1 /* $NetBSD: main.c,v 1.2 2008/01/19 01:18:47 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __RCSID("$NetBSD: main.c,v 1.2 2008/01/19 01:18:47 ad Exp $"); 39 #endif /* !lint */ 40 41 #include <sys/module.h> 42 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 #include <err.h> 48 49 int main(int, char **); 50 static void usage(void) __dead; 51 52 static const char *classes[] = { 53 "any", 54 "misc", 55 "vfs", 56 "driver", 57 "exec", 58 }; 59 60 static const char *sources[] = { 61 "kernel", 62 "boot", 63 "filesys", 64 }; 65 66 int 67 main(int argc, char **argv) 68 { 69 struct iovec iov; 70 modstat_t *ms; 71 size_t len; 72 const char *name; 73 char sbuf[32]; 74 int ch; 75 76 name = NULL; 77 78 while ((ch = getopt(argc, argv, "n:")) != -1) { 79 switch (ch) { 80 case 'n': 81 name = optarg; 82 break; 83 default: 84 usage(); 85 /* NOTREACHED */ 86 } 87 } 88 89 argc -= optind; 90 argv += optind; 91 if (argc != 0) 92 usage(); 93 94 for (len = 4096;;) { 95 iov.iov_base = malloc(len); 96 iov.iov_len = len; 97 if (modctl(MODCTL_STAT, &iov)) { 98 err(EXIT_FAILURE, "modctl(MODCTL_STAT)"); 99 } 100 if (len >= iov.iov_len) { 101 break; 102 } 103 free(iov.iov_base); 104 len = iov.iov_len; 105 } 106 107 printf("NAME\t\tCLASS\tSOURCE\tREFS\tSIZE\tREQUIRES\n"); 108 len = iov.iov_len / sizeof(modstat_t); 109 for (ms = iov.iov_base; len != 0; ms++, len--) { 110 if (name != NULL && strcmp(ms->ms_name, name) != 0) { 111 continue; 112 } 113 if (ms->ms_required[0] == '\0') { 114 ms->ms_required[0] = '-'; 115 ms->ms_required[1] = '\0'; 116 } 117 if (ms->ms_size == 0) { 118 sbuf[0] = '-'; 119 sbuf[1] = '\0'; 120 } else { 121 snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size); 122 } 123 printf("%-16s%s\t%s\t%d\t%s\t%s\n", 124 ms->ms_name, classes[ms->ms_class], sources[ms->ms_source], 125 ms->ms_refcnt, sbuf, ms->ms_required); 126 } 127 128 exit(EXIT_SUCCESS); 129 } 130 131 static void 132 usage(void) 133 { 134 135 (void)fprintf(stderr, "Usage: %s [-n name]", getprogname()); 136 exit(EXIT_FAILURE); 137 } 138