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diff --git a/vendor/x11iraf/obm/Tcl/tclUnix.h b/vendor/x11iraf/obm/Tcl/tclUnix.h
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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 */