From 1d8b5a6f9c66a4c5a696b342ed2f8d472381ed2d Mon Sep 17 00:00:00 2001
From: cyp0633 <cyp0633@cyp0633.icu>
Date: Wed, 25 May 2022 10:44:33 +0800
Subject: [PATCH] Shell Lab: trace06

---
 shlab/tsh.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/shlab/tsh.c b/shlab/tsh.c
index 0a6bf8d..0ef2bc6 100644
--- a/shlab/tsh.c
+++ b/shlab/tsh.c
@@ -325,6 +325,16 @@ void sigchld_handler(int sig)
         {
             deletejob(jobs,pid); // remove pid from job list
         }
+        if (WIFSIGNALED(status))
+        {
+            printf("Job [%d] (%d) terminated by signal %d\n", pid2jid(pid), pid, WTERMSIG(status));
+            deletejob(jobs, pid);
+        }
+
+    }
+    if (pid < 0 && errno != ECHILD)
+    {
+        unix_error("waitpid error");
     }
     return;
 }
@@ -334,8 +344,13 @@ void sigchld_handler(int sig)
  *    user types ctrl-c at the keyboard.  Catch it and send it along
  *    to the foreground job.  
  */
-void sigint_handler(int sig) 
+void sigint_handler(int sig)
 {
+    pid_t pid = fgpid(jobs);    // get pid of foreground job
+    if (kill(-pid, SIGINT) < 0) // try to send SIGINT
+    {
+        unix_error("sigint error"); // failed
+    }
     return;
 }