kernel: signal: Add SIGTERM

Signed-off-by: Ian Moffett <ian@osmora.org>

3 files changed, 20 insertions, 0 deletions

diff --git a/sys/include/sys/signal.h b/sys/include/sys/signal.h
index 9fc767d..eaf2d41 100644
--- a/sys/include/sys/signal.h
+++ b/sys/include/sys/signal.h
@@ -37,6 +37,7 @@
 #define SIGFPE      8   /* Floating point exception */
 #define SIGKILL     9   /* Kill */
 #define SIGSEGV     11  /* Segmentation violation */
+#define SIGTERM     15  /* Terminate gracefully */
 
 typedef uint32_t sigset_t;
 
@@ -80,5 +81,6 @@ int sigismember(const sigset_t *set, int signo);
 void sigfpe_default(int signo);
 void sigkill_default(int signo);
 void sigsegv_default(int signo);
+void sigterm_default(int signo);
 #endif  /* _KERNEL */
 #endif  /* !_SYS_SIGNAL_H_ */
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c
index 58bd52d..044de7b 100644
--- a/sys/kern/kern_sig.c
+++ b/sys/kern/kern_sig.c
@@ -58,6 +58,12 @@ static struct sigaction sa_tab[] = {
         .sa_flags = 0,
         .sa_sigaction = NULL
     },
+    [SIGTERM] = {
+        .sa_handler = sigterm_default,
+        .sa_mask = 0,
+        .sa_flags = 0,
+        .sa_sigaction = NULL
+    }
 };
 
 /*
diff --git a/sys/kern/kern_stub.c b/sys/kern/kern_stub.c
index 17c6e54..a9a56ac 100644
--- a/sys/kern/kern_stub.c
+++ b/sys/kern/kern_stub.c
@@ -70,6 +70,18 @@ sigsegv_default(int signo)
     exit1(td, 0);
 }
 
+void
+sigterm_default(int signo)
+{
+    static struct proc *td;
+
+    td = this_td();
+    syslog_silence(false);
+    kprintf(OMIT_TIMESTAMP "Terminated (pid=%d)\n", td->pid);
+    syslog_silence(true);
+    exit1(td, 0);
+}
+
 int
 dev_noread(void)
 {