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Date: Tue, 27 Aug 2002 18:00:15 -0700 (PDT)
Message-Id: <200208280100.g7S10Fmv032732@freefall.freebsd.org>
To: freebsd-bugs@FreeBSD.org
Cc: 
From: Archie Cobbs <archie@packetdesign.com>
Subject: Re: bin/42100: libc_r: accept(2) can't handle descriptor being 
 closed/shutdown
Reply-To: Archie Cobbs <archie@packetdesign.com>
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The following reply was made to PR bin/42100; it has been noted by GNATS.

From: Archie Cobbs <archie@packetdesign.com>
To: freebsd-gnats-submit@FreeBSD.org
Cc:  
Subject: Re: bin/42100: libc_r: accept(2) can't handle descriptor being 
 closed/shutdown
Date: Tue, 27 Aug 2002 17:51:37 -0700

 Hmm.. guess I forgot to include the test program! Here it is.
 
 ============================== CUT HERE ========================
 
 /* Set to "1" to abort on signal, or "0" for thread-based delayed abort */
 #ifndef SIGNAL_TEST
 #define SIGNAL_TEST     1
 #endif
 
 #ifdef __linux__
 #define _XOPEN_SOURCE   600
 #define _GNU_SOURCE     1
 #define _BSD_SOURCE     1
 #define _ISOC99_SOURCE  1
 #endif
 
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netinet/tcp.h>
 
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <signal.h>
 #include <errno.h>
 #include <unistd.h>
 #include <time.h>
 #include <err.h>
 
 #if SIGNAL_TEST
 static void     signal_handler(int sig);
 #else
 #include <pthread.h>
 static void     *thread_entry(void *arg);
 static pthread_t tid;
 #endif
 
 static int      sock;
 
 int
 main(int ac, char **av)
 {
         struct sockaddr_in sin;
         socklen_t slen;
 
         /* Create socket */
         if ((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
                 err(1, "socket");
         memset(&sin, 0, sizeof(sin));
 #ifndef __linux__
         sin.sin_len = sizeof(sin);
 #endif
         sin.sin_family = AF_INET;
         if (bind(sock, (struct sockaddr *)&sin, sizeof(sin)) == -1)
                 err(1, "socket");
         slen = sizeof(sin);
         if (listen(sock, 10) == -1)
                 err(1, "listen");
 
 #if SIGNAL_TEST
         /* Register signal handler */
         signal(SIGINT, signal_handler);
         signal(SIGTERM, signal_handler);
 #else
         /* Spawn thread */
         if ((errno = pthread_create(&tid, NULL, thread_entry, NULL)) != 0)
                 err(1, "pthread_create");
 #endif
 
         /* Listen for connections on socket */
         printf("main: waiting for connection...\n");
         if (accept(sock, (struct sockaddr *)&sin, &slen) == -1)
                 err(1, "main: accept");
         printf("main: got connection?\n");
         return (0);
 }
 
 #if SIGNAL_TEST
 static void
 signal_handler(int sig)
 #else
 static void *
 thread_entry(void *arg)
 #endif
 {
 #if SIGNAL_TEST
         printf("%s: rec'd signal %d...\n", __FUNCTION__, sig);
 #else
         printf("%s: sleeping 2 seconds...\n", __FUNCTION__);
         sleep(2);
 #endif
         srandom(getpid() ^ time(NULL));
         if ((random() & 0x00400000) != 0) {
                 printf("%s: shutdown()'ing socket...\n", __FUNCTION__);
                 if (shutdown(sock, SHUT_RDWR) == -1)
                         err(1, "thread: shutdown");
         } else {
                 printf("%s: close()'ing socket...\n", __FUNCTION__);
                 if (close(sock) == -1)
                         err(1, "thread: shutdown");
         }
 #if !SIGNAL_TEST
         return (NULL);
 #endif
 }

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