diff options
author | Glen Choo <chooglen@google.com> | 2023-04-11 01:18:50 +0300 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2023-04-11 18:46:09 +0300 |
commit | 4e33535ea98ac16d2163e8e9fcbba5e015881e65 (patch) | |
tree | 73ea3c27e42422c1ee5282951e7f78689395aa09 /builtin/clone.c | |
parent | f285f68a132109c234d93490671c00218066ace9 (diff) |
clone: error specifically with --local and symlinked objects
6f054f9fb3 (builtin/clone.c: disallow --local clones with
symlinks, 2022-07-28) gives a good error message when "git clone
--local" fails when the repo to clone has symlinks in
"$GIT_DIR/objects". In bffc762f87 (dir-iterator: prevent top-level
symlinks without FOLLOW_SYMLINKS, 2023-01-24), we later extended this
restriction to the case where "$GIT_DIR/objects" is itself a symlink,
but we didn't update the error message then - bffc762f87's tests show
that we print a generic "failed to start iterator over" message.
This is exacerbated by the fact that Documentation/git-clone.txt
mentions neither restriction, so users are left wondering if this is
intentional behavior or not.
Fix this by adding a check to builtin/clone.c: when doing a local clone,
perform an extra check to see if "$GIT_DIR/objects" is a symlink, and if
so, assume that that was the reason for the failure and report the
relevant information. Ideally, dir_iterator_begin() would tell us that
the real failure reason is the presence of the symlink, but (as far as I
can tell) there isn't an appropriate errno value for that.
Also, update Documentation/git-clone.txt to reflect that this
restriction exists.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/clone.c')
-rw-r--r-- | builtin/clone.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/builtin/clone.c b/builtin/clone.c index c171def1f3..ae2db8535a 100644 --- a/builtin/clone.c +++ b/builtin/clone.c @@ -331,8 +331,18 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest, iter = dir_iterator_begin(src->buf, DIR_ITERATOR_PEDANTIC); - if (!iter) + if (!iter) { + if (errno == ENOTDIR) { + int saved_errno = errno; + struct stat st; + + if (!lstat(src->buf, &st) && S_ISLNK(st.st_mode)) + die(_("'%s' is a symlink, refusing to clone with --local"), + src->buf); + errno = saved_errno; + } die_errno(_("failed to start iterator over '%s'"), src->buf); + } strbuf_addch(src, '/'); src_len = src->len; |