minix/nbsd_include/sys/syslimits.h
2011-02-21 13:13:55 +00:00

72 lines
2.6 KiB
C

#ifndef _SYS_SYSLIMITS_H_
#define _SYS_SYSLIMITS_H_
#include <minix/limits.h>
#include <sys/featuretest.h>
/* Values actually implemented by MINIX (Tables 2-4, 2-5, 2-6, and 2-7). */
/* Some of these old names had better be defined when not POSIX. */
#define _NO_LIMIT 160 /* arbitrary number; limit not enforced */
#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
defined(_NETBSD_SOURCE)
#if _EM_WSIZE > 2
#define ARG_MAX 262144 /* # bytes of args + environ for exec() */
#else
#define ARG_MAX 4096 /* args + environ on small machines */
#endif
#ifndef CHILD_MAX
#define CHILD_MAX _NO_LIMIT /* max simultaneous processes */
#endif
#define GID_MAX CHAR_MAX /* max value for a gid_t */
#define LINK_MAX SHRT_MAX /* # links a file may have */
#define MAX_CANON 255 /* size of the canonical input queue */
#define MAX_INPUT 255 /* size of the type-ahead buffer */
#define NAME_MAX 60 /* # chars in a file name (actually DIRSZ) */
#define NGROUPS_MAX 8 /* max. number of supplemental groups */
#define UID_MAX SHRT_MAX /* max value for a uid_t */
#ifndef OPEN_MAX
#define OPEN_MAX __MINIX_OPEN_MAX /* max open files per process */
#endif
#define PATH_MAX __MINIX_PATH_MAX /* # chars in a path name */
#define PIPE_BUF 7168 /* # bytes in atomic write to a pipe */
#define BC_BASE_MAX INT_MAX /* max ibase/obase values in bc(1) */
#define BC_DIM_MAX 65535 /* max array elements in bc(1) */
#define BC_SCALE_MAX INT_MAX /* max scale value in bc(1) */
#define BC_STRING_MAX INT_MAX /* max const string length in bc(1) */
#define COLL_WEIGHTS_MAX 2 /* max weights for order keyword */
#define EXPR_NEST_MAX 32 /* max expressions nested in expr(1) */
#define LINE_MAX 2048 /* max bytes in an input line */
#define RE_DUP_MAX 255 /* max RE's in interval notation */
/*
* IEEE Std 1003.1c-95, adopted in X/Open CAE Specification Issue 5 Version 2
*/
#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
defined(_NETBSD_SOURCE)
#define LOGIN_NAME_MAX 17 /* max login name length incl. NUL */
#endif
/*
* X/Open CAE Specification Issue 5 Version 2
*/
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
#define IOV_MAX 1024 /* max # of iovec's for readv(2) etc. */
#define NZERO 20 /* default "nice" */
#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
#endif /* !_ANSI_SOURCE */
#ifdef __minix
#define STREAM_MAX 8 /* == _POSIX_STREAM_MAX */
#define TZNAME_MAX 6 /* == _POSIX_TZNAME_MAX */
#define TIME_MAX LONG_MAX
#endif
#endif /* !_SYS_SYSLIMITS_H_ */