1 syslimits.h |
1 /*- |
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2 * Copyright (c) 1988, 1993 |
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3 * The Regents of the University of California. All rights reserved. |
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4 * |
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5 * Redistribution and use in source and binary forms, with or without |
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6 * modification, are permitted provided that the following conditions |
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7 * are met: |
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8 * 1. Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * 2. Redistributions in binary form must reproduce the above copyright |
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11 * notice, this list of conditions and the following disclaimer in the |
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12 * documentation and/or other materials provided with the distribution. |
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13 * 4. Neither the name of the University nor the names of its contributors |
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14 * may be used to endorse or promote products derived from this software |
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15 * without specific prior written permission. |
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16 * |
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17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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27 * SUCH DAMAGE. |
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28 * |
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29 * @(#)syslimits.h 8.1 (Berkeley) 6/2/93 |
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30 * $FreeBSD: src/sys/sys/syslimits.h,v 1.21 2005/03/02 21:33:29 joerg Exp $ |
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31 */ |
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32 |
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33 #ifndef _SYS_SYSLIMITS_H_ |
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34 #define _SYS_SYSLIMITS_H_ |
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35 |
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36 #if !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_) |
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37 #ifndef _SYS_CDEFS_H_ |
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38 #error this file needs sys/cdefs.h as a prerequisite |
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39 #endif |
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40 #ifdef __CC_SUPPORTS_WARNING |
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41 #warning "No user-serviceable parts inside." |
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42 #endif |
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43 #endif |
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44 |
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45 /* |
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46 * Do not add any new variables here. (See the comment at the end of |
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47 * the file for why.) |
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48 */ |
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49 #if defined(__arm__) || defined(__powerpc__) |
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50 #define ARG_MAX 65536 /* max bytes for an exec function */ |
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51 #else |
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52 #define ARG_MAX 262144 /* max bytes for an exec function */ |
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53 #endif |
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54 #ifndef CHILD_MAX |
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55 #define CHILD_MAX 40 /* max simultaneous processes */ |
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56 #endif |
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57 #define LINK_MAX 32767 /* max file link count */ |
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58 #define MAX_CANON 255 /* max bytes in term canon input line */ |
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59 #define MAX_INPUT 255 /* max bytes in terminal input */ |
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60 #define NAME_MAX 255 /* max bytes in a file name */ |
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61 #define NGROUPS_MAX 16 /* max supplemental group id's */ |
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62 #ifndef OPEN_MAX |
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63 #define OPEN_MAX 256 /* max open files per process */ |
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64 #endif |
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65 #ifndef __SYMBIAN32__ |
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66 #define PATH_MAX 1024 /* max bytes in pathname */ |
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67 #else |
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68 #define PATH_MAX 256 /* max bytes in pathname. In Symbian, this cant be more than 256 */ |
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69 #endif /* __SYMBIAN32__ */ |
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70 #define PIPE_BUF 512 /* max bytes for atomic pipe writes */ |
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71 #define IOV_MAX 1024 /* max elements in i/o vector */ |
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72 |
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73 /* |
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74 * We leave the following values undefined to force applications to either |
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75 * assume conservative values or call sysconf() to get the current value. |
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76 * |
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77 * HOST_NAME_MAX |
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78 * |
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79 * (We should do this for most of the values currently defined here, |
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80 * but many programs are not prepared to deal with this yet.) |
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81 */ |
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82 #endif |