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-rw-r--r--man/kernel-command-line.xml16
-rw-r--r--src/modules-load/modules-load.c172
2 files changed, 148 insertions, 40 deletions
diff --git a/man/kernel-command-line.xml b/man/kernel-command-line.xml
index 10b348fcc6..6e1c7e080a 100644
--- a/man/kernel-command-line.xml
+++ b/man/kernel-command-line.xml
@@ -206,8 +206,8 @@
<term><varname>rd.udev.log-priority=</varname></term>
<term><varname>udev.children-max=</varname></term>
<term><varname>rd.udev.children-max=</varname></term>
- <term><varname>udev.udev.exec-delay=</varname></term>
- <term><varname>rd.udev.udev.exec-delay=</varname></term>
+ <term><varname>udev.exec-delay=</varname></term>
+ <term><varname>rd.udev.exec-delay=</varname></term>
<listitem>
<para>Parameters understood by
@@ -256,6 +256,18 @@
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>driver=</varname></term>
+ <term><varname>rd.driver=</varname></term>
+
+ <listitem>
+ <para>Load a specific kernel
+ boot early at boot. For
+ details see
+ <citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</refsect1>
diff --git a/src/modules-load/modules-load.c b/src/modules-load/modules-load.c
index c78f7d8aa8..22ea7333ed 100644
--- a/src/modules-load/modules-load.c
+++ b/src/modules-load/modules-load.c
@@ -32,6 +32,9 @@
#include "util.h"
#include "strv.h"
#include "conf-files.h"
+#include "virt.h"
+
+static char **arg_proc_cmdline_modules = NULL;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
@@ -42,11 +45,120 @@ static void systemd_kmod_log(void *data, int priority, const char *file, int lin
}
#pragma GCC diagnostic pop
+static int add_modules(const char *p) {
+ char **t, **k;
+
+ k = strv_split(p, ",");
+ if (!k) {
+ log_error("Out of memory");
+ return -ENOMEM;
+ }
+
+ t = strv_merge(arg_proc_cmdline_modules, k);
+ strv_free(k);
+ if (!t) {
+ log_error("Out of memory");
+ return -ENOMEM;
+ }
+
+ strv_free(arg_proc_cmdline_modules);
+ arg_proc_cmdline_modules = t;
+
+ return 0;
+}
+
+static int parse_proc_cmdline(void) {
+ char *line, *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;
+ }
+
+ FOREACH_WORD_QUOTED(w, l, line, state) {
+ char *word;
+
+ word = strndup(w, l);
+ if (!word) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (startswith(word, "driver=")) {
+
+ r = add_modules(word + 7);
+ if (r < 0)
+ goto finish;
+
+ } else if (startswith(word, "rd.driver=")) {
+
+ if (in_initrd()) {
+ r = add_modules(word + 10);
+ if (r < 0)
+ goto finish;
+ }
+
+ }
+
+ free(word);
+ }
+
+ r = 0;
+
+finish:
+ free(line);
+ return r;
+}
+
+static int load_module(struct kmod_ctx *ctx, const char *m) {
+ const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST|KMOD_PROBE_IGNORE_LOADED;
+ struct kmod_list *itr, *modlist = NULL;
+ int r = 0;
+
+ 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;
+ }
+
+ kmod_list_foreach(itr, modlist) {
+ struct kmod_module *mod;
+ int err;
+
+ mod = kmod_module_get_module(itr);
+ 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;
+}
+
int main(int argc, char *argv[]) {
- int r = EXIT_FAILURE;
- char **files, **fn;
+ int r = EXIT_FAILURE, k;
+ char **files, **fn, **i;
struct kmod_ctx *ctx;
- const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST|KMOD_PROBE_IGNORE_LOADED;
if (argc > 1) {
log_error("This program takes no argument.");
@@ -59,6 +171,9 @@ int main(int argc, char *argv[]) {
umask(0022);
+ if (parse_proc_cmdline() < 0)
+ return EXIT_FAILURE;
+
ctx = kmod_new(NULL, NULL);
if (!ctx) {
log_error("Failed to allocate memory for kmod.");
@@ -66,10 +181,17 @@ int main(int argc, char *argv[]) {
}
kmod_load_resources(ctx);
-
kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
- if (conf_files_list(&files, ".conf",
+ r = EXIT_SUCCESS;
+
+ STRV_FOREACH(i, arg_proc_cmdline_modules) {
+ k = load_module(ctx, *i);
+ if (k < 0)
+ r = EXIT_FAILURE;
+ }
+
+ k = conf_files_list(&files, ".conf",
"/etc/modules-load.d",
"/run/modules-load.d",
"/usr/local/lib/modules-load.d",
@@ -77,13 +199,13 @@ int main(int argc, char *argv[]) {
#ifdef HAVE_SPLIT_USR
"/lib/modules-load.d",
#endif
- NULL) < 0) {
- log_error("Failed to enumerate modules-load.d files: %s", strerror(-r));
+ NULL);
+ if (k < 0) {
+ log_error("Failed to enumerate modules-load.d files: %s", strerror(-k));
+ r = EXIT_FAILURE;
goto finish;
}
- r = EXIT_SUCCESS;
-
STRV_FOREACH(fn, files) {
FILE *f;
@@ -100,8 +222,6 @@ int main(int argc, char *argv[]) {
log_debug("apply: %s\n", *fn);
for (;;) {
char line[LINE_MAX], *l;
- struct kmod_list *itr, *modlist = NULL;
- int err;
if (!fgets(line, sizeof(line), f))
break;
@@ -110,34 +230,9 @@ int main(int argc, char *argv[]) {
if (*l == '#' || *l == 0)
continue;
- err = kmod_module_new_from_lookup(ctx, l, &modlist);
- if (err < 0) {
- log_error("Failed to lookup alias '%s'", l);
+ k = load_module(ctx, l);
+ if (k < 0)
r = EXIT_FAILURE;
- continue;
- }
-
- kmod_list_foreach(itr, modlist) {
- struct kmod_module *mod;
-
- mod = kmod_module_get_module(itr);
- 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 = EXIT_FAILURE;
- }
-
- kmod_module_unref(mod);
- }
-
- kmod_module_unref_list(modlist);
}
if (ferror(f)) {
@@ -151,6 +246,7 @@ int main(int argc, char *argv[]) {
finish:
strv_free(files);
kmod_unref(ctx);
+ strv_free(arg_proc_cmdline_modules);
return r;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-08 17:57:40 +0000