socket: downgrade log warnings about inability to set socket buffer sizes

In containers we might lack the privs to up the socket buffers. Let's
not complain so loudly about that. Let's hence downgrade this to debug
logging if it's a permission problem.

(This wasn't an issue before b92f350789e33942be0cf85af22a580c1fd483d6
because back then the failures wouldn't be detected at all.)

(cherry picked from commit 35b4e3c1bc7d4001244ff3986c084152c8901d03)

diff --git a/src/core/socket.c b/src/core/socket.c
index 33e6013b03e7ce3f1fee29756581da2e878719bb..809cac68a9f6999025994ef1af6b833702f1c350 100644 (file)
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -1075,13 +1075,15 @@ static void socket_apply_socket_options(Socket *s, int fd) {
         if (s->receive_buffer > 0) {
                 r = fd_set_rcvbuf(fd, s->receive_buffer, false);
                 if (r < 0)
-                        log_unit_warning_errno(UNIT(s), r, "SO_RCVBUF/SO_RCVBUFFORCE failed: %m");
+                        log_unit_full_errno(UNIT(s), ERRNO_IS_PRIVILEGE(r) ? LOG_DEBUG : LOG_WARNING, r,
+                                            "SO_RCVBUF/SO_RCVBUFFORCE failed: %m");
         }
 
         if (s->send_buffer > 0) {
                 r = fd_set_sndbuf(fd, s->send_buffer, false);
                 if (r < 0)
-                        log_unit_warning_errno(UNIT(s), r, "SO_SNDBUF/SO_SNDBUFFORCE failed: %m");
+                        log_unit_full_errno(UNIT(s), ERRNO_IS_PRIVILEGE(r) ? LOG_DEBUG : LOG_WARNING, r,
+                                            "SO_SNDBUF/SO_SNDBUFFORCE failed: %m");
         }
 
         if (s->mark >= 0) {