Vinícius Ferrão 955713c4b2 fix(detect_dhcpd): capture into a private file and stop only its own tcpdump ...

Both copies wrote the capture to /tmp/dhcpdumpfile.log, so a file left by
another user or an earlier root run blocked the probe and two runs
overwrote each other. tcpdump ran behind a shell, so the script killed it
by searching the process table for any tcpdump on the interface, and a
tcpdump that failed to start left an empty file that read as zero DHCP
servers. An interrupt left the capture running.

The capture file is now a private temporary file removed on every exit.
The child execs tcpdump itself, so the script stops and reaps exactly that
pid, and a tcpdump that ended before the window did fails the run. A
failed send and an INT or TERM stop the capture and exit 1 as well.

Signed-off-by: Vinícius Ferrão <2031761+viniciusferrao@users.noreply.github.com>

2026-09-10 03:12:16 -03:00

..

debian

build(xcatprobe): declare listener tool dependency

2026-07-17 14:32:16 -03:00

lib/perl

refactor(utils): centralize executable lookup

2026-09-02 22:57:05 -03:00

scripts

Support xcat-core builds on CentOS8

2022-05-12 14:38:12 -04:00

subcmds

fix(detect_dhcpd): capture into a private file and stop only its own tcpdump

2026-09-10 03:12:16 -03:00

xCAT-probe.spec

build(xcatprobe): declare listener tool dependency

2026-07-17 14:32:16 -03:00

xcatprobe

Better file linking for xCAT-probe

2022-06-10 10:46:17 -04:00