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authorKay Sievers <kay@vrfy.org>2012-04-11 12:59:52 +0200
committerKay Sievers <kay@vrfy.org>2012-04-11 16:03:51 +0200
commitb30e2f4c18ad81b04e4314fd191a5d458553773c (patch)
treede15b901a08d681a7a1e95c7a2d692b0ec181708 /src/core/kmod-setup.c
parent9543ad166338a7bef8718070f11465df4b9badd7 (diff)
move libsystemd_core.la sources into core/
Diffstat (limited to 'src/core/kmod-setup.c')
-rw-r--r--src/core/kmod-setup.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/src/core/kmod-setup.c b/src/core/kmod-setup.c
new file mode 100644
index 0000000000..debf87130d
--- /dev/null
+++ b/src/core/kmod-setup.c
@@ -0,0 +1,96 @@
+/*-*- 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 General Public License as published by
+ the Free Software Foundation; either version 2 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/wait.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <libkmod.h>
+
+#include "macro.h"
+#include "execute.h"
+
+#include "kmod-setup.h"
+
+static const char * const kmod_table[] = {
+ "autofs4", "/sys/class/misc/autofs",
+ "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;
+ 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_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]);
+
+ if (!ctx) {
+ ctx = kmod_new(NULL, NULL);
+ if (!ctx) {
+ log_error("Failed to allocate memory for kmod");
+ return -ENOMEM;
+ }
+
+ kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
+
+ kmod_load_resources(ctx);
+ }
+
+ 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;
+ }
+
+ 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));
+
+ kmod_module_unref(mod);
+ }
+
+ if (ctx)
+ kmod_unref(ctx);
+
+ return 0;
+}