[PATCH v3 10/12] Allow helpers to request the path to the .git directory

[Sverre Rabbelier <srabbelier@gmail.com>]

The 'gitdir' capability is reported by the remote helper if it
requires the location of the .git directory. The location of the .git
directory can then be used by the helper to store status files even
when the current directory is not a git repository (such as is the
case when cloning).

The location of the .git dir is specified as an absolute path.

Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
---

	Rebased, but otherwise unchanged.
	Needs to be updated when we decide on a proper location for
	the helper specific info.

 transport-helper.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/transport-helper.c b/transport-helper.c
index d38dedf..7ea76fd 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -64,6 +64,12 @@ static struct child_process *get_helper(struct transport *transport)
 				   refspec_alloc);
 			refspecs[refspec_nr++] = strdup(buf.buf + strlen("refspec "));
 		}
+		if (!strcmp(buf.buf, "gitdir")) {
+			struct strbuf gitdir = STRBUF_INIT;
+			strbuf_addf(&gitdir, "gitdir %s\n", get_git_dir());
+			write_in_full(helper->in, gitdir.buf, gitdir.len);
+			strbuf_reset(&gitdir);
+		}
 	}
 	if (refspecs) {
 		data->refspec_nr = refspec_nr;
-- 
1.6.5.2.158.g6dacb