-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
#include <unistd.h>
#include <string.h>
#include <errno.h>
+#include <libkmod.h>
#include "macro.h"
#include "execute.h"
static const char * const kmod_table[] = {
"autofs4", "/sys/class/misc/autofs",
- "ipv6", "/sys/module/ipv6"
+ "ipv6", "/sys/module/ipv6",
+ "unix", "/proc/net/unix"
};
+#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);
+}
+#pragma GCC diagnostic pop
+
int kmod_setup(void) {
- unsigned i, n = 0;
- const char * cmdline[3 + ELEMENTSOF(kmod_table) + 1];
- ExecCommand command;
- ExecContext context;
- pid_t pid;
- int status, r;
+ unsigned i;
+ struct kmod_ctx *ctx = NULL;
+ struct kmod_module *mod;
+ int err;
for (i = 0; i < ELEMENTSOF(kmod_table); i += 2) {
if (access(kmod_table[i+1], F_OK) >= 0)
continue;
- log_info("Your kernel apparently lacks built-in %s support. Please fix that. "
- "We'll now try to work around this by calling '/sbin/modprobe %s'...",
- kmod_table[i], kmod_table[i]);
-
- cmdline[3 + n++] = kmod_table[i];
- }
-
- if (n <= 0)
- return 0;
-
- cmdline[0] = "/sbin/modprobe";
- cmdline[1] = "-qab";
- cmdline[2] = "--";
- cmdline[3 + n] = NULL;
-
- zero(command);
- zero(context);
-
- command.path = (char*) cmdline[0];
- command.argv = (char**) cmdline;
+ log_debug("Your kernel apparently lacks built-in %s support. Might be a good idea to compile it in. "
+ "We'll now try to work around this by loading the module...",
+ kmod_table[i]);
- exec_context_init(&context);
- r = exec_spawn(&command, NULL, &context, NULL, 0, NULL, false, false, false, NULL, &pid);
- exec_context_done(&context);
+ if (!ctx) {
+ ctx = kmod_new(NULL, NULL);
+ if (!ctx) {
+ log_error("Failed to allocate memory for kmod");
+ return -ENOMEM;
+ }
- if (r < 0)
- return r;
+ kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
- for (;;) {
- if (waitpid(pid, &status, 0) < 0) {
-
- if (errno == EINTR)
- continue;
-
- return -errno;
+ kmod_load_resources(ctx);
}
- break;
- }
-
- if (WIFEXITED(status)) {
- if (WEXITSTATUS(status) != 0) {
- log_warning("/sbin/modprobe failed with error code %i.", WEXITSTATUS(status));
- return -EPROTO;
+ err = kmod_module_new_from_name(ctx, kmod_table[i], &mod);
+ if (err < 0) {
+ log_error("Failed to load module '%s'", kmod_table[i]);
+ continue;
}
- log_debug("/sbin/modprobe succeeded.");
- return 0;
- }
+ err = kmod_module_probe_insert_module(mod, KMOD_PROBE_APPLY_BLACKLIST, 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'", kmod_module_get_name(mod));
- if (WIFSIGNALED(status)) {
- log_warning("/sbin/modprobe terminated by signal %s.", strsignal(WTERMSIG(status)));
- return -EPROTO;
+ kmod_module_unref(mod);
}
- log_warning("/sbin/modprobe failed due to unknown reason.");
- return -EPROTO;
+ if (ctx)
+ ctx = kmod_unref(ctx);
+
+ return 0;
}