From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 7 Nov 2014 15:32:06 +0000 (+0100)
Subject: core: unify how we create the notify and private dbus socket
X-Git-Tag: v218~499
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=f0e62e89970b8c38eb07a9beebd277ce13a5fcc2

core: unify how we create the notify and private dbus socket

Use the same robust logic of mkdir + unlink of any existing AF_UNIX
socket, ignoring the return value, right before bind().
---

diff --git a/src/core/dbus.c b/src/core/dbus.c
index 185057b62..9cb198a13 100644
--- a/src/core/dbus.c
+++ b/src/core/dbus.c
@@ -974,11 +974,10 @@ static int bus_init_private(Manager *m) {
                 left = strpcpy(&p, left, "/systemd/private");
 
                 salen = sizeof(sa.un) - left;
-
-                mkdir_parents_label(sa.un.sun_path, 0755);
         }
 
-        unlink(sa.un.sun_path);
+        (void) mkdir_parents_label(sa.un.sun_path, 0755);
+        (void) unlink(sa.un.sun_path);
 
         fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
         if (fd < 0) {
diff --git a/src/core/manager.c b/src/core/manager.c
index e59649464..350f2f388 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -679,26 +679,13 @@ static int manager_setup_notify(Manager *m) {
                         return log_oom();
 
                 (void) mkdir_parents_label(m->notify_socket, 0755);
+                (void) unlink(m->notify_socket);
 
                 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
                 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
                 if (r < 0) {
                         log_error("bind(%s) failed: %m", sa.un.sun_path);
-                        if (errno == EADDRINUSE) {
-                                log_notice("Removing %s socket and trying again.", m->notify_socket);
-                                r = unlink(m->notify_socket);
-                                if (r < 0) {
-                                        log_error("Failed to remove %s: %m", m->notify_socket);
-                                        return -EADDRINUSE;
-                                }
-
-                                r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
-                                if (r < 0) {
-                                        log_error("bind(%s) failed: %m", sa.un.sun_path);
-                                        return -errno;
-                                }
-                        } else
-                                return -errno;
+                        return -errno;
                 }
 
                 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));