execute: fix terminal chowning logic

diff --git a/execute.c b/execute.c
index a82d016cbcaed28a05d7d804b0e077a87219d360..73d82d5a76218ac50d839ec80466b8d6fe5e80e1 100644 (file)
--- a/execute.c
+++ b/execute.c
@@ -342,8 +342,7 @@ static int chown_terminal(int fd, uid_t uid) {
         if (fstat(fd, &st) < 0)
                 return -errno;
 
-        if (st.st_uid != uid ||
-            st.st_mode != TTY_MODE)
+        if (st.st_uid != uid || (st.st_mode & 0777) != TTY_MODE)
                 return -EPERM;
 
         return 0;
@@ -834,6 +833,12 @@ int exec_spawn(ExecCommand *command,
                                 r = EXIT_USER;
                                 goto fail;
                         }
+
+                        if (is_terminal_input(context->std_input))
+                                if (chown_terminal(STDIN_FILENO, uid) < 0) {
+                                        r = EXIT_STDIN;
+                                        goto fail;
+                                }
                 }
 
                 if (apply_permissions)
@@ -842,12 +847,6 @@ int exec_spawn(ExecCommand *command,
                                 goto fail;
                         }
 
-                if (is_terminal_input(context->std_input))
-                        if (chown_terminal(STDIN_FILENO, uid) < 0) {
-                                r = EXIT_STDIN;
-                                goto fail;
-                        }
-
                 if (apply_chroot) {
                         if (context->root_directory)
                                 if (chroot(context->root_directory) < 0) {