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.)

diff --git a/src/core/socket.c b/src/core/socket.c
index 04177ea7a51404437f15d8a267d5c953f12a77b3..02841f0e2469e084f6c9fb0b41dde11b7b03a490 100644 (file)
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -1061,13 +1061,15 @@ static void socket_apply_socket_options(Socket *s, SocketPort *p, 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) {