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, 84 deletions

diff --git a/src/system-update-generator/system-update-generator.c b/src/system-update-generator/system-update-generator.c
deleted file mode 100644
index 6660192f5e..0000000000
--- a/src/system-update-generator/system-update-generator.c
+++ /dev/null
@@ -1,84 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2012 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 <errno.h>
-#include <unistd.h>
-
-#include "log.h"
-#include "util.h"
-#include "unit-name.h"
-#include "path-util.h"
-
-/*
- * Implements the logic described in
- * http://freedesktop.org/wiki/Software/systemd/SystemUpdates
- */
-
-static const char *arg_dest = "/tmp";
-
-static int generate_symlink(void) {
-        struct stat st;
-        char *p;
-
-        if (lstat("/system-update", &st) < 0) {
-                if (errno == ENOENT)
-                        return 0;
-
-                log_error("Failed to check for system update: %m");
-                return -EINVAL;
-        }
-
-        p = strappend(arg_dest, "/default.target");
-        if (!p)
-                return log_oom();
-
-        if (symlink(SYSTEM_DATA_UNIT_PATH "/system-update.target", p) < 0) {
-                free(p);
-                log_error("Failed to create symlink: %m");
-                return -errno;
-        }
-
-        free(p);
-
-        return 0;
-}
-
-int main(int argc, char *argv[]) {
-        int r;
-
-        if (argc > 1 && argc != 4) {
-                log_error("This program takes three or no arguments.");
-                return EXIT_FAILURE;
-        }
-
-        if (argc > 1)
-                arg_dest = argv[2];
-
-        log_set_target(LOG_TARGET_SAFE);
-        log_parse_environment();
-        log_open();
-
-        umask(0022);
-
-        r = generate_symlink();
-
-        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}