103 строки
3.1 KiB
C
103 строки
3.1 KiB
C
/*
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* This file is part of the SSH Library
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*
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* Copyright (c) 2009 by Aris Adamantiadis
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*
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* The SSH Library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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*
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* The SSH Library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with the SSH Library; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA.
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*/
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#ifndef POLL_H_
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#define POLL_H_
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#include "config.h"
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#ifdef HAVE_POLL
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#include <poll.h>
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typedef struct pollfd ssh_pollfd_t;
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#else /* HAVE_POLL */
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/* poll emulation support */
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typedef struct ssh_pollfd_struct {
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socket_t fd; /* file descriptor */
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short events; /* requested events */
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short revents; /* returned events */
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} ssh_pollfd_t;
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/* poll.c */
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#ifndef POLLIN
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# define POLLIN 0x001 /* There is data to read. */
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#endif
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#ifndef POLLPRI
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#define POLLPRI 0x002 /* There is urgent data to read. */
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#endif
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#ifndef POLLOUT
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#define POLLOUT 0x004 /* Writing now will not block. */
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#endif
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#ifndef POLLERR
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#define POLLERR 0x008 /* Error condition. */
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#endif
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#ifndef POLLHUP
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#define POLLHUP 0x010 /* Hung up. */
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#endif
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#ifndef POLLNVAL
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#define POLLNVAL 0x020 /* Invalid polling request. */
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#endif
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typedef unsigned long int nfds_t;
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#endif /* HAVE_POLL */
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int ssh_poll(ssh_pollfd_t *fds, nfds_t nfds, int timeout);
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typedef struct ssh_poll_ctx SSH_POLL_CTX;
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typedef struct ssh_poll SSH_POLL;
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/**
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* @brief SSH poll callback.
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*
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* @param p Poll object this callback belongs to.
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* @param fd The raw socket.
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* @param revents The current poll events on the socket.
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* @param userdata Userdata to be passed to the callback function.
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*
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* @return 0 on success, < 0 if you removed the poll object from
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* it's poll context.
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*/
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typedef int (*ssh_poll_callback)(SSH_POLL *p, int fd, int revents,
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void *userdata);
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SSH_POLL *ssh_poll_new(socket_t fd, short events, ssh_poll_callback cb,
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void *userdata);
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void ssh_poll_free(SSH_POLL *p);
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SSH_POLL_CTX *ssh_poll_get_ctx(SSH_POLL *p);
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short ssh_poll_get_events(SSH_POLL *p);
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void ssh_poll_set_events(SSH_POLL *p, short events);
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void ssh_poll_add_events(SSH_POLL *p, short events);
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void ssh_poll_remove_events(SSH_POLL *p, short events);
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socket_t ssh_poll_get_fd(SSH_POLL *p);
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void ssh_poll_set_callback(SSH_POLL *p, ssh_poll_callback cb, void *userdata);
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SSH_POLL_CTX *ssh_poll_ctx_new(size_t chunk_size);
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void ssh_poll_ctx_free(SSH_POLL_CTX *ctx);
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int ssh_poll_ctx_add(SSH_POLL_CTX *ctx, SSH_POLL *p);
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void ssh_poll_ctx_remove(SSH_POLL_CTX *ctx, SSH_POLL *p);
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int ssh_poll_ctx(SSH_POLL_CTX *ctx, int timeout);
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#endif /* POLL_H_ */
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