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misc.c revision 1.2.8.1 
      1 /*	$NetBSD: misc.c,v 1.2.8.1 2009/05/13 19:19:50 jym Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __RCSID("$NetBSD: misc.c,v 1.2.8.1 2009/05/13 19:19:50 jym Exp $");
     34 
     35 #include <stdbool.h>
     36 #include <sys/param.h>
     37 #include <sys/time.h>
     38 #include <sys/stat.h>
     39 #include <sys/condvar.h>
     40 #include <sys/selinfo.h>
     41 #include <sys/filedesc.h>
     42 #define _KERNEL
     43 #include <sys/mqueue.h>
     44 #include <sys/eventvar.h>
     45 #undef _KERNEL
     46 #include <sys/proc.h>
     47 #define _KERNEL
     48 #include <sys/file.h>
     49 #undef _KERNEL
     50 #include <sys/vnode.h>
     51 #include <sys/mount.h>
     52 
     53 #include <net/bpfdesc.h>
     54 
     55 #include <err.h>
     56 #include <kvm.h>
     57 #include "fstat.h"
     58 
     59 static struct nlist nl[] = {
     60 #define NL_KQUEUE	0
     61     { .n_name = "kqueueops" },
     62 #define NL_MQUEUE	1
     63     { .n_name = "mqops" },
     64 #define NL_PIPE		2
     65     { .n_name = "pipeops" },
     66 #define NL_SOCKET	3
     67     { .n_name = "socketops" },
     68 #define NL_VNOPS	4
     69     { .n_name = "vnops" },
     70 #define NL_CRYPTO	5
     71     { .n_name = "cryptofops" },
     72 #define NL_BPF		6
     73     { .n_name = "bpf_fileops", },
     74 #define NL_TAP		7
     75     { .n_name = "tap_fileops", },
     76 #define NL_MAX		8
     77     { .n_name = NULL }
     78 };
     79 
     80 extern int vflg;
     81 
     82 
     83 static int
     84 p_bpf(struct file *f)
     85 {
     86 	struct bpf_d bpf;
     87 
     88 	if (!KVM_READ(f->f_data, &bpf, sizeof (bpf))) {
     89 		dprintf("can't read bpf at %p for pid %d", f->f_data, Pid);
     90 		return 0;
     91 	}
     92 	(void)printf("* bpf rec=%lu, dr=%lu, cap=%lu, pid=%lu",
     93 	    bpf.bd_rcount, bpf.bd_dcount, bpf.bd_ccount,
     94 	    (unsigned long)bpf.bd_pid);
     95 	if (bpf.bd_promisc)
     96 		(void)printf(", promisc");
     97 	if (bpf.bd_immediate)
     98 		(void)printf(", immed");
     99 	if (bpf.bd_seesent)
    100 		(void)printf(", seesent");
    101 	if (bpf.bd_async)
    102 		(void)printf(", asyncgrp=%lu", (unsigned long)bpf.bd_pgid);
    103 	if (bpf.bd_state == BPF_IDLE)
    104 		(void)printf(", idle");
    105 	else if (bpf.bd_state == BPF_WAITING)
    106 		(void)printf(", waiting");
    107 	else if (bpf.bd_state == BPF_TIMED_OUT)
    108 		(void)printf(", timeout");
    109 	(void)printf("\n");
    110 	return 0;
    111 }
    112 
    113 static int
    114 p_mqueue(struct file *f)
    115 {
    116 	struct mqueue mq;
    117 
    118 	if (!KVM_READ(f->f_data, &mq, sizeof (mq))) {
    119 		dprintf("can't read mqueue at %p for pid %d", f->f_data, Pid);
    120 		return 0;
    121 	}
    122 	(void)printf("* mqueue \"%s\"\n", mq.mq_name);
    123 	return 0;
    124 }
    125 
    126 static int
    127 p_kqueue(struct file *f)
    128 {
    129 	struct kqueue kq;
    130 
    131 	if (!KVM_READ(f->f_data, &kq, sizeof (kq))) {
    132 		dprintf("can't read kqueue at %p for pid %d", f->f_data, Pid);
    133 		return 0;
    134 	}
    135 	(void)printf("* kqueue pending %d\n", kq.kq_count);
    136 	return 0;
    137 }
    138 
    139 int
    140 pmisc(struct file *f, const char *name)
    141 {
    142 	size_t i;
    143 	if (nl[0].n_value == 0) {
    144 		int n;
    145 		if ((n = KVM_NLIST(nl)) == -1)
    146 			errx(1, "Cannot list kernel symbols (%s)",
    147 			    KVM_GETERR());
    148 		else if (n != 0 && vflg)
    149 			warnx("Could not find %d symbols", n);
    150 	}
    151 	for (i = 0; i < NL_MAX; i++)
    152 		if ((uintptr_t)f->f_ops == nl[i].n_value)
    153 			break;
    154 	switch (i) {
    155 	case NL_BPF:
    156 		return p_bpf(f);
    157 	case NL_MQUEUE:
    158 		return p_mqueue(f);
    159 	case NL_KQUEUE:
    160 		return p_kqueue(f);
    161 	case NL_TAP:
    162 		printf("* tap %lu\n", (unsigned long)(intptr_t)f->f_data);
    163 		return 0;
    164 	case NL_CRYPTO:
    165 		printf("* crypto %p\n", f->f_data);
    166 		return 0;
    167 	default:
    168 		printf("* %s %p\n", name, f->f_data);
    169 		return 0;
    170 	}
    171 }
    172