Date: Thu, 8 Sep 2005 23:02:03 +0300 From: victor cruceru <victor.cruceru@gmail.com> To: erkan kolemen <erkankolemen@yahoo.com> Cc: freebsd-hackers@freebsd.org Subject: Re: fok() execve() -> No child processes Message-ID: <494025505090813027dc0d6d3@mail.gmail.com> In-Reply-To: <20050908194020.21635.qmail@web33415.mail.mud.yahoo.com> References: <20050908194020.21635.qmail@web33415.mail.mud.yahoo.com>
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Try to replace vfrork with fork and check if you'll get the same behavior.
victor cruceru
On 9/8/05, erkan kolemen <erkankolemen@yahoo.com> wrote:
> Following code fails. I debugged it and saw that: it
> produces "No child processes" error while wait().
>
> is it possible, parent still is not start to wait but
> child finished. After that CPU schedules parents. It
> try to start wait but child has finished.
>
> is it possible... What can i do for that?
>
> static int e_x_e_c(char *cmd[])
> {
> pid_t pid;
> int stat;
>
> switch((pid = vfork())) {
> case -1:
> syslog(LOG_ERR, "fork: %s",
> strerror(errno));
> return -16;
> break;
> case 0:
> if(execve(cmd[0], cmd, NULL)
> == -1) {
> syslog(LOG_ERR,
> "execve: %s", strerror(errno));
> return -15;
> }
> break;
> default:
> if (wait(&stat) == -1) {
> slog(1, LOG_ERR);
> return -14;
> }
>
> if (WIFSIGNALED(stat)) {
> syslog(LOG_NOTICE, "%s
> is signalled", cmdline[0]);
> return -13;
> }
>
> if (WIFSTOPPED(stat)) {
> syslog(LOG_NOTICE, "%s
> is stopped", cmdline[0]);
> return -12;
> }
>
> if (WIFEXITED(stat))
> return
> WEXITSTATUS(stat);
> break;
> }
> return -11;
> }
>
>
>
>
>
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