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/* Copyright (C) 2000 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/*
Note that we can't have assertion on file descriptors; The reason for
this is that during mysql shutdown, another thread can close a file
we are working on. In this case we should just return read errors from
the file descriptior.
*/
#include "vio_priv.h"
/*
* Helper to fill most of the Vio* with defaults.
*/
void vio_reset(Vio* vio, enum enum_vio_type type,
my_socket sd, HANDLE hPipe,
my_bool localhost)
{
DBUG_ENTER("vio_reset");
DBUG_PRINT("enter", ("type=%d sd=%d localhost=%d", type, sd, localhost));
bzero((char*) vio, sizeof(*vio));
vio->type = type;
vio->sd = sd;
vio->hPipe = hPipe;
vio->localhost= localhost;
#ifdef HAVE_VIO
#ifdef __WIN__
if (type == VIO_TYPE_NAMEDPIPE)
{
vio->viodelete =vio_delete;
vio->vioerrno =vio_errno;
vio->read =vio_read_pipe;
vio->write =vio_write_pipe;
vio->fastsend =vio_fastsend;
vio->viokeepalive =vio_keepalive;
vio->should_retry =vio_should_retry;
vio->vioclose =vio_close_pipe;
vio->peer_addr =vio_peer_addr;
vio->in_addr =vio_in_addr;
vio->vioblocking =vio_blocking;
vio->is_blocking =vio_is_blocking;
vio->timeout =vio_ignore_timeout;
}
else /* default is VIO_TYPE_TCPIP */
#endif
#ifdef HAVE_SMEM
if (type == VIO_TYPE_SHARED_MEMORY)
{
vio->viodelete =vio_delete;
vio->vioerrno =vio_errno;
vio->read =vio_read_shared_memory;
vio->write =vio_write_shared_memory;
vio->fastsend =vio_fastsend;
vio->viokeepalive =vio_keepalive;
vio->should_retry =vio_should_retry;
vio->vioclose =vio_close_shared_memory;
vio->peer_addr =vio_peer_addr;
vio->in_addr =vio_in_addr;
vio->vioblocking =vio_blocking;
vio->is_blocking =vio_is_blocking;
vio->timeout =vio_ignore_timeout;
}
else
#endif
#ifdef HAVE_OPENSSL
if (type == VIO_TYPE_SSL)
{
vio->viodelete =vio_ssl_delete;
vio->vioerrno =vio_ssl_errno;
vio->read =vio_ssl_read;
vio->write =vio_ssl_write;
vio->fastsend =vio_ssl_fastsend;
vio->viokeepalive =vio_ssl_keepalive;
vio->should_retry =vio_ssl_should_retry;
vio->vioclose =vio_ssl_close;
vio->peer_addr =vio_ssl_peer_addr;
vio->in_addr =vio_ssl_in_addr;
vio->vioblocking =vio_ssl_blocking;
vio->is_blocking =vio_is_blocking;
vio->timeout =vio_ssl_timeout;
}
else /* default is VIO_TYPE_TCPIP */
#endif /* HAVE_OPENSSL */
{
vio->viodelete =vio_delete;
vio->vioerrno =vio_errno;
vio->read =vio_read;
vio->write =vio_write;
vio->fastsend =vio_fastsend;
vio->viokeepalive =vio_keepalive;
vio->should_retry =vio_should_retry;
vio->vioclose =vio_close;
vio->peer_addr =vio_peer_addr;
vio->in_addr =vio_in_addr;
vio->vioblocking =vio_blocking;
vio->is_blocking =vio_is_blocking;
vio->timeout =vio_timeout;
}
#endif /* HAVE_VIO */
DBUG_VOID_RETURN;
}
/* Open the socket or TCP/IP connection and read the fnctl() status */
Vio *vio_new(my_socket sd, enum enum_vio_type type, my_bool localhost)
{
Vio *vio;
DBUG_ENTER("vio_new");
DBUG_PRINT("enter", ("sd=%d", sd));
if ((vio = (Vio*) my_malloc(sizeof(*vio),MYF(MY_WME))))
{
vio_reset(vio, type, sd, 0, localhost);
sprintf(vio->desc,
(vio->type == VIO_TYPE_SOCKET ? "socket (%d)" : "TCP/IP (%d)"),
vio->sd);
#if !defined(___WIN__) && !defined(__EMX__) && !defined(OS2)
#if !defined(NO_FCNTL_NONBLOCK)
#if defined(__FreeBSD__)
fcntl(sd, F_SETFL, vio->fcntl_mode); /* Yahoo! FreeBSD patch */
#endif
vio->fcntl_mode = fcntl(sd, F_GETFL);
#elif defined(HAVE_SYS_IOCTL_H) /* hpux */
/* Non blocking sockets doesn't work good on HPUX 11.0 */
(void) ioctl(sd,FIOSNBIO,0);
vio->fcntl_mode &= ~O_NONBLOCK;
#endif
#else /* !defined(__WIN__) && !defined(__EMX__) */
{
/* set to blocking mode by default */
ulong arg=0, r;
r = ioctlsocket(sd,FIONBIO,(void*) &arg, sizeof(arg));
vio->fcntl_mode &= ~O_NONBLOCK;
}
#endif
}
DBUG_RETURN(vio);
}
#ifdef __WIN__
Vio *vio_new_win32pipe(HANDLE hPipe)
{
Vio *vio;
DBUG_ENTER("vio_new_handle");
if ((vio = (Vio*) my_malloc(sizeof(Vio),MYF(MY_WME))))
{
vio_reset(vio, VIO_TYPE_NAMEDPIPE, 0, hPipe, TRUE);
strmov(vio->desc, "named pipe");
}
DBUG_RETURN(vio);
}
#ifdef HAVE_SMEM
Vio *vio_new_win32shared_memory(NET *net,HANDLE handle_file_map, HANDLE handle_map,
HANDLE event_server_wrote, HANDLE event_server_read,
HANDLE event_client_wrote, HANDLE event_client_read)
{
Vio *vio;
DBUG_ENTER("vio_new_win32shared_memory");
if ((vio = (Vio*) my_malloc(sizeof(Vio),MYF(MY_WME))))
{
vio_reset(vio, VIO_TYPE_SHARED_MEMORY, 0, 0, TRUE);
vio->handle_file_map = handle_file_map;
vio->handle_map = handle_map;
vio->event_server_wrote = event_server_wrote;
vio->event_server_read = event_server_read;
vio->event_client_wrote = event_client_wrote;
vio->event_client_read = event_client_read;
vio->shared_memory_remain = 0;
vio->shared_memory_pos = handle_map;
vio->net = net;
strmov(vio->desc, "shared memory");
}
DBUG_RETURN(vio);
}
#endif
#endif
void vio_delete(Vio* vio)
{
/* It must be safe to delete null pointers. */
/* This matches the semantics of C++'s delete operator. */
if (vio)
{
if (vio->type != VIO_CLOSED)
#ifdef HAVE_VIO /*WAX*/
vio->vioclose(vio);
#else
vio_close(vio);
#endif
my_free((gptr) vio,MYF(0));
}
}
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