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pcap_dump(3pcap) [plan9 man page]

PCAP_DUMP(3PCAP)														  PCAP_DUMP(3PCAP)

pcap_dump - write a packet to a capture file SYNOPSIS
#include <pcap/pcap.h> void pcap_dump(u_char *user, struct pcap_pkthdr *h, u_char *sp); DESCRIPTION
pcap_dump() outputs a packet to the ``savefile'' opened with pcap_dump_open(). Note that its calling arguments are suitable for use with pcap_dispatch() or pcap_loop(). If called directly, the user parameter is of type pcap_dumper_t as returned by pcap_dump_open(). SEE ALSO
pcap(3PCAP), pcap_dump_open(3PCAP), pcap_dispatch(3PCAP), pcap_loop(3PCAP) 5 April 2008 PCAP_DUMP(3PCAP)

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pcap_dump_open, pcap_dump_fopen - open a file to which to write packets SYNOPSIS
#include <pcap/pcap.h> pcap_dumper_t *pcap_dump_open(pcap_t *p, const char *fname); pcap_dumper_t *pcap_dump_fopen(pcap_t *p, FILE *fp); DESCRIPTION
pcap_dump_open() is called to open a ``savefile'' for writing. fname specifies the name of the file to open. The file will have the same format as those used by tcpdump(1) and tcpslice(1). The name "-" in a synonym for stdout. pcap_dump_fopen() is called to write data to an existing open stream fp. Note that on Windows, that stream should be opened in binary mode. p is a capture or ``savefile'' handle returned by an earlier call to pcap_create() and activated by an earlier call to pcap_activate(), or returned by an earlier call to pcap_open_offline(), pcap_open_live(), or pcap_open_dead(). The link-layer type and snapshot length from p are used as the link-layer type and snapshot length of the output file. RETURN VALUES
A pointer to a pcap_dumper_t structure to use in subsequent pcap_dump() and pcap_dump_close() calls is returned on success. NULL is returned on failure. If NULL is returned, pcap_geterr(p) can be used to get the error text. 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-savefile(5) 5 April 2008 PCAP_DUMP_OPEN(3PCAP)
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