From: Andre Noll <maan@systemlinux.org>
Date: Sun, 8 Apr 2012 03:03:52 +0000 (+0200)
Subject: interactive: Honor SIGTERM.
X-Git-Tag: v0.4.12~7^2~11
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=56561c08cf6cfe28bccebc513bcec057d8bb9afa

interactive: Honor SIGTERM.

Currently i9e_signal_dispatch() only looks at SIGINT and ignores all
other signals. We'd like to honor SIGTERM as well because this provides
a handy way for other paraslash tasks to shut down the i9e subsystem,
even if no signal was received.
---

diff --git a/error.h b/error.h
index 43d9eef2..8b1ae341 100644
--- a/error.h
+++ b/error.h
@@ -485,6 +485,7 @@ extern const char **para_errlist[];
 #define INTERACTIVE_ERRORS \
 	PARA_ERROR(I9E_EOF, "end of input"), \
 	PARA_ERROR(I9E_SETUPTERM, "failed to set up terminal"), \
+	PARA_ERROR(I9E_TERM_RQ, "received termination request"), \
 
 /** \endcond errors */
 
diff --git a/interactive.c b/interactive.c
index f2e4a355..dda5f84e 100644
--- a/interactive.c
+++ b/interactive.c
@@ -33,6 +33,7 @@ struct i9e_private {
 	bool line_handler_running;
 	bool input_eof;
 	bool caught_sigint;
+	bool caught_sigterm;
 };
 static struct i9e_private i9e_private, *i9ep = &i9e_private;
 
@@ -271,16 +272,19 @@ static void i9e_post_select(struct sched *s, struct task *t)
 	char *buf;
 	size_t sz;
 
-	if (i9ep->input_eof) {
-		t->error = -E_I9E_EOF;
-		return;
-	}
+	ret = -E_I9E_EOF;
+	if (i9ep->input_eof)
+		goto rm_btrn;
+	ret = -E_I9E_TERM_RQ;
+	if (i9ep->caught_sigterm)
+		goto rm_btrn;
 	if (!btrn) {
 		i9ep->caught_sigint = false;
 		if (FD_ISSET(ici->fds[0], &s->rfds))
 			i9e_input();
 		return;
 	}
+	ret = 0;
 	if (i9ep->caught_sigint)
 		goto rm_btrn;
 	ret = btr_node_status(i9ep->stdout_btrn, 0, BTR_NT_LEAF);
@@ -306,7 +310,7 @@ static void i9e_pre_select(struct sched *s, __a_unused struct task *t)
 {
 	int ret;
 
-	if (i9ep->input_eof || i9ep->caught_sigint) {
+	if (i9ep->input_eof || i9ep->caught_sigint || i9ep->caught_sigterm) {
 		sched_min_delay(s);
 		return;
 	}
@@ -433,6 +437,8 @@ void i9e_signal_dispatch(int sig_num)
 		reset_line_state();
 		i9ep->caught_sigint = true;
 	}
+	if (sig_num == SIGTERM)
+		i9ep->caught_sigterm = true;
 }
 
 /**