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We have to set the filter on every new file.

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Even if we haven't recompiled the filter, because the new file has the
same DLT as the old file, we still need to apply it to the new file.
This commit is contained in:
Guy Harris 2016-03-20 15:59:27 -07:00
parent 321383790f
commit c66320c670
1 changed files with 12 additions and 7 deletions
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19
tcpdump.c
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@ -1840,19 +1840,24 @@ main(int argc, char **argv)
* We're printing the decoded packets;
* switch to the new DLT.
*
* To do that, we need to recompile
* the filter, change the printer,
* and change the DLT name.
* To do that, we need to change
* the printer, change the DLT name,
* and recompile the filter with
* the new DLT.
*/
dlt = new_dlt;
if (pcap_compile(pd, &fcode, cmdbuf, Oflag, netmask) < 0)
error("%s", pcap_geterr(pd));
if (pcap_setfilter(pd, &fcode) < 0)
error("%s", pcap_geterr(pd));
ndo->ndo_if_printer = get_if_printer(ndo, dlt);
dlt_name = pcap_datalink_val_to_name(dlt);
if (pcap_compile(pd, &fcode, cmdbuf, Oflag, netmask) < 0)
error("%s", pcap_geterr(pd));
}
/*
* Set the filter on the new file.
*/
if (pcap_setfilter(pd, &fcode) < 0)
error("%s", pcap_geterr(pd));
/*
* Report the new file.
*/