Description: Use sigaction (instead of signal)

 BSD semantics has SA_RESTART, which kills a part of behaviors of ttyrec.

 Use sigaction for better control.

  * doinput should be interrupted

  * dooutput should not be interrupted

Auther: NIIBE Yutaka <gniibe@fsij.org>

Suggested-By: Joey Hess <joeyh@debian.org>

Reviewed-By: NIIBE Yutaka <gniibe@fsij.org>

Last-Update: 2010-04-27

--- ttyrec-1.0.8.orig/ttyrec.c	2010-04-27 12:37:27.000000000 +0900

+++ ttyrec-1.0.8/ttyrec.c	2010-04-27 12:45:18.000000000 +0900

@@ -125,6 +125,7 @@

 	int argc;

 	char *argv[];

 {

+	struct sigaction sa;

 	extern int optind;

 	int ch;

 	void finish();

@@ -168,7 +169,10 @@

 	getmaster();

 	fixtty();

-	(void) signal(SIGCHLD, finish);

+	sigemptyset(&sa.sa_mask);

+	sa.sa_flags = 0;

+	sa.sa_handler = finish;

+	sigaction(SIGCHLD, &sa, NULL);

 	child = fork();

 	if (child < 0) {

 		perror("fork");

@@ -180,12 +184,16 @@

 			perror("fork");

 			fail();

 		}

-		if (child)

+		if (child) {

+			sa.sa_flags = SA_RESTART;

+			sigaction(SIGCHLD, &sa, NULL);

 			dooutput();

-		else

+		} else

 			doshell(command);

 	}

-	signal(SIGWINCH, resize);

+	sa.sa_handler = resize;

+	sa.sa_flags = SA_RESTART;

+	sigaction(SIGWINCH, &sa, NULL);

 	doinput();

 	return 0;