+++ /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 <errno.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <limits.h>
-#include <getopt.h>
-#include <libkmod.h>
-
-#include "log.h"
-#include "util.h"
-#include "strv.h"
-#include "conf-files.h"
-#include "build.h"
-
-static char **arg_proc_cmdline_modules = NULL;
-
-static const char conf_file_dirs[] = CONF_DIRS_NULSTR("modules-load");
-
-static void systemd_kmod_log(void *data, int priority, const char *file, int line,
- const char *fn, const char *format, va_list args) {
-
- DISABLE_WARNING_FORMAT_NONLITERAL;
- log_internalv(priority, 0, file, line, fn, format, args);
- REENABLE_WARNING;
-}
-
-static int add_modules(const char *p) {
- _cleanup_strv_free_ char **k = NULL;
-
- k = strv_split(p, ",");
- if (!k)
- return log_oom();
-
- if (strv_extend_strv(&arg_proc_cmdline_modules, k) < 0)
- return log_oom();
-
- return 0;
-}
-
-static int parse_proc_cmdline_item(const char *key, const char *value) {
- int r;
-
- if (STR_IN_SET(key, "modules-load", "rd.modules-load") && value) {
- r = add_modules(value);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int load_module(struct kmod_ctx *ctx, const char *m) {
- const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
- struct kmod_list *itr, *modlist = NULL;
- int r = 0;
-
- log_debug("load: %s", m);
-
- r = kmod_module_new_from_lookup(ctx, m, &modlist);
- if (r < 0)
- return log_error_errno(r, "Failed to lookup alias '%s': %m", m);
-
- if (!modlist) {
- log_error("Failed to find module '%s'", m);
- return -ENOENT;
- }
-
- kmod_list_foreach(itr, modlist) {
- struct kmod_module *mod;
- int state, err;
-
- mod = kmod_module_get_module(itr);
- state = kmod_module_get_initstate(mod);
-
- switch (state) {
- case KMOD_MODULE_BUILTIN:
- log_info("Module '%s' is builtin", kmod_module_get_name(mod));
- break;
-
- case KMOD_MODULE_LIVE:
- log_debug("Module '%s' is already loaded", kmod_module_get_name(mod));
- break;
-
- default:
- err = kmod_module_probe_insert_module(mod, probe_flags,
- NULL, NULL, NULL, NULL);
-
- if (err == 0)
- log_info("Inserted module '%s'", kmod_module_get_name(mod));
- else if (err == KMOD_PROBE_APPLY_BLACKLIST)
- log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
- else {
- log_error_errno(err, "Failed to insert '%s': %m", kmod_module_get_name(mod));
- r = err;
- }
- }
-
- kmod_module_unref(mod);
- }
-
- kmod_module_unref_list(modlist);
-
- return r;
-}
-
-static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) {
- _cleanup_fclose_ FILE *f = NULL;
- int r;
-
- assert(ctx);
- assert(path);
-
- r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
- if (r < 0) {
- if (ignore_enoent && r == -ENOENT)
- return 0;
-
- return log_error_errno(r, "Failed to open %s, ignoring: %m", path);
- }
-
- log_debug("apply: %s", path);
- for (;;) {
- char line[LINE_MAX], *l;
- int k;
-
- if (!fgets(line, sizeof(line), f)) {
- if (feof(f))
- break;
-
- log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path);
- return -errno;
- }
-
- l = strstrip(line);
- if (!*l)
- continue;
- if (strchr(COMMENTS "\n", *l))
- continue;
-
- k = load_module(ctx, l);
- if (k < 0 && r == 0)
- r = k;
- }
-
- return r;
-}
-
-static void help(void) {
- printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
- "Loads statically configured kernel modules.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n",
- program_invocation_short_name);
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_VERSION = 0x100,
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, ARG_VERSION },
- {}
- };
-
- 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_VERSION:
- puts(PACKAGE_STRING);
- puts(SYSTEMD_FEATURES);
- return 0;
-
- case '?':
- return -EINVAL;
-
- default:
- assert_not_reached("Unhandled option");
- }
-
- return 1;
-}
-
-int main(int argc, char *argv[]) {
- int r, k;
- struct kmod_ctx *ctx;
-
- 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);
-
- r = parse_proc_cmdline(parse_proc_cmdline_item);
- if (r < 0)
- log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
-
- ctx = kmod_new(NULL, NULL);
- if (!ctx) {
- log_error("Failed to allocate memory for kmod.");
- goto finish;
- }
-
- kmod_load_resources(ctx);
- kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
-
- r = 0;
-
- if (argc > optind) {
- int i;
-
- for (i = optind; i < argc; i++) {
- k = apply_file(ctx, argv[i], false);
- if (k < 0 && r == 0)
- r = k;
- }
-
- } else {
- _cleanup_free_ char **files = NULL;
- char **fn, **i;
-
- STRV_FOREACH(i, arg_proc_cmdline_modules) {
- k = load_module(ctx, *i);
- if (k < 0 && r == 0)
- r = k;
- }
-
- k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
- if (k < 0) {
- log_error_errno(k, "Failed to enumerate modules-load.d files: %m");
- if (r == 0)
- r = k;
- goto finish;
- }
-
- STRV_FOREACH(fn, files) {
- k = apply_file(ctx, *fn, true);
- if (k < 0 && r == 0)
- r = k;
- }
- }
-
-finish:
- kmod_unref(ctx);
- strv_free(arg_proc_cmdline_modules);
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / commitdiff