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authorJeff King <peff@peff.net>2012-02-02 21:59:13 (GMT)
committerJunio C Hamano <gitster@pobox.com>2012-02-03 00:41:55 (GMT)
commitb3256eb8b35937192e85725d0c2bcb422295790c (patch)
tree80d4aae728c99ab97e2facf9f7ef895fba7d1479
parent406da7803217998ff6bf5dc69c55b1613556c2f4 (diff)
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standardize and improve lookup rules for external local repos
When you specify a local repository on the command line of clone, ls-remote, upload-pack, receive-pack, or upload-archive, or in a request to git-daemon, we perform a little bit of lookup magic, doing things like looking in working trees for .git directories and appending ".git" for bare repos. For clone, this magic happens in get_repo_path. For everything else, it happens in enter_repo. In both cases, there are some ambiguous or confusing cases that aren't handled well, and there is one case that is not handled the same by both methods. This patch tries to provide (and test!) standard, sensible lookup rules for both code paths. The intended changes are: 1. When looking up "foo", we have always preferred a working tree "foo" (containing "foo/.git" over the bare "foo.git". But we did not prefer a bare "foo" over "foo.git". With this patch, we do so. 2. We would select directories that existed but didn't actually look like git repositories. With this patch, we make sure a selected directory looks like a git repo. Not only is this more sensible in general, but it will help anybody who is negatively affected by change (1) negatively (e.g., if they had "foo.git" next to its separate work tree "foo", and expect to keep finding "foo.git" when they reference "foo"). 3. The enter_repo code path would, given "foo", look for "foo.git/.git" (i.e., do the ".git" append magic even for a repo with working tree). The clone code path did not; with this patch, they now behave the same. In the unlikely case of a working tree overlaying a bare repo (i.e., a ".git" directory _inside_ a bare repo), we continue to treat it as a working tree (prefering the "inner" .git over the bare repo). This is mainly because the combination seems nonsensical, and I'd rather stick with existing behavior on the off chance that somebody is relying on it. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/clone.c4
-rw-r--r--cache.h1
-rw-r--r--path.c7
-rw-r--r--setup.c2
-rwxr-xr-xt/t5900-repo-selection.sh100
5 files changed, 109 insertions, 5 deletions
diff --git a/builtin/clone.c b/builtin/clone.c
index efe8b6c..b11dd6d 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -105,7 +105,7 @@ static const char *argv_submodule[] = {
static char *get_repo_path(const char *repo, int *is_bundle)
{
- static char *suffix[] = { "/.git", ".git", "" };
+ static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
static char *bundle_suffix[] = { ".bundle", "" };
struct stat st;
int i;
@@ -115,7 +115,7 @@ static char *get_repo_path(const char *repo, int *is_bundle)
path = mkpath("%s%s", repo, suffix[i]);
if (stat(path, &st))
continue;
- if (S_ISDIR(st.st_mode)) {
+ if (S_ISDIR(st.st_mode) && is_git_directory(path)) {
*is_bundle = 0;
return xstrdup(absolute_path(path));
} else if (S_ISREG(st.st_mode) && st.st_size > 8) {
diff --git a/cache.h b/cache.h
index 2e6ad36..3dfb95d 100644
--- a/cache.h
+++ b/cache.h
@@ -432,6 +432,7 @@ extern char *git_work_tree_cfg;
extern int is_inside_work_tree(void);
extern int have_git_dir(void);
extern const char *get_git_dir(void);
+extern int is_git_directory(const char *path);
extern char *get_object_directory(void);
extern char *get_index_file(void);
extern char *get_graft_file(void);
diff --git a/path.c b/path.c
index b6f71d1..6f2aa69 100644
--- a/path.c
+++ b/path.c
@@ -293,7 +293,7 @@ const char *enter_repo(const char *path, int strict)
if (!strict) {
static const char *suffix[] = {
- ".git/.git", "/.git", ".git", "", NULL,
+ "/.git", "", ".git/.git", ".git", NULL,
};
const char *gitfile;
int len = strlen(path);
@@ -324,8 +324,11 @@ const char *enter_repo(const char *path, int strict)
return NULL;
len = strlen(used_path);
for (i = 0; suffix[i]; i++) {
+ struct stat st;
strcpy(used_path + len, suffix[i]);
- if (!access(used_path, F_OK)) {
+ if (!stat(used_path, &st) &&
+ (S_ISREG(st.st_mode) ||
+ (S_ISDIR(st.st_mode) && is_git_directory(used_path)))) {
strcat(validated_path, suffix[i]);
break;
}
diff --git a/setup.c b/setup.c
index 61c22e6..7a3618f 100644
--- a/setup.c
+++ b/setup.c
@@ -247,7 +247,7 @@ const char **get_pathspec(const char *prefix, const char **pathspec)
* a proper "ref:", or a regular file HEAD that has a properly
* formatted sha1 object name.
*/
-static int is_git_directory(const char *suspect)
+int is_git_directory(const char *suspect)
{
char path[PATH_MAX];
size_t len = strlen(suspect);
diff --git a/t/t5900-repo-selection.sh b/t/t5900-repo-selection.sh
new file mode 100755
index 0000000..3d5b418
--- /dev/null
+++ b/t/t5900-repo-selection.sh
@@ -0,0 +1,100 @@
+#!/bin/sh
+
+test_description='selecting remote repo in ambiguous cases'
+. ./test-lib.sh
+
+reset() {
+ rm -rf foo foo.git fetch clone
+}
+
+make_tree() {
+ git init "$1" &&
+ (cd "$1" && test_commit "$1")
+}
+
+make_bare() {
+ git init --bare "$1" &&
+ (cd "$1" &&
+ tree=`git hash-object -w -t tree /dev/null` &&
+ commit=$(echo "$1" | git commit-tree $tree) &&
+ git update-ref HEAD $commit
+ )
+}
+
+get() {
+ git init --bare fetch &&
+ (cd fetch && git fetch "../$1") &&
+ git clone "$1" clone
+}
+
+check() {
+ echo "$1" >expect &&
+ (cd fetch && git log -1 --format=%s FETCH_HEAD) >actual.fetch &&
+ (cd clone && git log -1 --format=%s HEAD) >actual.clone &&
+ test_cmp expect actual.fetch &&
+ test_cmp expect actual.clone
+}
+
+test_expect_success 'find .git dir in worktree' '
+ reset &&
+ make_tree foo &&
+ get foo &&
+ check foo
+'
+
+test_expect_success 'automagically add .git suffix' '
+ reset &&
+ make_bare foo.git &&
+ get foo &&
+ check foo.git
+'
+
+test_expect_success 'automagically add .git suffix to worktree' '
+ reset &&
+ make_tree foo.git &&
+ get foo &&
+ check foo.git
+'
+
+test_expect_success 'prefer worktree foo over bare foo.git' '
+ reset &&
+ make_tree foo &&
+ make_bare foo.git &&
+ get foo &&
+ check foo
+'
+
+test_expect_success 'prefer bare foo over bare foo.git' '
+ reset &&
+ make_bare foo &&
+ make_bare foo.git &&
+ get foo &&
+ check foo
+'
+
+test_expect_success 'disambiguate with full foo.git' '
+ reset &&
+ make_bare foo &&
+ make_bare foo.git &&
+ get foo.git &&
+ check foo.git
+'
+
+test_expect_success 'we are not fooled by non-git foo directory' '
+ reset &&
+ make_bare foo.git &&
+ mkdir foo &&
+ get foo &&
+ check foo.git
+'
+
+test_expect_success 'prefer inner .git over outer bare' '
+ reset &&
+ make_tree foo &&
+ make_bare foo.git &&
+ mv foo/.git foo.git &&
+ get foo.git &&
+ check foo
+'
+
+test_done