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 * $Id$ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/rtprio.h> 39 #include <sys/errno.h> 40 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <ctype.h> 45 #include <unistd.h> 46 47 static void usage(); 48 49 int 50 main(argc, argv) 51 int argc; 52 char **argv; 53 { 54 char *p; 55 int proc = 0; 56 struct rtprio rtp; 57 58 /* find basename */ 59 if ((p = rindex(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 perror(argv[0]); 77 exit (1); 78 } 79 printf("%s: ", p); 80 switch (rtp.type) { 81 case RTP_PRIO_REALTIME: 82 printf("realtime priority %d\n", rtp.prio); 83 break; 84 case RTP_PRIO_NORMAL: 85 printf("normal priority\n"); 86 break; 87 case RTP_PRIO_IDLE: 88 printf("idle priority %d\n", rtp.prio); 89 break; 90 default: 91 printf("invalid priority type %d\n", rtp.type); 92 break; 93 } 94 exit(0); 95 default: 96 if (argv[1][0] == '-' || isdigit(argv[1][0])) { 97 if (argv[1][0] == '-') { 98 if (strcmp(argv[1], "-t") == 0) { 99 rtp.type = RTP_PRIO_NORMAL; 100 rtp.prio = 0; 101 } else { 102 usage(p); 103 break; 104 } 105 } else { 106 rtp.prio = atoi(argv[1]); 107 } 108 } else { 109 usage(p); 110 break; 111 } 112 113 if (argv[2][0] == '-') 114 proc = -atoi(argv[2]); 115 116 if (rtprio(RTP_SET, proc, &rtp) != 0) { 117 perror(argv[0]); 118 exit (1); 119 } 120 121 if (proc == 0) { 122 execvp(argv[2], &argv[2]); 123 perror(argv[0]); 124 exit (1); 125 } 126 } 127 exit (1); 128 } 129 130 static void 131 usage(basename) 132 char *basename; 133 { 134 (void) fprintf(stderr, "usage: %s\n", basename); 135 (void) fprintf(stderr, "usage: %s [-]pid\n", basename); 136 (void) fprintf(stderr, "usage: %s priority command [ args ] \n", basename); 137 (void) fprintf(stderr, "usage: %s priority -pid \n", basename); 138 (void) fprintf(stderr, "usage: %s -t command [ args ] \n", basename); 139 (void) fprintf(stderr, "usage: %s -t -pid \n", basename); 140 141 exit(-1); 142 } 143