1 /* Copyright 1988,1990,1993,1994 by Paul Vixie 2 * All rights reserved 3 */ 4 5 /* 6 * Copyright (c) 1997 by Internet Software Consortium 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS 13 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES 14 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE 15 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 16 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 17 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 18 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 19 * SOFTWARE. 20 */ 21 22 23 24 #include "cron.h" 25 26 27 typedef struct _job { 28 struct _job *next; 29 entry *e; 30 user *u; 31 } job; 32 33 34 static job *jhead = NULL, *jtail = NULL; 35 36 37 void 38 job_add(entry *e, user *u) 39 { 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 = (job*) 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 63 int 64 job_runqueue(void) 65 { 66 job *j, *jn; 67 int run = 0; 68 69 for (j = jhead; j; j = jn) { 70 do_command(j->e, j->u); 71 jn = j->next; 72 free(j); 73 run++; 74 } 75 jhead = jtail = NULL; 76 return (run); 77 } 78