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/* assuan-io-pth.c - Pth version of assua-io.c.
* Copyright (C) 2002, 2004, 2006 Free Software Foundation, Inc.
*
* This file is part of Assuan.
*
* Assuan is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Assuan 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_SYS_UIO_H
# include <sys/uio.h>
#endif
#include <unistd.h>
#include <errno.h>
#ifdef HAVE_W32_SYSTEM
# include <windows.h>
#else
# include <sys/wait.h>
#endif
#include <pth.h>
#include "assuan-defs.h"
#ifndef HAVE_W32_SYSTEM
pid_t
_assuan_waitpid (pid_t pid, int *status, int options)
{
return pth_waitpid (pid, status, options);
}
#endif
ssize_t
_assuan_simple_read (assuan_context_t ctx, void *buffer, size_t size)
{
/* Fixme: For W32 we should better not cast the HANDLE type to int.
However, this requires changes in w32pth too. */
return pth_read ((int)ctx->inbound.fd, buffer, size);
}
ssize_t
_assuan_simple_write (assuan_context_t ctx, const void *buffer, size_t size)
{
return pth_write ((int)ctx->outbound.fd, buffer, size);
}
#ifdef HAVE_W32_SYSTEM
int
_assuan_simple_sendmsg (assuan_context_t ctx, void *msg)
#else
ssize_t
_assuan_simple_sendmsg (assuan_context_t ctx, struct msghdr *msg)
#endif
{
#if defined(HAVE_W32_SYSTEM)
return _assuan_error (ASSUAN_Not_Implemented);
#else
/* Pth does not provide a sendmsg function. Thus we implement it here. */
int ret;
int fd = ctx->outbound.fd;
int fdmode;
fdmode = pth_fdmode (fd, PTH_FDMODE_POLL);
if (fdmode == PTH_FDMODE_ERROR)
{
errno = EBADF;
return -1;
}
if (fdmode == PTH_FDMODE_BLOCK)
{
fd_set fds;
FD_ZERO (&fds);
FD_SET (fd, &fds);
while ( (ret = pth_select (fd+1, NULL, &fds, NULL, NULL)) < 0
&& errno == EINTR)
;
if (ret < 0)
return -1;
}
while ((ret = sendmsg (fd, msg, 0)) == -1 && errno == EINTR)
;
return ret;
#endif
}
#ifdef HAVE_W32_SYSTEM
int
_assuan_simple_recvmsg (assuan_context_t ctx, void *msg)
#else
ssize_t
_assuan_simple_recvmsg (assuan_context_t ctx, struct msghdr *msg)
#endif
{
#if defined(HAVE_W32_SYSTEM)
return _assuan_error (ASSUAN_Not_Implemented);
#else
/* Pth does not provide a recvmsg function. Thus we implement it here. */
int ret;
int fd = ctx->inbound.fd;
int fdmode;
fdmode = pth_fdmode (fd, PTH_FDMODE_POLL);
if (fdmode == PTH_FDMODE_ERROR)
{
errno = EBADF;
return -1;
}
if (fdmode == PTH_FDMODE_BLOCK)
{
fd_set fds;
FD_ZERO (&fds);
FD_SET (fd, &fds);
while ( (ret = pth_select (fd+1, &fds, NULL, NULL, NULL)) < 0
&& errno == EINTR)
;
if (ret < 0)
return -1;
}
while ((ret = recvmsg (fd, msg, 0)) == -1 && errno == EINTR)
;
return ret;
#endif
}
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