+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2012 Lennart Poettering
- Copyright 2013 Zbigniew Jędrzejewski-Szmek
-
- 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 <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"
-#include "strv.h"
-
-static 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
- ;
-
-static 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";
-
-static const char have_dropins[] =
- "systemd/system\0"
- "systemd/user\0";
-
-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_EXTENDED = 1 << 5,
-
- SHOW_DEFAULTS =
- (SHOW_MASKED | SHOW_EQUIVALENT | SHOW_REDIRECTED | SHOW_OVERRIDDEN | SHOW_EXTENDED)
-} arg_flags = 0;
-
-static void pager_open_if_enabled(void) {
-
- if (arg_no_pager)
- return;
-
- pager_open(false);
-}
-
-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("%s%s%s %s %s %s\n",
- ansi_highlight_red(), "[MASKED]", ansi_highlight_off(),
- top, draw_special_char(DRAW_ARROW), bottom);
- return 1;
-}
-
-static int notify_override_equivalent(const char *top, const char *bottom) {
- if (!(arg_flags & SHOW_EQUIVALENT))
- return 0;
-
- printf("%s%s%s %s %s %s\n",
- ansi_highlight_green(), "[EQUIVALENT]", ansi_highlight_off(),
- top, draw_special_char(DRAW_ARROW), bottom);
- return 1;
-}
-
-static int notify_override_redirected(const char *top, const char *bottom) {
- if (!(arg_flags & SHOW_REDIRECTED))
- return 0;
-
- printf("%s%s%s %s %s %s\n",
- ansi_highlight(), "[REDIRECTED]", ansi_highlight_off(),
- top, draw_special_char(DRAW_ARROW), bottom);
- return 1;
-}
-
-static int notify_override_overridden(const char *top, const char *bottom) {
- if (!(arg_flags & SHOW_OVERRIDDEN))
- return 0;
-
- printf("%s%s%s %s %s %s\n",
- ansi_highlight(), "[OVERRIDDEN]", ansi_highlight_off(),
- top, draw_special_char(DRAW_ARROW), bottom);
- return 1;
-}
-
-static int notify_override_extended(const char *top, const char *bottom) {
- if (!(arg_flags & SHOW_EXTENDED))
- return 0;
-
- printf("%s%s%s %s %s %s\n",
- ansi_highlight(), "[EXTENDED]", ansi_highlight_off(),
- top, draw_special_char(DRAW_ARROW), 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)
- return notify_override_masked(top, bottom);
-
- k = readlink_malloc(top, &dest);
- if (k >= 0) {
- if (equivalent(dest, bottom) > 0)
- return notify_override_equivalent(top, bottom);
- else
- return notify_override_redirected(top, bottom);
- }
-
- k = notify_override_overridden(top, bottom);
- if (!arg_diff)
- return k;
-
- putchar('\n');
-
- fflush(stdout);
-
- pid = fork();
- if (pid < 0)
- return log_error_errno(errno, "Failed to fork off diff: %m");
- else if (pid == 0) {
- execlp("diff", "diff", "-us", "--", bottom, top, NULL);
- log_error_errno(errno, "Failed to execute diff: %m");
- _exit(1);
- }
-
- wait_for_terminate_and_warn("diff", pid, false);
- putchar('\n');
-
- return k;
-}
-
-static int enumerate_dir_d(Hashmap *top, Hashmap *bottom, Hashmap *drops, const char *toppath, const char *drop) {
- _cleanup_free_ char *unit = NULL;
- _cleanup_free_ char *path = NULL;
- _cleanup_strv_free_ char **list = NULL;
- char **file;
- char *c;
- int r;
-
- assert(!endswith(drop, "/"));
-
- path = strjoin(toppath, "/", drop, NULL);
- if (!path)
- return -ENOMEM;
-
- log_debug("Looking at %s", path);
-
- unit = strdup(drop);
- if (!unit)
- return -ENOMEM;
-
- c = strrchr(unit, '.');
- if (!c)
- return -EINVAL;
- *c = 0;
-
- r = get_files_in_directory(path, &list);
- if (r < 0)
- return log_error_errno(r, "Failed to enumerate %s: %m", path);
-
- STRV_FOREACH(file, list) {
- Hashmap *h;
- int k;
- char *p;
- char *d;
-
- if (!endswith(*file, ".conf"))
- continue;
-
- p = strjoin(path, "/", *file, NULL);
- if (!p)
- return -ENOMEM;
- d = p + strlen(toppath) + 1;
-
- log_debug("Adding at top: %s %s %s", d, draw_special_char(DRAW_ARROW), p);
- k = hashmap_put(top, d, p);
- if (k >= 0) {
- p = strdup(p);
- if (!p)
- return -ENOMEM;
- d = p + strlen(toppath) + 1;
- } else if (k != -EEXIST) {
- free(p);
- return k;
- }
-
- log_debug("Adding at bottom: %s %s %s", d, draw_special_char(DRAW_ARROW), p);
- free(hashmap_remove(bottom, d));
- k = hashmap_put(bottom, d, p);
- if (k < 0) {
- free(p);
- return k;
- }
-
- h = hashmap_get(drops, unit);
- if (!h) {
- h = hashmap_new(&string_hash_ops);
- if (!h)
- return -ENOMEM;
- hashmap_put(drops, unit, h);
- unit = strdup(unit);
- if (!unit)
- return -ENOMEM;
- }
-
- p = strdup(p);
- if (!p)
- return -ENOMEM;
-
- log_debug("Adding to drops: %s %s %s %s %s",
- unit, draw_special_char(DRAW_ARROW), basename(p), draw_special_char(DRAW_ARROW), p);
- k = hashmap_put(h, basename(p), p);
- if (k < 0) {
- free(p);
- if (k != -EEXIST)
- return k;
- }
- }
- return 0;
-}
-
-static int enumerate_dir(Hashmap *top, Hashmap *bottom, Hashmap *drops, const char *path, bool dropins) {
- _cleanup_closedir_ DIR *d;
-
- assert(top);
- assert(bottom);
- assert(drops);
- assert(path);
-
- log_debug("Looking at %s", path);
-
- d = opendir(path);
- if (!d) {
- if (errno == ENOENT)
- return 0;
-
- log_error_errno(errno, "Failed to open %s: %m", path);
- return -errno;
- }
-
- for (;;) {
- struct dirent *de;
- int k;
- char *p;
-
- errno = 0;
- de = readdir(d);
- if (!de)
- return -errno;
-
- dirent_ensure_type(d, de);
-
- if (dropins && de->d_type == DT_DIR && endswith(de->d_name, ".d"))
- enumerate_dir_d(top, bottom, drops, path, de->d_name);
-
- if (!dirent_is_file(de))
- continue;
-
- p = strjoin(path, "/", de->d_name, NULL);
- if (!p)
- return -ENOMEM;
-
- log_debug("Adding at top: %s %s %s", basename(p), draw_special_char(DRAW_ARROW), p);
- k = hashmap_put(top, basename(p), p);
- if (k >= 0) {
- p = strdup(p);
- if (!p)
- return -ENOMEM;
- } else if (k != -EEXIST) {
- free(p);
- return k;
- }
-
- log_debug("Adding at bottom: %s %s %s", basename(p), draw_special_char(DRAW_ARROW), p);
- free(hashmap_remove(bottom, basename(p)));
- k = hashmap_put(bottom, basename(p), p);
- if (k < 0) {
- free(p);
- return k;
- }
- }
-}
-
-static int process_suffix(const char *suffix, const char *onlyprefix) {
- const char *p;
- char *f;
- Hashmap *top, *bottom, *drops;
- Hashmap *h;
- char *key;
- int r = 0, k;
- Iterator i, j;
- int n_found = 0;
- bool dropins;
-
- assert(suffix);
- assert(!startswith(suffix, "/"));
- assert(!strstr(suffix, "//"));
-
- dropins = nulstr_contains(have_dropins, suffix);
-
- top = hashmap_new(&string_hash_ops);
- bottom = hashmap_new(&string_hash_ops);
- drops = hashmap_new(&string_hash_ops);
- if (!top || !bottom || !drops) {
- 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, drops, t, dropins);
- if (r == 0)
- r = k;
- }
-
- HASHMAP_FOREACH_KEY(f, key, top, i) {
- char *o;
-
- o = hashmap_get(bottom, key);
- assert(o);
-
- if (!onlyprefix || startswith(o, onlyprefix)) {
- if (path_equal(o, f)) {
- notify_override_unchanged(f);
- } else {
- k = found_override(f, o);
- if (k < 0)
- r = k;
- else
- n_found += k;
- }
- }
-
- h = hashmap_get(drops, key);
- if (h)
- HASHMAP_FOREACH(o, h, j)
- if (!onlyprefix || startswith(o, onlyprefix))
- n_found += notify_override_extended(f, o);
- }
-
-finish:
- if (top)
- hashmap_free_free(top);
- if (bottom)
- hashmap_free_free(bottom);
- if (drops) {
- HASHMAP_FOREACH_KEY(h, key, drops, i){
- hashmap_free_free(hashmap_remove(drops, key));
- hashmap_remove(drops, key);
- free(key);
- }
- hashmap_free(drops);
- }
- return r < 0 ? r : n_found;
-}
-
-static int process_suffixes(const char *onlyprefix) {
- const char *n;
- int n_found = 0, r;
-
- NULSTR_FOREACH(n, suffixes) {
- r = process_suffix(n, onlyprefix);
- if (r < 0)
- return r;
- else
- n_found += r;
- }
- return n_found;
-}
-
-static int process_suffix_chop(const char *arg) {
- const char *p;
-
- assert(arg);
-
- if (!path_is_absolute(arg))
- return process_suffix(arg, NULL);
-
- /* Strip prefix from the suffix */
- NULSTR_FOREACH(p, prefixes) {
- const char *suffix = startswith(arg, p);
- if (suffix) {
- suffix += strspn(suffix, "/");
- if (*suffix)
- return process_suffix(suffix, NULL);
- else
- return process_suffixes(arg);
- }
- }
-
- log_error("Invalid suffix specification %s.", arg);
- 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) {
- const char *word, *state;
- size_t l;
-
- FOREACH_WORD_SEPARATOR(word, l, flag_str, ",", state) {
- if (strneq("masked", word, l))
- flags |= SHOW_MASKED;
- else if (strneq ("equivalent", word, l))
- flags |= SHOW_EQUIVALENT;
- else if (strneq("redirected", word, l))
- flags |= SHOW_REDIRECTED;
- else if (strneq("overridden", word, l))
- flags |= SHOW_OVERRIDDEN;
- else if (strneq("unchanged", word, l))
- flags |= SHOW_UNCHANGED;
- else if (strneq("extended", word, l))
- flags |= SHOW_EXTENDED;
- else if (strneq("default", word, l))
- 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' },
- {}
- };
-
- 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(SYSTEMD_FEATURES);
- return 0;
-
- case ARG_NO_PAGER:
- arg_no_pager = true;
- break;
-
- 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;
-
- case '?':
- return -EINVAL;
-
- default:
- assert_not_reached("Unhandled option");
- }
-
- return 1;
-}
-
-int main(int argc, char *argv[]) {
- 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;
-
- pager_open_if_enabled();
-
- if (optind < argc) {
- int i;
-
- for (i = optind; i < argc; i++) {
- path_kill_slashes(argv[i]);
- k = process_suffix_chop(argv[i]);
- if (k < 0)
- r = k;
- else
- n_found += k;
- }
-
- } else {
- k = process_suffixes(NULL);
- if (k < 0)
- r = k;
- else
- n_found += k;
- }
-
- if (r >= 0)
- printf("%s%i overridden configuration files found.\n",
- n_found ? "\n" : "", n_found);
-
-finish:
- pager_close();
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / commitdiff