usr.bin/fstat/misc.c

   1 /*      $NetBSD: misc.c,v 1.6 2009/07/13 21:43:24 christos 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 1.6 2009/07/13 21:43:24 christos Exp $");
  34
  35 #define _KMEMUSER
  36 #include <stdbool.h>
  37 #include <sys/param.h>
  38 #include <sys/types.h>
  39 #include <sys/time.h>
  40 #include <sys/stat.h>
  41 #include <sys/condvar.h>
  42 #include <sys/selinfo.h>
  43 #include <sys/filedesc.h>
  44 #define _KERNEL
  45 #include <sys/mqueue.h>
  46 #include <sys/eventvar.h>
  47 #undef _KERNEL
  48 #include <sys/proc.h>
  49 #define _KERNEL
  50 #include <sys/file.h>
  51 #undef _KERNEL
  52 #include <sys/vnode.h>
  53 #include <sys/mount.h>
  54
  55 #include <net/bpfdesc.h>
  56
  57 #include <err.h>
  58 #include <kvm.h>
  59 #include "fstat.h"
  60
  61 static struct nlist nl[] = {
  62 #define NL_KQUEUE       0
  63     { .n_name = "kqueueops" },
  64 #define NL_MQUEUE       1
  65     { .n_name = "mqops" },
  66 #define NL_PIPE         2
  67     { .n_name = "pipeops" },
  68 #define NL_SOCKET       3
  69     { .n_name = "socketops" },
  70 #define NL_VNOPS        4
  71     { .n_name = "vnops" },
  72 #define NL_CRYPTO       5
  73     { .n_name = "cryptofops" },
  74 #define NL_BPF          6
  75     { .n_name = "bpf_fileops", },
  76 #define NL_TAP          7
  77     { .n_name = "tap_fileops", },
  78 #define NL_MAX          8
  79     { .n_name = NULL }
  80 };
  81
  82 extern int vflg;
  83
  84
  85 static int
  86 p_bpf(struct file *f)
  87 {
  88         struct bpf_d bpf;
  89
  90         if (!KVM_READ(f->f_data, &bpf, sizeof (bpf))) {
  91                 dprintf("can't read bpf at %p for pid %d", f->f_data, Pid);
  92                 return 0;
  93         }
  94         (void)printf("* bpf rec=%lu, dr=%lu, cap=%lu, pid=%lu",
  95             bpf.bd_rcount, bpf.bd_dcount, bpf.bd_ccount,
  96             (unsigned long)bpf.bd_pid);
  97         if (bpf.bd_promisc)
  98                 (void)printf(", promisc");
  99         if (bpf.bd_immediate)
 100                 (void)printf(", immed");
 101         if (bpf.bd_seesent)
 102                 (void)printf(", seesent");
 103         if (bpf.bd_async)
 104                 (void)printf(", asyncgrp=%lu", (unsigned long)bpf.bd_pgid);
 105         if (bpf.bd_state == BPF_IDLE)
 106                 (void)printf(", idle");
 107         else if (bpf.bd_state == BPF_WAITING)
 108                 (void)printf(", waiting");
 109         else if (bpf.bd_state == BPF_TIMED_OUT)
 110                 (void)printf(", timeout");
 111         (void)printf("\n");
 112         return 0;
 113 }
 114
 115 static int
 116 p_mqueue(struct file *f)
 117 {
 118         struct mqueue mq;
 119
 120         if (!KVM_READ(f->f_data, &mq, sizeof (mq))) {
 121                 dprintf("can't read mqueue at %p for pid %d", f->f_data, Pid);
 122                 return 0;
 123         }
 124         (void)printf("* mqueue \"%s\"\n", mq.mq_name);
 125         return 0;
 126 }
 127
 128 static int
 129 p_kqueue(struct file *f)
 130 {
 131         struct kqueue kq;
 132
 133         if (!KVM_READ(f->f_data, &kq, sizeof (kq))) {
 134                 dprintf("can't read kqueue at %p for pid %d", f->f_data, Pid);
 135                 return 0;
 136         }
 137         (void)printf("* kqueue pending %d\n", kq.kq_count);
 138         return 0;
 139 }
 140
 141 int
 142 pmisc(struct file *f, const char *name)
 143 {
 144         size_t i;
 145         if (nl[0].n_value == 0) {
 146                 int n;
 147                 if ((n = KVM_NLIST(nl)) == -1)
 148                         errx(1, "Cannot list kernel symbols (%s)",
 149                             KVM_GETERR());
 150                 else if (n != 0 && vflg)
 151                         warnx("Could not find %d symbols", n);
 152         }
 153         for (i = 0; i < NL_MAX; i++)
 154                 if ((uintptr_t)f->f_ops == nl[i].n_value)
 155                         break;
 156         switch (i) {
 157         case NL_BPF:
 158                 return p_bpf(f);
 159         case NL_MQUEUE:
 160                 return p_mqueue(f);
 161         case NL_KQUEUE:
 162                 return p_kqueue(f);
 163         case NL_TAP:
 164                 printf("* tap %lu\n", (unsigned long)(intptr_t)f->f_data);
 165                 return 0;
 166         case NL_CRYPTO:
 167                 printf("* crypto %p\n", f->f_data);
 168                 return 0;
 169         default:
 170                 printf("* %s %p\n", name, f->f_data);
 171                 return 0;
 172         }
 173 }