From d08c13b947335cc48ecc1a8453d97b7147c2d6d6 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 10 Dec 2014 22:28:27 +0100 Subject: fsck: complain about NTFS ".git" aliases in trees Now that the index can block pathnames that can be mistaken to mean ".git" on NTFS and FAT32, it would be helpful for fsck to notice such problematic paths. This lets servers which use receive.fsckObjects block them before the damage spreads. Note that the fsck check is always on, even for systems without core.protectNTFS set. This is technically more restrictive than we need to be, as a set of users on ext4 could happily use these odd filenames without caring about NTFS. However, on balance, it's helpful for all servers to block these (because the paths can be used for mischief, and servers which bother to fsck would want to stop the spread whether they are on NTFS themselves or not), and hardly anybody will be affected (because the blocked names are variants of .git or git~1, meaning mischief is almost certainly what the tree author had in mind). Ideally these would be controlled by a separate "fsck.protectNTFS" flag. However, it would be much nicer to be able to enable/disable _any_ fsck flag individually, and any scheme we choose should match such a system. Given the likelihood of anybody using such a path in practice, it is not unreasonable to wait until such a system materializes. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- fsck.c | 3 ++- t/t1450-fsck.sh | 9 +++++++-- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/fsck.c b/fsck.c index b49113bf0e..0b76de6f68 100644 --- a/fsck.c +++ b/fsck.c @@ -176,7 +176,8 @@ static int fsck_tree(struct tree *item, int strict, fsck_error error_func) has_dot = 1; if (!strcmp(name, "..")) has_dotdot = 1; - if (!strcasecmp(name, ".git") || is_hfs_dotgit(name)) + if (!strcasecmp(name, ".git") || is_hfs_dotgit(name) || + is_ntfs_dotgit(name)) has_dotgit = 1; has_zero_pad |= *(char *)desc.buffer == '0'; update_tree_entry(&desc); diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh index 8158b98e6f..6edd99a81e 100755 --- a/t/t1450-fsck.sh +++ b/t/t1450-fsck.sh @@ -251,10 +251,10 @@ while read name path pretty; do tree=$(git rev-parse HEAD^{tree}) && value=$(eval "echo \$$type") && printf "$mode $type %s\t%s" "$value" "$path" >bad && - git mktree out && cat out && - grep "warning.*\\." out + grep "warning.*tree $bad_tree" out )' done <<-\EOF 100644 blob @@ -266,6 +266,11 @@ dotdot .. dotgit .git dotgit-case .GIT dotgit-unicode .gI${u200c}T .gI{u200c}T +dotgit-case2 .Git +git-tilde1 git~1 +dotgitdot .git. +dot-backslash-case .\\\\.GIT\\\\foobar +dotgit-case-backslash .git\\\\foobar EOF test_done -- cgit v1.2.3