diff options
Diffstat (limited to 'src/sysctl.c')
| -rw-r--r-- | src/sysctl.c | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/src/sysctl.c b/src/sysctl.c deleted file mode 100644 index 8bdfb081..00000000 --- a/src/sysctl.c +++ /dev/null @@ -1,266 +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 General Public License as published by - the Free Software Foundation; either version 2 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 - General Public License for more details. - - You should have received a copy of the GNU 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; - - if (argc-optind > 1) { - log_error("This program expects one or no arguments."); - return EXIT_FAILURE; - } - - log_set_target(LOG_TARGET_AUTO); - log_parse_environment(); - log_open(); - - umask(0022); - - if (argc > optind) - r = apply_file(argv[optind], false); - else { - char **files, **f; - - r = conf_files_list(&files, ".conf", - "/run/sysctl.d", - "/etc/sysctl.d", - "/usr/local/lib/sysctl.d", - "/usr/lib/sysctl.d", - "/lib/sysctl.d", - NULL); - if (r < 0) { - log_error("Failed to enumerate sysctl.d files: %s", strerror(-r)); - goto finish; - } - - STRV_FOREACH(f, files) { - int k; - - k = apply_file(*f, true); - if (k < 0 && r == 0) - r = k; - } - - apply_file("/etc/sysctl.conf", true); - - strv_free(files); - } -finish: - strv_free(arg_prefixes); - - return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; -} |