path: root/builtin/rev-parse.c
diff options
authorNguyễn Thái Ngọc Duy <>2014-11-30 08:24:31 (GMT)
committerJunio C Hamano <>2014-12-01 19:00:11 (GMT)
commit557bd833bb4e2bd1f109f6f911ab517b6ba3d27a (patch)
treed2a324592a84d0214285c3b36dbcbe8110985425 /builtin/rev-parse.c
parent57a23b770a839786f2eaae4a9dde779149bfb812 (diff)
git_path(): be aware of file relocation in $GIT_DIR
We allow the user to relocate certain paths out of $GIT_DIR via environment variables, e.g. GIT_OBJECT_DIRECTORY, GIT_INDEX_FILE and GIT_GRAFT_FILE. Callers are not supposed to use git_path() or git_pathdup() to get those paths. Instead they must use get_object_directory(), get_index_file() and get_graft_file() respectively. This is inconvenient and could be missed in review (for example, there's git_path("objects/info/alternates") somewhere in sha1_file.c). This patch makes git_path() and git_pathdup() understand those environment variables. So if you set GIT_OBJECT_DIRECTORY to /foo/bar, git_path("objects/abc") should return /foo/bar/abc. The same is done for the two remaining env variables. "git rev-parse --git-path" is the wrapper for script use. This patch kinda reverts a0279e1 (setup_git_env: use git_pathdup instead of xmalloc + sprintf - 2014-06-19) because using git_pathdup here would result in infinite recursion: setup_git_env() -> git_pathdup("objects") -> .. -> adjust_git_path() -> get_object_directory() -> oops, git_object_directory is NOT set yet -> setup_git_env() I wanted to make git_pathdup_literal() that skips adjust_git_path(). But that won't work because later on when $GIT_COMMON_DIR is introduced, git_pathdup_literal("objects") needs adjust_git_path() to replace $GIT_DIR with $GIT_COMMON_DIR. Signed-off-by: Nguyễn Thái Ngọc Duy <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'builtin/rev-parse.c')
1 files changed, 7 insertions, 0 deletions
diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index 35d3c43..4cd44aa 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -533,6 +533,13 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
+ if (!strcmp(arg, "--git-path")) {
+ if (!argv[i + 1])
+ die("--git-path requires an argument");
+ puts(git_path("%s", argv[i + 1]));
+ i++;
+ continue;
+ }
if (as_is) {
if (show_file(arg, output_prefix) && as_is < 2)
verify_filename(prefix, arg, 0);