init: use pledge(2) after suricata initialization. #3742
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pledge(2) can be used on OpenBSD to restrict suricata possible operation on the system once initialization is completed. The process promises to only make use of: - "stdio" to allow read(2) on IPS rules and write(2) on log file - "rpath wpath cpath" to allow log rotation - "unix" to operate the control unix socket and log unix sockets - "dns" to retrieve DNS from recvfrom(2)/sento(2) in IPFW mode - "bpf" as suricata uses libpcap, which uses the BIOCGSTATS operation Signed-off-by: Emmanuel Roullit <emmanuel.roullit@cognitix.de>
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Merged through #3783, thanks Emmanuel! |
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Link to redmine ticket:
https://redmine.openinfosecfoundation.org/issues/2895
Describe changes:
pledge(2)can be used on OpenBSD to restrict suricata possibleoperation on the system once initialization is completed.
The process promises to only make use of:
stdioto allowread(2)on IPS rules andwrite(2)on log filerpath wpath cpathto allow log rotation and rule reloadunixto operate the control unix socket and log unix socketsdnsto retrieve DNS from recvfrom(2)/sento(2) in IPFW modebpfas suricata uses libpcap, which uses theBIOCGSTATSoperationPRScript output (if applicable): N/A