From 5c17f51270e1b384e03fb9c16b5a0040b115ae8c Mon Sep 17 00:00:00 2001 From: Jeff King Date: Wed, 28 Nov 2012 16:35:29 -0500 Subject: [PATCH] fsck: warn about ".git" in trees Having a ".git" entry inside a tree can cause confusing results on checkout. At the top-level, you could not checkout such a tree, as it would complain about overwriting the real ".git" directory. In a subdirectory, you might check it out, but performing operations in the subdirectory would confusingly consider the in-tree ".git" directory as the repository. The regular git tools already make it hard to accidentally add such an entry to a tree, and do not allow such entries to enter the index at all. Teaching fsck about it provides an additional safety check, and let's us avoid propagating any such bogosity when transfer.fsckObjects is on. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- fsck.c | 5 +++++ t/t1450-fsck.sh | 15 +++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/fsck.c b/fsck.c index 31c9a51395..99c0497674 100644 --- a/fsck.c +++ b/fsck.c @@ -144,6 +144,7 @@ static int fsck_tree(struct tree *item, int strict, fsck_error error_func) int has_empty_name = 0; int has_dot = 0; int has_dotdot = 0; + int has_dotgit = 0; int has_zero_pad = 0; int has_bad_modes = 0; int has_dup_entries = 0; @@ -174,6 +175,8 @@ static int fsck_tree(struct tree *item, int strict, fsck_error error_func) has_dot = 1; if (!strcmp(name, "..")) has_dotdot = 1; + if (!strcmp(name, ".git")) + has_dotgit = 1; has_zero_pad |= *(char *)desc.buffer == '0'; update_tree_entry(&desc); @@ -227,6 +230,8 @@ static int fsck_tree(struct tree *item, int strict, fsck_error error_func) retval += error_func(&item->object, FSCK_WARN, "contains '.'"); if (has_dotdot) retval += error_func(&item->object, FSCK_WARN, "contains '..'"); + if (has_dotgit) + retval += error_func(&item->object, FSCK_WARN, "contains '.git'"); if (has_zero_pad) retval += error_func(&item->object, FSCK_WARN, "contains zero-padded file modes"); if (has_bad_modes) diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh index 0b5c30b4d9..d730734fde 100755 --- a/t/t1450-fsck.sh +++ b/t/t1450-fsck.sh @@ -253,4 +253,19 @@ test_expect_success 'fsck notices "." and ".." in trees' ' ) ' +test_expect_success 'fsck notices ".git" in trees' ' + ( + git init dotgit && + cd dotgit && + blob=$(echo foo | git hash-object -w --stdin) && + tab=$(printf "\\t") && + git mktree <<-EOF && + 100644 blob $blob$tab.git + EOF + git fsck 2>out && + cat out && + grep "warning.*\\.git" out + ) +' + test_done -- 2.11.4.GIT