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+/* priv-io.h - Interface to the private I/O functions.
+ Copyright (C) 2000 Werner Koch (dd9jn)
+ Copyright (C) 2001, 2002, 2003, 2004, 2005 g10 Code GmbH
+ This file is part of GPGME.
+ GPGME 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.
+ GPGME is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+#ifndef IO_H
+#define IO_H
+#ifdef HAVE_W32_SYSTEM
+# ifdef HAVE_W32CE_SYSTEM
+# include "w32-ce.h"
+# endif
+# include <windows.h>
+# include <sys/socket.h>
+/* For pid_t. */
+# include <sys/types.h>
+/* A single file descriptor passed to spawn. For child fds, dup_to
+ specifies the fd it should become in the child, but only 0, 1 and 2
+ are valid values (due to a limitation in the W32 code). As return
+ value, the PEER_NAME fields specify the name of the file
+ descriptor in the spawned process, or -1 if no change. If ARG_LOC
+ is not 0, it specifies the index in the argument vector of the
+ program which contains a numerical representation of the file
+ descriptor for translation purposes. */
+struct spawn_fd_item_s
+ int fd;
+ int dup_to;
+ int peer_name;
+ int arg_loc;
+struct io_select_fd_s
+ int fd;
+ int for_read;
+ int for_write;
+ int signaled;
+ void *opaque;
+/* These function are either defined in posix-io.c or w32-io.c. */
+void _gpgme_io_subsystem_init (void);
+int _gpgme_io_socket (int namespace, int style, int protocol);
+int _gpgme_io_connect (int fd, struct sockaddr *addr, int addrlen);
+int _gpgme_io_read (int fd, void *buffer, size_t count);
+int _gpgme_io_write (int fd, const void *buffer, size_t count);
+int _gpgme_io_pipe (int filedes[2], int inherit_idx);
+int _gpgme_io_close (int fd);
+typedef void (*_gpgme_close_notify_handler_t) (int,void*);
+int _gpgme_io_set_close_notify (int fd, _gpgme_close_notify_handler_t handler,
+ void *value);
+int _gpgme_io_set_nonblocking (int fd);
+/* A flag to tell the spawn function to allow the child process to set
+ the foreground window. */
+/* Don't close any child FDs. */
+/* Spawn the executable PATH with ARGV as arguments. After forking
+ close all fds except for those in FD_LIST in the child, then
+ optionally dup() the child fds. Finally, all fds in the list are
+ closed in the parent. */
+int _gpgme_io_spawn (const char *path, char *const argv[], unsigned int flags,
+ struct spawn_fd_item_s *fd_list,
+ void (*atfork) (void *opaque, int reserved),
+ void *atforkvalue, pid_t *r_pid);
+int _gpgme_io_select (struct io_select_fd_s *fds, size_t nfds, int nonblock);
+/* Write the printable version of FD to the buffer BUF of length
+ BUFLEN. The printable version is the representation on the command
+ line that the child process expects. */
+int _gpgme_io_fd2str (char *buf, int buflen, int fd);
+/* Duplicate a file descriptor. This is more restrictive than dup():
+ it assumes that the resulting file descriptors are essentially
+ co-equal (for example, no private offset), which is true for pipes
+ and sockets (but not files) under Unix with the standard dup()
+ function. Basically, this function is used to reference count the
+ status output file descriptor shared between GPGME and libassuan
+ (in engine-gpgsm.c). */
+int _gpgme_io_dup (int fd);
+#ifndef HAVE_W32_SYSTEM
+int _gpgme_io_recvmsg (int fd, struct msghdr *msg, int flags);
+int _gpgme_io_sendmsg (int fd, const struct msghdr *msg, int flags);
+int _gpgme_io_waitpid (int pid, int hang, int *r_status, int *r_signal);
+#endif /* IO_H */