refs: break out ref conflict checks
authorDavid Turner <dturner@twopensource.com>
Tue, 10 Nov 2015 11:42:40 +0000 (12:42 +0100)
committerJeff King <peff@peff.net>
Fri, 20 Nov 2015 09:52:01 +0000 (04:52 -0500)
commit0845122c39c415fa50904ee94c6b60e4e722466b
tree7fcb6eb01d6f13d272f346079a1e57eb8cbe32f8
parent5f3c3a4e6f11dedad93d9f5bb2caa85c684db54a
refs: break out ref conflict checks

Create new function find_descendant_ref, to hold one of the ref
conflict checks used in verify_refname_available. Multiple backends
will need this function, so move it to the common code.

Also move rename_ref_available to the common code, because alternate
backends might need it and it has no files-backend-specific code.

Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
refs.c
refs/files-backend.c
refs/refs-internal.h