X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Fkmod-setup.c;h=fd0a0e06adcdff080d7af7512a216ebb25e4bca8;hb=609c3029076da1ba423673161e5d0fc82ccca6b6;hp=bc3460a698b3e73b41c1ae0e5722933339d7d302;hpb=7491e6e7c5fcb3c445a0656a440bd1551adb6ba1;p=elogind.git

diff --git a/src/core/kmod-setup.c b/src/core/kmod-setup.c
index bc3460a69..fd0a0e06a 100644
--- a/src/core/kmod-setup.c
+++ b/src/core/kmod-setup.c
@@ -23,16 +23,17 @@
 #include <unistd.h>
 #include <string.h>
 #include <errno.h>
+
+#ifdef HAVE_KMOD
 #include <libkmod.h>
+#endif
 
 #include "macro.h"
 #include "execute.h"
-
+#include "capability.h"
 #include "kmod-setup.h"
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wformat-nonliteral"
-
+#ifdef HAVE_KMOD
 static void systemd_kmod_log(
                 void *data,
                 int priority,
@@ -42,21 +43,37 @@ static void systemd_kmod_log(
                 va_list args) {
 
         /* library logging is enabled at debug only */
+        DISABLE_WARNING_FORMAT_NONLITERAL;
         log_metav(LOG_DEBUG, file, line, fn, format, args);
+        REENABLE_WARNING;
 }
 
-#pragma GCC diagnostic pop
-
-static bool kmod_check_cmdline(void) {
+static bool cmdline_check_kdbus(void) {
         _cleanup_free_ char *line = NULL;
+        const char *p;
+        int r;
 
-        if (proc_cmdline(&line) < 0)
+        r = proc_cmdline(&line);
+        if (r < 0)
                 return false;
 
-        return strstr(line, "kdbus") == 0;
+        p = line;
+        for (;;) {
+                _cleanup_free_ char *word = NULL;
+
+                r = unquote_first_word(&p, &word, true);
+                if (r <= 0)
+                        return false;
+
+                if (streq(word, "kdbus"))
+                        return true;
+        }
 }
+#endif
 
 int kmod_setup(void) {
+#ifdef HAVE_KMOD
+
         static const struct {
                 const char *module;
                 const char *path;
@@ -73,19 +90,22 @@ int kmod_setup(void) {
                 { "unix",    "/proc/net/unix",         true, NULL },
 
                 /* IPC is needed before we bring up any other services */
-                { "kdbus",   "/sys/bus/kdbus",         false, kmod_check_cmdline },
+                { "kdbus",   "/sys/fs/kdbus",          false, cmdline_check_kdbus },
         };
         struct kmod_ctx *ctx = NULL;
         unsigned int i;
         int r;
 
+        if (have_effective_cap(CAP_SYS_MODULE) == 0)
+                return 0;
+
         for (i = 0; i < ELEMENTSOF(kmod_table); i++) {
                 struct kmod_module *mod;
 
-                if (kmod_table[i].condition_fn && kmod_table[i].condition_fn())
+                if (kmod_table[i].path && access(kmod_table[i].path, F_OK) >= 0)
                         continue;
 
-                if (access(kmod_table[i].path, F_OK) >= 0)
+                if (kmod_table[i].condition_fn && !kmod_table[i].condition_fn())
                         continue;
 
                 if (kmod_table[i].warn)
@@ -113,7 +133,7 @@ int kmod_setup(void) {
                         log_info("Inserted module '%s'", kmod_module_get_name(mod));
                 else if (r == KMOD_PROBE_APPLY_BLACKLIST)
                         log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
-                else
+                else if (kmod_table[i].warn)
                         log_error("Failed to insert module '%s'", kmod_module_get_name(mod));
 
                 kmod_module_unref(mod);
@@ -122,5 +142,6 @@ int kmod_setup(void) {
         if (ctx)
                 kmod_unref(ctx);
 
+#endif
         return 0;
 }