1 /* $NetBSD: main.c,v 1.3 2008/04/28 20:23:09 martin 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 #ifndef lint 31 __RCSID("$NetBSD: main.c,v 1.3 2008/04/28 20:23:09 martin Exp $"); 32 #endif /* !lint */ 33 34 #include <sys/module.h> 35 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <unistd.h> 40 #include <err.h> 41 42 int main(int, char **); 43 static void usage(void) __dead; 44 45 static const char *classes[] = { 46 "any", 47 "misc", 48 "vfs", 49 "driver", 50 "exec", 51 }; 52 53 static const char *sources[] = { 54 "kernel", 55 "boot", 56 "filesys", 57 }; 58 59 int 60 main(int argc, char **argv) 61 { 62 struct iovec iov; 63 modstat_t *ms; 64 size_t len; 65 const char *name; 66 char sbuf[32]; 67 int ch; 68 69 name = NULL; 70 71 while ((ch = getopt(argc, argv, "n:")) != -1) { 72 switch (ch) { 73 case 'n': 74 name = optarg; 75 break; 76 default: 77 usage(); 78 /* NOTREACHED */ 79 } 80 } 81 82 argc -= optind; 83 argv += optind; 84 if (argc != 0) 85 usage(); 86 87 for (len = 4096;;) { 88 iov.iov_base = malloc(len); 89 iov.iov_len = len; 90 if (modctl(MODCTL_STAT, &iov)) { 91 err(EXIT_FAILURE, "modctl(MODCTL_STAT)"); 92 } 93 if (len >= iov.iov_len) { 94 break; 95 } 96 free(iov.iov_base); 97 len = iov.iov_len; 98 } 99 100 printf("NAME\t\tCLASS\tSOURCE\tREFS\tSIZE\tREQUIRES\n"); 101 len = iov.iov_len / sizeof(modstat_t); 102 for (ms = iov.iov_base; len != 0; ms++, len--) { 103 if (name != NULL && strcmp(ms->ms_name, name) != 0) { 104 continue; 105 } 106 if (ms->ms_required[0] == '\0') { 107 ms->ms_required[0] = '-'; 108 ms->ms_required[1] = '\0'; 109 } 110 if (ms->ms_size == 0) { 111 sbuf[0] = '-'; 112 sbuf[1] = '\0'; 113 } else { 114 snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size); 115 } 116 printf("%-16s%s\t%s\t%d\t%s\t%s\n", 117 ms->ms_name, classes[ms->ms_class], sources[ms->ms_source], 118 ms->ms_refcnt, sbuf, ms->ms_required); 119 } 120 121 exit(EXIT_SUCCESS); 122 } 123 124 static void 125 usage(void) 126 { 127 128 (void)fprintf(stderr, "Usage: %s [-n name]", getprogname()); 129 exit(EXIT_FAILURE); 130 } 131