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conf: Make the argument to --pcap option mandatory

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The --pcap or -p option can be used with or without an argument.  If given,
the argument gives the name of the file to save a packet trace to.  If
omitted, we generate a default name in /tmp.

Generating the default name isn't particularly useful though, since making
a suitable name can easily be done by the caller.  Remove this feature.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson
2022-08-26 14:58:32 +10:00
committed by Stefano Brivio
parent 63d1390229
commit bf95322fc1
3 changed files with 3 additions and 53 deletions
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passt.1
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@@ -111,16 +111,6 @@ Display a help message and exit.
Capture tap-facing (that is, guest-side or namespace-side) network packets to
\fIfile\fR in \fBpcap\fR format.
If \fIfile\fR is not given, capture packets to
\fB/tmp/passt_\fIISO8601-timestamp\fR_\fIPID\fB.pcap\fR
in \fBpasst\fR mode and to
\fB/tmp/pasta_\fIISO8601-timestamp\fR_\fIPID\fB.pcap\fR
in \fBpasta\fR mode, where \fIPID\fR is the ID of the running process.
.TP
.BR \-P ", " \-\-pid " " \fIfile
Write own PID to \fIfile\fR once initialisation is done, before forking to