mirror of
git://git.code.sf.net/p/zsh/code
synced 2024-11-19 13:33:52 +01:00
599 lines
14 KiB
C
599 lines
14 KiB
C
/*
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* system.h - system configuration header file
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*
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* This file is part of zsh, the Z shell.
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*
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* Copyright (c) 1992-1997 Paul Falstad
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and to distribute modified versions of this software for any
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* purpose, provided that the above copyright notice and the following
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* two paragraphs appear in all copies of this software.
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*
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* In no event shall Paul Falstad or the Zsh Development Group be liable
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* to any party for direct, indirect, special, incidental, or consequential
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* damages arising out of the use of this software and its documentation,
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* even if Paul Falstad and the Zsh Development Group have been advised of
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* the possibility of such damage.
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*
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* Paul Falstad and the Zsh Development Group specifically disclaim any
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* warranties, including, but not limited to, the implied warranties of
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* merchantability and fitness for a particular purpose. The software
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* provided hereunder is on an "as is" basis, and Paul Falstad and the
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* Zsh Development Group have no obligation to provide maintenance,
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* support, updates, enhancements, or modifications.
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*
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*/
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#ifdef __hpux
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# define _INCLUDE_POSIX_SOURCE 1
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# define _INCLUDE_XOPEN_SOURCE 1
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# define _INCLUDE_HPUX_SOURCE 1
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#endif
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#ifdef sinix
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# define _XPG_IV 1
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#endif
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/* NeXT has half-implemented POSIX support *
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* which currently fools configure */
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#ifdef __NeXT__
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# undef HAVE_TERMIOS_H
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# undef HAVE_SYS_UTSNAME_H
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#endif
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#ifdef PROTOTYPES
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# define _(Args) Args
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#else
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# define _(Args) ()
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#endif
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#ifndef HAVE_ALLOCA
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# define alloca halloc
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#else
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# ifdef __GNUC__
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# define alloca __builtin_alloca
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# else
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# if HAVE_ALLOCA_H
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# include <alloca.h>
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# else
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# ifdef _AIX
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# pragma alloca
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# else
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# ifndef alloca
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char *alloca _((size_t));
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# endif
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# endif
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# endif
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# endif
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#endif
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#ifdef HAVE_LIBC_H /* NeXT */
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# include <libc.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <stdio.h>
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#include <ctype.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <setjmp.h>
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#ifdef HAVE_PWD_H
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# include <pwd.h>
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#endif
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#ifdef HAVE_GRP_H
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# include <grp.h>
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#endif
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#ifdef HAVE_DIRENT_H
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# include <dirent.h>
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#else /* !HAVE_DIRENT_H */
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# ifdef HAVE_SYS_NDIR_H
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# include <sys/ndir.h>
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# endif
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# ifdef HAVE_SYS_DIR_H
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# include <sys/dir.h>
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# endif
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# ifdef HAVE_NDIR_H
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# include <ndir.h>
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# endif
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# define dirent direct
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# undef HAVE_STRUCT_DIRENT_D_INO
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# undef HAVE_STRUCT_DIRENT_D_STAT
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# ifdef HAVE_STRUCT_DIRECT_D_INO
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# define HAVE_STRUCT_DIRENT_D_INO HAVE_STRUCT_DIRECT_D_INO
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# endif
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# ifdef HAVE_STRUCT_DIRECT_D_STAT
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# define HAVE_STRUCT_DIRENT_D_STAT HAVE_STRUCT_DIRECT_D_STAT
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# endif
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#endif /* !HAVE_DIRENT_H */
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#ifdef HAVE_STDLIB_H
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# ifdef ZSH_MEM
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/* malloc and calloc are macros in GNU's stdlib.h unless the
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* the __MALLOC_0_RETURNS_NULL macro is defined */
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# define __MALLOC_0_RETURNS_NULL
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# endif
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# include <stdlib.h>
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#endif
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#ifdef HAVE_ERRNO_H
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# include <errno.h>
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#endif
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#ifdef TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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/* This is needed by some old SCO unices */
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#ifndef HAVE_STRUCT_TIMEZONE
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struct timezone {
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int tz_minuteswest;
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int tz_dsttime;
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};
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#endif
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/* There's more than one non-standard way to get at this data */
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#if !defined(HAVE_STRUCT_DIRENT_D_INO) && defined(HAVE_STRUCT_DIRENT_D_STAT)
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# define d_ino d_stat.st_ino
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# define HAVE_STRUCT_DIRENT_D_INO HAVE_STRUCT_DIRENT_D_STAT
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#endif /* !HAVE_STRUCT_DIRENT_D_INO && HAVE_STRUCT_DIRENT_D_STAT */
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/* Sco needs the following include for struct utimbuf *
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* which is strange considering we do not use that *
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* anywhere in the code */
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#ifdef __sco
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# include <utime.h>
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#endif
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#ifdef HAVE_SYS_TIMES_H
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# include <sys/times.h>
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#endif
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#if STDC_HEADERS || HAVE_STRING_H
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# include <string.h>
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/* An ANSI string.h and pre-ANSI memory.h might conflict. */
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# if !STDC_HEADERS && HAVE_MEMORY_H
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# include <memory.h>
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# endif /* not STDC_HEADERS and HAVE_MEMORY_H */
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#else /* not STDC_HEADERS and not HAVE_STRING_H */
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# include <strings.h>
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/* memory.h and strings.h conflict on some systems. */
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#endif /* not STDC_HEADERS and not HAVE_STRING_H */
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#ifdef HAVE_LOCALE_H
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# include <locale.h>
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#endif
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#ifdef HAVE_LIMITS_H
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# include <limits.h>
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#endif
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#ifdef HAVE_VARIABLE_LENGTH_ARRAYS
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# define VARARR(X,Y,Z) X (Y)[Z]
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#else
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# define VARARR(X,Y,Z) X *(Y) = (X *) alloca(sizeof(X) * (Z))
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#endif
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/* we should be getting this value from pathconf(_PC_PATH_MAX) */
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/* but this is too much trouble */
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#ifndef PATH_MAX
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# ifdef MAXPATHLEN
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# define PATH_MAX MAXPATHLEN
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# else
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/* so we will just pick something */
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# define PATH_MAX 1024
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# endif
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#endif
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/* we should be getting this value from sysconf(_SC_OPEN_MAX) */
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/* but this is too much trouble */
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#ifndef OPEN_MAX
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# ifdef NOFILE
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# define OPEN_MAX NOFILE
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# else
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/* so we will just pick something */
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# define OPEN_MAX 64
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# endif
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#endif
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#else
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# include <sys/file.h>
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#endif
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/* The following will only be defined if <sys/wait.h> is POSIX. *
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* So we don't have to worry about union wait. But some machines *
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* (NeXT) include <sys/wait.h> from other include files, so we *
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* need to undef and then redefine the wait macros if <sys/wait.h> *
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* is not POSIX. */
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#ifdef HAVE_SYS_WAIT_H
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# include <sys/wait.h>
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#else
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# undef WIFEXITED
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# undef WEXITSTATUS
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# undef WIFSIGNALED
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# undef WTERMSIG
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# undef WCOREDUMP
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# undef WIFSTOPPED
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# undef WSTOPSIG
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#endif
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/* missing macros for wait/waitpid/wait3 */
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#ifndef WIFEXITED
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# define WIFEXITED(X) (((X)&0377)==0)
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#endif
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#ifndef WEXITSTATUS
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# define WEXITSTATUS(X) (((X)>>8)&0377)
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#endif
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#ifndef WIFSIGNALED
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# define WIFSIGNALED(X) (((X)&0377)!=0&&((X)&0377)!=0177)
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#endif
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#ifndef WTERMSIG
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# define WTERMSIG(X) ((X)&0177)
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#endif
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#ifndef WCOREDUMP
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# define WCOREDUMP(X) ((X)&0200)
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#endif
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#ifndef WIFSTOPPED
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# define WIFSTOPPED(X) (((X)&0377)==0177)
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#endif
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#ifndef WSTOPSIG
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# define WSTOPSIG(X) (((X)>>8)&0377)
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#endif
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#ifdef HAVE_SYS_SELECT_H
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# ifndef TIME_H_SELECT_H_CONFLICTS
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# include <sys/select.h>
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# endif
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#endif
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#ifdef HAVE_SYS_FILIO_H
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# include <sys/filio.h>
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#endif
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#ifdef HAVE_TERMIOS_H
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# ifdef __sco
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/* termios.h includes sys/termio.h instead of sys/termios.h; *
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* hence the declaration for struct termios is missing */
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# include <sys/termios.h>
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# else
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# include <termios.h>
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# endif
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# ifdef _POSIX_VDISABLE
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# define VDISABLEVAL _POSIX_VDISABLE
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# else
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# define VDISABLEVAL 0
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# endif
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# define HAS_TIO 1
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#else /* not TERMIOS */
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# ifdef HAVE_TERMIO_H
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# include <termio.h>
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# define VDISABLEVAL -1
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# define HAS_TIO 1
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# else /* not TERMIOS and TERMIO */
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# include <sgtty.h>
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# endif /* HAVE_TERMIO_H */
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#endif /* HAVE_TERMIOS_H */
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#ifdef HAVE_TERMCAP_H
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# include <termcap.h>
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#endif
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#if defined(GWINSZ_IN_SYS_IOCTL) || defined(CLOBBERS_TYPEAHEAD)
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# include <sys/ioctl.h>
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#endif
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#ifdef WINSIZE_IN_PTEM
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# include <sys/stream.h>
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# include <sys/ptem.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#ifdef HAVE_SYS_UTSNAME_H
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# include <sys/utsname.h>
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#endif
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#define DEFAULT_WORDCHARS "*?_-.[]~=/&;!#$%^(){}<>"
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#define DEFAULT_TIMEFMT "%J %U user %S system %P cpu %*E total"
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/* Posix getpgrp takes no argument, while the BSD version *
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* takes the process ID as an argument */
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#ifdef GETPGRP_VOID
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# define GETPGRP() getpgrp()
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#else
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# define GETPGRP() getpgrp(0)
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#endif
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#ifndef HAVE_GETLOGIN
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# define getlogin() cuserid(NULL)
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#endif
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#ifdef HAVE_SETPGID
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# define setpgrp setpgid
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#endif
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/* can we set the user/group id of a process */
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#ifndef HAVE_SETUID
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# ifdef HAVE_SETREUID
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# define setuid(X) setreuid(X,X)
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# define setgid(X) setregid(X,X)
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# define HAVE_SETUID
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# endif
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#endif
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/* can we set the effective user/group id of a process */
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#ifndef HAVE_SETEUID
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# ifdef HAVE_SETREUID
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# define seteuid(X) setreuid(-1,X)
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# define setegid(X) setregid(-1,X)
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# define HAVE_SETEUID
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# else
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# ifdef HAVE_SETRESUID
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# define seteuid(X) setresuid(-1,X,-1)
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# define setegid(X) setresgid(-1,X,-1)
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# define HAVE_SETEUID
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# endif
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# endif
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#endif
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#ifdef HAVE_SYS_RESOURCE_H
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# include <sys/resource.h>
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# if defined(__hpux) && !defined(RLIMIT_CPU)
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/* HPUX does have the BSD rlimits in the kernel. Officially they are *
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* unsupported but quite a few of them like RLIMIT_CORE seem to work. *
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* All the following are in the <sys/resource.h> but made visible *
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* only for the kernel. */
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# define RLIMIT_CPU 0
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# define RLIMIT_FSIZE 1
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# define RLIMIT_DATA 2
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# define RLIMIT_STACK 3
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# define RLIMIT_CORE 4
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# define RLIMIT_RSS 5
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# define RLIMIT_NOFILE 6
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# define RLIMIT_OPEN_MAX RLIMIT_NOFILE
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# define RLIM_NLIMITS 7
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# define RLIM_INFINITY 0x7fffffff
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# endif
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#endif
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/* we use the SVR4 constant instead of the BSD one */
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#if !defined(RLIMIT_NOFILE) && defined(RLIMIT_OFILE)
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# define RLIMIT_NOFILE RLIMIT_OFILE
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#endif
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#if !defined(RLIMIT_VMEM) && defined(RLIMIT_AS)
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# define RLIMIT_VMEM RLIMIT_AS
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#endif
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#ifdef HAVE_SYS_CAPABILITY_H
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# include <sys/capability.h>
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#endif
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/* DIGBUFSIZ is the length of a buffer which can hold the -LONG_MAX-1 *
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* converted to printable decimal form including the sign and the *
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* terminating null character. Below 0.30103 > lg 2. */
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#define DIGBUFSIZE ((int)(((sizeof(long) * 8) - 1) * 0.30103) + 3)
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/* If your stat macros are broken, we will *
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* just undefine them. */
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#ifdef STAT_MACROS_BROKEN
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# undef S_ISBLK
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# undef S_ISCHR
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# undef S_ISDIR
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# undef S_ISFIFO
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# undef S_ISLNK
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# undef S_ISMPB
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# undef S_ISMPC
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# undef S_ISNWK
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# undef S_ISOFD
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# undef S_ISOFL
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# undef S_ISREG
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# undef S_ISSOCK
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#endif /* STAT_MACROS_BROKEN. */
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/* If you are missing the stat macros, we *
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* define our own */
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#ifndef S_IFMT
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# define S_IFMT 0170000
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#endif
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#if !defined(S_ISBLK) && defined(S_IFBLK)
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# define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
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#endif
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#if !defined(S_ISCHR) && defined(S_IFCHR)
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# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
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#endif
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#if !defined(S_ISDIR) && defined(S_IFDIR)
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# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#endif
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#if !defined(S_ISFIFO) && defined(S_IFIFO)
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# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
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#endif
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#if !defined(S_ISLNK) && defined(S_IFLNK)
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# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
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#endif
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#if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
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# define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
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#endif
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#if !defined(S_ISMPC) && defined(S_IFMPC) /* V7 */
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# define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
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#endif
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#if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
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# define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
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#endif
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#if !defined(S_ISOFD) && defined(S_IFOFD) /* Cray */
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# define S_ISOFD(m) (((m) & S_IFMT) == S_IFOFD)
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#endif
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#if !defined(S_ISOFL) && defined(S_IFOFL) /* Cray */
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# define S_ISOFL(m) (((m) & S_IFMT) == S_IFOFL)
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#endif
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#if !defined(S_ISREG) && defined(S_IFREG)
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# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#endif
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#if !defined(S_ISSOCK) && defined(S_IFSOCK)
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# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
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#endif
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/* We will pretend to have all file types on any system. */
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#ifndef S_ISBLK
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# define S_ISBLK(m) ((void)(m), 0)
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#endif
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#ifndef S_ISCHR
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# define S_ISCHR(m) ((void)(m), 0)
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#endif
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#ifndef S_ISDIR
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# define S_ISDIR(m) ((void)(m), 0)
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#endif
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#ifndef S_ISFIFO
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# define S_ISFIFO(m) ((void)(m), 0)
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#endif
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#ifndef S_ISLNK
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# define S_ISLNK(m) ((void)(m), 0)
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#endif
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#ifndef S_ISMPB
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# define S_ISMPB(m) ((void)(m), 0)
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#endif
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#ifndef S_ISMPC
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# define S_ISMPC(m) ((void)(m), 0)
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#endif
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#ifndef S_ISNWK
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# define S_ISNWK(m) ((void)(m), 0)
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#endif
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#ifndef S_ISOFD
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# define S_ISOFD(m) ((void)(m), 0)
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#endif
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#ifndef S_ISOFL
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# define S_ISOFL(m) ((void)(m), 0)
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#endif
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#ifndef S_ISREG
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# define S_ISREG(m) ((void)(m), 0)
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#endif
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#ifndef S_ISSOCK
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# define S_ISSOCK(m) ((void)(m), 0)
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#endif
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/* file mode permission bits */
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#ifndef S_ISUID
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# define S_ISUID 04000
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#endif
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#ifndef S_ISGID
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# define S_ISGID 02000
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#endif
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#ifndef S_ISVTX
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# define S_ISVTX 01000
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#endif
|
|
#ifndef S_IRUSR
|
|
# define S_IRUSR 00400
|
|
#endif
|
|
#ifndef S_IWUSR
|
|
# define S_IWUSR 00200
|
|
#endif
|
|
#ifndef S_IXUSR
|
|
# define S_IXUSR 00100
|
|
#endif
|
|
#ifndef S_IRGRP
|
|
# define S_IRGRP 00040
|
|
#endif
|
|
#ifndef S_IWGRP
|
|
# define S_IWGRP 00020
|
|
#endif
|
|
#ifndef S_IXGRP
|
|
# define S_IXGRP 00010
|
|
#endif
|
|
#ifndef S_IROTH
|
|
# define S_IROTH 00004
|
|
#endif
|
|
#ifndef S_IWOTH
|
|
# define S_IWOTH 00002
|
|
#endif
|
|
#ifndef S_IXOTH
|
|
# define S_IXOTH 00001
|
|
#endif
|
|
#ifndef S_IRWXU
|
|
# define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
|
|
#endif
|
|
#ifndef S_IRWXG
|
|
# define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
|
|
#endif
|
|
#ifndef S_IRWXO
|
|
# define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
|
|
#endif
|
|
#ifndef S_IRUGO
|
|
# define S_IRUGO (S_IRUSR|S_IRGRP|S_IROTH)
|
|
#endif
|
|
#ifndef S_IWUGO
|
|
# define S_IWUGO (S_IWUSR|S_IWGRP|S_IWOTH)
|
|
#endif
|
|
#ifndef S_IXUGO
|
|
# define S_IXUGO (S_IXUSR|S_IXGRP|S_IXOTH)
|
|
#endif
|
|
|
|
#ifndef HAVE_LSTAT
|
|
# define lstat stat
|
|
#endif
|
|
|
|
#ifndef HAVE_READLINK
|
|
# define readlink(PATH, BUF, BUFSZ) \
|
|
((void)(PATH), (void)(BUF), (void)(BUFSZ), errno = ENOSYS, -1)
|
|
#endif
|
|
|
|
#ifndef F_OK /* missing macros for access() */
|
|
# define F_OK 0
|
|
# define X_OK 1
|
|
# define W_OK 2
|
|
# define R_OK 4
|
|
#endif
|
|
|
|
#ifndef HAVE_MEMCPY
|
|
# define memcpy memmove
|
|
#endif
|
|
|
|
#ifndef HAVE_MEMMOVE
|
|
# define memmove(dest, src, len) bcopy((src), (dest), (len))
|
|
#endif
|
|
|
|
#ifndef offsetof
|
|
# define offsetof(TYPE, MEM) ((char *)&((TYPE *)0)->MEM - (char *)(TYPE *)0)
|
|
#endif
|
|
|
|
extern char **environ;
|
|
|
|
/* These variables are sometimes defined in, *
|
|
* and needed by, the termcap library. */
|
|
#if MUST_DEFINE_OSPEED
|
|
extern char PC, *BC, *UP;
|
|
extern short ospeed;
|
|
#endif
|
|
|
|
#ifndef O_NOCTTY
|
|
# define O_NOCTTY 0
|
|
#endif
|