The 06cbe8550324e0fd2290839bf3b9a92aa53b70ab core.sharedRepository
handling extension broke backwards compatibility; before, shared=1 meant
that Git merely ensured the repository is group-writable, not that it's
_only_ group-writable, which is the current behaviour. Thus, with umask 002,
Git creates repository with /rw.rw.--./, this patch fixes it back to
/rw.rw.r-./.
Maybe it makes sense to provide the current semantics in some way too,
but that cannot be done at the expense of ditching backwards
compatibility; this bug has just wasted me two hours and broke
repo.or.cz pushing for several hours.
Cc: Heikki Orsila <heikki.orsila@xxxxxx>
Signed-off-by: Petr Baudis <pasky@xxxxxxxxxxxx>
---
The patch description is clarified and a test is added to t1301.
path.c | 2 +-
t/t1301-shared-repo.sh | 19 +++++++++++++++++++
2 files changed, 20 insertions(+), 1 deletions(-)
diff --git a/path.c b/path.c
index 5983255..75c5915 100644
--- a/path.c
+++ b/path.c
@@ -269,7 +269,7 @@ int adjust_shared_perm(const char *path)
mode = st.st_mode;
if (shared_repository) {
- int tweak = shared_repository;
+ int tweak = (mode & 0777) | shared_repository;
if (!(mode & S_IWUSR))
tweak &= ~0222;
mode = (mode & ~0777) | tweak;
diff --git a/t/t1301-shared-repo.sh b/t/t1301-shared-repo.sh
index 6c78c8b..d26191b 100755
--- a/t/t1301-shared-repo.sh
+++ b/t/t1301-shared-repo.sh
@@ -17,6 +17,25 @@ test_expect_success 'shared = 0400 (faulty permission u-w)' '
test $ret != "0"
'
+test_expect_success 'shared=1 does not override sane umask' '
+ mkdir sub &&
+ cd sub &&
+ umask 002 &&
+ git init --shared=1 &&
+ test 1 = $(git config core.sharedrepository) &&
+ actual="$(ls -l .git/HEAD)" &&
+ rm -rf sub &&
+ case "$actual" in
+ -rw-rw-r--*)
+ : happy
+ ;;
+ *)
+ echo Oops, .git/HEAD is not 0664 but $actual
+ false
+ ;;
+ esac
+'
+
test_expect_success 'shared=all' '
mkdir sub &&
cd sub &&
--
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