From b54feb837cb0a031e4f36a74e532e688900cd9ce Mon Sep 17 00:00:00 2001
From: Davin McCall <davmac@davmac.org>
Date: Sat, 18 Jun 2016 20:37:14 +0100
Subject: [PATCH] Don't display "can't bind socket: read only file sytem" error
 on the first attempt to bind the control socket (immediately after starting).
 It's pretty normal for the filesystem to be mounted read-only at that stage.

---
 src/dinit.cc   | 10 ++++++----
 src/service.cc |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/dinit.cc b/src/dinit.cc
index 1b8fc65..d7153a3 100644
--- a/src/dinit.cc
+++ b/src/dinit.cc
@@ -72,7 +72,7 @@ static void close_control_socket() noexcept;
 
 static void control_socket_cb(EventLoop_t *loop, int fd);
 
-void open_control_socket() noexcept;
+void open_control_socket(bool report_ro_failure = true) noexcept;
 void setup_external_log() noexcept;
 
 
@@ -327,7 +327,7 @@ int main(int argc, char **argv)
     sigterm_watcher.addWatch(eventLoop, SIGTERM);
 
     // Try to open control socket (may fail due to readonly filesystem)
-    open_control_socket();
+    open_control_socket(false);
     
 #ifdef __linux__
     if (am_system_init) {
@@ -454,7 +454,7 @@ static void control_socket_cb(EventLoop_t *loop, int sockfd)
     }
 }
 
-void open_control_socket() noexcept
+void open_control_socket(bool report_ro_failure) noexcept
 {
     if (! control_socket_open) {
         const char * saddrname = control_socket_path;
@@ -485,7 +485,9 @@ void open_control_socket() noexcept
         }
 
         if (bind(sockfd, (struct sockaddr *) name, sockaddr_size) == -1) {
-            log(LogLevel::ERROR, "Error binding control socket: ", strerror(errno));
+            if (errno != EROFS || report_ro_failure) {
+                log(LogLevel::ERROR, "Error binding control socket: ", strerror(errno));
+            }
             close(sockfd);
             free(name);
             return;
diff --git a/src/service.cc b/src/service.cc
index c81b0cb..4638854 100644
--- a/src/service.cc
+++ b/src/service.cc
@@ -23,7 +23,7 @@
  */
 
 // from dinit.cc:
-void open_control_socket() noexcept;
+void open_control_socket(bool report_ro_failure = true) noexcept;
 void setup_external_log() noexcept;
 extern EventLoop_t eventLoop;
 
-- 
2.25.1