Threading bug in sunrpc/auth_none.c
Zack Weinberg
zack@codesourcery.com
Fri Apr 12 12:26:00 GMT 2002
On Thu, Apr 11, 2002 at 03:36:47PM -0700, Ulrich Drepper wrote:
> I'm not going to change anything until I see some code (means a test
> program).
Fair enough; program is appended.
$ gcc -pthread rpcthreadbug.c -o rpcthreadbug
$ ./rpcthreadbug # buggy libc
test_one_call: success
test_one_call: RPC: Can't encode arguments
$ LD_LIBRARY_PATH=~/src/libc/build ./rpcthreadbug # fixed libc
test_one_call: success
test_one_call: success
zw
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <rpc/rpc.h>
#include <arpa/inet.h>
#define PROGNUM 1234
#define VERSNUM 1
#define PROCNUM 1
void
dispatch(struct svc_req *request, SVCXPRT *xprt)
{
svc_sendreply(xprt, (xdrproc_t)xdr_void, 0);
}
void
test_one_call(CLIENT *c)
{
struct timeval tout = { 60, 0 };
enum clnt_stat result;
fprintf(stderr, "test_one_call: ");
result = clnt_call(c, PROCNUM,
(xdrproc_t)xdr_void, 0,
(xdrproc_t)xdr_void, 0, tout);
if(result == RPC_SUCCESS)
fprintf(stderr, "success\n");
else
{
clnt_perrno(result);
putc('\n', stderr);
}
}
void *
thread_wrapper(void *arg)
{
test_one_call((CLIENT *)arg);
return 0;
}
int
main(void)
{
pthread_t tid;
pid_t pid;
int err;
SVCXPRT *svx;
CLIENT *clnt;
struct sockaddr_in sin;
struct timeval wait = { 5, 0 };
int sock = RPC_ANYSOCK;
svx = svcudp_create(RPC_ANYSOCK);
svc_register(svx, PROGNUM, VERSNUM, dispatch, 0);
pid = fork();
if(pid == -1)
{
perror("fork");
return 1;
}
if (pid == 0)
svc_run();
inet_aton("127.0.0.1", &sin.sin_addr);
sin.sin_port = htons(svx->xp_port);
sin.sin_family = AF_INET;
clnt = clntudp_create(&sin, PROGNUM, VERSNUM, wait, &sock);
/* Test in this thread */
test_one_call(clnt);
/* Test in a child thread */
err = pthread_create(&tid, 0, thread_wrapper, (void *)clnt);
if(err)
fprintf(stderr, "pthread_create: %s\n", strerror(err));
err = pthread_join(tid, 0);
if(err)
fprintf(stderr, "pthread_join: %s\n", strerror(err));
return 0;
}
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