int
accept(int fd, struct sockaddr *addr, socklen_t *addrlen)
{
pthread_t self = pthread_self();
int rv;
_enter_cancel(self);
rv = _thread_sys_accept(fd, addr, addrlen);
_leave_cancel(self);
return (rv);
}
int
accept(int fd, struct sockaddr * name, socklen_t *namelen)
{
struct pthread *curthread = _get_curthread();
int ret;
int newfd;
enum fd_entry_mode init_mode;
/* This is a cancellation point: */
_thread_enter_cancellation_point();
/* Lock the file descriptor: */
if ((ret = _FD_LOCK(fd, FD_RDWR, NULL)) == 0) {
/* Enter a loop to wait for a connection request: */
while ((ret = _thread_sys_accept(fd, name, namelen)) < 0) {
/* Check if the socket is to block: */
if ((_thread_fd_table[fd]->status_flags->flags & O_NONBLOCK) == 0 &&
(errno == EWOULDBLOCK || errno == EAGAIN)) {
/* Save the socket file descriptor: */
curthread->data.fd.fd = fd;
curthread->data.fd.fname = __FILE__;
curthread->data.fd.branch = __LINE__;
/* Set the timeout: */
_thread_kern_set_timeout(NULL);
curthread->interrupted = 0;
curthread->closing_fd = 0;
/* Schedule the next thread: */
_thread_kern_sched_state(PS_FDR_WAIT, __FILE__,
__LINE__);
/* Check if the wait was interrupted: */
if (curthread->interrupted) {
/* Return an error status: */
errno = EINTR;
ret = -1;
break;
} else if (curthread->closing_fd) {
/* Return an error status: */
errno = EBADF;
ret = -1;
break;
}
} else {
/*
* Another error has occurred, so exit the
* loop here:
*/
break;
}
}
/*
* If no errors initialize the file descriptor table
* for the new socket. If the client's view of the
* status_flags for fd is blocking, then force newfd
* to be viewed as blocking too.
*/
if (ret != -1) {
newfd = ret;
if ((_thread_fd_table[fd]->status_flags->flags & O_NONBLOCK) == 0)
init_mode = FD_INIT_BLOCKING;
else
init_mode = FD_INIT_NEW;
if((ret = _thread_fd_table_init(newfd, init_mode, NULL)) != -1)
ret = newfd;
else {
/* quitely close the fd */
_thread_sys_close(ret);
}
}
/* Unlock the file descriptor: */
_FD_UNLOCK(fd, FD_RDWR);
}
/* No longer in a cancellation point: */
_thread_leave_cancellation_point();
/* Return the socket file descriptor or -1 on error: */
return (ret);
}
