interval = its.it_value;
-        }
-
-        if (timerfd_settime(e->fd, 0, &its, NULL) < 0)
-                return -errno;
-
-        return 0;
-}
-
-static dbus_bool_t add_timeout(DBusTimeout *timeout, void *data) {
-        EpollData *e;
-        struct epoll_event ev;
-
-        assert(timeout);
-
-        e = new0(EpollData, 1);
-        if (!e)
-                return FALSE;
-
-        e->fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC);
-        if (e->fd < 0)
-                goto fail;
-
-        e->object = timeout;
-        e->is_timeout = true;
-
-        if (timeout_arm(e) < 0)
-                goto fail;
-
-        zero(ev);
-        ev.events = EPOLLIN;
-        ev.data.ptr = e;
-
-        if (epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_ADD, e->fd, &ev) < 0)
-                goto fail;
-
-        dbus_timeout_set_data(timeout, e, NULL);
-
-        return TRUE;
-
-fail:
-        if (e->fd >= 0)
-                close_nointr_nofail(e->fd);
-
-        free(e);
-        return FALSE;
-}
-
-static void remove_timeout(DBusTimeout *timeout, void *data) {
-        EpollData *e;
-
-        assert(timeout);
-
-        e = dbus_timeout_get_data(timeout);
-        if (!e)
-                return;
-
-        assert_se(epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_DEL, e->fd, NULL) >= 0);
-        close_nointr_nofail(e->fd);
-        free(e);
-}
-
-static void toggle_timeout(DBusTimeout *timeout, void *data) {
-        EpollData *e;
-        int r;
-
-        assert(timeout);
-
-        e = dbus_timeout_get_data(timeout);
-        if (!e)
-                return;
-
-        r = timeout_arm(e);
-        if (r < 0)
-                log_error("Failed to rearm timer: %s", strerror(-r));
-}
-
-int bus_loop_open(DBusConnection *c) {
-        int fd;
-
-        assert(c);
-
-        fd = epoll_create1(EPOLL_CLOEXEC);
-        if (fd < 0)
-                return -errno;
-
-        if (!dbus_connection_set_watch_functions(c, add_watch, remove_watch, toggle_watch, INT_TO_PTR(fd), NULL) ||
-            !dbus_connection_set_timeout_functions(c, add_timeout, remove_timeout, toggle_timeout, INT_TO_PTR(fd), NULL)) {
-                close_nointr_nofail(fd);
-                return -ENOMEM;
-        }
-
-        return fd;
-}
-
-int bus_loop_dispatch(int fd) {
-        int n;
-        struct epoll_event event;
-        EpollData *d;
-
-        assert(fd >= 0);
-
-        zero(event);
-
-        n = epoll_wait(fd, &event, 1, 0);
-        if (n < 0)
-                return errno == EAGAIN || errno == EINTR ? 0 : -errno;
-
-        assert_se(d = event.data.ptr);
-
-        if (d->is_timeout) {
-                DBusTimeout *t = d->object;
-
-                if (dbus_timeout_get_enabled(t))
-                        dbus_timeout_handle(t);
-        } else {
-                DBusWatch *w = d->object;
-
-                if (dbus_watch_get_enabled(w))
-                        dbus_watch_handle(w, bus_events_to_flags(event.events));
-        }
-
-        return 0;
-}