xnu-1504.9.17.tar.gz

[apple/xnu.git] / bsd / sys / syslimits.h

diff --git a/bsd/sys/syslimits.h b/bsd/sys/syslimits.h
index 54f538e54fcb262d64afadd733e2d3eb96b70ccb..a020b3919808010f8365507d350f0b839387c152 100644 (file)
--- a/bsd/sys/syslimits.h
+++ b/bsd/sys/syslimits.h
@@ -1,16 +1,19 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*     $NetBSD: syslimits.h,v 1.15 1997/06/25 00:48:09 lukem Exp $     */
 
@@ -62,29 +65,53 @@
 #ifndef _SYS_SYSLIMITS_H_
 #define _SYS_SYSLIMITS_H_
 
+#include <sys/cdefs.h>
+
 #if !defined(_ANSI_SOURCE)
-#define        ARG_MAX            (64 * 1024)  /* max bytes for an exec function */
-#define        CHILD_MAX                  100  /* max simultaneous processes */
+/*
+ * Note: CHILD_MAX *must* be less than hard_maxproc, which is set at
+ * compile time; you *cannot* set it higher than the hard limit!!
+ */
+#define        ARG_MAX            (256 * 1024) /* max bytes for an exec function */
+#define        CHILD_MAX                  266  /* max simultaneous processes */
+#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 #define        GID_MAX            2147483647U  /* max value for a gid_t (2^31-2) */
+#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 #define        LINK_MAX                32767   /* max file link count */
-#define        MAX_CANON                 255   /* max bytes in term canon input line */
-#define        MAX_INPUT                 255   /* max bytes in terminal input */
+#define        MAX_CANON                1024   /* max bytes in term canon input line */
+#define        MAX_INPUT                1024   /* max bytes in terminal input */
 #define        NAME_MAX                  255   /* max bytes in a file name */
 #define        NGROUPS_MAX                16   /* max supplemental group id's */
+#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 #define        UID_MAX            2147483647U  /* max value for a uid_t (2^31-2) */
-#define        OPEN_MAX                10240   /* max open files per process */
+
+#define        OPEN_MAX                10240   /* max open files per process - todo, make a config option? */
+
+#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 #define        PATH_MAX                 1024   /* max bytes in pathname */
 #define        PIPE_BUF                  512   /* max bytes for atomic pipe writes */
 
-#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        BC_BASE_MAX                99   /* max ibase/obase values in bc(1) */
+#define        BC_DIM_MAX               2048   /* max array elements in bc(1) */
+#define        BC_SCALE_MAX               99   /* max scale value in bc(1) */
+#define        BC_STRING_MAX            1000   /* max const string length in bc(1) */
+#define        CHARCLASS_NAME_MAX         14   /* max character class name size */
 #define        COLL_WEIGHTS_MAX            2   /* max weights for order keyword */
 #define        EQUIV_CLASS_MAX             2
 #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 */
+
+#if __DARWIN_UNIX03
+#define        NZERO                      20   /* default priority [XSI] */
+                                       /* = ((PRIO_MAX - PRIO_MIN) / 2) + 1 */
+                                       /* range: 0 - 39 [(2 * NZERO) - 1] */
+                                       /* 0 is not actually used */
+#else /* !__DARWIN_UNIX03 */
+#define        NZERO                       0   /* default priority */
+                                       /* range: -20 - 20 */
+                                       /* (PRIO_MIN - PRIO_MAX) */
+#endif /* __DARWIN_UNIX03 */
 #endif /* !_ANSI_SOURCE */
 
 #endif /* !_SYS_SYSLIMITS_H_ */