[PATCH 0/4] upload-pack: custom allowed object filters

Hi,

Here are some patches that I sent a while ago [1] as an RFC, but are now ready for an actual review. Not much has changed from the original patches, but a few things have. Namely:

  - the 'uploadpack.filter.tree.maxDepth' configuration is new,

  - they are rebased forward on top of Christian's various upload-pack
    clean-ups, so they should apply cleanly to 'master' (in fact, they
    were rebased to the tip of master, not just Christian's various
    series), and

  - the patches have been substantially cleaned up and now have
    Signed-off-by trailer

As a reminder, these are the patches that we have been using at GitHub to allow only certain kinds of object filters when serving partial clones. If it is of interest, our configuration looks something like the following:

  [uploadpack]
  	allowAnySHA1InWant = true
  	allowFilter = true
  [uploadpack "filter"]
  	allow = false
  [uploadpack "filter.blob:limit"]
  	allow = true
  [uploadpack "filter.blob:none"]
  	allow = true
  [uploadpack "filter.tree"]
  	allow = true
  	maxDepth = 0

Thanks in advance for your review (and thanks also to Peff, Christian, Eric, and Junio for their help and discussion already).

[1]: https://lore.kernel.org/git/cover.1584477196.git.me@ttaylorr.com/

Thanks, Taylor

Taylor Blau (4):
  list_objects_filter_options: introduce 'list_object_filter_config_name'
  upload-pack.c: allow banning certain object filter(s)
  upload-pack.c: pass 'struct list_objects_filter_options *'
  upload-pack.c: introduce 'uploadpack.filter.tree.maxDepth'

 Documentation/config/uploadpack.txt |  22 ++++++
 list-objects-filter-options.c       |  23 ++++++
 list-objects-filter-options.h       |   6 ++
 t/t5616-partial-clone.sh            |  34 +++++++++
 upload-pack.c                       | 104 ++++++++++++++++++++++++++++
 5 files changed, 189 insertions(+)

-- 2.27.0.225.g9fa765a71d