/*
   Copyright (C) 1995 Free Software Foundation, Inc.
   Copyright (C) 2000, 2002 Ben Wing.

This file is part of XEmacs.

XEmacs 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 3 of the License, or (at your
option) any later version.

XEmacs 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 XEmacs.  If not, see <http://www.gnu.org/licenses/>. */

/* Synched up with: Not really in FSF. */

#ifndef INCLUDED_sysproc_h_
#define INCLUDED_sysproc_h_

#include "systime.h" /* necessary for sys/resource.h; also gets the
			FD_* defines on some systems. */
#ifndef WIN32_NATIVE
#include <sys/resource.h>
#endif

#ifdef MINGW
#include <../mingw/process.h>
#elif defined (WIN32_NATIVE)
/* <process.h> should not conflict with "process.h", as per ANSI definition.
   This is not true with visual c though. The trick below works with
   VC4.2b, 5.0 and 6.0. It assumes that VC is installed in a kind of
   standard way, so include path ends with /include.
*/
#include <../include/process.h>
#endif

#ifdef HAVE_SOCKETS	/* TCP connection support, if kernel can do it */
# include <sys/types.h>  /* AJK */
# ifndef WIN32_NATIVE
#  include <sys/socket.h>
#  include <netdb.h>
#  include <netinet/in.h>
#  include <arpa/inet.h>
# endif
#endif /* HAVE_SOCKETS */

#ifdef WIN32_NATIVE
/* Note: winsock.h already included in systime.h above */
/* map winsock error codes to standard names */
#define EWOULDBLOCK             WSAEWOULDBLOCK
#define EINPROGRESS             WSAEINPROGRESS
#define EALREADY                WSAEALREADY
#define ENOTSOCK                WSAENOTSOCK
#define EDESTADDRREQ            WSAEDESTADDRREQ
#define EMSGSIZE                WSAEMSGSIZE
#define EPROTOTYPE              WSAEPROTOTYPE
#define ENOPROTOOPT             WSAENOPROTOOPT
#define EPROTONOSUPPORT         WSAEPROTONOSUPPORT
#define ESOCKTNOSUPPORT         WSAESOCKTNOSUPPORT
#define EOPNOTSUPP              WSAEOPNOTSUPP
#define EPFNOSUPPORT            WSAEPFNOSUPPORT
#define EAFNOSUPPORT            WSAEAFNOSUPPORT
#define EADDRINUSE              WSAEADDRINUSE
#define EADDRNOTAVAIL           WSAEADDRNOTAVAIL
#define ENETDOWN                WSAENETDOWN
#define ENETUNREACH             WSAENETUNREACH
#define ENETRESET               WSAENETRESET
#define ECONNABORTED            WSAECONNABORTED
#define ECONNRESET              WSAECONNRESET
#define ENOBUFS                 WSAENOBUFS
#define EISCONN                 WSAEISCONN
#define ENOTCONN                WSAENOTCONN
#define ESHUTDOWN               WSAESHUTDOWN
#define ETOOMANYREFS            WSAETOOMANYREFS
#define ETIMEDOUT               WSAETIMEDOUT
#define ECONNREFUSED            WSAECONNREFUSED
#define ELOOP                   WSAELOOP
/* #define ENAMETOOLONG            WSAENAMETOOLONG */
#define EHOSTDOWN               WSAEHOSTDOWN
#define EHOSTUNREACH            WSAEHOSTUNREACH
/* #define ENOTEMPTY               WSAENOTEMPTY */
#define EPROCLIM                WSAEPROCLIM
#define EUSERS                  WSAEUSERS
#define EDQUOT                  WSAEDQUOT
#define ESTALE                  WSAESTALE
#define EREMOTE                 WSAEREMOTE
#endif /* WIN32_NATIVE */

/* On some systems, e.g. DGUX, inet_addr returns a `struct in_addr'. */
#ifdef HAVE_BROKEN_INET_ADDR
# define IN_ADDR struct in_addr
# define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1)
#else
# if (LONGBITS > 32)
#  define IN_ADDR unsigned int
# else
#  define IN_ADDR unsigned long
# endif
# define NUMERIC_ADDR_ERROR (numeric_addr == (IN_ADDR) -1)
#endif

/* Define first descriptor number available for subprocesses.  */
#define FIRST_PROC_DESC 3

#ifdef AIX
#include <sys/select.h>
#endif

#ifdef HAVE_STROPTS_H
#include <stropts.h>		/* isastream(), I_PUSH */
#endif

#ifdef HAVE_STRTIO_H
#include <strtio.h>		/* TIOCSIGNAL */
#endif

#ifdef HAVE_PTY_H
#include <pty.h>		/* openpty() on Tru64, Linux */
#endif

#ifdef HAVE_LIBUTIL_H
#include <libutil.h>		/* openpty() on FreeBSD */
#endif

#ifdef HAVE_UTIL_H
#include <util.h>		/* openpty() on NetBSD */
#endif

/* The FD_* macros expand to __extension__ forms on glibc-based systems.  Uno
   does not understand such forms, so let's help it out. */
#ifdef UNO
#undef FD_SET
#undef FD_CLR
#undef FD_ISSET
#undef FD_ZERO
#undef MAXDESC
#undef SELECT_TYPE
#endif /* UNO */

#ifdef FD_SET

/* We could get this from param.h, but better not to depend on finding that.
   And better not to risk that it might define other symbols used in this
   file.  */
# ifdef FD_SETSIZE
#  define MAXDESC FD_SETSIZE
# else
#  define MAXDESC 64
# endif /* FD_SETSIZE */
# define SELECT_TYPE fd_set

#else /* no FD_SET */

# define MAXDESC 32
# define SELECT_TYPE int

/* Define the macros to access a single-int bitmap of descriptors.  */
# define FD_SET(n, p) (*(p) |= (1 << (n)))
# define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
# define FD_ISSET(n, p) (*(p) & (1 << (n)))
# define FD_ZERO(p) (*(p) = 0)

#endif /* no FD_SET */

int poll_fds_for_input (SELECT_TYPE mask);
int qxe_execve (const Ibyte *filename, Ibyte * const argv[],
		Ibyte * const envp[]);
pid_t qxe_getpid (void);

/* #### I would really like to delete the remaining synchronous code entirely.
   We are now using it only for *REALLY* old systems -- how many systems
   nowadays

   (a) lack job control, or
   (b) lack mkdir() or rmdir()

   ?????

   --ben
*/

#include "syssignal.h" /* needed for SIGTSTP */

#if !defined (WIN32_NATIVE) && (!defined (SIGTSTP) || !defined (HAVE_MKDIR) || !defined (HAVE_RMDIR))

#define NEED_SYNC_PROCESS_CODE

/* True iff we are about to fork off a synchronous process or if we
   are waiting for it.  */
extern volatile int synch_process_alive;

/* Nonzero => this is a string explaining death of synchronous subprocess.  */
extern const char *synch_process_death;

/* If synch_process_death is zero,
   this is exit code of synchronous subprocess.  */
extern int synch_process_retcode;

#endif


#endif /* INCLUDED_sysproc_h_ */