ip_log.c revision 3448:aaf16568054b
1298770Sdelphij/* 2275970Scy * Copyright (C) 1997-2003 by Darren Reed. 3275970Scy * 4275970Scy * See the IPFILTER.LICENCE file for details on licencing. 5275970Scy * 6298770Sdelphij * $Id: ip_log.c,v 2.75.2.7 2005/06/11 07:47:44 darrenr Exp $ 7275970Scy * 8275970Scy * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 9275970Scy * Use is subject to license terms. 10275970Scy */ 11275970Scy 12275970Scy#pragma ident "%Z%%M% %I% %E% SMI" 13275970Scy 14275970Scy#include <sys/param.h> 15275970Scy#if defined(KERNEL) || defined(_KERNEL) 16275970Scy# undef KERNEL 17275970Scy# undef _KERNEL 18275970Scy# define KERNEL 1 19275970Scy# define _KERNEL 1 20275970Scy#endif 21275970Scy#if defined(__NetBSD__) && (NetBSD >= 199905) && !defined(IPFILTER_LKM) && \ 22275970Scy defined(_KERNEL) 23275970Scy# include "opt_ipfilter_log.h" 24275970Scy#endif 25275970Scy#if defined(__FreeBSD__) && !defined(IPFILTER_LKM) 26275970Scy# if defined(_KERNEL) 27275970Scy# if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) 28275970Scy# include "opt_ipfilter.h" 29275970Scy# endif 30275970Scy# else 31275970Scy# include <osreldate.h> 32275970Scy# endif 33275970Scy#endif 34275970Scy#ifndef SOLARIS 35275970Scy# define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) 36275970Scy#endif 37275970Scy#include <sys/errno.h> 38275970Scy#include <sys/types.h> 39275970Scy#include <sys/file.h> 40275970Scy#ifndef _KERNEL 41275970Scy# include <stdio.h> 42275970Scy# include <string.h> 43275970Scy# include <stdlib.h> 44275970Scy# include <ctype.h> 45275970Scy# define _KERNEL 46275970Scy# define KERNEL 47275970Scy# ifdef __OpenBSD__ 48275970Scystruct file; 49275970Scy# endif 50275970Scy# include <sys/uio.h> 51275970Scy# undef _KERNEL 52275970Scy# undef KERNEL 53275970Scy#endif 54275970Scy#if __FreeBSD_version >= 220000 && defined(_KERNEL) 55275970Scy# include <sys/fcntl.h> 56275970Scy# include <sys/filio.h> 57275970Scy#else 58275970Scy# include <sys/ioctl.h> 59275970Scy#endif 60275970Scy#include <sys/time.h> 61275970Scy#if defined(_KERNEL) 62275970Scy# include <sys/systm.h> 63275970Scy# if defined(NetBSD) && (__NetBSD_Version__ >= 104000000) 64275970Scy# include <sys/proc.h> 65275970Scy# endif 66275970Scy#endif /* _KERNEL */ 67275970Scy#if !SOLARIS && !defined(__hpux) && !defined(linux) 68275970Scy# if (NetBSD > 199609) || (OpenBSD > 199603) || (__FreeBSD_version >= 300000) 69275970Scy# include <sys/dirent.h> 70275970Scy# else 71275970Scy# include <sys/dir.h> 72275970Scy# endif 73275970Scy# include <sys/mbuf.h> 74275970Scy#else 75275970Scy# if !defined(__hpux) && defined(_KERNEL) 76275970Scy# include <sys/filio.h> 77275970Scy# include <sys/cred.h> 78275970Scy# include <sys/ddi.h> 79275970Scy# include <sys/sunddi.h> 80275970Scy# include <sys/ksynch.h> 81275970Scy# include <sys/kmem.h> 82275970Scy# include <sys/mkdev.h> 83275970Scy# include <sys/dditypes.h> 84275970Scy# include <sys/cmn_err.h> 85275970Scy# endif /* !__hpux */ 86275970Scy#endif /* !SOLARIS && !__hpux */ 87275970Scy#if !defined(linux) 88275970Scy# include <sys/protosw.h> 89275970Scy#endif 90275970Scy#include <sys/socket.h> 91275970Scy 92275970Scy#include <net/if.h> 93275970Scy#ifdef sun 94275970Scy# include <net/af.h> 95275970Scy#endif 96275970Scy#if __FreeBSD_version >= 300000 97275970Scy# include <net/if_var.h> 98275970Scy#endif 99275970Scy#include <net/route.h> 100275970Scy#include <netinet/in.h> 101275970Scy#ifdef __sgi 102275970Scy# include <sys/ddi.h> 103275970Scy# ifdef IFF_DRVRLOCK /* IRIX6 */ 104275970Scy# include <sys/hashing.h> 105275970Scy# endif 106275970Scy#endif 107275970Scy#if !defined(__hpux) && !defined(linux) && \ 108275970Scy !(defined(__sgi) && !defined(IFF_DRVRLOCK)) /*IRIX<6*/ 109275970Scy# include <netinet/in_var.h> 110275970Scy#endif 111275970Scy#include <netinet/in_systm.h> 112275970Scy#include <netinet/ip.h> 113275970Scy#include <netinet/tcp.h> 114298770Sdelphij#include <netinet/udp.h> 115298770Sdelphij#include <netinet/ip_icmp.h> 116298770Sdelphij#ifdef USE_INET6 117298770Sdelphij# include <netinet/icmp6.h> 118298770Sdelphij#endif 119298770Sdelphij#if !defined(linux) 120298770Sdelphij# include <netinet/ip_var.h> 121298770Sdelphij#endif 122275970Scy#ifndef _KERNEL 123275970Scy# include <syslog.h> 124275970Scy#endif 125275970Scy#include "netinet/ip_compat.h" 126275970Scy#include <netinet/tcpip.h> 127275970Scy#include "netinet/ip_fil.h" 128275970Scy#include "netinet/ip_nat.h" 129275970Scy#include "netinet/ip_frag.h" 130275970Scy#include "netinet/ip_state.h" 131275970Scy#include "netinet/ip_auth.h" 132275970Scy#include "netinet/ipf_stack.h" 133275970Scy#if (__FreeBSD_version >= 300000) || defined(__NetBSD__) 134275970Scy# include <sys/malloc.h> 135275970Scy#endif 136275970Scy/* END OF INCLUDES */ 137275970Scy 138275970Scy#ifdef IPFILTER_LOG 139275970Scy 140275970Scy# if defined(IPL_SELECT) 141275970Scy# include <machine/sys/user.h> 142275970Scy# include <sys/kthread_iface.h> 143275970Scy# define READ_COLLISION 0x001 144275970Scy 145275970Scyiplog_select_t iplog_ss[IPL_LOGMAX+1]; 146275970Scy 147275970Scyextern int selwait; 148275970Scy# endif /* IPL_SELECT */ 149275970Scy 150275970Scy/* ipl_magic never changes */ 151275970Scyint ipl_magic[IPL_LOGSIZE] = { IPL_MAGIC, IPL_MAGIC_NAT, IPL_MAGIC_STATE, 152275970Scy IPL_MAGIC, IPL_MAGIC, IPL_MAGIC, 153275970Scy IPL_MAGIC, IPL_MAGIC }; 154275970Scy 155275970Scy/* ------------------------------------------------------------------------ */ 156298770Sdelphij/* Function: fr_loginit */ 157275970Scy/* Returns: int - 0 == success (always returned) */ 158275970Scy/* Parameters: Nil */ 159275970Scy/* */ 160275970Scy/* Initialise log buffers & pointers. Also iniialised the CRC to a local */ 161275970Scy/* secret for use in calculating the "last log checksum". */ 162275970Scy/* ------------------------------------------------------------------------ */ 163275970Scyint fr_loginit(ifs) 164298770Sdelphijipf_stack_t *ifs; 165298770Sdelphij{ 166275970Scy int i; 167275970Scy 168275970Scy ifs->ifs_ipl_suppress = 1; 169275970Scy ifs->ifs_ipl_logmax = IPL_LOGMAX; 170275970Scy ifs->ifs_ipl_logsize = IPFILTER_LOGSIZE; 171275970Scy for (i = IPL_LOGMAX; i >= 0; i--) { 172275970Scy ifs->ifs_iplt[i] = NULL; 173298770Sdelphij ifs->ifs_ipll[i] = NULL; 174275970Scy ifs->ifs_iplh[i] = &ifs->ifs_iplt[i]; 175275970Scy ifs->ifs_iplused[i] = 0; 176275970Scy bzero((char *)&ifs->ifs_iplcrc[i], sizeof(ifs->ifs_iplcrc[i])); 177275970Scy# ifdef IPL_SELECT 178275970Scy iplog_ss[i].read_waiter = 0; 179275970Scy iplog_ss[i].state = 0; 180275970Scy# endif 181275970Scy# if defined(linux) && defined(_KERNEL) 182275970Scy init_waitqueue_head(iplh_linux + i); 183275970Scy# endif 184275970Scy } 185275970Scy 186275970Scy# if SOLARIS && defined(_KERNEL) 187275970Scy cv_init(&ifs->ifs_iplwait, "ipl condvar", CV_DRIVER, NULL); 188275970Scy# endif 189275970Scy MUTEX_INIT(&ifs->ifs_ipl_mutex, "ipf log mutex"); 190275970Scy 191275970Scy ifs->ifs_ipl_log_init = 1; 192275970Scy 193275970Scy return 0; 194275970Scy} 195275970Scy 196275970Scy 197275970Scy/* ------------------------------------------------------------------------ */ 198275970Scy/* Function: fr_logunload */ 199275970Scy/* Returns: Nil */ 200275970Scy/* Parameters: Nil */ 201275970Scy/* */ 202275970Scy/* Clean up any log data that has accumulated without being read. */ 203275970Scy/* ------------------------------------------------------------------------ */ 204275970Scyvoid fr_logunload(ifs) 205275970Scyipf_stack_t *ifs; 206275970Scy{ 207275970Scy int i; 208275970Scy 209275970Scy if (ifs->ifs_ipl_log_init == 0) 210275970Scy return; 211275970Scy 212275970Scy for (i = IPL_LOGMAX; i >= 0; i--) 213275970Scy (void) ipflog_clear(i, ifs); 214275970Scy 215275970Scy# if SOLARIS && defined(_KERNEL) 216275970Scy cv_destroy(&ifs->ifs_iplwait); 217275970Scy# endif 218275970Scy MUTEX_DESTROY(&ifs->ifs_ipl_mutex); 219275970Scy 220275970Scy ifs->ifs_ipl_log_init = 0; 221275970Scy} 222275970Scy 223275970Scy 224275970Scy/* ------------------------------------------------------------------------ */ 225275970Scy/* Function: ipflog */ 226275970Scy/* Returns: int - 0 == success, -1 == failure */ 227275970Scy/* Parameters: fin(I) - pointer to packet information */ 228275970Scy/* flags(I) - flags from filter rules */ 229275970Scy/* */ 230275970Scy/* Create a log record for a packet given that it has been triggered by a */ 231275970Scy/* rule (or the default setting). Calculate the transport protocol header */ 232275970Scy/* size using predetermined size of a couple of popular protocols and thus */ 233275970Scy/* how much data to copy into the log, including part of the data body if */ 234275970Scy/* requested. */ 235275970Scy/* ------------------------------------------------------------------------ */ 236275970Scyint ipflog(fin, flags) 237275970Scyfr_info_t *fin; 238275970Scyu_int flags; 239275970Scy{ 240275970Scy register size_t hlen; 241275970Scy int types[2], mlen; 242275970Scy size_t sizes[2]; 243275970Scy void *ptrs[2]; 244275970Scy ipflog_t ipfl; 245275970Scy u_char p; 246275970Scy mb_t *m; 247275970Scy# if SOLARIS && defined(_KERNEL) 248275970Scy net_data_t nif; 249275970Scy void *ifp; 250275970Scy# else 251275970Scy# if defined(__hpux) && defined(_KERNEL) 252275970Scy qif_t *ifp; 253275970Scy# else 254275970Scy struct ifnet *ifp; 255275970Scy# endif 256275970Scy# endif /* SOLARIS */ 257275970Scy ipf_stack_t *ifs = fin->fin_ifs; 258275970Scy 259275970Scy ipfl.fl_nattag.ipt_num[0] = 0; 260275970Scy m = fin->fin_m; 261275970Scy ifp = fin->fin_ifp; 262275970Scy hlen = fin->fin_hlen; 263275970Scy /* 264275970Scy * calculate header size. 265275970Scy */ 266275970Scy if (fin->fin_off == 0) { 267275970Scy p = fin->fin_fi.fi_p; 268275970Scy if (p == IPPROTO_TCP) 269275970Scy hlen += MIN(sizeof(tcphdr_t), fin->fin_dlen); 270275970Scy else if (p == IPPROTO_UDP) 271275970Scy hlen += MIN(sizeof(udphdr_t), fin->fin_dlen); 272275970Scy else if (p == IPPROTO_ICMP) { 273275970Scy struct icmp *icmp; 274275970Scy 275275970Scy icmp = (struct icmp *)fin->fin_dp; 276275970Scy 277275970Scy /* 278275970Scy * For ICMP, if the packet is an error packet, also 279275970Scy * include the information about the packet which 280275970Scy * caused the error. 281275970Scy */ 282275970Scy switch (icmp->icmp_type) 283275970Scy { 284275970Scy case ICMP_UNREACH : 285275970Scy case ICMP_SOURCEQUENCH : 286275970Scy case ICMP_REDIRECT : 287275970Scy case ICMP_TIMXCEED : 288275970Scy case ICMP_PARAMPROB : 289275970Scy hlen += MIN(sizeof(struct icmp) + 8, 290275970Scy fin->fin_dlen); 291275970Scy break; 292275970Scy default : 293275970Scy hlen += MIN(sizeof(struct icmp), 294275970Scy fin->fin_dlen); 295275970Scy break; 296275970Scy } 297275970Scy } 298275970Scy# ifdef USE_INET6 299298770Sdelphij else if (p == IPPROTO_ICMPV6) { 300298770Sdelphij struct icmp6_hdr *icmp; 301298770Sdelphij 302275970Scy icmp = (struct icmp6_hdr *)fin->fin_dp; 303275970Scy 304275970Scy /* 305275970Scy * For ICMPV6, if the packet is an error packet, also 306275970Scy * include the information about the packet which 307275970Scy * caused the error. 308275970Scy */ 309275970Scy if (icmp->icmp6_type < 128) { 310275970Scy hlen += MIN(sizeof(struct icmp6_hdr) + 8, 311275970Scy fin->fin_dlen); 312298770Sdelphij } else { 313298770Sdelphij hlen += MIN(sizeof(struct icmp6_hdr), 314298770Sdelphij fin->fin_dlen); 315275970Scy } 316275970Scy } 317275970Scy# endif 318275970Scy } 319275970Scy /* 320275970Scy * Get the interface number and name to which this packet is 321275970Scy * currently associated. 322275970Scy */ 323275970Scy# if SOLARIS && defined(_KERNEL) 324275970Scy ipfl.fl_unit = (u_int)0; 325275970Scy nif = NULL; 326275970Scy if (fin->fin_fi.fi_v == 4) 327275970Scy nif = ifs->ifs_ipf_ipv4; 328275970Scy else if (fin->fin_fi.fi_v == 6) 329275970Scy nif = ifs->ifs_ipf_ipv6; 330275970Scy if (nif != NULL) { 331275970Scy if (net_getifname(nif, (phy_if_t)ifp, 332275970Scy ipfl.fl_ifname, sizeof(ipfl.fl_ifname)) != 0) 333275970Scy return (-1); 334275970Scy } 335275970Scy 336275970Scy# else 337275970Scy# if defined(__hpux) && defined(_KERNEL) 338275970Scy ipfl.fl_unit = (u_int)0; 339275970Scy (void) strncpy(ipfl.fl_ifname, IFNAME(ifp), sizeof(ipfl.fl_ifname)); 340275970Scy# else 341275970Scy# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \ 342275970Scy (defined(OpenBSD) && (OpenBSD >= 199603)) || defined(linux) || \ 343275970Scy (defined(__FreeBSD__) && (__FreeBSD_version >= 501113)) 344275970Scy COPYIFNAME(ifp, ipfl.fl_ifname); 345275970Scy# else 346275970Scy ipfl.fl_unit = (u_int)ifp->if_unit; 347298770Sdelphij# if defined(_KERNEL) 348298770Sdelphij if ((ipfl.fl_ifname[0] = ifp->if_name[0])) 349298770Sdelphij if ((ipfl.fl_ifname[1] = ifp->if_name[1])) 350298770Sdelphij if ((ipfl.fl_ifname[2] = ifp->if_name[2])) 351298770Sdelphij ipfl.fl_ifname[3] = ifp->if_name[3]; 352275970Scy# else 353275970Scy (void) strncpy(ipfl.fl_ifname, IFNAME(ifp), sizeof(ipfl.fl_ifname)); 354275970Scy ipfl.fl_ifname[sizeof(ipfl.fl_ifname) - 1] = '\0'; 355275970Scy# endif 356275970Scy# endif 357275970Scy# endif /* __hpux */ 358275970Scy# endif /* SOLARIS */ 359275970Scy mlen = fin->fin_plen - hlen; 360275970Scy if (!ifs->ifs_ipl_logall) { 361275970Scy mlen = (flags & FR_LOGBODY) ? MIN(mlen, 128) : 0; 362275970Scy } else if ((flags & FR_LOGBODY) == 0) { 363275970Scy mlen = 0; 364298770Sdelphij } 365298770Sdelphij if (mlen < 0) 366298770Sdelphij mlen = 0; 367298770Sdelphij ipfl.fl_plen = (u_char)mlen; 368298770Sdelphij ipfl.fl_hlen = (u_char)hlen; 369275970Scy ipfl.fl_rule = fin->fin_rule; 370275970Scy (void) strncpy(ipfl.fl_group, fin->fin_group, FR_GROUPLEN); 371275970Scy if (fin->fin_fr != NULL) { 372275970Scy ipfl.fl_loglevel = fin->fin_fr->fr_loglevel; 373275970Scy ipfl.fl_logtag = fin->fin_fr->fr_logtag; 374275970Scy } else { 375275970Scy ipfl.fl_loglevel = 0xffff; 376275970Scy ipfl.fl_logtag = FR_NOLOGTAG; 377275970Scy } 378275970Scy if (fin->fin_nattag != NULL) 379275970Scy bcopy(fin->fin_nattag, (void *)&ipfl.fl_nattag, 380275970Scy sizeof(ipfl.fl_nattag)); 381275970Scy ipfl.fl_flags = flags; 382275970Scy ipfl.fl_dir = fin->fin_out; 383275970Scy ipfl.fl_lflags = fin->fin_flx; 384275970Scy ptrs[0] = (void *)&ipfl; 385275970Scy sizes[0] = sizeof(ipfl); 386275970Scy types[0] = 0; 387298770Sdelphij# if defined(MENTAT) && defined(_KERNEL) 388298770Sdelphij /* 389298770Sdelphij * Are we copied from the mblk or an aligned array ? 390298770Sdelphij */ 391298770Sdelphij if (fin->fin_ip == (ip_t *)m->b_rptr) { 392298770Sdelphij ptrs[1] = m; 393275970Scy sizes[1] = hlen + mlen; 394275970Scy types[1] = 1; 395275970Scy } else { 396275970Scy ptrs[1] = fin->fin_ip; 397275970Scy sizes[1] = hlen + mlen; 398275970Scy types[1] = 0; 399275970Scy } 400275970Scy# else 401275970Scy ptrs[1] = m; 402275970Scy sizes[1] = hlen + mlen; 403275970Scy types[1] = 1; 404275970Scy# endif /* MENTAT */ 405275970Scy return ipllog(IPL_LOGIPF, fin, ptrs, sizes, types, 2, fin->fin_ifs); 406275970Scy} 407275970Scy 408275970Scy 409275970Scy/* ------------------------------------------------------------------------ */ 410275970Scy/* Function: ipllog */ 411275970Scy/* Returns: int - 0 == success, -1 == failure */ 412275970Scy/* Parameters: dev(I) - device that owns this log record */ 413275970Scy/* fin(I) - pointer to packet information */ 414275970Scy/* items(I) - array of pointers to log data */ 415275970Scy/* itemsz(I) - array of size of valid memory pointed to */ 416275970Scy/* types(I) - type of data pointed to by items pointers */ 417275970Scy/* cnt(I) - number of elements in arrays items/itemsz/types */ 418275970Scy/* */ 419275970Scy/* Takes an array of parameters and constructs one record to include the */ 420275970Scy/* miscellaneous packet information, as well as packet data, for reading */ 421275970Scy/* from the log device. */ 422275970Scy/* ------------------------------------------------------------------------ */ 423275970Scyint ipllog(dev, fin, items, itemsz, types, cnt, ifs) 424275970Scyint dev; 425275970Scyfr_info_t *fin; 426275970Scyvoid **items; 427275970Scysize_t *itemsz; 428275970Scyint *types, cnt; 429275970Scyipf_stack_t *ifs; 430275970Scy{ 431275970Scy caddr_t buf, ptr; 432275970Scy iplog_t *ipl; 433275970Scy size_t len; 434275970Scy int i; 435280849Scy SPL_INT(s); 436280849Scy 437280849Scy /* 438280849Scy * Check to see if this log record has a CRC which matches the last 439280849Scy * record logged. If it does, just up the count on the previous one 440280849Scy * rather than create a new one. 441280849Scy */ 442280849Scy if (ifs->ifs_ipl_suppress) { 443280849Scy MUTEX_ENTER(&ifs->ifs_ipl_mutex); 444280849Scy if ((fin != NULL) && (fin->fin_off == 0)) { 445280849Scy if ((ifs->ifs_ipll[dev] != NULL) && 446280849Scy bcmp((char *)fin, (char *)&ifs->ifs_iplcrc[dev], 447280849Scy FI_LCSIZE) == 0) { 448280849Scy ifs->ifs_ipll[dev]->ipl_count++; 449275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 450275970Scy return 0; 451275970Scy } 452275970Scy bcopy((char *)fin, (char *)&ifs->ifs_iplcrc[dev], 453275970Scy FI_LCSIZE); 454275970Scy } else 455275970Scy bzero((char *)&ifs->ifs_iplcrc[dev], FI_CSIZE); 456275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 457275970Scy } 458275970Scy 459275970Scy /* 460275970Scy * Get the total amount of data to be logged. 461275970Scy */ 462275970Scy for (i = 0, len = sizeof(iplog_t); i < cnt; i++) 463275970Scy len += itemsz[i]; 464275970Scy 465275970Scy /* 466275970Scy * check that we have space to record this information and can 467275970Scy * allocate that much. 468275970Scy */ 469275970Scy KMALLOCS(buf, caddr_t, len); 470275970Scy if (buf == NULL) 471275970Scy return -1; 472275970Scy SPL_NET(s); 473275970Scy MUTEX_ENTER(&ifs->ifs_ipl_mutex); 474275970Scy if ((ifs->ifs_iplused[dev] + len) > IPFILTER_LOGSIZE) { 475275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 476275970Scy SPL_X(s); 477275970Scy KFREES(buf, len); 478275970Scy return -1; 479275970Scy } 480275970Scy ifs->ifs_iplused[dev] += len; 481275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 482275970Scy SPL_X(s); 483275970Scy 484275970Scy /* 485275970Scy * advance the log pointer to the next empty record and deduct the 486275970Scy * amount of space we're going to use. 487275970Scy */ 488275970Scy ipl = (iplog_t *)buf; 489275970Scy ipl->ipl_magic = ipl_magic[dev]; 490275970Scy ipl->ipl_count = 1; 491275970Scy ipl->ipl_next = NULL; 492275970Scy ipl->ipl_dsize = len; 493275970Scy#ifdef _KERNEL 494275970Scy GETKTIME(&ipl->ipl_sec); 495275970Scy#else 496275970Scy ipl->ipl_sec = 0; 497275970Scy ipl->ipl_usec = 0; 498275970Scy#endif 499275970Scy 500275970Scy /* 501275970Scy * Loop through all the items to be logged, copying each one to the 502275970Scy * buffer. Use bcopy for normal data or the mb_t copyout routine. 503275970Scy */ 504275970Scy for (i = 0, ptr = buf + sizeof(*ipl); i < cnt; i++) { 505275970Scy if (types[i] == 0) { 506275970Scy bcopy(items[i], ptr, itemsz[i]); 507275970Scy } else if (types[i] == 1) { 508275970Scy COPYDATA(items[i], 0, itemsz[i], ptr); 509275970Scy } 510275970Scy ptr += itemsz[i]; 511275970Scy } 512275970Scy SPL_NET(s); 513275970Scy MUTEX_ENTER(&ifs->ifs_ipl_mutex); 514275970Scy ifs->ifs_ipll[dev] = ipl; 515275970Scy *ifs->ifs_iplh[dev] = ipl; 516275970Scy ifs->ifs_iplh[dev] = &ipl->ipl_next; 517275970Scy 518275970Scy /* 519275970Scy * Now that the log record has been completed and added to the queue, 520275970Scy * wake up any listeners who may want to read it. 521275970Scy */ 522275970Scy# if SOLARIS && defined(_KERNEL) 523275970Scy cv_signal(&ifs->ifs_iplwait); 524275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 525275970Scy# else 526275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 527275970Scy WAKEUP(&ifs->ifs_iplh, dev); 528275970Scy# endif 529275970Scy SPL_X(s); 530275970Scy# ifdef IPL_SELECT 531275970Scy iplog_input_ready(dev); 532275970Scy# endif 533275970Scy return 0; 534275970Scy} 535275970Scy 536275970Scy 537275970Scy/* ------------------------------------------------------------------------ */ 538298770Sdelphij/* Function: ipflog_read */ 539275970Scy/* Returns: int - 0 == success, else error value. */ 540275970Scy/* Parameters: unit(I) - device we are reading from */ 541275970Scy/* uio(O) - pointer to information about where to store data */ 542275970Scy/* */ 543275970Scy/* Called to handle a read on an IPFilter device. Returns only complete */ 544275970Scy/* log messages - will not partially copy a log record out to userland. */ 545275970Scy/* */ 546275970Scy/* NOTE: This function will block and wait for a signal to return data if */ 547275970Scy/* there is none present. Asynchronous I/O is not implemented. */ 548275970Scy/* ------------------------------------------------------------------------ */ 549275970Scyint ipflog_read(unit, uio, ifs) 550275970Scyminor_t unit; 551275970Scystruct uio *uio; 552275970Scyipf_stack_t *ifs; 553275970Scy{ 554275970Scy size_t dlen, copied; 555275970Scy int error = 0; 556275970Scy iplog_t *ipl; 557275970Scy SPL_INT(s); 558275970Scy 559275970Scy /* 560275970Scy * Sanity checks. Make sure the minor # is valid and we're copying 561275970Scy * a valid chunk of data. 562275970Scy */ 563275970Scy if (IPL_LOGMAX < unit) 564275970Scy return ENXIO; 565275970Scy if (uio->uio_resid == 0) 566275970Scy return 0; 567275970Scy if ((uio->uio_resid < sizeof(iplog_t)) || 568275970Scy (uio->uio_resid > ifs->ifs_ipl_logsize)) 569275970Scy return EINVAL; 570275970Scy 571275970Scy /* 572275970Scy * Lock the log so we can snapshot the variables. Wait for a signal 573275970Scy * if the log is empty. 574275970Scy */ 575275970Scy SPL_NET(s); 576275970Scy MUTEX_ENTER(&ifs->ifs_ipl_mutex); 577275970Scy 578275970Scy while (ifs->ifs_iplt[unit] == NULL) { 579275970Scy# if SOLARIS && defined(_KERNEL) 580275970Scy if (!cv_wait_sig(&ifs->ifs_iplwait, &ifs->ifs_ipl_mutex.ipf_lk)) { 581275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 582275970Scy return EINTR; 583275970Scy } 584275970Scy# else 585275970Scy# if defined(__hpux) && defined(_KERNEL) 586275970Scy lock_t *l; 587275970Scy 588275970Scy# ifdef IPL_SELECT 589275970Scy if (uio->uio_fpflags & (FNBLOCK|FNDELAY)) { 590275970Scy /* this is no blocking system call */ 591275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 592275970Scy return 0; 593275970Scy } 594275970Scy# endif 595275970Scy 596275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 597275970Scy l = get_sleep_lock(&ifs->ifs_iplh[unit]); 598275970Scy error = sleep(&ifs->ifs_iplh[unit], PZERO+1); 599275970Scy spinunlock(l); 600275970Scy# else 601275970Scy# if defined(__osf__) && defined(_KERNEL) 602275970Scy error = mpsleep(&ifs->ifs_iplh[unit], PSUSP|PCATCH, "iplread", 0, 603275970Scy &ifs->ifs_ipl_mutex, MS_LOCK_SIMPLE); 604275970Scy# else 605275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 606275970Scy SPL_X(s); 607275970Scy error = SLEEP(&ifs->ifs_iplh[unit], "ipl sleep"); 608275970Scy# endif /* __osf__ */ 609275970Scy# endif /* __hpux */ 610275970Scy if (error) 611275970Scy return error; 612275970Scy SPL_NET(s); 613275970Scy MUTEX_ENTER(&ifs->ifs_ipl_mutex); 614275970Scy# endif /* SOLARIS */ 615275970Scy } 616275970Scy 617275970Scy# if (BSD >= 199101) || defined(__FreeBSD__) || defined(__osf__) 618275970Scy uio->uio_rw = UIO_READ; 619275970Scy# endif 620275970Scy 621275970Scy for (copied = 0; ((ipl = ifs->ifs_iplt[unit]) != NULL); copied += dlen) { 622275970Scy dlen = ipl->ipl_dsize; 623275970Scy if (dlen > uio->uio_resid) 624275970Scy break; 625275970Scy /* 626275970Scy * Don't hold the mutex over the uiomove call. 627275970Scy */ 628275970Scy ifs->ifs_iplt[unit] = ipl->ipl_next; 629275970Scy ifs->ifs_iplused[unit] -= dlen; 630275970Scy if (ifs->ifs_iplt[unit] == NULL) { 631275970Scy ifs->ifs_iplh[unit] = &ifs->ifs_iplt[unit]; 632275970Scy ifs->ifs_ipll[unit] = NULL; 633275970Scy } 634275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 635275970Scy SPL_X(s); 636275970Scy error = UIOMOVE((caddr_t)ipl, dlen, UIO_READ, uio); 637275970Scy if (error) { 638275970Scy SPL_NET(s); 639275970Scy MUTEX_ENTER(&ifs->ifs_ipl_mutex); 640275970Scy ifs->ifs_iplused[unit] += dlen; 641275970Scy ipl->ipl_next = ifs->ifs_iplt[unit]; 642275970Scy ifs->ifs_iplt[unit] = ipl; 643275970Scy ifs->ifs_ipll[unit] = ipl; 644275970Scy if (ifs->ifs_iplh[unit] == &ifs->ifs_iplt[unit]) { 645275970Scy *ifs->ifs_iplh[unit] = ipl; 646275970Scy ifs->ifs_iplh[unit] = &ipl->ipl_next; 647275970Scy } 648275970Scy break; 649275970Scy } 650275970Scy MUTEX_ENTER(&ifs->ifs_ipl_mutex); 651275970Scy KFREES((caddr_t)ipl, dlen); 652275970Scy SPL_NET(s); 653275970Scy } 654275970Scy 655275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 656275970Scy SPL_X(s); 657275970Scy return error; 658275970Scy} 659275970Scy 660275970Scy 661275970Scy/* ------------------------------------------------------------------------ */ 662275970Scy/* Function: ipflog_clear */ 663275970Scy/* Returns: int - number of log bytes cleared. */ 664275970Scy/* Parameters: unit(I) - device we are reading from */ 665275970Scy/* */ 666275970Scy/* Deletes all queued up log records for a given output device. */ 667275970Scy/* ------------------------------------------------------------------------ */ 668275970Scyint ipflog_clear(unit, ifs) 669275970Scyminor_t unit; 670275970Scyipf_stack_t *ifs; 671275970Scy{ 672275970Scy iplog_t *ipl; 673275970Scy int used; 674275970Scy SPL_INT(s); 675275970Scy 676275970Scy SPL_NET(s); 677275970Scy MUTEX_ENTER(&ifs->ifs_ipl_mutex); 678275970Scy while ((ipl = ifs->ifs_iplt[unit]) != NULL) { 679275970Scy ifs->ifs_iplt[unit] = ipl->ipl_next; 680275970Scy KFREES((caddr_t)ipl, ipl->ipl_dsize); 681275970Scy } 682275970Scy ifs->ifs_iplh[unit] = &ifs->ifs_iplt[unit]; 683275970Scy ifs->ifs_ipll[unit] = NULL; 684275970Scy used = ifs->ifs_iplused[unit]; 685275970Scy ifs->ifs_iplused[unit] = 0; 686275970Scy bzero((char *)&ifs->ifs_iplcrc[unit], FI_CSIZE); 687275970Scy MUTEX_EXIT(&ifs->ifs_ipl_mutex); 688275970Scy SPL_X(s); 689275970Scy return used; 690275970Scy} 691275970Scy#endif /* IPFILTER_LOG */ 692275970Scy