1 /* 2 * Copyright (c) 1994 David Greenman 3 * Copyright (c) 1994 Henrik Vestergaard Draboel (hvd@terry.ping.dk) 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Henrik Vestergaard Draboel. 17 * This product includes software developed by David Greenman. 18 * 4. Neither the names of the authors nor the names of contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD: src/usr.sbin/rtprio/rtprio.c,v 1.8.2.1 2001/01/29 08:07:26 kuriyama Exp $ 35 * $DragonFly: src/usr.sbin/rtprio/rtprio.c,v 1.3 2004/08/30 19:27:22 eirikn Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/rtprio.h> 40 #include <sys/errno.h> 41 42 #include <ctype.h> 43 #include <err.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 49 static void usage(); 50 51 int 52 main(argc, argv) 53 int argc; 54 char **argv; 55 { 56 char *p; 57 int proc = 0; 58 struct rtprio rtp; 59 60 /* find basename */ 61 if ((p = strrchr(argv[0], '/')) == NULL) 62 p = argv[0]; 63 else 64 ++p; 65 66 if (!strcmp(p, "rtprio")) 67 rtp.type = RTP_PRIO_REALTIME; 68 else if (!strcmp(p, "idprio")) 69 rtp.type = RTP_PRIO_IDLE; 70 71 switch (argc) { 72 case 2: 73 proc = abs(atoi(argv[1])); /* Should check if numeric 74 * arg! */ 75 /* FALLTHROUGH */ 76 case 1: 77 if (rtprio(RTP_LOOKUP, proc, &rtp) != 0) 78 err(1, "%s", argv[0]); 79 printf("%s: ", p); 80 switch (rtp.type) { 81 case RTP_PRIO_REALTIME: 82 case RTP_PRIO_FIFO: 83 printf("realtime priority %d\n", rtp.prio); 84 break; 85 case RTP_PRIO_NORMAL: 86 printf("normal priority\n"); 87 break; 88 case RTP_PRIO_IDLE: 89 printf("idle priority %d\n", rtp.prio); 90 break; 91 default: 92 printf("invalid priority type %d\n", rtp.type); 93 break; 94 } 95 exit(0); 96 default: 97 if (argv[1][0] == '-' || isdigit(argv[1][0])) { 98 if (argv[1][0] == '-') { 99 if (strcmp(argv[1], "-t") == 0) { 100 rtp.type = RTP_PRIO_NORMAL; 101 rtp.prio = 0; 102 } else { 103 usage(); 104 break; 105 } 106 } else { 107 rtp.prio = atoi(argv[1]); 108 } 109 } else { 110 usage(); 111 break; 112 } 113 114 if (argv[2][0] == '-') 115 proc = -atoi(argv[2]); 116 117 if (rtprio(RTP_SET, proc, &rtp) != 0) 118 err(1, "%s", argv[0]); 119 120 if (proc == 0) { 121 execvp(argv[2], &argv[2]); 122 err(1, "%s", argv[2]); 123 } 124 exit(0); 125 } 126 exit (1); 127 } 128 129 static void 130 usage() 131 { 132 (void) fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n", 133 "usage: [id|rt]prio", 134 " [id|rt]prio [-]pid", 135 " [id|rt]prio priority command [args]", 136 " [id|rt]prio priority -pid", 137 " [id|rt]prio -t command [args]", 138 " [id|rt]prio -t -pid"); 139 exit(1); 140 } 141