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, 490 deletions

diff --git a/src/delta/delta.c b/src/delta/delta.c
deleted file mode 100644
index a65cea51bc..0000000000
--- a/src/delta/delta.c
+++ /dev/null
@@ -1,490 +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 <assert.h>
-#include <string.h>
-#include <unistd.h>
-#include <getopt.h>
-
-#include "hashmap.h"
-#include "util.h"
-#include "path-util.h"
-#include "log.h"
-#include "pager.h"
-#include "build.h"
-
-static bool arg_no_pager = false;
-static int arg_diff = -1;
-
-static enum {
-        SHOW_MASKED = 1 << 0,
-        SHOW_EQUIVALENT = 1 << 1,
-        SHOW_REDIRECTED = 1 << 2,
-        SHOW_OVERRIDDEN = 1 << 3,
-        SHOW_UNCHANGED = 1 << 4,
-
-        SHOW_DEFAULTS =
-        (SHOW_MASKED | SHOW_EQUIVALENT | SHOW_REDIRECTED | SHOW_OVERRIDDEN)
-} arg_flags = 0;
-
-static int equivalent(const char *a, const char *b) {
-        _cleanup_free_ char *x = NULL, *y = NULL;
-
-        x = canonicalize_file_name(a);
-        if (!x)
-                return -errno;
-
-        y = canonicalize_file_name(b);
-        if (!y)
-                return -errno;
-
-        return path_equal(x, y);
-}
-
-static int notify_override_masked(const char *top, const char *bottom) {
-        if (!(arg_flags & SHOW_MASKED))
-                return 0;
-
-        printf(ANSI_HIGHLIGHT_RED_ON "[MASKED]" ANSI_HIGHLIGHT_OFF "     %s → %s\n", top, bottom);
-        return 1;
-}
-
-static int notify_override_equivalent(const char *top, const char *bottom) {
-        if (!(arg_flags & SHOW_EQUIVALENT))
-                return 0;
-
-        printf(ANSI_HIGHLIGHT_GREEN_ON "[EQUIVALENT]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom);
-        return 1;
-}
-
-static int notify_override_redirected(const char *top, const char *bottom) {
-        if (!(arg_flags & SHOW_REDIRECTED))
-                return 0;
-
-        printf(ANSI_HIGHLIGHT_ON "[REDIRECTED]" ANSI_HIGHLIGHT_OFF "   %s → %s\n", top, bottom);
-        return 1;
-}
-
-static int notify_override_overridden(const char *top, const char *bottom) {
-        if (!(arg_flags & SHOW_OVERRIDDEN))
-                return 0;
-
-        printf(ANSI_HIGHLIGHT_ON "[OVERRIDDEN]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom);
-        return 1;
-}
-
-static int notify_override_unchanged(const char *f) {
-        if (!(arg_flags & SHOW_UNCHANGED))
-                return 0;
-
-        printf("[UNCHANGED]  %s\n", f);
-        return 1;
-}
-
-static int found_override(const char *top, const char *bottom) {
-        _cleanup_free_ char *dest = NULL;
-        int k;
-        pid_t pid;
-
-        assert(top);
-        assert(bottom);
-
-        if (null_or_empty_path(top) > 0) {
-                notify_override_masked(top, bottom);
-                return 0;
-        }
-
-        k = readlink_malloc(top, &dest);
-        if (k >= 0) {
-                if (equivalent(dest, bottom) > 0)
-                        notify_override_equivalent(top, bottom);
-                else
-                        notify_override_redirected(top, bottom);
-
-                return 0;
-        }
-
-        notify_override_overridden(top, bottom);
-        if (!arg_diff)
-                return 0;
-
-        putchar('\n');
-
-        fflush(stdout);
-
-        pid = fork();
-        if (pid < 0) {
-                log_error("Failed to fork off diff: %m");
-                return -errno;
-        } else if (pid == 0) {
-                execlp("diff", "diff", "-us", "--", bottom, top, NULL);
-                log_error("Failed to execute diff: %m");
-                _exit(1);
-        }
-
-        wait_for_terminate(pid, NULL);
-
-        putchar('\n');
-
-        return 0;
-}
-
-static int enumerate_dir(Hashmap *top, Hashmap *bottom, const char *path) {
-        _cleanup_closedir_ DIR *d;
-
-        assert(top);
-        assert(bottom);
-        assert(path);
-
-        d = opendir(path);
-        if (!d) {
-                if (errno == ENOENT)
-                        return 0;
-
-                log_error("Failed to enumerate %s: %m", path);
-                return -errno;
-        }
-
-        for (;;) {
-                struct dirent *de;
-                union dirent_storage buf;
-                int k;
-                char *p;
-
-                k = readdir_r(d, &buf.de, &de);
-                if (k != 0)
-                        return -k;
-
-                if (!de)
-                        break;
-
-                if (!dirent_is_file(de))
-                        continue;
-
-                p = strjoin(path, "/", de->d_name, NULL);
-                if (!p)
-                        return -ENOMEM;
-
-                path_kill_slashes(p);
-
-                k = hashmap_put(top, path_get_file_name(p), p);
-                if (k >= 0) {
-                        p = strdup(p);
-                        if (!p)
-                                return -ENOMEM;
-                } else if (k != -EEXIST) {
-                        free(p);
-                        return k;
-                }
-
-                free(hashmap_remove(bottom, path_get_file_name(p)));
-                k = hashmap_put(bottom, path_get_file_name(p), p);
-                if (k < 0) {
-                        free(p);
-                        return k;
-                }
-        }
-
-        return 0;
-}
-
-static int process_suffix(const char *prefixes, const char *suffix) {
-        const char *p;
-        char *f;
-        Hashmap *top, *bottom=NULL;
-        int r = 0, k;
-        Iterator i;
-        int n_found = 0;
-
-        assert(prefixes);
-        assert(suffix);
-
-        top = hashmap_new(string_hash_func, string_compare_func);
-        if (!top) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        bottom = hashmap_new(string_hash_func, string_compare_func);
-        if (!bottom) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        NULSTR_FOREACH(p, prefixes) {
-                _cleanup_free_ char *t = NULL;
-
-                t = strjoin(p, "/", suffix, NULL);
-                if (!t) {
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                k = enumerate_dir(top, bottom, t);
-                if (k < 0)
-                        r = k;
-
-                log_debug("Looking at %s", t);
-        }
-
-        HASHMAP_FOREACH(f, top, i) {
-                char *o;
-
-                o = hashmap_get(bottom, path_get_file_name(f));
-                assert(o);
-
-                if (path_equal(o, f)) {
-                        notify_override_unchanged(f);
-                        continue;
-                }
-
-                k = found_override(f, o);
-                if (k < 0)
-                        r = k;
-
-                n_found ++;
-        }
-
-finish:
-        if (top)
-                hashmap_free_free(top);
-        if (bottom)
-                hashmap_free_free(bottom);
-
-        return r < 0 ? r : n_found;
-}
-
-static int process_suffix_chop(const char *prefixes, const char *suffix) {
-        const char *p;
-
-        assert(prefixes);
-        assert(suffix);
-
-        if (!path_is_absolute(suffix))
-                return process_suffix(prefixes, suffix);
-
-        /* Strip prefix from the suffix */
-        NULSTR_FOREACH(p, prefixes) {
-                if (startswith(suffix, p)) {
-                        suffix += strlen(p);
-                        suffix += strspn(suffix, "/");
-                        return process_suffix(prefixes, suffix);
-                }
-        }
-
-        log_error("Invalid suffix specification %s.", suffix);
-        return -EINVAL;
-}
-
-static void help(void) {
-
-        printf("%s [OPTIONS...] [SUFFIX...]\n\n"
-               "Find overridden configuration files.\n\n"
-               "  -h --help           Show this help\n"
-               "     --version        Show package version\n"
-               "     --no-pager       Do not pipe output into a pager\n"
-               "     --diff[=1|0]     Show a diff when overridden files differ\n"
-               "  -t --type=LIST...   Only display a selected set of override types\n",
-               program_invocation_short_name);
-}
-
-static int parse_flags(const char *flag_str, int flags) {
-        char *w, *state;
-        size_t l;
-
-        FOREACH_WORD(w, l, flag_str, state) {
-                if (strncmp("masked", w, l) == 0)
-                        flags |= SHOW_MASKED;
-                else if (strncmp ("equivalent", w, l) == 0)
-                        flags |= SHOW_EQUIVALENT;
-                else if (strncmp("redirected", w, l) == 0)
-                        flags |= SHOW_REDIRECTED;
-                else if (strncmp("overridden", w, l) == 0)
-                        flags |= SHOW_OVERRIDDEN;
-                else if (strncmp("unchanged", w, l) == 0)
-                        flags |= SHOW_UNCHANGED;
-                else if (strncmp("default", w, l) == 0)
-                        flags |= SHOW_DEFAULTS;
-                else
-                        return -EINVAL;
-        }
-        return flags;
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
-        enum {
-                ARG_NO_PAGER = 0x100,
-                ARG_DIFF,
-                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 },
-                { "diff",      optional_argument, NULL, ARG_DIFF     },
-                { "type",      required_argument, NULL, 't'          },
-                { NULL,        0,                 NULL, 0            }
-        };
-
-        int c;
-
-        assert(argc >= 1);
-        assert(argv);
-
-        while ((c = getopt_long(argc, argv, "ht:", 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 '?':
-                        return -EINVAL;
-
-                case 't': {
-                        int f;
-                        f = parse_flags(optarg, arg_flags);
-                        if (f < 0) {
-                                log_error("Failed to parse flags field.");
-                                return -EINVAL;
-                        }
-                        arg_flags = f;
-                        break;
-                }
-
-                case ARG_DIFF:
-                        if (!optarg)
-                                arg_diff = 1;
-                        else {
-                                int b;
-
-                                b = parse_boolean(optarg);
-                                if (b < 0) {
-                                        log_error("Failed to parse diff boolean.");
-                                        return -EINVAL;
-                                } else if (b)
-                                        arg_diff = 1;
-                                else
-                                        arg_diff = 0;
-                        }
-                        break;
-
-                default:
-                        log_error("Unknown option code %c", c);
-                        return -EINVAL;
-                }
-        }
-
-        return 1;
-}
-
-int main(int argc, char *argv[]) {
-
-        const char prefixes[] =
-                "/etc\0"
-                "/run\0"
-                "/usr/local/lib\0"
-                "/usr/local/share\0"
-                "/usr/lib\0"
-                "/usr/share\0"
-#ifdef HAVE_SPLIT_USR
-                "/lib\0"
-#endif
-                ;
-
-        const char suffixes[] =
-                "sysctl.d\0"
-                "tmpfiles.d\0"
-                "modules-load.d\0"
-                "binfmt.d\0"
-                "systemd/system\0"
-                "systemd/user\0"
-                "systemd/system-preset\0"
-                "systemd/user-preset\0"
-                "udev/rules.d\0"
-                "modprobe.d\0";
-
-        int r = 0, k;
-        int n_found = 0;
-
-        log_parse_environment();
-        log_open();
-
-        r = parse_argv(argc, argv);
-        if (r <= 0)
-                goto finish;
-
-        if (arg_flags == 0)
-                arg_flags = SHOW_DEFAULTS;
-
-        if (arg_diff < 0)
-                arg_diff = !!(arg_flags & SHOW_OVERRIDDEN);
-        else if (arg_diff)
-                arg_flags |= SHOW_OVERRIDDEN;
-
-        if (!arg_no_pager)
-                pager_open();
-
-        if (optind < argc) {
-                int i;
-
-                for (i = optind; i < argc; i++) {
-                        k = process_suffix_chop(prefixes, argv[i]);
-                        if (k < 0)
-                                r = k;
-                        else
-                                n_found += k;
-                }
-
-        } else {
-                const char *n;
-
-                NULSTR_FOREACH(n, suffixes) {
-                        k = process_suffix(prefixes, n);
-                        if (k < 0)
-                                r = k;
-                        else
-                                n_found += k;
-                }
-        }
-
-        if (r >= 0)
-                printf("\n%i overridden configuration files found.\n", n_found);
-
-finish:
-        pager_close();
-
-        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}