#include <sys/stat.h>
#include <limits.h>
#include <dirent.h>
+#include <getopt.h>
#include <libkmod.h>
#include "log.h"
#include "util.h"
#include "strv.h"
#include "conf-files.h"
+#include "virt.h"
+#include "fileio.h"
+
+static char **arg_proc_cmdline_modules = NULL;
+
+static const char conf_file_dirs[] =
+ "/etc/modules-load.d\0"
+ "/run/modules-load.d\0"
+ "/usr/local/lib/modules-load.d\0"
+ "/usr/lib/modules-load.d\0"
+#ifdef HAVE_SPLIT_USR
+ "/lib/modules-load.d\0"
+#endif
+ ;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
static void systemd_kmod_log(void *data, int priority, const char *file, int line,
const char *fn, const char *format, va_list args)
{
- log_meta(priority, file, line, fn, format, args);
+ log_metav(priority, file, line, fn, format, args);
}
#pragma GCC diagnostic pop
-int main(int argc, char *argv[]) {
- int r = EXIT_FAILURE;
- char **files, **fn;
- struct kmod_ctx *ctx;
- const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST|KMOD_PROBE_IGNORE_LOADED;
+static int add_modules(const char *p) {
+ char **t;
+ _cleanup_strv_free_ char **k = NULL;
- if (argc > 1) {
- log_error("This program takes no argument.");
- return EXIT_FAILURE;
+ k = strv_split(p, ",");
+ if (!k)
+ return log_oom();
+
+ t = strv_merge(arg_proc_cmdline_modules, k);
+ if (!t)
+ return log_oom();
+
+ strv_free(arg_proc_cmdline_modules);
+ arg_proc_cmdline_modules = t;
+
+ return 0;
+}
+
+static int parse_proc_cmdline(void) {
+ char _cleanup_free_ *line = NULL;
+ char *w, *state;
+ int r;
+ size_t l;
+
+ if (detect_container(NULL) > 0)
+ return 0;
+
+ r = read_one_line_file("/proc/cmdline", &line);
+ if (r < 0) {
+ log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
+ return 0;
}
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
+ FOREACH_WORD_QUOTED(w, l, line, state) {
+ char _cleanup_free_ *word;
- umask(0022);
+ word = strndup(w, l);
+ if (!word)
+ return log_oom();
- ctx = kmod_new(NULL, NULL);
- if (!ctx) {
- log_error("Failed to allocate memory for kmod.");
- goto finish;
+ if (startswith(word, "modules-load=")) {
+
+ r = add_modules(word + 13);
+ if (r < 0)
+ return r;
+
+ } else if (startswith(word, "rd.modules-load=")) {
+
+ if (in_initrd()) {
+ r = add_modules(word + 16);
+ if (r < 0)
+ return r;
+ }
+
+ }
}
- kmod_load_resources(ctx);
+ return 0;
+}
- kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
+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;
- if (conf_files_list(&files, ".conf",
- "/etc/modules-load.d",
- "/run/modules-load.d",
- "/usr/local/lib/modules-load.d",
- "/usr/lib/modules-load.d",
-#ifdef HAVE_SPLIT_USR
- "/lib/modules-load.d",
-#endif
- NULL) < 0) {
- log_error("Failed to enumerate modules-load.d files: %s", strerror(-r));
- goto finish;
+ log_debug("load: %s\n", m);
+
+ r = kmod_module_new_from_lookup(ctx, m, &modlist);
+ if (r < 0) {
+ log_error("Failed to lookup alias '%s': %s", m, strerror(-r));
+ return r;
+ }
+
+ 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("Failed to insert '%s': %s", kmod_module_get_name(mod),
+ strerror(-err));
+ 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", conf_file_dirs, &f);
+ if (r < 0) {
+ if (ignore_enoent && r == -ENOENT)
+ return 0;
+
+ log_error("Failed to open %s, ignoring: %s", path, strerror(-r));
+ return r;
}
- r = EXIT_SUCCESS;
+ log_debug("apply: %s\n", path);
+ for (;;) {
+ char line[LINE_MAX], *l;
+ int k;
- STRV_FOREACH(fn, files) {
- FILE *f;
+ if (!fgets(line, sizeof(line), f)) {
+ if (feof(f))
+ break;
- f = fopen(*fn, "re");
- if (!f) {
- if (errno == ENOENT)
- continue;
+ log_error("Failed to read file '%s', ignoring: %m", path);
+ return -errno;
+ }
- log_error("Failed to open %s: %m", *fn);
- r = EXIT_FAILURE;
+ l = strstrip(line);
+ if (!*l)
+ continue;
+ if (strchr(COMMENTS, *l))
continue;
+
+ k = load_module(ctx, l);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ return r;
+}
+
+static int help(void) {
+
+ printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
+ "Loads statically configured kernel modules.\n\n"
+ " -h --help Show this help\n",
+ program_invocation_short_name);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { 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 '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
}
+ }
- log_debug("apply: %s\n", *fn);
- for (;;) {
- char line[LINE_MAX], *l;
- struct kmod_list *itr, *modlist = NULL;
- int err;
+ return 1;
+}
- if (!fgets(line, sizeof(line), f))
- break;
+int main(int argc, char *argv[]) {
+ int r, k;
+ struct kmod_ctx *ctx;
- l = strstrip(line);
- if (*l == '#' || *l == 0)
- continue;
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
- err = kmod_module_new_from_lookup(ctx, l, &modlist);
- if (err < 0) {
- log_error("Failed to lookup alias '%s'", l);
- r = EXIT_FAILURE;
- continue;
- }
+ log_set_target(LOG_TARGET_AUTO);
+ log_parse_environment();
+ log_open();
- kmod_list_foreach(itr, modlist) {
- struct kmod_module *mod;
+ umask(0022);
- mod = kmod_module_get_module(itr);
- err = kmod_module_probe_insert_module(mod, probe_flags,
- NULL, NULL, NULL, NULL);
+ if (parse_proc_cmdline() < 0)
+ return EXIT_FAILURE;
- 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("Failed to insert '%s': %s", kmod_module_get_name(mod),
- strerror(-err));
- r = EXIT_FAILURE;
- }
+ ctx = kmod_new(NULL, NULL);
+ if (!ctx) {
+ log_error("Failed to allocate memory for kmod.");
+ goto finish;
+ }
- kmod_module_unref(mod);
- }
+ kmod_load_resources(ctx);
+ kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
+
+ r = 0;
+
+ if (argc > optind) {
+ int i;
- kmod_module_unref_list(modlist);
+ for (i = optind; i < argc; i++) {
+ k = apply_file(ctx, argv[i], false);
+ if (k < 0 && r == 0)
+ r = k;
}
- if (ferror(f)) {
- log_error("Failed to read from file: %m");
- r = EXIT_FAILURE;
+ } 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 = EXIT_FAILURE;
+ }
+
+ r = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
+ if (r < 0) {
+ log_error("Failed to enumerate modules-load.d files: %s", strerror(-r));
+ goto finish;
}
- fclose(f);
+ STRV_FOREACH(fn, files) {
+ k = apply_file(ctx, *fn, true);
+ if (k < 0 && r == 0)
+ r = k;
+ }
}
finish:
- strv_free(files);
kmod_unref(ctx);
+ strv_free(arg_proc_cmdline_modules);
- return r;
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
~ianmdlvl / elogind.git / blobdiff