1 /* $OpenBSD: job.c,v 1.8 2009/10/27 23:59:51 deraadt Exp $ */ 2 3 /* Copyright 1988,1990,1993,1994 by Paul Vixie 4 * All rights reserved 5 */ 6 7 /* 8 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 9 * Copyright (c) 1997,2000 by Internet Software Consortium, Inc. 10 * 11 * Permission to use, copy, modify, and distribute this software for any 12 * purpose with or without fee is hereby granted, provided that the above 13 * copyright notice and this permission notice appear in all copies. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 16 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 17 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 18 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 19 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 20 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 21 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 22 */ 23 24 #include "cron.h" 25 26 typedef struct _job { 27 struct _job *next; 28 entry *e; 29 user *u; 30 } job; 31 32 static job *jhead = NULL, *jtail = NULL; 33 34 void 35 job_add(entry *e, user *u) { 36 job *j; 37 38 /* if already on queue, keep going */ 39 for (j = jhead; j != NULL; j = j->next) 40 if (j->e == e && j->u == u) 41 return; 42 43 /* build a job queue element */ 44 if ((j = (job *)malloc(sizeof(job))) == NULL) 45 return; 46 j->next = NULL; 47 j->e = e; 48 j->u = u; 49 50 /* add it to the tail */ 51 if (jhead == NULL) 52 jhead = j; 53 else 54 jtail->next = j; 55 jtail = j; 56 } 57 58 int 59 job_runqueue(void) { 60 job *j, *jn; 61 int run = 0; 62 63 for (j = jhead; j; j = jn) { 64 do_command(j->e, j->u); 65 jn = j->next; 66 free(j); 67 run++; 68 } 69 jhead = jtail = NULL; 70 return (run); 71 } 72