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authorLennart Poettering <lennart@poettering.net>2013-05-07 17:48:25 +0200
committerLennart Poettering <lennart@poettering.net>2013-05-07 17:52:23 +0200
commitb4b879648c378e7cfaef940489c3c1ccc21b27e0 (patch)
treebc6166e9217fde5c22dce1325701043655799075 /src/core/kmod-setup.c
parentsystemd-sleep: it is not an error if the config file is missing (diff)
downloadsystemd-b4b879648c378e7cfaef940489c3c1ccc21b27e0.tar.xz
systemd-b4b879648c378e7cfaef940489c3c1ccc21b27e0.zip
kmod-setup: properly iterate through module table
Previously we skipped every second entry. This also cleans up much of the code and removes some dead code.
Diffstat (limited to '')
-rw-r--r--src/core/kmod-setup.c72
1 files changed, 39 insertions, 33 deletions
diff --git a/src/core/kmod-setup.c b/src/core/kmod-setup.c
index 20ab232374..e4885fb212 100644
--- a/src/core/kmod-setup.c
+++ b/src/core/kmod-setup.c
@@ -30,66 +30,72 @@
#include "kmod-setup.h"
-typedef struct Kmodule {
- const char *name;
- const char *directory;
- bool (*condition_fn)(void);
-} KModule;
-
-static const KModule kmod_table[] = {
- { "autofs4", "/sys/class/misc/autofs", NULL } ,
- { "ipv6", "/sys/module/ipv6", NULL },
- { "unix", "/proc/net/unix", NULL } ,
-};
-
#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)
-{
+
+static void systemd_kmod_log(
+ void *data,
+ int priority,
+ const char *file, int line,
+ const char *fn,
+ const char *format,
+ va_list args) {
+
/* library logging is enabled at debug only */
log_metav(LOG_DEBUG, file, line, fn, format, args);
}
+
#pragma GCC diagnostic pop
int kmod_setup(void) {
- unsigned i;
+
+ static const char kmod_table[] =
+ /* This one we need to load explicitly, since
+ * auto-loading on use doesn't work before udev
+ * created the ghost device nodes, and we need it
+ * earlier than that. */
+ "autofs4\0" "/sys/class/misc/autofs\0"
+
+ /* This one we need to load explicitly, since
+ * auto-loading of IPv6 is not done when we try to
+ * configure ::1 on the loopback device. */
+ "ipv6\0" "/sys/module/ipv6\0"
+
+ "unix\0" "/proc/net/unix\0";
+
struct kmod_ctx *ctx = NULL;
- struct kmod_module *mod;
- int err;
+ const char *name, *path;
+ int r;
- for (i = 0; i < ELEMENTSOF(kmod_table); i += 2) {
- if (kmod_table[i].condition_fn && !kmod_table[i].condition_fn())
- continue;
+ NULSTR_FOREACH_PAIR(name, path, kmod_table) {
+ struct kmod_module *mod;
- if (access(kmod_table[i].directory, F_OK) >= 0)
+ if (access(path, 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].name);
+ name);
if (!ctx) {
ctx = kmod_new(NULL, NULL);
- if (!ctx) {
- log_error("Failed to allocate memory for kmod");
- return -ENOMEM;
- }
+ if (!ctx)
+ return log_oom();
kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
kmod_load_resources(ctx);
}
- err = kmod_module_new_from_name(ctx, kmod_table[i].name, &mod);
- if (err < 0) {
- log_error("Failed to lookup module '%s'", kmod_table[i].name);
+ r = kmod_module_new_from_name(ctx, name, &mod);
+ if (r < 0) {
+ log_error("Failed to lookup module '%s'", name);
continue;
}
- err = kmod_module_probe_insert_module(mod, KMOD_PROBE_APPLY_BLACKLIST, NULL, NULL, NULL, NULL);
- if (err == 0)
+ r = kmod_module_probe_insert_module(mod, KMOD_PROBE_APPLY_BLACKLIST, NULL, NULL, NULL, NULL);
+ if (r == 0)
log_info("Inserted module '%s'", kmod_module_get_name(mod));
- else if (err == KMOD_PROBE_APPLY_BLACKLIST)
+ else if (r == KMOD_PROBE_APPLY_BLACKLIST)
log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
else
log_error("Failed to insert module '%s'", kmod_module_get_name(mod));