# Io/console IO#raw error when io is closed in the block

**URL:** <https://www.ruby-forum.com/t/io-console-io-raw-error-when-io-is-closed-in-the-block/188253>\
**Category:** Development\
**Created:** [May 8, 2010, 1:34pm UTC](https://www.ruby-forum.com/t/io-console-io-raw-error-when-io-is-closed-in-the-block/188253 "2010-05-08T13:34:28Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [May 8, 2010, 1:34pm UTC](https://www.ruby-forum.com/t/io-console-io-raw-error-when-io-is-closed-in-the-block/188253/1 "2010-05-08T13:34:28Z")

</div>

io/console e$B$r;H$C$F$\_$?$N$G$9$,!"$A$g$C$H$&$^$/;H$($^$;$s!#e(B  
IO#raw e$B$,e(B tty  
e$B$N\>uBV$rI,$:85$K$b$I$9$s$G$9$,!"$=$l$,$A$g$C$H:$$j$^$9!#e(B

e$B0J2\<$N$h$&$K!"e(Bpty e$B$rDL$7$Fe(B factor  
e$B%3%^%s%I$r;H$&$3$H$r9M$($^$9!#e(B

% ./ruby -rpty -e ’  
m, s = PTY.open  
r, w = IO.pipe  
pid = spawn(“factor”, :in=\>r, :out=\>s)  
r.close  
s.close  
w.puts “42”; p m.gets  
w.puts “133”; p m.gets  
’  
“42: 2 3 7\r\n”  
“133: 7 19\r\n”

42 e$B$He(B 133 e$B$re(B factor  
e$B%3%^%s%I$GAG0x?tJ,2r$G$-$F$@$$$?$$$&$^$/$$$C$F$$$^$9$,!"e(B  
e$B2~9T$,e(B \r\n e$B$H$J$C$F$7$^$&$N$,5$$KF~$j$^$;$s!#e(B

factor e$B%3%^%s%I\<+BN$Oe(B \n e$B$rI8=`=PNO$K=PNO$7$F$\*$j!"e(B  
e$B$=$l$re(B \r\n e$B$K$7$F$$$k$N$Oe(B tty (pty) e$B$G$9!#e(B

e$B$3$3$G!"e(Bpty e$B$8$c$J$/$Fe(B pipe e$B$H$$$&$o$1$K$O$$$-$^$;$s!#e(B  
PTY.open e$B$re(B IO.pipe e$B$KJQ$($FF0$+$;$PJ,$+$j$^$9$,!“e(B  
factor e$B%3%^%s%I$,=PNO$r%P%C%U%!%j%s%0$9$k$?$a!”%O%s%0$7$^$9!#e(B  
(e$B\>/$J$/$H$be(B Debian e$B$Ne(B factor e$B%3%^%s%I$G$Oe(B)

e$B$H$$$&$o$1$G!"$d$C$Q$je(B pty  
e$B$J$N$G!"$=$l$G2~9T$NJQ49$rM^@)$9$k$K$Oe(B  
io/console e$B$N=PHV$H$$$&$3$H$G!"e(BIO#raw e$B$r;H$&$H!"0J2\<$N$h$&$Ke(B  
e$B%(%i!\<$K$J$C$F$7$^$$$^$9!#e(B

% ./ruby -rpty -rio/console -e ’  
m, s = PTY.open  
r, w = IO.pipe  
s.raw {  
pid = spawn(“factor”, :in=\>r, :out=\>s)  
r.close  
s.close  
w.puts “42”; p m.gets  
w.puts “133”; p m.gets  
}  
’  
“42: 2 3 7\n”  
“133: 7 19\n”  
-e:4:in `raw': closed stream (IOError) from -e:4:in`’

s e$B$Oe(B spawn e$BD\>8e$Ke(B close e$B$7$F$"$k$N$G!"e(Btty  
e$B$N\>uBV$r85$KLa$=$&$H$7$Fe(B  
e$B$9$G$Ke(B close e$B$5$l$F$$$k$H$$$&%(%i!\<$K$J$C$F$$$^$9!#e(B

s e$B$re(B close e$B$9$k$3$H$O!"e(Bpipe  
e$B$+$iN`?d$9$k$H$$$1$J$/$O$J$$$h$&$K;W$$$^$9!#e(B

IO#raw e$B$G!"%V%m%C%/Fb$Ge(B close  
e$B$5$l$?$i!"%(%i!\<$K$;$:$KC1$KH4$1$k!"$C$F$$$&$N$Oe(B  
e$B$I$&$G$7$g$&$+e(B?

---

<div class="post-metadata">

**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [May 8, 2010, 1:59pm UTC](https://www.ruby-forum.com/t/io-console-io-raw-error-when-io-is-closed-in-the-block/188253/2 "2010-05-08T13:59:38Z")

</div>

2010e$BG/e(B5e$B7ne(B8e$BF|e(B20:33 Tanaka A. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> io/console e$B$r;H$C$F$\_$?$N$G$9$,!“$A$g$C$H$&$^$/;H$($^$;$s!#e(B  
> IO#raw e$B$,e(B tty e$B$N\>uBV$rI,$:85$K$b$I$9$s$G$9$,!”$=$l$,$A$g$C$H:$$j$^$9!#e(B

> IO#raw e$B$G!“%V%m%C%/Fb$Ge(B close e$B$5$l$?$i!”%(%i!\<$K$;$:$KC1$KH4$1$k!"$C$F$$$&$N$Oe(B  
> e$B$I$&$G$7$g$&$+e(B?

NEWS e$B$Ke(B

```
* IO#raw
* IO#raw {|io| }

```

e$B$H:$C$F$$$k$N$K5$$,$D$$$F$7$^$C$?$N$G$9$,!"e(B  
e$B$b$7$+$7$F!"e(BIO#raw  
e$B$K%V%m%C%/$rM?$($J$$$H%(%i!\<$K$J$k$N$O0U?^$5$l$6$k5sF0e(B  
e$B$J$s$G$7$g$&$+e(B?

% ./ruby -rpty -rio/console -e ’  
m, s = PTY.open  
s.raw  
’  
-e:3:in `raw': no block given (LocalJumpError) from -e:3:in `’

---

<div class="post-metadata">

**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [May 8, 2010, 4:24pm UTC](https://www.ruby-forum.com/t/io-console-io-raw-error-when-io-is-closed-in-the-block/188253/3 "2010-05-08T16:24:45Z")

</div>

2010e$BG/e(B5e$B7ne(B8e$BF|e(B20:59 Tanaka A. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> NEWS e$B$Ke(B
> 
> - IO#raw
> - IO#raw {|io| }
> 
> e$B$H:$C$F$$$k$N$K5$$,$D$$$F$7$^$C$?$N$G$9$,!"e(B  
> e$B$b$7$+$7$F!"e(BIO#raw e$B$K%V%m%C%/$rM?$($J$$$H%(%i!\<$K$J$k$N$O0U?^$5$l$6$k5sF0e(B  
> e$B$J$s$G$7$g$&$+e(B?

e$B%V%m%C%/L5$7$N$,e(B NEWS e$B$+$i\>C$($F!“e(BIO#raw {|io| }  
e$B$OFbIt$Ge(B dup e$B$7$F3N\<B$Ke(B  
e$B\>uBV$rLa$9$h$&$K$J$C$?$h$&$G$9$,!”$3$l$O:$$j$^$9!#e(B

e$BNc$K$"$2$?e(B PTY e$B$NMQK!$@$H!"La$7$?$/$J$$$s$G$9!#e(B

e$B$=$7$F!“?F%W%m%;%9$G$O!“e(BPTY e$B$Ne(B slave tty e$B$re(B open  
e$B$7$F$\*$-$?$/$”$j$^$;$s!#e(B  
e$B$b$7!“e(Bopen e$B$7$?$^$^$@$H!”?F%W%m%;%9$,e(B master tty  
e$B$+$iFI$\_=P$7$Fe(B  
EOF e$B$,8!CN$G$-$J$$$+$i$G$9!#e(B  
(EOF e$B$8$c$J$/$F$J$K$+%(%i!\<$K$J$k$+$b$7$l$^$;$s$,e(B)  
e$B$3$l$,e(B IO#raw e$B$,N”$Ke(B fd  
e$B$r1#$7;}$C$F$$$i$l$k$H!"$&$^$/$$$-$^$;$s!#e(B

e$B$=$s$J$o$1$G!“e(Bslave tty e$B$r?F%W%m%;%9$G$Oe(B close  
e$B$7!”$+$D!“e(B  
e$BC\<Kv$O;R%W%m%;%9$+$i$N$?$a$Ke(B raw e$B$N$^$^$K$9$k!“e(B  
e$B$H$$$&$N$,IT2DG=$J5$$,$9$k$s$G$9$,!”$J$K$+J}K!$O$”$j$^$9$+e(B?

---

<div class="post-metadata">

**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [May 9, 2010, 6:00am UTC](https://www.ruby-forum.com/t/io-console-io-raw-error-when-io-is-closed-in-the-block/188253/4 "2010-05-09T06:00:03Z")

</div>

2010e$BG/e(B5e$B7ne(B8e$BF|e(B23:24 Tanaka A. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> e$B%V%m%C%/L5$7$N$,e(B NEWS e$B$+$i\>C$($F!“e(BIO#raw {|io| } e$B$OFbIt$Ge(B dup e$B$7$F3N\<B$Ke(B  
> e$B\>uBV$rLa$9$h$&$K$J$C$?$h$&$G$9$,!”$3$l$O:$$j$^$9!#e(B
> 
> e$BNc$K$"$2$?e(B PTY e$B$NMQK!$@$H!"La$7$?$/$J$$$s$G$9!#e(B

> e$B$=$s$J$o$1$G!“e(Bslave tty e$B$r?F%W%m%;%9$G$Oe(B close e$B$7!”$+$D!“e(B  
> e$BC\<Kv$O;R%W%m%;%9$+$i$N$?$a$Ke(B raw e$B$N$^$^$K$9$k!“e(B  
> e$B$H$$$&$N$,IT2DG=$J5$$,$9$k$s$G$9$,!”$J$K$+J}K!$O$”$j$^$9$+e(B?

e$B8=\>u$@$H\>e5-$,\<B8=$G$-$J$/$F:$$k$N$G0J2\<$N$h$&$K$7$?$$$s$G$9$,$I$&$G$7$g$&$+!#e(B

e$B$3$&$G$"$l$P!“e(BIO#raw e$B$N%V%m%C%/Fb$Ge(B close e$B$9$k$H!“e(Btty  
e$B$N\>uBV$,La$i$5$J$$$3$H$,e(B  
e$B\<B8=$G$-!”$^$?!“N”$Ge(B fd e$B$,1#$l$FJ]B8$5$l$k$3$H$b$”$j$^$;$s!#e(B

# Index: ext/io/console/console.c

— ext/io/console/console.c (revision 27700)  
+++ ext/io/console/console.c (working copy)  
@@ -173,23 +173,6 @@

#define FD\_PER\_IO 2

-#if defined HAVE\_DUP3  
-#define dup\_private(fd) dup3((fd), -1, O\_CLOEXEC)  
-#elif defined F\_DUPFD\_CLOEXEC  
-#define dup\_private(fd) fcntl((fd), F\_DUPFD\_CLOEXEC)  
-#elif defined O\_CLOEXEC  
-static inline int  
-dup\_private(int fd)  
-{

- fd = dup(fd);
- if (fd != -1) fcntl(fd, F\_SETFD, O\_CLOEXEC);
- return fd;  
-}  
-#define dup\_private(fd) dup\_private(fd)  
-#else  
-#define dup\_private(fd) dup(fd)  
-#endif
- 

static VALUE  
ttymode(VALUE io, VALUE (\*func)(VALUE), void (\*setter)(conmode \*))  
{  
@@ -197,7 +180,6 @@  
int status = -1;  
int error = 0;  
int fd[FD\_PER\_IO];

- int tmpfd, dupped = 0;  
conmode t[FD\_PER\_IO];  
VALUE result = Qnil;

@@ -205,10 +187,6 @@  
fd[0] = GetReadFD(fptr);  
if (fd[0] != -1) {  
if (set\_ttymode(fd[0], t+0, setter)) {

- 

```
 if ((tmpfd = dup_private(fd[0])) != -1) {

```

- fd[0] = tmpfd;
- dupped |= 1 \<\< 0;
- 

```
 }
 status = 0;

```

}  
else {  
@@ -219,10 +197,6 @@  
fd[1] = GetWriteFD(fptr);  
if (fd[1] != -1 && fd[1] != fd[0]) {  
if (set\_ttymode(fd[1], t+1, setter)) {
- 

```
 if ((tmpfd = dup_private(fd[1])) != -1) {

```

- fd[1] = tmpfd;
- dupped |= 1 \<\< 1;
- 

```
 }
 status = 0;

```

}  
else {  
@@ -233,19 +207,20 @@  
if (status == 0) {  
result = rb\_protect(func, io, &status);  
}
- if (fd[0] != -1) {
- if (!setattr(fd[0], t+0)) {
- 

```
 error = errno;

```

- 

```
 status = -1;

```

- }
- if (dupped & (1 \<\< 0)) close(fd[0]);
- }
- if (fd[1] != -1 && fd[1] != fd[0]) {
- if (!setattr(fd[1], t+1)) {
- 

```
 error = errno;

```

- 

```
 status = -1;

```

- }
- if (dupped & (1 \<\< 1)) close(fd[1]);

- if (0 \<= RFILE(io)-\>fptr-\>fd) {
- 

```
   GetOpenFile(io, fptr);

```

- 

```
   if (fd[0] != -1 && fd[0] == GetReadFD(fptr)) {

```

- 

```
       if (!setattr(fd[0], t+0)) {

```

- 

```
           error = errno;

```

- 

```
           status = -1;

```

- 

```
       }

```

- 

```
   }

```

- 

```
   if (fd[1] != -1 && fd[1] != fd[0] && fd[1] == GetWriteFD(fptr)) 

```

{

- 

```
       if (!setattr(fd[1], t+1)) {

```

- 

```
           error = errno;

```

- 

```
           status = -1;

```

- 

```
       }

```

- 

```
   }

```

}  
if (status) {  
if (status == -1) {  
Index: ext/io/console/extconf.rb  
===================================================================  
— ext/io/console/extconf.rb (revision 27700)  
+++ ext/io/console/extconf.rb (working copy)  
@@ -14,7 +14,6 @@  
end  
have\_header(“sys/ioctl.h”)  
have\_func(“rb\_io\_get\_write\_io”, “ruby/io.h”)  
-have\_func(“dup3”, “unistd.h”)  
if ok  
create\_makefile(“io/console”)  
end