This is the mail archive of the
cygwin@sourceware.cygnus.com
mailing list for the Cygwin project.
Re: gethostby... broken when forked
- To: Jeff Smart <jeff at dtv dot net>
- Subject: Re: gethostby... broken when forked
- From: Andrew Lipnitsky <ert at cit dot org dot by>
- Date: Thu, 04 Dec 1997 18:18:45 +0200
- CC: gnu-win32 at cygnus dot com
- References: <34862B09.3FFE@dtv.net>
Hi Jeff!!!
Your program work fine for me [WinNT4.0 SP3 + gnuwin b18]
but it does nothing because the parent
process exit before child can do something.
The following source determines host properly (at leas for me).
#include <stdio.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
int main(argc, argv)
int argc;
char *argv[];
{
struct hostent *hostptr; /* Internet host struct from netdb.h */
char hostname[256];
int childpid;
strcpy(hostname, argv[1]);
printf("PARENT STARTED PID=%d\n", getpid());
if ((childpid = fork()) < 0) {
printf("fork failed\n");
exit(0);
} else if (childpid == 0) { /* start child process */
printf("CHILD STARTED PID=%d\n", getpid());
hostptr = gethostbyname(hostname); /* BOMBS HERE */
printf("hostptr = %p\n hostname=%s\n", hostptr,hostptr->h_name);
exit(0);
} else sleep(100); // !!! parent process wait for child
}
-
For help on using this list (especially unsubscribing), send a message to
"gnu-win32-request@cygnus.com" with one line of text: "help".