1 /* $NetBSD: main.c,v 1.10 2010/03/19 16:25:33 pooka 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 1.10 2010/03/19 16:25:33 pooka 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 static int modstatcmp(const void *, const void *); 45 46 static const char *classes[] = { 47 "any", 48 "misc", 49 "vfs", 50 "driver", 51 "exec", 52 "secmodel", 53 }; 54 const unsigned int class_max = __arraycount(classes); 55 56 static const char *sources[] = { 57 "builtin", 58 "boot", 59 "filesys", 60 }; 61 const unsigned int source_max = __arraycount(sources); 62 63 int 64 main(int argc, char **argv) 65 { 66 struct iovec iov; 67 modstat_t *ms; 68 size_t len; 69 const char *name; 70 char sbuf[32]; 71 int ch; 72 73 name = NULL; 74 75 while ((ch = getopt(argc, argv, "n:")) != -1) { 76 switch (ch) { 77 case 'n': 78 name = optarg; 79 break; 80 default: 81 usage(); 82 /* NOTREACHED */ 83 } 84 } 85 86 argc -= optind; 87 argv += optind; 88 if (argc != 0) 89 usage(); 90 91 for (len = 8192;;) { 92 iov.iov_base = malloc(len); 93 iov.iov_len = len; 94 if (modctl(MODCTL_STAT, &iov)) { 95 err(EXIT_FAILURE, "modctl(MODCTL_STAT)"); 96 } 97 if (len >= iov.iov_len) { 98 break; 99 } 100 free(iov.iov_base); 101 len = iov.iov_len; 102 } 103 104 printf("%-16s %-10s %-10s %-5s %-8s %s\n", 105 "NAME", "CLASS", "SOURCE", "REFS", "SIZE", "REQUIRES"); 106 len = iov.iov_len / sizeof(modstat_t); 107 qsort(iov.iov_base, len, sizeof(modstat_t), modstatcmp); 108 for (ms = iov.iov_base; len != 0; ms++, len--) { 109 const char *class; 110 const char *source; 111 112 if (name != NULL && strcmp(ms->ms_name, name) != 0) { 113 continue; 114 } 115 if (ms->ms_required[0] == '\0') { 116 ms->ms_required[0] = '-'; 117 ms->ms_required[1] = '\0'; 118 } 119 if (ms->ms_size == 0) { 120 sbuf[0] = '-'; 121 sbuf[1] = '\0'; 122 } else { 123 snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size); 124 } 125 if (ms->ms_class <= class_max) 126 class = classes[ms->ms_class]; 127 else 128 class = "UNKNOWN"; 129 if (ms->ms_source < source_max) 130 source = sources[ms->ms_source]; 131 else 132 source = "UNKNOWN"; 133 134 printf("%-16s %-10s %-10s %-5d %-8s %s\n", 135 ms->ms_name, class, source, ms->ms_refcnt, sbuf, 136 ms->ms_required); 137 } 138 139 exit(EXIT_SUCCESS); 140 } 141 142 static void 143 usage(void) 144 { 145 146 (void)fprintf(stderr, "Usage: %s [-n name]\n", getprogname()); 147 exit(EXIT_FAILURE); 148 } 149 150 static int 151 modstatcmp(const void *a, const void *b) 152 { 153 const modstat_t *msa, *msb; 154 155 msa = a; 156 msb = b; 157 158 return strcmp(msa->ms_name, msb->ms_name); 159 } 160