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File: [local] / src / usr.sbin / cron / funcs.h (download)

Revision 1.30, Thu Apr 16 17:51:56 2020 UTC (4 years, 1 month ago) by millert
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, OPENBSD_7_4_BASE, OPENBSD_7_4, OPENBSD_7_3_BASE, OPENBSD_7_3, OPENBSD_7_2_BASE, OPENBSD_7_2, OPENBSD_7_1_BASE, OPENBSD_7_1, OPENBSD_7_0_BASE, OPENBSD_7_0, OPENBSD_6_9_BASE, OPENBSD_6_9, OPENBSD_6_8_BASE, OPENBSD_6_8, OPENBSD_6_7_BASE, OPENBSD_6_7, HEAD
Changes since 1.29: +5 -2 lines

Add a mechanism to prevent cron jobs from running concurrently.
This adds a new "-s" flag to the command field which indicates that
only a single instance of the job should run concurrenty.
OK beck@ job@ deraadt@

/*	$OpenBSD: funcs.h,v 1.30 2020/04/16 17:51:56 millert Exp $	*/

/*
 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
 * Copyright (c) 1997,2000 by Internet Software Consortium, Inc.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* Notes:
 *	This file has to be included by cron.h after data structure defs.
 *	We should reorg this into sections by module.
 */

void		load_database(cron_db **),
		job_add(entry *, user *),
		job_remove(entry *, user *),
		job_exit(pid_t),
		free_user(user *),
		env_free(char **),
		unget_char(int, FILE *),
		free_entry(entry *),
		skip_comments(FILE *),
		poke_daemon(unsigned char),
		atrun(at_db *, double, time_t);

pid_t		do_command(entry *, user *);

int		job_runqueue(void),
		get_char(FILE *),
		get_string(char *, int, FILE *, char *),
		load_env(char *, FILE *),
		cron_pclose(FILE *, pid_t),
		allowed(const char *, const char *, const char *),
		safe_p(const char *, const char *),
		scan_atjobs(at_db **, struct timespec *);

char		*env_get(char *, char **),
		*first_word(char *, char *),
		**env_init(void),
		**env_copy(char **),
		**env_set(char **, char *);

user		*load_user(FILE *, struct passwd *, const char *),
		*find_user(cron_db *, const char *);

entry		*load_entry(FILE *,
		    void (*)(const char *), struct passwd *, char **);

FILE		*cron_popen(char *, char *, struct passwd *, pid_t *);