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>

2 files changed, 0 insertions, 183 deletions

diff --git a/src/cgls/Makefile b/src/cgls/Makefile
deleted file mode 120000
index d0b0e8e008..0000000000
--- a/src/cgls/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-../Makefile
\ No newline at end of file
diff --git a/src/cgls/cgls.c b/src/cgls/cgls.c
deleted file mode 100644
index b2cd968e46..0000000000
--- a/src/cgls/cgls.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 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 <limits.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <errno.h>
-#include <getopt.h>
-#include <string.h>
-
-#include "cgroup-show.h"
-#include "cgroup-util.h"
-#include "log.h"
-#include "path-util.h"
-#include "util.h"
-#include "pager.h"
-#include "build.h"
-
-static bool arg_no_pager = false;
-static bool arg_kernel_threads = false;
-static bool arg_all = false;
-
-static void help(void) {
-
-        printf("%s [OPTIONS...] [CGROUP...]\n\n"
-               "Recursively show control group contents.\n\n"
-               "  -h --help           Show this help\n"
-               "     --version        Show package version\n"
-               "     --no-pager       Do not pipe output into a pager\n"
-               "  -a --all            Show all groups, including empty\n"
-               "  -k                  Include kernel threads in output\n",
-               program_invocation_short_name);
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
-        enum {
-                ARG_NO_PAGER = 0x100,
-                ARG_VERSION
-        };
-
-        static const struct option options[] = {
-                { "help",      no_argument,       NULL, 'h'          },
-                { "version",   no_argument,       NULL, ARG_VERSION  },
-                { "no-pager",  no_argument,       NULL, ARG_NO_PAGER },
-                { "all",       no_argument,       NULL, 'a'          },
-                { NULL,        0,                 NULL, 0            }
-        };
-
-        int c;
-
-        assert(argc >= 1);
-        assert(argv);
-
-        while ((c = getopt_long(argc, argv, "hka", options, NULL)) >= 0) {
-
-                switch (c) {
-
-                case 'h':
-                        help();
-                        return 0;
-
-                case ARG_VERSION:
-                        puts(PACKAGE_STRING);
-                        puts(DISTRIBUTION);
-                        puts(SYSTEMD_FEATURES);
-                        return 0;
-
-                case ARG_NO_PAGER:
-                        arg_no_pager = true;
-                        break;
-
-                case 'a':
-                        arg_all = true;
-                        break;
-
-                case 'k':
-                        arg_kernel_threads = true;
-                        break;
-
-                case '?':
-                        return -EINVAL;
-
-                default:
-                        log_error("Unknown option code %c", c);
-                        return -EINVAL;
-                }
-        }
-
-        return 1;
-}
-
-int main(int argc, char *argv[]) {
-        int r = 0, retval = EXIT_FAILURE;
-
-        log_parse_environment();
-        log_open();
-
-        r = parse_argv(argc, argv);
-        if (r < 0)
-                goto finish;
-        else if (r == 0) {
-                retval = EXIT_SUCCESS;
-                goto finish;
-        }
-
-        if (!arg_no_pager)
-                pager_open();
-
-        if (optind < argc) {
-                unsigned i;
-
-                for (i = (unsigned) optind; i < (unsigned) argc; i++) {
-                        int q;
-                        printf("%s:\n", argv[i]);
-
-                        q = show_cgroup_by_path(argv[i], NULL, 0, arg_kernel_threads, arg_all);
-                        if (q < 0)
-                                r = q;
-                }
-
-        } else {
-                char *p;
-
-                p = get_current_dir_name();
-                if (!p) {
-                        log_error("Cannot determine current working directory: %m");
-                        goto finish;
-                }
-
-                if (path_startswith(p, "/sys/fs/cgroup")) {
-                        printf("Working Directory %s:\n", p);
-                        r = show_cgroup_by_path(p, NULL, 0, arg_kernel_threads, arg_all);
-                } else {
-                        char *root = NULL;
-                        const char *t = NULL;
-
-                        r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &root);
-                        if (r < 0)
-                                t = "/";
-                        else {
-                                if (endswith(root, "/system"))
-                                        root[strlen(root)-7] = 0;
-
-                                t = root[0] ? root : "/";
-                        }
-
-                        r = show_cgroup(SYSTEMD_CGROUP_CONTROLLER, t, NULL, 0, arg_kernel_threads, arg_all);
-                        free(root);
-                }
-
-                free(p);
-        }
-
-        if (r < 0)
-                log_error("Failed to list cgroup tree: %s", strerror(-r));
-
-        retval = EXIT_SUCCESS;
-
-finish:
-        pager_close();
-
-        return retval;
-}