socket: add option for SO_PASSCRED

Add an option to enable SO_PASSCRED for unix sockets.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/socket.c b/src/socket.c
index 7ddf326a22..0864cce86d 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -406,6 +406,7 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) {
                 "%sFreeBind: %s\n"
                 "%sTransparent: %s\n"
                 "%sBroadcast: %s\n"
+                "%sPassCred: %s\n"
                 "%sTCPCongestion: %s\n",
                 prefix, socket_state_to_string(s->state),
                 prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only),
@@ -416,6 +417,7 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) {
                 prefix, yes_no(s->free_bind),
                 prefix, yes_no(s->transparent),
                 prefix, yes_no(s->broadcast),
+                prefix, yes_no(s->pass_cred),
                 prefix, strna(s->tcp_congestion));
 
         if (s->control_pid > 0)
@@ -657,6 +659,12 @@ static void socket_apply_socket_options(Socket *s, int fd) {
                         log_warning("SO_BROADCAST failed: %m");
         }
 
+        if (s->pass_cred) {
+                int one = 1;
+                if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0)
+                        log_warning("SO_PASSCRED failed: %m");
+        }
+
         if (s->priority >= 0)
                 if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0)
                         log_warning("SO_PRIORITY failed: %m");