Apparently SIGCHLD is blocked by default in processes run in a

[PuTTY.git] / unix / pty.c

diff --git a/unix/pty.c b/unix/pty.c
index 50b548ce437f4b454660a4199bc74cbbc3f5f10d..b9bd510b1f83326caecba322f005f66240d87fc2 100644 (file)
--- a/unix/pty.c
+++ b/unix/pty.c
@@ -621,10 +621,18 @@ static const char *pty_init(void *frontend, void **backend_handle, Config *cfg,
        /*
         * SIGINT and SIGQUIT may have been set to ignored by our
         * parent, particularly by things like sh -c 'pterm &' and
-        * some window managers. Reverse this for our child process.
+        * some window managers. SIGCHLD, meanwhile, has been
+        * tinkered with by the watchdog process. Reverse all this
+        * for our child process.
         */
        putty_signal(SIGINT, SIG_DFL);
        putty_signal(SIGQUIT, SIG_DFL);
+       {
+           sigset_t set;
+           sigemptyset(&set);
+           sigaddset(&set, SIGCHLD);
+           sigprocmask(SIG_UNBLOCK, &set, NULL);
+       }
        if (pty_argv)
            execvp(pty_argv[0], pty_argv);
        else {