1 /* $NetBSD: main.c,v 1.8 2009/10/03 02:27:43 elad 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 1.8 2009/10/03 02:27:43 elad 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 55 static const char *sources[] = { 56 "builtin", 57 "boot", 58 "filesys", 59 }; 60 61 int 62 main(int argc, char **argv) 63 { 64 struct iovec iov; 65 modstat_t *ms; 66 size_t len; 67 const char *name; 68 char sbuf[32]; 69 int ch; 70 71 name = NULL; 72 73 while ((ch = getopt(argc, argv, "n:")) != -1) { 74 switch (ch) { 75 case 'n': 76 name = optarg; 77 break; 78 default: 79 usage(); 80 /* NOTREACHED */ 81 } 82 } 83 84 argc -= optind; 85 argv += optind; 86 if (argc != 0) 87 usage(); 88 89 for (len = 4096;;) { 90 iov.iov_base = malloc(len); 91 iov.iov_len = len; 92 if (modctl(MODCTL_STAT, &iov)) { 93 err(EXIT_FAILURE, "modctl(MODCTL_STAT)"); 94 } 95 if (len >= iov.iov_len) { 96 break; 97 } 98 free(iov.iov_base); 99 len = iov.iov_len; 100 } 101 102 printf("%-16s %-10s %-10s %-5s %-8s %s\n", 103 "NAME", "CLASS", "SOURCE", "REFS", "SIZE", "REQUIRES"); 104 len = iov.iov_len / sizeof(modstat_t); 105 qsort(iov.iov_base, len, sizeof(modstat_t), modstatcmp); 106 for (ms = iov.iov_base; len != 0; ms++, len--) { 107 if (name != NULL && strcmp(ms->ms_name, name) != 0) { 108 continue; 109 } 110 if (ms->ms_required[0] == '\0') { 111 ms->ms_required[0] = '-'; 112 ms->ms_required[1] = '\0'; 113 } 114 if (ms->ms_size == 0) { 115 sbuf[0] = '-'; 116 sbuf[1] = '\0'; 117 } else { 118 snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size); 119 } 120 printf("%-16s %-10s %-10s %-5d %-8s %s\n", 121 ms->ms_name, classes[ms->ms_class], sources[ms->ms_source], 122 ms->ms_refcnt, sbuf, ms->ms_required); 123 } 124 125 exit(EXIT_SUCCESS); 126 } 127 128 static void 129 usage(void) 130 { 131 132 (void)fprintf(stderr, "Usage: %s [-n name]\n", getprogname()); 133 exit(EXIT_FAILURE); 134 } 135 136 static int 137 modstatcmp(const void *a, const void *b) 138 { 139 const modstat_t *msa, *msb; 140 141 msa = a; 142 msb = b; 143 144 return strcmp(msa->ms_name, msb->ms_name); 145 } 146 147