1 /* $OpenBSD: job.c,v 1.7 2004/06/17 22:11:55 millert 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 #if !defined(lint) && !defined(LINT) 25 static char const rcsid[] = "$OpenBSD: job.c,v 1.7 2004/06/17 22:11:55 millert Exp $"; 26 #endif 27 28 #include "cron.h" 29 30 typedef struct _job { 31 struct _job *next; 32 entry *e; 33 user *u; 34 } job; 35 36 static job *jhead = NULL, *jtail = NULL; 37 38 void 39 job_add(entry *e, user *u) { 40 job *j; 41 42 /* if already on queue, keep going */ 43 for (j = jhead; j != NULL; j = j->next) 44 if (j->e == e && j->u == u) 45 return; 46 47 /* build a job queue element */ 48 if ((j = (job *)malloc(sizeof(job))) == NULL) 49 return; 50 j->next = NULL; 51 j->e = e; 52 j->u = u; 53 54 /* add it to the tail */ 55 if (jhead == NULL) 56 jhead = j; 57 else 58 jtail->next = j; 59 jtail = j; 60 } 61 62 int 63 job_runqueue(void) { 64 job *j, *jn; 65 int run = 0; 66 67 for (j = jhead; j; j = jn) { 68 do_command(j->e, j->u); 69 jn = j->next; 70 free(j); 71 run++; 72 } 73 jhead = jtail = NULL; 74 return (run); 75 } 76