/* Copyright (c) 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  */

#if !defined(ATF_C_DETAIL_PROCESS_H)
#define ATF_C_DETAIL_PROCESS_H

#include <sys/types.h>

#include <stdbool.h>

#include <atf-c/detail/fs.h>
#include <atf-c/detail/list.h>
#include <atf-c/error_fwd.h>

/* ---------------------------------------------------------------------
 * The "atf_process_stream" type.
 * --------------------------------------------------------------------- */

struct atf_process_stream {
    int m_type;

    /* Valid if m_type == connect. */
    int m_src_fd;
    int m_tgt_fd;

    /* Valid if m_type == redirect_fd. */
    int m_fd;

    /* Valid if m_type == redirect_path. */
    const atf_fs_path_t *m_path;
};
typedef struct atf_process_stream atf_process_stream_t;

extern const int atf_process_stream_type_capture;
extern const int atf_process_stream_type_connect;
extern const int atf_process_stream_type_inherit;
extern const int atf_process_stream_type_redirect_fd;
extern const int atf_process_stream_type_redirect_path;

atf_error_t atf_process_stream_init_capture(atf_process_stream_t *);
atf_error_t atf_process_stream_init_connect(atf_process_stream_t *,
                                            const int, const int);
atf_error_t atf_process_stream_init_inherit(atf_process_stream_t *);
atf_error_t atf_process_stream_init_redirect_fd(atf_process_stream_t *,
                                                const int fd);
atf_error_t atf_process_stream_init_redirect_path(atf_process_stream_t *,
                                                  const atf_fs_path_t *);
void atf_process_stream_fini(atf_process_stream_t *);

int atf_process_stream_type(const atf_process_stream_t *);

/* ---------------------------------------------------------------------
 * The "atf_process_status" type.
 * --------------------------------------------------------------------- */

struct atf_process_status {
    int m_status;
};
typedef struct atf_process_status atf_process_status_t;

void atf_process_status_fini(atf_process_status_t *);

bool atf_process_status_exited(const atf_process_status_t *);
int atf_process_status_exitstatus(const atf_process_status_t *);
bool atf_process_status_signaled(const atf_process_status_t *);
int atf_process_status_termsig(const atf_process_status_t *);
bool atf_process_status_coredump(const atf_process_status_t *);

/* ---------------------------------------------------------------------
 * The "atf_process_child" type.
 * --------------------------------------------------------------------- */

struct atf_process_child {
    pid_t m_pid;

    int m_stdout;
    int m_stderr;
};
typedef struct atf_process_child atf_process_child_t;

atf_error_t atf_process_child_wait(atf_process_child_t *,
                                   atf_process_status_t *);
pid_t atf_process_child_pid(const atf_process_child_t *);
int atf_process_child_stdout(atf_process_child_t *);
int atf_process_child_stderr(atf_process_child_t *);

/* ---------------------------------------------------------------------
 * Free functions.
 * --------------------------------------------------------------------- */

atf_error_t atf_process_fork(atf_process_child_t *,
                             void (*)(void *),
                             const atf_process_stream_t *,
                             const atf_process_stream_t *,
                             void *);
atf_error_t atf_process_exec_array(atf_process_status_t *,
                                   const atf_fs_path_t *,
                                   const char *const *,
                                   const atf_process_stream_t *,
                                   const atf_process_stream_t *,
                                   void (*)(void));
atf_error_t atf_process_exec_list(atf_process_status_t *,
                                  const atf_fs_path_t *,
                                  const atf_list_t *,
                                  const atf_process_stream_t *,
                                  const atf_process_stream_t *,
                                  void (*)(void));

#endif /* !defined(ATF_C_DETAIL_PROCESS_H) */