1 files changed, 61 insertions, 0 deletions
diff --git a/src/signal/misc.cc b/src/signal/misc.cc
new file mode 100644
index 0000000..e8b780e
--- /dev/null
+++ b/src/signal/misc.cc
@@ -0,0 +1,61 @@
+#include "signal_handler.h"
+
+#include <errno.h>
+
+namespace ov4
+{
+
+void signal_init()
+{
+    /* Install the signal handlers */
+    
+    sigemptyset(&block_job);
+    sigemptyset(&block_sig_TTOU);
+    sigemptyset(&block_io);
+
+    sigaddset(&block_job, SIGINT);
+    sigaddset(&block_job, SIGTSTP);
+    sigaddset(&block_job, SIGCHLD);
+    
+    sigaddset(&block_sig_TTOU, SIGTTOU);
+
+    sigaddset(&block_io, SIGTTOU);
+    sigaddset(&block_io, SIGTTIN);
+
+    Signal(SIGINT,  sigint_handler);   /* ctrl-c */
+    Signal(SIGTSTP, sigtstp_handler);  /* ctrl-z */
+    Signal(SIGCHLD, sigchld_handler);  /* Terminated or stopped child */
+
+    /* This one provides a clean way to kill the shell */
+    Signal(SIGQUIT, sigquit_handler); 
+}
+
+/*
+ * Signal - wrapper for the sigaction function
+ */
+handler_t *Signal([[maybe_unused]] int signum, handler_t *handler) 
+{
+    struct sigaction action, old_action;
+
+    action.sa_handler = handler;  
+    sigemptyset(&action.sa_mask); /* block sigs of type being handled */
+    action.sa_flags = SA_RESTART; /* restart syscalls if possible */
+
+    if (sigaction(signum, &action, &old_action) < 0)
+	unix_error("Signal error");
+    return (old_action.sa_handler);
+}
+
+int block_all(sigset_t *prev)
+{
+    sigset_t set;
+    sigfillset(&set);
+    return sigprocmask(SIG_SETMASK, &set, prev);
+}
+
+int block_handler(sigset_t *prev)
+{
+    return sigprocmask(SIG_BLOCK, &block_job, prev);
+}
+
+}
+\ No newline at end of file