316 lines
8.1 KiB
C
316 lines
8.1 KiB
C
/* limits.h
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Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _LIMITS_H___
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#include <features.h>
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#ifndef _MACH_MACHLIMITS_H_
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/* _MACH_MACHLIMITS_H_ is used on OSF/1. */
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#define _LIMITS_H___
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#define _MACH_MACHLIMITS_H_
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/* Numerical limits */
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/* Number of bits in a `char'. */
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#undef CHAR_BIT
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#define CHAR_BIT 8
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/* Maximum length of a multibyte character. */
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#ifndef MB_LEN_MAX
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#define MB_LEN_MAX 1
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#endif
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/* Minimum and maximum values a `signed char' can hold. */
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#undef SCHAR_MIN
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#define SCHAR_MIN (-128)
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#undef SCHAR_MAX
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#define SCHAR_MAX 127
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/* Maximum value an `unsigned char' can hold. (Minimum is 0). */
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#undef UCHAR_MAX
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#define UCHAR_MAX 255
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/* Minimum and maximum values a `char' can hold. */
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#ifdef __CHAR_UNSIGNED__
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#undef CHAR_MIN
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#define CHAR_MIN 0
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#undef CHAR_MAX
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#define CHAR_MAX 255
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#else
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#undef CHAR_MIN
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#define CHAR_MIN (-128)
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#undef CHAR_MAX
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#define CHAR_MAX 127
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#endif
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/* Minimum and maximum values a `signed short int' can hold. */
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#undef SHRT_MIN
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#define SHRT_MIN (-32768)
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#undef SHRT_MAX
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#define SHRT_MAX 32767
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/* Maximum value an `unsigned short int' can hold. (Minimum is 0). */
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#undef USHRT_MAX
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#define USHRT_MAX 65535
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/* Minimum and maximum values a `signed int' can hold. */
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#ifndef __INT_MAX__
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#define __INT_MAX__ 2147483647
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#endif
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#undef INT_MIN
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#define INT_MIN (-INT_MAX-1)
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#undef INT_MAX
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#define INT_MAX __INT_MAX__
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/* Maximum value an `unsigned int' can hold. (Minimum is 0). */
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#undef UINT_MAX
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#define UINT_MAX (INT_MAX * 2U + 1)
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/* Minimum and maximum values a `signed long int' can hold.
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(Same as `int'). */
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#ifndef __LONG_MAX__
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#ifndef __alpha__
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#define __LONG_MAX__ 2147483647L
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#else
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#define __LONG_MAX__ 9223372036854775807L
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# endif /* __alpha__ */
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#endif
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#undef LONG_MIN
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#define LONG_MIN (-LONG_MAX-1)
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#undef LONG_MAX
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#define LONG_MAX __LONG_MAX__
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/* Maximum value an `unsigned long int' can hold. (Minimum is 0). */
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#undef ULONG_MAX
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#define ULONG_MAX (LONG_MAX * 2UL + 1)
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/* Minimum and maximum values a `signed long long int' can hold. */
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#ifndef __LONG_LONG_MAX__
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#define __LONG_LONG_MAX__ 9223372036854775807LL
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#endif
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#if defined (__GNU_LIBRARY__) ? defined (__USE_GNU) : !defined (__STRICT_ANSI__)
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#undef LONG_LONG_MIN
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#define LONG_LONG_MIN (-LONG_LONG_MAX-1)
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#undef LONG_LONG_MAX
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#define LONG_LONG_MAX __LONG_LONG_MAX__
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/* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */
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#undef ULONG_LONG_MAX
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#define ULONG_LONG_MAX (LONG_LONG_MAX * 2ULL + 1)
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#endif
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/* Minimum and maximum values a `signed long long int' can hold. */
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#undef LLONG_MIN
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#define LLONG_MIN (-LLONG_MAX-1)
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#undef LLONG_MAX
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#define LLONG_MAX __LONG_LONG_MAX__
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/* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */
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#undef ULLONG_MAX
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#define ULLONG_MAX (LLONG_MAX * 2ULL + 1)
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/* Maximum size of ssize_t */
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#undef SSIZE_MAX
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#define SSIZE_MAX (__LONG_MAX__)
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/* Runtime Invariant Values */
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/* Maximum number of bytes in arguments and environment passed in an exec
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call. 32000 is the safe value used for Windows processes when called
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from Cygwin processes. */
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#undef ARG_MAX
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#define ARG_MAX 32000
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/* Maximum number of simultaneous processes per real user ID. */
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#undef CHILD_MAX
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#define CHILD_MAX 256
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/* Maximum length of a host name. */
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#undef HOST_NAME_MAX
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#define HOST_NAME_MAX 255
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/* Maximum number of iovcnt in a writev (an arbitrary number) */
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#undef IOV_MAX
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#define IOV_MAX 1024
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/* Maximum number of characters in a login name. */
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#undef LOGIN_NAME_MAX
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#define LOGIN_NAME_MAX 256 /* equal to UNLEN defined in w32api/lmcons.h */
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/* # of open files per process. Actually it can be more since Cygwin
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grows the dtable as necessary. We define a reasonable limit here
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which is returned by getdtablesize(), sysconf(_SC_OPEN_MAX) and
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getrlimit(RLIMIT_NOFILE). */
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#undef OPEN_MAX
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#define OPEN_MAX 256
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/* Size in bytes of a page. */
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#undef PAGESIZE
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#undef PAGE_SIZE
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#define PAGESIZE 65536
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#define PAGE_SIZE PAGESIZE
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/* Maximum number of realtime signals reserved for application use. */
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/* FIXME: We only support one realtime signal but _POSIX_RTSIG_MAX is 8. */
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#undef RTSIG_MAX
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#define RTSIG_MAX 1
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/* Number of streams that one process can have open at one time. */
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#undef STREAM_MAX
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#define STREAM_MAX 20
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/* Maximum number of nested symbolic links. */
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#undef SYMLOOP_MAX
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#define SYMLOOP_MAX 10
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/* Maximum number of timer expiration overruns. */
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#undef TIMER_MAX
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#define TIMER_MAX 32
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/* Maximum number of characters in a tty name. */
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#undef TTY_NAME_MAX
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#define TTY_NAME_MAX 12
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/* Pathname Variable Values */
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/* Minimum bits needed to represent the maximum size of a regular file. */
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#undef FILESIZEBITS
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#define FILESIZEBITS 64
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/* Maximum number of hardlinks to a file. */
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#undef LINK_MAX
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#define LINK_MAX 1024
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/* Maximum number of bytes in a terminal canonical input line. */
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#undef MAX_CANON
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#define MAX_CANON 255
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/* Minimum number of bytes available in a terminal input queue. */
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#undef MAX_INPUT
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#define MAX_INPUT 255
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/* Maximum length of a path component. */
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#undef NAME_MAX
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#define NAME_MAX 255
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/* Maximum length of a path */
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#undef PATH_MAX
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#define PATH_MAX 260
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/* # of bytes in a pipe buf. This is the max # of bytes which can be
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written to a pipe in one atomic operation. */
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#undef PIPE_BUF
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#define PIPE_BUF 4096
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/* Runtime Increasable Values */
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/* Maximum obase values allowed by the bc utility. */
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#undef BC_BASE_MAX
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#define BC_BASE_MAX 99
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/* Maximum number of elements permitted in an array by the bc utility. */
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#undef BC_DIM_MAX
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#define BC_DIM_MAX 2048
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/* Maximum scale value allowed by the bc utility. */
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#undef BC_SCALE_MAX
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#define BC_SCALE_MAX 99
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/* Maximum length of a string constant accepted by the bc utility. */
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#undef BC_STRING_MAX
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#define BC_STRING_MAX 1000
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/* Maximum number of weights that can be assigned to an entry of the
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LC_COLLATE order keyword in the locale definition file. */
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/* FIXME: We don't support this at all right now, so this value is
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misleading at best. It's also lower than _POSIX2_COLL_WEIGHTS_MAX
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which is not good. So, for now we deliberately not define it even
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though it was defined in the former syslimits.h file. */
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#if 0
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#undef COLL_WEIGHTS_MAX
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#define COLL_WEIGHTS_MAX 0
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#endif
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/* Maximum number of expressions that can be nested within parentheses
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by the expr utility. */
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#undef EXPR_NEST_MAX
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#define EXPR_NEST_MAX 32
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/* Maximum bytes of a text utility's input line */
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#undef LINE_MAX
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#define LINE_MAX 2048
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/* Max num groups for a user, value taken from NT documentation */
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/* Must match <sys/param.h> NGROUPS */
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#undef NGROUPS_MAX
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#define NGROUPS_MAX 16
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/* Maximum number of repeated occurrences of a regular expression when
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using the interval notation \{m,n\} */
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#undef RE_DUP_MAX
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#define RE_DUP_MAX 255
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/* Minimum Values */
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/* POSIX values */
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/* These should never vary from one system type to another */
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/* They represent the minimum values that POSIX systems must support.
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POSIX-conforming apps must not require larger values. */
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#define _POSIX_ARG_MAX 4096
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#define _POSIX_CHILD_MAX 6
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#define _POSIX_HOST_NAME_MAX 255
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#define _POSIX_LINK_MAX 8
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#define _POSIX_LOGIN_NAME_MAX 9
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#define _POSIX_MAX_CANON 255
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#define _POSIX_MAX_INPUT 255
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#define _POSIX_NAME_MAX 14
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#define _POSIX_NGROUPS_MAX 0
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#define _POSIX_OPEN_MAX 16
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#define _POSIX_PATH_MAX 255
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#define _POSIX_PIPE_BUF 512
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#define _POSIX_RE_DUP_MAX 255
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#define _POSIX_RTSIG_MAX 8
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#define _POSIX_SSIZE_MAX 32767
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#define _POSIX_STREAM_MAX 8
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#define _POSIX_SYMLINK_MAX 255
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#define _POSIX_SYMLOOP_MAX 8
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#define _POSIX_TIMER_MAX 32
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#define _POSIX_TTY_NAME_MAX 9
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#define _POSIX_TZNAME_MAX 3
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#define _POSIX2_BC_BASE_MAX 99
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#define _POSIX2_BC_DIM_MAX 2048
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#define _POSIX2_BC_SCALE_MAX 99
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#define _POSIX2_BC_STRING_MAX 1000
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#if 0 /* See comment about COLL_WEIGHTS_MAX above. */
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#define _POSIX2_COLL_WEIGHTS_MAX 2
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#endif
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#define _POSIX2_EXPR_NEST_MAX 32
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#define _POSIX2_LINE_MAX 2048
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#define _POSIX2_RE_DUP_MAX 255
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/* Other Invariant Values */
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/* Default process priority. */
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#undef NZERO
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#define NZERO 20
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#endif /* _MACH_MACHLIMITS_H_ */
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#endif /* _LIMITS_H___ */
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