1 files changed, 37 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/OR_USING_C/10.2.c b/reference/C/CONTRIB/OR_USING_C/10.2.c
new file mode 100644
index 0000000..c9ee9dd
--- /dev/null
+++ b/reference/C/CONTRIB/OR_USING_C/10.2.c
@@ -0,0 +1,37 @@
+#include <signal.h>
+#include <sys/ioctl.h>
+#include "10.h"
+
+stop(j)
+JOB *j;
+{
+    /*
+     * If the job is already stopped, we don't
+     * need to do anything.
+     */
+    if (j->status & JSTOPPED)
+        return;
+
+    /*
+     * If the job's process group is not that of the
+     * terminal, then the job is in the background
+     * and must be sent a stop signal.
+     */
+    if (j->pgrp != TermPgrp)
+        killpg(j->pgrp, SIGSTOP);
+
+    /*
+     * Mark the job as stopped.
+     */
+    j->status |= JSTOPPED;
+
+    /*
+     * If the terminal is not in the shell's process
+     * group, we need to put it there.
+     */
+    if (TermPgrp != MyPgrp) {
+        ioctl(1, TIOCSPGRP, &MyPgrp);
+        TermPgrp = MyPgrp;
+    }
+}
+