9term: fix getpts on linux
Openpty uses grantpt internally and its behavior is
unspecified when a handler is set to catch SIGCHLD.
Fixes issue 37. http://code.swtch.com/plan9port/issues/37
R=rsc
CC=codebot
http://codereview.appspot.com/1209049
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 4a200cd..21efdc2 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -5,6 +5,7 @@
Albert Lee <trisk@acm.jhu.edu>
André Günther <Andre.G@gmx.de>
+Anthony Martin <ality@pbrane.org>
Anthony Sorace <a@9srv.net>
Arvindh Rajesh Tamilmani <art@a-30.net>
Benjamin Huntsman <BHuntsman@mail2.cu-portland.edu>
diff --git a/src/cmd/9term/Linux.c b/src/cmd/9term/Linux.c
index a9bf6f9..449ddde 100644
--- a/src/cmd/9term/Linux.c
+++ b/src/cmd/9term/Linux.c
@@ -1,13 +1,18 @@
#define getpts not_using_this_getpts
#include "bsdpty.c"
#undef getpts
+#include <signal.h>
int
getpts(int fd[], char *slave)
{
+ void (*f)(int);
+
+ f = signal(SIGCHLD, SIG_DFL);
if(openpty(&fd[1], &fd[0], NULL, NULL, NULL) >= 0){
fchmod(fd[1], 0620);
strcpy(slave, ttyname(fd[0]));
+ signal(SIGCHLD, f);
return 0;
}
sysfatal("no ptys");
