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/*
* Copyright 2017 Google Inc.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/*
* Author: weiwan@google.com (Wei Wang)
*
* Implementation for pipe related state and logic.
*/
#include "pipe.h"
#include <stdlib.h>
#include <string.h>
#include "run.h"
void pipe_free(struct pipe *pipe)
{
memset(pipe, 0, sizeof(*pipe));
free(pipe);
}
void pipe_close(struct state *state, struct fd_state *fd)
{
pipe_free(fd_to_pipe(fd));
}
/* Global info about pipe descriptors that point to pipes. */
struct fd_ops pipe_ops = {
.type = FD_PIPE,
.close = pipe_close,
};
struct pipe *pipe_new(struct state *state)
{
struct pipe *pipe = calloc(1, sizeof(struct pipe));
pipe->fd.ops = &pipe_ops;
state_add_fd(state, to_fd(pipe));
return pipe;
}
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