73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/* tab.h - in-core crontab data Author: Kees J. Bot
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* 7 Dec 1996
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*/
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#ifndef TAB__H
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#define TAB__H
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#include <sys/types.h>
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#include <limits.h>
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struct crontab;
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typedef unsigned char bitmap_t[8];
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typedef struct cronjob { /* One entry in a crontab file */
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struct cronjob *next;
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struct crontab *tab; /* Associated table file. */
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bitmap_t min; /* Minute (0-59) */
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bitmap_t hour; /* Hour (0-23) */
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bitmap_t mday; /* Day of the month (1-31) */
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bitmap_t mon; /* Month (1-12) */
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bitmap_t wday; /* Weekday (0-7 with 0 = 7 = Sunday) */
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char *user; /* User to run it as (nil = root) */
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char *cmd; /* Command to run */
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time_t rtime; /* When next to run */
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char do_mday; /* True iff mon or mday is not '*' */
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char do_wday; /* True iff wday is not '*' */
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char late; /* True iff the job is late */
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char atjob; /* True iff it is an AT job */
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pid_t pid; /* Process-id of job if nonzero */
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} cronjob_t;
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typedef struct crontab {
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struct crontab *next;
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char *file; /* Crontab name */
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char *user; /* Owner if non-null */
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time_t mtime; /* Last modified time */
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cronjob_t *jobs; /* List of jobs in the file */
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char *data; /* File data */
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int current; /* True if current, i.e. file exists */
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} crontab_t;
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crontab_t *crontabs; /* All crontabs. */
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/* A time as far in the future as possible. */
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#define NEVER ((time_t) ((time_t) -1 < 0 ? LONG_MAX : ULONG_MAX))
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/* Don't trust crontabs bigger than this: */
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#define TAB_MAX ((sizeof(int) == 2 ? 8 : 128) * 1024)
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/* Pid if no process running, or a pid value you'll never see. */
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#define IDLE_PID ((pid_t) 0)
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#define NO_PID ((pid_t) -1)
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/* Bitmap operations. */
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#define bit_set(map, n) ((void) ((map)[(n) >> 3] |= (1 << ((n) & 7))))
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#define bit_clr(map, n) ((void) ((map)[(n) >> 3] &= ~(1 << ((n) & 7))))
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#define bit_isset(map, n) (!!((map)[(n) >> 3] & (1 << ((n) & 7))))
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/* Functions. */
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void tab_parse(char *file, char *user);
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void tab_find_atjob(char *atdir);
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void tab_purge(void);
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void tab_reap_job(pid_t pid);
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void tab_reschedule(cronjob_t *job);
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cronjob_t *tab_nextjob(void);
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void tab_print(FILE *fp);
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#endif /* TAB__H */
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/*
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* $PchId: tab.h,v 1.3 2000/07/17 07:57:27 philip Exp $
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*/
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