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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 1.41 93/07/08 09:59:26 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
- #ifndef HAVE_UNISTD
- # 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;
- extern int sys_nerr;
- extern char *sys_errlist[];
-
- /*
- * The type of the status returned by wait varies from UNIX system
- * to UNIX system. The macro below defines it:
- */
-
- #ifndef NO_UNION_WAIT
- # define WAIT_STATUS_TYPE union wait
- #else
- # define WAIT_STATUS_TYPE int
- #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, char *buf, size_t numBytes));
- EXTERN int TclWaitpid _ANSI_ARGS_((pid_t pid, int *statPtr, int options));
- EXTERN int TclWrite _ANSI_ARGS_((int fd, char *buf, size_t numBytes));
-
- /*
- * Variables provided by the C library:
- */
-
- #if defined(_sgi) || defined(__sgi)
- #define environ _environ
- #endif
- extern char **environ;
-
- #endif /* _TCLUNIX */
-