[Bug 226893] freebsd-update supporting explicit patch-level for fetch+upgrade

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226893

--- Comment #1 from Derek <482254ac at razorfever.net> ---
It was expressed that "it would be nice if" we could list the available patch
levels, for example, and by extension if we can specify that patch level by
number, instead of existing tag hash.

1. Without updates to the freebsd-update server portion, the only way that I
can see this being feasible is to download all the available tags for a
release, and then pull down their manifests and see if there's a file that can
be downloaded (e.g. whatever freebsd-version is sourcing), and parsed.  I feel
like this is needlessly onerous.

2. A different method, would be in addition to latest.ssl, we also support
all.ssl, which is the concatenation of all of the latest.ssl released for a
particular release/architecture.  This will require changes to the
freebsd-update server portion, and will need support added retroactively for
previous supported releases.  It would be trivial to modify to the
freebsd-update client to support this file instead (or in addition to).

3. A third, most hacky, option is just to specify the tag hash on the command
line, and put the onus on the user to research the tag they wish to install.

There's likely other approaches, but I'm partial to #2.

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