92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
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/*
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* Definitions for cron
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* Inspired by vixie's cron by Paul Vixie which is
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* Copyright 1988,1990,1993,1994 by Paul Vixie
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*
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* Distribute freely, except: don't remove my name from the source or
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* documentation (don't take credit for my work), mark your changes (don't
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* get me blamed for your possible bugs), don't alter or remove this
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* notice. May be sold if buildable source is provided to buyer. No
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* warrantee of any kind, express or implied, is included with this
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* software; use at your own risk, responsibility for damages (if any) to
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* anyone resulting from the use of this software rests entirely with the
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* user.
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* Changes to make this work on a microcontroller by Ralf Schlatterbeck
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* In fact this is mostly a rewrite but keeps central algorithms of the
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* original.
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* Copyright 2016 Ralf Schlatterbeck, distribute with the conditions
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* given above.
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*/
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#ifndef _cron_h_
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#define _cron_h_
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#include "bitstring.h"
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#define SECONDS_PER_MINUTE 60
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#define FIRST_MINUTE 0
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#define LAST_MINUTE 59
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#define MINUTE_COUNT (LAST_MINUTE - FIRST_MINUTE + 1)
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#define FIRST_HOUR 0
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#define LAST_HOUR 23
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#define HOUR_COUNT (LAST_HOUR - FIRST_HOUR + 1)
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#define FIRST_DOM 1
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#define LAST_DOM 31
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#define DOM_COUNT (LAST_DOM - FIRST_DOM + 1)
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#define FIRST_MONTH 1
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#define LAST_MONTH 12
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#define MONTH_COUNT (LAST_MONTH - FIRST_MONTH + 1)
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/* note on DOW: 0 and 7 are both Sunday, for compatibility reasons. */
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#define FIRST_DOW 0
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#define LAST_DOW 7
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#define DOW_COUNT (LAST_DOW - FIRST_DOW + 1)
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#ifndef MAX_CRON_ENTRIES
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#define MAX_CRON_ENTRIES 5
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#endif
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#ifndef MAX_CRON_COMMANDS
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#define MAX_CRON_COMMANDS 5
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#endif
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struct cron_cmd {
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const char *name;
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void (*function)(void *);
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void *parameter;
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};
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struct cron_entry {
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struct cron_entry *next;
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struct cron_cmd *cmd;
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bitstr_t bit_decl(minute, MINUTE_COUNT);
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bitstr_t bit_decl(hour, HOUR_COUNT);
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bitstr_t bit_decl(dom, DOM_COUNT);
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bitstr_t bit_decl(month, MONTH_COUNT);
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bitstr_t bit_decl(dow, DOW_COUNT);
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int flags;
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#define DOM_STAR 0x01
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#define DOW_STAR 0x02
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#define WHEN_REBOOT 0x04
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#define MIN_STAR 0x08
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#define HR_STAR 0x10
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#define VALID 0x20
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};
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extern int parse_crontab_line
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(const char *line, struct cron_entry *e, const char **err);
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extern int cron_register_command
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(const char *name, void (*function)(void *), void * parameter);
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extern struct cron_entry *allocate_cron_entry (void);
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extern struct cron_entry *get_cron_entry (size_t idx);
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extern void free_cron_entry (struct cron_entry *e);
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extern void cron (void);
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#endif /* _cron_h_ */
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