From: Jonathon Mah <me@xxxxxxxxxxxxxxx>
The string in 'base' contains a path suffix to a specific object;
when its value is used, the suffix must either be filled (as in
stat_sha1_file, open_sha1_file, check_and_freshen_nonlocal) or
cleared (as in prepare_packed_git) to avoid junk at the end.
660c889e (sha1_file: add for_each iterators for loose and packed
objects, 2014-10-15) introduced loose_from_alt_odb(), but this did
neither and treated 'base' as a complete path to the "base" object
directory, instead of a pointer to the "base" of the full path
string.
The trailing path after 'base' is still initialized to NUL, hiding
the bug in some common cases. Additionally the descendent
for_each_file_in_obj_subdir() function swallows ENOENT, so an error
only shows if the alternate's path was last filled with a valid
object (where statting /path/to/existing/00/0bjectfile/00 fails).
Signed-off-by: Jonathon Mah <me@xxxxxxxxxxxxxxx>
Helped-by: Kyle J. McKay <mackyle@xxxxxxxxx>
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
I think the S-O-B should still stand, as the code is now a mix of our
work, and the tests are still Jonathon's. But let me know if you do not
want your name attached to this. ;)
I am also happy to build it as a patch on top of the original if that is
simpler.
sha1_file.c | 13 ++++++++++---
t/t5304-prune.sh | 8 ++++++++
2 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/sha1_file.c b/sha1_file.c
index 725de7f..a41cc4f 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -3406,9 +3406,16 @@ static int loose_from_alt_odb(struct alternate_object_database *alt,
void *vdata)
{
struct loose_alt_odb_data *data = vdata;
- return for_each_loose_file_in_objdir(alt->base,
- data->cb, NULL, NULL,
- data->data);
+ struct strbuf buf = STRBUF_INIT;
+ int r;
+
+ /* copy base not including trailing '/' */
+ strbuf_add(&buf, alt->base, alt->name - alt->base - 1);
+ r = for_each_loose_file_in_objdir_buf(&buf,
+ data->cb, NULL, NULL,
+ data->data);
+ strbuf_release(&buf);
+ return r;
}
int for_each_loose_object(each_loose_object_fn cb, void *data)
diff --git a/t/t5304-prune.sh b/t/t5304-prune.sh
index e32e46d..0794d33 100755
--- a/t/t5304-prune.sh
+++ b/t/t5304-prune.sh
@@ -253,4 +253,12 @@ test_expect_success 'prune .git/shallow' '
test_path_is_missing .git/shallow
'
+test_expect_success 'prune: handle alternate object database' '
+ test_create_repo A &&
+ git -C A commit --allow-empty -m "initial commit" &&
+ git clone --shared A B &&
+ git -C B commit --allow-empty -m "next commit" &&
+ git -C B prune
+'
+
test_done
--
2.3.0.rc1.287.g761fd19
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