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main.c revision 1.11 
      1 /*	$NetBSD: main.c,v 1.11 2010/12/13 20:48:45 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 1.11 2010/12/13 20:48:45 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 #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 
     75 	name = NULL;
     76 
     77 	while ((ch = getopt(argc, argv, "n:")) != -1) {
     78 		switch (ch) {
     79 		case 'n':
     80 			name = optarg;
     81 			break;
     82 		default:
     83 			usage();
     84 			/* NOTREACHED */
     85 		}
     86 	}
     87 
     88 	argc -= optind;
     89 	argv += optind;
     90 	if (argc != 0)
     91 		usage();
     92 
     93 	if (prog_init && prog_init() == -1)
     94 		err(1, "prog init failed");
     95 
     96 	for (len = 8192;;) {
     97 		iov.iov_base = malloc(len);
     98 		iov.iov_len = len;
     99 		if (prog_modctl(MODCTL_STAT, &iov)) {
    100 			err(EXIT_FAILURE, "modctl(MODCTL_STAT)");
    101 		}
    102 		if (len >= iov.iov_len) {
    103 			break;
    104 		}
    105 		free(iov.iov_base);
    106 		len = iov.iov_len;
    107 	}
    108 
    109 	printf("%-16s %-10s %-10s %-5s %-8s %s\n",
    110 	    "NAME", "CLASS", "SOURCE", "REFS", "SIZE", "REQUIRES");
    111 	len = iov.iov_len / sizeof(modstat_t);
    112 	qsort(iov.iov_base, len, sizeof(modstat_t), modstatcmp);
    113 	for (ms = iov.iov_base; len != 0; ms++, len--) {
    114 		const char *class;
    115 		const char *source;
    116 
    117 		if (name != NULL && strcmp(ms->ms_name, name) != 0) {
    118 			continue;
    119 		}
    120 		if (ms->ms_required[0] == '\0') {
    121 			ms->ms_required[0] = '-';
    122 			ms->ms_required[1] = '\0';
    123 		}
    124 		if (ms->ms_size == 0) {
    125 			sbuf[0] = '-';
    126 			sbuf[1] = '\0';
    127 		} else {
    128 			snprintf(sbuf, sizeof(sbuf), "%u", ms->ms_size);
    129 		}
    130 		if (ms->ms_class <= class_max)
    131 			class = classes[ms->ms_class];
    132 		else
    133 			class = "UNKNOWN";
    134 		if (ms->ms_source < source_max)
    135 			source = sources[ms->ms_source];
    136 		else
    137 			source = "UNKNOWN";
    138 
    139 		printf("%-16s %-10s %-10s %-5d %-8s %s\n",
    140 		    ms->ms_name, class, source, ms->ms_refcnt, sbuf,
    141 		    ms->ms_required);
    142 	}
    143 
    144 	exit(EXIT_SUCCESS);
    145 }
    146 
    147 static void
    148 usage(void)
    149 {
    150 
    151 	(void)fprintf(stderr, "Usage: %s [-n name]\n", getprogname());
    152 	exit(EXIT_FAILURE);
    153 }
    154 
    155 static int
    156 modstatcmp(const void *a, const void *b)
    157 {
    158 	const modstat_t *msa, *msb;
    159 
    160 	msa = a;
    161 	msb = b;
    162 
    163 	return strcmp(msa->ms_name, msb->ms_name);
    164 }
    165