Make doldacond-shell concurrency safe.

diff --git a/clients/gui-shell/dsh.c b/clients/gui-shell/dsh.c
index 1922aaf..9aa6a8e 100644 (file)
--- a/clients/gui-shell/dsh.c
+++ b/clients/gui-shell/dsh.c
@@ -396,6 +396,7 @@ void startdaemon(void)
 {
     char pf[1024];
     int pfd[2], i;
+    sigset_t ss;
     
     if(getenv("HOME") != NULL)
        snprintf(pf, sizeof(pf), "%s/.doldacond.pid", getenv("HOME"));
@@ -403,7 +404,11 @@ void startdaemon(void)
        snprintf(pf, sizeof(pf), "%s/.doldacond.pid", getpwuid(getuid())->pw_dir);
     if(access(pf, F_OK) || !running(pf)) {
        pipe(pfd);
+       sigemptyset(&ss);
+       sigaddset(&ss, SIGCHLD);
+       sigprocmask(SIG_BLOCK, &ss, NULL);
        if((dpid = fork()) == 0) {
+           sigprocmask(SIG_UNBLOCK, &ss, NULL);
            dup2(pfd[1], 2);
            for(i = 3; i < FD_SETSIZE; i++)
                close(i);
@@ -419,6 +424,7 @@ void startdaemon(void)
        create_start_wnd();
        gtk_widget_show(start_wnd);
        gtk_status_icon_set_tooltip(tray, _("Starting..."));
+       sigprocmask(SIG_UNBLOCK, &ss, NULL);
     } else {
        connectdc();
     }