+++ /dev/null
-/*-*- 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 <stdlib.h>
-#include <stdbool.h>
-#include <errno.h>
-#include <string.h>
-#include <stdio.h>
-#include <limits.h>
-#include <getopt.h>
-
-#include "log.h"
-#include "strv.h"
-#include "util.h"
-#include "strv.h"
-
-#define PROC_SYS_PREFIX "/proc/sys/"
-
-static char **arg_prefixes = NULL;
-
-static int apply_sysctl(const char *property, const char *value) {
- char *p, *n;
- int r = 0, k;
-
- log_debug("Setting '%s' to '%s'", property, value);
-
- p = new(char, sizeof(PROC_SYS_PREFIX) + strlen(property));
- if (!p) {
- log_error("Out of memory");
- return -ENOMEM;
- }
-
- n = stpcpy(p, PROC_SYS_PREFIX);
- strcpy(n, property);
-
- for (; *n; n++)
- if (*n == '.')
- *n = '/';
-
- if (!strv_isempty(arg_prefixes)) {
- char **i;
- bool good = false;
-
- STRV_FOREACH(i, arg_prefixes)
- if (path_startswith(p, *i)) {
- good = true;
- break;
- }
-
- if (!good) {
- log_debug("Skipping %s", p);
- free(p);
- return 0;
- }
- }
-
- k = write_one_line_file(p, value);
- if (k < 0) {
-
- log_full(k == -ENOENT ? LOG_DEBUG : LOG_WARNING,
- "Failed to write '%s' to '%s': %s", value, p, strerror(-k));
-
- if (k != -ENOENT && r == 0)
- r = k;
- }
-
- free(p);
-
- return r;
-}
-
-static int apply_file(const char *path, bool ignore_enoent) {
- FILE *f;
- int r = 0;
-
- assert(path);
-
- if (!(f = fopen(path, "re"))) {
- if (ignore_enoent && errno == ENOENT)
- return 0;
-
- log_error("Failed to open file '%s', ignoring: %m", path);
- return -errno;
- }
-
- log_debug("apply: %s\n", path);
- while (!feof(f)) {
- char l[LINE_MAX], *p, *value;
- int k;
-
- if (!fgets(l, sizeof(l), f)) {
- if (feof(f))
- break;
-
- log_error("Failed to read file '%s', ignoring: %m", path);
- r = -errno;
- goto finish;
- }
-
- p = strstrip(l);
-
- if (!*p)
- continue;
-
- if (strchr(COMMENTS, *p))
- continue;
-
- if (!(value = strchr(p, '='))) {
- log_error("Line is not an assignment in file '%s': %s", path, value);
-
- if (r == 0)
- r = -EINVAL;
- continue;
- }
-
- *value = 0;
- value++;
-
- if ((k = apply_sysctl(strstrip(p), strstrip(value))) < 0 && r == 0)
- r = k;
- }
-
-finish:
- fclose(f);
-
- return r;
-}
-
-static int help(void) {
-
- printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
- "Applies kernel sysctl settings.\n\n"
- " -h --help Show this help\n"
- " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n",
- program_invocation_short_name);
-
- return 0;
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_PREFIX
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "prefix", required_argument, NULL, ARG_PREFIX },
- { NULL, 0, NULL, 0 }
- };
-
- int c;
-
- assert(argc >= 0);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
-
- switch (c) {
-
- case 'h':
- help();
- return 0;
-
- case ARG_PREFIX: {
- char *p;
- char **l;
-
- for (p = optarg; *p; p++)
- if (*p == '.')
- *p = '/';
-
- l = strv_append(arg_prefixes, optarg);
- if (!l) {
- log_error("Out of memory");
- return -ENOMEM;
- }
-
- strv_free(arg_prefixes);
- arg_prefixes = l;
-
- 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;
-
- r = parse_argv(argc, argv);
- if (r <= 0)
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
-
- umask(0022);
-
- if (argc > optind) {
- int i;
-
- for (i = optind; i < argc; i++) {
- int k;
-
- k = apply_file(argv[i], false);
- if (k < 0 && r == 0)
- r = k;
- }
- } else {
- char **files, **f;
- int k;
-
- r = conf_files_list(&files, ".conf",
- "/etc/sysctl.d",
- "/run/sysctl.d",
- "/usr/local/lib/sysctl.d",
- "/usr/lib/sysctl.d",
-#ifdef HAVE_SPLIT_USR
- "/lib/sysctl.d",
-#endif
- NULL);
- if (r < 0) {
- log_error("Failed to enumerate sysctl.d files: %s", strerror(-r));
- goto finish;
- }
-
- STRV_FOREACH(f, files) {
- k = apply_file(*f, true);
- if (k < 0 && r == 0)
- r = k;
- }
-
- k = apply_file("/etc/sysctl.conf", true);
- if (k < 0 && r == 0)
- r = k;
-
- strv_free(files);
- }
-finish:
- strv_free(arg_prefixes);
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff