* fhandler.h (fhandler_socket::read): Remove method.
(fhandler_socket::write): Ditto. (fhandler_socket::readv): New method. (fhandler_socket::writev): Ditto. (fhandler_socket::recvmsg): Add new optional argument. (fhandler_socket::sendmsg): Ditto. * fhandler.cc (fhandler_socket::read): Remove method. (fhandler_socket::write): Ditto. (fhandler_socket::readv): New method. (fhandler_socket::writev): Ditto. (fhandler_socket::recvmsg): Use win32's scatter/gather IO where possible. (fhandler_socket::sendmsg): Ditto. * net.cc (cygwin_recvmsg): Check the msghdr's iovec fields. (cygwin_sendmsg): Ditto. Add omitted sigframe.
This commit is contained in:
Corinna Vinschen
parent
3573883f9d
commit
4d147a03bd
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@ -1,3 +1,21 @@
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2002-09-03 Conrad Scott <conrad.scott@dsl.pipex.com>
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* fhandler.h (fhandler_socket::read): Remove method.
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(fhandler_socket::write): Ditto.
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(fhandler_socket::readv): New method.
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(fhandler_socket::writev): Ditto.
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(fhandler_socket::recvmsg): Add new optional argument.
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(fhandler_socket::sendmsg): Ditto.
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* fhandler.cc (fhandler_socket::read): Remove method.
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(fhandler_socket::write): Ditto.
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(fhandler_socket::readv): New method.
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(fhandler_socket::writev): Ditto.
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(fhandler_socket::recvmsg): Use win32's scatter/gather IO where
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possible.
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(fhandler_socket::sendmsg): Ditto.
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* net.cc (cygwin_recvmsg): Check the msghdr's iovec fields.
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(cygwin_sendmsg): Ditto. Add omitted sigframe.
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2002-09-02 Kazuhiro Fujieda <fujieda@jaist.ac.jp>
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* cygwin.din: Revert exporting new wchar functions.
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@ -400,15 +400,15 @@ class fhandler_socket: public fhandler_base
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int getsockname (struct sockaddr *name, int *namelen);
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int getpeername (struct sockaddr *name, int *namelen);
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int __stdcall read (void *ptr, size_t len) __attribute__ ((regparm (3)));
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ssize_t readv (const struct iovec *, int iovcnt, ssize_t tot = -1);
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int recvfrom (void *ptr, size_t len, int flags,
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struct sockaddr *from, int *fromlen);
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int recvmsg (struct msghdr *msg, int flags);
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int recvmsg (struct msghdr *msg, int flags, ssize_t tot = -1);
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int write (const void *ptr, size_t len);
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ssize_t writev (const struct iovec *, int iovcnt, ssize_t tot = -1);
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int sendto (const void *ptr, size_t len, int flags,
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const struct sockaddr *to, int tolen);
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int sendmsg (const struct msghdr *msg, int flags);
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int sendmsg (const struct msghdr *msg, int flags, ssize_t tot = -1);
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int ioctl (unsigned int cmd, void *);
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int fcntl (int cmd, void *);
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@ -660,60 +660,69 @@ fhandler_socket::getpeername (struct sockaddr *name, int *namelen)
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return res;
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}
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int __stdcall
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fhandler_socket::read (void *ptr, size_t len)
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int
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fhandler_socket::readv (const struct iovec *const iov, const int iovcnt,
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ssize_t tot)
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{
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return recvfrom (ptr, len, 0, NULL, NULL);
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struct msghdr msg =
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{
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msg_name: NULL,
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msg_namelen: 0,
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msg_iov: (struct iovec *) iov, // const_cast
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msg_iovlen: iovcnt,
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msg_accrights: NULL,
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msg_accrightslen: 0
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};
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return recvmsg (&msg, 0, tot);
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}
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int
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fhandler_socket::recvfrom (void *ptr, size_t len, int flags,
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struct sockaddr *from, int *fromlen)
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{
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int res = -1;
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wsock_event wsock_evt;
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LPWSAOVERLAPPED ovr;
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int res;
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DWORD ret;
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flags &= MSG_WINMASK;
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if (is_nonblocking () || !(ovr = wsock_evt.prepare ()))
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{
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debug_printf ("Fallback to winsock 1 recvfrom call");
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if ((res = ::recvfrom (get_socket (), (char *) ptr, len, flags, from,
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fromlen))
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== SOCKET_ERROR)
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{
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set_winsock_errno ();
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res = -1;
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}
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}
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if (!winsock2_active)
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ret = res = ::recvfrom (get_socket (),
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(char *) ptr, len, flags,
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from, fromlen);
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else
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{
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WSABUF wsabuf = { len, (char *) ptr };
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DWORD ret = 0;
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if (WSARecvFrom (get_socket (), &wsabuf, 1, &ret, (DWORD *)&flags,
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from, fromlen, ovr, NULL) != SOCKET_ERROR)
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res = ret;
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else if ((res = WSAGetLastError ()) != WSA_IO_PENDING)
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if (is_nonblocking ())
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res = WSARecvFrom (get_socket (), &wsabuf, 1, &ret, (DWORD *) &flags,
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from, fromlen,
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NULL, NULL);
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else
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{
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set_winsock_errno ();
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res = -1;
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wsock_event wsock_evt;
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res = WSARecvFrom (get_socket (), &wsabuf, 1, &ret, (DWORD *) &flags,
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from, fromlen,
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wsock_evt.prepare (), NULL);
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if (res == SOCKET_ERROR && WSAGetLastError () == WSA_IO_PENDING)
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ret = res = wsock_evt.wait (get_socket (), (DWORD *) &flags);
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}
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else if ((res = wsock_evt.wait (get_socket (), (DWORD *)&flags)) == -1)
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set_winsock_errno ();
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}
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if (res == SOCKET_ERROR)
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{
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res = -1;
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set_winsock_errno ();
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}
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else
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res = ret;
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return res;
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}
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int
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fhandler_socket::recvmsg (struct msghdr *msg, int flags)
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fhandler_socket::recvmsg (struct msghdr *msg, int flags, ssize_t tot)
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{
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int res = -1;
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int nb;
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size_t tot = 0;
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char *buf, *p;
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struct iovec *iov = msg->msg_iov;
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if (get_addr_family () == AF_LOCAL)
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{
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/* On AF_LOCAL sockets the (fixed-size) name of the shared memory
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@ -723,120 +732,294 @@ fhandler_socket::recvmsg (struct msghdr *msg, int flags)
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special handling for descriptor passing. */
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/*TODO*/
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}
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for (int i = 0; i < msg->msg_iovlen; ++i)
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tot += iov[i].iov_len;
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buf = (char *) alloca (tot);
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if (tot != 0 && buf == NULL)
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struct iovec *const iov = msg->msg_iov;
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const int iovcnt = msg->msg_iovlen;
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int res;
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if (!winsock2_active)
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{
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set_errno (ENOMEM);
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return -1;
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if (iovcnt == 1)
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res = recvfrom (iov->iov_base, iov->iov_len, flags,
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(struct sockaddr *) msg->msg_name,
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&msg->msg_namelen);
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else
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{
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if (tot == -1) // i.e. if not pre-calculated by the caller.
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{
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tot = 0;
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const struct iovec *iovptr = iov + iovcnt;
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do
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{
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iovptr -= 1;
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tot += iovptr->iov_len;
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}
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while (iovptr != iov);
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}
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char *buf = (char *) alloca (tot);
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if (!buf)
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{
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set_errno (ENOMEM);
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res = -1;
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}
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else
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{
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res = recvfrom (buf, tot, flags,
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(struct sockaddr *) msg->msg_name,
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&msg->msg_namelen);
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const struct iovec *iovptr = iov;
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int nbytes = res;
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while (nbytes > 0)
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{
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const int frag = min (nbytes, (ssize_t) iovptr->iov_len);
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memcpy (iovptr->iov_base, buf, frag);
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buf += frag;
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iovptr += 1;
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nbytes -= frag;
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}
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}
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}
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}
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nb = res = recvfrom (buf, tot, flags, (struct sockaddr *) msg->msg_name,
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(int *) &msg->msg_namelen);
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p = buf;
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while (nb > 0)
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else
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{
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ssize_t cnt = iov->iov_len;
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if (nb < cnt)
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cnt = nb;
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memcpy (iov->iov_base, p, cnt);
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p += cnt;
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nb -= cnt;
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++iov;
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WSABUF wsabuf[iovcnt];
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{
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const struct iovec *iovptr = iov + iovcnt;
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WSABUF *wsaptr = wsabuf + iovcnt;
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do
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{
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iovptr -= 1;
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wsaptr -= 1;
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wsaptr->len = iovptr->iov_len;
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wsaptr->buf = (char *) iovptr->iov_base;
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}
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while (wsaptr != wsabuf);
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}
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DWORD ret;
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if (is_nonblocking ())
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res = WSARecvFrom (get_socket (),
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wsabuf, iovcnt, &ret, (DWORD *) &flags,
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(struct sockaddr *) msg->msg_name,
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&msg->msg_namelen,
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NULL, NULL);
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else
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{
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wsock_event wsock_evt;
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res = WSARecvFrom (get_socket (),
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wsabuf, iovcnt, &ret, (DWORD *) &flags,
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(struct sockaddr *) msg->msg_name,
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&msg->msg_namelen,
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wsock_evt.prepare (), NULL);
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if (res == SOCKET_ERROR && WSAGetLastError () == WSA_IO_PENDING)
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ret = res = wsock_evt.wait (get_socket (), (DWORD *) &flags);
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}
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if (res == SOCKET_ERROR)
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{
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res = -1;
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set_winsock_errno ();
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}
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else
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res = ret;
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}
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return res;
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}
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int
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fhandler_socket::write (const void *ptr, size_t len)
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fhandler_socket::writev (const struct iovec *const iov, const int iovcnt,
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ssize_t tot)
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{
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return sendto (ptr, len, 0, NULL, 0);
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struct msghdr msg =
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{
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msg_name: NULL,
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msg_namelen: 0,
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msg_iov: (struct iovec *) iov, // const_cast
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msg_iovlen: iovcnt,
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msg_accrights: NULL,
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msg_accrightslen: 0
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};
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return sendmsg (&msg, 0, tot);
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}
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int
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fhandler_socket::sendto (const void *ptr, size_t len, int flags,
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const struct sockaddr *to, int tolen)
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{
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int res = -1;
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wsock_event wsock_evt;
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LPWSAOVERLAPPED ovr;
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sockaddr_in sin;
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if (to && !get_inet_addr (to, tolen, &sin, &tolen))
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return -1;
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if (is_nonblocking () || !(ovr = wsock_evt.prepare ()))
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{
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debug_printf ("Fallback to winsock 1 sendto call");
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if ((res = ::sendto (get_socket (), (const char *) ptr, len,
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flags & MSG_WINMASK,
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(to ? (sockaddr *) &sin : NULL),
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tolen)) == SOCKET_ERROR)
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{
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set_winsock_errno ();
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res = -1;
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}
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}
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int res;
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DWORD ret;
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if (!winsock2_active)
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res = ::sendto (get_socket (), (const char *) ptr, len,
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flags & MSG_WINMASK,
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(to ? (const struct sockaddr *) &sin : NULL), tolen);
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else
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{
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WSABUF wsabuf = { len, (char *) ptr };
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DWORD ret = 0;
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if (WSASendTo (get_socket (), &wsabuf, 1, &ret,
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(DWORD)(flags & MSG_WINMASK),
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(to ? (sockaddr *) &sin : NULL),
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tolen,
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ovr, NULL) != SOCKET_ERROR)
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res = ret;
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else if ((res = WSAGetLastError ()) != WSA_IO_PENDING)
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|
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if (is_nonblocking ())
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res = WSASendTo (get_socket (), &wsabuf, 1, &ret,
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flags & MSG_WINMASK,
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(to ? (const struct sockaddr *) &sin : NULL), tolen,
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NULL, NULL);
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||||
else
|
||||
{
|
||||
set_winsock_errno ();
|
||||
res = -1;
|
||||
wsock_event wsock_evt;
|
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res = WSASendTo (get_socket (), &wsabuf, 1, &ret,
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flags & MSG_WINMASK,
|
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(to ? (const struct sockaddr *) &sin : NULL), tolen,
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wsock_evt.prepare (), NULL);
|
||||
|
||||
if (res == SOCKET_ERROR && WSAGetLastError () == WSA_IO_PENDING)
|
||||
ret = res = wsock_evt.wait (get_socket (), (DWORD *) &flags);
|
||||
}
|
||||
else if ((res = wsock_evt.wait (get_socket (), (DWORD *)&flags)) == -1)
|
||||
set_winsock_errno ();
|
||||
}
|
||||
|
||||
if (res == SOCKET_ERROR)
|
||||
{
|
||||
res = -1;
|
||||
set_winsock_errno ();
|
||||
}
|
||||
else
|
||||
res = ret;
|
||||
|
||||
/* Special handling for SIGPIPE */
|
||||
if (get_errno () == ESHUTDOWN)
|
||||
if (res == -1 && get_errno () == ESHUTDOWN)
|
||||
{
|
||||
set_errno (EPIPE);
|
||||
if (! (flags & MSG_NOSIGNAL))
|
||||
_raise (SIGPIPE);
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
int
|
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fhandler_socket::sendmsg (const struct msghdr *msg, int flags)
|
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fhandler_socket::sendmsg (const struct msghdr *msg, int flags, ssize_t tot)
|
||||
{
|
||||
size_t tot = 0;
|
||||
char *buf, *p;
|
||||
struct iovec *iov = msg->msg_iov;
|
||||
|
||||
if (get_addr_family () == AF_LOCAL)
|
||||
{
|
||||
/* For AF_LOCAL/AF_UNIX sockets, if descriptors are given, start
|
||||
the special handling for descriptor passing. Otherwise just
|
||||
transmit an empty string to tell the receiver that no
|
||||
descriptor passing is done. */
|
||||
if (get_addr_family () == AF_LOCAL)
|
||||
{
|
||||
/* For AF_LOCAL/AF_UNIX sockets, if descriptors are given, start
|
||||
the special handling for descriptor passing. Otherwise just
|
||||
transmit an empty string to tell the receiver that no
|
||||
descriptor passing is done. */
|
||||
/*TODO*/
|
||||
}
|
||||
for(int i = 0; i < msg->msg_iovlen; ++i)
|
||||
tot += iov[i].iov_len;
|
||||
buf = (char *) alloca (tot);
|
||||
if (tot != 0 && buf == NULL)
|
||||
}
|
||||
|
||||
struct iovec *const iov = msg->msg_iov;
|
||||
const int iovcnt = msg->msg_iovlen;
|
||||
|
||||
int res;
|
||||
|
||||
if (!winsock2_active)
|
||||
{
|
||||
if (iovcnt == 1)
|
||||
res = sendto (iov->iov_base, iov->iov_len, flags,
|
||||
(struct sockaddr *) msg->msg_name,
|
||||
msg->msg_namelen);
|
||||
else
|
||||
{
|
||||
if (tot == -1) // i.e. if not pre-calculated by the caller.
|
||||
{
|
||||
tot = 0;
|
||||
const struct iovec *iovptr = iov + iovcnt;
|
||||
do
|
||||
{
|
||||
iovptr -= 1;
|
||||
tot += iovptr->iov_len;
|
||||
}
|
||||
while (iovptr != iov);
|
||||
}
|
||||
|
||||
char *const buf = (char *) alloca (tot);
|
||||
|
||||
if (!buf)
|
||||
{
|
||||
set_errno (ENOMEM);
|
||||
res = -1;
|
||||
}
|
||||
else
|
||||
{
|
||||
char *bufptr = buf;
|
||||
const struct iovec *iovptr = iov;
|
||||
int nbytes = tot;
|
||||
|
||||
while (nbytes != 0)
|
||||
{
|
||||
const int frag = min (nbytes, (ssize_t) iovptr->iov_len);
|
||||
memcpy (bufptr, iovptr->iov_base, frag);
|
||||
bufptr += frag;
|
||||
iovptr += 1;
|
||||
nbytes -= frag;
|
||||
}
|
||||
|
||||
res = sendto (buf, tot, flags,
|
||||
(struct sockaddr *) msg->msg_name,
|
||||
msg->msg_namelen);
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
WSABUF wsabuf[iovcnt];
|
||||
|
||||
{
|
||||
set_errno (ENOMEM);
|
||||
return -1;
|
||||
const struct iovec *iovptr = iov + iovcnt;
|
||||
WSABUF *wsaptr = wsabuf + iovcnt;
|
||||
do
|
||||
{
|
||||
iovptr -= 1;
|
||||
wsaptr -= 1;
|
||||
wsaptr->len = iovptr->iov_len;
|
||||
wsaptr->buf = (char *) iovptr->iov_base;
|
||||
}
|
||||
while (wsaptr != wsabuf);
|
||||
}
|
||||
p = buf;
|
||||
for (int i = 0; i < msg->msg_iovlen; ++i)
|
||||
{
|
||||
memcpy (p, iov[i].iov_base, iov[i].iov_len);
|
||||
p += iov[i].iov_len;
|
||||
}
|
||||
return sendto (buf, tot, flags, (struct sockaddr *) msg->msg_name,
|
||||
msg->msg_namelen);
|
||||
|
||||
DWORD ret;
|
||||
|
||||
if (is_nonblocking ())
|
||||
res = WSASendTo (get_socket (), wsabuf, iovcnt, &ret, flags,
|
||||
(struct sockaddr *) msg->msg_name,
|
||||
msg->msg_namelen,
|
||||
NULL, NULL);
|
||||
else
|
||||
{
|
||||
wsock_event wsock_evt;
|
||||
res = WSASendTo (get_socket (), wsabuf, iovcnt, &ret, flags,
|
||||
(struct sockaddr *) msg->msg_name,
|
||||
msg->msg_namelen,
|
||||
wsock_evt.prepare (), NULL);
|
||||
|
||||
if (res == SOCKET_ERROR && WSAGetLastError () == WSA_IO_PENDING)
|
||||
ret = res = wsock_evt.wait (get_socket (), (DWORD *) &flags);
|
||||
}
|
||||
|
||||
if (res == SOCKET_ERROR)
|
||||
{
|
||||
res = -1;
|
||||
set_winsock_errno ();
|
||||
}
|
||||
else
|
||||
res = ret;
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
int
|
||||
|
|
|
|||
|
|
@ -2112,7 +2112,11 @@ cygwin_recvmsg (int fd, struct msghdr *msg, int flags)
|
|||
|| !fh)
|
||||
res = -1;
|
||||
else
|
||||
res = fh->recvmsg (msg, flags);
|
||||
{
|
||||
res = check_iovec_for_read (msg->msg_iov, msg->msg_iovlen);
|
||||
if (res > 0)
|
||||
res = fh->recvmsg (msg, flags, res); // res == iovec tot
|
||||
}
|
||||
|
||||
syscall_printf ("%d = recvmsg (%d, %p, %x)", res, fd, msg, flags);
|
||||
return res;
|
||||
|
|
@ -2123,6 +2127,8 @@ extern "C" int
|
|||
cygwin_sendmsg (int fd, const struct msghdr *msg, int flags)
|
||||
{
|
||||
int res;
|
||||
sigframe thisframe (mainthread);
|
||||
|
||||
fhandler_socket *fh = get (fd);
|
||||
|
||||
if (__check_invalid_read_ptr_errno (msg, sizeof msg)
|
||||
|
|
@ -2131,8 +2137,12 @@ cygwin_sendmsg (int fd, const struct msghdr *msg, int flags)
|
|||
(unsigned) msg->msg_namelen))
|
||||
|| !fh)
|
||||
res = -1;
|
||||
else
|
||||
res = fh->sendmsg (msg, flags);
|
||||
else
|
||||
{
|
||||
res = check_iovec_for_write (msg->msg_iov, msg->msg_iovlen);
|
||||
if (res > 0)
|
||||
res = fh->sendmsg (msg, flags, res); // res == iovec tot
|
||||
}
|
||||
|
||||
syscall_printf ("%d = sendmsg (%d, %p, %x)", res, fd, msg, flags);
|
||||
return res;
|
||||
|
|
|
|||
Loading…
Reference in New Issue