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/*
* tclUnix.h --
*
* This file reads in UNIX-related header files and sets up
* UNIX-related macros for Tcl's UNIX core. It should be the
* only file that contains #ifdefs to handle different flavors
* of UNIX. This file sets up the union of all UNIX-related
* things needed by any of the Tcl core files. This file
* depends on configuration #defines in tclConfig.h
*
* Much of the material in this file was originally contributed
* by Karl Lehenbauer, Mark Diekhans and Peter da Silva.
*
* Copyright (c) 1991-1993 The Regents of the University of California.
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* $Header: /user6/ouster/tcl/RCS/tclUnix.h,v 1.46 93/10/28 16:32:28 ouster Exp $ SPRITE (Berkeley)
*/
#ifndef _TCLUNIX
#define _TCLUNIX
#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <signal.h>
#include <sys/param.h>
#include <sys/types.h>
#ifdef USE_DIRENT2_H
# include "compat/dirent2.h"
#else
# ifdef NO_DIRENT_H
# include "compat/dirent.h"
# else
# include <dirent.h>
# endif
#endif
#include <sys/file.h>
#include <sys/stat.h>
#ifndef NO_SYS_TIME_H
# include <sys/time.h>
#else
# include <time.h>
#endif
#ifndef NO_SYS_WAIT_H
# include <sys/wait.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#else
# include "compat/unistd.h"
#endif
/*
* Not all systems declare the errno variable in errno.h. so this
* file does it explicitly. The list of system error messages also
* isn't generally declared in a header file anywhere.
*/
extern int errno;
/*
* The type of the status returned by wait varies from UNIX system
* to UNIX system. The macro below defines it:
*/
#ifdef AIX
# define WAIT_STATUS_TYPE pid_t
#else
#ifndef NO_UNION_WAIT
# define WAIT_STATUS_TYPE union wait
#else
# define WAIT_STATUS_TYPE int
#endif
#endif
/*
* Supply definitions for macros to query wait status, if not already
* defined in header files above.
*/
#ifndef WIFEXITED
# define WIFEXITED(stat) (((*((int *) &(stat))) & 0xff) == 0)
#endif
#ifndef WEXITSTATUS
# define WEXITSTATUS(stat) (((*((int *) &(stat))) >> 8) & 0xff)
#endif
#ifndef WIFSIGNALED
# define WIFSIGNALED(stat) (((*((int *) &(stat)))) && ((*((int *) &(stat))) == ((*((int *) &(stat))) & 0x00ff)))
#endif
#ifndef WTERMSIG
# define WTERMSIG(stat) ((*((int *) &(stat))) & 0x7f)
#endif
#ifndef WIFSTOPPED
# define WIFSTOPPED(stat) (((*((int *) &(stat))) & 0xff) == 0177)
#endif
#ifndef WSTOPSIG
# define WSTOPSIG(stat) (((*((int *) &(stat))) >> 8) & 0xff)
#endif
/*
* Supply macros for seek offsets, if they're not already provided by
* an include file.
*/
#ifndef SEEK_SET
# define SEEK_SET 0
#endif
#ifndef SEEK_CUR
# define SEEK_CUR 1
#endif
#ifndef SEEK_END
# define SEEK_END 2
#endif
/*
* The stuff below is needed by the "time" command. If this
* system has no gettimeofday call, then must use times and the
* CLK_TCK #define (from sys/param.h) to compute elapsed time.
* Unfortunately, some systems only have HZ and no CLK_TCK, and
* some might not even have HZ.
*/
#ifdef NO_GETTOD
# include <sys/times.h>
# include <sys/param.h>
# ifndef CLK_TCK
# ifdef HZ
# define CLK_TCK HZ
# else
# define CLK_TCK 60
# endif
# endif
#endif
/*
* Define access mode constants if they aren't already defined.
*/
#ifndef F_OK
# define F_OK 00
#endif
#ifndef X_OK
# define X_OK 01
#endif
#ifndef W_OK
# define W_OK 02
#endif
#ifndef R_OK
# define R_OK 04
#endif
/*
* On systems without symbolic links (i.e. S_IFLNK isn't defined)
* define "lstat" to use "stat" instead.
*/
#ifndef S_IFLNK
# define lstat stat
#endif
/*
* Define macros to query file type bits, if they're not already
* defined.
*/
#ifndef S_ISREG
# ifdef S_IFREG
# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
# else
# define S_ISREG(m) 0
# endif
# endif
#ifndef S_ISDIR
# ifdef S_IFDIR
# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
# else
# define S_ISDIR(m) 0
# endif
# endif
#ifndef S_ISCHR
# ifdef S_IFCHR
# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
# else
# define S_ISCHR(m) 0
# endif
# endif
#ifndef S_ISBLK
# ifdef S_IFBLK
# define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
# else
# define S_ISBLK(m) 0
# endif
# endif
#ifndef S_ISFIFO
# ifdef S_IFIFO
# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
# else
# define S_ISFIFO(m) 0
# endif
# endif
#ifndef S_ISLNK
# ifdef S_IFLNK
# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
# else
# define S_ISLNK(m) 0
# endif
# endif
#ifndef S_ISSOCK
# ifdef S_IFSOCK
# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
# else
# define S_ISSOCK(m) 0
# endif
# endif
/*
* Make sure that MAXPATHLEN is defined.
*/
#ifndef MAXPATHLEN
# ifdef PATH_MAX
# define MAXPATHLEN PATH_MAX
# else
# define MAXPATHLEN 2048
# endif
#endif
/*
* Make sure that L_tmpnam is defined.
*/
#ifndef L_tmpnam
# define L_tmpnam 100
#endif
/*
* Substitute Tcl's own versions for several system calls. The
* Tcl versions retry automatically if interrupted by signals.
* (see tclUnixUtil.c).
*/
#define open(a,b,c) TclOpen(a,b,c)
#define read(a,b,c) TclRead(a,b,c)
#define waitpid(a,b,c) TclWaitpid(a,b,c)
#define write(a,b,c) TclWrite(a,b,c)
EXTERN int TclOpen _ANSI_ARGS_((char *path, int oflag, int mode));
EXTERN int TclRead _ANSI_ARGS_((int fd, VOID *buf, size_t numBytes));
EXTERN int TclWaitpid _ANSI_ARGS_((pid_t pid, int *statPtr, int options));
EXTERN int TclWrite _ANSI_ARGS_((int fd, VOID *buf, size_t numBytes));
/*
* Variables provided by the C library:
*/
#if defined(_sgi) || defined(__sgi)
#define environ _environ
#endif
extern char **environ;
#endif /* _TCLUNIX */
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