1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
33 #include "conf-files.h"
37 static const char conf_file_dirs[] = CONF_DIRS_NULSTR("binfmt");
39 static int delete_rule(const char *rule) {
40 _cleanup_free_ char *x = NULL, *fn = NULL;
49 e = strchrnul(x+1, x[0]);
52 fn = strappend("/proc/sys/fs/binfmt_misc/", x+1);
56 return write_string_file(fn, "-1");
59 static int apply_rule(const char *rule) {
64 r = write_string_file("/proc/sys/fs/binfmt_misc/register", rule);
66 return log_error_errno(r, "Failed to add binary format: %m");
71 static int apply_file(const char *path, bool ignore_enoent) {
72 _cleanup_fclose_ FILE *f = NULL;
77 r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
79 if (ignore_enoent && r == -ENOENT)
82 return log_error_errno(r, "Failed to open file '%s', ignoring: %m", path);
85 log_debug("apply: %s", path);
90 if (!fgets(l, sizeof(l), f)) {
94 log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path);
101 if (strchr(COMMENTS "\n", *p))
112 static void help(void) {
113 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
114 "Registers binary formats.\n\n"
115 " -h --help Show this help\n"
116 " --version Show package version\n"
117 , program_invocation_short_name);
120 static int parse_argv(int argc, char *argv[]) {
126 static const struct option options[] = {
127 { "help", no_argument, NULL, 'h' },
128 { "version", no_argument, NULL, ARG_VERSION },
137 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
146 puts(PACKAGE_STRING);
147 puts(SYSTEMD_FEATURES);
154 assert_not_reached("Unhandled option");
160 int main(int argc, char *argv[]) {
163 r = parse_argv(argc, argv);
165 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
167 log_set_target(LOG_TARGET_AUTO);
168 log_parse_environment();
178 for (i = optind; i < argc; i++) {
179 k = apply_file(argv[i], false);
184 _cleanup_strv_free_ char **files = NULL;
187 r = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
189 log_error_errno(r, "Failed to enumerate binfmt.d files: %m");
193 /* Flush out all rules */
194 write_string_file("/proc/sys/fs/binfmt_misc/status", "-1");
196 STRV_FOREACH(f, files) {
197 k = apply_file(*f, true);
204 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;