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      1 /*	$NetBSD: macros.h,v 1.2 2010/05/06 18:53:17 christos Exp $	*/
      2 
      3 /*
      4  * Id: macros.h,v 1.9 2004/01/23 18:56:43 vixie Exp
      5  */
      6 
      7 /*
      8  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
      9  * Copyright (c) 1997,2000 by Internet Software Consortium, Inc.
     10  *
     11  * Permission to use, copy, modify, and distribute this software for any
     12  * purpose with or without fee is hereby granted, provided that the above
     13  * copyright notice and this permission notice appear in all copies.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
     16  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     17  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
     18  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     19  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     20  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
     21  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     22  */
     23 
     24 	/* these are really immutable, and are
     25 	 *   defined for symbolic convenience only
     26 	 * TRUE, FALSE, and ERR must be distinct
     27 	 * ERR must be < OK.
     28 	 */
     29 #define TRUE		1
     30 #define FALSE		0
     31 	/* system calls return this on success */
     32 #define OK		0
     33 	/*   or this on error */
     34 #define ERR		(-1)
     35 
     36 	/* turn this on to get '-x' code */
     37 #ifndef DEBUGGING
     38 #define DEBUGGING	FALSE
     39 #endif
     40 
     41 #define	INIT_PID	1	/* parent of orphans */
     42 #define READ_PIPE	0	/* which end of a pipe pair do you read? */
     43 #define WRITE_PIPE	1	/*   or write to? */
     44 #define STDIN		0	/* what is stdin's file descriptor? */
     45 #define STDOUT		1	/*   stdout's? */
     46 #define STDERR		2	/*   stderr's? */
     47 #define ERROR_EXIT	1	/* exit() with this will scare the shell */
     48 #define	OK_EXIT		0	/* exit() with this is considered 'normal' */
     49 #define	MAX_FNAME	100	/* max length of internally generated fn */
     50 #define	MAX_COMMAND	1000	/* max length of internally generated cmd */
     51 #define	MAX_ENVSTR	1000	/* max length of envvar=value\0 strings */
     52 #define	MAX_TEMPSTR	100	/* obvious */
     53 #define	MAX_UNAME	33	/* max length of username, should be overkill */
     54 #define	ROOT_UID	0	/* don't change this, it really must be root */
     55 #define	ROOT_USER	"root"	/* ditto */
     56 
     57 				/* NOTE: these correspond to DebugFlagNames,
     58 				 *	defined below.
     59 				 */
     60 #define	DEXT		0x0001	/* extend flag for other debug masks */
     61 #define	DSCH		0x0002	/* scheduling debug mask */
     62 #define	DPROC		0x0004	/* process control debug mask */
     63 #define	DPARS		0x0008	/* parsing debug mask */
     64 #define	DLOAD		0x0010	/* database loading debug mask */
     65 #define	DMISC		0x0020	/* misc debug mask */
     66 #define	DTEST		0x0040	/* test mode: don't execute any commands */
     67 
     68 #define	PPC_NULL	((const char **)NULL)
     69 
     70 #ifndef MAXHOSTNAMELEN
     71 #define MAXHOSTNAMELEN 64
     72 #endif
     73 
     74 #define	Skip_Blanks(c, f) \
     75 			while (c == '\t' || c == ' ') \
     76 				c = get_char(f)
     77 
     78 #define	Skip_Nonblanks(c, f) \
     79 			while (c!='\t' && c!=' ' && c!='\n' && c != EOF) \
     80 				c = get_char(f)
     81 
     82 #if DEBUGGING
     83 # define Debug(mask, message) \
     84 			if ((DebugFlags & (mask)) != 0) \
     85 				printf message
     86 #else /* !DEBUGGING */
     87 # define Debug(mask, message) do {} while (/*CONSTCOND*/0)
     88 #endif /* DEBUGGING */
     89 
     90 #define	Set_LineNum(ln)	do { \
     91 	Debug(DPARS|DEXT,("linenum=%d\n", ln)); \
     92 	LineNumber = ln; \
     93 } while (/*CONSTCOND*/0)
     94 
     95 #ifdef HAVE_TM_GMTOFF
     96 #define	get_gmtoff(c, t)	((t)->tm_gmtoff)
     97 #endif
     98 
     99 #define	SECONDS_PER_MINUTE	60
    100 #define	SECONDS_PER_HOUR	3600
    101 
    102 #define	FIRST_MINUTE	0
    103 #define	LAST_MINUTE	59
    104 #define	MINUTE_COUNT	(LAST_MINUTE - FIRST_MINUTE + 1)
    105 
    106 #define	FIRST_HOUR	0
    107 #define	LAST_HOUR	23
    108 #define	HOUR_COUNT	(LAST_HOUR - FIRST_HOUR + 1)
    109 
    110 #define	FIRST_DOM	1
    111 #define	LAST_DOM	31
    112 #define	DOM_COUNT	(LAST_DOM - FIRST_DOM + 1)
    113 
    114 #define	FIRST_MONTH	1
    115 #define	LAST_MONTH	12
    116 #define	MONTH_COUNT	(LAST_MONTH - FIRST_MONTH + 1)
    117 
    118 /* note on DOW: 0 and 7 are both Sunday, for compatibility reasons. */
    119 #define	FIRST_DOW	0
    120 #define	LAST_DOW	7
    121 #define	DOW_COUNT	(LAST_DOW - FIRST_DOW + 1)
    122 
    123 /*
    124  * Because crontab/at files may be owned by their respective users we
    125  * take extreme care in opening them.  If the OS lacks the O_NOFOLLOW
    126  * we will just have to live without it.  In order for this to be an
    127  * issue an attacker would have to subvert group CRON_GROUP.
    128  */
    129 #ifndef O_NOFOLLOW
    130 #define O_NOFOLLOW	0
    131 #endif
    132