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 35 #ifndef lint 36 static const char rcsid[] = 37 "$FreeBSD: src/usr.sbin/rtprio/rtprio.c,v 1.8.2.1 2001/01/29 08:07:26 kuriyama Exp $"; 38 #endif /* not lint */ 39 40 #include <sys/param.h> 41 #include <sys/rtprio.h> 42 #include <sys/errno.h> 43 44 #include <ctype.h> 45 #include <err.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <unistd.h> 50 51 static void usage(); 52 53 int 54 main(argc, argv) 55 int argc; 56 char **argv; 57 { 58 char *p; 59 int proc = 0; 60 struct rtprio rtp; 61 62 /* find basename */ 63 if ((p = rindex(argv[0], '/')) == NULL) 64 p = argv[0]; 65 else 66 ++p; 67 68 if (!strcmp(p, "rtprio")) 69 rtp.type = RTP_PRIO_REALTIME; 70 else if (!strcmp(p, "idprio")) 71 rtp.type = RTP_PRIO_IDLE; 72 73 switch (argc) { 74 case 2: 75 proc = abs(atoi(argv[1])); /* Should check if numeric 76 * arg! */ 77 /* FALLTHROUGH */ 78 case 1: 79 if (rtprio(RTP_LOOKUP, proc, &rtp) != 0) 80 err(1, "%s", argv[0]); 81 printf("%s: ", p); 82 switch (rtp.type) { 83 case RTP_PRIO_REALTIME: 84 case RTP_PRIO_FIFO: 85 printf("realtime priority %d\n", rtp.prio); 86 break; 87 case RTP_PRIO_NORMAL: 88 printf("normal priority\n"); 89 break; 90 case RTP_PRIO_IDLE: 91 printf("idle priority %d\n", rtp.prio); 92 break; 93 default: 94 printf("invalid priority type %d\n", rtp.type); 95 break; 96 } 97 exit(0); 98 default: 99 if (argv[1][0] == '-' || isdigit(argv[1][0])) { 100 if (argv[1][0] == '-') { 101 if (strcmp(argv[1], "-t") == 0) { 102 rtp.type = RTP_PRIO_NORMAL; 103 rtp.prio = 0; 104 } else { 105 usage(); 106 break; 107 } 108 } else { 109 rtp.prio = atoi(argv[1]); 110 } 111 } else { 112 usage(); 113 break; 114 } 115 116 if (argv[2][0] == '-') 117 proc = -atoi(argv[2]); 118 119 if (rtprio(RTP_SET, proc, &rtp) != 0) 120 err(1, "%s", argv[0]); 121 122 if (proc == 0) { 123 execvp(argv[2], &argv[2]); 124 err(1, "%s", argv[2]); 125 } 126 exit(0); 127 } 128 exit (1); 129 } 130 131 static void 132 usage() 133 { 134 (void) fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n", 135 "usage: [id|rt]prio", 136 " [id|rt]prio [-]pid", 137 " [id|rt]prio priority command [args]", 138 " [id|rt]prio priority -pid", 139 " [id|rt]prio -t command [args]", 140 " [id|rt]prio -t -pid"); 141 exit(1); 142 } 143