| 1 | /* tab.h - in-core crontab data Author: Kees J. Bot
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| 2 | * 7 Dec 1996
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| 3 | */
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| 4 | #ifndef TAB__H
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| 5 | #define TAB__H
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| 6 |
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| 7 | #include <sys/types.h>
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| 8 | #include <limits.h>
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| 9 |
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| 10 | struct crontab;
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| 11 |
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| 12 | typedef unsigned char bitmap_t[8];
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| 13 |
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| 14 | typedef struct cronjob { /* One entry in a crontab file */
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| 15 | struct cronjob *next;
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| 16 | struct crontab *tab; /* Associated table file. */
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| 17 | bitmap_t min; /* Minute (0-59) */
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| 18 | bitmap_t hour; /* Hour (0-23) */
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| 19 | bitmap_t mday; /* Day of the month (1-31) */
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| 20 | bitmap_t mon; /* Month (1-12) */
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| 21 | bitmap_t wday; /* Weekday (0-7 with 0 = 7 = Sunday) */
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| 22 | char *user; /* User to run it as (nil = root) */
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| 23 | char *cmd; /* Command to run */
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| 24 | time_t rtime; /* When next to run */
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| 25 | char do_mday; /* True iff mon or mday is not '*' */
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| 26 | char do_wday; /* True iff wday is not '*' */
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| 27 | char late; /* True iff the job is late */
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| 28 | char atjob; /* True iff it is an AT job */
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| 29 | pid_t pid; /* Process-id of job if nonzero */
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| 30 | } cronjob_t;
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| 31 |
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| 32 | typedef struct crontab {
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| 33 | struct crontab *next;
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| 34 | char *file; /* Crontab name */
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| 35 | char *user; /* Owner if non-null */
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| 36 | time_t mtime; /* Last modified time */
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| 37 | cronjob_t *jobs; /* List of jobs in the file */
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| 38 | char *data; /* File data */
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| 39 | int current; /* True if current, i.e. file exists */
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| 40 | } crontab_t;
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| 41 |
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| 42 | crontab_t *crontabs; /* All crontabs. */
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| 43 |
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| 44 | /* A time as far in the future as possible. */
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| 45 | #define NEVER ((time_t) ((time_t) -1 < 0 ? LONG_MAX : ULONG_MAX))
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| 46 |
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| 47 | /* Don't trust crontabs bigger than this: */
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| 48 | #define TAB_MAX ((sizeof(int) == 2 ? 8 : 128) * 1024)
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| 49 |
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| 50 | /* Pid if no process running, or a pid value you'll never see. */
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| 51 | #define IDLE_PID ((pid_t) 0)
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| 52 | #define NO_PID ((pid_t) -1)
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| 53 |
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| 54 | /* Bitmap operations. */
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| 55 | #define bit_set(map, n) ((void) ((map)[(n) >> 3] |= (1 << ((n) & 7))))
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| 56 | #define bit_clr(map, n) ((void) ((map)[(n) >> 3] &= ~(1 << ((n) & 7))))
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| 57 | #define bit_isset(map, n) (!!((map)[(n) >> 3] & (1 << ((n) & 7))))
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| 58 |
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| 59 | /* Functions. */
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| 60 | void tab_parse(char *file, char *user);
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| 61 | void tab_find_atjob(char *atdir);
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| 62 | void tab_purge(void);
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| 63 | void tab_reap_job(pid_t pid);
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| 64 | void tab_reschedule(cronjob_t *job);
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| 65 | cronjob_t *tab_nextjob(void);
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| 66 | void tab_print(FILE *fp);
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| 67 |
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| 68 | #endif /* TAB__H */
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| 69 |
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| 70 | /*
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| 71 | * $PchId: tab.h,v 1.3 2000/07/17 07:57:27 philip Exp $
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| 72 | */
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