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 1.5 2005/02/04 21:32:55 cpressey 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(void); 50 51 int 52 main(int argc, char **argv) 53 { 54 char *p; 55 int proc = 0; 56 struct rtprio rtp; 57 58 /* find basename */ 59 if ((p = strrchr(argv[0], '/')) == NULL) 60 p = argv[0]; 61 else 62 ++p; 63 64 if (!strcmp(p, "rtprio")) 65 rtp.type = RTP_PRIO_REALTIME; 66 else if (!strcmp(p, "idprio")) 67 rtp.type = RTP_PRIO_IDLE; 68 69 switch (argc) { 70 case 2: 71 proc = abs(atoi(argv[1])); /* Should check if numeric 72 * arg! */ 73 /* FALLTHROUGH */ 74 case 1: 75 if (rtprio(RTP_LOOKUP, proc, &rtp) != 0) 76 err(1, "%s", argv[0]); 77 printf("%s: ", p); 78 switch (rtp.type) { 79 case RTP_PRIO_REALTIME: 80 case RTP_PRIO_FIFO: 81 printf("realtime priority %d\n", rtp.prio); 82 break; 83 case RTP_PRIO_NORMAL: 84 printf("normal priority\n"); 85 break; 86 case RTP_PRIO_IDLE: 87 printf("idle priority %d\n", rtp.prio); 88 break; 89 default: 90 printf("invalid priority type %d\n", rtp.type); 91 break; 92 } 93 exit(0); 94 default: 95 if (argv[1][0] == '-' || isdigit(argv[1][0])) { 96 if (argv[1][0] == '-') { 97 if (strcmp(argv[1], "-t") == 0) { 98 rtp.type = RTP_PRIO_NORMAL; 99 rtp.prio = 0; 100 } else { 101 usage(); 102 break; 103 } 104 } else { 105 rtp.prio = atoi(argv[1]); 106 } 107 } else { 108 usage(); 109 break; 110 } 111 112 if (argv[2][0] == '-') 113 proc = -atoi(argv[2]); 114 115 if (rtprio(RTP_SET, proc, &rtp) != 0) 116 err(1, "%s", argv[0]); 117 118 if (proc == 0) { 119 execvp(argv[2], &argv[2]); 120 err(1, "%s", argv[2]); 121 } 122 exit(0); 123 } 124 exit (1); 125 } 126 127 static void 128 usage(void) 129 { 130 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n", 131 "usage: [id|rt]prio", 132 " [id|rt]prio [-]pid", 133 " [id|rt]prio priority command [args]", 134 " [id|rt]prio priority -pid", 135 " [id|rt]prio -t command [args]", 136 " [id|rt]prio -t -pid"); 137 exit(1); 138 } 139