30# endif
31#endif
32#ifdef IPFILTER_LOG
33# ifndef SOLARIS
34# define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
35# endif
36# ifndef _KERNEL
37# include <stdio.h>
38# include <string.h>
39# include <stdlib.h>
40# include <ctype.h>
41# endif
42# include <sys/errno.h>
43# include <sys/types.h>
44# include <sys/file.h>
45# if __FreeBSD_version >= 220000 && defined(_KERNEL)
46# include <sys/fcntl.h>
47# include <sys/filio.h>
48# else
49# include <sys/ioctl.h>
50# endif
51# include <sys/time.h>
52# if defined(_KERNEL) && !defined(linux)
53# include <sys/systm.h>
54# endif
55# include <sys/uio.h>
56# if !SOLARIS
57# if (NetBSD > 199609) || (OpenBSD > 199603) || (__FreeBSD_version >= 300000)
58# include <sys/dirent.h>
59# else
60# include <sys/dir.h>
61# endif
62# ifndef linux
63# include <sys/mbuf.h>
64# endif
65# else
66# include <sys/filio.h>
67# include <sys/cred.h>
68# include <sys/ddi.h>
69# include <sys/sunddi.h>
70# include <sys/ksynch.h>
71# include <sys/kmem.h>
72# include <sys/mkdev.h>
73# include <sys/dditypes.h>
74# include <sys/cmn_err.h>
75# endif
76# ifndef linux
77# include <sys/protosw.h>
78# endif
79# include <sys/socket.h>
80
81# include <net/if.h>
82# ifdef sun
83# include <net/af.h>
84# endif
85# if __FreeBSD_version >= 300000
86# include <net/if_var.h>
87# endif
88# include <net/route.h>
89# include <netinet/in.h>
90# ifdef __sgi
91# include <sys/ddi.h>
92# ifdef IFF_DRVRLOCK /* IRIX6 */
93# include <sys/hashing.h>
94# endif
95# endif
96# if !defined(linux) && !(defined(__sgi) && !defined(IFF_DRVRLOCK)) /*IRIX<6*/
97# include <netinet/in_var.h>
98# endif
99# include <netinet/in_systm.h>
100# include <netinet/ip.h>
101# include <netinet/tcp.h>
102# include <netinet/udp.h>
103# include <netinet/ip_icmp.h>
104# ifndef linux
105# include <netinet/ip_var.h>
106# endif
107# ifndef _KERNEL
108# include <syslog.h>
109# endif
110# include "netinet/ip_compat.h"
111# include <netinet/tcpip.h>
112# include "netinet/ip_fil.h"
113# include "netinet/ip_proxy.h"
114# include "netinet/ip_nat.h"
115# include "netinet/ip_frag.h"
116# include "netinet/ip_state.h"
117# include "netinet/ip_auth.h"
118# if (__FreeBSD_version >= 300000)
119# include <sys/malloc.h>
120# endif
121
122# ifndef MIN
123# define MIN(a,b) (((a)<(b))?(a):(b))
124# endif
125
126
127# if SOLARIS || defined(__sgi)
128extern kmutex_t ipl_mutex;
129# if SOLARIS
130extern kcondvar_t iplwait;
131# endif
132# endif
133
134iplog_t **iplh[IPL_LOGMAX+1], *iplt[IPL_LOGMAX+1], *ipll[IPL_LOGMAX+1];
135size_t iplused[IPL_LOGMAX+1];
136static fr_info_t iplcrc[IPL_LOGMAX+1];
137# ifdef linux
138static struct wait_queue *iplwait[IPL_LOGMAX+1];
139# endif
140
141
142/*
143 * Initialise log buffers & pointers. Also iniialised the CRC to a local
144 * secret for use in calculating the "last log checksum".
145 */
146void ipflog_init()
147{
148 int i;
149
150 for (i = IPL_LOGMAX; i >= 0; i--) {
151 iplt[i] = NULL;
152 ipll[i] = NULL;
153 iplh[i] = &iplt[i];
154 iplused[i] = 0;
155 bzero((char *)&iplcrc[i], sizeof(iplcrc[i]));
156 }
157}
158
159
160/*
161 * ipflog
162 * Create a log record for a packet given that it has been triggered by a
163 * rule (or the default setting). Calculate the transport protocol header
164 * size using predetermined size of a couple of popular protocols and thus
165 * how much data to copy into the log, including part of the data body if
166 * requested.
167 */
168int ipflog(flags, ip, fin, m)
169u_int flags;
170ip_t *ip;
171fr_info_t *fin;
172mb_t *m;
173{
174 ipflog_t ipfl;
175 register size_t mlen, hlen;
176 size_t sizes[2];
177 void *ptrs[2];
178 int types[2];
179 u_char p;
180# if SOLARIS
181 ill_t *ifp = fin->fin_ifp;
182# else
183 struct ifnet *ifp = fin->fin_ifp;
184# endif
185
186 /*
187 * calculate header size.
188 */
189 hlen = fin->fin_hlen;
190 if (fin->fin_off == 0) {
191 p = fin->fin_fi.fi_p;
192 if (p == IPPROTO_TCP)
193 hlen += MIN(sizeof(tcphdr_t), fin->fin_dlen);
194 else if (p == IPPROTO_UDP)
195 hlen += MIN(sizeof(udphdr_t), fin->fin_dlen);
196 else if (p == IPPROTO_ICMP) {
197 struct icmp *icmp;
198
199 icmp = (struct icmp *)fin->fin_dp;
200
201 /*
202 * For ICMP, if the packet is an error packet, also
203 * include the information about the packet which
204 * caused the error.
205 */
206 switch (icmp->icmp_type)
207 {
208 case ICMP_UNREACH :
209 case ICMP_SOURCEQUENCH :
210 case ICMP_REDIRECT :
211 case ICMP_TIMXCEED :
212 case ICMP_PARAMPROB :
213 hlen += MIN(sizeof(struct icmp) + 8,
214 fin->fin_dlen);
215 break;
216 default :
217 hlen += MIN(sizeof(struct icmp),
218 fin->fin_dlen);
219 break;
220 }
221 }
222 }
223 /*
224 * Get the interface number and name to which this packet is
225 * currently associated.
226 */
227# if SOLARIS
228 ipfl.fl_unit = (u_char)ifp->ill_ppa;
229 bcopy(ifp->ill_name, ipfl.fl_ifname, MIN(ifp->ill_name_length, 4));
230 mlen = (flags & FR_LOGBODY) ? MIN(msgdsize(m) - hlen, 128) : 0;
231# else
232# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
233 (defined(OpenBSD) && (OpenBSD >= 199603))
234 strncpy(ipfl.fl_ifname, ifp->if_xname, IFNAMSIZ);
235# else
236# ifndef linux
237 ipfl.fl_unit = (u_char)ifp->if_unit;
238# endif
239 if ((ipfl.fl_ifname[0] = ifp->if_name[0]))
240 if ((ipfl.fl_ifname[1] = ifp->if_name[1]))
241 if ((ipfl.fl_ifname[2] = ifp->if_name[2]))
242 ipfl.fl_ifname[3] = ifp->if_name[3];
243# endif
244 mlen = (flags & FR_LOGBODY) ? MIN(fin->fin_plen - hlen, 128) : 0;
245# endif
246 ipfl.fl_plen = (u_char)mlen;
247 ipfl.fl_hlen = (u_char)hlen;
248 ipfl.fl_rule = fin->fin_rule;
249 ipfl.fl_group = fin->fin_group;
250 if (fin->fin_fr != NULL)
251 ipfl.fl_loglevel = fin->fin_fr->fr_loglevel;
252 else
253 ipfl.fl_loglevel = 0xffff;
254 ipfl.fl_flags = flags;
255 ptrs[0] = (void *)&ipfl;
256 sizes[0] = sizeof(ipfl);
257 types[0] = 0;
258# if SOLARIS
259 /*
260 * Are we copied from the mblk or an aligned array ?
261 */
262 if (ip == (ip_t *)m->b_rptr) {
263 ptrs[1] = m;
264 sizes[1] = hlen + mlen;
265 types[1] = 1;
266 } else {
267 ptrs[1] = ip;
268 sizes[1] = hlen + mlen;
269 types[1] = 0;
270 }
271# else
272 ptrs[1] = m;
273 sizes[1] = hlen + mlen;
274 types[1] = 1;
275# endif
276 return ipllog(IPL_LOGIPF, fin, ptrs, sizes, types, 2);
277}
278
279
280/*
281 * ipllog
282 */
283int ipllog(dev, fin, items, itemsz, types, cnt)
284int dev;
285fr_info_t *fin;
286void **items;
287size_t *itemsz;
288int *types, cnt;
289{
290 caddr_t buf, s;
291 iplog_t *ipl;
292 size_t len;
293 int i;
294
295 /*
296 * Check to see if this log record has a CRC which matches the last
297 * record logged. If it does, just up the count on the previous one
298 * rather than create a new one.
299 */
300 MUTEX_ENTER(&ipl_mutex);
301 if (fin != NULL) {
302 if ((ipll[dev] != NULL) &&
303 bcmp((char *)fin, (char *)&iplcrc[dev], FI_CSIZE) == 0) {
304 ipll[dev]->ipl_count++;
305 MUTEX_EXIT(&ipl_mutex);
306 return 1;
307 }
308 bcopy((char *)fin, (char *)&iplcrc[dev], FI_CSIZE);
309 } else
310 bzero((char *)&iplcrc[dev], FI_CSIZE);
311 MUTEX_EXIT(&ipl_mutex);
312
313 /*
314 * Get the total amount of data to be logged.
315 */
316 for (i = 0, len = sizeof(iplog_t); i < cnt; i++)
317 len += itemsz[i];
318
319 /*
320 * check that we have space to record this information and can
321 * allocate that much.
322 */
323 KMALLOCS(buf, caddr_t, len);
324 if (!buf)
325 return 0;
326 MUTEX_ENTER(&ipl_mutex);
327 if ((iplused[dev] + len) > IPLLOGSIZE) {
328 MUTEX_EXIT(&ipl_mutex);
329 KFREES(buf, len);
330 return 0;
331 }
332 iplused[dev] += len;
333 MUTEX_EXIT(&ipl_mutex);
334
335 /*
336 * advance the log pointer to the next empty record and deduct the
337 * amount of space we're going to use.
338 */
339 ipl = (iplog_t *)buf;
340 ipl->ipl_magic = IPL_MAGIC;
341 ipl->ipl_count = 1;
342 ipl->ipl_next = NULL;
343 ipl->ipl_dsize = len;
344# if SOLARIS || defined(sun) || defined(linux)
345 uniqtime((struct timeval *)&ipl->ipl_sec);
346# else
347# if BSD >= 199306 || defined(__FreeBSD__) || defined(__sgi)
348 microtime((struct timeval *)&ipl->ipl_sec);
349# endif
350# endif
351
352 /*
353 * Loop through all the items to be logged, copying each one to the
354 * buffer. Use bcopy for normal data or the mb_t copyout routine.
355 */
356 for (i = 0, s = buf + sizeof(*ipl); i < cnt; i++) {
357 if (types[i] == 0)
358 bcopy(items[i], s, itemsz[i]);
359 else if (types[i] == 1) {
360# if SOLARIS
361 copyout_mblk(items[i], 0, itemsz[i], s);
362# else
363 m_copydata(items[i], 0, itemsz[i], s);
364# endif
365 }
366 s += itemsz[i];
367 }
368 MUTEX_ENTER(&ipl_mutex);
369 ipll[dev] = ipl;
370 *iplh[dev] = ipl;
371 iplh[dev] = &ipl->ipl_next;
372# if SOLARIS
373 cv_signal(&iplwait);
374 mutex_exit(&ipl_mutex);
375# else
376 MUTEX_EXIT(&ipl_mutex);
377# ifdef linux
378 wake_up_interruptible(&iplwait[dev]);
379# else
380 wakeup(&iplh[dev]);
381# endif
382# endif
383 return 1;
384}
385
386
387int ipflog_read(unit, uio)
388minor_t unit;
389struct uio *uio;
390{
391 size_t dlen, copied;
392 int error = 0;
393 iplog_t *ipl;
394# if defined(_KERNEL) && !SOLARIS
395 int s;
396# endif
397
398 /*
399 * Sanity checks. Make sure the minor # is valid and we're copying
400 * a valid chunk of data.
401 */
402 if (IPL_LOGMAX < unit)
403 return ENXIO;
404 if (!uio->uio_resid)
405 return 0;
406 if ((uio->uio_resid < sizeof(iplog_t)) ||
407 (uio->uio_resid > IPLLOGSIZE))
408 return EINVAL;
409
410 /*
411 * Lock the log so we can snapshot the variables. Wait for a signal
412 * if the log is empty.
413 */
414 SPL_NET(s);
415 MUTEX_ENTER(&ipl_mutex);
416
417 while (!iplused[unit] || !iplt[unit]) {
418# if SOLARIS && defined(_KERNEL)
419 if (!cv_wait_sig(&iplwait, &ipl_mutex)) {
420 MUTEX_EXIT(&ipl_mutex);
421 return EINTR;
422 }
423# else
424# ifdef linux
425 interruptible_sleep_on(&iplwait[unit]);
426 if (current->signal & ~current->blocked)
427 return -EINTR;
428# else
429 MUTEX_EXIT(&ipl_mutex);
430 SPL_X(s);
431 error = SLEEP(&iplh[unit], "ipl sleep");
432 if (error)
433 return error;
434 SPL_NET(s);
435 MUTEX_ENTER(&ipl_mutex);
436# endif /* linux */
437# endif /* SOLARIS */
438 }
439
440# if BSD >= 199306 || defined(__FreeBSD__)
441 uio->uio_rw = UIO_READ;
442# endif
443
444 for (copied = 0; (ipl = iplt[unit]); copied += dlen) {
445 dlen = ipl->ipl_dsize;
446 if (dlen > uio->uio_resid)
447 break;
448 /*
449 * Don't hold the mutex over the uiomove call.
450 */
451 iplt[unit] = ipl->ipl_next;
452 iplused[unit] -= dlen;
453 MUTEX_EXIT(&ipl_mutex);
454 SPL_X(s);
455 error = UIOMOVE((caddr_t)ipl, dlen, UIO_READ, uio);
456 if (error) {
457 SPL_NET(s);
458 MUTEX_ENTER(&ipl_mutex);
459 ipl->ipl_next = iplt[unit];
460 iplt[unit] = ipl;
461 iplused[unit] += dlen;
462 break;
463 }
464 KFREES((caddr_t)ipl, dlen);
465 SPL_NET(s);
466 MUTEX_ENTER(&ipl_mutex);
467 }
468 if (!iplt[unit]) {
469 iplused[unit] = 0;
470 iplh[unit] = &iplt[unit];
471 ipll[unit] = NULL;
472 }
473
474 MUTEX_EXIT(&ipl_mutex);
475 SPL_X(s);
476# ifdef linux
477 if (!error)
478 return (int)copied;
479 return -error;
480# else
481 return error;
482# endif
483}
484
485
486int ipflog_clear(unit)
487minor_t unit;
488{
489 iplog_t *ipl;
490 int used;
491
492 MUTEX_ENTER(&ipl_mutex);
493 while ((ipl = iplt[unit])) {
494 iplt[unit] = ipl->ipl_next;
495 KFREES((caddr_t)ipl, ipl->ipl_dsize);
496 }
497 iplh[unit] = &iplt[unit];
498 ipll[unit] = NULL;
499 used = iplused[unit];
500 iplused[unit] = 0;
501 bzero((char *)&iplcrc[unit], FI_CSIZE);
502 MUTEX_EXIT(&ipl_mutex);
503 return used;
504}
505#endif /* IPFILTER_LOG */
| 34# endif
35#endif
36#ifdef IPFILTER_LOG
37# ifndef SOLARIS
38# define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
39# endif
40# ifndef _KERNEL
41# include <stdio.h>
42# include <string.h>
43# include <stdlib.h>
44# include <ctype.h>
45# endif
46# include <sys/errno.h>
47# include <sys/types.h>
48# include <sys/file.h>
49# if __FreeBSD_version >= 220000 && defined(_KERNEL)
50# include <sys/fcntl.h>
51# include <sys/filio.h>
52# else
53# include <sys/ioctl.h>
54# endif
55# include <sys/time.h>
56# if defined(_KERNEL) && !defined(linux)
57# include <sys/systm.h>
58# endif
59# include <sys/uio.h>
60# if !SOLARIS
61# if (NetBSD > 199609) || (OpenBSD > 199603) || (__FreeBSD_version >= 300000)
62# include <sys/dirent.h>
63# else
64# include <sys/dir.h>
65# endif
66# ifndef linux
67# include <sys/mbuf.h>
68# endif
69# else
70# include <sys/filio.h>
71# include <sys/cred.h>
72# include <sys/ddi.h>
73# include <sys/sunddi.h>
74# include <sys/ksynch.h>
75# include <sys/kmem.h>
76# include <sys/mkdev.h>
77# include <sys/dditypes.h>
78# include <sys/cmn_err.h>
79# endif
80# ifndef linux
81# include <sys/protosw.h>
82# endif
83# include <sys/socket.h>
84
85# include <net/if.h>
86# ifdef sun
87# include <net/af.h>
88# endif
89# if __FreeBSD_version >= 300000
90# include <net/if_var.h>
91# endif
92# include <net/route.h>
93# include <netinet/in.h>
94# ifdef __sgi
95# include <sys/ddi.h>
96# ifdef IFF_DRVRLOCK /* IRIX6 */
97# include <sys/hashing.h>
98# endif
99# endif
100# if !defined(linux) && !(defined(__sgi) && !defined(IFF_DRVRLOCK)) /*IRIX<6*/
101# include <netinet/in_var.h>
102# endif
103# include <netinet/in_systm.h>
104# include <netinet/ip.h>
105# include <netinet/tcp.h>
106# include <netinet/udp.h>
107# include <netinet/ip_icmp.h>
108# ifndef linux
109# include <netinet/ip_var.h>
110# endif
111# ifndef _KERNEL
112# include <syslog.h>
113# endif
114# include "netinet/ip_compat.h"
115# include <netinet/tcpip.h>
116# include "netinet/ip_fil.h"
117# include "netinet/ip_proxy.h"
118# include "netinet/ip_nat.h"
119# include "netinet/ip_frag.h"
120# include "netinet/ip_state.h"
121# include "netinet/ip_auth.h"
122# if (__FreeBSD_version >= 300000)
123# include <sys/malloc.h>
124# endif
125
126# ifndef MIN
127# define MIN(a,b) (((a)<(b))?(a):(b))
128# endif
129
130
131# if SOLARIS || defined(__sgi)
132extern kmutex_t ipl_mutex;
133# if SOLARIS
134extern kcondvar_t iplwait;
135# endif
136# endif
137
138iplog_t **iplh[IPL_LOGMAX+1], *iplt[IPL_LOGMAX+1], *ipll[IPL_LOGMAX+1];
139size_t iplused[IPL_LOGMAX+1];
140static fr_info_t iplcrc[IPL_LOGMAX+1];
141# ifdef linux
142static struct wait_queue *iplwait[IPL_LOGMAX+1];
143# endif
144
145
146/*
147 * Initialise log buffers & pointers. Also iniialised the CRC to a local
148 * secret for use in calculating the "last log checksum".
149 */
150void ipflog_init()
151{
152 int i;
153
154 for (i = IPL_LOGMAX; i >= 0; i--) {
155 iplt[i] = NULL;
156 ipll[i] = NULL;
157 iplh[i] = &iplt[i];
158 iplused[i] = 0;
159 bzero((char *)&iplcrc[i], sizeof(iplcrc[i]));
160 }
161}
162
163
164/*
165 * ipflog
166 * Create a log record for a packet given that it has been triggered by a
167 * rule (or the default setting). Calculate the transport protocol header
168 * size using predetermined size of a couple of popular protocols and thus
169 * how much data to copy into the log, including part of the data body if
170 * requested.
171 */
172int ipflog(flags, ip, fin, m)
173u_int flags;
174ip_t *ip;
175fr_info_t *fin;
176mb_t *m;
177{
178 ipflog_t ipfl;
179 register size_t mlen, hlen;
180 size_t sizes[2];
181 void *ptrs[2];
182 int types[2];
183 u_char p;
184# if SOLARIS
185 ill_t *ifp = fin->fin_ifp;
186# else
187 struct ifnet *ifp = fin->fin_ifp;
188# endif
189
190 /*
191 * calculate header size.
192 */
193 hlen = fin->fin_hlen;
194 if (fin->fin_off == 0) {
195 p = fin->fin_fi.fi_p;
196 if (p == IPPROTO_TCP)
197 hlen += MIN(sizeof(tcphdr_t), fin->fin_dlen);
198 else if (p == IPPROTO_UDP)
199 hlen += MIN(sizeof(udphdr_t), fin->fin_dlen);
200 else if (p == IPPROTO_ICMP) {
201 struct icmp *icmp;
202
203 icmp = (struct icmp *)fin->fin_dp;
204
205 /*
206 * For ICMP, if the packet is an error packet, also
207 * include the information about the packet which
208 * caused the error.
209 */
210 switch (icmp->icmp_type)
211 {
212 case ICMP_UNREACH :
213 case ICMP_SOURCEQUENCH :
214 case ICMP_REDIRECT :
215 case ICMP_TIMXCEED :
216 case ICMP_PARAMPROB :
217 hlen += MIN(sizeof(struct icmp) + 8,
218 fin->fin_dlen);
219 break;
220 default :
221 hlen += MIN(sizeof(struct icmp),
222 fin->fin_dlen);
223 break;
224 }
225 }
226 }
227 /*
228 * Get the interface number and name to which this packet is
229 * currently associated.
230 */
231# if SOLARIS
232 ipfl.fl_unit = (u_char)ifp->ill_ppa;
233 bcopy(ifp->ill_name, ipfl.fl_ifname, MIN(ifp->ill_name_length, 4));
234 mlen = (flags & FR_LOGBODY) ? MIN(msgdsize(m) - hlen, 128) : 0;
235# else
236# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
237 (defined(OpenBSD) && (OpenBSD >= 199603))
238 strncpy(ipfl.fl_ifname, ifp->if_xname, IFNAMSIZ);
239# else
240# ifndef linux
241 ipfl.fl_unit = (u_char)ifp->if_unit;
242# endif
243 if ((ipfl.fl_ifname[0] = ifp->if_name[0]))
244 if ((ipfl.fl_ifname[1] = ifp->if_name[1]))
245 if ((ipfl.fl_ifname[2] = ifp->if_name[2]))
246 ipfl.fl_ifname[3] = ifp->if_name[3];
247# endif
248 mlen = (flags & FR_LOGBODY) ? MIN(fin->fin_plen - hlen, 128) : 0;
249# endif
250 ipfl.fl_plen = (u_char)mlen;
251 ipfl.fl_hlen = (u_char)hlen;
252 ipfl.fl_rule = fin->fin_rule;
253 ipfl.fl_group = fin->fin_group;
254 if (fin->fin_fr != NULL)
255 ipfl.fl_loglevel = fin->fin_fr->fr_loglevel;
256 else
257 ipfl.fl_loglevel = 0xffff;
258 ipfl.fl_flags = flags;
259 ptrs[0] = (void *)&ipfl;
260 sizes[0] = sizeof(ipfl);
261 types[0] = 0;
262# if SOLARIS
263 /*
264 * Are we copied from the mblk or an aligned array ?
265 */
266 if (ip == (ip_t *)m->b_rptr) {
267 ptrs[1] = m;
268 sizes[1] = hlen + mlen;
269 types[1] = 1;
270 } else {
271 ptrs[1] = ip;
272 sizes[1] = hlen + mlen;
273 types[1] = 0;
274 }
275# else
276 ptrs[1] = m;
277 sizes[1] = hlen + mlen;
278 types[1] = 1;
279# endif
280 return ipllog(IPL_LOGIPF, fin, ptrs, sizes, types, 2);
281}
282
283
284/*
285 * ipllog
286 */
287int ipllog(dev, fin, items, itemsz, types, cnt)
288int dev;
289fr_info_t *fin;
290void **items;
291size_t *itemsz;
292int *types, cnt;
293{
294 caddr_t buf, s;
295 iplog_t *ipl;
296 size_t len;
297 int i;
298
299 /*
300 * Check to see if this log record has a CRC which matches the last
301 * record logged. If it does, just up the count on the previous one
302 * rather than create a new one.
303 */
304 MUTEX_ENTER(&ipl_mutex);
305 if (fin != NULL) {
306 if ((ipll[dev] != NULL) &&
307 bcmp((char *)fin, (char *)&iplcrc[dev], FI_CSIZE) == 0) {
308 ipll[dev]->ipl_count++;
309 MUTEX_EXIT(&ipl_mutex);
310 return 1;
311 }
312 bcopy((char *)fin, (char *)&iplcrc[dev], FI_CSIZE);
313 } else
314 bzero((char *)&iplcrc[dev], FI_CSIZE);
315 MUTEX_EXIT(&ipl_mutex);
316
317 /*
318 * Get the total amount of data to be logged.
319 */
320 for (i = 0, len = sizeof(iplog_t); i < cnt; i++)
321 len += itemsz[i];
322
323 /*
324 * check that we have space to record this information and can
325 * allocate that much.
326 */
327 KMALLOCS(buf, caddr_t, len);
328 if (!buf)
329 return 0;
330 MUTEX_ENTER(&ipl_mutex);
331 if ((iplused[dev] + len) > IPLLOGSIZE) {
332 MUTEX_EXIT(&ipl_mutex);
333 KFREES(buf, len);
334 return 0;
335 }
336 iplused[dev] += len;
337 MUTEX_EXIT(&ipl_mutex);
338
339 /*
340 * advance the log pointer to the next empty record and deduct the
341 * amount of space we're going to use.
342 */
343 ipl = (iplog_t *)buf;
344 ipl->ipl_magic = IPL_MAGIC;
345 ipl->ipl_count = 1;
346 ipl->ipl_next = NULL;
347 ipl->ipl_dsize = len;
348# if SOLARIS || defined(sun) || defined(linux)
349 uniqtime((struct timeval *)&ipl->ipl_sec);
350# else
351# if BSD >= 199306 || defined(__FreeBSD__) || defined(__sgi)
352 microtime((struct timeval *)&ipl->ipl_sec);
353# endif
354# endif
355
356 /*
357 * Loop through all the items to be logged, copying each one to the
358 * buffer. Use bcopy for normal data or the mb_t copyout routine.
359 */
360 for (i = 0, s = buf + sizeof(*ipl); i < cnt; i++) {
361 if (types[i] == 0)
362 bcopy(items[i], s, itemsz[i]);
363 else if (types[i] == 1) {
364# if SOLARIS
365 copyout_mblk(items[i], 0, itemsz[i], s);
366# else
367 m_copydata(items[i], 0, itemsz[i], s);
368# endif
369 }
370 s += itemsz[i];
371 }
372 MUTEX_ENTER(&ipl_mutex);
373 ipll[dev] = ipl;
374 *iplh[dev] = ipl;
375 iplh[dev] = &ipl->ipl_next;
376# if SOLARIS
377 cv_signal(&iplwait);
378 mutex_exit(&ipl_mutex);
379# else
380 MUTEX_EXIT(&ipl_mutex);
381# ifdef linux
382 wake_up_interruptible(&iplwait[dev]);
383# else
384 wakeup(&iplh[dev]);
385# endif
386# endif
387 return 1;
388}
389
390
391int ipflog_read(unit, uio)
392minor_t unit;
393struct uio *uio;
394{
395 size_t dlen, copied;
396 int error = 0;
397 iplog_t *ipl;
398# if defined(_KERNEL) && !SOLARIS
399 int s;
400# endif
401
402 /*
403 * Sanity checks. Make sure the minor # is valid and we're copying
404 * a valid chunk of data.
405 */
406 if (IPL_LOGMAX < unit)
407 return ENXIO;
408 if (!uio->uio_resid)
409 return 0;
410 if ((uio->uio_resid < sizeof(iplog_t)) ||
411 (uio->uio_resid > IPLLOGSIZE))
412 return EINVAL;
413
414 /*
415 * Lock the log so we can snapshot the variables. Wait for a signal
416 * if the log is empty.
417 */
418 SPL_NET(s);
419 MUTEX_ENTER(&ipl_mutex);
420
421 while (!iplused[unit] || !iplt[unit]) {
422# if SOLARIS && defined(_KERNEL)
423 if (!cv_wait_sig(&iplwait, &ipl_mutex)) {
424 MUTEX_EXIT(&ipl_mutex);
425 return EINTR;
426 }
427# else
428# ifdef linux
429 interruptible_sleep_on(&iplwait[unit]);
430 if (current->signal & ~current->blocked)
431 return -EINTR;
432# else
433 MUTEX_EXIT(&ipl_mutex);
434 SPL_X(s);
435 error = SLEEP(&iplh[unit], "ipl sleep");
436 if (error)
437 return error;
438 SPL_NET(s);
439 MUTEX_ENTER(&ipl_mutex);
440# endif /* linux */
441# endif /* SOLARIS */
442 }
443
444# if BSD >= 199306 || defined(__FreeBSD__)
445 uio->uio_rw = UIO_READ;
446# endif
447
448 for (copied = 0; (ipl = iplt[unit]); copied += dlen) {
449 dlen = ipl->ipl_dsize;
450 if (dlen > uio->uio_resid)
451 break;
452 /*
453 * Don't hold the mutex over the uiomove call.
454 */
455 iplt[unit] = ipl->ipl_next;
456 iplused[unit] -= dlen;
457 MUTEX_EXIT(&ipl_mutex);
458 SPL_X(s);
459 error = UIOMOVE((caddr_t)ipl, dlen, UIO_READ, uio);
460 if (error) {
461 SPL_NET(s);
462 MUTEX_ENTER(&ipl_mutex);
463 ipl->ipl_next = iplt[unit];
464 iplt[unit] = ipl;
465 iplused[unit] += dlen;
466 break;
467 }
468 KFREES((caddr_t)ipl, dlen);
469 SPL_NET(s);
470 MUTEX_ENTER(&ipl_mutex);
471 }
472 if (!iplt[unit]) {
473 iplused[unit] = 0;
474 iplh[unit] = &iplt[unit];
475 ipll[unit] = NULL;
476 }
477
478 MUTEX_EXIT(&ipl_mutex);
479 SPL_X(s);
480# ifdef linux
481 if (!error)
482 return (int)copied;
483 return -error;
484# else
485 return error;
486# endif
487}
488
489
490int ipflog_clear(unit)
491minor_t unit;
492{
493 iplog_t *ipl;
494 int used;
495
496 MUTEX_ENTER(&ipl_mutex);
497 while ((ipl = iplt[unit])) {
498 iplt[unit] = ipl->ipl_next;
499 KFREES((caddr_t)ipl, ipl->ipl_dsize);
500 }
501 iplh[unit] = &iplt[unit];
502 ipll[unit] = NULL;
503 used = iplused[unit];
504 iplused[unit] = 0;
505 bzero((char *)&iplcrc[unit], FI_CSIZE);
506 MUTEX_EXIT(&ipl_mutex);
507 return used;
508}
509#endif /* IPFILTER_LOG */
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