/* Copyright 1988,1990,1993,1994 by Paul Vixie
* Distribute freely, except: don't remove my name from the source or
* documentation (don't take credit for my work), mark your changes (don't
* get me blamed for your possible bugs), don't alter or remove this
* notice. May be sold if buildable source is provided to buyer. No
* warrantee of any kind, express or implied, is included with this
* software; use at your own risk, responsibility for damages (if any) to
* anyone resulting from the use of this software rests entirely with the
* Send bug reports, bug fixes, enhancements, requests, flames, etc., and
* I'll try to keep a version up to date. I can be reached as follows:
* Paul Vixie <paul@vix.com> uunet!decwrl!vixie!paul
/* cron.h - header for vixie's cron
* From Id: cron.h,v 2.10 1994/01/15 20:43:43 vixie Exp
* vix 14nov88 [rest of log is in RCS]
* vix 14jan87 [0 or 7 can be sunday; thanks, mwm@berkeley]
/* reorder these #include's at your peril */
/* these are really immutable, and are
* defined for symbolic convenience only
* TRUE, FALSE, and ERR must be distinct
/* system calls return this on success */
/* turn this on to get '-x' code */
#define READ_PIPE 0 /* which end of a pipe pair do you read? */
#define WRITE_PIPE 1 /* or write to? */
#define STDIN 0 /* what is stdin's file descriptor? */
#define STDOUT 1 /* stdout's? */
#define STDERR 2 /* stderr's? */
#define ERROR_EXIT 1 /* exit() with this will scare the shell */
#define OK_EXIT 0 /* exit() with this is considered 'normal' */
#define MAX_FNAME 100 /* max length of internally generated fn */
#define MAX_COMMAND 1000 /* max length of internally generated cmd */
#define MAX_ENVSTR 1000 /* max length of envvar=value\0 strings */
#define MAX_TEMPSTR 100 /* obvious */
#define MAX_UNAME 20 /* max length of username, should be overkill */
#define ROOT_UID 0 /* don't change this, it really must be root */
#define ROOT_USER "root" /* ditto */
/* NOTE: these correspond to DebugFlagNames,
#define DEXT 0x0001 /* extend flag for other debug masks */
#define DSCH 0x0002 /* scheduling debug mask */
#define DPROC 0x0004 /* process control debug mask */
#define DPARS 0x0008 /* parsing debug mask */
#define DLOAD 0x0010 /* database loading debug mask */
#define DMISC 0x0020 /* misc debug mask */
#define DTEST 0x0040 /* test mode: don't execute any commands */
#define DBIT 0x0080 /* bit twiddling shown (long) */
#define CRON_TAB(u) "%s/%s", SPOOL_DIR, u
#define PPC_NULL ((char **)NULL)
#define MAXHOSTNAMELEN 64
#define Skip_Blanks(c, f) \
while (c == '\t' || c == ' ') \
#define Skip_Nonblanks(c, f) \
while (c!='\t' && c!=' ' && c!='\n' && c != EOF) \
#define Skip_Line(c, f) \
do {c = get_char(f);} while (c != '\n' && c != EOF);
# define Debug(mask, message) \
if ( (DebugFlags & (mask) ) == (mask) ) \
# define Debug(mask, message) \
#define MkLower(ch) (isupper(ch) ? tolower(ch) : ch)
#define MkUpper(ch) (islower(ch) ? toupper(ch) : ch)
#define Set_LineNum(ln) {Debug(DPARS|DEXT,("linenum=%d\n",ln)); \
#define MINUTE_COUNT (LAST_MINUTE - FIRST_MINUTE + 1)
#define HOUR_COUNT (LAST_HOUR - FIRST_HOUR + 1)
#define DOM_COUNT (LAST_DOM - FIRST_DOM + 1)
#define MONTH_COUNT (LAST_MONTH - FIRST_MONTH + 1)
/* note on DOW: 0 and 7 are both Sunday, for compatibility reasons. */
#define DOW_COUNT (LAST_DOW - FIRST_DOW + 1)
/* each user's crontab will be held as a list of
* the following structure.
* These are the cron commands.
bitstr_t
bit_decl(minute
, MINUTE_COUNT
);
bitstr_t
bit_decl(hour
, HOUR_COUNT
);
bitstr_t
bit_decl(dom
, DOM_COUNT
);
bitstr_t
bit_decl(month
, MONTH_COUNT
);
bitstr_t
bit_decl(dow
, DOW_COUNT
);
/* the crontab database will be a list of the
* following structure, one element per user
* plus one for the system.
* These are the crontabs.
struct _user
*next
, *prev
; /* links */
time_t mtime
; /* last modtime of crontab */
entry
*crontab
; /* this person's crontab */
typedef struct _cron_db
{
user
*head
, *tail
; /* links */
time_t mtime
; /* last modtime on spooldir */
void set_cron_uid
__P((void)),
set_cron_cwd
__P((void)),
load_database
__P((cron_db
*)),
open_logfile
__P((void)),
sigpipe_func
__P((void)),
job_add
__P((entry
*, user
*)),
do_command
__P((entry
*, user
*)),
link_user
__P((cron_db
*, user
*)),
unlink_user
__P((cron_db
*, user
*)),
unget_char
__P((int, FILE *)),
free_entry
__P((entry
*)),
acquire_daemonlock
__P((int)),
skip_comments
__P((FILE *)),
log_it
__P((char *, int, char *, char *)),
int job_runqueue
__P((void)),
set_debug_flags
__P((char *)),
get_string
__P((char *, int, FILE *, char *)),
load_env
__P((char *, FILE *)),
cron_pclose
__P((FILE *)),
strcmp_until
__P((char *, char *, int)),
char *env_get
__P((char *, char **)),
*arpadate
__P((time_t *)),
*mkprints
__P((unsigned char *, unsigned int)),
*first_word
__P((char *, char *)),
**env_copy
__P((char **)),
**env_set
__P((char **, char *));
user
*load_user
__P((int, struct passwd
*, char *)),
*find_user
__P((cron_db
*, char *));
entry
*load_entry
__P((FILE *, void (*)(),
struct passwd
*, char **));
FILE *cron_popen
__P((char *, char *));
/* in the C tradition, we only create
* variables for the main program, just
# if !defined(LINT) && !defined(lint)
"@(#) Copyright 1988,1989,1990,1993,1994 by Paul Vixie",
"@(#) All rights reserved"
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun",
char *DebugFlagNames
[] = { /* sync with #defines */
"ext", "sch", "proc", "pars", "load", "misc", "test", "bit",
NULL
/* NULL must be last element */
extern char *copyright
[],
extern time_t TargetTime
;
extern char *DebugFlagNames
[];