[PATCH 2/2] Documentation: packfile-uri hash can be longer than 40 hex chars
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STALE1807d
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From: Ivan Frade via GitGitGadget <hidden>
Date: 2021-10-08 16:03:14
Subsystem:
documentation, the rest · Maintainers:
Jonathan Corbet, Linus Torvalds
Revision v1 of 5 in this series.
Revisions (5)
From: Ivan Frade <redacted> Packfile-uri line specifies a hash of 40 hex character, but with SHA256 this hash size is 64. There are already tests using SHA256 (e.g. in ubuntu-latest/linux-clang). Update protocol-v2 documentation to indicate that the hash size depends on the hash algorithm in use. Signed-off-by: Ivan Frade <redacted> --- Documentation/technical/protocol-v2.txt | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/Documentation/technical/protocol-v2.txt b/Documentation/technical/protocol-v2.txt
index 21e8258ccf3..a23f12d6c2b 100644
--- a/Documentation/technical/protocol-v2.txt
+++ b/Documentation/technical/protocol-v2.txt@@ -393,7 +393,7 @@ header. Most sections are sent only when the packfile is sent. wanted-ref = obj-id SP refname packfile-uris = PKT-LINE("packfile-uris" LF) *packfile-uri - packfile-uri = PKT-LINE(40*(HEXDIGIT) SP *%x20-ff LF) + packfile-uri = PKT-LINE((40|64)*(HEXDIGIT) SP *%x20-ff LF) packfile = PKT-LINE("packfile" LF) *PKT-LINE(%x01-03 *%x00-ff)
@@ -476,9 +476,9 @@ header. Most sections are sent only when the packfile is sent. * For each URI the server sends, it sends a hash of the pack's contents (as output by git index-pack) followed by the URI. - * The hashes are 40 hex characters long. When Git upgrades to a new - hash algorithm, this might need to be updated. (It should match - whatever index-pack outputs after "pack\t" or "keep\t". + * The hashes length is defined by the hash algorithm (40 hex + characters in SHA-1, 64 in SHA-256). It should match whatever + index-pack outputs after "pack\t" or "keep\t". packfile section * This section is only included if the client has sent 'want'
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