nspawn: remove uuid socket

Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>

diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index b8b5f2eff1f00bb0c8c3a4087f4e2abd2178d579..d50033986106534bcf5ae29ad32a17fd09182d17 100644 (file)
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -3629,7 +3629,6 @@ static int outer_child(
                 const char *directory,
                 DissectedImage *dissected_image,
                 bool secondary,
-                int uuid_socket,
                 int fd_socket,
                 int kmsg_socket,
                 int rtnl_socket,
@@ -3656,7 +3655,6 @@ static int outer_child(
 
         assert(barrier);
         assert(directory);
-        assert(uuid_socket >= 0);
         assert(fd_socket >= 0);
         assert(master_pty_socket >= 0);
         assert(kmsg_socket >= 0);
@@ -4022,7 +4020,6 @@ static int outer_child(
         if (pid < 0)
                 return log_error_errno(errno, "Failed to fork inner child: %m");
         if (pid == 0) {
-                uuid_socket = safe_close(uuid_socket);
                 fd_socket = safe_close(fd_socket);
                 uid_shift_socket = safe_close(uid_shift_socket);
 
@@ -4049,7 +4046,7 @@ static int outer_child(
                 return log_error_errno(SYNTHETIC_ERRNO(EIO),
                                        "Short write while sending PID.");
 
-        l = send(uuid_socket, &arg_uuid, sizeof(arg_uuid), MSG_NOSIGNAL);
+        l = send(fd_socket, &arg_uuid, sizeof(arg_uuid), MSG_NOSIGNAL);
         if (l < 0)
                 return log_error_errno(errno, "Failed to send machine ID: %m");
         if (l != sizeof(arg_uuid))
@@ -4060,7 +4057,6 @@ static int outer_child(
         if (l < 0)
                 return log_error_errno(l, "Failed to send notify fd: %m");
 
-        uuid_socket = safe_close(uuid_socket);
         fd_socket = safe_close(fd_socket);
         master_pty_socket = safe_close(master_pty_socket);
         kmsg_socket = safe_close(kmsg_socket);
@@ -4765,7 +4761,6 @@ static int run_container(
         _cleanup_close_pair_ int
                 kmsg_socket_pair[2] = { -1, -1 },
                 rtnl_socket_pair[2] = { -1, -1 },
-                uuid_socket_pair[2] = { -1, -1 },
                 fd_socket_pair[2] = { -EBADF, -EBADF },
                 uid_shift_socket_pair[2] = { -1, -1 },
                 master_pty_socket_pair[2] = { -1, -1 },
@@ -4812,9 +4807,6 @@ static int run_container(
         if (socketpair(AF_UNIX, SOCK_SEQPACKET|SOCK_CLOEXEC, 0, rtnl_socket_pair) < 0)
                 return log_error_errno(errno, "Failed to create rtnl socket pair: %m");
 
-        if (socketpair(AF_UNIX, SOCK_SEQPACKET|SOCK_CLOEXEC, 0, uuid_socket_pair) < 0)
-                return log_error_errno(errno, "Failed to create id socket pair: %m");
-
         if (socketpair(AF_UNIX, SOCK_SEQPACKET|SOCK_CLOEXEC, 0, fd_socket_pair) < 0)
                 return log_error_errno(errno, "Failed to create notify socket pair: %m");
 
@@ -4866,7 +4858,6 @@ static int run_container(
 
                 kmsg_socket_pair[0] = safe_close(kmsg_socket_pair[0]);
                 rtnl_socket_pair[0] = safe_close(rtnl_socket_pair[0]);
-                uuid_socket_pair[0] = safe_close(uuid_socket_pair[0]);
                 fd_socket_pair[0] = safe_close(fd_socket_pair[0]);
                 master_pty_socket_pair[0] = safe_close(master_pty_socket_pair[0]);
                 uid_shift_socket_pair[0] = safe_close(uid_shift_socket_pair[0]);
@@ -4879,7 +4870,6 @@ static int run_container(
                                 arg_directory,
                                 dissected_image,
                                 secondary,
-                                uuid_socket_pair[1],
                                 fd_socket_pair[1],
                                 kmsg_socket_pair[1],
                                 rtnl_socket_pair[1],
@@ -4900,7 +4890,6 @@ static int run_container(
 
         kmsg_socket_pair[1] = safe_close(kmsg_socket_pair[1]);
         rtnl_socket_pair[1] = safe_close(rtnl_socket_pair[1]);
-        uuid_socket_pair[1] = safe_close(uuid_socket_pair[1]);
         fd_socket_pair[1] = safe_close(fd_socket_pair[1]);
         master_pty_socket_pair[1] = safe_close(master_pty_socket_pair[1]);
         uid_shift_socket_pair[1] = safe_close(uid_shift_socket_pair[1]);
@@ -4980,7 +4969,7 @@ static int run_container(
                 return log_error_errno(SYNTHETIC_ERRNO(EIO), "Short read while reading inner child PID.");
 
         /* We also retrieve container UUID in case it was generated by outer child */
-        l = recv(uuid_socket_pair[0], &arg_uuid, sizeof arg_uuid, 0);
+        l = recv(fd_socket_pair[0], &arg_uuid, sizeof arg_uuid, 0);
         if (l < 0)
                 return log_error_errno(errno, "Failed to read container machine ID: %m");
         if (l != sizeof(arg_uuid))