sd-bus,log: remove unused variables

[elogind.git] / src / libsystemd / sd-bus / bus-kernel.c

diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c
index f49fb5b3944bf9faae6f9d42803fa829ecb78f2b..8b961c38eb2ffe6e72c444ba99609a1e823fa909 100644 (file)
--- a/src/libsystemd/sd-bus/bus-kernel.c
+++ b/src/libsystemd/sd-bus/bus-kernel.c
@@ -1402,11 +1402,20 @@ static int bus_kernel_translate_policy(const BusNamePolicy *policy, struct kdbus
         return 0;
 }
 
-int bus_kernel_open_bus_fd(const char *bus) {
+int bus_kernel_open_bus_fd(const char *bus, char **path) {
         char *p;
         int fd;
+        size_t len;
 
-        p = alloca(strlen("/dev/kdbus/") + DECIMAL_STR_MAX(uid_t) + 1 + strlen(bus) + strlen("/bus") + 1);
+        len = strlen("/dev/kdbus/") + DECIMAL_STR_MAX(uid_t) + 1 + strlen(bus) + strlen("/bus") + 1;
+
+        if (path) {
+                p = malloc(len);
+                if (!p)
+                        return -ENOMEM;
+                *path = p;
+        } else
+                p = alloca(len);
         sprintf(p, "/dev/kdbus/" UID_FMT "-%s/bus", getuid(), bus);
 
         fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC);
@@ -1549,7 +1558,7 @@ int bus_kernel_create_monitor(const char *bus) {
 
         assert(bus);
 
-        fd = bus_kernel_open_bus_fd(bus);
+        fd = bus_kernel_open_bus_fd(bus, NULL);
         if (fd < 0)
                 return fd;