From: nobu@...
Date: 2006-04-11T22:52:03+09:00
Subject: Re: Strange problem with PTY.spawn()

Hi,

At Tue, 11 Apr 2006 00:22:42 +0900,
Reto Schuettel wrote in [ruby-talk:188393]:
> > I've attached the output of truss. Please let me know if more
> > information is needed.
> 
> *grmbl* and here it is ... :/ (I hope the ML doesn't reject mails with
> attachements).

Seems grantpt() failed.  Can't you try with this patch?


Index: ext/pty/pty.c
===================================================================
RCS file: /cvs/ruby/src/ruby/ext/pty/pty.c,v
retrieving revision 1.19.2.3
diff -p -U2 -r1.19.2.3 pty.c
--- ext/pty/pty.c	8 Sep 2005 05:59:40 -0000	1.19.2.3
+++ ext/pty/pty.c	11 Apr 2006 13:51:09 -0000
@@ -350,4 +350,5 @@ getDevice(master,slave)
 
     if((i = open("/dev/ptmx", O_RDWR, 0)) != -1) {
+	int e;
 	s = signal(SIGCHLD, SIG_DFL);
 	if(grantpt(i) != -1) {
@@ -372,7 +373,9 @@ getDevice(master,slave)
 	    }
 	}
+	e = errno;
 	close(i);
+	errno = e;
     }
-    rb_raise(rb_eRuntimeError, "can't get Master/Slave device");
+    rb_sys_fail("can't get Master/Slave device");
 #else
     char **p;


-- 
Nobu Nakada