2 * Copyright (c) 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
21 * savefile.c - supports offline use of tcpdump
22 * Extraction/creation by Jeffrey Mogul, DECWRL
23 * Modified by Steve McCanne, LBL.
25 * Used to save the received packet headers, after filtering, to
26 * a file, and then read them later.
27 * The first record in the file contains saved values for the machine
28 * dependent values so we can print the dump file on any architecture.
32 static const char rcsid[] _U_ =
33 "@(#) $Header: /tcpdump/master/libpcap/savefile.c,v 1.126.2.27 2007/07/19 06:20:53 guy Exp $ (LBL)";
48 #ifdef HAVE_OS_PROTO_H
53 * Standard libpcap format.
55 #define TCPDUMP_MAGIC 0xa1b2c3d4
58 * Alexey Kuznetzov's modified libpcap format.
60 #define KUZNETZOV_TCPDUMP_MAGIC 0xa1b2cd34
63 * Reserved for Francisco Mesquita <francisco.mesquita@radiomovel.pt>
64 * for another modified format.
66 #define FMESQUITA_TCPDUMP_MAGIC 0xa1b234cd
69 * Navtel Communcations' format, with nanosecond timestamps,
70 * as per a request from Dumas Hwang <dumas.hwang@navtelcom.com>.
72 #define NAVTEL_TCPDUMP_MAGIC 0xa12b3c4d
75 * Normal libpcap format, except for seconds/nanoseconds timestamps,
76 * as per a request by Ulf Lamping <ulf.lamping@web.de>
78 #define NSEC_TCPDUMP_MAGIC 0xa1b23c4d
81 * We use the "receiver-makes-right" approach to byte order,
82 * because time is at a premium when we are writing the file.
83 * In other words, the pcap_file_header and pcap_pkthdr,
84 * records are written in host byte order.
85 * Note that the bytes of packet data are written out in the order in
86 * which they were received, so multi-byte fields in packets are not
87 * written in host byte order, they're written in whatever order the
88 * sending machine put them in.
90 * ntoh[ls] aren't sufficient because we might need to swap on a big-endian
91 * machine (if the file was written in little-end order).
94 ((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff))
95 #define SWAPSHORT(y) \
96 ( (((y)&0xff)<<8) | ((u_short)((y)&0xff00)>>8) )
99 #define SFERR_BADVERSION 2
101 #define SFERR_EOF 4 /* not really an error, just a status */
104 * Setting O_BINARY on DOS/Windows is a bit tricky
107 #define SET_BINMODE(f) _setmode(_fileno(f), _O_BINARY)
109 #if defined(__HIGHC__)
110 #define SET_BINMODE(f) setmode(f, O_BINARY)
112 #define SET_BINMODE(f) setmode(fileno(f), O_BINARY)
117 * We don't write DLT_* values to the capture file header, because
118 * they're not the same on all platforms.
120 * Unfortunately, the various flavors of BSD have not always used the same
121 * numerical values for the same data types, and various patches to
122 * libpcap for non-BSD OSes have added their own DLT_* codes for link
123 * layer encapsulation types seen on those OSes, and those codes have had,
124 * in some cases, values that were also used, on other platforms, for other
125 * link layer encapsulation types.
127 * This means that capture files of a type whose numerical DLT_* code
128 * means different things on different BSDs, or with different versions
129 * of libpcap, can't always be read on systems other than those like
130 * the one running on the machine on which the capture was made.
132 * Instead, we define here a set of LINKTYPE_* codes, and map DLT_* codes
133 * to LINKTYPE_* codes when writing a savefile header, and map LINKTYPE_*
134 * codes to DLT_* codes when reading a savefile header.
136 * For those DLT_* codes that have, as far as we know, the same values on
137 * all platforms (DLT_NULL through DLT_FDDI), we define LINKTYPE_xxx as
138 * DLT_xxx; that way, captures of those types can still be read by
139 * versions of libpcap that map LINKTYPE_* values to DLT_* values, and
140 * captures of those types written by versions of libpcap that map DLT_
141 * values to LINKTYPE_ values can still be read by older versions
144 * The other LINKTYPE_* codes are given values starting at 100, in the
145 * hopes that no DLT_* code will be given one of those values.
147 * In order to ensure that a given LINKTYPE_* code's value will refer to
148 * the same encapsulation type on all platforms, you should not allocate
149 * a new LINKTYPE_* value without consulting "tcpdump-workers@tcpdump.org".
150 * The tcpdump developers will allocate a value for you, and will not
151 * subsequently allocate it to anybody else; that value will be added to
152 * the "pcap.h" in the tcpdump.org CVS repository, so that a future
153 * libpcap release will include it.
155 * You should, if possible, also contribute patches to libpcap and tcpdump
156 * to handle the new encapsulation type, so that they can also be checked
157 * into the tcpdump.org CVS repository and so that they will appear in
158 * future libpcap and tcpdump releases.
160 * Do *NOT* assume that any values after the largest value in this file
161 * are available; you might not have the most up-to-date version of this
162 * file, and new values after that one might have been assigned. Also,
163 * do *NOT* use any values below 100 - those might already have been
164 * taken by one (or more!) organizations.
166 #define LINKTYPE_NULL DLT_NULL
167 #define LINKTYPE_ETHERNET DLT_EN10MB /* also for 100Mb and up */
168 #define LINKTYPE_EXP_ETHERNET DLT_EN3MB /* 3Mb experimental Ethernet */
169 #define LINKTYPE_AX25 DLT_AX25
170 #define LINKTYPE_PRONET DLT_PRONET
171 #define LINKTYPE_CHAOS DLT_CHAOS
172 #define LINKTYPE_TOKEN_RING DLT_IEEE802 /* DLT_IEEE802 is used for Token Ring */
173 #define LINKTYPE_ARCNET DLT_ARCNET /* BSD-style headers */
174 #define LINKTYPE_SLIP DLT_SLIP
175 #define LINKTYPE_PPP DLT_PPP
176 #define LINKTYPE_FDDI DLT_FDDI
179 * LINKTYPE_PPP is for use when there might, or might not, be an RFC 1662
180 * PPP in HDLC-like framing header (with 0xff 0x03 before the PPP protocol
181 * field) at the beginning of the packet.
183 * This is for use when there is always such a header; the address field
184 * might be 0xff, for regular PPP, or it might be an address field for Cisco
185 * point-to-point with HDLC framing as per section 4.3.1 of RFC 1547 ("Cisco
186 * HDLC"). This is, for example, what you get with NetBSD's DLT_PPP_SERIAL.
188 * We give it the same value as NetBSD's DLT_PPP_SERIAL, in the hopes that
189 * nobody else will choose a DLT_ value of 50, and so that DLT_PPP_SERIAL
190 * captures will be written out with a link type that NetBSD's tcpdump
193 #define LINKTYPE_PPP_HDLC 50 /* PPP in HDLC-like framing */
195 #define LINKTYPE_PPP_ETHER 51 /* NetBSD PPP-over-Ethernet */
197 #define LINKTYPE_SYMANTEC_FIREWALL 99 /* Symantec Enterprise Firewall */
199 #define LINKTYPE_ATM_RFC1483 100 /* LLC/SNAP-encapsulated ATM */
200 #define LINKTYPE_RAW 101 /* raw IP */
201 #define LINKTYPE_SLIP_BSDOS 102 /* BSD/OS SLIP BPF header */
202 #define LINKTYPE_PPP_BSDOS 103 /* BSD/OS PPP BPF header */
203 #define LINKTYPE_C_HDLC 104 /* Cisco HDLC */
204 #define LINKTYPE_IEEE802_11 105 /* IEEE 802.11 (wireless) */
205 #define LINKTYPE_ATM_CLIP 106 /* Linux Classical IP over ATM */
206 #define LINKTYPE_FRELAY 107 /* Frame Relay */
207 #define LINKTYPE_LOOP 108 /* OpenBSD loopback */
208 #define LINKTYPE_ENC 109 /* OpenBSD IPSEC enc */
211 * These three types are reserved for future use.
213 #define LINKTYPE_LANE8023 110 /* ATM LANE + 802.3 */
214 #define LINKTYPE_HIPPI 111 /* NetBSD HIPPI */
215 #define LINKTYPE_HDLC 112 /* NetBSD HDLC framing */
217 #define LINKTYPE_LINUX_SLL 113 /* Linux cooked socket capture */
218 #define LINKTYPE_LTALK 114 /* Apple LocalTalk hardware */
219 #define LINKTYPE_ECONET 115 /* Acorn Econet */
222 * Reserved for use with OpenBSD ipfilter.
224 #define LINKTYPE_IPFILTER 116
226 #define LINKTYPE_PFLOG 117 /* OpenBSD DLT_PFLOG */
227 #define LINKTYPE_CISCO_IOS 118 /* For Cisco-internal use */
228 #define LINKTYPE_PRISM_HEADER 119 /* 802.11+Prism II monitor mode */
229 #define LINKTYPE_AIRONET_HEADER 120 /* FreeBSD Aironet driver stuff */
232 * Reserved for Siemens HiPath HDLC.
234 #define LINKTYPE_HHDLC 121
236 #define LINKTYPE_IP_OVER_FC 122 /* RFC 2625 IP-over-Fibre Channel */
237 #define LINKTYPE_SUNATM 123 /* Solaris+SunATM */
240 * Reserved as per request from Kent Dahlgren <kent@praesum.com>
243 #define LINKTYPE_RIO 124 /* RapidIO */
244 #define LINKTYPE_PCI_EXP 125 /* PCI Express */
245 #define LINKTYPE_AURORA 126 /* Xilinx Aurora link layer */
247 #define LINKTYPE_IEEE802_11_RADIO 127 /* 802.11 plus BSD radio header */
250 * Reserved for the TZSP encapsulation, as per request from
251 * Chris Waters <chris.waters@networkchemistry.com>
252 * TZSP is a generic encapsulation for any other link type,
253 * which includes a means to include meta-information
254 * with the packet, e.g. signal strength and channel
255 * for 802.11 packets.
257 #define LINKTYPE_TZSP 128 /* Tazmen Sniffer Protocol */
259 #define LINKTYPE_ARCNET_LINUX 129 /* Linux-style headers */
262 * Juniper-private data link types, as per request from
263 * Hannes Gredler <hannes@juniper.net>. The corresponding
264 * DLT_s are used for passing on chassis-internal
265 * metainformation such as QOS profiles, etc..
267 #define LINKTYPE_JUNIPER_MLPPP 130
268 #define LINKTYPE_JUNIPER_MLFR 131
269 #define LINKTYPE_JUNIPER_ES 132
270 #define LINKTYPE_JUNIPER_GGSN 133
271 #define LINKTYPE_JUNIPER_MFR 134
272 #define LINKTYPE_JUNIPER_ATM2 135
273 #define LINKTYPE_JUNIPER_SERVICES 136
274 #define LINKTYPE_JUNIPER_ATM1 137
276 #define LINKTYPE_APPLE_IP_OVER_IEEE1394 138 /* Apple IP-over-IEEE 1394 cooked header */
278 #define LINKTYPE_MTP2_WITH_PHDR 139
279 #define LINKTYPE_MTP2 140
280 #define LINKTYPE_MTP3 141
281 #define LINKTYPE_SCCP 142
283 #define LINKTYPE_DOCSIS 143 /* DOCSIS MAC frames */
285 #define LINKTYPE_LINUX_IRDA 144 /* Linux-IrDA */
288 * Reserved for IBM SP switch and IBM Next Federation switch.
290 #define LINKTYPE_IBM_SP 145
291 #define LINKTYPE_IBM_SN 146
294 * Reserved for private use. If you have some link-layer header type
295 * that you want to use within your organization, with the capture files
296 * using that link-layer header type not ever be sent outside your
297 * organization, you can use these values.
299 * No libpcap release will use these for any purpose, nor will any
300 * tcpdump release use them, either.
302 * Do *NOT* use these in capture files that you expect anybody not using
303 * your private versions of capture-file-reading tools to read; in
304 * particular, do *NOT* use them in products, otherwise you may find that
305 * people won't be able to use tcpdump, or snort, or Ethereal, or... to
306 * read capture files from your firewall/intrusion detection/traffic
307 * monitoring/etc. appliance, or whatever product uses that LINKTYPE_ value,
308 * and you may also find that the developers of those applications will
309 * not accept patches to let them read those files.
311 * Also, do not use them if somebody might send you a capture using them
312 * for *their* private type and tools using them for *your* private type
313 * would have to read them.
315 * Instead, in those cases, ask "tcpdump-workers@tcpdump.org" for a new DLT_
316 * and LINKTYPE_ value, as per the comment in pcap-bpf.h, and use the type
319 #define LINKTYPE_USER0 147
320 #define LINKTYPE_USER1 148
321 #define LINKTYPE_USER2 149
322 #define LINKTYPE_USER3 150
323 #define LINKTYPE_USER4 151
324 #define LINKTYPE_USER5 152
325 #define LINKTYPE_USER6 153
326 #define LINKTYPE_USER7 154
327 #define LINKTYPE_USER8 155
328 #define LINKTYPE_USER9 156
329 #define LINKTYPE_USER10 157
330 #define LINKTYPE_USER11 158
331 #define LINKTYPE_USER12 159
332 #define LINKTYPE_USER13 160
333 #define LINKTYPE_USER14 161
334 #define LINKTYPE_USER15 162
337 * For future use with 802.11 captures - defined by AbsoluteValue
338 * Systems to store a number of bits of link-layer information
339 * including radio information:
341 * http://www.shaftnet.org/~pizza/software/capturefrm.txt
343 * but could and arguably should also be used by non-AVS Linux
344 * 802.11 drivers; that may happen in the future.
346 #define LINKTYPE_IEEE802_11_RADIO_AVS 163 /* 802.11 plus AVS radio header */
349 * Juniper-private data link type, as per request from
350 * Hannes Gredler <hannes@juniper.net>. The corresponding
351 * DLT_s are used for passing on chassis-internal
352 * metainformation such as QOS profiles, etc..
354 #define LINKTYPE_JUNIPER_MONITOR 164
357 * Reserved for BACnet MS/TP.
359 #define LINKTYPE_BACNET_MS_TP 165
362 * Another PPP variant as per request from Karsten Keil <kkeil@suse.de>.
364 * This is used in some OSes to allow a kernel socket filter to distinguish
365 * between incoming and outgoing packets, on a socket intended to
366 * supply pppd with outgoing packets so it can do dial-on-demand and
367 * hangup-on-lack-of-demand; incoming packets are filtered out so they
368 * don't cause pppd to hold the connection up (you don't want random
369 * input packets such as port scans, packets from old lost connections,
370 * etc. to force the connection to stay up).
372 * The first byte of the PPP header (0xff03) is modified to accomodate
373 * the direction - 0x00 = IN, 0x01 = OUT.
375 #define LINKTYPE_PPP_PPPD 166
378 * Juniper-private data link type, as per request from
379 * Hannes Gredler <hannes@juniper.net>. The DLT_s are used
380 * for passing on chassis-internal metainformation such as
381 * QOS profiles, cookies, etc..
383 #define LINKTYPE_JUNIPER_PPPOE 167
384 #define LINKTYPE_JUNIPER_PPPOE_ATM 168
386 #define LINKTYPE_GPRS_LLC 169 /* GPRS LLC */
387 #define LINKTYPE_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */
388 #define LINKTYPE_GPF_F 171 /* GPF-T (ITU-T G.7041/Y.1303) */
391 * Requested by Oolan Zimmer <oz@gcom.com> for use in Gcom's T1/E1 line
392 * monitoring equipment.
394 #define LINKTYPE_GCOM_T1E1 172
395 #define LINKTYPE_GCOM_SERIAL 173
398 * Juniper-private data link type, as per request from
399 * Hannes Gredler <hannes@juniper.net>. The DLT_ is used
400 * for internal communication to Physical Interface Cards (PIC)
402 #define LINKTYPE_JUNIPER_PIC_PEER 174
405 * Link types requested by Gregor Maier <gregor@endace.com> of Endace
406 * Measurement Systems. They add an ERF header (see
407 * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of
408 * the link-layer header.
410 #define LINKTYPE_ERF_ETH 175 /* Ethernet */
411 #define LINKTYPE_ERF_POS 176 /* Packet-over-SONET */
414 * Requested by Daniele Orlandi <daniele@orlandi.com> for raw LAPD
415 * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header
416 * includes additional information before the LAPD header, so it's
417 * not necessarily a generic LAPD header.
419 #define LINKTYPE_LINUX_LAPD 177
422 * Juniper-private data link type, as per request from
423 * Hannes Gredler <hannes@juniper.net>.
424 * The Link Types are used for prepending meta-information
425 * like interface index, interface name
426 * before standard Ethernet, PPP, Frelay & C-HDLC Frames
428 #define LINKTYPE_JUNIPER_ETHER 178
429 #define LINKTYPE_JUNIPER_PPP 179
430 #define LINKTYPE_JUNIPER_FRELAY 180
431 #define LINKTYPE_JUNIPER_CHDLC 181
434 * Multi Link Frame Relay (FRF.16)
436 #define LINKTYPE_MFR 182
439 * Juniper-private data link type, as per request from
440 * Hannes Gredler <hannes@juniper.net>.
441 * The DLT_ is used for internal communication with a
442 * voice Adapter Card (PIC)
444 #define LINKTYPE_JUNIPER_VP 183
448 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
449 * Every frame contains a 32bit A429 label.
450 * More documentation on Arinc 429 can be found at
451 * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf
453 #define LINKTYPE_A429 184
456 * Arinc 653 Interpartition Communication messages.
457 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
458 * Please refer to the A653-1 standard for more information.
460 #define LINKTYPE_A653_ICM 185
463 * USB packets, beginning with a USB setup header; requested by
464 * Paolo Abeni <paolo.abeni@email.it>.
466 #define LINKTYPE_USB 186
469 * Bluetooth HCI UART transport layer (part H:4); requested by
472 #define LINKTYPE_BLUETOOTH_HCI_H4 187
475 * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz
476 * <cruz_petagay@bah.com>.
478 #define LINKTYPE_IEEE802_16_MAC_CPS 188
481 * USB packets, beginning with a Linux USB header; requested by
482 * Paolo Abeni <paolo.abeni@email.it>.
484 #define LINKTYPE_USB_LINUX 189
487 * Controller Area Network (CAN) v. 2.0B packets.
488 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
489 * Used to dump CAN packets coming from a CAN Vector board.
490 * More documentation on the CAN v2.0B frames can be found at
491 * http://www.can-cia.org/downloads/?269
493 #define LINKTYPE_CAN20B 190
496 * IEEE 802.15.4, with address fields padded, as is done by Linux
497 * drivers; requested by Juergen Schimmer.
499 #define LINKTYPE_IEEE802_15_4_LINUX 191
502 * Per Packet Information encapsulated packets.
503 * LINKTYPE_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
505 #define LINKTYPE_PPI 192
508 * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header;
509 * requested by Charles Clancy.
511 #define LINKTYPE_IEEE802_16_MAC_CPS_RADIO 193
514 * Juniper-private data link type, as per request from
515 * Hannes Gredler <hannes@juniper.net>.
516 * The DLT_ is used for internal communication with a
517 * integrated service module (ISM).
519 #define LINKTYPE_JUNIPER_ISM 194
522 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
523 * nothing); requested by Mikko Saarnivala <mikko.saarnivala@sensinode.com>.
525 #define LINKTYPE_IEEE802_15_4 195
528 * Various link-layer types, with a pseudo-header, for SITA
529 * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com).
531 #define LINKTYPE_SITA 196
534 static struct linktype_map {
539 * These DLT_* codes have LINKTYPE_* codes with values identical
540 * to the values of the corresponding DLT_* code.
542 { DLT_NULL, LINKTYPE_NULL },
543 { DLT_EN10MB, LINKTYPE_ETHERNET },
544 { DLT_EN3MB, LINKTYPE_EXP_ETHERNET },
545 { DLT_AX25, LINKTYPE_AX25 },
546 { DLT_PRONET, LINKTYPE_PRONET },
547 { DLT_CHAOS, LINKTYPE_CHAOS },
548 { DLT_IEEE802, LINKTYPE_TOKEN_RING },
549 { DLT_ARCNET, LINKTYPE_ARCNET },
550 { DLT_SLIP, LINKTYPE_SLIP },
551 { DLT_PPP, LINKTYPE_PPP },
552 { DLT_FDDI, LINKTYPE_FDDI },
555 * These DLT_* codes have different values on different
556 * platforms; we map them to LINKTYPE_* codes that
557 * have values that should never be equal to any DLT_*
561 /* BSD/OS Frame Relay */
562 { DLT_FR, LINKTYPE_FRELAY },
565 { DLT_SYMANTEC_FIREWALL, LINKTYPE_SYMANTEC_FIREWALL },
566 { DLT_ATM_RFC1483, LINKTYPE_ATM_RFC1483 },
567 { DLT_RAW, LINKTYPE_RAW },
568 { DLT_SLIP_BSDOS, LINKTYPE_SLIP_BSDOS },
569 { DLT_PPP_BSDOS, LINKTYPE_PPP_BSDOS },
571 /* BSD/OS Cisco HDLC */
572 { DLT_C_HDLC, LINKTYPE_C_HDLC },
575 * These DLT_* codes are not on all platforms, but, so far,
576 * there don't appear to be any platforms that define
577 * other codes with those values; we map them to
578 * different LINKTYPE_* values anyway, just in case.
581 /* Linux ATM Classical IP */
582 { DLT_ATM_CLIP, LINKTYPE_ATM_CLIP },
584 /* NetBSD sync/async serial PPP (or Cisco HDLC) */
585 { DLT_PPP_SERIAL, LINKTYPE_PPP_HDLC },
587 /* NetBSD PPP over Ethernet */
588 { DLT_PPP_ETHER, LINKTYPE_PPP_ETHER },
590 /* IEEE 802.11 wireless */
591 { DLT_IEEE802_11, LINKTYPE_IEEE802_11 },
594 { DLT_FRELAY, LINKTYPE_FRELAY },
596 /* OpenBSD loopback */
597 { DLT_LOOP, LINKTYPE_LOOP },
599 /* Linux cooked socket capture */
600 { DLT_LINUX_SLL, LINKTYPE_LINUX_SLL },
602 /* Apple LocalTalk hardware */
603 { DLT_LTALK, LINKTYPE_LTALK },
606 { DLT_ECONET, LINKTYPE_ECONET },
608 /* OpenBSD DLT_PFLOG */
609 { DLT_PFLOG, LINKTYPE_PFLOG },
611 /* For Cisco-internal use */
612 { DLT_CISCO_IOS, LINKTYPE_CISCO_IOS },
614 /* Prism II monitor-mode header plus 802.11 header */
615 { DLT_PRISM_HEADER, LINKTYPE_PRISM_HEADER },
617 /* FreeBSD Aironet driver stuff */
618 { DLT_AIRONET_HEADER, LINKTYPE_AIRONET_HEADER },
620 /* Siemens HiPath HDLC */
621 { DLT_HHDLC, LINKTYPE_HHDLC },
623 /* RFC 2625 IP-over-Fibre Channel */
624 { DLT_IP_OVER_FC, LINKTYPE_IP_OVER_FC },
627 { DLT_SUNATM, LINKTYPE_SUNATM },
630 { DLT_RIO, LINKTYPE_RIO },
633 { DLT_PCI_EXP, LINKTYPE_PCI_EXP },
635 /* Xilinx Aurora link layer */
636 { DLT_AURORA, LINKTYPE_AURORA },
638 /* 802.11 plus BSD radio header */
639 { DLT_IEEE802_11_RADIO, LINKTYPE_IEEE802_11_RADIO },
641 /* Tazmen Sniffer Protocol */
642 { DLT_TZSP, LINKTYPE_TZSP },
644 /* Arcnet with Linux-style link-layer headers */
645 { DLT_ARCNET_LINUX, LINKTYPE_ARCNET_LINUX },
647 /* Juniper-internal chassis encapsulation */
648 { DLT_JUNIPER_MLPPP, LINKTYPE_JUNIPER_MLPPP },
649 { DLT_JUNIPER_MLFR, LINKTYPE_JUNIPER_MLFR },
650 { DLT_JUNIPER_ES, LINKTYPE_JUNIPER_ES },
651 { DLT_JUNIPER_GGSN, LINKTYPE_JUNIPER_GGSN },
652 { DLT_JUNIPER_MFR, LINKTYPE_JUNIPER_MFR },
653 { DLT_JUNIPER_ATM2, LINKTYPE_JUNIPER_ATM2 },
654 { DLT_JUNIPER_SERVICES, LINKTYPE_JUNIPER_SERVICES },
655 { DLT_JUNIPER_ATM1, LINKTYPE_JUNIPER_ATM1 },
657 /* Apple IP-over-IEEE 1394 cooked header */
658 { DLT_APPLE_IP_OVER_IEEE1394, LINKTYPE_APPLE_IP_OVER_IEEE1394 },
661 { DLT_MTP2_WITH_PHDR, LINKTYPE_MTP2_WITH_PHDR },
662 { DLT_MTP2, LINKTYPE_MTP2 },
663 { DLT_MTP3, LINKTYPE_MTP3 },
664 { DLT_SCCP, LINKTYPE_SCCP },
666 /* DOCSIS MAC frames */
667 { DLT_DOCSIS, LINKTYPE_DOCSIS },
669 /* IrDA IrLAP packets + Linux-cooked header */
670 { DLT_LINUX_IRDA, LINKTYPE_LINUX_IRDA },
672 /* IBM SP and Next Federation switches */
673 { DLT_IBM_SP, LINKTYPE_IBM_SP },
674 { DLT_IBM_SN, LINKTYPE_IBM_SN },
676 /* 802.11 plus AVS radio header */
677 { DLT_IEEE802_11_RADIO_AVS, LINKTYPE_IEEE802_11_RADIO_AVS },
680 * Any platform that defines additional DLT_* codes should:
682 * request a LINKTYPE_* code and value from tcpdump.org,
685 * add, in their version of libpcap, an entry to map
686 * those DLT_* codes to the corresponding LINKTYPE_*
689 * redefine, in their "net/bpf.h", any DLT_* values
690 * that collide with the values used by their additional
691 * DLT_* codes, to remove those collisions (but without
692 * making them collide with any of the LINKTYPE_*
693 * values equal to 50 or above; they should also avoid
694 * defining DLT_* values that collide with those
695 * LINKTYPE_* values, either).
698 /* Juniper-internal chassis encapsulation */
699 { DLT_JUNIPER_MONITOR, LINKTYPE_JUNIPER_MONITOR },
702 { DLT_BACNET_MS_TP, LINKTYPE_BACNET_MS_TP },
704 /* PPP for pppd, with direction flag in the PPP header */
705 { DLT_PPP_PPPD, LINKTYPE_PPP_PPPD},
707 /* Juniper-internal chassis encapsulation */
708 { DLT_JUNIPER_PPPOE, LINKTYPE_JUNIPER_PPPOE },
709 { DLT_JUNIPER_PPPOE_ATM,LINKTYPE_JUNIPER_PPPOE_ATM },
712 { DLT_GPRS_LLC, LINKTYPE_GPRS_LLC },
714 /* Transparent Generic Framing Procedure (ITU-T G.7041/Y.1303) */
715 { DLT_GPF_T, LINKTYPE_GPF_T },
717 /* Framed Generic Framing Procedure (ITU-T G.7041/Y.1303) */
718 { DLT_GPF_F, LINKTYPE_GPF_F },
720 { DLT_GCOM_T1E1, LINKTYPE_GCOM_T1E1 },
721 { DLT_GCOM_SERIAL, LINKTYPE_GCOM_SERIAL },
723 /* Juniper-internal chassis encapsulation */
724 { DLT_JUNIPER_PIC_PEER, LINKTYPE_JUNIPER_PIC_PEER },
727 { DLT_ERF_ETH, LINKTYPE_ERF_ETH },
728 { DLT_ERF_POS, LINKTYPE_ERF_POS },
731 { DLT_LINUX_LAPD, LINKTYPE_LINUX_LAPD },
733 /* Juniper meta-information before Ether, PPP, Frame Relay, C-HDLC Frames */
734 { DLT_JUNIPER_ETHER, LINKTYPE_JUNIPER_ETHER },
735 { DLT_JUNIPER_PPP, LINKTYPE_JUNIPER_PPP },
736 { DLT_JUNIPER_FRELAY, LINKTYPE_JUNIPER_FRELAY },
737 { DLT_JUNIPER_CHDLC, LINKTYPE_JUNIPER_CHDLC },
739 /* Multi Link Frame Relay (FRF.16) */
740 { DLT_MFR, LINKTYPE_MFR },
742 /* Juniper Voice PIC */
743 { DLT_JUNIPER_VP, LINKTYPE_JUNIPER_VP },
745 /* Controller Area Network (CAN) v2.0B */
746 { DLT_A429, LINKTYPE_A429 },
748 /* Arinc 653 Interpartition Communication messages */
749 { DLT_A653_ICM, LINKTYPE_A653_ICM },
752 { DLT_USB, LINKTYPE_USB },
754 /* Bluetooth HCI UART transport layer */
755 { DLT_BLUETOOTH_HCI_H4, LINKTYPE_BLUETOOTH_HCI_H4 },
757 /* IEEE 802.16 MAC Common Part Sublayer */
758 { DLT_IEEE802_16_MAC_CPS, LINKTYPE_IEEE802_16_MAC_CPS },
760 /* USB with Linux header */
761 { DLT_USB_LINUX, LINKTYPE_USB_LINUX },
763 /* Controller Area Network (CAN) v2.0B */
764 { DLT_CAN20B, LINKTYPE_CAN20B },
766 /* IEEE 802.15.4 with address fields padded */
767 { DLT_IEEE802_15_4_LINUX, LINKTYPE_IEEE802_15_4_LINUX },
769 /* Per Packet Information encapsulated packets */
770 { DLT_PPI, LINKTYPE_PPI },
772 /* IEEE 802.16 MAC Common Part Sublayer plus radiotap header */
773 { DLT_IEEE802_16_MAC_CPS_RADIO, LINKTYPE_IEEE802_16_MAC_CPS_RADIO },
775 /* Juniper Voice ISM */
776 { DLT_JUNIPER_ISM, LINKTYPE_JUNIPER_ISM },
778 /* IEEE 802.15.4 exactly as it appears in the spec */
779 { DLT_IEEE802_15_4, LINKTYPE_IEEE802_15_4 },
781 /* Various link-layer types for SITA */
782 { DLT_SITA, LINKTYPE_SITA },
788 dlt_to_linktype(int dlt)
792 for (i = 0; map[i].dlt != -1; i++) {
793 if (map[i].dlt == dlt)
794 return (map[i].linktype);
798 * If we don't have a mapping for this DLT_ code, return an
799 * error; that means that the table above needs to have an
806 linktype_to_dlt(int linktype)
810 for (i = 0; map[i].linktype != -1; i++) {
811 if (map[i].linktype == linktype)
816 * If we don't have an entry for this link type, return
817 * the link type value; it may be a DLT_ value from an
818 * older version of libpcap.
824 sf_write_header(FILE *fp, int linktype, int thiszone, int snaplen)
826 struct pcap_file_header hdr;
828 hdr.magic = TCPDUMP_MAGIC;
829 hdr.version_major = PCAP_VERSION_MAJOR;
830 hdr.version_minor = PCAP_VERSION_MINOR;
832 hdr.thiszone = thiszone;
833 hdr.snaplen = snaplen;
835 hdr.linktype = linktype;
837 if (fwrite((char *)&hdr, sizeof(hdr), 1, fp) != 1)
844 swap_hdr(struct pcap_file_header *hp)
846 hp->version_major = SWAPSHORT(hp->version_major);
847 hp->version_minor = SWAPSHORT(hp->version_minor);
848 hp->thiszone = SWAPLONG(hp->thiszone);
849 hp->sigfigs = SWAPLONG(hp->sigfigs);
850 hp->snaplen = SWAPLONG(hp->snaplen);
851 hp->linktype = SWAPLONG(hp->linktype);
855 sf_getnonblock(pcap_t *p, char *errbuf)
858 * This is a savefile, not a live capture file, so never say
859 * it's in non-blocking mode.
865 sf_setnonblock(pcap_t *p, int nonblock, char *errbuf)
868 * This is a savefile, not a live capture file, so ignore
869 * requests to put it in non-blocking mode.
875 sf_stats(pcap_t *p, struct pcap_stat *ps)
877 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
878 "Statistics aren't available from savefiles");
883 sf_inject(pcap_t *p, const void *buf _U_, size_t size _U_)
885 strlcpy(p->errbuf, "Sending packets isn't supported on savefiles",
891 * Set direction flag: Which packets do we accept on a forwarding
892 * single device? IN, OUT or both?
895 sf_setdirection(pcap_t *p, pcap_direction_t d)
897 snprintf(p->errbuf, sizeof(p->errbuf),
898 "Setting direction is not supported on savefiles");
905 if (p->sf.rfile != stdin)
906 (void)fclose(p->sf.rfile);
907 if (p->sf.base != NULL)
912 pcap_open_offline(const char *fname, char *errbuf)
917 if (fname[0] == '-' && fname[1] == '\0')
920 #if defined(WIN32) || defined(MSDOS)
922 * We're reading from the standard input, so put it in binary
923 * mode, as savefiles are binary files.
929 #if !defined(WIN32) && !defined(MSDOS)
930 fp = fopen(fname, "r");
932 fp = fopen(fname, "rb");
935 snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s", fname,
936 pcap_strerror(errno));
940 p = pcap_fopen_offline(fp, errbuf);
949 pcap_fopen_offline(FILE *fp, char *errbuf)
952 struct pcap_file_header hdr;
957 p = (pcap_t *)malloc(sizeof(*p));
959 strlcpy(errbuf, "out of swap", PCAP_ERRBUF_SIZE);
963 memset((char *)p, 0, sizeof(*p));
965 amt_read = fread((char *)&hdr, 1, sizeof(hdr), fp);
966 if (amt_read != sizeof(hdr)) {
968 snprintf(errbuf, PCAP_ERRBUF_SIZE,
969 "error reading dump file: %s",
970 pcap_strerror(errno));
972 snprintf(errbuf, PCAP_ERRBUF_SIZE,
973 "truncated dump file; tried to read %lu file header bytes, only got %lu",
974 (unsigned long)sizeof(hdr),
975 (unsigned long)amt_read);
980 if (magic != TCPDUMP_MAGIC && magic != KUZNETZOV_TCPDUMP_MAGIC) {
981 magic = SWAPLONG(magic);
982 if (magic != TCPDUMP_MAGIC && magic != KUZNETZOV_TCPDUMP_MAGIC) {
983 snprintf(errbuf, PCAP_ERRBUF_SIZE,
984 "bad dump file format");
990 if (magic == KUZNETZOV_TCPDUMP_MAGIC) {
992 * XXX - the patch that's in some versions of libpcap
993 * changes the packet header but not the magic number,
994 * and some other versions with this magic number have
995 * some extra debugging information in the packet header;
996 * we'd have to use some hacks^H^H^H^H^Hheuristics to
997 * detect those variants.
999 * Ethereal does that, but it does so by trying to read
1000 * the first two packets of the file with each of the
1001 * record header formats. That currently means it seeks
1002 * backwards and retries the reads, which doesn't work
1003 * on pipes. We want to be able to read from a pipe, so
1004 * that strategy won't work; we'd have to buffer some
1005 * data ourselves and read from that buffer in order to
1008 p->sf.hdrsize = sizeof(struct pcap_sf_patched_pkthdr);
1010 p->sf.hdrsize = sizeof(struct pcap_sf_pkthdr);
1011 if (hdr.version_major < PCAP_VERSION_MAJOR) {
1012 snprintf(errbuf, PCAP_ERRBUF_SIZE, "archaic file format");
1015 p->tzoff = hdr.thiszone;
1016 p->snapshot = hdr.snaplen;
1017 p->linktype = linktype_to_dlt(hdr.linktype);
1018 if (magic == KUZNETZOV_TCPDUMP_MAGIC && p->linktype == DLT_EN10MB) {
1020 * This capture might have been done in raw mode or cooked
1023 * If it was done in cooked mode, p->snapshot was passed
1024 * to recvfrom() as the buffer size, meaning that the
1025 * most packet data that would be copied would be
1026 * p->snapshot. However, a faked Ethernet header would
1027 * then have been added to it, so the most data that would
1028 * be in a packet in the file would be p->snapshot + 14.
1030 * We can't easily tell whether the capture was done in
1031 * raw mode or cooked mode, so we'll assume it was
1032 * cooked mode, and add 14 to the snapshot length. That
1033 * means that, for a raw capture, the snapshot length will
1034 * be misleading if you use it to figure out why a capture
1035 * doesn't have all the packet data, but there's not much
1036 * we can do to avoid that.
1042 p->bufsize = hdr.snaplen;
1044 /* Allocate the space for pcap_pkthdr as well. It will be used by pcap_read_ex */
1045 p->bufsize = hdr.snaplen+sizeof(struct pcap_pkthdr);
1048 /* Align link header as required for proper data alignment */
1049 /* XXX should handle all types */
1050 switch (p->linktype) {
1057 linklen = 13 + 8; /* fddi_header + llc */
1067 p->bufsize = BPF_MAXBUFSIZE;
1068 p->sf.base = (u_char *)malloc(p->bufsize + BPF_ALIGNMENT);
1069 if (p->sf.base == NULL) {
1070 strlcpy(errbuf, "out of swap", PCAP_ERRBUF_SIZE);
1073 p->buffer = p->sf.base + BPF_ALIGNMENT - (linklen % BPF_ALIGNMENT);
1074 p->sf.version_major = hdr.version_major;
1075 p->sf.version_minor = hdr.version_minor;
1077 /* Padding only needed for live capture fcode */
1082 * We interchanged the caplen and len fields at version 2.3,
1083 * in order to match the bpf header layout. But unfortunately
1084 * some files were written with version 2.3 in their headers
1085 * but without the interchanged fields.
1087 * In addition, DG/UX tcpdump writes out files with a version
1088 * number of 543.0, and with the caplen and len fields in the
1091 switch (hdr.version_major) {
1094 if (hdr.version_minor < 3)
1095 p->sf.lengths_swapped = SWAPPED;
1096 else if (hdr.version_minor == 3)
1097 p->sf.lengths_swapped = MAYBE_SWAPPED;
1099 p->sf.lengths_swapped = NOT_SWAPPED;
1103 p->sf.lengths_swapped = SWAPPED;
1107 p->sf.lengths_swapped = NOT_SWAPPED;
1111 #if !defined(WIN32) && !defined(MSDOS)
1113 * You can do "select()" and "poll()" on plain files on most
1114 * platforms, and should be able to do so on pipes.
1116 * You can't do "select()" on anything other than sockets in
1117 * Windows, so, on Win32 systems, we don't have "selectable_fd".
1119 p->selectable_fd = fileno(fp);
1122 p->read_op = pcap_offline_read;
1123 p->inject_op = sf_inject;
1124 p->setfilter_op = install_bpf_program;
1125 p->setdirection_op = sf_setdirection;
1126 p->set_datalink_op = NULL; /* we don't support munging link-layer headers */
1127 p->getnonblock_op = sf_getnonblock;
1128 p->setnonblock_op = sf_setnonblock;
1129 p->stats_op = sf_stats;
1130 p->close_op = sf_close;
1139 * Read sf_readfile and return the next packet. Return the header in hdr
1140 * and the contents in buf. Return 0 on success, SFERR_EOF if there were
1141 * no more packets, and SFERR_TRUNC if a partial packet was encountered.
1144 sf_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char *buf, u_int buflen)
1146 struct pcap_sf_patched_pkthdr sf_hdr;
1147 FILE *fp = p->sf.rfile;
1152 * Read the packet header; the structure we use as a buffer
1153 * is the longer structure for files generated by the patched
1154 * libpcap, but if the file has the magic number for an
1155 * unpatched libpcap we only read as many bytes as the regular
1158 amt_read = fread(&sf_hdr, 1, p->sf.hdrsize, fp);
1159 if (amt_read != p->sf.hdrsize) {
1161 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1162 "error reading dump file: %s",
1163 pcap_strerror(errno));
1166 if (amt_read != 0) {
1167 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1168 "truncated dump file; tried to read %d header bytes, only got %lu",
1169 p->sf.hdrsize, (unsigned long)amt_read);
1177 if (p->sf.swapped) {
1178 /* these were written in opposite byte order */
1179 hdr->caplen = SWAPLONG(sf_hdr.caplen);
1180 hdr->len = SWAPLONG(sf_hdr.len);
1181 hdr->ts.tv_sec = SWAPLONG(sf_hdr.ts.tv_sec);
1182 hdr->ts.tv_usec = SWAPLONG(sf_hdr.ts.tv_usec);
1184 hdr->caplen = sf_hdr.caplen;
1185 hdr->len = sf_hdr.len;
1186 hdr->ts.tv_sec = sf_hdr.ts.tv_sec;
1187 hdr->ts.tv_usec = sf_hdr.ts.tv_usec;
1189 /* Swap the caplen and len fields, if necessary. */
1190 switch (p->sf.lengths_swapped) {
1196 if (hdr->caplen <= hdr->len) {
1198 * The captured length is <= the actual length,
1199 * so presumably they weren't swapped.
1207 hdr->caplen = hdr->len;
1212 if (hdr->caplen > buflen) {
1214 * This can happen due to Solaris 2.3 systems tripping
1215 * over the BUFMOD problem and not setting the snapshot
1216 * correctly in the savefile header. If the caplen isn't
1217 * grossly wrong, try to salvage.
1219 static u_char *tp = NULL;
1220 static size_t tsize = 0;
1222 if (hdr->caplen > 65535) {
1223 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1224 "bogus savefile header");
1228 if (tsize < hdr->caplen) {
1229 tsize = ((hdr->caplen + 1023) / 1024) * 1024;
1232 tp = (u_char *)malloc(tsize);
1235 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1236 "BUFMOD hack malloc");
1240 amt_read = fread((char *)tp, 1, hdr->caplen, fp);
1241 if (amt_read != hdr->caplen) {
1243 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1244 "error reading dump file: %s",
1245 pcap_strerror(errno));
1247 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1248 "truncated dump file; tried to read %u captured bytes, only got %lu",
1249 hdr->caplen, (unsigned long)amt_read);
1254 * We can only keep up to buflen bytes. Since caplen > buflen
1255 * is exactly how we got here, we know we can only keep the
1256 * first buflen bytes and must drop the remainder. Adjust
1257 * caplen accordingly, so we don't get confused later as
1258 * to how many bytes we have to play with.
1260 hdr->caplen = buflen;
1261 memcpy((char *)buf, (char *)tp, buflen);
1264 /* read the packet itself */
1265 amt_read = fread((char *)buf, 1, hdr->caplen, fp);
1266 if (amt_read != hdr->caplen) {
1268 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1269 "error reading dump file: %s",
1270 pcap_strerror(errno));
1272 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1273 "truncated dump file; tried to read %u captured bytes, only got %lu",
1274 hdr->caplen, (unsigned long)amt_read);
1283 * Print out packets stored in the file initialized by sf_read_init().
1284 * If cnt > 0, return after 'cnt' packets, otherwise continue until eof.
1287 pcap_offline_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
1289 struct bpf_insn *fcode;
1293 while (status == 0) {
1294 struct pcap_pkthdr h;
1297 * Has "pcap_breakloop()" been called?
1298 * If so, return immediately - if we haven't read any
1299 * packets, clear the flag and return -2 to indicate
1300 * that we were told to break out of the loop, otherwise
1301 * leave the flag set, so that the *next* call will break
1302 * out of the loop without having read any packets, and
1303 * return the number of packets we've processed so far.
1305 if (p->break_loop) {
1313 status = sf_next_packet(p, &h, p->buffer, p->bufsize);
1320 if ((fcode = p->fcode.bf_insns) == NULL ||
1321 bpf_filter(fcode, p->buffer, h.len, h.caplen)) {
1322 (*callback)(user, &h, p->buffer);
1323 if (++n >= cnt && cnt > 0)
1327 /*XXX this breaks semantics tcpslice expects */
1332 * Output a packet to the initialized dump file.
1335 pcap_dump(u_char *user, const struct pcap_pkthdr *h, const u_char *sp)
1338 struct pcap_sf_pkthdr sf_hdr;
1341 sf_hdr.ts.tv_sec = h->ts.tv_sec;
1342 sf_hdr.ts.tv_usec = h->ts.tv_usec;
1343 sf_hdr.caplen = h->caplen;
1344 sf_hdr.len = h->len;
1345 /* XXX we should check the return status */
1346 (void)fwrite(&sf_hdr, sizeof(sf_hdr), 1, f);
1347 (void)fwrite(sp, h->caplen, 1, f);
1350 static pcap_dumper_t *
1351 pcap_setup_dump(pcap_t *p, int linktype, FILE *f, const char *fname)
1354 #if defined(WIN32) || defined(MSDOS)
1356 * If we're writing to the standard output, put it in binary
1357 * mode, as savefiles are binary files.
1359 * Otherwise, we turn off buffering.
1360 * XXX - why? And why not on the standard output?
1367 if (sf_write_header(f, linktype, p->tzoff, p->snapshot) == -1) {
1368 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Can't write to %s: %s",
1369 fname, pcap_strerror(errno));
1374 return ((pcap_dumper_t *)f);
1378 * Initialize so that sf_write() will output to the file named 'fname'.
1381 pcap_dump_open(pcap_t *p, const char *fname)
1386 linktype = dlt_to_linktype(p->linktype);
1387 if (linktype == -1) {
1388 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1389 "%s: link-layer type %d isn't supported in savefiles",
1394 if (fname[0] == '-' && fname[1] == '\0') {
1396 fname = "standard output";
1398 #if !defined(WIN32) && !defined(MSDOS)
1399 f = fopen(fname, "w");
1401 f = fopen(fname, "wb");
1404 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s: %s",
1405 fname, pcap_strerror(errno));
1409 return (pcap_setup_dump(p, linktype, f, fname));
1413 * Initialize so that sf_write() will output to the given stream.
1416 pcap_dump_fopen(pcap_t *p, FILE *f)
1420 linktype = dlt_to_linktype(p->linktype);
1421 if (linktype == -1) {
1422 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1423 "stream: link-layer type %d isn't supported in savefiles",
1428 return (pcap_setup_dump(p, linktype, f, "stream"));
1432 pcap_dump_file(pcap_dumper_t *p)
1438 pcap_dump_ftell(pcap_dumper_t *p)
1440 return (ftell((FILE *)p));
1444 pcap_dump_flush(pcap_dumper_t *p)
1447 if (fflush((FILE *)p) == EOF)
1454 pcap_dump_close(pcap_dumper_t *p)
1458 if (ferror((FILE *)p))
1460 /* XXX should check return from fclose() too */
1462 (void)fclose((FILE *)p);