From owner-freebsd-current Wed Oct 7 22:25:54 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id WAA21729 for freebsd-current-outgoing; Wed, 7 Oct 1998 22:25:54 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from dingo.cdrom.com (castles134.castles.com [208.214.165.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id WAA21720 for ; Wed, 7 Oct 1998 22:25:45 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (localhost [127.0.0.1]) by dingo.cdrom.com (8.9.1/8.8.8) with ESMTP id WAA01135; Wed, 7 Oct 1998 22:30:48 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Message-Id: <199810080530.WAA01135@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Darren Whittaker cc: freebsd-current@FreeBSD.ORG Subject: Re: problem in 3.0 In-reply-to: Your message of "Wed, 07 Oct 1998 16:03:13 MDT." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 07 Oct 1998 22:30:47 -0700 From: Mike Smith Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > We have found a problem with popen. The first popen is executed just fine > with a good pclose. The second popen appears to work (though nothing > happens) and the pclose returns a 138. This also applies to the system > call. The first one works but any after sustem call after the first > one fails. We even forked the process but in the child only the first > popen work. I'm not sure that I can follow your problem here. Have you reduced the program to its simplest form, eg: dingo:/tmp>cat p.c #include #include void main(void) { int i, j; char buf[256]; FILE *p; for (i = 0; i < 10; i++) { if ((p = popen("/bin/date", "r")) == NULL) err(1, "popen"); fgets(buf, sizeof(buf) - 1, p); printf(buf); if ((j = pclose(p)) != 0) errx(1, "pclose %d", j); } } dingo:/tmp>gcc -o p p.c dingo:/tmp>./p Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 Wed Oct 7 22:28:04 PDT 1998 dingo:/tmp>uname -a FreeBSD dingo.cdrom.com 3.0-CURRENT FreeBSD 3.0-CURRENT #2: Wed Sep 16 16:38:28 PDT 1998 mike@dingo.cdrom.com:/local0/src/sys/compile/DINGO i386 What do you mean by "this also applies to the system call"? Which system call? > Now our program is running as a cgi under Apache and works on your 2.x > versions just fine. I'm afraid you're going to have to supply some more detail before we can help you further here. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message