1 /* $NetBSD: main.c,v 1.14 2011/08/02 16:46:45 mbalmer 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 1.14 2011/08/02 16:46:45 mbalmer 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 #include "prog_ops.h" 43 44 int main(int, char **); 45 static void usage(void) __dead; 46 static int modstatcmp(const void *, const void *); 47 48 static const char *classes[] = { 49 "any", 50 "misc", 51 "vfs", 52 "driver", 53 "exec", 54 "secmodel", 55 }; 56 const unsigned int class_max = __arraycount(classes); 57 58 static const char *sources[] = { 59 "builtin", 60 "boot", 61 "filesys", 62 }; 63 const unsigned int source_max = __arraycount(sources); 64 65 int 66 main(int argc, char **argv) 67 { 68 struct iovec iov; 69 modstat_t *ms; 70 size_t len; 71 const char *name; 72 char sbuf[32]; 73 int ch; 74 size_t maxnamelen = 16, i; 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 == 1 && name == NULL) 92 name = argv[0]; 93 else if (argc != 0) 94 usage(); 95 96 if (prog_init && prog_init() == -1) 97 err(1, "prog init failed"); 98 99 for (len = 8192;;) { 100 iov.iov_base = malloc(len); 101 iov.iov_len = len; 102 if (prog_modctl(MODCTL_STAT, &iov)) { 103 err(EXIT_FAILURE, "modctl(MODCTL_STAT)"); 104 } 105 if (len >= iov.iov_len) { 106 break; 107 } 108 free(iov.iov_base); 109 len = iov.iov_len; 110 } 111 112 len = iov.iov_len / sizeof(modstat_t); 113 qsort(iov.iov_base, len, sizeof(modstat_t), modstatcmp); 114 for (i = 0, ms = iov.iov_base; i < len; i++, ms++) { 115 size_t namelen = strlen(ms->ms_name); 116 if (maxnamelen < namelen) 117 maxnamelen = namelen; 118 } 119 printf("%-*s %-10s %-10s %-5s %-8s %s\n", 120 (int)maxnamelen, "NAME", "CLASS", "SOURCE", "REFS", "SIZE", 121 "REQUIRES"); 122 for (ms = iov.iov_base; len != 0; ms++, len--) { 123 const char *class; 124 const char *source; 125 126 if (name != NULL && strcmp(ms->ms_name, name) != 0) { 127 continue; 128 } 129 if (ms->ms_required[0] == '\0') { 130 ms->ms_required[0] = '-'; 131 ms->ms_required[1] = '\0'; 132 } 133 if (ms->ms_size == 0) { 134 sbuf[0] = '-'; 135 sbuf[1] = '\0'; 136 } else { 137 snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size); 138 } 139 if (ms->ms_class <= class_max) 140 class = classes[ms->ms_class]; 141 else 142 class = "UNKNOWN"; 143 if (ms->ms_source < source_max) 144 source = sources[ms->ms_source]; 145 else 146 source = "UNKNOWN"; 147 148 printf("%-*s %-10s %-10s %-5d %-8s %s\n", 149 (int)maxnamelen, ms->ms_name, class, source, ms->ms_refcnt, 150 sbuf, ms->ms_required); 151 } 152 153 exit(EXIT_SUCCESS); 154 } 155 156 static void 157 usage(void) 158 { 159 160 (void)fprintf(stderr, "Usage: %s [-n] [name]\n", getprogname()); 161 exit(EXIT_FAILURE); 162 } 163 164 static int 165 modstatcmp(const void *a, const void *b) 166 { 167 const modstat_t *msa, *msb; 168 169 msa = a; 170 msb = b; 171 172 return strcmp(msa->ms_name, msb->ms_name); 173 } 174