118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/* $NetBSD: job.c,v 1.2 2010/05/06 18:53:17 christos Exp $ */
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/* Copyright 1988,1990,1993,1994 by Paul Vixie
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* All rights reserved
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*/
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/*
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* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
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* Copyright (c) 1997,2000 by Internet Software Consortium, Inc.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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#if !defined(lint) && !defined(LINT)
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#if 0
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static char rcsid[] = "Id: job.c,v 1.6 2004/01/23 18:56:43 vixie Exp";
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#else
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__RCSID("$NetBSD: job.c,v 1.2 2010/05/06 18:53:17 christos Exp $");
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#endif
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#endif
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#include "cron.h"
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typedef struct _job {
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struct _job *next;
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entry *e;
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user *u;
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time_t t;
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} job;
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static job *jhead = NULL, *jtail = NULL;
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static int okay_to_go(job *);
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void
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job_add(entry *e, user *u, time_t target_time) {
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job *j;
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/* if already on queue, keep going */
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for (j = jhead; j != NULL; j = j->next)
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if (j->e == e && j->u == u) {
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j->t = target_time;
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return;
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}
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/* build a job queue element */
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if ((j = malloc(sizeof(*j))) == NULL)
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return;
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j->next = NULL;
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j->e = e;
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j->u = u;
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j->t = target_time;
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/* add it to the tail */
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if (jhead == NULL)
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jhead = j;
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else
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jtail->next = j;
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jtail = j;
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}
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int
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job_runqueue(void) {
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job *j, *jn;
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int run = 0;
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for (j = jhead; j; j = jn) {
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if (okay_to_go(j))
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do_command(j->e, j->u);
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else {
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char *x = mkprints(j->e->cmd, strlen(j->e->cmd));
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char *usernm = env_get("LOGNAME", j->e->envp);
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log_it(usernm, getpid(), "CMD (skipped)", x);
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free(x);
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}
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jn = j->next;
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free(j);
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run++;
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}
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jhead = jtail = NULL;
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return (run);
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}
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static int
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okay_to_go(job *j)
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{
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char *within, *t;
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long delta;
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if (j->e->flags & WHEN_REBOOT)
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return (1);
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within = env_get("CRON_WITHIN", j->e->envp);
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if (within == NULL)
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return (1);
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/* XXX handle 2m, 4h, etc? */
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errno = 0;
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delta = strtol(within, &t, 10);
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if (errno == ERANGE || *t != '\0' || delta <= 0)
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return (1);
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return ((j->t + delta) > time(NULL));
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}
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