1 /* $NetBSD: misc.c,v 1.9 2012/10/27 22:38:07 alnsn 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 1.9 2012/10/27 22:38:07 alnsn 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_BPF 0 63 { .n_name = "bpf_fileops", }, 64 #define NL_CRYPTO 1 65 { .n_name = "cryptofops" }, 66 #define NL_DMIO 2 67 { .n_name = "dmio_fileops", }, 68 #define NL_DRVCTL 3 69 { .n_name = "drvctl_fileops", }, 70 #define NL_DTV_DEMUX 4 71 { .n_name = "dtv_demux_fileops", }, 72 #define NL_FILEMON 5 73 { .n_name = "filemon_fileops", }, 74 #define NL_KQUEUE 6 75 { .n_name = "kqueueops" }, 76 #define NL_MQUEUE 7 77 { .n_name = "mqops" }, 78 #define NL_PIPE 8 79 { .n_name = "pipeops" }, 80 #define NL_PUTTER 9 81 { .n_name = "putter_fileops", }, 82 #define NL_SEM 10 83 { .n_name = "semops", }, 84 #define NL_SOCKET 11 85 { .n_name = "socketops" }, 86 #define NL_SVR4_NET 12 87 { .n_name = "svr4_netops" }, 88 #define NL_SVR4_32_NET 13 89 { .n_name = "svr4_32_netops" }, 90 #define NL_TAP 14 91 { .n_name = "tap_fileops", }, 92 #define NL_VNOPS 15 93 { .n_name = "vnops" }, 94 #define NL_XENEVT 16 95 { .n_name = "xenevt_fileops" }, 96 #define NL_MAX 17 97 { .n_name = NULL } 98 }; 99 100 extern int vflg; 101 102 103 static int 104 p_bpf(struct file *f) 105 { 106 struct bpf_d bpf; 107 108 if (!KVM_READ(f->f_data, &bpf, sizeof (bpf))) { 109 dprintf("can't read bpf at %p for pid %d", f->f_data, Pid); 110 return 0; 111 } 112 (void)printf("* bpf rec=%lu, dr=%lu, cap=%lu, pid=%lu", 113 bpf.bd_rcount, bpf.bd_dcount, bpf.bd_ccount, 114 (unsigned long)bpf.bd_pid); 115 if (bpf.bd_promisc) 116 (void)printf(", promisc"); 117 if (bpf.bd_immediate) 118 (void)printf(", immed"); 119 if (bpf.bd_seesent) 120 (void)printf(", seesent"); 121 if (bpf.bd_jitcode != NULL) 122 (void)printf(", jit"); 123 if (bpf.bd_async) 124 (void)printf(", asyncgrp=%lu", (unsigned long)bpf.bd_pgid); 125 if (bpf.bd_state == BPF_IDLE) 126 (void)printf(", idle"); 127 else if (bpf.bd_state == BPF_WAITING) 128 (void)printf(", waiting"); 129 else if (bpf.bd_state == BPF_TIMED_OUT) 130 (void)printf(", timeout"); 131 (void)printf("\n"); 132 return 0; 133 } 134 135 static int 136 p_mqueue(struct file *f) 137 { 138 struct mqueue mq; 139 140 if (!KVM_READ(f->f_data, &mq, sizeof (mq))) { 141 dprintf("can't read mqueue at %p for pid %d", f->f_data, Pid); 142 return 0; 143 } 144 (void)printf("* mqueue \"%s\"\n", mq.mq_name); 145 return 0; 146 } 147 148 static int 149 p_kqueue(struct file *f) 150 { 151 struct kqueue kq; 152 153 if (!KVM_READ(f->f_data, &kq, sizeof (kq))) { 154 dprintf("can't read kqueue at %p for pid %d", f->f_data, Pid); 155 return 0; 156 } 157 (void)printf("* kqueue pending %d\n", kq.kq_count); 158 return 0; 159 } 160 161 int 162 pmisc(struct file *f, const char *name) 163 { 164 size_t i; 165 if (nl[0].n_value == 0) { 166 int n; 167 if ((n = KVM_NLIST(nl)) == -1) 168 errx(1, "Cannot list kernel symbols (%s)", 169 KVM_GETERR()); 170 else if (n != 0 && vflg) 171 warnx("Could not find %d symbols", n); 172 } 173 for (i = 0; i < NL_MAX; i++) 174 if ((uintptr_t)f->f_ops == nl[i].n_value) 175 break; 176 switch (i) { 177 case NL_BPF: 178 return p_bpf(f); 179 case NL_MQUEUE: 180 return p_mqueue(f); 181 case NL_KQUEUE: 182 return p_kqueue(f); 183 case NL_TAP: 184 printf("* tap %lu\n", (unsigned long)(intptr_t)f->f_data); 185 return 0; 186 case NL_CRYPTO: 187 printf("* crypto %p\n", f->f_data); 188 return 0; 189 case NL_MAX: 190 printf("* %s %p\n", name, f->f_data); 191 return 0; 192 default: 193 printf("* %s %p\n", nl[i].n_name, f->f_data); 194 return 0; 195 } 196 } 197