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Add a man page describing the pcap file format. 

Refer to it from the pcap_open_offline() and pcap_dump_open() man pages
(so they are now generated).

Update .cvsignore.
This commit is contained in:
guy 2008-10-23 05:56:59 +00:00
parent fd0e3d055e
commit 763adefead
7 changed files with 161 additions and 18 deletions
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2
.cvsignore
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@ -9,7 +9,9 @@ config.h
pcap-config
pcap-filter.manmisc
pcap-linktype.manmisc
pcap-savefile.manfile
pcap.3pcap
pcap_compile.3pcap
pcap_datalink.3pcap
pcap_list_datalinks.3pcap
pcap_open_dead.3pcap

26
Makefile.in
View File

@ -17,7 +17,7 @@
# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
# @(#) $Header: /tcpdump/master/libpcap/Makefile.in,v 1.133 2008-10-22 18:02:36 guy Exp $ (LBL)
# @(#) $Header: /tcpdump/master/libpcap/Makefile.in,v 1.134 2008-10-23 05:56:59 guy Exp $ (LBL)
#
# Various configurable paths (remember to edit Makefile.in, not Makefile)
@ -130,8 +130,10 @@ MAN3PCAP_EXPAND = \
pcap.3pcap.in \
pcap_compile.3pcap.in \
pcap_datalink.3pcap.in \
pcap_dump_open.3pcap.in \
pcap_list_datalinks.3pcap.in \
pcap_open_dead.3pcap.in
pcap_open_dead.3pcap.in \
pcap_open_offline.3pcap.in
MAN3PCAP_NOEXPAND = \
pcap_activate.3pcap \
@ -146,7 +148,6 @@ MAN3PCAP_NOEXPAND = \
pcap_dump_file.3pcap \
pcap_dump_flush.3pcap \
pcap_dump_ftell.3pcap \
pcap_dump_open.3pcap \
pcap_file.3pcap \
pcap_fileno.3pcap \
pcap_findalldevs.3pcap \
@ -165,7 +166,6 @@ MAN3PCAP_NOEXPAND = \
pcap_next_ex.3pcap \
pcap_offline_filter.3pcap \
pcap_open_live.3pcap \
pcap_open_offline.3pcap \
pcap_set_buffer_size.3pcap \
pcap_set_datalink.3pcap \
pcap_set_promisc.3pcap \
@ -182,7 +182,11 @@ MAN3PCAP_NOEXPAND = \
MAN3PCAP = $(MAN3PCAP_NOEXPAND) $(MAN3PCAP_EXPAND:.in=)
MANMISC = pcap-filter.manmisc.in \
MANFILE = \
pcap-savefile.manfile.in
MANMISC = \
pcap-filter.manmisc.in \
pcap-linktype.manmisc.in
EXTRA_DIST = \
@ -422,6 +426,8 @@ install: libpcap.a pcap-config
(mkdir -p $(DESTDIR)$(mandir)/man1; chmod 755 $(DESTDIR)$(mandir)/man1)
[ -d $(DESTDIR)$(mandir)/man3 ] || \
(mkdir -p $(DESTDIR)$(mandir)/man3; chmod 755 $(DESTDIR)$(mandir)/man3)
[ -d $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@ ] || \
(mkdir -p $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@; chmod 755 $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@)
[ -d $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@ ] || \
(mkdir -p $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@; chmod 755 $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@)
$(INSTALL_DATA) $(srcdir)/pcap/pcap.h \
@ -464,6 +470,9 @@ install: libpcap.a pcap-config
$(DESTDIR)$(mandir)/man3/pcap_fopen_offline.3pcap
ln $(DESTDIR)$(mandir)/man3/pcap_setnonblock.3pcap \
$(DESTDIR)$(mandir)/man3/pcap_getnonblock.3pcap
for i in $(MANFILE); do \
$(INSTALL_DATA) $(srcdir)/`echo $$i | sed 's/.manfile.in/.manfile/'` \
$(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@/`echo $$i | sed 's/.manfile.in/.@MAN_FILE_FORMATS@/'`; done
for i in $(MANMISC); do \
$(INSTALL_DATA) $(srcdir)/`echo $$i | sed 's/.manmisc.in/.manmisc/'` \
$(DESTDIR)$(mandir)/man@MAN_MISC_INFO@/`echo $$i | sed 's/.manmisc.in/.@MAN_MISC_INFO@/'`; done
@ -499,6 +508,8 @@ uninstall:
rm -f $(DESTDIR)$(mandir)/man3/pcap_next.3pcap
rm -f $(DESTDIR)$(mandir)/man3/pcap_fopen_offline.3pcap
rm -f $(DESTDIR)$(mandir)/man3/pcap_getnonblock.3pcap
for i in $(MANFILE); do \
rm -f $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@/`echo $$i | sed 's/.manfile.in/.@MAN_FILE_FORMATS@/'`; done
for i in $(MANMISC); do \
rm -f $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@/`echo $$i | sed 's/.manmisc.in/.@MAN_MISC_INFO@/'`; done
@ -509,7 +520,7 @@ distclean: clean
rm -f Makefile config.cache config.log config.status \
config.h gnuc.h os-proto.h bpf_filter.c pcap-config \
stamp-h stamp-h.in
rm -f $(MAN3PCAP_EXPAND:.in=) $(MANMISC:.in=)
rm -f $(MAN3PCAP_EXPAND:.in=) $(MANFILE:.in=) $(MANMISC:.in=)
rm -rf autom4te.cache
tags: $(TAGFILES)
@ -523,7 +534,8 @@ releasetar:
@cwd=`pwd` ; dir=`basename $$cwd` ; name=$(PROG)-`cat VERSION` ; \
mkdir $$name; \
tar cf - $(CSRC) $(HDR) $(MAN1) $(MAN3PCAP_EXPAND) \
$(MAN3PCAP_NOEXPAND) $(MANMISC) $(EXTRA_DIST) | (cd $$name; tar xf -); \
$(MAN3PCAP_NOEXPAND) $(MANFILE) $(MANMISC) $(EXTRA_DIST) | \
(cd $$name; tar xf -); \
tar -c -z -f $$name.tar.gz $$name; \
rm -rf $$name

7
configure vendored
View File

@ -1,5 +1,5 @@
#! /bin/sh
# From configure.in Revision: 1.158 .
# From configure.in Revision: 1.159 .
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.61.
#
@ -9449,7 +9449,7 @@ test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
ac_config_headers="$ac_config_headers config.h"
ac_config_files="$ac_config_files Makefile pcap-filter.manmisc pcap-linktype.manmisc pcap.3pcap pcap_compile.3pcap pcap_datalink.3pcap pcap_list_datalinks.3pcap pcap_open_dead.3pcap"
ac_config_files="$ac_config_files Makefile pcap-filter.manmisc pcap-linktype.manmisc pcap-savefile.manfile pcap.3pcap pcap_compile.3pcap pcap_datalink.3pcap pcap_dump_open.3pcap pcap_list_datalinks.3pcap pcap_open_dead.3pcap pcap_open_offline.3pcap"
cat >confcache <<\_ACEOF
# This file is a shell script that caches the results of configure
@ -10008,11 +10008,14 @@ do
"Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
"pcap-filter.manmisc") CONFIG_FILES="$CONFIG_FILES pcap-filter.manmisc" ;;
"pcap-linktype.manmisc") CONFIG_FILES="$CONFIG_FILES pcap-linktype.manmisc" ;;
"pcap-savefile.manfile") CONFIG_FILES="$CONFIG_FILES pcap-savefile.manfile" ;;
"pcap.3pcap") CONFIG_FILES="$CONFIG_FILES pcap.3pcap" ;;
"pcap_compile.3pcap") CONFIG_FILES="$CONFIG_FILES pcap_compile.3pcap" ;;
"pcap_datalink.3pcap") CONFIG_FILES="$CONFIG_FILES pcap_datalink.3pcap" ;;
"pcap_dump_open.3pcap") CONFIG_FILES="$CONFIG_FILES pcap_dump_open.3pcap" ;;
"pcap_list_datalinks.3pcap") CONFIG_FILES="$CONFIG_FILES pcap_list_datalinks.3pcap" ;;
"pcap_open_dead.3pcap") CONFIG_FILES="$CONFIG_FILES pcap_open_dead.3pcap" ;;
"pcap_open_offline.3pcap") CONFIG_FILES="$CONFIG_FILES pcap_open_offline.3pcap" ;;
*) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
echo "$as_me: error: invalid argument: $ac_config_target" >&2;}

12
configure.in
View File

@ -1,4 +1,4 @@
dnl @(#) $Header: /tcpdump/master/libpcap/configure.in,v 1.158 2008-10-21 07:33:01 guy Exp $ (LBL)
dnl @(#) $Header: /tcpdump/master/libpcap/configure.in,v 1.159 2008-10-23 05:56:59 guy Exp $ (LBL)
dnl
dnl Copyright (c) 1994, 1995, 1996, 1997
dnl The Regents of the University of California. All rights reserved.
@ -6,7 +6,7 @@ dnl
dnl Process this file with autoconf to produce a configure script.
dnl
AC_REVISION($Revision: 1.158 $)
AC_REVISION($Revision: 1.159 $)
AC_PREREQ(2.50)
AC_INIT(pcap.c)
@ -1050,9 +1050,11 @@ AC_PROG_INSTALL
AC_CONFIG_HEADER(config.h)
AC_OUTPUT(Makefile pcap-filter.manmisc pcap-linktype.manmisc pcap.3pcap
pcap_compile.3pcap pcap_datalink.3pcap pcap_list_datalinks.3pcap
pcap_open_dead.3pcap)
AC_OUTPUT(Makefile pcap-filter.manmisc pcap-linktype.manmisc
pcap-savefile.manfile pcap.3pcap pcap_compile.3pcap
pcap_datalink.3pcap pcap_dump_open.3pcap
pcap_list_datalinks.3pcap pcap_open_dead.3pcap
pcap_open_offline.3pcap)
if test -f .devel ; then
make depend

123
pcap-savefile.manfile.in Normal file
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@ -0,0 +1,123 @@
'\" t
.\" @(#) $Header: /tcpdump/master/libpcap/pcap-savefile.manfile.in,v 1.1 2008-10-23 05:56:59 guy Exp $
.\"
.\" Copyright (c) 1994, 1996, 1997
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that: (1) source code distributions
.\" retain the above copyright notice and this paragraph in its entirety, (2)
.\" distributions including binary code include the above copyright notice and
.\" this paragraph in its entirety in the documentation or other materials
.\" provided with the distribution, and (3) all advertising materials mentioning
.\" features or use of this software display the following acknowledgement:
.\" ``This product includes software developed by the University of California,
.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
.\" the University nor the names of its contributors may be used to endorse
.\" or promote products derived from this software without specific prior
.\" written permission.
.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
.\"
.TH PCAP-SAVEFILE @MAN_FILE_FORMATS@ "21 October 2008"
.SH NAME
pcap-savefile \- libpcap savefile format
.SH DESCRIPTION
NOTE: applications and libraries should, if possible, use libpcap to
read savefiles, rather than having their own code to read savefiles.
If, in the future, a new file format is supported by libpcap,
applications and libraries using libpcap to read savefiles will be able
to read the new format of savefiles, but applications and libraries
using their own code to read savefiles will have to be changed to
support the new file format.
.PP
``Savefiles'' read and written by libpcap and applications using libpcap
start with a per-file header. The format of the per-file header is:
.RS
.TS
box;
c s
c | c
c s.
Magic number
_
Major version Minor version
_
Time zone offset
_
Time stamp accuracy
_
Snapshot length
_
Link-layer header type
.TE
.RE
.PP
All fields in the per-file header are in the byte order of the host
writing the file. The first field in the per-file header is a 4-byte
magic number, with the value 0xa1b2c3d4. The magic number, when read by
a host with the same byte order as the host that wrote the file, will
have the value 0xa1b2c3d4, and, when read by a host with the opposite
byte order as the host that wrote the file, will have the value
0xd4c3b2a1. That allows software reading the file to determine whether
the byte order of the host that wrote the file is the same as the byte
order of the host on which the file is being read, and thus whether the
values in the per-file and per-packet headers need to be byte-swapped.
.PP
Following this are:
.IP
A 2-byte file format major version number; the current version number is
2.
.IP
A 2-byte file format minor version number; the current version number is
4.
.IP
A 4-byte time zone offset; this is always 0.
.IP
A 4-byte number giving the accuracy of time stamps in the file; this is
always 0.
.IP
A 4-byte number giving the "snapshot length" of the capture; packets
longer than the snapshot length are truncated to the snapshot length, so
that, if the snapshot length is
.IR N ,
only the first
.I N
bytes of a packet longer than
.I N
bytes will be saved in the capture.
.IP
a 4-byte number giving the link-layer header type for packets in the
capture.
.PP
Following the per-file header are zero or more packets; each packet
begins with a per-packet header, which is immediately followed by the
raw packet data. The format of the per-packet header is:
.RS
.TS
box;
c.
Time stamp, seconds value
_
Time stamp, microseconds value
_
Length of captured packet data
_
Un-truncated length of the packet data
.TE
.RE
.PP
All fields in the per-packet header are in the byte order of the host
writing the file. The per-packet header begins with a time stamp giving
the approximate time the packet was captured; the time stamp consists of
a 4-byte value, giving the time in seconds since January 1, 1970,
00:00:00 UTC, followed by a 4-byte value, giving the time in
microseconds since that second. Following that are a 4-byte value
giving the number of bytes of captured data that follow the per-packet
header and a 4-byte value giving the number of bytes that would have
been present had the packet not been truncated by the snapshot length.
The two lengths will be equal if the number of bytes of packet data are
less than or equal to the snapshot length.
.SH SEE ALSO
pcap(3PCAP)

5
pcap_dump_open.3pcap → pcap_dump_open.3pcap.in
View File

@ -1,4 +1,4 @@
.\" @(#) $Header: /tcpdump/master/libpcap/Attic/pcap_dump_open.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $
.\" @(#) $Header: /tcpdump/master/libpcap/pcap_dump_open.3pcap.in,v 1.1 2008-10-23 05:56:59 guy Exp $
.\"
.\" Copyright (c) 1994, 1996, 1997
.\" The Regents of the University of California. All rights reserved.
@ -83,4 +83,5 @@ can be used to get the error text.
.SH SEE ALSO
pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP),
pcap_open_offline(3PCAP), pcap_open_live(3PCAP), pcap_open_dead(3PCAP),
pcap_dump(3PCAP), pcap_dump_close(3PCAP), pcap_geterr(3PCAP)
pcap_dump(3PCAP), pcap_dump_close(3PCAP), pcap_geterr(3PCAP),
pcap-savefile(@MAN_FILE_FORMATS@)

4
pcap_open_offline.3pcap → pcap_open_offline.3pcap.in
View File

@ -1,4 +1,4 @@
.\" @(#) $Header: /tcpdump/master/libpcap/Attic/pcap_open_offline.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $
.\" @(#) $Header: /tcpdump/master/libpcap/pcap_open_offline.3pcap.in,v 1.1 2008-10-23 05:56:59 guy Exp $
.\"
.\" Copyright (c) 1994, 1996, 1997
.\" The Regents of the University of California. All rights reserved.
@ -75,4 +75,4 @@ is assumed to be able to hold at least
.B PCAP_ERRBUF_SIZE
chars.
.SH SEE ALSO
pcap(3PCAP)
pcap(3PCAP), pcap-savefile(@MAN_FILE_FORMATS@)