Mailing List Archive

#1759: VMOD abi check is always lenient
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Reporter: lkarsten | Owner:
Type: defect | Status: new
Priority: normal | Milestone:
Component: varnishd | Version: trunk
Severity: normal | Keywords:
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In 4.0, the VMOD version check is currently always a check against the
VRT_(MAJOR|MINOR)_VERSION fields.

If I write a VMOD that uses internal structures (like
ctx->bo->synth_body), and Martin goes off and add something further up in
to struct busyobj (or struct http_conn, to pick something "completely at
random"), the VMOD compiled for the old version goes sideways when loaded
into the new version.

There is no way for the VMOD writer to signal it, and there is no error
indication for the sysadmin.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1759>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator

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