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merge(3p/git): Merge git subtree at v2.29.2

Browse source 
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
This commit is contained in:
Vincent Ambo 2020-11-21 19:20:35 +01:00
parent 082c006c04
commit f4609b896f
1485 changed files with 241535 additions and 109418 deletions
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20
third_party/git/Documentation/technical/hash-function-transition.txt vendored
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@ -531,7 +531,7 @@ Until Git protocol gains SHA-256 support, using SHA-256 based storage
on public-facing Git servers is strongly discouraged. Once Git
protocol gains SHA-256 support, SHA-256 based servers are likely not
to support SHA-1 compatibility, to avoid what may be a very expensive
hash reencode during clone and to encourage peers to modernize.
hash re-encode during clone and to encourage peers to modernize.
The design described here allows fetches by SHA-1 clients of a
personal SHA-256 repository because it's not much more difficult than
@ -602,7 +602,7 @@ git --output-format=sha1 log abac87a^{sha1}..f787cac^{sha256}
Choice of Hash
--------------
In early 2005, around the time that Git was written, Xiaoyun Wang,
In early 2005, around the time that Git was written, Xiaoyun Wang,
Yiqun Lisa Yin, and Hongbo Yu announced an attack finding SHA-1
collisions in 2^69 operations. In August they published details.
Luckily, no practical demonstrations of a collision in full SHA-1 were
@ -650,7 +650,6 @@ Some initial steps can be implemented independently of one another:
The first user-visible change is the introduction of the objectFormat
extension (without compatObjectFormat). This requires:
- implementing the loose-object-idx
- teaching fsck about this mode of operation
- using the hash function API (vtable) when computing object names
- signing objects and verifying signatures
@ -658,6 +657,7 @@ extension (without compatObjectFormat). This requires:
repository
Next comes introduction of compatObjectFormat:
- implementing the loose-object-idx
- translating object names between object formats
- translating object content between object formats
- generating and verifying signatures in the compat format
@ -730,7 +730,7 @@ adoption.
Using hash functions in parallel
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(e.g. https://public-inbox.org/git/22708.8913.864049.452252@chiark.greenend.org.uk/ )
(e.g. https://lore.kernel.org/git/22708.8913.864049.452252@chiark.greenend.org.uk/ )
Objects newly created would be addressed by the new hash, but inside
such an object (e.g. commit) it is still possible to address objects
using the old hash function.
@ -783,7 +783,7 @@ bmwill@google.com, jonathantanmy@google.com, jrnieder@gmail.com,
sbeller@google.com
Initial version sent to
http://public-inbox.org/git/20170304011251.GA26789@aiede.mtv.corp.google.com
http://lore.kernel.org/git/20170304011251.GA26789@aiede.mtv.corp.google.com
2017-03-03 jrnieder@gmail.com
Incorporated suggestions from jonathantanmy and sbeller:
@ -820,8 +820,8 @@ Later history:
edits. This document history is no longer being maintained as it
would now be superfluous to the commit log
[1] http://public-inbox.org/git/CA+55aFzJtejiCjV0e43+9oR3QuJK2PiFiLQemytoLpyJWe6P9w@mail.gmail.com/
[2] http://public-inbox.org/git/CA+55aFz+gkAsDZ24zmePQuEs1XPS9BP_s8O7Q4wQ7LV7X5-oDA@mail.gmail.com/
[3] http://public-inbox.org/git/20170306084353.nrns455dvkdsfgo5@sigill.intra.peff.net/
[4] http://public-inbox.org/git/20170304224936.rqqtkdvfjgyezsht@genre.crustytoothpaste.net
[5] https://public-inbox.org/git/CAJo=hJtoX9=AyLHHpUJS7fueV9ciZ_MNpnEPHUz8Whui6g9F0A@mail.gmail.com/
[1] http://lore.kernel.org/git/CA+55aFzJtejiCjV0e43+9oR3QuJK2PiFiLQemytoLpyJWe6P9w@mail.gmail.com/
[2] http://lore.kernel.org/git/CA+55aFz+gkAsDZ24zmePQuEs1XPS9BP_s8O7Q4wQ7LV7X5-oDA@mail.gmail.com/
[3] http://lore.kernel.org/git/20170306084353.nrns455dvkdsfgo5@sigill.intra.peff.net/
[4] http://lore.kernel.org/git/20170304224936.rqqtkdvfjgyezsht@genre.crustytoothpaste.net
[5] https://lore.kernel.org/git/CAJo=hJtoX9=AyLHHpUJS7fueV9ciZ_MNpnEPHUz8Whui6g9F0A@mail.gmail.com/