From:	sos AT prospect DOT com DOT ru (Sergey Okhapkin)
Subject:	RE: popen() in cygwin.dll
24 Jan 1997 06:56:36 -0800 :
Approved:	cygnus DOT gnu-win32 AT cygnus DOT com
Distribution:	cygnus
Message-ID:	<01BC09CA.B4257A10.cygnus.gnu-win32@sos>
Original-To:	"'Corinna Kinchin'" <crin AT datazone DOT com>,
	"'Geoffrey Noer'"
	<noer AT cygnus DOT com>
Original-Cc:	"'gnu-win32 AT cygnus DOT com'" <gnu-win32 AT cygnus DOT com>
Encoding:	77 TEXT
Original-Sender:	owner-gnu-win32 AT cygnus DOT com

Geoffrey Noer wrote:

> > I'm finding that the popen() function call always returns NULL. 
> > Has anyone else encountered this? Is it a known "feature"? 
> 
> If this is happening, it's definitely a bug.  Unless someone out
> on the net solves the problem and gets me a patch to the appropriate
> cygwin32 code in src/winsup this may not get looked into soon due to
> extreme time constraints.

I don't see any problems:

7:/usr/src$ cat tst.c
#include <stdio.h>
main()
{
        FILE *f;
        if((f=popen("ls","r")) == NULL) {
                perror("Popen");
                exit(1);
        }
        while(!feof(f))
                putchar(getc(f));
}
8:/usr/src$ gcc -o tst tst.c
9:/usr/src$ tst
CLS.CC
Mail/
SYSTEM.C
TSOCK.C
a.out
apimon.log
apitrace.log
cygnus/
file-3.20.1/
finddupe/
inetd/
inetutils-1.2/
iostone
iostone.c
joe/
less-321/
lynx2-5/
man/
man-1.4d/
mc-3.2.1/
ncurses-1.9.9e/
net/
ntxlib/
rcs-5.7/
rman-2.1/
rxvt-2.18/
slirp-0.9m/
sockets/
t.c
t.sh
tclhttpd-1.0.1/
telnetd
telnetd.c
termcap-1.3/
tkman-1.5/
tkman-1.8b4/
tkman-2.0a3/
tst.c
tst.exe
unarj/
unzip/
uudecode.c
uuencode.c
vt/
xc/
 10:/usr/src$

---
Sergey Okhapkin
Moscow, Russia
Looking for a job

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