1 /* $NetBSD: main.c,v 1.6 2008/11/16 11:30:55 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 * 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 1.6 2008/11/16 11:30:55 ad 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 }; 53 54 static const char *sources[] = { 55 "builtin", 56 "boot", 57 "filesys", 58 }; 59 60 int 61 main(int argc, char **argv) 62 { 63 struct iovec iov; 64 modstat_t *ms; 65 size_t len; 66 const char *name; 67 char sbuf[32]; 68 int ch; 69 70 name = NULL; 71 72 while ((ch = getopt(argc, argv, "n:")) != -1) { 73 switch (ch) { 74 case 'n': 75 name = optarg; 76 break; 77 default: 78 usage(); 79 /* NOTREACHED */ 80 } 81 } 82 83 argc -= optind; 84 argv += optind; 85 if (argc != 0) 86 usage(); 87 88 for (len = 4096;;) { 89 iov.iov_base = malloc(len); 90 iov.iov_len = len; 91 if (modctl(MODCTL_STAT, &iov)) { 92 err(EXIT_FAILURE, "modctl(MODCTL_STAT)"); 93 } 94 if (len >= iov.iov_len) { 95 break; 96 } 97 free(iov.iov_base); 98 len = iov.iov_len; 99 } 100 101 printf("NAME\t\tCLASS\tSOURCE\tREFS\tSIZE\tREQUIRES\n"); 102 len = iov.iov_len / sizeof(modstat_t); 103 qsort(iov.iov_base, len, sizeof(modstat_t), modstatcmp); 104 for (ms = iov.iov_base; len != 0; ms++, len--) { 105 if (name != NULL && strcmp(ms->ms_name, name) != 0) { 106 continue; 107 } 108 if (ms->ms_required[0] == '\0') { 109 ms->ms_required[0] = '-'; 110 ms->ms_required[1] = '\0'; 111 } 112 if (ms->ms_size == 0) { 113 sbuf[0] = '-'; 114 sbuf[1] = '\0'; 115 } else { 116 snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size); 117 } 118 printf("%-16s%s\t%s\t%d\t%s\t%s\n", 119 ms->ms_name, classes[ms->ms_class], sources[ms->ms_source], 120 ms->ms_refcnt, sbuf, ms->ms_required); 121 } 122 123 exit(EXIT_SUCCESS); 124 } 125 126 static void 127 usage(void) 128 { 129 130 (void)fprintf(stderr, "Usage: %s [-n name]\n", getprogname()); 131 exit(EXIT_FAILURE); 132 } 133 134 static int 135 modstatcmp(const void *a, const void *b) 136 { 137 const modstat_t *msa, *msb; 138 139 msa = a; 140 msb = b; 141 142 return strcmp(msa->ms_name, msb->ms_name); 143 } 144 145