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main.c revision 1.12 
      1 /*	$NetBSD: main.c,v 1.12 2011/06/03 15:34:46 nonaka 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 1.12 2011/06/03 15:34:46 nonaka 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 != 0)
     92 		usage();
     93 
     94 	if (prog_init && prog_init() == -1)
     95 		err(1, "prog init failed");
     96 
     97 	for (len = 8192;;) {
     98 		iov.iov_base = malloc(len);
     99 		iov.iov_len = len;
    100 		if (prog_modctl(MODCTL_STAT, &iov)) {
    101 			err(EXIT_FAILURE, "modctl(MODCTL_STAT)");
    102 		}
    103 		if (len >= iov.iov_len) {
    104 			break;
    105 		}
    106 		free(iov.iov_base);
    107 		len = iov.iov_len;
    108 	}
    109 
    110 	len = iov.iov_len / sizeof(modstat_t);
    111 	qsort(iov.iov_base, len, sizeof(modstat_t), modstatcmp);
    112 	for (i = 0, ms = iov.iov_base; i < len; i++, ms++) {
    113 		size_t namelen = strlen(ms->ms_name);
    114 		if (maxnamelen < namelen)
    115 			maxnamelen = namelen;
    116 	}
    117 	printf("%-*s %-10s %-10s %-5s %-8s %s\n",
    118 	    maxnamelen, "NAME", "CLASS", "SOURCE", "REFS", "SIZE", "REQUIRES");
    119 	for (ms = iov.iov_base; len != 0; ms++, len--) {
    120 		const char *class;
    121 		const char *source;
    122 
    123 		if (name != NULL && strcmp(ms->ms_name, name) != 0) {
    124 			continue;
    125 		}
    126 		if (ms->ms_required[0] == '\0') {
    127 			ms->ms_required[0] = '-';
    128 			ms->ms_required[1] = '\0';
    129 		}
    130 		if (ms->ms_size == 0) {
    131 			sbuf[0] = '-';
    132 			sbuf[1] = '\0';
    133 		} else {
    134 			snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size);
    135 		}
    136 		if (ms->ms_class <= class_max)
    137 			class = classes[ms->ms_class];
    138 		else
    139 			class = "UNKNOWN";
    140 		if (ms->ms_source < source_max)
    141 			source = sources[ms->ms_source];
    142 		else
    143 			source = "UNKNOWN";
    144 
    145 		printf("%-*s %-10s %-10s %-5d %-8s %s\n",
    146 		    maxnamelen, ms->ms_name, class, source, ms->ms_refcnt, sbuf,
    147 		    ms->ms_required);
    148 	}
    149 
    150 	exit(EXIT_SUCCESS);
    151 }
    152 
    153 static void
    154 usage(void)
    155 {
    156 
    157 	(void)fprintf(stderr, "Usage: %s [-n name]\n", getprogname());
    158 	exit(EXIT_FAILURE);
    159 }
    160 
    161 static int
    162 modstatcmp(const void *a, const void *b)
    163 {
    164 	const modstat_t *msa, *msb;
    165 
    166 	msa = a;
    167 	msb = b;
    168 
    169 	return strcmp(msa->ms_name, msb->ms_name);
    170 }
    171